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Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Screening reactor steam/water piping systems for water hammer  

SciTech Connect (OSTI)

A steam/water system possessing a certain combination of thermal, hydraulic and operational states, can, in certain geometries, lead to a steam bubble collapse induced water hammer. These states, operations, and geometries are identified. A procedure that can be used for identifying whether an unbuilt reactor system is prone to water hammer is proposed. For the most common water hammer, steam bubble collapse induced water hammer, six conditions must be met in order for one to occur. These are: (1) the pipe must be almost horizontal; (2) the subcooling must be greater than 20 C; (3) the L/D must be greater than 24; (4) the velocity must be low enough so that the pipe does not run full, i.e., the Froude number must be less than one; (5) there should be void nearby; (6) the pressure must be high enough so that significant damage occurs, that is the pressure should be above 10 atmospheres. Recommendations on how to avoid this kind of water hammer in both the design and the operation of the reactor system are made.

Griffith, P. [Massachusetts Inst. of Tech., Cambridge, MA (United States)

1997-09-01T23:59:59.000Z

2

Savings Project: Insulate Hot Water Pipes for Energy Savings | Department  

Broader source: Energy.gov (indexed) [DOE]

Insulate Hot Water Pipes for Energy Savings Insulate Hot Water Pipes for Energy Savings Savings Project: Insulate Hot Water Pipes for Energy Savings Addthis Project Level Medium Energy Savings $8-$12 annually Time to Complete 3 hours for a small house Overall Cost $10-$15 Insulating water pipes can save you water, energy, and money. | Photo courtesy of iStockphoto.com/nsj-images Insulating water pipes can save you water, energy, and money. | Photo courtesy of iStockphoto.com/nsj-images Insulating your hot water pipes reduces heat loss and can raise water temperature 2°F-4°F hotter than uninsulated pipes can deliver, allowing for a lower water temperature setting. You also won't have to wait as long for hot water when you turn on a faucet or showerhead, which helps conserve water. Paying for someone to insulate your pipes-as a project on its own-may

3

Statistical estimation of water distribution system pipe break risk  

E-Print Network [OSTI]

The deterioration of pipes in urban water distribution systems is of concern to water utilities throughout the world. This deterioration generally leads to pipe breaks and leaks, which may result in reduction in the water-carrying capacity...

Yamijala, Shridhar

2009-05-15T23:59:59.000Z

4

AWSWAH - the heat pipe solar water heater  

SciTech Connect (OSTI)

An all weather heat pipe solar water heater (AWSWAH) comprising a collector of 4 m/sup 2/ (43 ft/sup 2/) and a low profile water tank of 160 liters (42 gal.) was developed. A single heat pipe consisting of 30 risers and two manifolds in the evaporator and a spiral condenser was incorporated into the AWSWAH. Condensate metering was done by synthetic fiber wicks. The AWSWAH was tested alongside two conventional solar water heaters of identical dimensions, an open loop system and a closed loop system. It was found that the AWSWAH was an average of 50% more effective than the open system in the temperature range 30-90 /sup 0/C (86-194 /sup 0/F). The closed loop system was the least efficient of the three systems.

Akyurt, M.

1986-01-01T23:59:59.000Z

5

Robot design for leak detection in water-pipe systems  

E-Print Network [OSTI]

Leaks are major problem that occur in the water pipelines all around the world. Several reports indicate loss of around 20 to 30 percent of water in the distribution of water through water pipe systems. Such loss of water ...

Choi, Changrak

2012-01-01T23:59:59.000Z

6

Water and Mercury Pipe Flow Simulation in FLUENTSimulation in FLUENT  

E-Print Network [OSTI]

Water and Mercury Pipe Flow Simulation in FLUENTSimulation in FLUENT Yan Zhan, Foluso Ladeinde;Straight Pipe flow Ph i l bl-- Physical problem Isothermal mercury/ water flow through a 60D straight pipe* Mercury 1500 41.844 m 4.04 m/s 18.5 bar 15.67 bar Water 1500 331.404 m 4.04 m/s 18.5 bar 18.291bar *uave

McDonald, Kirk

7

Modeling and analysis of water-hammer in coaxial pipes  

E-Print Network [OSTI]

The fluid-structure interaction is studied for a system composed of two coaxial pipes in an annular geometry, for both homogeneous isotropic metal pipes and fiber-reinforced (anisotropic) pipes. Multiple waves, traveling at different speeds and amplitudes, result when a projectile impacts on the water filling the annular space between the pipes. In the case of carbon fiber-reinforced plastic thin pipes we compute the wavespeeds, the fluid pressure and mechanical strains as functions of the fiber winding angle. This generalizes the single-pipe analysis of J. H. You, and K. Inaba, Fluid-structure interaction in water-filled pipes of anisotropic composite materials, J. Fl. Str. 36 (2013). Comparison with a set of experimental measurements seems to validate our models and predictions.

Cesana, Pierluigi

2015-01-01T23:59:59.000Z

8

Acoustical wave propagation in buried water filled pipes  

E-Print Network [OSTI]

This thesis presents a comprehensive way of dealing with the problem of acoustical wave propagation in cylindrically layered media with a specific application in water-filled underground pipes. The problem is studied in ...

Kondis, Antonios, 1980-

2005-01-01T23:59:59.000Z

9

Acoustic imaging in a water filled metallic pipe  

SciTech Connect (OSTI)

A method is described for the imaging of the interior of a water filled metallic pipe using acoustical techniques. The apparatus consists of an array of 20 acoustic transducers mounted circumferentially around the pipe. Each transducer is pulsed in sequence, and the echos resulting from bubbles in the interior are digitized and processed by a computer to generate an image. The electronic control and digitizing system and the software processing of the echo signals are described. The performance of the apparatus is illustrated by the imaging of simulated bubbles consisting of thin walled glass spheres suspended in the pipe.

Kolbe, W.F.; Turko, B.T.; Leskovar, B.

1984-04-01T23:59:59.000Z

10

OTEC Cold Water Pipe-Platform Sub-System Dynamic Interaction...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

OTEC Cold Water Pipe-Platform Sub-System Dynamic Interaction Validation (OPPSDIV) OTEC Cold Water Pipe-Platform Sub-System Dynamic Interaction Validation (OPPSDIV) OTEC Cold Water...

11

Applicability of Related Data, Algorithms, and Models to the Simulation of Ground-Coupled Residential Hot Water Piping in California  

SciTech Connect (OSTI)

Residential water heating is an important consideration in California?s building energy efficiency standard. Explicit treatment of ground-coupled hot water piping is one of several planned improvements to the standard. The properties of water, piping, insulation, backfill materials, concrete slabs, and soil, their interactions, and their variations with temperature and over time are important considerations in the required supporting analysis. Heat transfer algorithms and models devised for generalized, hot water distribution system, ground-source heat pump and ground heat exchanger, nuclear waste repository, buried oil pipeline, and underground electricity transmission cable applications can be adapted to the simulation of under-slab water piping. A numerical model that permits detailed examination of and broad variations in many inputs while employing a technique to conserve computer run time is recommended.

Warner, J.L.; Lutz, J.D.

2006-01-01T23:59:59.000Z

12

What Have You Done to Ensure Your Water Pipes are Efficient and...  

Energy Savers [EERE]

What Have You Done to Ensure Your Water Pipes are Efficient and Safe? What Have You Done to Ensure Your Water Pipes are Efficient and Safe? March 17, 2011 - 7:30am Addthis This...

13

High-performance lubricants from Honeywell certified for PVC water pipe formulations  

Science Journals Connector (OSTI)

Honeywell Specialty Materials reports that its Rheochem line of high-performance lubricants (HPLs) has received certifications from independent, not-for-profit organization NSF International and the Plastics Pipe Institute for use in PVC water pipe formulations. The certifications indicate that the \\{HPLs\\} are safe and effective for use in plastic pipes that carry water throughout homes and municipalities.

2009-01-01T23:59:59.000Z

14

Reactor Materials Program process water piping indirect failure frequency  

SciTech Connect (OSTI)

Following completion of the probabilistic analyses, the LOCA Definition Project has been subject to various external reviews, and as a result the need for several revisions has arisen. This report updates and summarizes the indirect failure frequency analysis for the process water piping. In this report, a conservatism of the earlier analysis is removed, supporting lower failure frequency estimates. The analysis results are also reinterpreted in light of subsequent review comments.

Daugherty, W.L.

1989-10-30T23:59:59.000Z

15

What Have You Done to Ensure Your Water Pipes are Efficient and Safe? |  

Broader source: Energy.gov (indexed) [DOE]

Have You Done to Ensure Your Water Pipes are Efficient and Have You Done to Ensure Your Water Pipes are Efficient and Safe? What Have You Done to Ensure Your Water Pipes are Efficient and Safe? March 17, 2011 - 7:30am Addthis This week, Elizabeth told you about her unfortunate experience with burst pipes this winter. These accidents always seem to happen at the most inconvenient times and can be a real mess to fix and clean up. But there are a few things you can do to prevent them-namely, check your pipes and be sure they are insulated, especially if they are located in cold areas of your home. In addition, insulating your hot water pipes can help you save money and energy on water heating. What have you done to ensure your water pipes are efficient and safe? Each Thursday, you have the chance to share your thoughts on a question

16

What Have You Done to Ensure Your Water Pipes are Efficient and Safe? |  

Broader source: Energy.gov (indexed) [DOE]

What Have You Done to Ensure Your Water Pipes are Efficient and What Have You Done to Ensure Your Water Pipes are Efficient and Safe? What Have You Done to Ensure Your Water Pipes are Efficient and Safe? March 17, 2011 - 7:30am Addthis This week, Elizabeth told you about her unfortunate experience with burst pipes this winter. These accidents always seem to happen at the most inconvenient times and can be a real mess to fix and clean up. But there are a few things you can do to prevent them-namely, check your pipes and be sure they are insulated, especially if they are located in cold areas of your home. In addition, insulating your hot water pipes can help you save money and energy on water heating. What have you done to ensure your water pipes are efficient and safe? Each Thursday, you have the chance to share your thoughts on a question

17

CHARACTERISATION OF AGED HDPE PIPES FROM DRINKING WATER DISTRIBUTION: INVESTIGATION OF CRACK DEPTH BY NOL RING  

E-Print Network [OSTI]

CHARACTERISATION OF AGED HDPE PIPES FROM DRINKING WATER DISTRIBUTION: INVESTIGATION OF CRACK DEPTH are used for the transport of drinking water. However, disinfectants in water seem to have a strong impact for the distribution of drinking water. HDPE pipes are exposed to an internal pressure due to water flow. Furthermore

Paris-Sud XI, Université de

18

The effects of an intermittent piped water network and storage practices on household water quality in Tamale, Ghana  

E-Print Network [OSTI]

The United Nations Millennium Development Goals include a target to halve the number of people without access to "improved" water sources, which include piped water supply. However, an "improved" source of water does not ...

Vacs Renwick, Deborah Alexandra

2013-01-01T23:59:59.000Z

19

Heat and Mass Transfer in a Wetted Thermal Insulation of hot Water Pipes Operating Under Flooding Conditions  

Science Journals Connector (OSTI)

We present the results of numerical simulation of the thermal regimes of hot water pipes under flooding conditions with account for evaporation and diffusion ... modeling thermal regimes of hot water pipes under

V. Yu. Polovnikov; E. V. Gubina

2014-09-01T23:59:59.000Z

20

Development of pipe deterioration models for water distribution systems using EPR  

E-Print Network [OSTI]

Development of pipe deterioration models for water distribution systems using EPR L. Berardi, O diameter D, Dclass Equivalent diameter of the pipe class DSS Decision support system EPR Evolutionary polynomial regression ES Matrix of exponents of EPR input variables f, g Functions selected by user

Fernandez, Thomas

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Evaluation of IR techniques for detection of wall thinning in service water piping  

SciTech Connect (OSTI)

Service water piping systems at electric power plants provide cooling for a variety of safety and non-safety related components and systems. Assessing integrity of the service water piping system includes detection and analysis of pipe wall thinning. Conventional inspection techniques usually involve the time-intensive process of ultrasonic thickness measurements, based on a grid system, of the entire pipe length. An alternative to this process may lie in the use of active infrared thermography techniques for detection of thin wall areas in the pipe. The EPRI NDE Center participated in a preliminary evaluation of this technology at Vermont Yankee Nuclear Power Plant. Based on the promising results of the Vermont Yankee activity, the Center worked with Thermal Wave Imaging, Inc. (TWI) in an effort to optimize the IR thermal injection technique for service water piping applications. The primary goals of this effort were to determine the practical depth resolution capabilities of the thermal injection method in carbon steel, and also to minimize the effects of pipe curvature on detection capabilities. Both of these efforts were subject to the constraint that the system be sufficiently portable for use in an electrical power plant, where space and access to the pipe surface is often limited.

Zayicek, P. [EPRI NDE Center, Charlotte, NC (United States); Shepard, S.M. [Thermal Wave Imaging, Inc., Lathrup Village, MI (United States)

1996-12-31T23:59:59.000Z

22

Fracture mechanics models developed for piping reliability assessment in light water reactors: piping reliability project  

SciTech Connect (OSTI)

The efforts concentrated on modifications of the stratified Monte Carlo code called PRAISE (Piping Reliability Analysis Including Seismic Events) to make it more widely applicable to probabilistic fracture mechanics analysis of nuclear reactor piping. Pipe failures are considered to occur as the result of crack-like defects introduced during fabrication, that escape detection during inspections. The code modifications allow the following factors in addition to those considered in earlier work to be treated: other materials, failure criteria and subcritical crack growth characteristic; welding residual and vibratory stresses; and longitudinal welds (the original version considered only circumferential welds). The fracture mechanics background for the code modifications is included, and details of the modifications themselves provided. Additionally, an updated version of the PRAISE user's manual is included. The revised code, known as PRAISE-B was then applied to a variety of piping problems, including various size lines subject to stress corrosion cracking and vibratory stresses. Analyses including residual stresses and longitudinal welds were also performed.

Harris, D.O.; Lim, E.Y.; Dedhia, D.D.; Woo, H.H.; Chou, C.K.

1982-06-01T23:59:59.000Z

23

Numerical Study of Heavy Oil Flow on Horizontal Pipe Lubricated by Water  

Science Journals Connector (OSTI)

This chapter reports information related to multiphase flow with emphasis to core-annular flow. Industrial application has been given to transient water-heavy ultraviscous oil two-phase flow in horizontal pipe...

Tony Herbert Freire de Andrade

2012-01-01T23:59:59.000Z

24

Prioritizing Water Pipe Replacement and Rehabilitation by Evaluating Failure Risk  

E-Print Network [OSTI]

..................................................................... 84 4.3.5.1 Exfoliation Percentage of Coating Materials ................. 84 4.3.6 Changes in EIS Characteristics of Coating Materials in Steel Pipes according to Years of Laying ........................................... 88 4....3.6.1 EIS Measurement ........................................................... 89 4.3.6.1.1 Overview of Electro-Impedance Spectroscopy (EIS) Measurement ......................................... 89 4.3.6.1.2 Principles of EIS...

Lee, Sang Hyun

2012-02-14T23:59:59.000Z

25

A kinetic scheme for unsteady pressurised flows in closed water pipes  

E-Print Network [OSTI]

he aim of this paper is to present a kinetic numerical scheme for the computations of transient pressurised flows in closed water pipes. Firstly, we detail the mathematical model written as a conservative hyperbolic partial differentiel system of equations, and the we recall how to obtain the corresponding kinetic formulation. Then we build the kinetic scheme ensuring an upwinding of the source term due to the topography performed in a close manner described by Perthame et al. using an energetic balance at microscopic level for the Shallow Water equations. The validation is lastly performed in the case of a water hammer in a uniform pipe: we compare the numerical results provided by an industrial code used at EDF-CIH (France), which solves the Allievi equation (the commonly used equation for pressurised flows in pipes) by the method of characteristics, with those of the kinetic scheme. It appears that they are in a very good agreement.

Bourdarias, Christian; Gerbi, Stphane

2008-01-01T23:59:59.000Z

26

High Temperature Water Heat Pipes Radiator for a Brayton Space Reactor Power System  

SciTech Connect (OSTI)

A high temperature water heat pipes radiator design is developed for a space power system with a sectored gas-cooled reactor and three Closed Brayton Cycle (CBC) engines, for avoidance of single point failures in reactor cooling and energy conversion and rejection. The CBC engines operate at turbine inlet and exit temperatures of 1144 K and 952 K. They have a net efficiency of 19.4% and each provides 30.5 kWe of net electrical power to the load. A He-Xe gas mixture serves as the turbine working fluid and cools the reactor core, entering at 904 K and exiting at 1149 K. Each CBC loop is coupled to a reactor sector, which is neutronically and thermally coupled, but hydraulically decoupled to the other two sectors, and to a NaK-78 secondary loop with two water heat pipes radiator panels. The segmented panels each consist of a forward fixed segment and two rear deployable segments, operating hydraulically in parallel. The deployed radiator has an effective surface area of 203 m2, and when the rear segments are folded, the stowed power system fits in the launch bay of the DELTA-IV Heavy launch vehicle. For enhanced reliability, the water heat pipes operate below 50% of their wicking limit; the sonic limit is not a concern because of the water, high vapor pressure at the temperatures of interest (384 - 491 K). The rejected power by the radiator peaks when the ratio of the lengths of evaporator sections of the longest and shortest heat pipes is the same as that of the major and minor widths of the segments. The shortest and hottest heat pipes in the rear segments operate at 491 K and 2.24 MPa, and each rejects 154 W. The longest heat pipes operate cooler (427 K and 0.52 MPa) and because they are 69% longer, reject more power (200 W each). The longest and hottest heat pipes in the forward segments reject the largest power (320 W each) while operating at {approx} 46% of capillary limit. The vapor temperature and pressure in these heat pipes are 485 K and 1.97 MPa. By contrast, the shortest water heat pipes in the forward segments operate much cooler (427 K and 0.52 MPa), and reject a much lower power of 45 W each. The radiator with six fixed and 12 rear deployable segments rejects a total of 324 kWth, weights 994 kg and has an average specific power of 326 Wth/kg and a specific mass of 5.88 kg/m2.

El-Genk, Mohamed S.; Tournier, Jean-Michel [Institute for Space and Nuclear Power Studies, University of New Mexico, Albuquerque, NM 87131 (United States); Chemical and Nuclear Engineering Department, University of New Mexico, Albuquerque, NM 87131 (United States)

2006-01-20T23:59:59.000Z

27

Fluidstructure interaction with pipe-wall viscoelasticity during water hammer  

E-Print Network [OSTI]

rights reserved. 1. Introduction There are four important items, which may affect classical water-hammer

Tijsseling, A.S.

28

Piping benchmark problems for the General Electric Advanced Boiling Water Reactor  

SciTech Connect (OSTI)

To satisfy the need for verification of the computer programs and modeling techniques that will be used to perform the final piping analyses for an advanced boiling water reactor standard design, three benchmark problems were developed. The problems are representative piping systems subjected to representative dynamic loads with solutions developed using the methods being proposed for analysis for the advanced reactor standard design. It will be required that the combined license holders demonstrate that their solutions to these problems are in agreement with the benchmark problem set.

Bezler, P.; DeGrassi, G.; Braverman, J.; Wang, Y.K. [Brookhaven National Lab., Upton, NY (US)

1993-08-01T23:59:59.000Z

29

Evaluation of cracking in steam generator feedwater piping in pressurized water reactor plants  

SciTech Connect (OSTI)

Cracking in feedwater piping was detected near the inlet to steam generators in 15 pressurized water reactor plants. Sections with cracks from nine plants are examined with the objective of identifying the cracking mechanism and assessing various factors that might contribute to this cracking. Using transmission electron microscopy, fatigue striations are observed on replicas of cleaned crack surfaces. Calculations based on the observed striation spacings gave a cyclic stress value of 150 MPa (22 ksi) for one of the major cracks. The direction of crack propagation was invariably related to the piping surface and not to the piping axis. These two factors are consistent with the proposed concept of thermally induced, cyclic, tensile surface stresses and it is concluded that the overriding factor in the cracking problem was the presence of such undocumented cyclic loads.

Goldberg, A.; Streit, R.D.

1981-05-01T23:59:59.000Z

30

The qualification of advanced composite pipe for use in fire water deluge systems on open type offshore oil platforms  

SciTech Connect (OSTI)

Different types of FIBERBOND{reg_sign} pipe in the dry condition and with a butt and strap joint were subjected to a controlled fire for fire endurance evaluation. Testing adheres to a modification of the ASTM 1173-95 guideline, which simulates the development of an actual hydrocarbon fire. For a fire water deluge system, the pipe is in the dry condition approximately one to three minutes during an actual hydrocarbon fire. Preliminary testing shows that composite pipe is able to withstand this exposure to fire for the five minute duration of the test. This is achieved with modifying the chemical composition of the composite pipe and in some cases, adding an additional structural component to the overall pipe. Therefore, composite pipe could be used for the deluge fire system of an offshore oil platform.

Lea, R.H. [Specialty Plastics, Inc., Baton Rouge, LA (United States); Stubblefield, M.A.; Pang, S.S. [Louisiana State Univ., Baton Rouge, LA (United States). Dept. of Mechanical Engineering

1996-12-01T23:59:59.000Z

31

A Novel Water Running Robot Inspired by Basilisk Lizards  

E-Print Network [OSTI]

characterized their method of propulsion and their means of staying afloat. By slapping and stroking their feet toward studies in amphibious stride patterns; step motions equally conducive to propulsion on water and marangoni flows. Larger animals have fewer options. Lizards, aquatic birds, and marine mammals

Sitti, Metin

32

Qualification Requirements of Guided Ultrasonic Waves for Inspection of Piping in Light Water Reactors  

SciTech Connect (OSTI)

Guided ultrasonic waves (GUW) are being increasingly used for both NDT and monitoring of piping. GUW offers advantages over many conventional NDE technologies due to the ability to inspect large volumes of piping components without significant removal of thermal insulation or protective layers. In addition, regions rendered inaccessible to more conventional NDE technologies may be more accessible using GUW techniques. For these reasons, utilities are increasingly considering the use of GUWs for performing the inspection of piping components in nuclear power plants. GUW is a rapidly evolving technology and its usage for inspection of nuclear power plant components requires refinement and qualification to ensure it is able to achieve consistent and acceptable levels of performance. This paper will discuss potential requirements for qualification of GUW techniques for the inspection of piping components in light water reactors (LWRs). The Nuclear Regulatory Commission has adopted ASME Boiler and Pressure Vessel Code requirements in Sections V, III, and XI for nondestructive examination methods, fabrication inspections, and pre-service and in-service inspections. A Section V working group has been formed to place the methodology of GUW into the ASME Boiler and Pressure Vessel Code but no requirements for technique, equipment, or personnel exist in the Code at this time.

Meyer, Ryan M.; Ramuhalli, Pradeep; Doctor, Steven R.; Bond, Leonard J.

2013-08-01T23:59:59.000Z

33

Flexible ocean upwelling pipe  

DOE Patents [OSTI]

In an ocean thermal energy conversion facility, a cold water riser pipe is releasably supported at its upper end by the hull of the floating facility. The pipe is substantially vertical and has its lower end far below the hull above the ocean floor. The pipe is defined essentially entirely of a material which has a modulus of elasticity substantially less than that of steel, e.g., high density polyethylene, so that the pipe is flexible and compliant to rather than resistant to applied bending moments. The position of the lower end of the pipe relative to the hull is stabilized by a weight suspended below the lower end of the pipe on a flexible line. The pipe, apart from the weight, is positively buoyant. If support of the upper end of the pipe is released, the pipe sinks to the ocean floor, but is not damaged as the length of the line between the pipe and the weight is sufficient to allow the buoyant pipe to come to a stop within the line length after the weight contacts the ocean floor, and thereafter to float submerged above the ocean floor while moored to the ocean floor by the weight. The upper end of the pipe, while supported by the hull, communicates to a sump in the hull in which the water level is maintained below the ambient water level. The sump volume is sufficient to keep the pipe full during heaving of the hull, thereby preventing collapse of the pipe.

Person, Abraham (Los Alamitos, CA)

1980-01-01T23:59:59.000Z

34

Application of LBB to high energy pipings of a pressurized water reactor in Korea  

Science Journals Connector (OSTI)

The application of the leak before break (LBB) technology to the newly constructed pressurized water reactors (PWRs) has been approved in Korea for several high energy systems that can meet rigorous acceptance criteria. The LBB application in Korea is based on the US Nuclear Regulatory Commision (USNRC) requirements. The purpose of the LBB evaluation is to eliminate the dynamic effects associated with the postulated double-ended guillotine break (DEGB) from design basis loads, as well as to eliminate pipe whip restraints and jet impingement barriers. There were several issues on the application of LBB to the primary coolant loop and the pressurizer surge line. Of concern were the material properties for the carbon steel for the primary coolant loop, estimation of the crack opening area at the pipe-to-nozzle interface considering the asymmetry, and the leakage crack size which barely meets the required margin of 2 for the surge line, etc. Some additional work was required by the safety authority to maintain the global safety of the plant at a sufficient level. This paper describes the regulatory application of LBB in Korea, and the issues encountered during the regulatory review.

Jeong-Bae Lee; Young Hwan Choi

1999-01-01T23:59:59.000Z

35

Continuous training versus interval training in deep water running: health effects for obese women  

Science Journals Connector (OSTI)

Objectives To search intermittent and continous trainning (IT and CT, respectively) effects through deep water running for the control and prevention of excessive body fat accumulation and improvement of quality of life. Methods Experimental study composed by 30 women, aged between 34 to 58 years old, during 12 weeks, three sessions per week, 47 minutes each. Body composition, cardiorespiratory condition and Quality of Life by WHOQOL-Brief were considered. Student's and Wilcoxon's non parametric tests were applied at 5% significance level. Results With the only exception for social domain of quality of life, all investigated variables revealed improvement in both groups for IT in comparison to CT. Conclusion Deep water running contributes to body fat reduction, physical fitness evolution and improvement of WHOQOL-Brief domains, regardless of the trainning type conducted.

S.R. Pasetti; A. Gonalves; C.R. Padovani

2012-01-01T23:59:59.000Z

36

Water quality analysis of the piped water supply in Tamale, Ghana  

E-Print Network [OSTI]

The United Nation's Millennium Development Goal Target 7.C is to "halve, by 2015, the proportion of the population without sustainable access to safe drinking water". While the UN claimed to have met this goal, studies ...

Hansen, Allison Jean

2014-01-01T23:59:59.000Z

37

Solar Water Heater Basics | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Solar Water Heater Basics Solar Water Heater Basics Solar Water Heater Basics August 19, 2013 - 3:01pm Addthis Illustration of an active, closed loop solar water heater. A large, flat panel called a flat plate collector is connected to a tank called a solar storage/backup water heater by two pipes. One of these pipes runs through a cylindrical pump into the bottom of the tank, where it becomes a coil called a double-wall heat exchanger. This coil runs up through the tank and out again to the flat plate collector. Antifreeze fluid runs only through this collector loop. Two pipes run out the top of the water heater tank; one is a cold water supply into the tank, and the other sends hot water to the house. Solar water heaters use the sun's heat to provide hot water for a home or

38

Water heat pipe frozen startup and shutdown transients with internal temperature, pressure and visual observations  

E-Print Network [OSTI]

temperatures can be very low, many heat pipes will have the working fluid in an initially frozen state. To insure that the heat pipes will work as desired, it is important to be able to model the frozen startup. Transient modeling of heat pipe operation has... startup. The same sort of measurements are also rare for transients that do not include frozen conditions, and could be equally important in verifying appropriate transient computational models. The objective of the work presented here is to obtain...

Reinarts, Thomas Raymond

2012-06-07T23:59:59.000Z

39

Significance of Smoking Machine Toxicant Yields to Blood-Level Exposure in Water Pipe Tobacco Smokers  

Science Journals Connector (OSTI)

...yields of polyaromatic hydrocarbons, volatile aldehydes...charcoal is used to heat sweetened and flavored...pipe, hot charcoal combustion products are drawn...and polyaromatic hydrocarbons (PAH) were quantified...Polycyclic aromatic hydrocarbons, carbon monoxide...

Alan L. Shihadeh and Thomas E. Eissenberg

2011-11-01T23:59:59.000Z

40

Review of industry efforts to manage pressurized water reactor feedwater nozzle, piping, and feedring cracking and wall thinning  

SciTech Connect (OSTI)

This report presents a review of nuclear industry efforts to manage thermal fatigue, flow-accelerated corrosion, and water hammer damage to pressurized water reactor (PWR) feedwater nozzles, piping, and feedrings. The review includes an evaluation of design modifications, operating procedure changes, augmented inspection and monitoring programs, and mitigation, repair and replacement activities. Four actions were taken: (a) review of field experience to identify trends of operating events, (b) review of technical literature, (c) visits to PWR plants and a PWR vendor, and (d) solicitation of information from 8 other countries. Assessment of field experience is that licensees have apparently taken sufficient action to minimize feedwater nozzle cracking caused by thermal fatigue and wall thinning of J-tubes and feedwater piping. Specific industry actions to minimize the wall-thinning in feedrings and thermal sleeves were not found, but visual inspection and necessary repairs are being performed. Assessment of field experience indicates that licensees have taken sufficient action to minimize steam generator water hammer in both top-feed and preheat steam generators. Industry efforts to minimize multiple check valve failures that have allowed backflow of steam from a steam generator and have played a major role in several steam generator water hammer events were not evaluated. A major finding of this review is that analysis, inspection, monitoring, mitigation, and replacement techniques have been developed for managing thermal fatigue and flow-accelerated corrosion damage to feedwater nozzles, piping, and feedrings. Adequate training and appropriate applications of these techniques would ensure effective management of this damage.

Shah, V.N.; Ware, A.G.; Porter, A.M.

1997-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Evaluation of cracking in feedwater piping adjacent to the steam generators in Nine Pressurized Water Reactor Plants  

SciTech Connect (OSTI)

Cracking in ASTM A106-B and A106-C feedwater piping was detected near the inlet to the steam generators in a number of pressurized water reactor plants. We received sections with cracks from nine of the plants with the objective of identifying the cracking mechanism and assessing various factors that might contribute to this cracking. Variations were observed in piping surface irregularities, corrosion-product, pit, and crack morphology, surface elmental and crystal structure analyses, and steel microstructures and mechanical properties. However, with but two exceptions, namely, arrest bands and major surface irregularities, we were unable to relate the extent of cracking to any of these factors. Tensile and fracture toughness (J/sub Ic/ and tearing modulus) properties were measured over a range of temperatures and strain rates. No unusual properties or microstructures were observed that could be related to the cracking problem. All crack surfaces contained thick oxide deposits and showed evidence of cyclic events in the form of arrest bands. Transmission electron microscopy revealed fatigue striations on replicas of cleaned crack surfaces from one plant and possibly from three others. Calculations based on the observed striation spacings gave a value of ..delta..sigma = 150 MPa (22 ksi) for one of the major cracks. The direction of crack propagation was invariably related to the piping surface and not to the piping axis. These two factors are consistent with the proposed concept of thermally induced, cyclic, tensile surface stresses. Although surface irregularities and corrosion pits were sources for crack initiation and corrosion may have contributed to crack propagation, it is proposed that the overriding factor in the cracking problem is the presence of unforeseen cyclic loads.

Goldberg, A.; Streit, R.D.; Scott, R.G.

1980-06-25T23:59:59.000Z

42

Applicability of Related Data, Algorithms, and Models to the Simulation of Ground-Coupled Residential Hot Water Piping in California  

E-Print Network [OSTI]

Outdoor Temperature for District Heating Systems. ASHRAEAssessment of Buried District Heating Piping. ASHRAE

Warner, J.L.

2009-01-01T23:59:59.000Z

43

Reproductive success and mortality rates of Ceriodaphnia dubia maintained in water from Upper Three Runs, Pen Branch, and Fourmile Branch  

SciTech Connect (OSTI)

It is anticipated that the new SRS NPDES permit will require toxicity testing of at numerous outfalls and receiving streams, using the standard test species, Ceriodaphnia dubia. Because SRS surface waters differ markedly from the standard culture water that is used for Ceriodaphnia, studies were undertaken to determine if unimpacted SRS surface waters will support this species. Three SRS surface waters were evaluated; Upper Three Runs at Road 8-1, Pen Branch at Road B, and Fourmile Branch at Road F. Toxicity tests were performed monthly on each water source for eleven months. All three water sources exhibited varying degrees of toxicity to Ceriodaphnia, with Pen Branch being the least toxic and Fourmile Branch being the most toxic. These results indicate that if in-stream toxicity testing is required, it may not be possible to separate the naturally occurring toxic effects of the receiving water from possible toxic effects of SRS effluents.

Specht, W.L.

1994-12-01T23:59:59.000Z

44

The Politics of Pipes: The Persistence of Small Water Networks in Post-Privatization Manila  

E-Print Network [OSTI]

Scale Private Service Providers in Electricity and WaterPrivate Service Providers of Water Supply and Electricity: A

Cheng, Deborah

2013-01-01T23:59:59.000Z

45

The Politics of Pipes: The Persistence of Small Water Networks in Post-Privatization Manila  

E-Print Network [OSTI]

Competition in Water and Sanitation: The Role of Small-ScaleSmall-scale entrepreneurs in the urban water and sanitationsmall-scale independent providers in the delivery of water and sanitation

Cheng, Deborah

2013-01-01T23:59:59.000Z

46

Development and testing of non-bonded flexible pipe for high temperature/high pressure/deep water/dynamic sour service applications  

SciTech Connect (OSTI)

Non-bonded flexible risers are a critical element of floating systems for offshore oil and gas production. This paper reviews product innovations and prototype testing of risers developed to cope with severe environments. Full scale dynamic test results with combined tension, bending, internal pressure and heating, and with these structural loads combined with sour production fluids introduced into the bore of the pipe are presented. The loading conditions for the tests were based on floating production systems in North Sea environments. End fittings must assure a leak tight transition to subsea and surface facilities when subjected to the pipe applied loads, thermal cycling during startup and shutdowns, and changing of the fluid barrier material properties over the service life. The results of analyses and tests conducted to verify the integrity of the end fitting with thermal cycling and fluid barrier changes due to the high temperature production fluids is presented. Conventional flexible pipe employs carbon steel for axial and hoop structural reinforcement. In deeper water, the tension loads induced by pipe weight increase stress levels in the pipe structure and deck and installation loads. As pipe stresses increase, larger cross sectional areas of the steel members are required, further increasing the weight. To reduce the unit weight, while retaining the required strength levels, composite materials have been developed to replace the steel tensile armor. The composite consists of carbon fibers in a thermoplastic matrix. Tests to verify the suitability of the material in the flexible pipe annulus environment and to evaluate the performance of the composite pipe structure are presented.

Kalman, M.; Belcher, J.; Chen, B.; Fraser, D.; Ethridge, A.; Loper, C.

1996-12-31T23:59:59.000Z

47

Water hammer with fluid-structure interaction in thick-walled pipes A.S. Tijsseling  

E-Print Network [OSTI]

. The model is based on conventional water-hammer and beam theories. Fluid- structure interaction (FSI generates water hammer, thus invoking fluid-structure interaction. The numerical simulation of water-hammer at a one-dimensional formulation, in accordance with classical water-hammer theory, the equations (1

Eindhoven, Technische Universiteit

48

The Politics of Pipes: The Persistence of Small Water Networks in Post-Privatization Manila  

E-Print Network [OSTI]

and Sanitation: The Role of Small-Scale Entrepreneurs (NoteSmall-scale entrepreneurs in the urban water and sanitationsmall-scale independent providers in the delivery of water and sanitation

Cheng, Deborah

2013-01-01T23:59:59.000Z

49

Water hammer with fluidstructure interaction in thick-walled pipes A.S. Tijsseling *  

E-Print Network [OSTI]

. The model is based on conventional water-hammer and beam theories. Fluid­structure interaction (FSI­structure interaction. The numerical simulation of water-hammer events (with and without fluid­structure interaction

Tijsseling, A.S.

50

Analysis and design of an in-pipe system for water leak detection  

E-Print Network [OSTI]

Leaks are a major factor for unaccounted water losses in almost every water distribution network. Pipeline leak may result, for example, from bad workmanship or from any destructive cause, due to sudden changes of pressure, ...

Chatzigeorgiou, Dimitris M

2010-01-01T23:59:59.000Z

51

The Politics of Pipes: The Persistence of Small Water Networks in Post-Privatization Manila  

E-Print Network [OSTI]

of Water and Sanitation Services for the Peri- urban Poor: AWater and Sanitation Services to the Urban Poor. New Delhi:the Poor in Metro Manila. Jakarta: Water and Sanitation

Cheng, Deborah

2013-01-01T23:59:59.000Z

52

Qualification requirements of guided ultrasonic waves for inspection of piping in light water reactors  

SciTech Connect (OSTI)

It is anticipated that guided ultrasonic wave (GUW) techniques will eventually see widespread application in the nuclear power industry as there are several near-term and future needs that could benefit from the availability of GUW technologies. Already, GUW techniques are receiving consideration for inspecting buried piping at nuclear power plants and future applications may include several Class 1 and 2 components. To accept the results of a nondestructive examination of safety critical components, the U.S. Nuclear Regulatory Commission requires that the examinations be performed using qualified equipment, personnel, and procedures. As the use of GUW techniques becomes more frequent, qualification may be required. Performance demonstration has been the approach to qualifying conventional NDE methods in the nuclear power industry. This paper highlights potential issues and research needs associated with facilitating GUW qualification for the nuclear power industry. Parametric studies of essential inspection parameters are necessary to understand their influence on inspection performance. The large volume sampling capability introduces several challenges for qualifying GUW techniques including the quantification of performance, potential interference caused by the presence of multiple flaws in the inspection region, and the practicality of manufacturing several large qualification specimens. Computer simulation may have a significant role in reducing the experimental burden associated with qualifying GUW techniques for nuclear power plant examinations.

Meyer, R. M.; Ramuhalli, P.; Doctor, S. R. [Applied Physics, Pacific Northwest National Laboratory, Richland, WA 99352 (United States); Bond, L. J. [Center for Nondestructive Evaluation, Iowa State University, Ames, IA 50011 (United States)

2013-01-25T23:59:59.000Z

53

Development of directional capabilities to an ultradeep water dynamic kill simulator and simulations runs  

E-Print Network [OSTI]

, the increasing demand of oil and gas is the impetus to search for oil in more difficult and challenging areas. One challenging area is offshore in ultradeep water, with water depths greater than 5000 ft. This is the new arena for drilling technology...

Meier, Hector Ulysses

2005-11-01T23:59:59.000Z

54

Mathematical Model for Heavy OilWaterGas Stratified Flow in Horizontal Pipes  

Science Journals Connector (OSTI)

A one-dimensional, isothermal, transient model for the stratified flow of heavy oil, water and gas, in horizontal pipelines, is presented. The two-fluid mathematical model consists of mass, momentum and energy...

C. Centeno-Reyes; O. Cazarez-Candia

2012-01-01T23:59:59.000Z

55

Humans can run on water using big instantly-changable shoes  

E-Print Network [OSTI]

, support including hydrofoils and planing boats. These tend to use one mechanism for support (a planing is still open. But it is possible if the wings are in the water. The oscillating wing craft, the Pogofoil

Ruina, Andy L.

56

Significance of Smoking Machine Toxicant Yields to Blood-Level Exposure in Water Pipe Tobacco Smokers  

Science Journals Connector (OSTI)

...polyaromatic hydrocarbons, volatile aldehydes...unpublished data). With a tobacco...charcoal is used to heat sweetened and...hot charcoal combustion products are...product-specific test data on harmful smoke...polyaromatic hydrocarbons (PAH) were...together, the data show that water...

Alan L. Shihadeh and Thomas E. Eissenberg

2011-11-01T23:59:59.000Z

57

Damping in LMFBR pipe systems  

SciTech Connect (OSTI)

LMFBR pipe systems typically utilize a thicker insulation package than that used on water plant pipe systems. They are supported with special insulated pipe clamps. Mechanical snubbers are employed to resist seismic loads. Recent laboratory testing has indicated that these features provide significantly more damping than presently allowed by Regulatory Guide 1.61 for water plant pipe systems. This paper presents results of additional in-situ vibration tests conducted on FFTF pipe systems. Pipe damping values obtained at various excitation levels are presented. Effects of filtering data to provide damping values at discrete frequencies and the alternate use of a single equivalent modal damping value are discussed. These tests further confirm that damping in typical LMFBR pipe systems is larger than presently used in pipe design. Although some increase in damping occurred with increased excitation amplitude, the effect was not significant. Recommendations are made to use an increased damping value for both the OBE and DBE seismic events in design of LMFBR pipe systems.

Anderson, M.J.; Barta, D.A.; Lindquist, M.R.; Renkey, E.J.; Ryan, J.A.

1983-06-01T23:59:59.000Z

58

Heat Transfer Performance and Piping Strategy Study for Chilled Water Systems at Low Cooling Loads  

E-Print Network [OSTI]

% of energy used in the commercial sector; commercial use is about 18.2% of the total energy used (EIA, 2010). Air conditioning is becoming more widely used in commercial buildings. The chilled water system is a very important component in large air....1 Simulation baseline Total face area / Face velocity 44 ft2 / 477.3 cfm Coil FH?FL 36 inch?88 inch Rows ? FPI 8 ? 11 Fin thickness / Material 0.008 inch / AL Tube outside diameter / Wall 5/8 inch / 0.025 inch Interior tube wall area Ai 759 ft2 Exterior...

Li, Nanxi 1986-

2012-12-05T23:59:59.000Z

59

A mathematical model for unsteady mixed flows in closed water pipes  

E-Print Network [OSTI]

We present the derivation of a new unidirectionnal model for unsteady mixed flows in non uniform closed domains. We introduce a local reference frame to take into account the local perturbation caused by the changes of section and slope. Then an asymptotic analysis is performed to obtain a model for the free surface flow and another for the pressurised flow. By coupling these models through the transition points by the use of a common set of variables and a suitable pressure law, we obtain a simple formulation called PFS-model close to the shallow water equations with source terms. It takes into account the changes of section and the slope variation in a continuous way through transition points.

Bourdarias, Christian; Gerbi, Stphane

2008-01-01T23:59:59.000Z

60

CMS Runs  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Runs Runs Web Based Monitoring Run Summary DQM Run Registry Commissioning & Run Coordination Online WorkBook Global Run Data Analysis FNAL ROC Process Summary [May-Dec 2007] Text output of Run Summary Global File List in dCache Directory Index DBS Discovery Aug 2008: ROOT Jul 2008: ROOT Jun 2008: ROOT May 2008: ROOT Mar 2008: ROOT Nov/Dec 2007: Streamer ROOT Sep 2007: Streamer ROOT Aug 2007: Streamer ROOT Jul 2007: Streamer ROOT Jun 2007: Streamer ROOT DQM May 2007: Streamer ROOT DQM PhEDEx Transfer State Cruzet4 Files Transferred Cruzet3 Files Transferred Cruzet2 Files Transferred GlobalCruzet1 Files Transferred GlobalMar08 Files Transferred to FNAL GlobalNov07 Files Transferred to FNAL GlobalSep07 Files Transferred to FNAL GlobalAug07 Files Transferred to FNAL

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

An air-to-air heat pump (COP-3.11 at 470 F (8.30C)) run alternately with an electric-resistance water  

E-Print Network [OSTI]

- ter than that of the system using electric resistance water heating. An analytical tinclel predicts of a high-efficiency heat pump'/electric-resistance .waterheater (IIP/IZR) system. TEST FACILITIES#12;/ ABSTRACT An air-to-air heat pump (COP-3.11 at 470 F (8.30C)) run alternately with an electric

Oak Ridge National Laboratory

62

CRAD, Nuclear Facility Construction - Piping and Pipe Supports...  

Office of Environmental Management (EM)

Nuclear Facility Construction - Piping and Pipe Supports Inspection - March 29, 2012 CRAD, Nuclear Facility Construction - Piping and Pipe Supports Inspection - March 29, 2012...

63

Apparatus for stringing well pipe of casing  

SciTech Connect (OSTI)

An apparatus for use in running a string of threaded well pipe or casing in a vertical configuration in a deep well bore which is adapted to convert a top head drive drilling rig for use in running each length of pipe into the well bore. A drive spindle adaptor is provided which may be securely attached in a removably mounted manner to the rotary drive spindle or sub of a top head drive drilling rig. The drive spindle includes a pair of opposing, outwardly extending lugs disposed at a right angle to the axial direction of the spindle and a true centering guide means. A collar is included which is provided with frictional gripping members for removably securing the collar to one end of a length of conventional pipe and a pair of axially extending, spaced ears which cooperate upon engagement with said lugs on said spindle adaptor to transfer rotary motion of said spindle to said length of pipe.

Sexton, J.L.

1984-04-17T23:59:59.000Z

64

Building Energy Software Tools Directory: Pipe-Flo  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Pipe-Flo Pipe-Flo Pipe-flo logo Flow analysis software used to design, optimize, troubleshoot and simulate the operation of piping systems of any size or configuration. PIPE-FLO provides a total picture of the piping system including the flow and pressures in pipelines, along with the interaction of pumps, control valves, and flow meters. PIPE-FLO products are used worldwide in a variety of applications throughout many industries including HVAC, fire sprinkler, wastewater collection and treatment, mining, ultra-pure water, chemical processing, power generation, pulp & paper and general industrial. Screen Shots Keywords piping analysis, pump selection, piping design, hydraulic analysis, pump sizing, pressure drop calculator, hydraulic modeling, steam distribution,

65

Vapor spill pipe monitor  

DOE Patents [OSTI]

The invention is a method and apparatus for continually monitoring the composition of liquefied natural gas flowing from a spill pipe during a spill test by continually removing a sample of the LNG by means of a probe, gasifying the LNG in the probe, and sending the vaporized LNG to a remote ir gas detector for analysis. The probe comprises three spaced concentric tubes surrounded by a water jacket which communicates with a flow channel defined between the inner and middle, and middle and outer tubes. The inner tube is connected to a pump for providing suction, and the probe is positioned in the LNG flow below the spill pipe with the tip oriented partly downward so that LNG is continuously drawn into the inner tube through a small orifice. The probe is made of a high thermal conductivity metal. Hot water is flowed through the water jacket and through the flow channel between the three tubes to provide the necessary heat transfer to flash vaporize the LNG passing through the inner channel of the probe. The gasified LNG is transported through a connected hose or tubing extending from the probe to a remote ir sensor which measures the gas composition.

Bianchini, G.M.; McRae, T.G.

1983-06-23T23:59:59.000Z

66

Using Flexible Pipe (poly-pipe) with Surface Irrigation  

E-Print Network [OSTI]

Aimed at farmers and irrigators who want to irrigate their crops using flexible plastic pipes (commonly called "poly-pipe), this publication highlights (1) advantages of using poly-pipe, (2) factors to consider in selecting such pipe, and (3...

Peries, Xavier; Enciso, Juan

2005-10-05T23:59:59.000Z

67

Analysis of water and soil from the wetlands of Upper Three Runs Creek. Volume 2A, Analytical data packages September--October 1991 sampling  

SciTech Connect (OSTI)

Shallow water and soils along Upper Three Runs Creek (UTRC) and associated wetlands between SRS Road F and Cato Road were sampled for nonradioactive and radioactive constituents. The sampling program is associated with risk evaluations being performed for various regulatory documents in these areas of the Savannah River Site (SRS). WSRC selected fifty sampling sites bordering the Mixed Waste Management Facility (MWMF), F- and H-Area Seepage Basins (FHSB), and the Sanitary Landfill (SL). The analytical results from this study provided information on the water and soil quality in UTRC and its associated wetlands. The analytical results from this investigation indicated that the primary constituents and radiological indicators detected in the shallow water and soils were tritium, gross alpha, radium 226, total radium and strontium 90. This investigation involved the collection of shallow water samples during the Fall of 1991 and the Spring of 1992 at fifty (50) sampling locations. Sampling was performed during these periods to incorporate high and low water table periods. Samples were collected from three sections along UTRC denoted as Phase I (MWMF), Phase II (FHSB) and Phase III (SL). One vibracored soil sample was also collected in each phase during the Fall of 1991. This document is compiled solely of experimental data obtained from the sampling procedures.

Haselow, L.A.; Rogers, V.A. [Westinghouse Savannah River Co., Aiken, SC (United States); Riordan, C.J. [Metcalf and Eddy, Inc. (United States); Eidson, G.W.; Herring, M.K. [Normandeau Associates, Inc. (United States)

1992-08-01T23:59:59.000Z

68

CRAD, Nuclear Facility Construction - Piping and Pipe Supports Inspection -  

Broader source: Energy.gov (indexed) [DOE]

Construction - Piping and Pipe Supports Construction - Piping and Pipe Supports Inspection - March 29, 2012 CRAD, Nuclear Facility Construction - Piping and Pipe Supports Inspection - March 29, 2012 March 29, 2012 Nuclear Facility Construction - Piping and Pipe Supports Inspection Criteria, Approach and Lines of Inquiry (HSS CRAD 45-52, Rev. 0) For the purpose of this criteria review and approach, this Criteria Review and Approach Document (CRAD) includes piping and pipe supports and attachments of the pipe supports to structures (concrete, structural steel, or embed plates). Pipe supports include rigid restraints, welded attachments to piping, struts, snubbers, spring cans, and constant supports. Inspection of pipe whip restraints are also included in this CRAD. Selection of nuclear facility piping systems for inspection should be

69

Running Large Scale Jobs  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Running Large Scale Jobs Running Large Scale Jobs Users face various challenges with running and scaling large scale jobs on peta-scale production systems. For example, certain...

70

Seismic fragility analysis of buried steel piping at P, L, and K reactors  

SciTech Connect (OSTI)

Analysis of seismic strength of buried cooling water piping in reactor areas is necessary to evaluate the risk of reactor operation because seismic events could damage these buried pipes and cause loss of coolant accidents. This report documents analysis of the ability of this piping to withstand the combined effects of the propagation of seismic waves, the possibility that the piping may not behave in a completely ductile fashion, and the distortions caused by relative displacements of structures connected to the piping.

Wingo, H.E.

1989-10-01T23:59:59.000Z

71

Water Heaters and Hot Water Distribution Systems  

E-Print Network [OSTI]

Building Energy Efficiency Standards .. 4 Multi-Family Water Heating.. 4 Pipe HeatBuilding Energy Efficiency Standards The scope of this task included the following subtasks; Multi-Family Water Heating, Pipe Heat

Lutz, Jim

2012-01-01T23:59:59.000Z

72

Pipe crawler apparatus  

DOE Patents [OSTI]

A pipe crawler apparatus particularly useful for 3-inch and 4-inch diameter pipes is provided. The pipe crawler apparatus uses a gripping apparatus in which a free end of a piston rod is modified with a bearing retaining groove. Bearings, placed within the groove, are directed against a camming surface of three respective pivoting support members. The non-pivoting ends of the support members carry a foot-like gripping member that, upon pivoting of the support member, engages the interior wall of the pipe.

Hovis, Gregory L. (North Augusta, SC); Erickson, Scott A. (Augusta, GA); Blackmon, Bruce L. (Aiken, SC)

2002-01-01T23:59:59.000Z

73

Air-Side Energy Use Calculations for Four HVAC Systems: Dual Duct Constant Volume (DDCAV), Dual Duct Variable Volume (DDVAV), Constant Volume with Reheat (CAVRH), Variable Volume with Reheat (VAVRH), Four Pipe Fan Coil Unit (FC), Four Pipe Induction Unit (FI), and Single Zone (SZ) Systems, Revised June 2002  

E-Print Network [OSTI]

(CAVRH), and variable volume with reheat (VAVRH), four pipe fan coil unit (FC), four pipe induction unit (FI), and a single zone air conditioning system (SZ). These calculations are presented in spreadsheets that include a running commentary so...

Haberl, J. S.; Bou-Saada, T. E.; Saman, N. F.

2001-01-01T23:59:59.000Z

74

Conventional Storage Water Heater Basics | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Conventional Storage Water Heater Basics Conventional Storage Water Heater Basics Conventional Storage Water Heater Basics July 30, 2013 - 3:39pm Addthis Illustration showing the components of a storage water heater. On top of the tank are two thin pipes; one pipe is the hot water outlet, and the other is the cold water inlet. A large pipe in the middle is called a vent pipe. A pressure/temperature relief valve is also on top of the tank and is connected to an open pipe that runs down the side of the tank. Another valve near the bottom of the outside of the tank is the thermostat and gas valve. A cutout shows the parts inside the tank, which include a large tube called a flue tube/heat exchanger. Inside this tube is a jagged insert called a flue baffle. Beside the flue tube/heat exchanger is a thin tube called the anode rod. At the bottom of the tank is a gas burner, and beneath the burner are combustion air openings.

75

Running jobs on Euclid  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Running jobs Running jobs Overview and Basic Description Euclid is a single node system with 48 processors. It supports both multiprocessing (MPI) and multithreading programming...

76

Running Jobs Intermittently Slow  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Jobs Intermittently Slow Running Jobs Intermittently Slow October 2, 2014 (0 Comments) Symptom: User jobs are seeing intermittent slowness, jobs can run very slow in certain stages...

77

Hot Leg Piping Materials Issues  

SciTech Connect (OSTI)

With Naval Reactors (NR) approval of the Naval Reactors Prime Contractor Team (NRPCT) recommendation to develop a gas cooled reactor directly coupled to a Brayton power conversion system as the space nuclear power plant (SNPP) for Project Prometheus (References a and b) the reactor outlet piping was recognized to require a design that utilizes internal insulation (Reference c). The initial pipe design suggested ceramic fiber blanket as the insulation material based on requirements associated with service temperature capability within the expected range, very low thermal conductivity, and low density. Nevertheless, it was not considered to be well suited for internal insulation use because its very high surface area and proclivity for holding adsorbed gases, especially water, would make outgassing a source of contaminant gases in the He-Xe working fluid. Additionally, ceramic fiber blanket insulating materials become very friable after relatively short service periods at working temperatures and small pieces of fiber could be dislodged and contaminate the system. Consequently, alternative insulation materials were sought that would have comparable thermal properties and density but superior structural integrity and greatly reduced outgassing. This letter provides technical information regarding insulation and materials issues for the Hot Leg Piping preconceptual design developed for the Project Prometheus space nuclear power plant (SNPP).

V. Munne

2006-07-19T23:59:59.000Z

78

Fast reactor power plant design having heat pipe heat exchanger  

DOE Patents [OSTI]

The invention relates to a pool-type fission reactor power plant design having a reactor vessel containing a primary coolant (such as liquid sodium), and a steam expansion device powered by a pressurized water/steam coolant system. Heat pipe means are disposed between the primary and water coolants to complete the heat transfer therebetween. The heat pipes are vertically oriented, penetrating the reactor deck and being directly submerged in the primary coolant. A U-tube or line passes through each heat pipe, extended over most of the length of the heat pipe and having its walls spaced from but closely proximate to and generally facing the surrounding walls of the heat pipe. The water/steam coolant loop includes each U-tube and the steam expansion device. A heat transfer medium (such as mercury) fills each of the heat pipes. The thermal energy from the primary coolant is transferred to the water coolant by isothermal evaporation-condensation of the heat transfer medium between the heat pipe and U-tube walls, the heat transfer medium moving within the heat pipe primarily transversely between these walls.

Huebotter, P.R.; McLennan, G.A.

1984-08-30T23:59:59.000Z

79

Fast reactor power plant design having heat pipe heat exchanger  

DOE Patents [OSTI]

The invention relates to a pool-type fission reactor power plant design having a reactor vessel containing a primary coolant (such as liquid sodium), and a steam expansion device powered by a pressurized water/steam coolant system. Heat pipe means are disposed between the primary and water coolants to complete the heat transfer therebetween. The heat pipes are vertically oriented, penetrating the reactor deck and being directly submerged in the primary coolant. A U-tube or line passes through each heat pipe, extended over most of the length of the heat pipe and having its walls spaced from but closely proximate to and generally facing the surrounding walls of the heat pipe. The water/steam coolant loop includes each U-tube and the steam expansion device. A heat transfer medium (such as mercury) fills each of the heat pipes. The thermal energy from the primary coolant is transferred to the water coolant by isothermal evaporation-condensation of the heat transfer medium between the heat pipe and U-tube walls, the heat transfer medium moving within the heat pipe primarily transversely between these walls.

Huebotter, Paul R. (Western Springs, IL); McLennan, George A. (Downers Grove, IL)

1985-01-01T23:59:59.000Z

80

Flexible ultrasonic pipe inspection apparatus  

DOE Patents [OSTI]

Pipe crawlers, pipe inspection {open_quotes}rabbits{close_quotes} and similar vehicles are widely used for inspecting the interior surfaces of piping systems, storage tanks and process vessels for damaged or flawed structural features. This paper describes the design of a flexible, modular ultrasonic pipe inspection apparatus.

Jenkins, C.F.; Howard, B.D.

1994-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

SSRL- Experimental Run Schedule  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

FY2008 Experimental Run Schedules 2008 Run Ends August 11, 2008. User Operations will resume November 2008. Operating Maintenance Beam Line Schedule FY2009 FY2008 X-ray (1-4,...

82

Advanced materials for flexible pipe construction  

SciTech Connect (OSTI)

New materials have been developed for use in the construction of non-bonded flexible pipe for offshore oil and gas production in sever environmental conditions. Internal environmental conditions include high conveyed fluid temperatures with sour and waxy production fluids. External environmental conditions include low water temperatures and water depths of up to 2,000 m. In this paper, the results of test to verify the suitability of materials developed by Wellstream and its vendors specifically for these severe applications is presented.

Kalman, M.D.; Belcher, J.R.; Plaia, J.R. [Wellstream Company, L.P., Panama City, FL (United States). Dept. of Engineering

1995-10-01T23:59:59.000Z

83

Composite drill pipe  

DOE Patents [OSTI]

A composite pipe segment is formed to include tapered in wall thickness ends that are each defined by opposed frustoconical surfaces conformed for self centering receipt and intimate bonding contact within an annular space between corresponding surfaces of a coaxially nested set of metal end pieces. The distal peripheries of the nested end pieces are then welded to each other and the sandwiched and bonded portions are radially pinned. The composite segment may include imbedded conductive leads and the axial end portions of the end pieces are shaped to form a threaded joint with the next pipe assembly that includes a contact ring in one pipe assembly pierced by a pointed contact in the other to connect the corresponding leads across the joint.

Leslie, James C. (Fountain Valley, CA); Leslie, II, James C. (Mission Viejo, CA); Heard, James (Huntington Beach, CA); Truong, Liem (Anaheim, CA), Josephson; Marvin (Huntington Beach, CA), Neubert; Hans (Anaheim, CA)

2008-12-02T23:59:59.000Z

84

Arnold Schwarzenegger WATER HEATERS AND HOT WATER  

E-Print Network [OSTI]

Arnold Schwarzenegger Governor WATER HEATERS AND HOT WATER DISTRIBUTION SYSTEMS;#12;Appendices Appendix A. Multifamily Water Heating Construction Practices, Pricing and Availability Survey Report Appendix B. Multifamily Water Heating Controls Performance Field Report Appendix C. Pipe

85

Apparatus for moving a pipe inspection probe through piping  

DOE Patents [OSTI]

A method and apparatus are disclosed for controllably moving devices for cleaning or inspection through piping systems, including piping systems with numerous piping bends therein, by using hydrostatic pressure of a working fluid introduced into the piping system. The apparatus comprises a reservoir or other source for supplying the working fluid to the piping system, a launch tube for admitting the device into the launcher and a reversible, positive displacement pump for controlling the direction and flow rate of the working fluid. The device introduced into the piping system moves with the flow of the working fluid through the piping system. The launcher attaches to the valved ends of a piping system so that fluids in the piping system can recirculate in a closed loop. The method comprises attaching the launcher to the piping system, supplying the launcher with working fluid, admitting the device into the launcher, pumping the working fluid in the direction and at the rate desired so that the device moves through the piping system for pipe cleaning or inspection, removing the device from the launcher, and collecting the working fluid contained in the launcher. 8 figs.

Zollinger, W.T.; Appel, D.K.; Lewis, G.W.

1995-07-18T23:59:59.000Z

86

User_RunReports  

Broader source: Energy.gov (indexed) [DOE]

Running Standard Reports Running Standard Reports © 2011 SuccessFactors, Inc. - 1 - SuccessFactors Learning Confidential. All rights reserved. Job Aid: Running Standard Reports Purpose The purpose of this job aid is to guide users through the step-by-step process of running standard reports in SuccessFactors Learning. Task A. Run Standard Report From the Home page, click the Reports easy link. In the Report Name table, locate the report you want to generate. Click the expand icon ( ) to expand the report group. Click the title link. For this example, select the User Curriculum Status Group by Item Details report. Note: Click Help ( ) for additional information on reports. 1 1 2 2 3 3 Run Standard Report 13 Steps Task A SuccessFactors Learning v 6.4 User Job Aid

87

Running Jobs on Hopper  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Queues and Policies Monitoring Jobs Using OpenMP with MPI Memory Considerations Runtime Tuning Options Running Large Scale Jobs Trouble Shooting and Error Messages Completed Jobs...

88

Electron Cloud in Steel Beam Pipe vs Titanium Nitride Coated and Amorphous Carbon Coated Beam Pipes in Fermilab's Main Injector  

SciTech Connect (OSTI)

This paper documents the use of four retarding field analyzers (RFAs) to measure electron cloud signals created in Fermilabs Main Injector during 120 GeV operations. The first data set was taken from September 11, 2009 to July 4, 2010. This data set is used to compare two different types of beam pipe that were installed in the accelerator. Two RFAs were installed in a normal steel beam pipe like the rest of the Main Injector while another two were installed in a one meter section of beam pipe that was coated on the inside with titanium nitride (TiN). A second data run started on August 23, 2010 and ended on January 10, 2011 when Main Injector beam intensities were reduced thus eliminating the electron cloud. This second run uses the same RFA setup but the TiN coated beam pipe was replaced by a one meter section coated with amorphous carbon (aC). This section of beam pipe was provided by CERN in an effort to better understand how an aC coating will perform over time in an accelerator. The research consists of three basic parts: (a) continuously monitoring the conditioning of the three different types of beam pipe over both time and absorbed electrons (b) measurement of the characteristics of the surrounding magnetic fields in the Main Injector in order to better relate actual data observed in the Main Injector with that of simulations (c) measurement of the energy spectrum of the electron cloud signals using retarding field analyzers in all three types of beam pipe.

Backfish, Michael

2013-04-01T23:59:59.000Z

89

Guidable pipe plug  

DOE Patents [OSTI]

A plugging device for closing an opening defined by an end of a pipe with sealant comprises a cap, an extension, an inner seal, a guide, and at least one stop. The cap has an inner surface which defines a chamber adapted for retaining the sealant. The chamber is dimensioned slightly larger than the end so as to receive the end. The chamber and end define a gap therebetween. The extension has a distal end and is attached to the inner surface opposite the distal end. The inner seal is attached to the extension and sized larger than the opening. The guide is positioned forward of the inner seal and attached to the distal end. The guide is also dimensioned to be inserted into the opening. The stop is attached to the extender, and when the stop is disposed in the pipe, the stop is movable with respect to the conduit in one direction and also prevents misalignment of the cap with the pipe. A handle can also be included to allow the cap to be positioned robotically.

Glassell, Richard L. (Knoxville, TN); Babcock, Scott M. (Farragut, TN); Lewis, Benjamin E. (Farragut, TN)

2001-01-01T23:59:59.000Z

90

Pipe-to-pipe impact analysis - Nuclear Engineering Multimedia  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Pipe-to-pipe impact analysis Pipe-to-pipe impact analysis Director's Welcome Organization Achievements Highlights Fact Sheets, Brochures & Other Documents Multimedia Library About Nuclear Energy Nuclear Reactors Designed by Argonne Argonne's Nuclear Science and Technology Legacy Opportunities within NE Division Visit Argonne Work with Argonne Contact us For Employees Site Map Help Join us on Facebook Follow us on Twitter NE on Flickr Celebrating the 70th Anniversary of Chicago Pile 1 (CP-1) Argonne OutLoud on Nuclear Energy Argonne Energy Showcase 2012 Engineering Analysis Multimedia Bookmark and Share EA Multimedia, a collection of videos and audios featuring activities related to the Engineering Analysis Department Pipe-to-pipe impact analysis Quicktime video Quicktime Format - High Bandwidth | Size: 12 MB | Bit Rate:

91

Simulation Models for Improved Water Heating Systems  

E-Print Network [OSTI]

The DLM accounts for the distribution heat loss within eachHot-Water Distribution System Piping Heat Loss FactorsPhaseHot Water Distribution System Piping Heat Loss Factors-

Lutz, Jim

2014-01-01T23:59:59.000Z

92

Development and Manufacture of Cost Effective Composite Drill Pipe  

SciTech Connect (OSTI)

This technical report presents the engineering research, process development and data accomplishments that have transpired to date in support of the development of Cost Effective Composite Drill Pipe (CDP). The report presents progress made from October 1, 2004 through September 30, 2005 and contains the following discussions: (1) Qualification Testing; (2) Prototype Development and Testing of ''Smart Design'' Configuration; (3) Field Test Demonstration; and (4) Commercial order for SR-CDP from Torch International. The objective of this contract is to develop and demonstrate ''cost effective'' Composite Drill Pipe. It is projected that this drill pipe will weigh less than half of its steel counter part. The resultant weight reduction will provide enabling technology that will increase the lateral distance that can be reached from an offshore drilling platform and the depth of water in which drilling and production operations can be carried out. Further, composite drill pipe has the capability to carry real time signal and power transmission within the pipe walls. CDP can also accommodate much shorter drilling radius than is possible with metal drill pipe. As secondary benefits, the lighter weight drill pipe can increase the storage capability of floating off shore drilling platforms and provide substantial operational cost savings.

James C. Leslie; James C. Leslie II; Lee Truong; James T. Heard; Steve Loya

2006-02-20T23:59:59.000Z

93

Running Jobs on Franklin  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

jobs jobs Running jobs Job Launch Overview Parallel applications can not run on the login nodes. They must be launched onto the compute nodes via the aprun command. Read More » Interactive Jobs Interactive jobs may be run on Franklin by requesting resources from the batch system. "qsub -I -V -q interactive -lmppwidth=[num_cores]" is the basic command to request interactive resources. Read More » Submitting Batch Jobs Basic batch scripts, torque keywords. Sample scripts for advanced work flows: running multiple jobs, MPMD jobs, job dependencies. Read More » Queues and Policies Queue configuration and limits, policies and tips for getting your job through the queue faster. Read More » Monitoring Jobs Once a job is submitted it can be monitored, held, deleted and in some

94

Running Jobs on Edison  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

jobs jobs Running jobs Quick Instructions for Hopper users Major differences between running jobs on Hopper and Edison are: the number of cores per node are different, and the Intel Hyper-threading option is available on Edison. Read More » Overview A brief overview of how to run jobs on Edison. Read More » Interactive Jobs Interactive jobs may be run on Edison by requesting resources from the batch system. "qsub -I -V -q interactive -lmppwidth=[num_cores]" is the basic command to request interactive resources. Read More » Batch Jobs Batch script options. Read More » Example Batch Scripts Sample batch scripts for MPI, OpenMP, hybrid applications and various workflows. Read More » Job Launch Command: aprun Aprun is the job launcher for Cray XC30. There are many options that are

95

Running Jobs on Edison  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

jobs Running jobs Quick Instructions for Hopper users Edison has the same number of cores per node, 24, but has a larger per core memory, 2.67 GB vs. 1.3 GB. On Edison the Intel...

96

Rehabilitating underground pipes  

SciTech Connect (OSTI)

Nearly 500,000 miles of industrial pipeline in the US are almost three times older than their expected usefulness. And aging pipes that are improperly maintained can cause a variety of environmental problems. It is essential for facilities to have a system of planned maintenance procedures to prevent structural failures related to inflow/infiltration and exfiltration. Trenchless repair methods, often referred to as pipeline rehabilitation, require the plant engineer to consider a range of activities, including demand projection, system performance assessment, investigation, evaluation of defects and deficiencies, remedial options, and implementation. Two methods of pipeline rehabilitation, slip lining and cured-in-place, are described.

Sorrell, P. [Insituform Technologies, Inc., Memphis, TN (United States)

1995-06-05T23:59:59.000Z

97

Pipe line pigs have varied applications in operations. Part 2  

SciTech Connect (OSTI)

In the early days of pipelining, it was discovered that running a swab equipped with leather disks through the line removed paraffin deposited on the pipe wall increasing the flow without increasing the power input. Blades were added to the device later to improve the efficiency of wax removal, which also decreased the number of runs and the cost of pigging. Pig developers learned from their successes as well as their failures. Part 1 of this work focused on the construction and kaliper pigs, and the second part describes the general form and function of the different operational pigs, i.e., calipers, cleaners, and spheres.

Vernooy, B.

1980-10-01T23:59:59.000Z

98

HYDROGEN IGNITION MECHANISM FOR EXPLOSIONS IN NUCLEAR FACILITY PIPE SYSTEMS  

SciTech Connect (OSTI)

Hydrogen and oxygen generation due to the radiolysis of water is a recognized hazard in pipe systems used in the nuclear industry, where the accumulation of hydrogen and oxygen at high points in the pipe system is expected, and explosive conditions exist. Pipe ruptures at nuclear facilities were attributed to hydrogen explosions inside pipelines, in nuclear facilities, i.e., Hamaoka, Nuclear Power Station in Japan, and Brunsbuettel in Germany. Prior to these accidents an ignition source for hydrogen was questionable, but these accidents, demonstrated that a mechanism was, in fact, available to initiate combustion and explosion. Hydrogen explosions may occur simultaneously with water hammer accidents in nuclear facilities, and a theoretical mechanism to relate water hammer to hydrogen deflagrations and explosions is presented herein.

Leishear, R

2010-05-02T23:59:59.000Z

99

Running jobs on Euclid  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Running jobs Running jobs Running jobs Overview and Basic Description Euclid is a single node system with 48 processors. It supports both multiprocessing (MPI) and multithreading programming models. Interactive Jobs All Euclid jobs are interactive. To launch an MPI job, type in this at the shell prompt: % mpirun -np numprocs executable_name where numprocs is the total number of MPI processes that will be executed. Interactive Usage Policy Due to the dynamic and unpredictable nature of visualization and data analysis, NERSC will attempt to provide equitable access to Euclid's resources through the enforcement of certain usage guidelines. The most crucial resources are the processor cores (48) and memory (512 GB). Processor Core Usage Policy No single interactive job should use more than 12 processor cores. A single

100

Geothermal district piping - A primer  

SciTech Connect (OSTI)

Transmission and distribution piping constitutes approximately 40 -60% of the capital costs of typical geothermal district heating systems. Selections of economical piping suitable for the fluid chemistry is critical. Presently, most piping (56%) in geothermal systems is of asbestos cement construction. Some fiberglass (19%) and steel (19%) is also in use. Identification of an economical material to replace asbestos cement is important to future project development. By providing information on relative costs, purchase considerations, existing material performance and new products, this report seeks to provide a background of information to the potential pipe purchaser. A brief discussion of the use of uninsulated piping in geothermal district heating systems is also provided. 5 refs., 19 figs., 1 tab.

Rafferty, K.

1989-11-01T23:59:59.000Z

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Prometheus Hot Leg Piping Concept  

SciTech Connect (OSTI)

The Naval Reactors Prime Contractor Team (NRPCT) recommended the development of a gas cooled reactor directly coupled to a Brayton energy conversion system as the Space Nuclear Power Plant (SNPP) for NASA's Project Prometheus. The section of piping between the reactor outlet and turbine inlet, designated as the hot leg piping, required unique design features to allow the use of a nickel superalloy rather than a refractory metal as the pressure boundary. The NRPCT evaluated a variety of hot leg piping concepts for performance relative to SNPP system parameters, manufacturability, material considerations, and comparison to past high temperature gas reactor (HTGR) practice. Manufacturability challenges and the impact of pressure drop and turbine entrance temperature reduction on cycle efficiency were discriminators between the piping concepts. This paper summarizes the NRPCT hot leg piping evaluation, presents the concept recommended, and summarizes developmental issues for the recommended concept.

Gribik, Anastasia M. [Bechtel Bettis, Inc., Bettis Atomic Power Laboratory, West Mifflin, PA 15122 (United States); DiLorenzo, Peter A. [KAPL, Inc., Knolls Atomic Power Laboratory, Schenectady, NY 12301 (United States)

2007-01-30T23:59:59.000Z

102

Subterranean well pipe guiding apparatus  

SciTech Connect (OSTI)

A pipe guiding apparatus is described for vertically aligning pipe section joints in a derrick having a worktable and an elevator for vertically suspending at least one pipe section above the worktable. The apparatus is comprised of a rotary axle for horizontal attachment in the derrick, a frame attached to the rotary axle, a power cylinder for rotating the rotary axle, a pair of guide jaws pivotally attached to the forward end of the frame, and a cylinder for moving the guide jaws between open and closed positions. The power cylinder for rotating the axle and the cylinder for moving the guide jaws between open and closed positions. The power cylinder for rotating the axle and the cylinder for moving the guide jaws are remotely operated so that the frame can be selectively moved to a position whereby the guide jaws are adjacent a vertically suspended pipe section and the guide jaws thereafter are closed on the pipe section. 6 claims.

Scaggs, O.C.

1981-06-23T23:59:59.000Z

103

Flexible ultrasonic pipe inspection apparatus  

DOE Patents [OSTI]

A flexible, modular ultrasonic pipe inspection apparatus, comprising a flexible, hollow shaft that carries a plurality of modules, including at least one rotatable ultrasonic transducer, a motor/gear unit, and a position/signal encoder. The modules are connected by flexible knuckle joints that allow each module of the apparatus to change its relative orientation with respect to a neighboring module, while the shaft protects electrical wiring from kinking or buckling while the apparatus moves around a tight corner. The apparatus is moved through a pipe by any suitable means, including a tether or drawstring attached to the nose or tail, differential hydraulic pressure, or a pipe pig. The rotational speed of the ultrasonic transducer and the forward velocity of the apparatus are coordinated so that the beam sweeps out the entire interior surface of the pipe, enabling the operator to accurately assess the condition of the pipe wall and determine whether or not leak-prone corrosion damage is present.

Jenkins, Charles F. (Aiken, SC); Howard, Boyd D. (Augusta, GA)

1998-01-01T23:59:59.000Z

104

Tritium transport in the NuMI decay pipe region - modeling and comparison with experimental data  

SciTech Connect (OSTI)

The NuMI (Neutrinos at Main Injector) beam facility at Fermilab is designed to produce an intense beam of muon neutrinos to be sent to the MINOS underground experiment in Soudan, Minnesota. Neutrinos are created by the decay of heavier particles. In the case of NuMI, the decaying particles are created by interaction of high-energy protons in a target, creating mostly positive pions. These particles can also interact with their environment, resulting in production of a variety of short-lived radionuclides and tritium. In the NuMI beam, neutrinos are produced by 120 GeV protons from the Fermilab Main Injector accelerator which are injected into the NuMI beam line using single turn extraction. The beam line has been designed for 400 kW beam power, roughly a factor of 2 above the initial (2005-06) running conditions. Extracted protons are bent downwards at a 57mr angle towards the Soudan Laboratory. The meson production target is a 94 cm segmented graphite rod, cooled by water in stainless tubes on the top and bottom of the target. The target is followed by two magnetic horns which are pulsed to 200 kA in synchronization with the passage of the beam, producing focusing of the secondary hadron beam and its daughter neutrinos. Downstream of the second horn the meson beam is transported for 675 m in an evacuated 2 m diameter beam (''decay'') pipe. Subsequently, the residual mesons and protons are absorbed in a water cooled aluminum/steel absorber immediately downstream of the decay pipe. Some 200 m of rock further downstream ranges out all of the residual muons. During beam operations, after installation of the chiller condensate system in December 2005, the concentration of tritiated water in the MINOS sump flow of 177 gpm was around 12 pCi/ml, for a total of 0.010 pCi/day. A simple model of tritium transport and deposition via humidity has been constructed to aid in understanding how tritium reaches the sump water. The model deals with tritium transported as HTO, water in which one hydrogen atom has been replaced with tritium. Based on concepts supported by the modeling, a dehumidification system was installed during May 2006 that reduced the tritium level in the sump by a factor of two. This note is primarily concerned with tritium that was produced in the NuMI target pile, carried by air flow into the target hall and down the decay pipe passageway (where most of it was deposited). The air is exhausted through the existing air vent shaft EAV2 (Figure 1).

Hylen, J.; Plunkett, R.; /Fermilab

2007-03-01T23:59:59.000Z

105

MHK Technologies/Electric Generating Wave Pipe | Open Energy Information  

Open Energy Info (EERE)

Generating Wave Pipe Generating Wave Pipe < MHK Technologies Jump to: navigation, search << Return to the MHK database homepage Electric Generating Wave Pipe.jpg Technology Profile Primary Organization Able Technologies Technology Resource Click here Wave Technology Type Click here Point Absorber - Submerged Technology Readiness Level Click here TRL 1 3 Discovery Concept Def Early Stage Dev Design Engineering Technology Description The EGWAP incorporates a specially designed environmentally sound hollow noncorroding pipe also known as a tube or container whose total height is from the ocean floor to above the highest wave peak The pipe is anchored securely beneath the ocean floor When the water level in the pipe rises due to wave action a float rises and a counterweight descends This action will empower a main drive gear and other gearings to turn a generator to produce electricity The mechanism also insures that either up or down movement of the float will turn the generator drive gear in the same direction Electrical output of the generator is fed into a transmission cable

106

Investigation of PVC Pipe Failure at Terrell State Hospital Final Report  

E-Print Network [OSTI]

At the request of Terrell State Hospital and MHMR, the Energy Systems Laboratory at Texas A&M University investigated the failure of the PVC pipes serving the chilled water loop at Terrell State Hospital. There were two PVC pipe failures where...

Wei, G.; Deng, S.; Claridge, D. E.; Turner, W. D.

2000-01-01T23:59:59.000Z

107

Equations shorten pipe collapse calculations  

SciTech Connect (OSTI)

The API suggests collapse pressure equations for long, perfectly round, steel oil field casing, tubing, drill pipe, and line pipe. Operating and service company engineers can substitute two pipe collapse pressure equations for the 12 API equations now in general use. The shorthand results are almost the same as those from the API equations. The shorthand method has the additional advantage of allowing units from any measurement system. The API equations restrict calculations to US units only. The equation box lists the API (Equations 1--12) and the shorthand (Equations 13--14) equations. The API equations are based on work started shortly after the turn of the century.

Avakov, V.A. [Halliburton Energy Services, Duncan, OK (United States)

1995-04-10T23:59:59.000Z

108

Analysis and remedial treatment of a steel pipe-jacking accident in complex underground environment  

Science Journals Connector (OSTI)

Abstract Steel pipe-jacking has been widely used in the construction of water supply and sewage pipelines because of its self-sealing qualities, ability to withstand high pressure and lower environmental impact. The trend in steel pipe-jacking is towards larger diameters, longer drive lengths, and better adaptation to more complex underground conditions. Steel pipe-jacking, in which a flexible pipe is used, is different from concrete pipe-jacking where a rigid pipe is used. With increasing diameters and drive lengths, the mechanical characteristics of deep-buried steel pipe-jacking in complex underground conditions have presented new challenges for designers. In this study, the forces involved and the stability of steel pipe-jacking are analyzed by examining an example of steel pipe-jacking in a complex underground environment. The causes of high deflection under elevated water and earth pressure and local buckling incidents are investigated by the finite element method. The results show that, in this particular case, confining pressure combined with jacking force leads to buckling. Two main remedial schemes are proposed: one is to increase the wall thickness of the pipe, and the other is to install stiffening ribs on the pipe where high deflection occurs. The effect of the two remedial schemes is presented and evaluated. In particular, various stiffening ribs are used in different deflection sections with grouting to decrease friction and lower the corresponding axial jacking force. This approach demonstrates that the structural strength of the pipeline has met the requirements after the rectification action is taken. The analysis and remedial treatment for this case study will provide a reference for effective design and construction of similar steel pipe-jacking.

Liang Zhen; Jin-Jian Chen; Pizhong Qiao; Jian-Hua Wang

2014-01-01T23:59:59.000Z

109

Running Jobs.ppt  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Submitting and Running Jobs on Submitting and Running Jobs on the Cray XT5 Richard Gerber NERSC User Services RAGerber@lbl.gov Joint Cray XT5 Workshop UC-Berkeley February 1, 2010 February 1, 2010 Joint Cray XT5 Workshop, UC Berkeley February 1, 2010 Joint Cray XT5 Workshop, UC Berkeley Outline * XT5 Overview * Creating and Submitting a Batch Job * How a Job Is Launched * Monitoring Your Job * Queues and Policies Hopper in blue; Jaguar in Orange; Kraken in Green February 1, 2010 Joint Cray XT5 Workshop, UC Berkeley Cray XT5 Overview Compute Node Compute Node Compute Node Compute Node Compute Node Compute Node Compute Node etc.... No local disk Login Node Login Node Login Node etc.... home Login Node Login Node $SCRATCH[1|2] /tmp/work/$USER /lustre/scratch/$USER

110

Household water treatment and safe storage product development in Ghana  

E-Print Network [OSTI]

Microbial and/or chemical contaminants can infiltrate into piped water systems, especially when the system is intermittent. Ghana has been suffering from aged and intermittent piped water networks, and an added barrier of ...

Yang, Shengkun, M. Eng. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

111

Heat Pipes: An Industrial Application  

E-Print Network [OSTI]

This paper reviews the basics of heat pipe exchangers. Included are how they are constructed, how they operate, where they have application, and various aspects of evaluating a potential application. After discussing the technical aspects of heat...

Murray, F.

1984-01-01T23:59:59.000Z

112

Jamaican red clay tobacco pipes  

E-Print Network [OSTI]

JAMAICAN RED CLAY TOBACCO PIPES A Thesis by KENAN PAUL HEIDTKE Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER OF ARTS December 1992 Major Subject...: Anthropology JAMAICAN RED CLAY TOBACCO PIPES A Thesis by KENAN PAUL HEIDTKE Approved as to style and content by: Dorm L. Hamilton (Chair of Committee) Frederick H. van Doorninck, J (Member) enry C. Schmidt (Member) Vaughn M. Bryant (Head...

Heidtke, Kenan Paul

2012-06-07T23:59:59.000Z

113

Running Boundary Condition  

E-Print Network [OSTI]

In this paper we argue that boundary condition may run with energy scale. As an illustrative example, we consider one-dimensional quantum mechanics for a spinless particle that freely propagates in the bulk yet interacts only at the origin. In this setting we find the renormalization group flow of U(2) family of boundary conditions exactly. We show that the well-known scale-independent subfamily of boundary conditions are realized as fixed points. We also discuss the duality between two distinct boundary conditions from the renormalization group point of view. Generalizations to conformal mechanics and quantum graph are also discussed.

Ohya, Satoshi; Tachibana, Motoi

2010-01-01T23:59:59.000Z

114

Running Boundary Condition  

E-Print Network [OSTI]

In this paper we argue that boundary condition may run with energy scale. As an illustrative example, we consider one-dimensional quantum mechanics for a spinless particle that freely propagates in the bulk yet interacts only at the origin. In this setting we find the renormalization group flow of U(2) family of boundary conditions exactly. We show that the well-known scale-independent subfamily of boundary conditions are realized as fixed points. We also discuss the duality between two distinct boundary conditions from the renormalization group point of view. Generalizations to conformal mechanics and quantum graph are also discussed.

Satoshi Ohya; Makoto Sakamoto; Motoi Tachibana

2010-05-25T23:59:59.000Z

115

CRAD, Nuclear Facility Construction- Piping and Pipe Supports Inspection- March 29, 2012  

Broader source: Energy.gov [DOE]

Nuclear Facility Construction - Piping and Pipe Supports Inspection Criteria, Approach and Lines of Inquiry (HSS CRAD 45-52, Rev. 0)

116

Program sizes flange or pipe-tap orifice plates  

SciTech Connect (OSTI)

A program has been developed for the HP-41CV programmable calculator that is designed to compute differential pressure across an orifice, gas flow through an orifice, or the orifice-plate bore for orifice plates with flange or pipe taps. It is designed to save time in extracting values from charts, tables, and graphs which are required to perform the calculations. It is based on equations and data from Spink. The program is run by inputing appropriate data via execution of a program entitled ''DATA IN,'' calculating differential pressure via program ''dH20,'' gas flow via program ''FLOW,'' and via program ''BORE.'' Flange-tap calculations are performed with FLAG 01 not set, while pipe-tap calculations are selected by setting FLAG 01.

Hogsett, J.E.

1984-03-12T23:59:59.000Z

117

Running Grid Jobs at NERSC  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Running Grid Jobs Running Grid Jobs | Tags: Grid How to submit a grid job to NERSC The following NERSC resources support job submission via Grid interfaces. Remote job submission...

118

Pipe crawler with extendable legs  

DOE Patents [OSTI]

A pipe crawler for moving through a pipe in inchworm fashion having front and rear leg assemblies separated by air cylinders to increase and decrease the spacing between assemblies. Each leg of the four legs of an assembly is moved between a wall-engaging, extended position and a retracted position by a separate air cylinder. The air cylinders of the leg assemblies are preferably arranged in pairs of oppositely directed cylinders with no pair lying in the same axial plane as another pair. Therefore, the cylinders can be as long as a leg assembly is wide and the crawler can crawl through sections of pipes where the diameter is twice that of other sections. The crawler carries a valving system, a manifold to distribute air supplied by a single umbilical air hose to the various air cylinders in a sequence controlled electrically by a controller. The crawler also utilizes a rolling mechanism, casters in this case, to reduce friction between the crawler and pipe wall thereby further extending the range of the pipe crawler. 8 figs.

Zollinger, W.T.

1992-06-16T23:59:59.000Z

119

Pipe crawler with extendable legs  

DOE Patents [OSTI]

A pipe crawler for moving through a pipe in inchworm fashion having front and rear leg assemblies separated by air cylinders to increase and decrease the spacing between assemblies. Each leg of the four legs of an assembly is moved between a wall-engaging, extended position and a retracted position by a separate air cylinder. The air cylinders of the leg assemblies are preferably arranged in pairs of oppositely directed cylinders with no pair lying in the same axial plane as another pair. Therefore, the cylinders can be as long a leg assembly is wide and the crawler can crawl through sections of pipes where the diameter is twice that of other sections. The crawler carries a valving system, a manifold to distribute air supplied by a single umbilical air hose to the various air cylinders in a sequence controlled electrically by a controller. The crawler also utilizes a rolling mechanism, casters in this case, to reduce friction between the crawler and pipe wall thereby further extending the range of the pipe crawler.

Zollinger, William T. (3927 Almon Dr., Martinez, GA 30907)

1992-01-01T23:59:59.000Z

120

Operation characteristics of cylindrical miniature grooved heat pipe using aqueous CuO nanofluids  

SciTech Connect (OSTI)

An experimental study was performed to investigate the operation characteristics of a cylindrical miniature grooved heat pipe using aqueous CuO nanofluid as the working fluid at some steady cooling conditions. The experiments were carried out under both the steady operation process and the unsteady startup process. The experiment results show that substituting the nanofluid for water as the working fluid can apparently improve the thermal performance of the heat pipe for steady operation. The total heat resistance and the maximum heat removal capacity of the heat pipe using nanofluids can maximally reduce by 50% and increase by 40% compared with that of the heat pipe using water, respectively. For unsteady startup process, substituting the nanofluid for water as the working fluid, cannot only improve the thermal performance, but also reduce significantly the startup time. (author)

Wang, Guo-Shan; Song, Bin; Liu, Zhen-Hua [School of Mechanical Engineering, Shanghai Jiaotong University, 200240 Shanghai (China)

2010-11-15T23:59:59.000Z

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Experimental Study on Fluid Mixing for Evaluation of Thermal Striping in T-Pipe Junction  

SciTech Connect (OSTI)

A water experiment is performed to investigate thermal striping phenomena in a T-pipe junction which is a typical geometry of fluid mixing. The flow velocity ratio and temperature difference were experimental parameters. The jet form was classified into four patterns; (1) impinging jet, (2) deflecting jet, (3) re-attachment jet and (4) wall jet according to the inflow condition. The parameter experiments showed that the jet form could be predicted by a momentum ratio between the two pipes. The thermo-chromic liquid crystal sheet showed that a cold spot was formed at the wall surface in the main pipe in the cases of the impinging jet and the wall jet. From the temperature measurement in the fluid, temperature fluctuation intensity was high along the edge of the jet exiting from branch piping. A database of temperature fluctuation and frequency characteristics was established for an evaluation rule of thermal striping in a T-pipe junction. (authors)

Minoru Igarashi; Masaaki Tanaka; Hideki Kamide [Japan Nuclear Cycle Development Institute 4002, Narita, O-arai, Ibaraki 311-1393 (Japan); Shigeyo Kawashima [Nuclear Energy System Incorporation (Japan)

2002-07-01T23:59:59.000Z

122

Geothermal energy utilization with heat pipes  

Science Journals Connector (OSTI)

Several variants of heat pipes for utilization of geothermal energy and underground rock heat are studied. An...

L. L. Vasil'ev

1990-09-01T23:59:59.000Z

123

Structural Assessment of Small Bore Feeder Piping  

E-Print Network [OSTI]

Frasheri MIE491 - Capstone Team 9 March 2012 Client: W. Reinhardt Industry Partner: Candu Energy Inc. Supervisor: A. N. Sinclair CASE ONE CANDU REACTORS HAVE 380+ SMALL BORE FEEDER PIPES. THE PIPES PIPES AND VALIDATE COMPUTATIONAL METHODS COMPARED TO FULL SCALE TESTS TO FAILURE. THE CLIENT CANDU

124

Running Dry at the Power Plant | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Running Dry at the Power Plant Running Dry at the Power Plant Running Dry at the Power Plant Securing sufficient supplies of fresh water for societal, industrial, and agricultural uses while protecting the natural environment is becoming increasingly difficult in many parts of the United States. Climate variability and change may exacerbate the situation through hotter weather and disrupted precipitation patterns that promote regional droughts. Achieving long- term water sustainability will require balancing competing needs effectively, managing water resources more holistically, and developing innovative approaches to water use and conserva- tion. Utility companies-which use substantial amounts of water for plant cooling and other needs-are doing their part by pursuing water-conserving

125

Running Interactive Jobs on Franklin  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Interactive Jobs Interactive Jobs Interactive Jobs Serial Code or Commands Franklin is a massively parallel high-performance computing platform and is intended and designed to run large parallel codes. While it is possible to run serial jobs on Franklin, it is discouraged. Any code or command that is not preceeded by the aprun command will execute serially on a service (usually login) node. The login nodes are for executing general UNIX shell commands, building code, and submitting jobs intended to run on the compute nodes. The service nodes are shared by many users, so. please do not run your compute- or memory-intensive jobs on these nodes. NERSC may kill running processes that severely degrade service node performance. If your job will run for more than 5 minutes, or use more than 1 GB of memory it should not

126

Queueing & Running Jobs | Argonne Leadership Computing Facility  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

System Overview Data Storage & File Systems Compiling & Linking Queueing & Running Jobs Reservations Cobalt Job Control How to Queue a Job Running Jobs FAQs Queuing and Running on...

127

Model Simulating Real Domestic Hot Water Use - Building America...  

Energy Savers [EERE]

Model Simulating Real Domestic Hot Water Use - Building America Top Innovation Model Simulating Real Domestic Hot Water Use - Building America Top Innovation Image of a pipe...

128

Radiological assessment of BWR recirculatory pipe replacement  

SciTech Connect (OSTI)

Replacement of primary recirculating coolant pipe in BWRs is a major effort that has been carried out at a number of nuclear generating stations. This report reviews the planned or actual pipe replacement projects at six sites: Nine Mile Point-1, Monticello, Cooper, Peach Bottom-2, Vermont Yankee, and Browns Ferry-1. It covers the radiological issues of the pipe replacement, measures taken to reduce doses to ALARA, estimated and actual occupational doses, and lessons learned during the various replacements. The basis for the decisions to replace the pipes, the methods used for preparation and decontamination, the removal of old pipe, and the installation of the new pipe are briefly described. Methods for reducing occupational radiation dose during pipe repairs/replacements are recommended. 32 refs., 12 figs., 17 tabs.

Parkhurst, M.A.; Hadlock, D.E.; Harty, R.; Pappin, J.L.

1986-02-01T23:59:59.000Z

129

Coordinating the 2009 RHIC Run  

ScienceCinema (OSTI)

Physicists working at the Brookhaven National Lab's Relativistic Heavy Ion Collider (RHIC) are exploring the puzzle of proton spin as they begin taking data during the 2009 RHIC run. For the first time, RHIC is running at a record energy of 500 giga-elect

Brookhaven Lab - Mei Bai

2010-01-08T23:59:59.000Z

130

Heat Pipe Impact on Dehumidification, Indoor Air Quality and Energy Savings  

E-Print Network [OSTI]

units hot water and space heating from flue-gas, fireplaces industrial process heat recycle utility boiler preheater aircraft wing deicing solar energy collectors warming carburetors & intakes geothermal energy recovery Sterling engines...HEAT PIPE IMPACT ON DEHUMIDIFICATION, INDOOR AIR QUALITY AND ENERGY SAVINGS by J. Thomas Cooper Heat Pipe Technology, Inc Alachua, Florida, USA TENTH SYMPOSIUM ON IMPROVING BUILDING SYSTEMS IN HOT AND HUMID CLIMATES MAY 13-14, 1996 FT...

Cooper, J. T.

1996-01-01T23:59:59.000Z

131

Challenges and Capabilities for Inspection of Cast Stainless Steel Piping  

SciTech Connect (OSTI)

Studies conducted at the Pacific Northwest National Laboratory (PNNL) in Richland, Washington, have focused on developing and evaluating the reliability of nondestructive examination (NDE) approaches for inspecting coarse-grained, cast stainless steel reactor components. The objective of this work is to provide information to the United States Nuclear Regulatory Commission (US NRC) on the utility, effectiveness and limitations of NDE techniques as related to the inservice inspection of primary system piping components in pressurized water reactors (PWRs). This paper describes results from recent assessments built upon early work with low frequency ultrasonic testing (UT) coupled with synthetic aperture focusing technique (SAFT) signal processing, and has subsequently evolved into an approach using low frequency phased array technology as applied from the outer diameter surface of the piping. In addition, eddy current examination as performed from the inner diameter surface of these piping welds is also reported. Cast stainless steel (CSS) pipe specimens were examined that contain thermal and mechanical fatigue cracks located close to the weld roots and have inside/outside surface geometrical conditions that simulate several PWR primary piping weldments and configurations. In addition, segments of vintage centrifugally cast piping were also examined to understand inherent acoustic noise and scattering due to grain structures and determine consistency of UT responses from different locations. The advanced UT methods were applied from the outside surface of these specimens using automated scanning devices and water coupling. The phased array approach was implemented with a modified instrument operating at low frequencies and composite volumetric images of the samples were generated with 500 kHz, 750 kHz, and 1.0 MHz arrays. Eddy current studies were conducted on the inner diameter surface of these piping welds using a commercially available instrument and a cross point probe design operating at a frequency of 250 kHz. Results from the laboratory studies indicate that 500 kHz phased array methods are capable of detecting flaws greater than 30% through-wall in the cast specimens. Length-sizing of flaws is possible, but no diffracted signals could be observed to support time-of-flight depth sizing. The work with eddy current examinations on the inner diameter surface indicate that, while certain cast austenitic microstructures provide excessive background noise due to permeability variations, surface-breaking flaws are quite easily detected. This work was sponsored by the U.S. Nuclear Regulatory Commission under Contract DE-AC06-76RLO 1830; NRC JCN Y6604; Mr. Wallace Norris, NRC Project Monitor.

Anderson, Michael T.; Crawford, Susan L.; Cumblidge, Stephen E.; Diaz, Aaron A.; Doctor, Steven R.

2007-12-31T23:59:59.000Z

132

BOA: Asbestos pipe insulation removal robot system. Phase 1  

SciTech Connect (OSTI)

The project described in this report targets the development of a mechanized system for safe, cost-efficient and automated abatement of asbestos containing materials used as pipe insulation. Based on several key design criteria and site visits, a proof-of-concept prototype robot system, dubbed BOA, was designed and built, which automatically strips the lagging and insulation from the pipes, and encapsulates them under complete vacuum operation. The system can operate on straight runs of piping in horizontal or vertical orientations. Currently we are limited to four-inch diameter piping without obstacles as well as a somewhat laborious emplacement and removal procedure -- restrictions to be alleviated through continued development. BOA removed asbestos at a rate of 4-5 ft./h compared to 3 ft./h for manual removal of asbestos with a 3-person crew. The containment and vacuum system on BOA was able to achieve the regulatory requirement for airborne fiber emissions of 0.01 fibers/ccm/ 8-hr. shift. This program consists of two phases. The first phase was completed and a demonstration was given to a review panel, consisting of DOE headquarters and site representatives as well as commercial abatement industry representatives. Based on the technical and programmatic recommendations drafted, presented and discussed during the review meeting, a new plan for the Phase II effort of this project was developed. Phase 11 will consist of a 26-month effort, with an up-front 4-month site-, market-, cost/benefit and regulatory study before the next BOA robot (14 months) is built, and then deployed and demonstrated (3 months) at a DOE site (such as Fernald or Oak Ridge) by the beginning of FY`97.

Schempf, H.; Bares, J.E.

1995-02-01T23:59:59.000Z

133

Dual manifold heat pipe evaporator  

DOE Patents [OSTI]

An improved evaporator section for a dual manifold heat pipe. Both the upper and lower manifolds can have surfaces exposed to the heat source which evaporate the working fluid. The tubes in the tube bank between the manifolds have openings in their lower extensions into the lower manifold to provide for the transport of evaporated working fluid from the lower manifold into the tubes and from there on into the upper manifold and on to the condenser portion of the heat pipe. A wick structure lining the inner walls of the evaporator tubes extends into both the upper and lower manifolds. At least some of the tubes also have overflow tubes contained within them to carry condensed working fluid from the upper manifold to pass to the lower without spilling down the inside walls of the tubes.

Adkins, Douglas R. (Albuquerque, NM); Rawlinson, K. Scott (Albuquerque, NM)

1994-01-01T23:59:59.000Z

134

Dual manifold heat pipe evaporator  

DOE Patents [OSTI]

An improved evaporator section is described for a dual manifold heat pipe. Both the upper and lower manifolds can have surfaces exposed to the heat source which evaporate the working fluid. The tubes in the tube bank between the manifolds have openings in their lower extensions into the lower manifold to provide for the transport of evaporated working fluid from the lower manifold into the tubes and from there on into the upper manifold and on to the condenser portion of the heat pipe. A wick structure lining the inner walls of the evaporator tubes extends into both the upper and lower manifolds. At least some of the tubes also have overflow tubes contained within them to carry condensed working fluid from the upper manifold to pass to the lower without spilling down the inside walls of the tubes. 1 figure.

Adkins, D.R.; Rawlinson, K.S.

1994-01-04T23:59:59.000Z

135

Building America Top Innovations Hall of Fame Profile … Model Simulating Real Domestic Hot Water Use  

Broader source: Energy.gov (indexed) [DOE]

and the Davis Energy Group used the and the Davis Energy Group used the Domestic Hot Water Event Schedule Generator to accurately quantify effects of low and high water usage on distribution system measures such as pipe insulation, home run plumbing, and demand-controlled recirculation loops. As progress continues with high-R, tightly sealed thermal enclosures, domestic hot water becomes an increasingly important energy use in high-performance homes. Building America research has improved our ability to model hot water use so new hot water technologies can be more accurately assessed and more readily integrated into high-performance homes. Energy savings for certain residential building technologies depend greatly on occupant behavior. Domestic hot water use is a good example. Simulating

136

Water-soluble garlic constituents inhibit breast cancer growth in vitro and in vivo  

Science Journals Connector (OSTI)

...Toxicant Yields to Blood-Level Exposure in Water Pipe Tobacco Smokers Alan L. Shihadeh...global increase in tobacco smoking with a water pipe (hookah, narghile, or shisha...carcinogens and other toxicants present in water pipe smoke. To do so, the toxicant yield...

Leslie Gapter; Lawrence Ng; Gowsala Sivam; Howard Hosick

2007-05-01T23:59:59.000Z

137

Can the cosmological "constant" run? - It may run  

E-Print Network [OSTI]

Using standard quantum field theory, we discuss several theoretical aspects of the possible running of the cosmological constant (CC) term in Einstein's equations. The basic motivation for the present work is to emphasize that this possibility should also be taken into account when considering dynamical models for the dark energy (DE), which are nowadays mainly focused on identifying the DE with the energy density associated to one or more ad hoc scalar fields. At the same time, we address some recent criticisms that have been published (or privately communicated to us) attempting to cast doubts on the fundamental possibility of such running. In this work, we argue that while there is no comprehensive proof of the CC running, there is no rigorous proof of the non-running either. In particular, some purported "non-running theorem" recently adduced in the literature is, in our opinion, completely insubstantial and formally incorrect. The way to the CC running is, therefore, still open and we take here the opportunity to present a pedagogical review of the present state of the art in this field, including a a brief historical account.

Ilya L. Shapiro; Joan Sola

2008-10-04T23:59:59.000Z

138

Heat-pipe gas-combustion system endurance test for Stirling engine. Final report, May 1990-September 1990  

SciTech Connect (OSTI)

Stirling Thermal Motors, Inc., (STM) has been developing a general purpose Heat Pipe Gas Combustion System (HPGC) suitable for use with the STM4-120 Stirling engine. The HPGC consists of a parallel plate recuperative preheater, a finned heat pipe evaporator and a film cooled gas combustor. A principal component of the HPGC is the heat pipe evaporator which collects and distributes the liquid sodium over the heat transfer surfaces. The liquid sodium evaporates and flows to the condensers where it delivers its latent heat. The report presents test results of endurance tests run on a Gas-Fired Stirling Engine (GFSE). Tests on a dynamometer test stand yielded 67 hours of engine operation at power levels over 10 kW (13.5 hp) with 26 hours at power levels above 15 kW (20 hp). Total testing of the engine, including both motoring tests and engine operation, yielded 245 hours of engine run time.

Mahrle, P.

1990-12-01T23:59:59.000Z

139

Hot clamp design for LMFBR piping systems  

SciTech Connect (OSTI)

Thin-wall, large-diameter piping for liquid metal fast breeder reactor (LMFBR) plants can be subjected to significant thermal transients during reactor scrams. To reduce local thermal stresses, an insulated cold clamp was designed for the fast flux test facility and was also applied to some prototype reactors thereafter. However, the cost minimization of LMFBR requires much simpler designs. This paper presents a hot clamp design concept, which uses standard clamp halves directly attached to the pipe surface leaving an initial gap. Combinations of flexible pipe and rigid clamp achieved a self-control effect on clamp-induced pipe stresses due to the initial gap. A 3-D contact and inelastic history analysis were performed to verify the hot clamp concept. Considerations to reduce the initial stress at installation, to mitigate the clamp restraint on the pipe expansion during thermal shocks, and to maintain the pipe-clamp stiffness desired during a seismic event were discussed.

Kobayashi, T.; Tateishi, M. (Nippon MARC Co., Ltd., Tokyo (Japan))

1993-02-01T23:59:59.000Z

140

Piping inspection carriage having axially displaceable sensor  

DOE Patents [OSTI]

A pipe inspection instrument carriage for use with a pipe crawler for performing internal inspections of piping surfaces. The carriage has a front leg assembly, a rear leg assembly and a central support connecting the two assemblies and for mounting an instrument arm having inspection instruments. The instrument arm has a y-arm mounted distally thereon for axially aligning the inspection instrumentation and a mounting block, a linear actuator and axial movement arm for extending the inspection instruments radially outward to operably position the inspection instruments on the piping interior. Also, the carriage has a rotation motor and gear assembly for rotating the central support and the front leg assembly with respect to the rear leg assembly so that the inspection instruments azimuthally scan the piping interior. The instrument carriage allows performance of all piping inspection operations with a minimum of moving parts, thus decreasing the likelihood of performance failure.

Zollinger, William T. (Martinez, GA); Treanor, Richard C. (Augusta, GA)

1994-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Downhole pipe selection for acoustic telemetry  

DOE Patents [OSTI]

A system is described for transmitting signals along a downhole string including a plurality of serially connected tubular pipes such as drill or production pipes, a transmitter for transmitting a signal along the string and a receiver for receiving the signal placed along the string at a location spaced from said transmitting means, wherein the pipes between the transmitter and the receiver are ordered according to length of tube to minimize loss of signal from said transmitter to said receiver. 7 figs.

Drumheller, D.S.

1995-12-19T23:59:59.000Z

142

Refrigerator and Solenoid Run Summary August/September 1999  

SciTech Connect (OSTI)

The helium refrigerator was cooled down and operated for the third time since its installation. D-Zero's 2 Tesla superconducting solenoid was cooled down and operated for its second time since its installation into the D-Zero detector. This engineering note summarizes the cryogenic aspects of the test run and performance measurements made. The main purpose of this run was to do field mapping of the solenoid with different combinations of field polarity on the Solenoid and CF iron magnets. This was accomplished. A second purpose was to test the lower field joint repair that was done in January 1999. This field joint had a measurable voltage drop across the soldered bus splice. The repair was an undoing of the joint, extensive cleaning of the bus, and then welding the splice. The repair was successful, no voltage drop was measured and the magnet behaved nicely. A parasitic purpose was to get some operating time on the refrigerator, measure the refrigeration performance, and measure the heat leak in the VLPC lines mounted on the detector platform. Refrigerator performance was spot checked, and was found to be 60 watts (10%) less than generic operating curves. At this level of performance, the operating margin for the full solenoid and VLPC system will be 75 watts (15%) which is somewhat uncomfortable from an operational stand point. The VLPC lines were operated and heat leak numbers of around 40 watts was measured for each pipe section including the supply u-tubes to the detector, the bayonet can, valve box on the platform and the piping back to the refrigerator valve box. Another purpose of the test run was to test the compatibility of other detector components with the new central magnetic field environment. I do not know the results of these tests.

Rucinski, R.; /Fermilab

1999-09-20T23:59:59.000Z

143

Stress analysis of piping elbows  

SciTech Connect (OSTI)

The problem undertaken in this paper is the investigation of the stresses generated in circular piping elbows of variable thickness, under the influence of uniform internal pressure. It is observed now that the material region and the imposed loading conform to the same axial symmetry. This fact strongly suggests the employment of toroidal coordinates and the Boussinesq-Papkovitch-Neuber (BPN) potential function approach towards obtaining the solution to the above posed problem. The results obtained by this BPN approach are compared with the numerical solution generated by a boundary integral equation approach. The comparison yields a good agreement.

Choi, J.; Rentzepis, G.M. [Georgia Inst. of Tech., Atlanta, GA (United States). George W. Woodruff School of Mechanical Engineering

1996-12-31T23:59:59.000Z

144

Asymptotic scaling in turbulent pipe flow  

Science Journals Connector (OSTI)

...obtained in industrial piping such as a transcontinental natural gas pipelines. D is the pipe diameter and is the volume-averaged...Marati, N , C.M Casciola, and R Piva2004Energy cascade and spatial fluxes in wall turbulence. J. Fluid Mech...

2007-01-01T23:59:59.000Z

145

Heat pipe with embedded wick structure  

DOE Patents [OSTI]

A heat pipe has an embedded wick structure that maximizes capillary pumping capability. Heat from attached devices such as integrated circuits evaporates working fluid in the heat pipe. The vapor cools and condenses on a heat dissipation surface. The condensate collects in the wick structure, where capillary pumping returns the fluid to high heat areas. 7 figs.

Adkins, D.R.; Shen, D.S.; Tuck, M.R.; Palmer, D.W.; Grafe, V.G.

1998-06-23T23:59:59.000Z

146

Running Interactive Jobs on Carver  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Interactive Jobs Interactive Jobs Interactive Jobs Overview There are two types of interactive jobs. The first type runs on a login node. These applications are typically pre- and post-processing jobs, data management programs, or some other type of "tool". Note that it is not possible to run any MPI application on Carver login nodes. The second type of interactive job runs on one or more Carver compute nodes. Because the only way to gain access to the compute nodes is through the batch system, these types of jobs may more accurately be called "interactive batch" jobs. The remainder of this section focuses on these types of jobs. Usage Basic usage: carver% qsub -I The above command creates an interactive shell on a compute node, in the user's home directory. As a batch job, it has default values for batch

147

Running Jobs Overview for Edison  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Overview Overview Overview Overview and Basic Description Jobs on Edison execute on one or more "compute" nodes dedicated to that job. These nodes are distinct from the shared "login" nodes that host interactive sessions and the shared "MOM" nodes that execute commands from a "batch script" that controls how the job runs. Typically, users write the batch script with a text editor and submit it to the system using the "qsub" command. The batch script contains a number of job control directives and also the "aprun" command that actually runs the program in parallel on the compute nodes. It is possible to run small, short parallel jobs interactively as described in the pages in this section. Pages in this section explain the process in more detail.

148

Tevatron Run II Physics Projections  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Run II Physics Projections (Spring 2006) Run II Physics Projections (Spring 2006) Document for the P5 Committee (version 8, September 30, 2005) Electroweak Precision Measurements and Standard Model Higgs Searches W Mass Measurement: 20 - 30 MeV Projections versus Integrated Luminosity (made by CDF): eps, gif, gif (log) Extrapolated from Run Ib measurement Uncertainties assumed to scale with luminosity: Statiscal uncertainties Systematic uncertainties such as Energy and momentum scale, Hadron Recoil against W Uncertainties assumed not to scale with luminosity: W production and decay: PDFs, d(sigma_W)/d(Pt), higher order QCD/QED effects Assumed to be beween 20 MeV (dashed lines) and 30 MeV (solid lines) Top Mass Measurement: ~1.5 GeV Assumptions Channel: only lepton+jets channle considered. Uncertainties that scale with luminosity - 1 / sqrt(lum)

149

Stability analysis of pipe racks for industrial facilities.  

E-Print Network [OSTI]

??Pipe rack structures are used extensively throughout industrial facilities worldwide. While stability analysis is required in pipe rack design per the AISC Specification for Structural (more)

Nelson, David Aaron

2012-01-01T23:59:59.000Z

150

Effect of nanofluids on thermal performance of heat pipes.  

E-Print Network [OSTI]

?? A relatively new way for utilizing the thermal performance of heat pipes is to use nanofluids as working fluids in the heat pipes. Heat (more)

Ferizaj, Drilon

2014-01-01T23:59:59.000Z

151

Hydrogen Piping Experience in Chevron Refining  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Piping Piping Experience in Chevron Refining Ned Niccolls Materials Engineer Chevron Energy Technology Company Hydrogen Pipeline Working Group Workshop August 30-31, 2005 Outline 2 Overall perspectives from long term use of hydrogen piping in refining. Piping specifications and practices. The (few) problem areas. Related industry work: American Petroleum Institute corrosion and materials work on high temperature hydrogen attack. Overall Perspectives 3 Few problems with hydrogen piping operating at ambient to at least 800F and pressures up to at least 3000psia as long as we stay within well- defined limits H2S contamination presents many more problems, beyond the scope of this talk We will note a couple of specific vulnerabilities Refining tracks materials performance in

152

Pipe supports and anchors - LMFBR applications  

SciTech Connect (OSTI)

Pipe design and support design can not be treated as separate disciplines. A coordinated design approach is required if LMFBR pipe system adequacy is to be achieved at a reasonable cost. It is particularly important that system designers understand and consider those factors which influence support train flexibility and thus the pipe system dynamic stress levels. The system approach must not stop with the design phase but should continue thru the erection and acceptance test procedures. The factors that should be considered in the design of LMFBR pipe supports and anchors are described. The various pipe support train elements are described together with guidance on analysis, design and application aspects. Post erection acceptance and verification test procedures are then discussed.

Anderson, M.J.

1983-06-01T23:59:59.000Z

153

Ultrasonic guided waves in eccentric annular pipes  

SciTech Connect (OSTI)

This paper studies the feasibility of using ultrasonic guided waves to rapidly inspect tubes and pipes for possible eccentricity. While guided waves are well established in the long range inspection of structures such as pipes and plates, studies for more complex cross sections are limited and analytical solutions are often difficult to obtain. Recent developments have made the Semi Analytical Finite Element (SAFE) method widely accessible for researchers to study guided wave properties in complex structures. Here the SAFE method is used to study the effect of eccentricity on the modal structures and velocities of lower order guided wave modes in thin pipes of diameters typically of interest to the industry. Results are validated using experiments. The paper demonstrates that even a small eccentricity in the pipe can strongly affect guided wave mode structures and velocities and hence shows potential for pipe eccentricity inspection.

Pattanayak, Roson Kumar; Balasubramaniam, Krishnan; Rajagopal, Prabhu [Centre for NDE, Indian Institute of Technology - Madras Chennai 600036, T. N. (India)

2014-02-18T23:59:59.000Z

154

Data hiding using run length matching  

Science Journals Connector (OSTI)

This paper proposes two data hiding methods based on run length matching encoding. All of the proposed methods use the location of accumulated run length values where it compares the run length of the cover data with that of the secret data. The run length matching (RLM) method uses the run length table, which is constructed from the cover data and secret data. The reduced run length matching (RRLM) method calculates the difference value before making the run length encoding table. The experimental results demonstrate that RLM and RRLM have their own strengths with respect to different types of data and run length encoding value matching.

Ki-Hyun Jung; Kee-Young Yoo

2009-01-01T23:59:59.000Z

155

An investigation of evaluation methods for internal FBE pipe coatings  

SciTech Connect (OSTI)

The corrosivity of CO{sub 2}-containing water used for injection into formations is very high. One of the means for mitigating this corrosion is through the use of internal Fusion Bonded Epoxy (FBE) pipe coatings. However, these are very demanding services for coatings. Pressures and temperatures are high enough in some cases to severely stress the coating. Most FBE coatings are permeated by CO{sub 2}, and when pressures are released, blistering of the coating may occur. This compromises the integrity of the coating which may result in premature failure of the coating followed by corrosion of the pipe metal. The identification of coatings with good performance is absolutely essential. The failure of the coating alone can result in great losses due to the initial cost of the coating application, plus potential operating problems. When corrosive penetrations of the pipe occur, the costs escalate even higher as a result of required maintenance and down time. This paper describes the test work conducted to determine how to evaluate coatings for such services, and to determine which coatings will give successful, long-term performance. Test methods contained in an industry standard have been validated, and suitable coatings identified. Future test work needed to add to these findings has also been recommended. Although this work was designed for CO{sub 2} services, it does give valuable insight into tests that are required to properly qualify FBE coatings for non-CO{sub 2} services.

Thompson, S.P. [Thompson (Stanley P.), Paris, TX (United States); Varughese, K. [Al-Qahtani Pipe Coating Terminal, Dammam (Saudi Arabia)

1994-12-31T23:59:59.000Z

156

ADEPT. aerosol deposition in cylindrical pipes  

SciTech Connect (OSTI)

ADEPT calculates the deposition of aerosols in straight cylindrical pipes during turbulent air flow. Aerosol deposition is calculated in a time-dependent manner based on empirical correlations for turbulent flow in pipes. The calculated deposition during a single time interval is cumulative with that of previous time intervals and results in a decreasing inner diameter of the pipe. The calculated deposition is assumed uniform over the length of the pipe. The entering aerosol distribution is specified by the user in the form of a log-normal distribution of accumulated mass versus particle size and may be time dependent. Entering flow conditions are also specified by the user and may also be time dependent. For simplicity and generality, the geometry implicit in the program is that of a cylindrical pipe with no bends or fittings. The flow is turbulent and monodirectional; only one set of inlet conditions may be applied at a given time. The flow parameters are not calculated along the length of pipe; therefore, the dynamic behavior of the aerosol within the pipe as well as the effects of reentrainment cannot be determined explicitly. A typical problem requires 2 minutes of CPU time.

Fazekas, P.; Tewarson, S.C (Burns and Roe, Oradell, NJ (United States))

1985-01-01T23:59:59.000Z

157

ADEPT. Aerosol Deposition in Cylindrical Pipes  

SciTech Connect (OSTI)

ADEPT calculates the deposition of aerosols in straight cylindrical pipes during turbulent air flow. Aerosol deposition is calculated in a time-dependent manner based on empirical correlations for turbulent flow in pipes. The calculated deposition during a single time interval is cumulative with that of previous time intervals and results in a decreasing inner diameter of the pipe. The calculated deposition is assumed uniform over the length of the pipe. The entering aerosol distribution is specified by the user in the form of a log-normal distribution of accumulated mass versus particle size and may be time dependent. Entering flow conditions are also specified by the user and may also be time dependent. For simplicity and generality, the geometry implicit in the program is that of a cylindrical pipe with no bends or fittings. The flow is turbulent and monodirectional; only one set of inlet conditions may be applied at a given time. The flow parameters are not calculated along the length of pipe; therefore, the dynamic behavior of the aerosol within the pipe as well as the effects of reentrainment cannot be determined explicitly. A typical problem requires 2 minutes of CPU time.

Fazekas, P.; Tewarson, S.C [Burns and Roe, Oradell, NJ (United States)

1985-01-01T23:59:59.000Z

158

Development of Next Generation Multiphase Pipe Flow Prediction Tools  

SciTech Connect (OSTI)

The developments of fields in deep waters (5000 ft and more) is a common occurrence. It is inevitable that production systems will operate under multiphase flow conditions (simultaneous flow of gas-oil-and water possibly along with sand, hydrates, and waxes). Multiphase flow prediction tools are essential for every phase of the hydrocarbon recovery from design to operation. The recovery from deep-waters poses special challenges and requires accurate multiphase flow predictive tools for several applications including the design and diagnostics of the production systems, separation of phases in horizontal wells, and multiphase separation (topside, seabed or bottom-hole). It is very crucial to any multiphase separation technique that is employed either at topside, seabed or bottom-hole to know inlet conditions such as the flow rates, flow patterns, and volume fractions of gas, oil and water coming into the separation devices. The overall objective was to develop a unified model for gas-oil-water three-phase flow in wells, flow lines, and pipelines to predict the flow characteristics such as flow patterns, phase distributions, and pressure gradient encountered during petroleum production at different flow conditions (pipe diameter and inclination, fluid properties and flow rates). The project was conducted in two periods. In Period 1 (four years), gas-oil-water flow in pipes were investigated to understand the fundamental physical mechanisms describing the interaction between the gas-oil-water phases under flowing conditions, and a unified model was developed utilizing a novel modeling approach. A gas-oil-water pipe flow database including field and laboratory data was formed in Period 2 (one year). The database was utilized in model performance demonstration. Period 1 primarily consisted of the development of a unified model and software to predict the gas-oil-water flow, and experimental studies of the gas-oil-water project, including flow behavior description and closure relation development for different flow conditions. Modeling studies were performed in two parts, Technology Assessment and Model Development and Enhancement. The results of the Technology assessment study indicated that the performance of the current state of the art two-phase flow models was poor especially for three-phase pipeline flow when compared with the existing data. As part of the model development and enhancement study, a new unified model for gas-oil-water three-phase pipe flow was developed. The new model is based on the dynamics of slug flow, which shares transition boundaries with all the other flow patterns. The equations of slug flow are used not only to calculate the slug characteristics, but also to predict transitions from slug flow to other flow patterns. An experimental program including three-phase gas-oil-water horizontal flow and two-phase horizontal and inclined oil-water flow testing was conducted utilizing a Tulsa University Fluid Flow Projects Three-phase Flow Facility. The experimental results were incorporated into the unified model as they became available, and model results were used to better focus and tailor the experimental study. Finally, during the Period 2, a new three-phase databank has been developed using the data generated during this project and additional data available in the literature. The unified model to predict the gas-oil-water three phase flow characteristics was tested by comparing the prediction results with the data. The results showed good agreements.

Tulsa Fluid Flow

2008-08-31T23:59:59.000Z

159

Evaluation of temporary non-code repairs in safety class 3 piping systems  

SciTech Connect (OSTI)

Temporary non-ASME Code repairs in safety class 3 pipe and piping components are permissible during plant operation in accordance with Nuclear Regulatory Commission Generic Letter 90-05. However, regulatory acceptance of such repairs requires the licensee to undertake several timely actions. Consistent with the requirements of GL 90-05, this paper presents an overview of the detailed evaluation and relief request process. The technical criteria encompasses both ductile and brittle piping materials. It also lists appropriate evaluation methods that a utility engineer can select to perform a structural integrity assessment for design basis loading conditions to support the use of temporary non-Code repair for degraded piping components. Most use of temporary non-code repairs at a nuclear generating station is in the service water system which is an essential safety related system providing the ultimate heat sink for various plant systems. Depending on the plant siting, the service water system may use fresh water or salt water as the cooling medium. Various degradation mechanisms including general corrosion, erosion/corrosion, pitting, microbiological corrosion, galvanic corrosion, under-deposit corrosion or a combination thereof continually challenge the pressure boundary structural integrity. A good source for description of corrosion degradation in cooling water systems is provided in a cited reference.

Godha, P.C.; Kupinski, M.; Azevedo, N.F. [Northeast Utilities System, Hartford, CT (United States)

1996-12-01T23:59:59.000Z

160

Development of a Remote External Repair Tool for Damaged or Defective Polyethylene Pipe  

SciTech Connect (OSTI)

Current procedures for repairing polyethylene (PE) gas pipe require excavation, isolation, and removal of the damaged section of pipe followed by fusing a new section of pipe into place. These techniques are costly and very disruptive. An alternative repair method was developed at Timberline Tool with support from Oregon State University (OSU) and funding by the U. S. Department of Energy National Energy Technology Laboratory (DOE/NETL). This project was undertaken to design, develop and test a tool and method for repairing damaged PE pipe remotely and externally in situ without squeezing off the flow of gas, eliminating the need for large-scale excavations. Through an iterative design and development approach, a final engineered prototype was developed that utilizes a unique thermo-chemical and mechanical process to apply a permanent external patch to repair small nicks, gouges and punctures under line pressure. The project identified several technical challenges during the design and development process. The repair tool must be capable of being installed under live conditions and operate in an 18-inch keyhole. This would eliminate the need for extensive excavations thus reducing the cost of the repair. Initially, the tool must be able to control the leak by encapsulating the pipe and apply slight pressure at the site of damage. Finally, the repair method must be permanent at typical operating pressures. The overall results of the project have established a permanent external repair method for use on damaged PE gas pipe in a safe and cost-effective manner. The engineered prototype was subjected to comprehensive testing and evaluation to validate the performance. Using the new repair tool, samples of 4-inch PE pipe with simulated damage were successfully repaired under line pressure to the satisfaction of DOE/NETL and the following natural gas companies: Northwest Natural; Sempra Energy, Southwest Gas Corporation, Questar, and Nicor. However, initial results of accelerated age testing on repaired pipe samples showed that the high density polyethylene (HDPE) pipe patch material developed a small crack at the high stress areas surrounding the patched hole within the first 48 hours of hot water testing, indicating that the patch material has a 25-year lifespan. Based on these results, further research is continuing to develop a stronger repair patch for a satisfactory 50-year patch system. Additional tests were also conducted to evaluate whether any of the critical performance properties of the PE pipe were reduced or compromised by the repair technique. This testing validated a satisfactory 50-year patch system for the pipe.

Kenneth H. Green; Willie E. Rochefort; Nick Wannenmacher; John A. Clark; Kevin Harris

2006-06-30T23:59:59.000Z

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Pipe crawlers: Versatile adaptations for real applications  

SciTech Connect (OSTI)

A problem at the Savannah River Site requires the unique application of a pipe crawler. A number of stainless steel pipes buried in concrete require ultrasonic inspection of the heat affected zones of the welds for detection of flaws or cracks. The paper describes the utilization of an inch-worm motion pipe crawler which negotiates a 90 degree reducing elbow with significant changes in diameter and vertical sections before entering the area of concern. After a discussion of general considerations and problem description, special requirements to meet the objectives and the design approach regarding the tractor, control system, instrument carriage, and radiation protection are discussed. 2 refs., 11 figs. (MB)

Hapstack, M.; Talarek, T.R.

1990-01-01T23:59:59.000Z

162

Better Buildings Neighborhood Program: Run a Program  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Run a Program Run a Program Printable Version Share this resource Send a link to Better Buildings Neighborhood Program: Run a Program to someone by E-mail Share Better Buildings Neighborhood Program: Run a Program on Facebook Tweet about Better Buildings Neighborhood Program: Run a Program on Twitter Bookmark Better Buildings Neighborhood Program: Run a Program on Google Bookmark Better Buildings Neighborhood Program: Run a Program on Delicious Rank Better Buildings Neighborhood Program: Run a Program on Digg Find More places to share Better Buildings Neighborhood Program: Run a Program on AddThis.com... Getting Started Driving Demand Financing Workforce Development Run a Program Energy efficiency upgrade programs provide communities with many benefits. In addition to helping homeowners, businesses, and institutions save money

163

A kinetic scheme for pressurized flows in non uniform pipes  

E-Print Network [OSTI]

The aim of this paper is to present a kinetic numerical scheme for the computations of transient pressurised flows in closed water pipes with variable sections. Firstly, we detail the derivation of the mathematical model in curvilinear coordinates under some hypothesis and we performe a formal asymptotic analysis. Then the obtained system is written as a conservative hyperbolic partial differential system of equations, and we recall how to obtain the corresponding kinetic formulation based on an upwinding of the source term due to the "pseudo topography" performed in a close manner described by Perthame and al.

Bourdarias, Christian; Gerbi, Stphane

2008-01-01T23:59:59.000Z

164

Dry Pipe Sprinkler Piping Replacement Project (4588), 4/30/2012  

Broader source: Energy.gov (indexed) [DOE]

Pipe System Sprinkler Piping Replacement Projects (4588) Pipe System Sprinkler Piping Replacement Projects (4588) Program or Field Office: Y-12 Site Office Location(s) (City/County/State): Oak Ridge, Anderson County, Tennessee Proposed Action Description: Submit by E-mail The proposed action is to replace sections of dry pipe system sprinkler piping which include heads, hangers, fittings, and valves. Categorical Exclusion(s) Applied: 81.3- Routine maintenance For the complete DOE National Environmental Policy Act regulations regarding categorical exclusions, including the full text of each categorical exclusion, see Subpart D of I 0 CFR Part I 021. Regulatory Requirements in 10 CFR 1021.410(b): (See full text in regulation) [{Jrhe proposal fits within a class of actions that is listed in Appendix A orB to 10 CFR Part 1021, Subpart D.

165

Running Jobs Overview for Edison  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Overview Overview Overview Overview and Basic Description Jobs on Edison execute on one or more "compute" nodes dedicated to that job. These nodes are distinct from the shared "login" nodes that host interactive sessions and the shared "MOM" nodes that execute commands from a "batch script" that controls how the job runs. Typically, users write the batch script with a text editor and submit it to the system using the "qsub" command. The batch script contains a number of job control directives and also the "aprun" command that actually launches the program on to the compute nodes. It is possible to run small, short parallel jobs interactively as described in the pages in this section. Pages in this section explain the process in more detail.

166

Heat pipe based passive emergency core cooling system for safe shutdown of nuclear power reactor  

Science Journals Connector (OSTI)

Abstract On March 11th, 2011, a natural disaster created by earthquakes and Tsunami caused a serious potential of nuclear reactor meltdown in Fukushima due to the failure of Emergency Core Cooling System (ECCS) powered by diesel generators. In this paper, heat pipe based ECCS has been proposed for nuclear power plants. The designed loop type heat pipe ECCS is composed of cylindrical evaporator with 62 vertical tubes, each 150mm diameter and 6m length, mounted around the circumference of nuclear fuel assembly and 21mנ10mנ5m naturally cooled finned condenser installed outside the primary containment. Heat pipe with overall thermal resistance of 1.44נ10?5C/W will be able to reduce reactor temperature from initial working temperature of 282C to below 250C within 7h. The overall ECCS also includes feed water flooding of the core using elevated water tank for initial 10min which will accelerate cooling of the core, replenish core coolant during loss of coolant accident and avoids heat transfer crisis phenomena during heat pipe start-up process. The proposed heat pipe system will operate in fully passive mode with high runtime reliability and therefore provide safer environment to nuclear power plants.

Masataka Mochizuki; Randeep Singh; Thang Nguyen; Tien Nguyen

2014-01-01T23:59:59.000Z

167

GASIFICATION TEST RUN TC06  

SciTech Connect (OSTI)

This report discusses test campaign TC06 of the Kellogg Brown & Root, Inc. (KBR) Transport Reactor train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Reactor is an advanced circulating fluidized-bed reactor designed to operate as either a combustor or a gasifier using a particulate control device (PCD). The Transport Reactor was operated as a pressurized gasifier during TC06. Test run TC06 was started on July 4, 2001, and completed on September 24, 2001, with an interruption in service between July 25, 2001, and August 19, 2001, due to a filter element failure in the PCD caused by abnormal operating conditions while tuning the main air compressor. The reactor temperature was varied between 1,725 and 1,825 F at pressures from 190 to 230 psig. In TC06, 1,214 hours of solid circulation and 1,025 hours of coal feed were attained with 797 hours of coal feed after the filter element failure. Both reactor and PCD operations were stable during the test run with a stable baseline pressure drop. Due to its length and stability, the TC06 test run provided valuable data necessary to analyze long-term reactor operations and to identify necessary modifications to improve equipment and process performance as well as progressing the goal of many thousands of hours of filter element exposure.

Southern Company Services, Inc.

2003-08-01T23:59:59.000Z

168

Stress-corrosion cracking in BWR and PWR piping  

SciTech Connect (OSTI)

Intergranular stress-corrosion cracking of weld-sensitized wrought stainless steel piping has been an increasingly ubiquitous and expensive problem in boiling-water reactors over the last decade. In recent months, numerous cracks have been found, even in large-diameter lines. A number of potential remedies have been developed. These are directed at providing more resistant materials, reducing weld-induced stresses, or improving the water chemistry. The potential remedies are discussed, along with the capabilities of ultrasonic testing to find and size the cracks and related safety issues. The problem has been much less severe to date in pressurized-water reactors, reflecting the use of different materials and much lower coolant oxygen levels.

Weeks, R.W.

1983-07-01T23:59:59.000Z

169

Dehumidifying Heat Pipes | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Dehumidifying Heat Pipes Dehumidifying Heat Pipes Dehumidifying Heat Pipes June 24, 2012 - 4:32pm Addthis In order to make a room comfortable in hot, humid climates, an air conditioner must lower the indoor humidity level as well as the air temperature. If an air conditioner fails to lower the humidity adequately, the air will be cool, but will feel uncomfortably damp. Inappropriately sized air conditioners are prone to this problem; large units quickly cool the air, but cycle off before they can properly dehumidify it. In extremely humid climates, even correctly sized air conditioning equipment could fail to maintain a home at a comfortable humidity level. One technology that addresses this problem is the dehumidifying heat pipe, a device that enables an air conditioner to dehumidify better and still

170

Hydraulic fracturing slurry transport in horizontal pipes  

SciTech Connect (OSTI)

Horizontal-well activity has increased throughout the industry in the past few years. To design a successful hydraulic fracturing treatment for horizontal wells, accurate information on the transport properties of slurry in horizontal pipe is required. Limited information exists that can be used to estimate critical deposition and resuspension velocities when proppants are transported in horizontal wells with non-Newtonian fracturing gels. This paper presents a study of transport properties of various hydraulic fracturing slurries in horizontal pipes. Flow data are gathered in three transparent horizontal pipes with different diameters. Linear and crosslinked fracturing gels were studied, and the effects of variables--e.g., pipe size; polymer-gelling-agent concentration; fluid rheological properties; crosslinking effects; proppant size, density, and concentrations; fluid density; and slurry pump rate--on critical deposition and resuspension velocities were investigated. Also, equations to estimate the critical deposition and resuspension velocities of fracturing gels are provided.

Shah, S.N.; Lord, D.L. (Halliburton Services (US))

1990-09-01T23:59:59.000Z

171

Hydrogen Piping Experience in Chevron Refining  

Broader source: Energy.gov [DOE]

Overall Perspectives: Few problems with hydrogen piping operating at ambient to at least 800F and pressures up to at least 3000psia as long as we stay within well-defined limits

172

Fabric composite heat pipe technology development  

SciTech Connect (OSTI)

Testing has been performed on a variety of fabric composite technology feasibility issues. These include an evaluation of the effective radiation heat transfer rate from a heated metallic surface covered by a ceramic fabric with the intent of determining the effective emissivity'' of the combination of materials, studies of the wicking properties of ceramic fabrics, and the construction of fabric composite heat pipes to test their working properties under both steady state and transient conditions. Results of these experiments shown that fabric composite combinations have greatly enhanced effective emissivities'' resulting from the increases surface area of the fabric, ceramic fabrics can work very well as the wick for heat pipes, ceramic fabric heat pipes have been demonstrated to operate under typical space conditions, and large mass reductions are possible by using fabric composite heat pipes for heat rejection radiator systems.

Klein, A.C.; Gulshan-Ara, Z.; Kiestler, W.; Snuggerud, R.; Marks, T.S. (Department of Nuclear Engineering, Oregon State University, Corvallis, Oregon 97331 (United States))

1993-01-10T23:59:59.000Z

173

Apparatus for rotating and reciprocating well pipe  

SciTech Connect (OSTI)

This patent describes an apparatus for simultaneously rotating and reciprocating well pipe, having an upper end, and mechanically utilizing a rotary table attached to a drilling rig, comprising: a rotating pipe clamp assembly having an irregular cross-sectional mid-member and clamp members for releasably gripping the well pipe connected to the ends of the mid-member for rotation therewith; a square block for fitting to the rotary table square and having a selected grooved interior configuration; a torque transmitting means fitted into the grooves having openings therethrough having the same irregular cross-section as the mid-member cross-section; and a torque limiting means connecting the torque transmitting means and the block for limiting torque applied through the well pipe via the clamp assembly and the torque transmitting means.

Davis, K.D.

1988-04-12T23:59:59.000Z

174

Aerogel Impregnated Polyurethane Piping and Duct Insulation  

Broader source: Energy.gov (indexed) [DOE]

Aerogel Impregnated Polyurethane Aerogel Impregnated Polyurethane Piping and Duct Insulation David M. Hess InnoSense LLC david.hess@innosense.us, 310-530-2011 April 4, 2013 2 | Building Technologies Office eere.energy.gov Purpose & Objectives Problem Statement: Develop an efficient insulation system that will adhere to housing duct work and pipe structures while conforming to complex geometries. New insulations must increase the R-value of existing materials and be easy to apply or retrofit to existing structures.

175

Thermal response of a flat heat pipe sandwich structure to a localized heat flux  

E-Print Network [OSTI]

metal foam wick and distilled water as the working fluid. Heat was applied via a propane torch and radiative heat transfer. A novel method was developed to estimate experimentally, the heat flux distribution rights reserved. Keywords: Flat heat pipe; Thermal spreader; Heat transfer; Evaporator; Condenser 1

Wadley, Haydn

176

Analysis of chlorinated polyvinyl chloride pipe burst problems :Vasquez residence system inspection.  

SciTech Connect (OSTI)

This report documents the investigation regarding the failure of CPVC piping that was used to connect a solar hot water system to standard plumbing in a home. Details of the failure are described along with numerous pictures and diagrams. A potential failure mechanism is described and recommendations are outlined to prevent such a failure.

Black, Billy D.; Menicucci, David F.; Harrison, John (Florida Solar Energy Center)

2005-10-01T23:59:59.000Z

177

Structure of optimal pipe networks subject to a global constraint Marc Durand  

E-Print Network [OSTI]

the total energy dissipation rate is studied analytically. Among all the possible pipe networks that can, among others, the water, natural gas and power supply of a city, telecommunication networks, rail are not independent but must satisfy a conservation law at every source, sink, and ad­ ditional node. That is, the sum

178

Thermionic generator module with heat pipes  

SciTech Connect (OSTI)

A thermionic converter module is described comprising: a first heat pipe with an annular casing which has a first surface located on an inside surface of the annular casing, at least part of the first surface of the casing of the first heat pipe having constructed upon it a thermionic converter emitter located so that heat will be transferred by conduction from the first heat pipe casing to the thermionic converter emitter; a second heat pipe with a casing which has a second surface, the second surface being located within the first surface of the annular casing of the first heat pipe so that it is surrounded by the first surface; a thermionic converter collector located so as to transfer heat by conduction to the second surface of the casing of the second heat pipe with the thermionic converter collector being adjacent to the thermionic converter emitter but being separated from the thermionic converter emitter by an inter electrode space; and end fitting structures located so that, with the thermionic converter collector and the thermionic converter emitter, they complete an enclosure around the inter electrode space and form an evacuated enclosure within which are located the thermionic converter collector and the thermionic converter emitter.

Horner-Richardson, K.; Ernst, D.M.

1993-06-15T23:59:59.000Z

179

Tankless Demand Water Heater Basics | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Demand Water Heater Basics Demand Water Heater Basics Tankless Demand Water Heater Basics August 19, 2013 - 2:57pm Addthis Illustration of an electric demand water heater. At the top of the image, the heating unit is shown. Cold water flows in one end of a pipe, flows through and around several curved pipes over the heating elements, and out the other end as hot water. Beneath the heating unit, a typical sink setup is shown. The sink has two pipes coming out the bottom, one for the hot water line and one for the cold water line. Both pipes lead to the heating unit, which is installed in close proximity to the area of hot water use, and is connected to a power source (110 or 220 volts). Demand (tankless or instantaneous) water heaters have heating devices that are activated by the flow of water, so they provide hot water only as

180

Tankless Demand Water Heater Basics | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Tankless Demand Water Heater Basics Tankless Demand Water Heater Basics Tankless Demand Water Heater Basics August 19, 2013 - 2:57pm Addthis Illustration of an electric demand water heater. At the top of the image, the heating unit is shown. Cold water flows in one end of a pipe, flows through and around several curved pipes over the heating elements, and out the other end as hot water. Beneath the heating unit, a typical sink setup is shown. The sink has two pipes coming out the bottom, one for the hot water line and one for the cold water line. Both pipes lead to the heating unit, which is installed in close proximity to the area of hot water use, and is connected to a power source (110 or 220 volts). Demand (tankless or instantaneous) water heaters have heating devices that are activated by the flow of water, so they provide hot water only as

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

New standards in flexible pipe technology including API Spec 17J  

SciTech Connect (OSTI)

Recent and future developments in the offshore industry will see the use of flexible pipes in more severe applications than previously. Included in this is its use in deep water, high temperature, high pressure and sour service applications. There is therefore a requirement in the industry for the development of consistent standards for the specification, design, materials, manufacturing and testing of flexible pipes. A Joint Industry Project (JIP) commenced early in 1994 to develop these new industry wide standards for unbonded flexible pipe. The 20 participants to the JIP included twelve oil companies, three manufacturers, three regulatory authorities and three contractors. The first phase of the project involved the development of a standard specification for flexible pipe, with a second phase, presently ongoing, to develop a new recommended practice for flexible pipe. The initial development of the industry standard specification was completed in May of 1995 and the document was subsequently submitted to API for technical review. This was completed by December 1995. The specification was updated accordingly in cooperation between API and the JIP, and subsequently released in January 1996 for API balloting. The specification is expected to be adopted and published as API Spec 17J by the middle of 1996. The specification will also be incorporated during 1996 into the new ISO series of standards for subsea equipment. The recommended practice will update API RP 17B to supplement the pipe specification and incorporate new technological developments. This paper discusses the scope, including new developments, addressed by API Spec 17J and also describes significant aspects in the updating of the recommended practice. This development of new standards within the flexible pipe industry is in line with the objectives of initiatives such as CRINE and NORSOK.

Grealish, F.W.; Bliault, A.; Caveny, K.P.

1996-12-31T23:59:59.000Z

182

Piping inspection instrument carriage with precise and repeatable position control and location determination  

DOE Patents [OSTI]

An instrument carriage for inspection of piping comprises front and rear leg assemblies for engaging the interior of the piping and supporting and centering the carriage therein, and an instrumentation arm carried by a shaft system running from the front to rear leg assemblies. The shaft system has a screw shaft for moving the arm axially and a spline gear for moving the arm azimuthally. The arm has a pair of air cylinders that raise and lower a plate in the radial direction. On the plate are probes including an eddy current probe and an ultrasonic testing probe. The ultrasonic testing probe is capable of spinning 360.degree. about its axis. The instrument carriage uses servo motors and pressurized air cylinders for precise actuation of instrument components and precise, repeatable actuation of position control mechanisms.

Hapstack, Mark (North Augusta, SC); Talarek, Ted R. (Augusta, GA); Zollinger, W. Thor (Martinez, GA); Heckendorn, II, Frank M. (Alken, SC); Park, Larry R. (North Augusta, SC)

1994-01-01T23:59:59.000Z

183

Piping inspection instrument carriage with precise and repeatable position control and location determination  

DOE Patents [OSTI]

An instrument carriage for inspection of piping comprises front and rear leg assemblies for engaging the interior of the piping and supporting and centering the carriage therein, and an instrumentation arm carried by a shaft system running from the front to rear leg assemblies. The shaft system has a screw shaft for moving the arm axially and a spline gear for moving the arm azimuthally. The arm has a pair of air cylinders that raise and lower a plate in the radial direction. On the plate are probes including an eddy current probe and an ultrasonic testing probe. The ultrasonic testing probe is capable of spinning 360[degree] about its axis. The instrument carriage uses servo motors and pressurized air cylinders for precise actuation of instrument components and precise, repeatable actuation of position control mechanisms. 8 figures.

Hapstack, M.; Talarek, T.R.; Zollinger, W.T.; Heckendorn, F.M. II; Park, L.R.

1994-02-15T23:59:59.000Z

184

EnergyPlus Run Time Analysis  

E-Print Network [OSTI]

Tree LawrenceBerkeleyNationalLaboratory Page37 California EnergyEnergy Commission EnergyPlus Run Time Analysis Plant Supply Calling Tree (Energy Commission EnergyPlus Run Time Analysis Appendix A EnergyPlus Call Tree

Hong, Tianzhen

2009-01-01T23:59:59.000Z

185

Fermilab collider run 1b accelerator performance  

SciTech Connect (OSTI)

This report summarizes the performance of Run 1b as of the end of July 1995. This run is the conclusion of Fermilab Collider Run 1, which consists of Run 1a (May 1992 - May 1993) and Run 1b (January 1994 - February 1996). Run 1b is characterized by being the first with the new 400 MeV Linac. At this time the run is not complete. Colliding beam physics is scheduled to resume after the summer 1995 shut down and continue until mid-February 1996. All of the operation to date is at a Tevatron energy of 900 GeV. This report emphasizes performance numbers and the various improvements made to systems to achieve this performance. It will only discuss the underlying physics to a limited extent. The report is divided into sections on: run statistics, I&C issues, proton source performance, antiproton source performance, main ring performance, Tevatron performance, and a summary.

Bharadwaj, V.; Halling, M.; Lucas, P.; McCrory, E.; Mishra, S.; Pruss, S.; Werkema, S.

1996-04-01T23:59:59.000Z

186

Heat pipes for use in a magnetic field  

DOE Patents [OSTI]

A heat pipe configuration for use in a magnetic field environment of a fusion reactor is disclosed. Heat pipes for operation in a magnetic field when liquid metal working fluids are used are optimized by flattening of the heat pipes having an unobstructed annulus which significantly reduces the adverse side region effect of the prior known cylindrically configured heat pipes. The flattened heat pipes operating in a magnetic field can remove 2--3 times the heat as a cylindrical heat pipe of the same cross sectional area. 4 figs.

Werner, R.W.; Hoffman, M.A.

1983-07-19T23:59:59.000Z

187

Running Interactive Jobs on Edison  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Interactive Jobs Interactive Jobs Interactive Jobs To run an interactive job on Edison's compute nodes you must request the number of nodes you want and have the system allocate resources from the pool of free nodes. The following command requests 2 nodes using the debug queue. edison% qsub -I -V -q debug -l mppwidth=48 The -I flag specifies an interactive job. The -V flag passes your current environment variable settings to the compute environment. The -q flag specifies the name of the queue and -l mppwidth determines the number of nodes to allocate for your job, but not as you might expect. The number of nodes given to your job (remember, the system allocates nodes, not cores), is the value of mppwidth divided by the number of cores per node. On Edison, with 24 cores per node, the number of nodes is mppwidth/24 plus one

188

Running Interactive Jobs on Hopper  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Interactive Jobs Interactive Jobs Interactive Jobs To run an interactive job on Hopper's compute nodes you must request the number of nodes you want and have the system allocate resources from the pool of free nodes. The following command requests 2 nodes using the interactive queue. hopper% qsub -I -V -q interactive -l mppwidth=48 The -I flag specifies an interactive job. The -V flag passes your current environment variable settings to the compute environment. The -q flag specifies the name of the queue and -l mppwidth determines the number of nodes to allocate for your job, but not as you might expect. The number of nodes given to your job (remember, the system allocates nodes, not cores), is the value of mppwidth divided by the umber of cores per node. On Hopper, with 24 cores per node, the number of nodes is mppwidth/24 plus one more if

189

Running Interactive Jobs on Edison  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Interactive Jobs Interactive Jobs Interactive Jobs To run an interactive job on Edison's compute nodes you must request the number of nodes you want and have the system allocate resources from the pool of free nodes. The following command requests 2 nodes using the debug queue. edison% qsub -I -V -q debug -l mppwidth=32 The -I flag specifies an interactive job. The -V flag passes your current environment variable settings to the compute environment. The -q flag specifies the name of the queue and -l mppwidth determines the number of nodes to allocate for your job, but not as you might expect. The number of nodes given to your job (remember, the system allocates nodes, not cores), is the value of mppwidth divided by the number of cores per node. On Edison, with 16 cores per node, the number of nodes is mppwidth/16 plus one

190

BOA: Asbestos pipe-insulation removal robot system. Phase I. Topical report, November 1993--December 1994  

SciTech Connect (OSTI)

Based on several key design criteria and site visits, we developed a Robot design and built a system which automatically strips the lagging and insulation from the pipes, and encapsulates them under complete vacuum operation. The system can operate on straight runs of piping in horizontal or vertical orientations. Currently we are limited to four-inch diameter piping without obstacles as well as a somewhat laborious emplacement and removal procedure. Experimental results indicated that the current robotic abatement process is sound yet needs to be further expanded and modified. One of the main discoveries was that a longitudinal cut to fully allow the paddles to dig in and compress the insulation off the pipe is essential. Furthermore, a different cutting method might be explored to alleviate the need for a deeper cut and to enable a combination of certain functions such as compression and cutting. Unfortunately due to a damaged mechanism caused by extensive testing, we were unable to perform vertical piping abatement experiments, but foresee no trouble in implementing them in the next proposed Phase. Other encouraging results have BOA removing asbestos at a rate of 4-5 ft./h compared to 3 ft./h for manual removal of asbestos with a 3-person crew. However, we feel confident that we can double the asbestos removal rate by improving cutting speed, and increasing the length of the BOA robot. The containment and vacuum system on BOA is able to achieve the regulatory requirement for airborne fiber emissions of 0.01 fibers/ccm/8-hr. shift. Currently, BOA weighs about 117 pounds which is more than a human is permitted to lift overhead under OSHA requirements (i.e., 25 pounds). We are considering designing the robot into two components (i.e., locomotor section and cutter/removal section) to aid human installation as well as incorporating composite materials. A more detailed list of all the technical modifications is given in this topical report.

Schempf, H.; Bares, J.E.

1995-01-01T23:59:59.000Z

191

Running Jobs with the UGE Batch System  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Jobs Jobs Running Jobs Submitting Jobs How to submit your job to the UGE. Read More » Running with Java Solutions to some of the common problems users have with running on Genepool when the JVM is part of their workflow. Read More » Batch Script Examples Sample batch scripts for Genepool/Phoebe highlighting queue selection, setting the run time and requesting large amounts of memory. Read More » Interactive Jobs How to run your workflow on the interactive nodes. Read More » Job Arrays Job arrays are a way to efficiently submit large numbers of jobs. Read More » Parallel Batch Scripts This page has examples of how to run parallel jobs on Genepool. Read More » Best Practices - and Practices to Avoid Things users should do to run jobs efficiently using UGE. Read More »

192

Neutron imaging of alkali metal heat pipes  

SciTech Connect (OSTI)

High-temperature heat pipes are two-phase, capillary driven heat transfer devices capable of passively providing high thermal fluxes. Such a device using a liquid-metal coolant can be used as a solution for successful thermal management on hypersonic flight vehicles. Imaging of the liquid-metal coolant inside will provide valuable information in characterizing the detailed heat and mass transport. Neutron imaging possesses an inherent advantage from the fact that neutrons penetrate the heat pipe metal walls with very little attenuation, but are significantly attenuated by the liquid metal contained inside. Using the BT-2 beam line at the National Institute of Standards and Technology (NIST) in Gaithersburg, Maryland, preliminary efforts have been conducted on a nickel-sodium heat pipe. The contrast between the attenuated beam and the background is calculated to be approximately 3%. This low contrast requires sacrifice in spatial or temporal resolution so efforts have since been concentrated on lithium (Li) which has a substantially larger neutron attenuation cross section. Using the CG-1D beam line at the High Flux Isotope Reactor (HFIR) of Oak Ridge National Laboratory (ORNL) in Oak Ridge, Tennessee, the first neutron images of high-temperature molybdenum (Mo)-Li heat pipes have been achieved. The relatively high neutron cross section of Li allows for the visualization of the Li working fluid inside the heat pipes. The evaporator region of a gravity assisted cylindrical heat pipe prototype 25 cm long was imaged from start-up to steady state operation up to approximately 900 C. In each corner of the square bore inside, the capillary action raises the Li meniscus above the bulk Li pool in the evaporator region. As the operational temperature changes, the meniscus shapes and the bulk meniscus height also changes. Furthermore, a three-dimensional tomographic image is also reconstructed from the total of 128 projection images taken 1.4o apart in which the Li had already cooled and solidified.

Kihm, Ken [University of Tennessee, Knoxville (UTK); Kirchoff, Eric [University of Tennessee, Knoxville (UTK); Golden, Matt [University of Tennessee, Knoxville (UTK); Rosenfeld, J. [Thermacore Inc.; Rawal, S. [Lockheed Martin Space Systems Company; Pratt, D. [United States Air Force Research Laboratory, Wright-Patterson Air Force Base; Bilheux, Hassina Z [ORNL; Walker, Lakeisha MH [ORNL; Voisin, Sophie [ORNL; Hussey, Dan [NIST Center for Neutron Research (NCRN), Gaithersburg, MD

2013-01-01T23:59:59.000Z

193

Development and Testing of Insulated Drill Pipe  

SciTech Connect (OSTI)

This project has comprised design, analysis, laboratory testing, and field testing of insulated drill pipe (IDP). This paper will briefly describe the earlier work, but will focus on results from the recently-completed field test in a geothermal well. Field test results are consistent with earlier analyses and laboratory tests, all of which support the conclusion that insulated drill pipe can have a very significant effect on circulating fluid temperatures. This will enable the use of downhole motors and steering tools in hot wells, and will reduce corrosion, deterioration of drilling fluids, and heat-induced failures in other downhole components.

Champness, T.; Finger, J.; Jacobson, R.

1999-07-07T23:59:59.000Z

194

Scheduling Job Families on Non-Identical Parallel Machines under Run-To-Run Control Constraints  

E-Print Network [OSTI]

1 Scheduling Job Families on Non-Identical Parallel Machines under Run-To-Run Control Constraints A}@emse.fr Keywords: Scheduling, Parallel Machines, Advanced Process Control, Time Constraint, Integer Linear), Run to Run control (R2R), and more recently Virtual Metrology (VM). Scheduling and APC are usually

Paris-Sud XI, Université de

195

Development of Next Generation Multiphase Pipe Flow Prediction Tools  

SciTech Connect (OSTI)

The developments of oil and gas fields in deep waters (5000 ft and more) will become more common in the future. It is inevitable that production systems will operate under multiphase flow conditions (simultaneous flow of gas, oil and water possibly along with sand, hydrates, and waxes). Multiphase flow prediction tools are essential for every phase of hydrocarbon recovery from design to operation. Recovery from deep-waters poses special challenges and requires accurate multiphase flow predictive tools for several applications, including the design and diagnostics of the production systems, separation of phases in horizontal wells, and multiphase separation (topside, seabed or bottom-hole). It is crucial for any multiphase separation technique, either at topside, seabed or bottom-hole, to know inlet conditions such as flow rates, flow patterns, and volume fractions of gas, oil and water coming into the separation devices. Therefore, the development of a new generation of multiphase flow predictive tools is needed. The overall objective of the proposed study is to develop a unified model for gas-oil-water three-phase flow in wells, flow lines, and pipelines to predict flow characteristics such as flow patterns, phase distributions, and pressure gradient encountered during petroleum production at different flow conditions (pipe diameter and inclination, fluid properties and flow rates). In the current multiphase modeling approach, flow pattern and flow behavior (pressure gradient and phase fractions) prediction modeling are separated. Thus, different models based on different physics are employed, causing inaccuracies and discontinuities. Moreover, oil and water are treated as a pseudo single phase, ignoring the distinct characteristics of both oil and water, and often resulting in inaccurate design that leads to operational problems. In this study, a new model is being developed through a theoretical and experimental study employing a revolutionary approach. The basic continuity and momentum equations is established for each phase, and used for both flow pattern and flow behavior predictions. The required closure relationships are being developed, and will be verified with experimental results. Gas-oil-water experimental studies are currently underway for the horizontal pipes. Industry-driven consortia provide a cost-efficient vehicle for developing, transferring, and deploying new technologies into the private sector. The Tulsa University Fluid Flow Projects (TUFFP) is one of the earliest cooperative industry-university research consortia. TUFFP's mission is to conduct basic and applied multiphase flow research addressing the current and future needs of hydrocarbon production and transportation. TUFFP participants and The University of Tulsa are supporting this study through 55% cost sharing.

Cem Sarica; Holden Zhang

2006-05-31T23:59:59.000Z

196

Evaluating an experimental setup for pipe leak detection  

E-Print Network [OSTI]

An experimental setup with 4 inch inner diameter PVC pipe modules is designed to mimic a real life piping system in which to test possible leak detection mechanisms. A model leak detection mechanism is developed which ...

Garay, Luis I. (Luis Ignacio)

2010-01-01T23:59:59.000Z

197

Smoothing of pipe system completion processes in a shipyard environment/  

E-Print Network [OSTI]

Due to a number of different production issues, the manufacture of template pipes is often delayed. These delays hold up pipe system completion on board the ships in production and can delay payments from the Ministry of ...

Zojwalla, Shaheen J. (Shaheen Joyab), 1977-

2004-01-01T23:59:59.000Z

198

On-Site Wastewater Treatment Systems: Gravel-less Pipe  

E-Print Network [OSTI]

Gravel-less pipe systems distribute treated wastewater into the soil. This publication lists the advantages and disadvantages of gravel-less pipe systems, explains how to maintain them and gives estimates of costs....

Lesikar, Bruce J.

2000-04-10T23:59:59.000Z

199

An Economic Analysis of Erosion and Sediment Damage in the Lower Running Draw Watershed  

E-Print Network [OSTI]

of a study on the economic impact of implementing potential agricultural NPS pollution controls in Lower Running Water Draw watershed. The study focuses on: (a) the effects of erosion control on farm income, (b) off-site sediment damages...

Reneau, D. R.; Taylor, C. R.; Harris, B. L.; Lacewell, R. D.; Mueller, P. E.

200

Sizing safety valve vent pipes for saturated steam  

SciTech Connect (OSTI)

A generalized procedure based on pressure and entropy as independent variables is used to calculate choked flow conditions at the valve orifice, valve pipe outlet and vent pipe outlet. At the third location, the results are independent of whether flow in the vent pipe is supersonic or subsonic. An integral method is used to calculate the vent pipe length required to choke the flow. 16 refs.

Brandmaier, H.E.

1982-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Applications of heat pipes for high thermal load beam lines  

SciTech Connect (OSTI)

The high flux beam produced by insertion devices often requires special heat removal techniques. For the optical elements used in such high thermal load beam lines, the required precision demands a highly accurate design. Heat pipe cooling of critical elements of the X-1 beam line at the National Synchrotron Light Source is described. This method reduces vibrations caused by water cooling systems and simplifies the design. In some of these designs, deposited heat must be transferred through unbonded contact interfaces. A pinhole assembly and a beam position monitor designed for the X-1 beam line both transfer heat through such interfaces in an ultrahigh vacuum environment. The fundamental design objective is that of removing the heat with minimal interface thermal resistance. We present our test method and results for measuring the thermal resistance across metallic interfaces as a function of contact pressure. The design of some devices which utilize both heat pipes and thermal contact interfaces will also be described. 12 refs., 8 figs.

Shu, D.; Mortazavi, P.; Rarback, H.; Howells, M.R.

1985-01-01T23:59:59.000Z

202

Numerical analysis of wall shear patterns on the external wall of an API 5L X42 natural gas pipe  

Science Journals Connector (OSTI)

Abstract Natural gas pipeline is designed and constructed according to stringent international codes and standards, thus it hardly to rupture or leaks. However, erosive water jet from leaked water pipeline is able to erode the pipe surfaces and lead to its failure. Due to complications in understanding the subsurface hydrodynamics of buried pipe condition, Computational Fluid Dynamics (CFD) is commonly used to predict its characteristics to provide multifaceted overview of the erosion phenomenon. In this study, CFD simulation of multiple water leakage surface of 0.05m diameter at 9atm water pipeline pressure was performed with separation distance of 0.05m, using standard kepsilon model (SKE) of turbulent model. Simulation results were obtained using discrete random walk to determine the instantaneous fluid velocity. It was found that different region of water shear and sand shear on natural gas pipelines was formed due to the strikes of erosive slurry at different angles. The CFD simulation results showed that sand was the primary cause of the natural gas pipe wall shear, causing cutting and deformation region on the surface of gas pipe. The erosion pattern of the three ruptured holes from the incident sites had a similar trend with those from simulated CFD results of water jetting source at angles of 45, 60, and 75.

R. Mohsin; Z.A. Majid; F.L. Tan

2015-01-01T23:59:59.000Z

203

Impacts of Soil and Pipe Thermal Conductivity on Performance of Horizontal Pipe in a Ground-source Heat Pump  

E-Print Network [OSTI]

In this paper the composition and thermal property of soil are discussed. The main factors that impact the soil thermal conductivity and several commonly-used pipe materials are studied. A model of heat exchanger with horizontal pipes of ground...

Song, Y.; Yao, Y.; Na, W.

2006-01-01T23:59:59.000Z

204

Drill pipe management extends drillstring life  

SciTech Connect (OSTI)

Better handling procedures and frequent drill pipe inspections prolong the life of a drillstring. Crews taught to make quick visual inspections during rig moves and tripping can spot problem pipe early, thus preventing downtime or extensive repairs. Because of escalating costs of drillstring repair and replacement, Global Marine Drilling Co. organized a task force in March 1989 to define problem areas and establish new handling and maintenance procedures. The task force estimated that one 20,000-ft drillstring costs abut $600,000 and has a 7-year life span. Assuming the average rig life is 21 years, each rig will wear out three strings, totaling $1.8 million. The addition of $30,000/year for full rack inspections, repairs and downhole loss brings the total to approximately $2.4 million/rig over the 21 years. A contractor with a fleet of 25 rigs could expend $60 million on drill pipe-the construction cost of a well-equipped, 300-ft jack up rig. The task force reported on in this paper identifies four basic caused of drill pipe failures: Tool joint and tube OD wear, Internal corrosion, Fatigue cracking in the slip and internal upset areas, Physical damage to the tool joint threads and shoulders, and the tube.

Shepard, J.S. (Global Marine Drilling Co., Houston, TX (US))

1991-10-28T23:59:59.000Z

205

ASBESTOS PIPE-INSULATION REMOVAL ROBOT SYSTEM  

SciTech Connect (OSTI)

This final topical report details the development, experimentation and field-testing activities for a robotic asbestos pipe-insulation removal robot system developed for use within the DOE's weapon complex as part of their ER and WM program, as well as in industrial abatement. The engineering development, regulatory compliance, cost-benefit and field-trial experiences gathered through this program are summarized.

Unknown

2000-09-15T23:59:59.000Z

206

Characterization of radioactive contamination inside pipes with the Pipe Explorer{trademark} system. Final report  

SciTech Connect (OSTI)

The Department of Energy (DOE) is currently in the process of decommissioning and dismantling many of its nuclear materials processing facilities that have been in use for several decades. Site managers throughout the DOE complex must employ the safest and most cost effective means to characterize, remediate and recycle or dispose of hundreds of miles of potentially contaminated piping and duct work. The DOE discovered that standard characterization methods were inadequate for its pipes, drains, and ducts because many of the systems are buried or encased. In response to the DOE`s need for a more specialized characterization technique, Science and Engineering Associates, Inc. (SEA) developed the Pipe Explorer{trademark} system through a DOE Office of Science and Technology (OST) contract administered through the Federal Energy Technology Center (FETC). The purpose of this report is to serve as a comprehensive overview of all phases of the Pipe Explorer{trademark} development project. The report is divided into 6 sections. Section 2 of the report provides an overview of the Pipe Explorer{trademark} system, including the operating principles of using an inverting membrane to tow sensors into pipes. The basic components of the characterization system are also described. Descriptions of the various deployment systems are given in Section 3 along with descriptions of the capabilities of the deployment systems. During the course of the development project 7 types of survey instruments were demonstrated with the Pipe Explorer{trademark} and are a part of the basic toolbox of instruments available for use with the system. These survey tools are described in Section 4 along with their typical performance specifications. The 4 demonstrations of the system are described chronologically in Section 5. The report concludes with a summary of the history, status, and future of the Pipe Explorer{trademark} system in Section 6.

Cremer, C.D.; Kendrick, D.T.; Lowry, W.; Cramer, E.

1997-09-30T23:59:59.000Z

207

Factors affecting water coning  

E-Print Network [OSTI]

of these variables and plotted as reservoir WOR versus cumulative production of recoverable oil; the water and oil production characteristi cs of a field situation can be predicted by finding the equivalent system among these computer runs. The surface water... of these variables and plotted as reservoir WOR versus cumulative production of recoverable oil; the water and oil production characteristi cs of a field situation can be predicted by finding the equivalent system among these computer runs. The surface water...

Parker, Randy Keith

2012-06-07T23:59:59.000Z

208

Characterization of pipes, drain lines, and ducts using the pipe explorer system  

SciTech Connect (OSTI)

As DOE dismantles its nuclear processing facilities, site managers must employ the best means of disposing or remediating hundreds of miles of potentially contaminated piping and duct work. Their interiors are difficult to access, and in many cases even the exteriors are inaccessible. Without adequate characterization, it must be assumed that the piping is contaminated, and the disposal cost of buried drain lines can be on the order of $1,200/ft and is often unnecessary as residual contamination levels often are below free release criteria. This paper describes the program to develop a solution to the problem of characterizing radioactive contamination in pipes. The technical approach and results of using the Pipe Explorer {trademark} system are presented. The heart of the system is SEA`s pressurized inverting membrane adapted to transport radiation detectors and other tools into pipes. It offers many benefits over other pipe inspection approaches. It has video and beta/gamma detection capabilities, and the need for alpha detection has been addressed through the development of the Alpha Explorer{trademark}. These systems have been used during various stages of decontamination and decommissioning of DOE sites, including the ANL CP-5 reactor D&D. Future improvements and extensions of their capabilities are discussed.

Cremer, C.D.; Kendrick, D.T.; Cramer, E.

1997-05-01T23:59:59.000Z

209

Lung Cancer and Arsenic Concentrations in Drinking Water in Chile  

E-Print Network [OSTI]

cancer risks was found in a small cohort study in Japan involving residents using well water con concentrations in water sources piped to households. It is the first large, popula- tion-based lung cancer case

California at Berkeley, University of

210

Energy-efficient water heating  

SciTech Connect (OSTI)

This fact sheet describes how to reduce the amount of hot water used in faucets and showers, automatic dishwashers, and washing machines; how to increase water-heating system efficiency by lowering the water heater thermostat, installing a timer and heat traps, and insulating hot water pipes and the storage tank; and how to use off-peak power to heat water. A resource list for further information is included.

NONE

1995-01-01T23:59:59.000Z

211

EnergyPlus Run Time Analysis  

SciTech Connect (OSTI)

EnergyPlus is a new generation building performance simulation program offering many new modeling capabilities and more accurate performance calculations integrating building components in sub-hourly time steps. However, EnergyPlus runs much slower than the current generation simulation programs. This has become a major barrier to its widespread adoption by the industry. This paper analyzed EnergyPlus run time from comprehensive perspectives to identify key issues and challenges of speeding up EnergyPlus: studying the historical trends of EnergyPlus run time based on the advancement of computers and code improvements to EnergyPlus, comparing EnergyPlus with DOE-2 to understand and quantify the run time differences, identifying key simulation settings and model features that have significant impacts on run time, and performing code profiling to identify which EnergyPlus subroutines consume the most amount of run time. This paper provides recommendations to improve EnergyPlus run time from the modeler?s perspective and adequate computing platforms. Suggestions of software code and architecture changes to improve EnergyPlus run time based on the code profiling results are also discussed.

Hong, Tianzhen; Buhl, Fred; Haves, Philip

2008-09-20T23:59:59.000Z

212

Running against hunger | National Nuclear Security Administration  

National Nuclear Security Administration (NNSA)

Running against hunger | National Nuclear Security Administration Running against hunger | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Running against hunger Running against hunger Posted By Office of Public Affairs Pantex Security Police Officers Byron Logan and Randy Stokes completed their annual Run Against Hunger last week. The two officers ran and biked

213

Insights Gained from Ultrasonic Testing of Piping Welds Subjected to the Mechanical Stress Improvement Process  

SciTech Connect (OSTI)

Pacific Northwest National Laboratory (PNNL) is assisting the United States Nuclear Regulatory Commission (NRC) in developing a position on the management of primary water stress corrosion cracking (PWSCC) in leak-before-break piping systems. Part of this involves determining whether inspections alone, or inspections plus mitigation, are needed. This work addresses the reliability of ultrasonic testing (UT) of cracks that have been mitigated by the mechanical stress improvement process (MSIP). The MSIP has been approved by the NRC (NUREG-0313) since 1986 and modifies residual stresses remaining after welding with compressive, or neutral, stresses near the inner diameter surface of the pipe. This compressive stress is thought to arrest existing cracks and inhibit new crack formation. To evaluate the effectiveness of the MSIP and the reliability of ultrasonic inspections, flaws were evaluated both before and after MSIP application. An initial investigation was based on data acquired from cracked areas in 325-mm-diameter piping at the Ignalina Nuclear Power Plant (INPP) in Lithuania. In a follow-on exercise, PNNL acquired and evaluated similar UT data from a dissimilar metal weld (DMW) specimen containing implanted thermal fatigue cracks. The DMW specimen is a carbon steel nozzle-to-safe end-to-stainless steel pipe section that simulates a pressurizer surge nozzle. The flaws were implanted in the nozzle-to-safe end Alloy 82/182 butter region. Results are presented on the effects of MSIP on specimen surfaces, and on UT flaw responses.

Anderson, Michael T.; Cinson, Anthony D.; Crawford, Susan L.; Diaz, Aaron A.; Moran, Traci L.

2010-12-01T23:59:59.000Z

214

Work plan for vibration cable re-route and water flush system modifications for 107-AN mixer pump  

SciTech Connect (OSTI)

A mixer pump (75 horsepower Hazleton submersible) is to be installed in the central pump pit of Double-Shell Tank 241-AN-107 for the Caustic Addition Project. The mixer pump will be used as a platform to inject, mix, and entrain caustic with the waste, in order to bring the waste hydroxyl ion concentration into compliance with Tank Farm operating specifications. Testing of the mixer pump and caustic addition system revealed that the mixer pump`s vibration cable picks up electromagnetic interference from the motor power cable during variable speed operation of the pump. Also, it was noted that the mixer pump`s water flush system may not be as effective as desired. Ergo this work plan for improving the operation of these mixer pump subsystems. A new vibration cable shall be routed entirely outside the mixer pump support column pipe, up thru a new penetration in the pump mounting flange. The existing penetration in the side of the pipe is to be plugged. Increasing the distance between power and instrument cables may reduce or eliminate electromagnetic interference to the vibration monitor. The mixer pump water flush system shall be modified to allow pressure isolation of individual branches. A header is to be installed on the middle section of the support column. Each branch (there are three) shall contain a solenoid valve (normally open) to control flow into the branch. The solenoid cables shall be routed up thru three new penetrations in the pump mounting flange to a new electrical box mounted on the flange. The existing flush piping to the inlet screen will remain but the continuation of the flush piping to the pump discharge nozzles is to be removed and the tee plugged. New stainless steel tubing is to be run down to the pump discharge nozzles. Pressure isolation of individual branches will maximize the flush system`s effectiveness at blasting potential sediment clogs out of the pump discharge nozzles.

Leshikar, G.A.

1995-04-14T23:59:59.000Z

215

Marathon pipe line's new control system  

SciTech Connect (OSTI)

A new control system for Marathon Pipe Line Company's 4200 mile long oil pipeline is described. The pipeline transports 1 1/2 million barrels/day of crude oil and refined products. A comprehensive, centralized computer control system in Findlay, Ohio was developed to provide precision control of the system. Marathon is almost finished with the supervisory control and data acquisition system which can almost instantaneously control fluid movements throughout the network with the push of a few buttons.

Ross, J.

1983-03-01T23:59:59.000Z

216

Calculator programs for pipe stress engineering  

SciTech Connect (OSTI)

This book contains a collection of programs for solving a wide variety of stress problems using both the TI-59 and HP-41CV calculators. Each program is prefaced with a description of the problem to be solved, nomenclature, code restrictions and program limitations. Solutions are explained analytically and then followed by the complete program listing, documentation and checklists. Topics include calculations for pipewall thickness, pressure vessel analysis, reinforcement pads, allowable span, vibration, stress, and two-anchor piping systems.

Morgan, K.S.

1985-01-01T23:59:59.000Z

217

Shock Chlorination of Stored Water Supplies  

E-Print Network [OSTI]

of their well water. While these procedures effectively may san- itize water wells and distribution systems, addition- al steps may be necessary to shock- chlorinate water stored in tanks. Storage Tanks In several regions of Texas, such as the Texas Hill... Country and the Central Texas Blacklands, water is pumped from wells into large storage tanks. Pipes from such tanks then deliver water to houses for domestic use. However, shock-chlorinating a water well alone may not provide enough chlorinated water...

Dozier, Monty; McFarland, Mark L.

2005-05-25T23:59:59.000Z

218

Drinking Water Problems: Corrosion  

E-Print Network [OSTI]

Drinking Water Problems: Corrosion Mark L. McFarland, Tony L. Provin, and Diane E. Boellstorff and fail. Corrosion can cause three types of damage: · The entire metal surface gradually thins and red (Fig. 1). · Deep pits appear that can penetrate pipe or tank walls. This type of corrosion may not add

219

Water Heating | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Water Heating Water Heating Water Heating Infographic: Water Heaters 101 Everything you need to know about saving money on water heating costs Read more Selecting a New Water Heater Tankless? Storage? Solar? Save money on your water heating bill by choosing the right type of energy-efficient water heater for your needs. Read more Sizing a New Water Heater When buying a new water heater, bigger is not always better. Learn how to buy the right size of water heater. Read more You can reduce your monthly water heating bills by selecting the appropriate water heater for your home or pool and by using some energy-efficient water heating strategies. Some simple do-it-yourself projects, like insulating hot water pipes and lowering your water heating temperature, can also help you save money and energy on your water heating.

220

Evaluation of Trenchless Installation Technology for Radioactive Wastewater Piping Applications  

SciTech Connect (OSTI)

The U.S. Department of Energy (DOE) Office of Environmental Management (EM) cleanup mission at Oak Ridge National Laboratory (ORNL) includes dispositioning facilities, contaminated legacy materials/waste, and contamination sources and remediation of soil under facilities, groundwater, and surface water to support final Records of Decision (RODs). The Integrated Facilities Disposition Project (IFDP) is a roughly $15B project for completion of the EM mission at Oak Ridge, with a project duration of up to 35 years. The IFDP Mission Need Statement - Critical Decision-0 (CD-0) - was approved by DOE in July 2007, and the IFDP Alternative Selection and Cost Range - Critical Decision-1 (CD-1) - was approved in November 2008. The IFDP scope includes reconfiguration of waste collection and treatment systems as needed to complete the IFDP remediation and decontamination and decommissioning (D&D) missions in a safe and cost-effective manner while maintaining compliance with all governing regulations and bodies and preserving the support of continuing operations at ORNL. A step in the CD-1 approval process included an external technical review (ETR) of technical approaches proposed in the CD-1 document related to the facility reconfiguration for the ORNL radioactive waste and liquid low-level waste management systems. The ETR team recommended that the IFDP team consider the use of trenchless technologies for installing pipelines underground in and around contaminated sites as part of the alternatives evaluations required in support of the CD-2 process. The team specifically recommended evaluating trenchless technologies for installing new pipes in existing underground pipelines as an alternative to conventional open trench installation methods. Potential benefits could include reduction in project costs, less costly underground piping, fewer disruptions of ongoing and surface activities, and lower risk for workers. While trenchless technologies have been used extensively in the sanitary sewer and natural gas pipeline industries, they have been used far less in contaminated environments. Although trenchless technologies have been used at ORNL in limited applications to install new potable water and gas lines, the technologies have not been used in radioactive applications. This study evaluates the technical risks, benefits, and economics for installing gravity drained and pressurized piping using trenchless technologies compared to conventional installation methods for radioactive applications under ORNL geological conditions. A range of trenchless installation technologies was reviewed for this report for general applicability for replacing existing contaminated piping and/or installing new pipelines in potentially contaminated areas. Installation methods that were determined to have potential for use in typical ORNL contaminated environments were then evaluated in more detail for three specific ORNL applications. Each feasible alternative was evaluated against the baseline conventional open trench installation method using weighted criteria in the areas of environment, safety, and health (ES&H); project cost and schedule; and technical operability. The formulation of alternatives for evaluation, the development of selection criteria, and the scoring of alternatives were performed by ORNL staff with input from vendors and consultants. A description of the evaluation methodology and the evaluation results are documented in the following sections of this report.

Robinson, Sharon M [ORNL; Jubin, Robert Thomas [ORNL; Patton, Bradley D [ORNL; Sullivan, Nicholas M [ORNL; Bugbee, Kathy P [ORNL

2009-09-01T23:59:59.000Z

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Pipe overpack container for trasuranic waste storage and shipment  

DOE Patents [OSTI]

A Pipe Overpack Container for transuranic waste storage and shipment. The system consists of a vented pipe component which is positioned in a vented, insulated 55 gallon steel drum. Both the vented pipe component and the insulated drum are capable of being secured to prevent the contents from leaving the vessel. The vented pipe component is constructed of 1/4 inch stainless steel to provide radiation shielding. Thus, allowing shipment having high Americium-241 content. Several Pipe Overpack Containers are then positioned in a type B, Nuclear Regulatory Commission (NRC) approved, container. In the current embodiment, a TRUPACT-II container was employed and a maximum of fourteen Pipe Overpack Containers were placed in the TRUPACT-II. The combination received NRC approval for the shipment and storage of transuranic waste.

Geinitz, Richard R. (Arvada, CO); Thorp, Donald T. (Broomfield, CO); Rivera, Michael A. (Boulder, CO)

1999-01-01T23:59:59.000Z

222

Common causes of material degradation in buried piping  

SciTech Connect (OSTI)

Buried pipe may fail for innumerable reasons. Causes can be mechanical damage/breakage, chemically initiated corrosion, or a combination. Failures may originate either internally or externally on the pipe. They may be related to flaws in the design, to excessive or unanticipated internal pressure or ground level loading, and/or to poor or uncertain installation practice. Or the pipe may simply ``wear out`` in service. Steel is strong and very forgiving in underground applications, especially with regard to backfill. However, soil support developed through densification or compaction is critical for brittle concrete and vitrified clay tile pipe, and is very important for cast iron and plastic pipe. Chemistry of the soil determines whether or not it will enhance corrosion or other types of degradation. Various causes and mechanisms for deterioration of buried pipe are indicated. Some peculiarities of the different materials of construction are characterized. Repair methods and means to circumvent special problems are described.

Jenkins, C.F.

1997-01-20T23:59:59.000Z

223

On the Radiation of Sound from an Unflanged Circular Pipe  

Science Journals Connector (OSTI)

A rigorous and explicit solution is obtained for the problem of sound radiation from an unflanged circular pipe, assuming axially symmetric excitation. The solution is valid throughout the wave-length range of dominant mode (plane wave) propagation in the pipe. The reflection coefficient for the velocity potential within the pipe and the power-gain function, embodying the characteristics of the radiation pattern, are evaluated numerically. The absorption cross section of the pipe for a plane wave incident from external space, and the gain function for this direction, are found to satisfy a reciprocity relation. In particular, the absorption cross section for normal incidence is just the area of the mouth. At low frequencies of vibration, the velocity potential within the pipe is the same as if the pipe were lengthened by a certain fraction of the radius and the open end behaved as a loop. The exact value of the end correction turns out to be 0.6133.

Harold Levine and Julian Schwinger

1948-02-15T23:59:59.000Z

224

Running Jobs | Argonne Leadership Computing Facility  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Reservations Cobalt Job Control How to Queue a Job Running Jobs FAQs Queuing and Running on BG/Q Systems Data Transfer Debugging & Profiling Performance Tools & APIs Software & Libraries IBM References Intrepid/Challenger/Surveyor Tukey Eureka / Gadzooks Policies Documentation Feedback Please provide feedback to help guide us as we continue to build documentation for our new computing resource. [Feedback Form] Running Jobs Contents Job Submission Submitting a Script Job Sub-block Script Jobs Multiple Consecutive Runs within a Script Job Settings Environment Variables Script Environment Program and Argument Length Limit Job Dependencies Thread Stack Size Verbose Setting for Runjob How do I get each line of the output labeled with the MPI rank that it came from? Mapping of MPI Tasks to Cores

225

Running-Film Vaporizer for LNG  

Science Journals Connector (OSTI)

Advances in welding technology and steel fabrication techniques have permitted the development of a new concept in cryogenic vaporizersthe running-film plate vaporizer. Although similar in heat transfer philosop...

H. H. West; G. L. Puckett

1975-01-01T23:59:59.000Z

226

Run on Sun | Open Energy Information  

Open Energy Info (EERE)

on Sun Jump to: navigation, search Name: Run on Sun Address: 655 S Raymond AV Place: Pasadena, California Zip: 91105 Region: Southern CA Area Sector: Solar Year Founded: 2006 Phone...

227

Running Process Plant Utilities Like a Business  

E-Print Network [OSTI]

utility managers facing the same problem of trying to run their units along business lines can adopt those characteristics of the described model that meet their needs, learn from the experience of Pemex Petroquimica in applying these systems to real...

Pavone, A.

228

SPATIAL TRANSFORMATIONS 1 Running head: Spatial transformations  

E-Print Network [OSTI]

SPATIAL TRANSFORMATIONS 1 Running head: Spatial transformations Multiple Systems for Spatial Imagery: Transformations of Objects and Bodies Jeffrey M. Zacks* and Barbara Tversky * Washington COGNITION & COMPUTATION #12;SPATIAL TRANSFORMATIONS 2 Abstract Problem-solving often requires imagining

Zacks, Jeffrey M.

229

Hot Water DJ: Saving Energy by Pre-mixing Hot Water Md Anindya Prodhan  

E-Print Network [OSTI]

Hot Water DJ: Saving Energy by Pre-mixing Hot Water Md Anindya Prodhan Department of Computer University of Virginia whitehouse@virginia.edu Abstract After space heating and cooling, water heating consumption. Current water heating systems waste up to 20% of their energy due to poor insulation in pipes

Whitehouse, Kamin

230

Magnetohydrodynamic power generation, electromagnetic pumps, heat pipes, and thermionic convertors  

SciTech Connect (OSTI)

The basic principles of operation, components, and design of MHD generators, electromagnetic pumps, heat pipes and thermionic converters are described. 66 references. (WHK)

Pierson, E.S.; Bonyhady, K.A.; Dunn, P.F.; Nathenson, R.D.; Uherka, K.L.

1984-01-01T23:59:59.000Z

231

CRAD, Equipment and Piping Labeling Assessment Plan | Department...  

Broader source: Energy.gov (indexed) [DOE]

and Piping Labeling Assessment Plan More Documents & Publications CRAD, Conduct of Operations Assessment Plan DOE-STD-1044-93 CRAD, Verification and Validation of...

232

International Piping Integrity Research Group (IPIRG) Program. Final report  

SciTech Connect (OSTI)

This is the final report of the International Piping Integrity Research Group (IPIRG) Program. The IPIRG Program was an international group program managed by the U.S. Nuclear Regulatory Commission and funded by a consortium of organizations from nine nations: Canada, France, Italy, Japan, Sweden, Switzerland, Taiwan, the United Kingdom, and the United States. The program objective was to develop data needed to verify engineering methods for assessing the integrity of circumferentially-cracked nuclear power plant piping. The primary focus was an experimental task that investigated the behavior of circumferentially flawed piping systems subjected to high-rate loadings typical of seismic events. To accomplish these objectives a pipe system fabricated as an expansion loop with over 30 meters of 16-inch diameter pipe and five long radius elbows was constructed. Five dynamic, cyclic, flawed piping experiments were conducted using this facility. This report: (1) provides background information on leak-before-break and flaw evaluation procedures for piping, (2) summarizes technical results of the program, (3) gives a relatively detailed assessment of the results from the pipe fracture experiments and complementary analyses, and (4) summarizes advances in the state-of-the-art of pipe fracture technology resulting from the IPIRG program.

Wilkowski, G.; Schmidt, R.; Scott, P. [and others

1997-06-01T23:59:59.000Z

233

Capacitive sensor technology for polyethylene pipe fault detection.  

E-Print Network [OSTI]

??This work develops a Finite Element Analysis simulation to determine if capacitive sensors can be used to detect defects in polyethylene gas distribution pipes. Currently, (more)

Kirby, Travis W.

2009-01-01T23:59:59.000Z

234

A pipe cleaning machine: ERIP recommendation No. 571  

SciTech Connect (OSTI)

The subject invention, ``A Pipe Cleaning Machine,`` known as ``Buffy,`` is a device that strips pipeline of its coating down to the metal. The apparatus consists of a series of motor-driven metal brushes mounted on a ring structure that fits the around the pipe`s circumference. Once stripped, the pipeline may or may not be abrasive-blasted, but is then coated and wrapped, and the trench is back-filled. Present models of the Buffy can be used on pipe up to 36`` in diameter. One of the device`s unique features is its ability to operate while the pipeline remains in service.

Bratcher, H. Jr.; Hinick, M.B.; Balsam, J.W.

1992-06-12T23:59:59.000Z

235

Calculating limits for torsion and tensile loads on drill pipe  

SciTech Connect (OSTI)

Drill pipe used for drilling horizontal and extended reach holes experiences much higher torsional and tensile loads than normally seen while drilling vertical holes. This is particularly true for rigs with top drives vs. rigs with rotary tables. When pipe is rotated while pulling out of the hole, which is commonly done on top drive rigs, the drill pipe can experience high tensile and torsional loading simultaneously. These conditions increase the probability of overload on tool joints and require that the drill pipe and tool joint selection process include consideration of combined loading. Calculating the required drill pipe strength for vertical holes is straightforward and spelled out in Section 5 of API RP7G. In vertical hole applications, pipe is almost always selected for its tensile capacity and the torsional strength of the pipe generally does not require special consideration. In Section 4 of API Sec 7, API recommends that the tool joints have a torsional strength of 80% of the pipe`s torsional strength; this is usually adequate. The torsional strength and tensile strength of commonly used drill pipe and tool joint combinations are tabulated in Tables 2 through 10 of API RP7G. Appendix A.8.3 in API RP7G shows a method for plotting a graphical representation of the combined torsional and tensile operational limits of tool joints. How to calculate the limits of the drill pipe tube is shown in Appendix A.9.2. This paper defines terms and limits, and discusses building and using a diagram to determine safe loads.

Bailey, E.I. [Stress Engineering Service Inc., Houston, TX (United States); Smith, J.E. [Grant Prideco, Houston, TX (United States)

1998-02-01T23:59:59.000Z

236

Performance analysis of wick-assisted heat pipe solar collector and comparison with experimental results  

Science Journals Connector (OSTI)

The performance of heat pipe solar collector is investigated theoretically and experimentally. The system employs wick-assisted heat pipe for the heat transfer from ... pipe temperature and also the thermal effic...

E. Azad

2009-03-01T23:59:59.000Z

237

Assessment of Crack Detection in Cast Austenitic Piping Components Using Advanced Ultrasonic Methods.  

SciTech Connect (OSTI)

Studies conducted at the Pacific Northwest National Laboratory (PNNL) in Richland, Washington, have focused on developing and evaluating the reliability of nondestructive examination (NDE) approaches for inspecting coarse-grained, cast stainless steel reactor components. The objective of this work is to provide information to the United States Nuclear Regulatory Commission (NRC) on the utility, effectiveness and limitations of ultrasonic testing (UT) inspection techniques as related to the in-service inspection of primary system piping components in pressurized water reactors (PWRs). Cast stainless steel pipe specimens were examined that contain thermal and mechanical fatigue cracks located close to the weld roots and have inside/outside surface geometrical conditions that simulate several PWR primary piping configurations. In addition, segments of vintage centrifugally cast piping were also examined to understand inherent acoustic noise and scattering due to grain structures and determine consistency of UT responses from different locations. The advanced UT methods were applied from the outside surface of these specimens using automated scanning devices and water coupling. The low-frequency ultrasonic method employed a zone-focused, multi-incident angle inspection protocol (operating at 250-450 kHz) coupled with a synthetic aperture focusing technique (SAFT) for improved signal-to-noise and advanced imaging capabilities. The phased array approach was implemented with a modified instrument operating at 500 kHz and composite volumetric images of the specimens were generated. Results from laboratory studies for assessing detection, localization and sizing effectiveness are discussed in this paper.

Anderson, Michael T.; Crawford, Susan L.; Cumblidge, Stephen E.; Diaz, Aaron A.; Doctor, Steven R.

2007-01-01T23:59:59.000Z

238

CODIFICATION OF FIBER REINFORCED COMPOSITE PIPING  

SciTech Connect (OSTI)

The goal of the overall project is to successfully adapt spoolable FRP currently used in the oil industry for use in hydrogen pipelines. The use of FRP materials for hydrogen service will rely on the demonstrated compatibility of these materials for pipeline service environments and operating conditions. The ability of the polymer piping to withstand degradation while in service, and development of the tools and data required for life management are imperative for successful implementation of these materials for hydrogen pipeline. The information and data provided in this report provides the technical basis for the codification for fiber reinforced piping (FRP) for hydrogen service. The DOE has invested in the evaluation of FRP for the delivery for gaseous hydrogen to support the development of a hydrogen infrastructure. The codification plan calls for detailed investigation of the following areas: System design and applicable codes and standards; Service degradation of FRP; Flaw tolerance and flaw detection; Integrity management plan; Leak detection and operational controls evaluation; Repair evaluation. The FRP codification process started with commercially available products that had extensive use in the oil and gas industry. These products have been evaluated to assure that sufficient structural integrity is available for a gaseous hydrogen environment.

Rawls, G.

2012-10-10T23:59:59.000Z

239

Unable to allocate hugepages in running jobs  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Unable to allocate hugepages in running jobs Unable to allocate hugepages in running jobs Unable to allocate hugepages in running jobs January 14, 2013 by Helen He (0 Comments) Symptom User job sometimes get an error message similar to the following, usually at the start of a batch job, causing the job to abort: MPICH2 ERROR [Rank 7436] [job id 14638087] [Sat Jan 12 04:56:54 2013] [c11-2c1s3n1] [nid04487] - MPIU_nem_gni_get_hugepages(): Unable to mmap 4194304 bytes for file /var/lib/hugetlbfs/global/pagesize-2097152/hugepagefile.MPICH.0.5841.kvs_14638087, err Cannot allocate memory This is caused by available huge page memory being not sufficient on one or more of the allocated compute nodes. The above error happens more often with jobs using the "-ss" option for the aprun command. It is confirmed

240

SunRun Inc | Open Energy Information  

Open Energy Info (EERE)

SunRun Inc SunRun Inc Jump to: navigation, search Name SunRun Inc Address 717 Market Street Place San Francisco, California Zip 94103 Sector Solar Product Solar installer Website http://www.sunrunhome.com/ Coordinates 37.7871306°, -122.4041075° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":37.7871306,"lon":-122.4041075,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

The Economics of Steam Vs. Electric Pipe Heating  

E-Print Network [OSTI]

To properly design a pipe heating system, the basic principles of heat transfer from an insulated pipe must be understood. The three methods of heat flow are conduction, convection (both forced and natural) and radiation. The total heat loss from a...

Schilling, R. E.

242

An experimental study of heat pipe thermal management system with wet cooling method for lithium ion batteries  

Science Journals Connector (OSTI)

Abstract An effective battery thermal management (BTM) system is required for lithium-ion batteries to ensure a desirable operating temperature range with minimal temperature gradient, and thus to guarantee their high efficiency, long lifetime and great safety. In this paper, a heat pipe and wet cooling combined BTM system is developed to handle the thermal surge of lithium-ion batteries during high rate operations. The proposed BTM system relies on ultra-thin heat pipes which can efficiently transfer the heat from the battery sides to the cooling ends where the water evaporation process can rapidly dissipate the heat. Two sized battery packs, 3Ah and 8Ah, with different lengths of cooling ends are used and tested through a series high-intensity discharges in this study to examine the cooling effects of the combined BTM system, and its performance is compared with other four types of heat pipe involved BTM systems and natural convection cooling method. A combination of natural convection, fan cooling and wet cooling methods is also introduced to the heat pipe BTM system, which is able to control the temperature of battery pack in an appropriate temperature range with the minimum cost of energy and water spray.

Rui Zhao; Junjie Gu; Jie Liu

2015-01-01T23:59:59.000Z

243

CRAD, Equipment and Piping Labeling Assessment Plan | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Equipment and Piping Labeling Assessment Plan Equipment and Piping Labeling Assessment Plan CRAD, Equipment and Piping Labeling Assessment Plan Performance Objective: To verify that facility equipment and piping are labeled in a manner such that facility personnel are able to positively identify equipment they operate. To ensure that an effective labeling program is in effect to reduce operator and maintenance errors from incorrect identification of equipment, to increase training effectiveness by tracing the actual facility system as opposed to tracing its schematic, and to reduce personnel exposure to radiation and hazardous materials. This assessment provides a basis for evaluating the effectiveness of the contractor's program for labeling equipment and piping and for establishing compliance with DOE requirements.

244

Surveillance Guide - OPS 9.18 Equipment and Piping Labeling  

Broader source: Energy.gov (indexed) [DOE]

EQUIPMENT AND PIPING LABELING EQUIPMENT AND PIPING LABELING 1.0 Objective The objective of this surveillance is to verify that facility equipment and piping are labeled in a manner such that facility personnel are able to positively identify equipment they operate. This surveillance provides a basis for evaluating the effectiveness of the contractor's program for labeling equipment and piping and for establishing compliance with DOE requirements. 2.0 References 2.1 DOE 5480.19, Conduct of Operations Requirements for DOE Facilities 2.2 DOE-STD-1044-93, Guide to Good Practices for Equipment and Piping Labeling 3.0 Requirements Implemented This surveillance is conducted to implement requirements of the Functions, Requirements and Authorities Manual, Section 20,

245

Uncertainty analysis for probabilistic pipe fracture evaluations in LBB applications  

SciTech Connect (OSTI)

During the NRC`s Short Cracks in Piping and Piping Welds Program at Battelle, a probabilistic methodology was developed to conduct fracture evaluations of circumferentially cracked pipes for application to leak-rate detection. Later, in the IPIRG-2 program, several parameters that may affect leak-before-break and other pipe flaw evaluations were identified. This paper presents new results from several uncertainty analyses to evaluate the effects of normal operating stresses, normal plus safe-shutdown earthquake stresses, off-centered cracks, restraint of pressure-induced bending, and dynamic and cyclic loading rates on the conditional failure probability of pipes. systems in BWR and PWR. For each parameter, the sensitivity to conditional probability of failure and hence, its importance on probabilistic leak-before-break evaluations were determined.

Rahman, S.; Ghadiali, N.; Wilkowski, G.

1997-04-01T23:59:59.000Z

246

Heat pipe cooling for scramjet engines. Final report  

SciTech Connect (OSTI)

Liquid metal heat pipe cooling systems have been investigated for the combustor liner and engine inlet leading edges of scramjet engines for a missile application. The combustor liner is cooled by a lithium-TZM molybdenum annular heat pipe, which incorporates a separate lithium reservoir. Heat is initially absorbed by the sensible thermal capacity of the heat pipe and liner, and subsequently by the vaporization and discharge of lithium to the atmosphere. The combustor liner temperature is maintained at 3400 F or less during steady-state cruise. The engine inlet leading edge is fabricated as a sodium-superalloy heat pipe. Cooling is accomplished by radiation of heat from the aft surface of the leading edge to the atmosphere. The leading edge temperature is limited to 1700 F or less. It is concluded that heat pipe cooling is a viable method for limiting scramjet combustor liner and engine inlet temperatures to levels at which structural integrity is greatly enhanced.

Silverstein, C.C.

1986-12-01T23:59:59.000Z

247

Acoustic quality factor and energy losses in cylindrical pipes  

Science Journals Connector (OSTI)

The quality factor Q of a damped oscillator equals 2? times the ratio of stored energy to the energy dissipated per cycle. This makes Q a sensitive probe of energy losses. Using modest equipment we measured the acoustical Q for a set of cylindrical pipes having the same resonant frequency but different diameters D. The graph of Q vs D could be well fitted with two parameters one of which corresponds to energy loss via radiation from the ends of the pipe and the other to thermal and viscous losses very close to the pipe wall. The wall loss parameter was quite constant no matter where the pipes were located but the radiative loss parameter varied significantly with location inside a room suggesting that room reflections affected the sound radiated from the pipe. This study offers valuable insights at no great expense and could be the basis of an upper-division undergraduatelaboratory experiment.

Michael J. Moloney; Daniel L. Hatten

2001-01-01T23:59:59.000Z

248

Department of Energy to Provide Supercomputing Time to Run NOAA...  

Energy Savers [EERE]

Department of Energy to Provide Supercomputing Time to Run NOAA's Climate Change Models Department of Energy to Provide Supercomputing Time to Run NOAA's Climate Change Models...

249

Contaminating Fresh Waters (Florida)  

Broader source: Energy.gov [DOE]

It is illegal to discharge any dyestuff, coal tar, oil, sawdust, poison, or deleterious substances into any fresh running waters in Florida in quantities sufficient to injure, stupefy, or kill fish...

250

Electric Storage Water Heaters  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

energy can be wasted even when a hot water tap isn't running. This is called standby heat loss. The American Council for an Energy Efficient Economy provides a helpful...

251

Review of the Savannah River Site, Salt Waste Processing Facility, Construction Quality of Piping and Pipe Supports, September 2012  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Savannah River Site, Salt Waste Processing Savannah River Site, Salt Waste Processing Facility, Construction Quality of Piping & Pipe Supports September 2012 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose................................................................................................................................................. 1 2.0 Scope.................................................................................................................................................... 1 3.0 Background .......................................................................................................................................... 1

252

Review of the Savannah River Site, Salt Waste Processing Facility, Construction Quality of Piping and Pipe Supports, September 2012  

Broader source: Energy.gov (indexed) [DOE]

Savannah River Site, Salt Waste Processing Savannah River Site, Salt Waste Processing Facility, Construction Quality of Piping & Pipe Supports September 2012 Office of Safety and Emergency Management Evaluations Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy Table of Contents 1.0 Purpose................................................................................................................................................. 1 2.0 Scope.................................................................................................................................................... 1 3.0 Background .......................................................................................................................................... 1

253

Water-Heating Dehumidifier  

Energy Innovation Portal (Marketing Summaries) [EERE]

A small appliance developed at ORNL dehumidifies air and then recycles heat to warm water in a water heater. The device circulates cool, dry air in summer and warm air in winter. In addition, the invention can cut the energy required to run a conventional water heater by an estimated 50 per cent....

2010-12-08T23:59:59.000Z

254

How to Run DomainParser  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Run DomainParser Run DomainParser The structure for partition needs to be prepared in the PDB format. In most cases, running DomainParser using defaults should give satisfactory partitions. However, several options offered in DomainParser can provide a partition that a user desires or correct some overcut/undercut partitions. Here, we use a PDB file 1atna.pdb as an example to show how to use the DomainParser program. Run DomainParser using defaults: domainparser 1atna.pdb The output shows the partition for each domain in terms of ranges of residue numbers: 4 domains have been found for 1atna: Domain 1 : 34-96. Domain 2 : 181-272. Domain 3 : 148-180; 273-336. Domain 4 : 0-33; 97-147; 337-372. The program also generates a new file 1atna_dom.pdb, with the "temperature factor" column (column 61-66 of an "ATOM" entry) showing domain numbers. A

255

SHORT-RUN MONEY DEMAND Laurence Ball  

E-Print Network [OSTI]

SHORT-RUN MONEY DEMAND Laurence Ball Johns Hopkins University August 2002 I am grateful with Goldfeld's partial adjustment model. A key innovation is the choice of the interest rate in the money on "near monies" -- close substitutes for M1 such as savings accounts and money market mutual funds

Niebur, Ernst

256

Density Perturbations for Running Cosmological Constant  

E-Print Network [OSTI]

The dynamics of density and metric perturbations is investigated for the previously developed model where the decay of the vacuum energy into matter (or vice versa) is due to the renormalization group (RG) running of the cosmological constant (CC) term. The evolution of the CC depends on the single parameter \

Julio C. Fabris; Ilya L. Shapiro; Joan Sola

2007-01-26T23:59:59.000Z

257

Characterization of Pipes, Drain Lines, and Ducts using the Pipe Explorer System  

Office of Scientific and Technical Information (OSTI)

MC/30172-97/C0803 MC/30172-97/C0803 Title: Characterization of Pipes, Drain Lines, and Ducts Using the Pipe Explorer System TM Authors: C.D. Cremer D.T. Kendrick E. Cramer Contractor: Science and Engineering Associates, Inc. 6100 Uptown Blvd, NE Albuquerque, NM 87100 Contract Number: DE-AC21-93MC30172 Conference: Industry Partnerships to Deploy Environmental Technology Conference Location: Morgantown, West Virginia Conference Dates: October 22-24, 1996 Conference Sponsor: Morgantown Energy Technology Center Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any

258

Brackish groundwater as an alternative source of cooling water for nuclear power plants in Israel  

Science Journals Connector (OSTI)

Because of a high population density in the coastal plain, any future nuclear power plants will be located in the sparsely ... no surface water, the only alternatives to cooling water are piped-in Mediterranean. ...

A. Arad; A. Olshina

1984-01-01T23:59:59.000Z

259

INSPECTION OF FUSION JOINTS IN PLASTIC PIPE  

SciTech Connect (OSTI)

The standard method of joining plastic pipe in the field is the butt fusion process. As in any pipeline application, joint quality greatly affects overall operational safety of the system. Currently no simple, reliable, cost effective method of assessing the quality of fusion joints in the field exists. Visual examination and pressure testing are current non-destructive approaches, which do not provide any assurance about the long-term pipeline performance. This project will develop, demonstrate, and validate an in-situ non-destructive inspection method for butt fusion joints in gas distribution plastic pipelines. The inspection system will include a laser based image-recognition system that will automatically generate and interpret digital images of pipe joints and assign them a pass/fail rating, which eliminates operator bias in evaluating joint quality. A Weld Zone Inspection Method (WZIM) is being developed in which local heat is applied to the joint region to relax the residual stresses formed by the original joining operation and reveal the surface condition of the joint. In cases where the joint is not formed under optimal conditions, and the intermolecular forces between contacting surfaces are not strong enough, the relaxation of macromolecules in the surface layer causes the material to pull back, revealing a fusion line. If the joint is sound, the bond line image does not develop. To establish initial feasibility of the approach, welds were performed under standard and non-standard conditions. These welds were subjected to the WZIM and tensile testing. There appears to be a direct correlation between the WZIM and tensile testing results. Although WZIM appears to be more sensitive than tensile testing can verify, the approach appears valid.

Alex Savitski; Connie Reichert; John Coffey

2004-07-13T23:59:59.000Z

260

Electrical detection of liquid lithium leaks from pipe joints  

SciTech Connect (OSTI)

A test stand for flowing liquid lithium is under construction at Princeton Plasma Physics Laboratory. As liquid lithium reacts with atmospheric gases and water, an electrical interlock system for detecting leaks and safely shutting down the apparatus has been constructed. A defense in depth strategy is taken to minimize the risk and impact of potential leaks. Each demountable joint is diagnosed with a cylindrical copper shell electrically isolated from the loop. By monitoring the electrical resistance between the pipe and the copper shell, a leak of (conductive) liquid lithium can be detected. Any resistance of less than 2 k? trips a relay, shutting off power to the heaters and pump. The system has been successfully tested with liquid gallium as a surrogate liquid metal. The circuit features an extensible number of channels to allow for future expansion of the loop. To ease diagnosis of faults, the status of each channel is shown with an analog front panel LED, and monitored and logged digitally by LabVIEW.

Schwartz, J. A., E-mail: jschwart@pppl.gov; Jaworski, M. A.; Mehl, J.; Kaita, R.; Mozulay, R. [Princeton Plasma Physics Laboratory, Princeton, New Jersey 08543-0451 (United States)

2014-11-15T23:59:59.000Z

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

Capabilities of Ultrasonic Techniques for the Far-Side Examination of Austenitic Stainless Steel Piping Welds.  

SciTech Connect (OSTI)

A study was conducted to assess the ability of advanced ultrasonic techniques to detect and accurately determine the size of flaws from the far-side of wrought austenitic piping welds. Far-side inspections of nuclear system piping welds are currently performed on a best effort basis and do not conform to ASME Code Section XI Appendix VIII performance demonstration requirements. For this study, four circumferential welds in 610mm diameter, 36mm thick ASTM A-358, Grade 304 vintage austenitic stainless steel pipe were examined. The welds were fabricated with varied welding parameters; both horizontal and vertical pipe orientations were used, with air and water backing, to simulate field welding conditions. A series of saw cuts, electro-discharge machined (EDM) notches, and implanted fatigue cracks were placed into the heat affected zones of the welds. The saw cuts and notches ranged in depth from 7.5% to 28.4% through-wall. The implanted cracks ranged in depth from 5% through-wall to 64% through-wall. The welds were examined with phased array technology at 2.0 MHz, and with low-frequency/Synthetic Aperture Focusing Technique (SAFT) methods in the 250-400 kHz regime. These results were compared to conventional ultrasonic techniques as a baseline. The examinations showed that both phased-array and low-frequency/SAFT were able to detect and accurately length-size, but not depth size, the notches and flaws through the welds. The ultrasonic results were insensitive to the different welding techniques used in each weld.

Anderson, Michael T.; Diaz, Aaron A.; Cumblidge, Stephen E.; Doctor, Steven R.

2006-02-01T23:59:59.000Z

262

Natural Gas Pipe Line Companies (Connecticut) | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Pipe Line Companies (Connecticut) Pipe Line Companies (Connecticut) Natural Gas Pipe Line Companies (Connecticut) < Back Eligibility Agricultural Commercial Construction Fed. Government Fuel Distributor General Public/Consumer Industrial Installer/Contractor Institutional Investor-Owned Utility Local Government Low-Income Residential Multi-Family Residential Municipal/Public Utility Nonprofit Residential Retail Supplier Rural Electric Cooperative Schools State/Provincial Govt Systems Integrator Transportation Tribal Government Utility Program Info State Connecticut Program Type Siting and Permitting Provider Public Utilities Regulatory Authority These regulations list standards and considerations for the design, construction, compression, metering, operation, and maintenance of natural gas pipelines, along with procedures for records, complaints, and service

263

Capacitance Probe for Detection of Anomalies in Nonmetallic Plastic Pipe  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Capacitance Probe for Detection of Anomalies in Capacitance Probe for Detection of Anomalies in Nonmetallic Plastic Pipe Opportunity The Department of Energy's National Energy Technology Laboratory (NETL) is seeking collaborative research and licensing partners interested in implementing United States Patent Number 7,839,282 entitled "Capacitance Probe for Detection of Anomalies in Nonmetallic Plastic Pipe." Disclosed in this patent is an analysis of materials using a capacitive sensor to detect anomalies in nonmetallic plastic pipe through comparison of measured capacitances. The capacitive sensor is used in conjunction with a capacitance measurement device, a location device, and a processor to generate a capacitance versus location output for the detection and localization of anomalies

264

Phased?Array Focusing Potential in Pipe with Viscoelastic Coating  

Science Journals Connector (OSTI)

This work investigates the effectiveness of traditional guided?wave focusing techniques in piping with viscoelastic coating. Focusing results for an uncoated pipe are compared to that of pipe with a fusion?bonded epoxy coating a coal?tar mastic coating a coal?tar epoxy coating a coal?tar tape coating a wax coating and an enamel coating. Experimental results are compared to computationally derived models. Results show that for most coating types focusing can be achieved without special consideration of the coating. This is significant in that it demonstrates the immediate applicability of traditional focusing techniques to coated pipeline.

J. K. Van Velsor; L. Zhang; L. J. Breon; J. L. Rose

2007-01-01T23:59:59.000Z

265

EnergyPlus Run Time Analysis  

E-Print Network [OSTI]

PACKAGEDTERMINAL:HEATPUMP:AIRTOAIR, Unit Ventilator, andCONTROLLER:SIMPLE, UnitarySystem:HeatPump:WaterToAir,and UnitarySystem:HeatPump:WaterToAir. These convergence

Hong, Tianzhen

2009-01-01T23:59:59.000Z

266

The CDF Run IIb Silicon Detector  

SciTech Connect (OSTI)

Fermilab plans to deliver 5-15 fb{sup -1} of integrated luminosity to the CDF and D0 experiments. The current inner silicon detectors at CDF (SVXIIa and L00) will not tolerate the radiation dose associated with high luminosity running and will need to be replaced. A new readout chip (SVX4) has been designed in radiation-hard 0.25 {micro}m CMOS technology. Single sided sensors are arranged in a compact structure, called a stave, with integrated readout and cooling systems. This paper describes the general design of the Run IIb system, testing results of prototype electrical components (staves), and prototype silicon sensor performance before and after irradiation.

M. Aoki; N. Bacchetta; S. Behari et al.

2004-02-25T23:59:59.000Z

267

Evaluation of the 1999 Predictions of the Run-Timing of Wild Migrant Yearling Chinook  

E-Print Network [OSTI]

Quality at Multiple Locations on the Snake and Columbia Rivers using CRiSP/RealTime Prepared by: W timing, water temperature, total dissolved gas, flow, and spill at various dams. CRiSP model runsSP's predictive powers are maximized as well. RealTime and CRiSP researchers are developing strate- gies

Washington at Seattle, University of

268

Pantex erects nearly 400 piping metal supports | National Nuclear Security  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

erects nearly 400 piping metal supports | National Nuclear Security erects nearly 400 piping metal supports | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Pantex erects nearly 400 piping metal supports Pantex erects nearly 400 piping metal supports Posted By Office of Public Affairs Workers at the Pantex Plant are in the process of erecting nearly 400 metal

269

Pantex erects nearly 400 piping metal supports | National Nuclear Security  

National Nuclear Security Administration (NNSA)

erects nearly 400 piping metal supports | National Nuclear Security erects nearly 400 piping metal supports | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Pantex erects nearly 400 piping metal supports Pantex erects nearly 400 piping metal supports Posted By Office of Public Affairs Workers at the Pantex Plant are in the process of erecting nearly 400 metal

270

Compressed air piping, 241-SY-101 hydraulic pump retrieval trailer  

SciTech Connect (OSTI)

The following Design Analysis was prepared by the Westinghouse Hanford Company to determine pressure losses in the compressed air piping installed on the hydraulic trailer for the 241-SY-101 pump retrieval mission.

Wilson, T.R.

1994-12-12T23:59:59.000Z

271

SEISMIC CAPACITY OF THREADED, BRAZED AND GROOVED PIPE JOINTS  

Broader source: Energy.gov [DOE]

Seismic Capacity of Threaded, Brazed and Grooved Pipe Joints Brent Gutierrez, PhD, PE George Antaki, PE, F.ASME DOE NPH Conference October 25-26, 2011

272

Composite drill pipe and method for forming same  

DOE Patents [OSTI]

A lightweight and durable drill pipe string capable of short radius drilling formed using a composite pipe segment formed to include tapered wall thickness ends that are each defined by opposed frustoconical surfaces conformed for self-aligning receipt and intimate bonding contact within an annular space between corresponding surfaces of a coaxially nested set of metal end pieces and a set of nonconductive sleeves. The distal peripheries of the nested end pieces and sleeves are then welded to each other and the sandwiched and bonded portions are radially pinned. The composite segment may include imbedded conductive leads and the axial end portions of the end pieces are shaped to form a threaded joint with the next pipe assembly that includes contact rings in the opposed surfaces of the pipe joint for contact together.

Leslie, James C; Leslie, II, James C; Heard, James; Truong, Liem V; Josephson, Marvin

2012-10-16T23:59:59.000Z

273

Probabilistic assessment of critically flawed LMFBR PHTS piping elbows  

SciTech Connect (OSTI)

One of the important functions of the Primary Heat Transport System (PHTS) of a large Liquid Metal Fast Breeder Reactor (LMFBR) plant is to contain the circulating radioactive sodium in components and piping routed through inerted areas within the containment building. A significant possible failure mode of this vital system is the development of cracks in the piping components. This paper presents results from the probabilistic assessment of postulated flaws in the most-critical piping elbow of each piping leg. The criticality of calculated maximum sized flaws is assessed against an estimated material fracture toughness to determine safety factors and failure probability estimates using stress-strength interference theory. Subsequently, a different approach is also employed in which the randomness of the initial flaw size and loading are more-rigorously taken into account. This latter approach yields much smaller probability of failure values when compared to the stress-strength interference analysis results.

Balkey, K.R.; Wallace, I.T.; Vaurio, J.K.

1982-01-01T23:59:59.000Z

274

The nickel pipes of Vlakfontein and vicinity, western Transvaal  

Science Journals Connector (OSTI)

...feet of pneumaticand diamond drilling) on Vlaldontein and vicinity...the centrallylocatedVredefort dome within the Witwatersrand Basin...NICKEL PIPES' OF VLAKFONTEIN TAtum 4. Microscopicand Microprobe...ft. The orebody,proved by drilling,haddimensionsof about200...

C. F. Vermaak

275

Selection of minimum earthquake intensity in calculating pipe failure probabilities  

SciTech Connect (OSTI)

In a piping reliability analysis, it is sometimes necessary to specify a minimum ground motion intensity, usually the peak acceleration, below which the ground motions are not considered as earthquakes and, hence, are neglected. The calculated probability of failure of a piping system is dependent on this selected minimum earthquake intensity chosen for the analysis. A study was conducted to determine the effects of the minimum earthquake intensity on the probability of pipe failure. The results indicated that the probability of failure of the piping system is not very sensitive to the variations of the selected minimum peak ground acceleration. However, it does have significant effects on various scenarios that make up the system failure.

Lo, T.Y.

1985-01-01T23:59:59.000Z

276

Solid0Core Heat-Pipe Nuclear Batterly Type Reactor  

SciTech Connect (OSTI)

This project was devoted to a preliminary assessment of the feasibility of designing an Encapsulated Nuclear Heat Source (ENHS) reactor to have a solid core from which heat is removed by liquid-metal heat pipes (HP).

Ehud Greenspan

2008-09-30T23:59:59.000Z

277

The effect of pipe spacing on marine pipeline scour  

E-Print Network [OSTI]

THE EFFECT OF PIPE SPACING ON MARINE PIPELINE SCOUR A Thesis by JOSEPH HENRY WESTERHORSTMANN Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE... December 1988 Major Subject: Ocean Engineering THE EFFECT OF PIPE SPACING ON MARINE PIPELINE SCOUR A Thesis by JOSEPH HENRY WESTERHORSTMANN Approved as to style and content by: r L. Machemehl (Chair of Committee) Robert E. Randall (Member) W yne...

Westerhorstmann, Joseph Henry

2012-06-07T23:59:59.000Z

278

Membrane heat pipe development for space radiator applications  

SciTech Connect (OSTI)

A self-deploying membrane heat pipe (SMHP) is being designed and fabricated to operate in an in-cabin experiment aboard a STS flight. The heat pipe comprises a mylar membrane with a woven fabric arterial wick and R-11 as the working fluid. Preliminary results indicate that this SMHP design will successfully expand and retract in response to an applied heat load; the retraction force is provided by a constant force spring.

Woloshun, K.; Merrigan, M.

1986-01-01T23:59:59.000Z

279

Stability analysis of buried flexible pipes: a biaxial buckling equation  

E-Print Network [OSTI]

STABILITY ANALYSIS OF BURIED FLEXIBLE PIPES: A BIAXIAL BUCKLING EQUATION A Thesis by MELISSA TUYET-MAI CHAU Submitted to the Office of Graduate Studies of Texas AkM University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE May 1990 Major Subject: Civil Engineering STABLILITY ANALYSIS OF BURIED FLEXIBLE PIPES: A BIAXIAL BUCKLING EQUATION A Thesis by MELISSA TUYET-MAI CHAU Approved as to style and content by: r. obert L. Lytt n (Chair of Committee...

Chau, Melissa Tuyet-Mai

2012-06-07T23:59:59.000Z

280

50-Plus Ways to Be Water Smart 1. If your local water utility offers water-saving incentives or in-home water audits, take advantage  

E-Print Network [OSTI]

50-Plus Ways to Be Water Smart BEHAVIORS 1. If your local water utility offers water-saving incentives or in-home water audits, take advantage of these programs. 2. Don't let water run while brushing your teeth, washing your face, or shaving. 3. Never pour water down the drain when there may be another

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Decontamination Process of Internal Part Pipes - 13442  

SciTech Connect (OSTI)

The Marcoule Site, created in 1955 is one of the first nuclear sites in France. It combines the activities of the Research Centre of the French Atomic Energy Commission (CEA) and AREVA industrial operations. Today, a large part of the operations on this site consists of the cleaning and the dismantling of nuclear Installations, once the end of their life cycle has been reached. An example can be the reprocessing plant UP1. This unit, started in 1958 has been stopped in 1997 and its dismantling started quickly thereafter. Technical challenges of the UP1 dismantling are mainly linked to a very high risk of exposure due to a large variety of contaminated equipments and residuals of fission products, potential sources of irradiation. The dismantling of Hall 71 is a typical example of such challenge. This paper will present a solution developed by AREVA Clean-Up business unit, in collaboration with COFIM Industry, to remove contamination incrusted inside the pipes before starting the cutting operations, thus reducing irradiation risk. (authors)

Ladet, X.; Sozet, O.; Cabanillas, P.; Macia, G. [STMI, Site de MARCOULE - Batiment 423 - 30204 Bagnols-sur-Ceze (France)] [STMI, Site de MARCOULE - Batiment 423 - 30204 Bagnols-sur-Ceze (France); Moggia, F.; Damerval, F. [STMI, 1 route de la Noue 91196 - Gif-sur-Yvette (France)] [STMI, 1 route de la Noue 91196 - Gif-sur-Yvette (France)

2013-07-01T23:59:59.000Z

282

Particle transport in turbulent curved pipe flow  

E-Print Network [OSTI]

Direct numerical simulations (DNS) of particle-laden turbulent flow in straight, mildly curved and strongly bent pipes are performed in which the solid phase is modelled as small heavy spherical particles. The objective is to examine the effect of the curvature on particle transport and accumulation, in particular how the turbophoretic drift of the particles is affected by weak and strong secondary motions of the carrier phase and geometry-induced centrifugal forces. A total of seven populations of dilute particles with different Stokes numbers, one-way coupled with their carrier phase, are simulated. Even a slight non-zero curvature in the flow configuration shows a strong impact on the particle dynamics. Near-wall helicoidal particle streaks are observed in the curved configurations with their inclination varying with the strength of the secondary motion of the carrier phase. A reflection layer, as previously observed in particle laden turbulent S-shaped channels, is also apparent in the strongly curved pip...

Noorani, Azad; Brandt, Luca; Schlatter, Philipp

2015-01-01T23:59:59.000Z

283

Tankless Coil and Indirect Water Heater Basics | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Coil and Indirect Water Heater Basics Coil and Indirect Water Heater Basics Tankless Coil and Indirect Water Heater Basics August 19, 2013 - 3:03pm Addthis Illustration of a tankless coil water heater. The heater is box-shaped, and has two pipes sticking out one end: one a cold water inlet, and one a hot water outlet. These pipes lead into the heater to a cylindrical coil called a heat exchanger. Long tubes surrounding the heat exchanger are labeled the heated water jacket. At the bottom of the box is a row of small flames, called the boiler heat source. Tankless coil and indirect water heaters use a home or building's space heating system to heat water as part of an integrated or combination water and space heating system. How Tankless Coil and Indirect Water Heaters Work A tankless coil water heater uses a heating coil or heat exchanger

284

Running dry at the power plant  

SciTech Connect (OSTI)

In the future, competition for water will require electricity generators in the United States to address conservation of fresh water. There are a number of avenues to consider. One is to use dry-cooling and dry-scrubbing technologies. Another is to find innovative ways to recycle water within the power plant itself. A third is to find and use alternative sources of water, including wastewater supplies from municipalities, agricultural runoff, blackish groundwater, or seawater. Dry technologies are usually more capital intensive and typically exact a penalty in terms of plant performance, which in turn raises the cost of power generation. On the other hand, if the cost of water increases in response to greater demand, the cost differences between dry and wet technologies will be reduced. EPRI has a substantial R & D programme evaluating new water-conserving power plant technologies, improving dry and hybrid cooling technologies, reducing water losses in cooling towers, using degraded water sources and developing resource assessment and management decision support tools. 5 refs., 10 figs.

Barker, B.

2007-07-01T23:59:59.000Z

285

Experimental investigation of a pulsating heat pipe for hybrid vehicle applications  

Science Journals Connector (OSTI)

This paper deals with the experimental results of an unlooped pulsating heat pipe (PHP) developed and tested in an electronic thermal management field with hybrid vehicle applications in mind. The 2.5mm inner tube diameter device was cooled by an air heat exchanger to replicate the environment of a vehicle. In order to characterize this pulsating heat pipe, four working fluids have been tested. They are acetone, methanol, water, and n-pentane, with applied thermal power ranging from 25W to 550W, air temperature ranging from 10C to 60C and air velocity ranging from 0.25ms?1 to 2ms?1. Three inclinations have also been tested according to their horizontal positions:+45 (condenser above the evaporator), 0 and?45 (condenser below the evaporator). Among the different results, some of the most revelatory were obtained with regard to unfavourable inclination (?45), for which the performances were very interesting considering a terrestrial application. On the other hand, one also observed low temperature limitations for water as a working fluid and degradation of performances for n-pentane tested at 60C air temperature. On an overall basis, however, it should be noted that the PHP functioned with high reliability and reproducibility and without any failure during the start-up or working stage.

G. Burban; V. Ayel; A. Alexandre; P. Lagonotte; Y. Bertin; C. Romestant

2013-01-01T23:59:59.000Z

286

Results from dynamic tests and analyses of a medium diameter LMFBR piping system  

SciTech Connect (OSTI)

This paper presents results and observations from dynamic tests and analyses performed on a 0.20 m (8 in.) diameter, thin walled piping system. The piping system is a scaled representation of a Liquid Metal Fast Breeder Reactor (LMFBR) large diameter piping loop. Prototypic piping restraints were employed, including mechanical snubbers, rigid struts, pipe hangers and non-integral pipe clamps. Snapback, sine-sweep and seismic tests were performed for various restraint configurations and piping conditions. The test results are compared to analytical predictions for verification of the methods and models used in the seismic design of LMFBR piping systems. Test program conclusions and general recommendations for piping seismic analyses are presented along with a discussion of test and analysis results.

Schott, G.A.; Heberling, C.F.; Hulbert, G.M.

1984-06-01T23:59:59.000Z

287

Results from dynamic tests and analyses of a medium diameter LMFBR piping system  

SciTech Connect (OSTI)

This paper presents results and observations from dynamic tests and analyses performed on an 8-in. (0.20-m) diameter, thin-walled piping system. The piping system is a scaled representation of a Liquid Metal Fast Breeder Reactor (LMFBR) large diameter piping loop. Prototypic piping restraints were employed, including mechanical snubbers, rigid struts, pipe hangers and nonintegral pipe clamps. Snapback, sine-sweep and seismic tests were performed for various restraint configurations and piping conditions. The test results are compared to analytical predictions for verification of the methods and models used in the seismic design of LMFBR piping systems. Test program conclusions and general recommendations for piping seismic analyses are presented along with a discussion of test and analysis results.

Schott, G.A.; Hulbert, G.M.; Heberling, C.F. II

1986-08-01T23:59:59.000Z

288

SRS Recovery Act Completes Major Lower Three Runs Project Cleanup |  

Broader source: Energy.gov (indexed) [DOE]

SRS Recovery Act Completes Major Lower Three Runs Project Cleanup SRS Recovery Act Completes Major Lower Three Runs Project Cleanup SRS Recovery Act Completes Major Lower Three Runs Project Cleanup American Recovery and Reinvestment Act can now claim that 85 percent of the Savannah River Site (SRS) has been cleaned up with the recent completion of the Lower Three Runs (stream) Project. Twenty miles long, Lower Three Runs leaves the main body of the 310-square mile site and runs through parts of Barnwell and Allendale Counties until it flows into the Savannah River. Government property on both sides of the stream acts as a buffer as it runs through privately-owned property. Completing this project reduces the site's footprint by another 10 percent. SRS Recovery Act Completes Major Lower Three Runs Project Cleanup More Documents & Publications

289

SRS Recovery Act Completes Major Lower Three Runs Project Cleanup |  

Broader source: Energy.gov (indexed) [DOE]

SRS Recovery Act Completes Major Lower Three Runs Project Cleanup SRS Recovery Act Completes Major Lower Three Runs Project Cleanup SRS Recovery Act Completes Major Lower Three Runs Project Cleanup American Recovery and Reinvestment Act can now claim that 85 percent of the Savannah River Site (SRS) has been cleaned up with the recent completion of the Lower Three Runs (stream) Project. Twenty miles long, Lower Three Runs leaves the main body of the 310-square mile site and runs through parts of Barnwell and Allendale Counties until it flows into the Savannah River. Government property on both sides of the stream acts as a buffer as it runs through privately-owned property. Completing this project reduces the site's footprint by another 10 percent. SRS Recovery Act Completes Major Lower Three Runs Project Cleanup More Documents & Publications

290

New Jersey: Atlantic City Jitneys Running on Natural Gas | Department...  

Broader source: Energy.gov (indexed) [DOE]

New Jersey: Atlantic City Jitneys Running on Natural Gas New Jersey: Atlantic City Jitneys Running on Natural Gas November 6, 2013 - 12:00am Addthis In 2009, the New Jersey Clean...

291

Illinois: Ozinga Concrete Runs on Natural Gas and Opens Private...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Illinois: Ozinga Concrete Runs on Natural Gas and Opens Private Station Illinois: Ozinga Concrete Runs on Natural Gas and Opens Private Station November 6, 2013 - 12:00am Addthis...

292

Alcator C-MOD Runs for CY 2014  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Runs for CY 2014 Administer Run Database Select Calendar Year 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992...

293

The LBB methodology application results performed on the safety related piping of NPP V-1 in Jaslovske Bohunice  

SciTech Connect (OSTI)

A broad overview of the leak before break (LBB) application to the Slovakian V-1 nuclear power plant is presented in the paper. LBB was applied to the primary cooling circuit and surge lines of both WWER 440 type units, and also used to assess the integrity of safety related piping in the feed water and main steam systems. Experiments and calculations performed included analyses of stresses, material mechanical properties, corrosion, fatigue damage, stability of heavy component supports, water hammer, and leak rates. A list of analysis results and recommendations are included in the paper.

Kupca, L.; Beno, P. [Nuclear Power Plants Research Institute, Trnava (Slovakia)

1997-04-01T23:59:59.000Z

294

AN ULTRASONIC PHASED ARRAY EVALUATION OF INTERGRANULAR STRESS CORROSION CRACK (IGSCC) DETECTION IN AUSTENITIC STAINLESS STEEL PIPING WELDS  

SciTech Connect (OSTI)

Research is being conducted for the U.S. Nuclear Regulatory Commission at the Pacific Northwest National Laboratory to assess the effectiveness and reliability of advanced nondestructive examination (NDE) methods for the inspection of light water reactor (LWR) components and challenging material/component configurations. This study assessed the effectiveness of far-side inspections on wrought stainless steel piping with austenitic welds, as found in thin-walled, boiling water reactor (BWR) component configurations, for the detection and characterization of intergranular stress corrosion cracks (IGSCC).

Diaz, Aaron A.; Anderson, Michael T.; Cinson, Anthony D.; Crawford, Susan L.; Cumblidge, Stephen E.

2010-07-22T23:59:59.000Z

295

Disco: Running Commodity Operating Systems on Scalable Multiprocessors  

E-Print Network [OSTI]

Disco: Running Commodity Operating Systems on Scalable Multiprocessors EDOUARD BUGNION, SCOTT of extending modern operating systems to run efficiently on large-scale shared-memory multiprocessors without monitors. We use virtual machines to run multiple commodity operating systems on a scalable multiproces

Bridges, Patrick

296

Meshless Computation of Water Hammer Arris S. TIJSSELING (corresponding author)  

E-Print Network [OSTI]

of water-hammer events is usually based on one-dimensional mathematical models. Two equations representing are necessary, and these necessities introduce error. This paper presents a different way of water-hammer for frictionless water-hammer. Approximate solutions are obtained when the distributed friction in individual pipes

Eindhoven, Technische Universiteit

297

Shaping the Future of Water and Wastewater Services  

E-Print Network [OSTI]

Shaping the Future of Water and Wastewater Services Jim Conlin Acting GM Long Term Asset Strategy works · 1400 Service reservoirs · >600 Pumping stations · 47,000kms Water pipes Wastewater Assets at an individual or a group of assets #12;Vision AM Strategy Wastewater Pan Scotland Strategy Bathing Waters

Painter, Kevin

298

Have You Looked at Your Pipes Lately? | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Have You Looked at Your Pipes Lately? Have You Looked at Your Pipes Lately? Have You Looked at Your Pipes Lately? March 14, 2011 - 1:27pm Addthis Elizabeth Spencer Communicator, National Renewable Energy Laboratory You know, it doesn't matter that some of you are probably already thinking about spring. It doesn't matter that the bulk of winter is over for a lot of you. I'm going to say this anyway, because sometime, someday, it might be useful. Or, well, it might not be if you live in Florida. But for the rest of you, I will repeat this suggestion: Check the insulation on your pipes! You see, early this February we had a nasty bit of weather here in Colorado. One day the low was somewhere near -15°F, and the high was a balmy -2°F. The next day, when it reached a scalding 6-or-so degrees, a pipe in my apartment exploded.

299

Fabrication Flaw Density and Distribution in Piping Weldments  

SciTech Connect (OSTI)

The U.S. Nuclear Regulatory Commission supported the Pacific Northwest National Laboratory (PNNL) to develop empirical data on the density and distribution of fabrication flaws in nuclear reactor components. These data are needed to support probabilistic fracture mechanics calculations and studies on component structural integrity. PNNL performed nondestructive examination inspections and destructive testing on archived piping welds to determine the fabrication flaw size and distribution characteristics of the flaws in nuclear power plant piping weldments. Eight different processes and product forms in piping weldments were studied including wrought stainless steel and dissimilar metal weldments. Parametric analysis using an exponential fit was performed on the data. Results were created as a function of the through-wall size of the fabrication flaws as well as the length distribution. The results are compared and contrasted with those developed for reactor pressure vessel processes and product forms. The most significant findings were that the density of fabrication flaws versus through-wall size was higher in piping weldments than that for the reactor pressure vessel weldments, and the density of fabrication flaws versus through-wall size in both reactor pressure vessel weld repairs and piping weldments were greater than the density in the original weldments. Curves showing these distributions are presented.

Doctor, Steven R.

2009-09-01T23:59:59.000Z

300

Running Line-Haul Trucks on Ethanol  

Alternative Fuels and Advanced Vehicles Data Center [Office of Energy Efficiency and Renewable Energy (EERE)]

I I magine driving a 55,000-pound tractor- trailer that runs on corn! If you find it difficult to imagine, you can ask the truck drivers for Archer Daniels Midland (ADM) what it's like. For the past 4 years, they have been piloting four trucks powered by ethyl alcohol, or "ethanol," derived from corn. Several advantages to operating trucks on ethanol rather than on conventional petro- leum diesel fuel present themselves. Because ethanol can be produced domestically, unlike most of our petroleum supply, the price and supply of ethanol is not subject to the whims of potentially unstable foreign governments. And domestic production translates into domestic jobs. In addition, ethanol has the potential to reduce harmful emissions, such as particulate matter and oxides of nitrogen

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Technical Letter Report, An Evaluation of Ultrasonic Phased Array Testing for Reactor Piping System Components Containing Dissimilar Metal Welds, JCN N6398, Task 2A  

SciTech Connect (OSTI)

Research is being conducted for the U.S. Nuclear Regulatory Commission at the Pacific Northwest National Laboratory to assess the effectiveness and reliability of advanced nondestructive examination (NDE) methods for the inspection of light-water reactor components. The scope of this research encompasses primary system pressure boundary materials including dissimilar metal welds (DMWs), cast austenitic stainless steels (CASS), piping with corrosion-resistant cladding, weld overlays, inlays and onlays, and far-side examinations of austenitic piping welds. A primary objective of this work is to evaluate various NDE methods to assess their ability to detect, localize, and size cracks in steel components that challenge standard and/or conventional inspection methodologies. This interim technical letter report provides a summary of a technical evaluation aimed at assessing the capabilities of phased-array (PA) ultrasonic testing (UT) methods as applied to the inspection of small-bore DMW components that exist in the reactor coolant systems (RCS) of pressurized water reactors (PWRs). Operating experience and events such as the circumferential cracking in the reactor vessel nozzle-to-RCS hot leg pipe at V.C. Summer nuclear power station, identified in 2000, show that in PWRs where primary coolant water (or steam) are present under normal operation, Alloy 82/182 materials are susceptible to pressurized water stress corrosion cracking. The extent and number of occurrences of DMW cracking in nuclear power plants (domestically and internationally) indicate the necessity for reliable and effective inspection techniques. The work described herein was performed to provide insights for evaluating the utility of advanced NDE approaches for the inspection of DMW components such as a pressurizer surge nozzle DMW, a shutdown cooling pipe DMW, and a ferritic (low-alloy carbon steel)-to-CASS pipe DMW configuration.

Diaz, Aaron A.; Cinson, Anthony D.; Crawford, Susan L.; Anderson, Michael T.

2009-11-30T23:59:59.000Z

302

Ultrasonic Flaw Detection of Cracks and Machined Flaws as Observed Through Austenitic Stainless Steel Piping Welds  

SciTech Connect (OSTI)

Piping welds in the pressure boundary of light water reactors (LWRs) are subject to a volumetric examination based on Section XI of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code. Due to access limitations and high background radiation levels, the technique used is primarily ultrasonic rather than radiographic. Many of the austenitic welds in safety-related piping systems provide limited access to both sides of the weld, so a far-side examination is necessary. Historically, far-side inspections have performed poorly because of the coarse and elongated grains that make up the microstructures of austenitic weldments. The large grains cause the ultrasound to be scattered, attenuated, and redirected. Additionally, grain boundaries or weld geometry may reflect coherent ultrasonic echoes, making flaw detection and discrimination a more challenging endeavor. Previous studies conducted at the Pacific Northwest National Laboratory (PNNL) on ultrasonic far-side examinations in austenitic piping welds involved the application of conventional transducers, use of low-frequency Synthetic Aperture Focusing Techniques (SAFT), and ultrasonic phased-array (PA) methods on specimens containing implanted thermal fatigue cracks and machined reflectors [1-2]. From these studies, PA inspection provided the best results, detecting nearly all of the flaws from the far side. These results were presented at the Fifth International Conference on NDE in Relation to Structural Integrity for Nuclear and Pressurised Components in 2006. This led to an invitation to examine field-removed specimens containing service-induced intergranular stress corrosion cracks (IGSCC) at the Electric Power Research Institutes (EPRI) Nondestructive Evaluation (NDE) Center, in Charlotte, North Carolina. Results from this activity are presented.

Anderson, Michael T.; Cinson, Anthony D.; Crawford, Susan L.; Cumblidge, Stephen E.; Diaz, Aaron A.

2009-07-01T23:59:59.000Z

303

Use of active solar heating and domestic hot water (DHW) systems in single family homes: technical findings and lessons learned from the HUD solar demonstration program  

SciTech Connect (OSTI)

This report describes the technical experiences with active solar space and domestic water heating systems installed in single family homes. It is intended to assist members of the home building and solar industries to provide their customers with satisfactory products and installations and to avoid some of the problems caused by improper equipment, system design, and installation. Two chapters focus on liquid and air systems. Problems are discussed by subsystem: collectors, transport, storage, distribution, and control. Industry responsibility, including cooperation during the construction phase and responsiveness during the occupancy phase, are considered. The conclusion notes that system efficiency, which now runs in the 10 to 30 - percent range, can be greatly improved if the solar and home building industries make greater efforts to properly insulate pipes, ducts, and storage; assure system operation at the proper time; and minimize leaks through valves or dampers. Additional suggestions are given. Graphs, photographs, footnotes, a glossary, and selected bibliographies are provided.

Freeborne, W.; Mara, G.

1982-12-01T23:59:59.000Z

304

Water inventory management in condenser pool of boiling water reactor  

DOE Patents [OSTI]

An improved system for managing the water inventory in the condenser pool of a boiling water reactor has means for raising the level of the upper surface of the condenser pool water without adding water to the isolation pool. A tank filled with water is installed in a chamber of the condenser pool. The water-filled tank contains one or more holes or openings at its lowermost periphery and is connected via piping and a passive-type valve (e.g., squib valve) to a high-pressure gas-charged pneumatic tank of appropriate volume. The valve is normally closed, but can be opened at an appropriate time following a loss-of-coolant accident. When the valve opens, high-pressure gas inside the pneumatic tank is released to flow passively through the piping to pressurize the interior of the water-filled tank. In so doing, the initial water contents of the tank are expelled through the openings, causing the water level in the condenser pool to rise. This increases the volume of water available to be boiled off by heat conducted from the passive containment cooling heat exchangers. 4 figs.

Gluntz, Douglas M. (San Jose, CA)

1996-01-01T23:59:59.000Z

305

Fast ultrasonic imaging in a liquid filled pipe  

SciTech Connect (OSTI)

A new method is described for the imaging of the interior of a liquid filled metallic pipe using acoustical techniques. The experimental system incorporates an array of 20 acoustical transducers and is capable of capturing the images of moving bubbles at a frame rate in excess of 300/s. The transducers are mounted circumferentially around the pipe. Each transducer is pulsed in sequence, and the echoes reflected from vapor bubbles in the interior are detected, digitized and processed by a computer to generate an image. The high rate of speed was achieved by the use of newly developed software and electronic circuitry. This approach has eliminated most of the spurious echo signals which degraded the performance of previous imaging systems. The capability of the method is illustrated by imaging actual vapor bubbles in rapid sequence in the pipe. 13 refs.

Kolbe, W.F.; Turko, B.T.; Leskovar, B.

1985-10-01T23:59:59.000Z

306

Hybrid sodium heat pipe receivers for dish/Stirling systems  

SciTech Connect (OSTI)

The design of a hybrid solar/gas heat pipe receiver for the SBP 9 kW dish/Stirling system using a United Stirling AB V160 Stirling engine and the results of on-sun testing in alternative and parallel mode will be reported. The receiver is designed to transfer a thermal power of 35 kW. The heat pipe operates at around 800 C, working fluid is sodium. Operational options are solar-only, gas augmented and gas-only mode. Also the design of a second generation hybrid heat pipe receiver currently developed under a EU-funded project, based on the experience gained with the first hybrid receiver, will be reported. This receiver is designed for the improved SPB/L. and C.-10 kW dish/Stirling system with the reworked SOLO V161 Stirling engine.

Laing, D.; Reusch, M. [Deutsche Forschungsanstalt fuer Luft- und Raumfahrt e.V., Stuttgart (Germany). Inst. fuer Technische Thermodynamik

1997-12-31T23:59:59.000Z

307

Light weight underground pipe or cable installing device  

SciTech Connect (OSTI)

This invention pertains to a light weight underground pipe or cable installing device adapted for use in a narrow and deep operating trench. More particularly this underground pipe installing device employs a pair of laterally movable gates positioned adjacent the bottom of the operating trench where the earth is more solid to securely clamp the device in the operating trench to enable it to withstand the forces exerted as the actuating rod is forced through the earth from the so-called operating trench to the target trench. To accommodate the laterally movable gates positioned adjacent the bottom of the narrow pipe installing device, a pair of top operated double-acting rod clamping jaws, operated by a hydraulic cylinder positioned above the actuating rod are employed.

Schosek, W. O.

1985-01-08T23:59:59.000Z

308

Drill pipe with helical ridge for drilling highly angulated wells  

SciTech Connect (OSTI)

This patent describes a method for drilling a highly angulated wellbore with a rotary rig having a drill string terminated with a bit which method employs drilling fluid. The improvement comprises: employing a length of drill pipe in the highly angulated drill string which has a helical ridge disposed thereabout, wherein the flight of the helical ridge is wound in the same direction as the rotation of the drill string such as to move drill cuttings in a direction from the bit to the surface upon rotation, and wherein the height of the helical ridge above the circumferential surface of the length of the drill pipe is 1 to 15 percent of the diameter of the drill pipe.

Finnegan, J.E.; Williams, J.G.

1991-08-27T23:59:59.000Z

309

Investigation of guided waves propagation in pipe buried in sand  

SciTech Connect (OSTI)

The inspection of pipelines by guided wave testing is a well-established method for the detection of corrosion defects in pipelines, and is currently used routinely in a variety of industries, e.g. petrochemical and energy. When the method is applied to pipes buried in soil, test ranges tend to be significantly compromised because of attenuation of the waves caused by energy radiating into the soil. Moreover, the variability of soil conditions dictates different attenuation characteristics, which in-turn results in different, unpredictable, test ranges. We investigate experimentally the propagation and attenuation characteristics of guided waves in pipes buried in fine sand using a well characterized full scale experimental apparatus. The apparatus consists of an 8 inch-diameter, 5.6-meters long steel pipe embedded over 3 meters of its length in a rectangular container filled with fine sand, and an air-bladder for the application of overburden pressure. Longitudinal and torsional guided waves are excited in the pipe and recorded using a transducer ring (Guided Ultrasonics Ltd). Acoustic properties of the sand are measured independently in-situ and used to make model predictions of wave behavior in the buried pipe. We present the methodology and the systematic measurements of the guided waves under a range of conditions, including loose and compacted sand. It is found that the application of overburden pressure modifies the compaction of the sand and increases the attenuation, and that the measurement of the acoustic properties of sand allows model prediction of the attenuation of guided waves in buried pipes with a high level of confidence.

Leinov, Eli; Cawley, Peter; Lowe, Michael J.S. [NDE Group, Department of Mechanical Engineering, Imperial College London, London SW7 2AZ (United Kingdom)

2014-02-18T23:59:59.000Z

310

Biomass Gasification in Supercritical Water  

Science Journals Connector (OSTI)

Biomass Gasification in Supercritical Water ... A packed bed of carbon within the reactor catalyzed the gasification of these organic vapors in the water; consequently, the water effluent of the reactor was clean. ... A method for removing plugs from the reactor was developed and employed during an 8-h gasification run involving potato wastes. ...

Michael Jerry Antal, Jr.; Stephen Glen Allen; Deborah Schulman; Xiaodong Xu; Robert J. Divilio

2000-10-14T23:59:59.000Z

311

Enchancement of heat pipes with ion-drag pumps  

E-Print Network [OSTI]

ENHANCEMENT OF HEAT PIPES WITH ION-DRAG PUMPS A Thesis by BRUCE RUSSELL BABIN Submitted to the Office of Graduate Studies of Texas AE'M I. niversity in partial fulfillment of the requirements for the degree of MASTER OF SCIEiVCE August 1991... Malor Subject: Mechanical Engineering ENHANCEMENT OF HEAT PIPES WITH ION-DRAG PUMPS A Thesis by BRUCE RUSSELL BABIN Approved as to style and content by G. P. Peterson (Charr of Committee) L. S. Fletcher (Member) . Hassan ( Member) W. L...

Babin, Bruce Russell

1991-01-01T23:59:59.000Z

312

Guide to good practices for equipment and piping labeling  

SciTech Connect (OSTI)

This Guide to Good Practices is written to enhance understanding of, and provide direction for, Equipment and Piping Labeling, Chapter XVIII of Department of Energy (DOE) Order 5480.19, Conduct of Operations Requirements for DOE Facilities. The practices in this guide should be considered when planning or reviewing labeling programs. Contractors are advised to adopt procedures that meet the intent of DOE Order 5480.19. Equipment and Piping Labeling is an element of an effective Conduct of Operations program. The complexity and array of activities performed in DOE facilities dictate the necessity for a coordinated labeling program to promote safe and efficient operations.

NONE

1998-12-01T23:59:59.000Z

313

A unified model for slug flow in upward inclined pipes  

SciTech Connect (OSTI)

The effect of pipe inclination on upward two-phase slug flow characteristics has been studied both experimentally and theoretically. Experimental data were acquired for the entire range of inclination angles, from horizontal to vertical. New correlations were developed for slug length and liquid holdup in the slug body as a function of inclination angle. A unified model has been developed for the prediction of slug flow behavior in upward inclined pipes. Reasonable agreement is observed between the pressure drop predicted by the model and the experimental data.

Felizola, H.; Shoham, O. [Univ. of Tulsa, OK (United States). Petroleum Engineering Dept.

1995-03-01T23:59:59.000Z

314

DEVELOPMENT AND MANUFACTURE OF COST EFFECTIVE COMPOSITE DRILL PIPE  

SciTech Connect (OSTI)

This technical report presents the engineering research, process development and data accomplishments that have transpired to date in support of the development of Cost Effective Composite Drill Pipe (CDP). The report presents progress made from October 1, 2003 through September 30, 2004 and contains the following discussions: (1) Direct Electrical Connection for Rotary Shoulder Tool Joints; (2) Conductors for inclusion in the pipe wall (ER/DW-CDP); (3) Qualify fibers from Zoltek; (4) Qualify resin from Bakelite; (5) First commercial order for SR-CDP from Integrated Directional Resources (SR-CDP); and (6) Preparation of papers for publication and conference presentations.

James C. Leslie; James C. Leslie II; Lee Truong; James T. Heard; Peter Manekas

2005-03-18T23:59:59.000Z

315

A Monte Carlo code describing the neutral gas transport in pipe configurations with attenuating media  

Science Journals Connector (OSTI)

A three-dimensional Monte Carlo description of the neutral gas transport in pipe configurations with almost arbitrary torsion and curvature is presented. To avoid quadratic or even transcendental expressions describing the pipe surfaces confining and ...

A. Nicolai

1993-06-01T23:59:59.000Z

316

The Transport of LNG by Pipe Lines: Technical and Economic Aspects  

Science Journals Connector (OSTI)

It has been suggested [1...] that natural gas pipe lines may be replaced by special pipe lines carrying LNG. By almost completely eliminating the recompression losses ... It will be shown that the transportation ...

E. Carbonell; J. Y. Guerin; P. Solente

1967-01-01T23:59:59.000Z

317

Optimization of the configuration and working fluid for a micro heat pipe thermal control device  

E-Print Network [OSTI]

of a micro heat pipe system containing a working fluid with physical properties having been speciffcally selected such that the heat pipes, as a whole, vary in effective thermal conductance, thereby providing a level of temperature regulation...

Coughlin, Scott Joseph

2006-04-12T23:59:59.000Z

318

Correct conditions for heat treatment of butt welded oil drilling pipes  

Science Journals Connector (OSTI)

The application of optimum normalization conditions decreases the hardness and increases the impact strength of drilling pipes used in geological survey work by 100% and that of oil drilling pipes by 2530%, the ...

F. N. Tavadze; Z. G. Napetvaridze

1965-10-01T23:59:59.000Z

319

Seismic vibration analysis of fluid-structure interaction in LMFBR piping systems  

SciTech Connect (OSTI)

This paper is a basic study on the vibrational characteristics of an LMFBR piping system containing liquid sodium under one-dimensional seismic excitation. Using Z-shaped piping, the authors formulate coupled equations for the pipe's bending vibration and pressure wave, and transform them into two-degree-of-freedom vibration equations for the first modes of the piping vibration and pressure wave. A numerical study using the vibration model shows that: 1) the coupling effect appears between piping acceleration and liquid pressure for a piping configuration having a natural frequency ratio ..nu.. = about 0.5 to 2.0; 2) the magnitude of seismically induced pressure reaches 0.7 kPa to 1 kPa per gal; and 3) the dead-mass model of liquid gives a nonconservative response depending on the pipe's geometrical configuration, compared to that from the pressure-wave-piping-interaction model.

Hara, F.

1988-05-01T23:59:59.000Z

320

Numerical Analysis of Fluid Flow and Heat Transfer within Grooved Flat Mini Heat Pipes  

Science Journals Connector (OSTI)

A Theoretical study is carried out in order to verify the Mini Heat Pipe (MHP) concept for cooling high ... as an integrated part of a Flat Mini Heat Pipe (FMHP). Hence, a detailed ... with axial microchannels is...

Jed Mansouri; Samah Maalej; Mohamed Sassi

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Heat Pipe Performance Enhancement with Binary Mixture Fluids that Exhibit Strong Concentration Marangoni Effects  

E-Print Network [OSTI]

and solar concentration, for a gravity-assisted heat pipevs. solar concentration with a gravity-assisted heat pipe inand solar concentration, for a gravity-assisted heat pipe

Armijo, Kenneth Miguel

2011-01-01T23:59:59.000Z

322

E-Print Network 3.0 - advanced heat pipes Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

buried pipes J.C. Morud1 and A. Simonsen1 1 SINTEF Materials and Chemistry... for the heat loss from buried pipes have been known for a long time. In this paper, we derive...

323

Experimental and numerical study of gas dynamics of exhaust pipe of gas turbine unit  

Science Journals Connector (OSTI)

A few geometrical configurations of exhaust pipe of marine gas turbine unit were investigated experimentally in NPP Mashproeykt...

Valery Solodov; Juriy Starodubtsev; Boris Isakov

2004-02-01T23:59:59.000Z

324

Parton distributions for the LHC Run II  

E-Print Network [OSTI]

We present NNPDF3.0, the first set of parton distribution functions (PDFs) determined with a methodology validated by a closure test. NNPDF3.0 uses a global dataset including HERA-II deep-inelastic inclusive cross-sections, the combined HERA charm data, jet production from ATLAS and CMS, vector boson rapidity and transverse momentum distributions from ATLAS, CMS and LHCb, W+c data from CMS and top quark pair production total cross sections from ATLAS and CMS. Results are based on LO, NLO and NNLO QCD theory and also include electroweak corrections. To validate our methodology, we show that PDFs determined from pseudo-data generated from a known underlying law correctly reproduce the statistical distributions expected on the basis of the assumed experimental uncertainties. This closure test ensures that our methodological uncertainties are negligible in comparison to the generic theoretical and experimental uncertainties of PDF determination. This enables us to determine with confidence PDFs at different perturbative orders and using a variety of experimental datasets ranging from HERA-only up to a global set including the latest LHC results, all using precisely the same validated methodology. We explore some of the phenomenological implications of our results for the upcoming 13 TeV Run of the LHC, in particular for Higgs production cross-sections.

The NNPDF Collaboration; Richard D. Ball; Valerio Bertone; Stefano Carrazza; Christopher S. Deans; Luigi Del Debbio; Stefano Forte; Alberto Guffanti; Nathan P. Hartland; Jose I. Latorre; Juan Rojo; Maria Ubiali

2014-11-06T23:59:59.000Z

325

Pressure vessels and piping codes and standards: Volume 2. PVP-Volume 339  

SciTech Connect (OSTI)

The role of Codes and Standards for pressure vessels and piping has increased significantly over the past decade. More and more, developments in Codes and Standards are accommodating the increasing sophistication of analysis methods, the need to address post-construction and operating plant issues, and the efficiencies that may be gained by focusing codes and standards on the areas that present the greatest risk. Codes and Standards for new construction also have had to accommodate greater challenges and more extreme environments imposed by more escalating requirements on piping and pressure vessel design and fabrication. This volume has focused on these challenges faced by Codes and Standards development. The topics in this volume include: (1) International Code Developments; (2) Seismic Developments in Codes and Standards; (3) Fabrication, Repairs, and Installation Issues Relating to Codes and Standards; (4) Application of Risk Based Criteria to In-Service Inspections; (5) Risk Based Codes and Standards; (6) The Code--Then and Now; (7) Reactor Water Fatigue: Fitness for Service; and (8) Two ASME Pressure Technology Code Issues: Post-Construction Codes and Metrication. Separate abstracts were prepared for most of the papers in this volume.

Esselman, T.C. [ed.] [Altran Corp., Boston, MA (United States); Balkey, K. [ed.] [Westinghouse Electric Corp., Pittsburgh, PA (United States); Chao, K.K.N. [ed.] [Consumers Power Co., Jackson, MI (United States); Gosselin, S. [ed.] [Electric Power Research Institute, Charlotte, NC (United States); Hollinger, G. [ed.] [Babcock and Wilcox, Barberton, OH (United States); Lubin, B.T. [ed.] [ABB Combustion Engineering, Windsor, CT (United States); Mohktarain, K. [ed.] [CB and I Technical Services, Plainfield, IL (United States); O`Donnell, W. [ed.] [O`Donnell Consulting Engineers, Inc., Pittsburgh, PA (United States); Rao, K.R. [ed.] [Entergy Operations, Inc, Jackson, MI (United States)

1996-12-01T23:59:59.000Z

326

Diverless pipeline-repair system passes tests for 20-in. pipe  

SciTech Connect (OSTI)

Full-scale tests of a diverless pipeline repair system have shown its effectiveness for repairing subsea pipelines of up to 20 in. in diameter. The repair principle is based upon a metal-to-metal seal. The pipe end is cold forged to form a flare. The metal-to-metal seal is located on a cone which is part of the mechanical hydraulically actuated connector. The cone is advanced and the metal-to-metal seal is compressed between the cone and the inside diameter of the flare, forming a high integrity pipeline seal. A set of remotely controlled modules was constructed to perform the repair operations, including pipe flaring. A series of onshore and shallow water trials have demonstrated the practicability of these modules and the feasibility of the new tie-in concept for a diverless pipeline repair. A second set of tools has also been designed for pipeline tie-ins which works with the pipeline-repair spread.

Lerique, M.; Thiberge, P. (Elf Aquitaine, Pau (FR)); Wright, N. (British Gas PLC, Newcastle upon Tyne (UK))

1990-05-21T23:59:59.000Z

327

Performance Test and Energy Saving Analysis of a Heat Pipe Dehumidifier  

E-Print Network [OSTI]

Heat pipe technology applied to ventilation, dryness, and cooling and heating radiator in a building is introduced in this paper. A new kind of heat pipe dehumidifier is designed and tested. The energy-saving ratio with the heat pipe dehumidifier...

Zhao, X.; Li, Q.; Yun, C.

2006-01-01T23:59:59.000Z

328

Heat-pipe technology: a bibliography with abstracts. Quarterly update, April-June 1981  

SciTech Connect (OSTI)

A bibliography of 93 publications on heat pipes is presented. The citations are arranged by categories of general information and heat pipe uses, theory, design, fabrication, and performance. An author index and title/keyword index are provided. Five heat-pipe related patents are listed. (LCL)

Srinivasan, R.; Feldman, K.T. Jr. (eds.)

1981-07-01T23:59:59.000Z

329

BOA: Pipe-asbestos insulation removal robot system  

SciTech Connect (OSTI)

This paper describes the BOA system, a mobile pipe-external crawler used to remotely strip and bag (possibly contaminated) asbestos-containing lagging and insulation materials (ACLIM) from various diameter pipes in (primarily) industrial installations across the DOE weapons complex. The mechanical removal of ACLIM is very cost-effective due to the relatively low productivity and high cost involved in human removal scenarios. BOA, a mechanical system capable of removing most forms of lagging (paper, plaster, aluminum sheet, clamps, screws and chicken-wire), and insulation (paper, tar, asbestos fiber, mag-block) uses a circular cutter and compression paddles to cut and strip the insulation off the pipe through compression, while a HEPA-filter and encapsulant system maintain a certifiable vacuum and moisture content inside the system and on the pipe, respectively. The crawler system has been built and is currently undergoing testing. Key design parameters and performance parameters are developed and used in performance testing. Since the current system is a testbed, we also discuss future enhancements and outline two deployment scenarios (robotic and manual) for the final system to be designed and completed by the end of FY `95. An on-site demonstration is currently planned for Fernald in Ohio and Oak Ridge in Tennessee.

Schempf, H.; Bares, J.; Mutschler, E. [and others

1995-12-31T23:59:59.000Z

330

Pumps, pipes and valves: The heart of a system  

SciTech Connect (OSTI)

This is a guide to suppliers of pumps, pipes and valves for construction or repair of hazardous materials. The article contains a compilation of the suppliers/manufacturers and how to contact them, the corrosion resistance of the component, whether double-secondary containment is available, and the material used to construct the component.

NONE

1996-05-01T23:59:59.000Z

331

Determination of petroleum pipe scale solubility in simulated lung fluid  

E-Print Network [OSTI]

referred to as ??scale.?? This thesis is concerned with the presence of 226Ra in scale deposited on the inner surfaces of oil drilling pipes and the internal dose consequences of inhalation of that scale once released. In the process of normal operation...

Cezeaux, Jason Roderick

2005-08-29T23:59:59.000Z

332

Assessment of suspended dust from pipe rattling operations  

E-Print Network [OSTI]

Gaussian plume model is applicable to the data of pipe rattling operations for finding an attainment area. It is estimated that workers who remain within 1 m of the machine centerline and directly downwind have an 8-hour TWA exposure opportunity of (13.3 ...

Park, Ju-Myon

2006-10-30T23:59:59.000Z

333

Thermally Enhanced Pipe for Geothermal Applications Stphane Gonthier  

E-Print Network [OSTI]

in St-Lazare, QC, Canada · Leaders in Pipe and Tubing in Niche Markets · Over 30 years of experience in the Market : 2009 in Canada (CGC Conference, Toronto, ON) 2010 in USA (IGSHPA Technical Conference and Expo Field (2010), Designer: Ecosystem, QC · 3 Geo-Solar Hybrid Systems in NH and MA, 250 X ¾" slinkies (2011

334

PDSF FAQ - Why don't my jobs run?  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

don't my don't my jobs run? Why don't my jobs run? If your jobs are just sitting in the "qw" state and not starting you cannot ask SGE directly why they aren't running (that service is turned off for scalability) so you have to do some detective work. Things to consider include: - Is the cluster full? Maybe you just need to be patient, especially if your project doesn't have any shares. In that case your jobs won't run until the cluster isn't full. In any event your jobs can't run until some other jobs finish and sometimes there are a lot of relatively long jobs running. - Check your job's resource requirements. It might be that you are incorrectly specifying some resource or requesting something that is not available. For example you might be specifying "-l eliza18io=1" and

335

Performance Evaluation of Hot Water Efficiency Plumbing System Using Thermal Valve  

E-Print Network [OSTI]

In Korea two popular water distribution systemsthe branch type and the separate type systemshave serious drawbacks. The branch type suffers from temperature instability while the separate type suffers from excessive piping. Neither of them re...

Cha, K. S.; Park, M. S.; Seo, H. Y.

336

Time Domain Terahertz Non Destructive Evaluation of Water Intrusion in Composites and Corrosion under Insulation  

Science Journals Connector (OSTI)

Time domain terahertz (a.k.a. T-Ray or THz) imaging is used to detect water intrusion and delamination in composite structures used in radomes. Corrosion is detected on pipes beneath...

White, Jeffrey S; Zimdars, David A

337

Water/Wastewater Engineering Report (Storm Sewer/Infiltration Sanitary Sewage Separation-M1 Model)  

E-Print Network [OSTI]

In some cities, the municipal sewer system collects both storm water and sanitary sewage in the same pipes. During dry weather these sewers carry all the sanitary sewage to the wastewater treatment plant for treatment. However, when rainstorms...

Liu, Z.; Brumbelow, K.; Haberl, J. S.

2006-10-30T23:59:59.000Z

338

Water Distribution System Monitoring and Decision Support Using a Wireless Sensor Network  

E-Print Network [OSTI]

Water distribution systems comprise labyrinthine networks of pipes, often in poor states of repair, that are buried beneath our city streets and relatively inaccessible. Engineers who manage these systems need reliable ...

Allen, Michael

339

Running jobs error: "inet_arp_address_lookup"  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

jobs error: "inetarpaddresslookup" Resolved: Running jobs error: "inetarpaddresslookup" September 22, 2013 by Helen He (0 Comments) Symptom: After the Hopper August 14...

340

New Jersey: Atlantic City Jitneys Running on Natural Gas | Department...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

approximately 15 million in funding allowed he city to purchase nearly 300 compressed natural gas vehicles, including 190 Atlantic City "jitneys." The jitneys, minibuses run by...

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Assessment of Crack Detection in Heavy-Walled Cast Stainless Steel Piping Welds Using Advanced Low-Frequency Ultrasonic Methods  

SciTech Connect (OSTI)

Studies conducted at the Pacific Northwest National Laboratory in Richland, Washington, have focused on assessing the effectiveness and reliability of novel approaches to nondestructive examination (NDE) for inspecting coarse-grained, cast stainless steel reactor components. The primary objective of this work is to provide information to the U.S. Nuclear Regulatory Commission on the effectiveness and reliability of advanced NDE methods as related to the inservice inspection of safety-related components in pressurized water reactors (PWRs). This report provides progress, recent developments, and results from an assessment of low frequency ultrasonic testing (UT) for detection of inside surface-breaking cracks in cast stainless steel reactor piping weldments as applied from the outside surface of the components. Vintage centrifugally cast stainless steel piping segments were examined to assess the capability of low-frequency UT to adequately penetrate challenging microstructures and determine acoustic propagation limitations or conditions that may interfere with reliable flaw detection. In addition, welded specimens containing mechanical and thermal fatigue cracks were examined. The specimens were fabricated using vintage centrifugally cast and statically cast stainless steel materials, which are typical of configurations installed in PWR primary coolant circuits. Ultrasonic studies on the vintage centrifugally cast stainless steel piping segments were conducted with a 400-kHz synthetic aperture focusing technique and phased array technology applied at 500 kHz, 750 kHz, and 1.0 MHz. Flaw detection and characterization on the welded specimens was performed with the phased array method operating at the frequencies stated above. This report documents the methodologies used and provides results from laboratory studies to assess baseline material noise, crack detection, and length-sizing capability for low-frequency UT in cast stainless steel piping.

Anderson, Michael T.; Crawford, Susan L.; Cumblidge, Stephen E.; Denslow, Kayte M.; Diaz, Aaron A.; Doctor, Steven R.

2007-03-01T23:59:59.000Z

342

Piping network design of geothermal district heating systems: Case study for a university campus  

Science Journals Connector (OSTI)

Geothermal district heating system design consists of two parts: heating system and piping network design. District heating system design and a case study for a university campus is given in Yildirim etal. [1] in detail. In this study, piping network design optimisation is evaluated based on heat centre location depending upon the cost and common design parameters of piping networks which are pipe materials, target pressure loss (TPL) per unit length of pipes and installation type. Then a case study for the same campus is presented.

Nurdan Yildirim; Macit Toksoy; Gulden Gokcen

2010-01-01T23:59:59.000Z

343

Heat transfer enhancement of micro oscillating heat pipes with self-rewetting fluid  

Science Journals Connector (OSTI)

Abstract This paper discusses the heat transfer enhancement of micro oscillating heat pipes (MOHPs) using self-rewetting fluid (SRWF). To clarify the heat transfer enhancement mechanism, the thermo-physical properties (including surface tensions, contact angles and thermal conductivities) of \\{SRWFs\\} and deionized water have been comparatively analyzed. Furthermore, to find out the strengthening effect, experimental studies were performed on MOHPs. During the experiments, \\{MOHPs\\} with heat transfer length (L) of 100, 150 and 200mm, consisting of 4 meandering turns and inner diameter (Di) of 0.4, 0.8, 1.3mm were adopted. SRWF and deionized water were employed as the working fluids. The results showed that, due to the unique property that the surface tension increases with increasing temperature, the SRWF can spontaneously wet the hotter region. The capillary resistance of the SRWF was much smaller than that of the deionized water, which is conductive to improving the circulation efficiency of the working fluid. Compared with the water, as the working fluid of the MOHPs, the SRWF exhibited much better thermal performance, which can decrease the thermal resistance and extend the effective operation range of MOHPs.

Yanxin Hu; Tengqing Liu; Xuanyou Li; Shuangfeng Wang

2014-01-01T23:59:59.000Z

344

SSRL_2003_Run_Sched.xls  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

26/02 26/02 Run Shutdown Weekends Maintenance / AP Injector Startup University Holidays PPS Certification Injector / SPEAR Startup SLAC Closed Edited - Robleto, Scott 10 11 12 AP 13 14 12 AP MA/AP 13 14 15 8 9 7 3 L A 11 12 8 9 I S N 30 11 O 12 13 14 18 A I T 31 29 2002 2003 1 2 3 13 4 2002 2003 1 2 3 4 25 26 29 30 28 30 5 6 5 6 8 9 22 16 17 15 16 N 23 24 25 5 17 18 19 Startup 23 24 23 22 21 1 2 3 MA/AP 10 4 5 AP 6 7 8 9 20 22 18 24 24 17 22 23 20 21 14 15 11 16 10 12 9 13 7 8 S T A 1 2 3 15 4 5 5 6 8 6 4 5 R T 8 1 7 6 7 U P 2 3 10 9 10 9 11 12 13 14 15 16 17 31 24 25 26 27 30 18 19 28 29 20 21 22 23 18 11 12 13 14 15 16 17 29 30 23 24 25 26 27 28 19 20 21 22 1 2 3 4 31 25 26 27 28 29 30 19 6 7 8 9 10 11 12 13 31 25 26 27 28 29 14 15 16 20 17 18 19 25 26 27 28 1 2 3 4 5 6 7 30 31 21 15 16 13 14 10 27 28 26 22 23 24 25 8 9 10 21 20 10 1 2 3 4 5 6 7 7 8 9 10 11 12 22 23 15 16 21 8 9 10 5 6 7 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 5 6 7 8 9 10 11 12 15 22 23 16 17 18 19 26 27 28 30 25 24 20 21 23 24 14 1 2 3 4 15 16 29 30 31 29 31 28 20 28 21 22 23 24 25 17 26 27 18 19 20 24

345

FY2003 Run Sched.xls  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

7/16/02 7/16/02 Run Maint/AP PPS Certification SLAC Closed Shutdown Startup Weekends University Holidays AP AP 15 8 9 10 11 12 14 12 AP MA/AP 7 3 L A 11 12 8 9 I 7 8 9 T S N 30 11 O 12 13 14 18 A I Edited by J. Robleto, B. Scott 31 29 2002 2003 1 2 3 N 13 4 2002 2003 1 2 3 29 30 31 10 5 6 5 6 7 8 9 22 23 MA/AP AP A E 5 17 18 19 10 11 12 9 MA/AP 18 Startup 24 23 22 21 16 17 15 1 2 3 15 10 4 5 AP 5 6 16 13 20 21 20 22 23 24 24 16 17 13 14 5 6 7 8 4 5 1 2 3 6 4 5 1 2 3 8 9 7 6 7 10 8 9 10 11 12 13 14 15 16 17 31 24 25 26 27 30 18 19 28 29 20 21 22 23 S T A R T U P 18 11 12 13 14 15 16 17 29 30 23 24 25 26 27 28 19 20 21 22 1 2 3 4 31 25 26 27 28 29 30 19 6 7 8 9 10 11 12 13 30 31 25 26 27 28 29 22 23 13 14 15 16 20 17 18 19 25 26 27 28 1 2 3 4 5 6 7 30 31 24 25 26 27 28 29 15 16 13 14 10 25 17 18 19 20 22 21 29 22 23 24 25 27 28 26 21 19 20 7 8 9 10 1 2 3 4 5 6 7 8 9 10 11 12 13 14 22 23 15 16 21 25 17 18 19 20 24 4 8 9 10 5 6 7 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 5 6 7 8 9 10 11 12 15 22 23 16 17 18 19 26 27 28 30 25 24 20 21 23 24 14 1 2 3 4 28 21 22 23 24 25 26 15 16 29 30 31 26 27 28

346

SEISMIC DESIGN EVALUATION GUIDELINES FOR BURIED PIPING FOR THE DOE HLW FACILITIES'  

Office of Scientific and Technical Information (OSTI)

6 1 6 1 7 1 1 SEISMIC DESIGN EVALUATION GUIDELINES FOR BURIED PIPING FOR THE DOE HLW FACILITIES' Chi-Wen Lin Consultant, Martinez, CA George Antaki Westinghouse Savannah River Co., Aiken, SC Kamal Bandyopadhyay Brookhaven National Lab., Upton, NY ABSTRACT This paper presents the seismic design and evaluation guidelines for underground piping for the Department of Energy (DOE) High-Level-Waste (HLW) Facilities. The underground piping includes both single and double containment steel pipes and concrete pipes with steel lining, with particular emphasis on the double containment piping. The design and evaluation guidelines presented in this paper follow the generally accepted beam-on-elastic- foundation analysis principle and the inertial response calculation method, respectively, for piping directly

347

The Pixel Detector of the ATLAS Experiment for LHC Run-2  

E-Print Network [OSTI]

The Pixel Detector of the ATLAS experiment has shown excellent performance during the whole Run-1 of LHC. Taking advantage of the long shutdown, the detector was extracted from the experiment and brought to surface, to equip it with new service quarter panels, to repair modules and to ease installation of the Insertable B-Layer (IBL). IBL is a fourth layer of pixel detectors, and has been installed in May 2014 between the existing Pixel Detector and a new smaller radius beam-pipe at a radius of 3.3 cm. To cope with the high radiation and hit occupancy due to the proximity to the interaction point, a new read-out chip and two different silicon sensor technologies (planar and 3D) have been developed. Furthermore, the physics performance will be improved through the reduction of pixel size while, targeting for a low material budget, a new mechanical support using lightweight staves and a CO2 based cooling system have been adopted. An overview of the refurbishing of the Pixel Detector and of the IBL project as we...

Pernegger, Heinz; The ATLAS collaboration

2015-01-01T23:59:59.000Z

348

Diversity in sympatric chinook salmon runs: timing, relative fat content and maturation  

Science Journals Connector (OSTI)

Four distinct groupings, or reporting groups, were defined based upon genetic (% ... Trinity-Salmon Spring run, the Trinity-Salmon Fall run, the Klamath Fall run and the Lower Basin Fall run (Fig.1, Table1). ...

James W. Hearsey; Andrew P. Kinziger

2014-06-01T23:59:59.000Z

349

Production-Run Software Failure Diagnosis via Hardware Performance Counters  

E-Print Network [OSTI]

production-run failures caused by se- quential and concurrency bugs with low overhead. PBI is designed based overhead are needed. The state-of-the-art diagnosis techniques use software instrumentation to sample program properties at run time and use off-line statistical analysis to identify properties most

Sheridan, Jennifer

350

SRS Recovery Act Completes Major Lower Three Runs Project Cleanup  

Broader source: Energy.gov (indexed) [DOE]

August 14, 2012 August 14, 2012 AIKEN, S.C. - American Recovery and Reinvestment Act can now claim that 85 percent of the Savannah River Site (SRS) has been cleaned up with the recent completion of the Lower Three Runs (stream) Project. Twenty miles long, Lower Three Runs leaves the main body of the 310-square mile site and runs through parts of Barnwell and Allendale Coun- ties until it flows into the Savannah River. Government property on both sides of the stream acts as a buffer as it runs through privately-owned property. Completing this project reduces the site's footprint by another 10 percent. "We excavated and disposed of over five million pounds of contaminated soil from three specific sites along the stream, erected miles of fence and placed over 2,000 signs in order to make Lower Three Runs safe and to reduce our site's footprint by another 10 percent," said Chris

351

Total Precipitable Water  

SciTech Connect (OSTI)

The simulation was performed on 64K cores of Intrepid, running at 0.25 simulated-years-per-day and taking 25 million core-hours. This is the first simulation using both the CAM5 physics and the highly scalable spectral element dynamical core. The animation of Total Precipitable Water clearly shows hurricanes developing in the Atlantic and Pacific.

None

2012-01-01T23:59:59.000Z

352

NETL: Water-Energy Interface - Power Plant Water Management  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Power Plant Water Management Power Plant Water Management A Synergistic Combination of Advanced Separation and Chemical Scale Inhibitor Technologies for Efficient Use of Impaired Water as Cooling Water in Coal-Based Power Plants – Nalco Company Example of Pipe Scaling The overall objective of this project, conducted by Nalco Company in partnership with Argonne National Laboratory, is to develop advanced-scale control technologies to enable coal-based power plants to use impaired water in recirculating cooling systems. The use of impaired water is currently challenged technically and economically due to additional physical and chemical treatment requirements to address scaling, corrosion, and biofouling. Nalco's research focuses on methods to economically manage scaling issues (see Figure 1). The overall approach uses synergistic

353

NETL: News Release - New Carbon Drill Pipe Signals Technical Achievement  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

May 17, 2004 May 17, 2004 New Carbon Drill Pipe Signals Technical Achievement Technology May Benefit American Energy Production WASHINGTON, DC -- The Department of Energy (DOE) announced today the development of a new "composite" drill pipe that is lighter, stronger and more flexible than steel, which could significantly alter the ability to drain substantially more oil and gas from rock than traditional vertical wells. MORE INFO Read about January, 2003 field test Read about October, 2003 field test - "This is another example of the technology breakthroughs in the arena of domestic energy production being carried out by our Office of Fossil Energy," said Secretary of Energy Spencer Abraham. "To reach and recover untapped domestic oil and gas reserves, we must have the ability to

354

OBSERVATION REPORT BendKing Pipe Bending Machine.doc  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

BENDKING PIPE BENDING MACHI\NE BENDKING PIPE BENDING MACHI\NE DEMONSTRATION Field Observation Report for December 3 - 4, 2001 Date Published: March 2002 Brian Meindinger, RMOTC PREPARED FOR THE U.S. DEPARTMENT OF ENERGY ROCKY MOUNTAIN OILFIELD TESTING CENTER 907 N. POPLAR, SUITE 150 CASPER, WY 82601 1-888-599-2200 Approval: RMOTC Manager_____________________________ Date:______________ Disclaimer This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, nor any of their contractors, subcontractors, or their employees makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or any third party's use or the results of such use of any

355

Seismic Capacity of Threaded, Brazed, and Grooved Pipe Joints  

Broader source: Energy.gov (indexed) [DOE]

SEISMIC CAPACITY OF THREADED, SEISMIC CAPACITY OF THREADED, BRAZED AND GROOVED PIPE JOINTS Brent Gutierrez, PhD, PE George Antaki, PE, F.ASME DOE NPH Conference October 25-26, 2011 Motivation * Understand the behavior and failure mode of common joints under extreme lateral loads * Static and shake table tests conducted of pressurized - Threaded, - Brazed, - Mechanical joints Static Testing o Pressurized spool to 150 psi o Steady downward force applied while recording deflections o Grooved clamped mech. joints * 16 tests performed o Threaded joints * 4 tests o Brazed (copper) * 4 tests Grooved Couplings o Catalog items o ASTM A106 Grade B piping o ASTM A 536 couplings o Lateral deflections imposed well above manufacturer's angular installation tolerance

356

Method of manufacturing a heat pipe wick with structural enhancement  

DOE Patents [OSTI]

Heat pipe wick structure wherein a stout sheet of perforated material overlays a high performance wick material such as stainless steel felt affixed to a substrate. The inventive structure provides a good flow path for working fluid while maintaining durability and structural stability independent of the structure (or lack of structure) associated with the wick material. In one described embodiment, a wick of randomly laid .about.8 micron thickness stainless steel fibers is sintered to a metal substrate and a perforated metal overlay.

Andraka, Charles E. (Albuquerque, NM); Adkins, Douglas R. (Albuquerque, NM); Moreno, James B. (Albuquerque, NM); Rawlinson, K. Scott (Albuquerque, NM); Showalter, Steven K. (Albuquerque, NM); Moss, Timothy A. (Albuquerque, NM)

2006-10-24T23:59:59.000Z

357

Guide to good practices for equipment and piping labeling  

SciTech Connect (OSTI)

This Guide to Good Practices is written to enhance understanding of, and provide direction for, Equipment and Piping Labeling, Chapter XVIII of Department of Energy (DOE) Order 5480.19, Conduct of Operations Requirements for DOE Facilities.'' The practices in this guide should be considered when planning or reviewing labeling programs. Contractors are advised to adopt procedures that meet the intent of DOE Order 5480.19.

Not Available

1993-06-01T23:59:59.000Z

358

Guide to good practices for equipment and piping labeling  

SciTech Connect (OSTI)

This Guide to Good Practices is written to enhance understanding of, and provide direction for, Equipment and Piping Labeling, Chapter XVIII of Department of Energy (DOE) Order 5480.19, ``Conduct of Operations Requirements for DOE Facilities.`` The practices in this guide should be considered when planning or reviewing labeling programs. Contractors are advised to adopt procedures that meet the intent of DOE Order 5480.19.

Not Available

1993-06-01T23:59:59.000Z

359

A LOW-COST GPR GAS PIPE & LEAK DETECTOR  

SciTech Connect (OSTI)

A light-weight, easy to use ground penetrating radar (GPR) system for tracking metal/non-metal pipes has been developed. A pre-production prototype instrument has been developed whose production cost and ease of use should fit important market niches. It is a portable tool which is swept back and forth like a metal detector and which indicates when it goes over a target (metal, plastic, concrete, etc.) and how deep it is. The innovation of real time target detection frees the user from having to interpret geophysical data and instead presents targets as dots on the screen. Target depth is also interpreted automatically, relieving the user of having to do migration analysis. In this way the user can simply walk around looking for targets and, by ''connecting the dots'' on the GPS screen, locate and follow pipes in real time. This is the first tool known to locate metal and non-metal pipes in real time and map their location. This prototype design is similar to a metal detector one might use at the beach since it involves sliding a lightweight antenna back and forth over the ground surface. The antenna is affixed to the end of an extension that is either clipped to or held by the user. This allows him to walk around in any direction, either looking for or following pipes with the antenna location being constantly recorded by the positioning system. Once a target appears on the screen, the user can locate by swinging the unit to align the cursor over the dot. Leak detection was also a central part of this project, and although much effort was invested into its development, conclusive results are not available at the time of the writing of this document. Details of the efforts that were made as a part of this cooperative agreement are presented.

David Cist; Alan Schutz

2005-03-30T23:59:59.000Z

360

Trials of flexible pipe in sour service reveal degradation  

SciTech Connect (OSTI)

Field trials on flexible pipe offshore Qatar have shown that, under sour conditions, the layered, composite material can suffer severe degradation leading to failure. The failure demonstrates the significant effects of stress level, environmental aggressiveness, and localized hard zones in promoting sulfide stress cracking. Permeability of the sour gas through the composite layer of the flexible pipe resulted in varying degrees of sulfide attack and hydrogen embrittlement, depending on the susceptibility of the multilayered material. In the trials, the material was used as a gas-lift line in a sour-oil field in the Arabian Gulf. Flexible pipes have been used successfully for transporting methanol, benzene, and gas condensates in wet sweet environments at temperatures of up to 80 C. Little or no information, however, has been available as to its corrosion resistance in sour-service wells containing 6% CO{sub 2} with 3% H{sub 2}S partial pressures and at moderate temperatures. The paper discusses an underwater survey to evaluate the damage, visual inspection, mechanical tests, metallographic exam, and trial results.

Al-Maslamani, M.J. [Qatar General Petroleum Corp., Doha (Qatar)

1996-11-04T23:59:59.000Z

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

The D0 experiment's integrated luminosity for Tevatron Run IIa  

SciTech Connect (OSTI)

An essential ingredient in all cross section measurements is the luminosity used to normalize the data sample. In this note, we present the final assessment of the integrated luminosity recorded by the D0 experiment during Tevatron Run IIa. The luminosity measurement is derived from hit rates from the products of inelastic proton-antiproton collisions registered in two arrays of scintillation counters called the luminosity monitor (LM) detectors. Measured LM rates are converted to absolute luminosity using a normalization procedure that is based on previously measured inelastic cross sections and the geometric acceptance and efficiency of the LM detectors for registering inelastic events. During Run IIa, the LM detector performance was improved by a sequence of upgrades to the electronic readout system and other factors summarized in this note. The effects of these changes on the reported luminosity were tracked carefully during the run. Due to the changes, we partition the run into periods for which different conversions from measured LM rates to absolute luminosity apply. The primary upgrade to the readout system late in Run IIa facilitated a reevaluation of the overall normalization of the luminosity measurement for the full data sample. In this note, we first review the luminosity measurement technique employed by D0. We then summarize the changes to the LM system during Run IIa and the corresponding normalization adjustments. The effect of the adjustments is to increase D0's assessment of its recorded integrated luminosity compared to what was initially reported during Run IIa. The overall increase is 13.4% for data collected between April 20, 2002 (the beginning of Run IIa data used for physics analysis) and February 22, 2006 (the end of Run IIa).

Andeen, T.; Casey, B.C.K.; DeVaughan, K.; Enari, Y.; Gallas, E.; Krop, D.; Partridge, R.; Schellman, H.; Snow, G.R.; Yacoob, S.; Yoo, H.D.; /Brown U. /Fermilab /Indiana

2007-04-01T23:59:59.000Z

362

Run_HistoryStatistics_4_plots.xls  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Scheduled Scheduled User Hours User Beam Available hours User beam Availability (%) Total Faults Mean Time to Recovery Faults Per Day of Delivered Beam Delivered Integrated Current (A-hr) Hours of Top- up Scheduled Top-up Injector Availability MTBF Run 97-7 741.9 698.2 94.1% 17 2.6 0.58 52.9 N/A N/A 41.1 Run 98-1 703.1 640.6 91.1% 21 3.0 0.79 48.7 N/A N/A 30.5 Run 98-2 714.5 656.4 91.9% 27 2.2 0.99 50.3 N/A N/A 24.3 Run 98-3 1154.2 1091.1 94.5% 28 2.3 0.62 85.1 N/A N/A 39.0 Run 98-4 1152.2 1076.9 93.5% 31 2.4 0.69 84.2 N/A N/A 34.7 Run 98-5 1093.6 987.4 90.3% 49 2.2 1.19 79.3 N/A N/A 20.2 Run 99-1 976.6 923.6 94.6% 35 1.5 0.91 75.3 N/A N/A 26.4 Run 99-2 831.2 794.9 95.6% 19 1.9 0.57 65.1 N/A N/A 41.8 Run 99-3 832.0 805.6 96.8% 31 0.9 0.92 58.5 N/A N/A 26.0 Run 99-4 1320.0 1256.2 95.2% 42 1.5 0.80 102.5 N/A N/A 29.9 Run 99-5 1024.0 970.8 94.8% 44 1.2 1.09 82.0 N/A N/A 22.1 Run 00-1 1511.0

363

Progress in the Reliable Inspection of Cast Stainless Steel Reactor Piping Components  

SciTech Connect (OSTI)

Studies conducted at the Pacific Northwest National Laboratory (PNNL) in Richland, Washington, have focused on assessing the effectiveness and reliability of novel NDE approaches for the inspection of coarse-grained, cast stainless steel reactor components. The primary objective of this work is to provide information to the United States Nuclear Regulatory Commission (US NRC) on the utility, effectiveness and reliability of ultrasonic testing (UT) and eddy current testing (ET) inspection techniques as related to the inservice ultrasonic inspection of primary piping components in pressurized water reactors (PWRs). This paper describes progress, recent developments and results from assessments of three different NDE approaches including ultrasonic phased array inspection techniques, eddy current testing for surface-breaking flaws, and a low-frequency ultrasonic inspection methodology coupled with a synthetic aperture focusing technique (SAFT). Westinghouse Owners Group (WOG) cast stainless steel pipe segments with thermal and mechanical fatigue cracks, PNNL samples containing thermal fatigue cracks and several blank spool pieces were used for assessing the inspection methods. Eddy current studies were conducted on the inner diameter (ID) surface of piping specimens while the ultrasonic inspection methods were applied from the outer diameter (OD) surface of the specimens. The eddy current technique employed a Zetec MIZ-27SI Eddy Current instrument and a Zetec Z0000857-1 cross point spot probe with an operating frequency of 250 kHz. In order to reduce noise effects, degaussing of a subset of the samples resulted in noticeable improvements. The phased array approach was implemented using an R/D Tech Tomoscan III system operating at 1 MHz, providing composite volumetric images of the samples. The low-frequency ultrasonic method employs a zone-focused, multi-incident angle inspection protocol (operating at 250-500 kHz) coupled with SAFT for improved signal-to-noise and advanced imaging capabilities. A variety of dual-element, custom designed low-frequency probes (fixed-wedge and variable angle configurations) were employed in laboratory trials. Results from laboratory studies for assessing detection, localization and length sizing effectiveness are discussed. This work was sponsored by the U.S. Nuclear Regulatory Commission under Contract DE-AC06-76RLO 1830; NRC JCN Y6604; Mr. Wallace Norris, Program Monitor.

Doctor, Steven R.; Anderson, Michael T.; Diaz, Aaron A.; Cumblidge, Stephen E.

2005-12-31T23:59:59.000Z

364

Water Conservation Songs 1 Texas A&M AgriLife Extension Service Water Conservation Songs  

E-Print Network [OSTI]

Water Conservation Songs 1 Texas A&M AgriLife Extension Service Water Conservation Songs Gallon the drain, It's my job to turn it off, I want to save that rain! Cups, cups, cups of water, Running down the drain, It's my job to turn it off, I want to save that rain! Gallons, gallons, gallons of water Rushing

365

Journal of Fluids and Structures 22 (2006) 135171 Water hammer with column separation: A historical review  

E-Print Network [OSTI]

in fully filled pipelines. This may occur in a water-hammer event when the pressure in a pipeline drops worse: in one water-hammer event many repetitions of cavity formation and collapse may occur. This paper-sectional pipe area (m2 ) a pressure wave speed (m/s) B constant in water-hammer compatibility equations (s/m2

Tijsseling, A.S.

366

NETL: News Release - Carbon Fiber Drill Pipe Performs Flawlessly in First  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

January 9, 2003 January 9, 2003 Carbon Fiber Drill Pipe Performs Flawlessly in First Field Test Private Company to Use DOE-Sponsored Technology To Help Restore Domestic Production from Older Oil Wells TULSA COUNTY, OK - A new lightweight, flexible drill pipe engineered from space-age composites rather than steel has passed an important field test in a U.S. Department of Energy project and is now being readied for its first commercial use. - Photo - Composite Drill Pipe Being Bent - The advanced composite drill pipe could enable drillers in the future to bore sharply-curved "short radius" horizontal wells without creating fatigue stress on the drill pipe. The Energy Department's National Energy Technology Laboratory announced that the drill pipe, made from carbon fiber resins by Advanced Composite

367

Project W-320, 241-C-106 sluicing: Piping calculations. Volume 4  

SciTech Connect (OSTI)

This supporting document has been prepared to make the FDNW calculations for Project W-320 readily retrievable. The objective of this calculation is to perform the structural analysis of the Pipe Supports designed for Slurry and Supernate transfer pipe lines in order to meet the requirements of applicable ASME codes. The pipe support design loads are obtained from the piping stress calculations W320-27-I-4 and W320-27-I-5. These loads are the total summation of the gravity, pressure, thermal and seismic loads. Since standard typical designs are used for each type of pipe support such as Y-Stop, Guide and Anchors, each type of support is evaluated for the maximum loads to which this type of supports are subjected. These loads are obtained from the AutoPipe analysis and used to check the structural adequacy of these supports.

Bailey, J.W.

1998-07-24T23:59:59.000Z

368

Fuel and cladding nano-technologies based solutions for long life heat-pipe based reactors  

SciTech Connect (OSTI)

A novel nuclear reactor concept, unifying the fuel pipe with fuel tube functionality has been developed. The structure is a quasi-spherical modular reactor, designed for a very long life. The reactor module unifies the fuel tube with the heat pipe and a graphite beryllium reflector. It also uses a micro-hetero-structure that allows the fission products to be removed in the heat pipe flow and deposited in a getter area in the cold zone of the heat pipe, but outside the neutron flux. The reactor operates as a breed and burn reactor - it contains the fuel pipe with a variable enrichment, starting from the hot-end of the pipe, meant to assure the initial criticality, and reactor start-up followed by area with depleted uranium or thorium that get enriched during the consumption of the first part of the enriched uranium. (authors)

Popa-Simil, L. [LAVM LLC, Los Alamos (United States)

2012-07-01T23:59:59.000Z

369

Heat pipes for wing leading edges of hypersonic vehicles. Final report  

SciTech Connect (OSTI)

Wing leading edge heat pipes were conceptually designed for three types of vehicle: an entry research vehicle, aero-space plane, and advanced shuttle. A full scale, internally instrumented sodium/Hastelloy X heat pipe was successfully designed and fabricated for the advanced shuttle application. The 69.4 inch long heat pipe reduces peak leading edge temperatures from 3500 F to 1800 F. It is internally instrumented with thermocouples and pressure transducers to measure sodium vapor qualities. Large thermal gradients and consequently large thermal stresses, which have the potential of limiting heat pipe life, were predicted to occur during startup. A test stand and test plan were developed for subsequent testing of this heat pipe. Heat pipe manufacturing technology was advanced during this program, including the development of an innovative technique for wick installation.

Boman, B.L.; Citrin, K.M.; Garner, E.C.; Stone, J.E.

1990-01-01T23:59:59.000Z

370

Water quality Water quantity  

E-Print Network [OSTI]

01-1 · Water quality · Water quantity · Remediation strategies MinE 422: Water Resources: Younger, Banwart and Hedin. 2002. Mine Water. Hydrology, Pollution, Remediation. Impacts of mining on water mining ­ Often the largest long term issue ­ Water quality affected, surface/ground water pollution

Boisvert, Jeff

371

Water quality Water quantity  

E-Print Network [OSTI]

· Water quality · Water quantity · Remediation strategies MinE 422: Water Resources: Younger, Banwart and Hedin. 2002. Mine Water. Hydrology, Pollution, Remediation. Impacts of mining on water mining ­ Often the largest long term issue ­ Water quality affected, surface/ground water pollution

Boisvert, Jeff

372

Early science runs prepare Sequoia for national security missions |  

National Nuclear Security Administration (NNSA)

Early science runs prepare Sequoia for national security missions | Early science runs prepare Sequoia for national security missions | National Nuclear Security Administration Our Mission Managing the Stockpile Preventing Proliferation Powering the Nuclear Navy Emergency Response Recapitalizing Our Infrastructure Continuing Management Reform Countering Nuclear Terrorism About Us Our Programs Our History Who We Are Our Leadership Our Locations Budget Our Operations Media Room Congressional Testimony Fact Sheets Newsletters Press Releases Speeches Events Social Media Video Gallery Photo Gallery NNSA Archive Federal Employment Apply for Our Jobs Our Jobs Working at NNSA Blog Home > NNSA Blog > Early science runs prepare Sequoia for national ... Early science runs prepare Sequoia for national security missions Posted By Office of Public Affairs

373

Hitting a Home Run for Clean Energy | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Hitting a Home Run for Clean Energy Hitting a Home Run for Clean Energy Hitting a Home Run for Clean Energy March 12, 2012 - 11:39am Addthis John Chu John Chu Communications Specialist with the Office of Energy Efficiency and Renewable Energy Spring. With gentle breezes, blooming flowers, and warm sunshine, the season marks the beginning of fun outdoor activities-picnics, camping, hikes, and the classic American pastime-baseball. In the past five years, major league baseball teams have increasingly made strides in greening up their stadiums. Here are several examples of teams that are hitting a home run for clean energy: Cleveland Indians Progressive Field - As the first American League ballpark to use solar energy back in 2007, the stadium boasts an upper deck solar panel array. The electricity produced from its 42 solar panels is

374

Brent Run Generating Station Biomass Facility | Open Energy Information  

Open Energy Info (EERE)

Brent Run Generating Station Biomass Facility Brent Run Generating Station Biomass Facility Jump to: navigation, search Name Brent Run Generating Station Biomass Facility Facility Brent Run Generating Station Sector Biomass Facility Type Landfill Gas Location Genesee County, Michigan Coordinates 43.0777289°, -83.6773928° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":43.0777289,"lon":-83.6773928,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

375

Hitting a Home Run for Clean Energy | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Hitting a Home Run for Clean Energy Hitting a Home Run for Clean Energy Hitting a Home Run for Clean Energy March 12, 2012 - 11:39am Addthis John Chu John Chu Communications Specialist with the Office of Energy Efficiency and Renewable Energy Spring. With gentle breezes, blooming flowers, and warm sunshine, the season marks the beginning of fun outdoor activities-picnics, camping, hikes, and the classic American pastime-baseball. In the past five years, major league baseball teams have increasingly made strides in greening up their stadiums. Here are several examples of teams that are hitting a home run for clean energy: Cleveland Indians Progressive Field - As the first American League ballpark to use solar energy back in 2007, the stadium boasts an upper deck solar panel array. The electricity produced from its 42 solar panels is

376

Run-time optimization of adaptive irregular applications  

E-Print Network [OSTI]

adaptive irregular applications for parallel execution, a common observation is that the effectiveness of the optimizing transformations depends on programs' input data and their dynamic phases. This dissertation presents a set of run-time optimization...

Yu, Hao

2004-11-15T23:59:59.000Z

377

NERSC: Running Jobs Kjiersten Fagnan" NERSC User Services Group...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

NERSC: Running Jobs Kjiersten Fagnan" NERSC User Services Group" " " February 3, 2014 Jobs at NERSC * Most j obs a re p arallel, u sing 1 0s t o 1 00,000+ c ores * Produc8on r uns...

378

Design of running-man, a bipedal robot  

E-Print Network [OSTI]

are the muscles of the robot. Two types of RC servo motorsforce at the end. This robot is based on a previous robot ofSpecifications of Running Man robot prototype Hip range of

Chen, Jin

2011-01-01T23:59:59.000Z

379

Inventories and the short-run dynamics of commodity prices  

E-Print Network [OSTI]

I examine the behavior of inventories and their role in the short-run dynamics of commodity production and price. Competitive producers of a storable commodity react to price changes by balancing costs of changing production ...

Pindyck, Robert S.

1990-01-01T23:59:59.000Z

380

First operational experience with the CMS Run Control System  

E-Print Network [OSTI]

The Run Control System of the Compact Muon Solenoid (CMS) experiment at CERN's new Large Hadron Collider (LHC) controls the sub-detector and central data acquisition systems and the high-level trigger farm of the experiment. ...

Bauer, Gerry P.

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Office of Fossil Energy Continues Long-Running Minority Educational  

Broader source: Energy.gov (indexed) [DOE]

Fossil Energy Continues Long-Running Minority Educational Fossil Energy Continues Long-Running Minority Educational Research Program Office of Fossil Energy Continues Long-Running Minority Educational Research Program April 19, 2012 - 11:41am Addthis Annie Whatley Annie Whatley Deputy Director, Office of Minority Economic Impact Editor's Note: This article is cross-posted from the Office of Fossil Energy. Four projects that will strengthen and promote U.S. energy security, scientific discovery and economic competitiveness while producing a diverse next generation of scientists and engineers have been selected as part of the Energy Department's long-running minority educational research program. The awards - presented under the Historically Black Colleges and Universities and Other Minority Institutions program - are $200,000 each

382

DOE Continues Long-Running Minority Educational Research Program |  

Broader source: Energy.gov (indexed) [DOE]

Continues Long-Running Minority Educational Research Program Continues Long-Running Minority Educational Research Program DOE Continues Long-Running Minority Educational Research Program April 19, 2012 - 1:00pm Addthis Washington, DC - Four projects that will strengthen and promote U.S. energy security, scientific discovery and economic competitiveness while producing a diverse next generation of scientists and engineers have been selected as part of the U.S. Department of Energy's (DOE) long running minority educational research program. The DOE awards - presented under the Historically Black Colleges and Universities and Other Minority Institutions (HBCU/OMIs) program - are $200,000 each for projects that will address high-performance materials for long-term fossil energy applications, such as advanced ultrasupercritical

383

A Record Run for the APS X-ray Source  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

2004 | 2003 | 2002 | 2001 2000 Subscribe to APS News rss feed A Record Run for the APS X-ray Source FEBRUARY 23, 2012 Bookmark and Share The APS storage ring. X-ray beams and...

384

Reactivating personal memory 1 RUNNING HEAD: Reactivating personal memory  

E-Print Network [OSTI]

Reactivating personal memory 1 RUNNING HEAD: Reactivating personal memory Modifying memory: Selectively enhancing and updating personal memories for a museum; Reactivating personal memory 2 Abstract Memory can be modified when reactivated

Schacter, Daniel

385

TianRun UILK LLC | Open Energy Information  

Open Energy Info (EERE)

Minnesota Sector: Wind energy Product: Minnesota-based joint venture formed by TianRun USA, Horizon Wind, and Dakota Wind to develop the UILK wind farm project in Minnesota....

386

Gas-chromatographic analysis of straight-run gasolines  

SciTech Connect (OSTI)

A method has been developed for the gas chromatographic determination of the individual hydrocarbons in a wide fraction of straight-run gasoline, using a simple chromatograph equipped with two capillary columns coated with stationary phases of differing polarity in conjunction with a system for the automated treatment of the data. About 150 hydrocarbons present in straight-run gasolines were identified; their retention indices were calculated for a linear temperature programmed regime.

Kvasova, V.A.; Leont'eva, S.A.; Grinberg, A.A.; Rabinovich, A.B.; Shurygina, N.N.

1986-11-10T23:59:59.000Z

387

Seismic response and damping tests of small bore LMFBR piping and supports  

SciTech Connect (OSTI)

Seismic testing and analysis of a prototypical Liquid Metal Fast Breeder Reactor (LMFBR) small bore piping system is described. Measured responses to simulated seismic excitations are compared with analytical predictions based on NRC Regulatory Guide 1.61 and measured system damping values. The test specimen was representative of a typical LMFBR insulated small bore piping system, and it was supported from a rigid test frame by prototypic dead weight supports, mechanical snubbers and pipe clamps.

Barta, D.A.; Anderson, M.J.; Severud, L.K.; Lindquist, M.R.

1984-01-01T23:59:59.000Z

388

Parametric calculations of fatigue-crack growth in piping. [PWR; BWR  

SciTech Connect (OSTI)

A major objective of this program is to provide data that can be used to formulate recommended revisions to ASME Section XI and regulatory requirements for inservice inspection of piping and pressure vessels. This study presents calculations of the growth of piping flaws produced by fatigue. Flaw growth was predicted as a function of the initial flaw size, the level and number of stress cycles, the piping material, and environmental factors.

Simonen, F.A.; Goodrich, C.W.

1983-03-01T23:59:59.000Z

389

Technical Letter Report - Analysis of Ultrasonic Data on Piping Cracks at Ignalina Nuclear Power Plant Before and After Applying a Mechanical Stress Improvement Process, JCN-N6319, Task 2  

SciTech Connect (OSTI)

Pacific Northwest National Laboratory (PNNL) is assisting the United States Nuclear Regulatory Commission (NRC) in developing a position on the management of primary water stress corrosion cracking (PWSCC) in piping systems previously analyzed for leak-before-break (LBB). Part of this work involves determining whether inspections alone are sufficient or if inspections plus mitigation techniques are needed. The work described in this report addresses the reliability of ultrasonic phased-array (PA) examinations for inspection of cracks that have been subjected to the mitigation method of mechanical stress improvement process (MSIP). It is believed that stresses imparted during MSIP may make ultrasonic crack responses in piping welds more difficult to detect and accurately characterize. To explore this issue, data were acquired, both before and after applying MSIP, and analyzed from cracked areas in piping at the Ignalina Nuclear Power Plant (INPP) in Lithuania. This work was performed under NRC Project JCN-N6319, PWSCC in Leak-Before-Break Systems.

Anderson, Michael T.; Cumblidge, Stephen E.; Crawford, Susan L.

2008-02-26T23:59:59.000Z

390

Equipment and Piping Labeling Assessment plan - Developed By NNSA/Nevada Site Office Facility Representative Division  

Broader source: Energy.gov (indexed) [DOE]

EQUIPMENT AND PIPING LABELING EQUIPMENT AND PIPING LABELING Assessment Plan NNSA/Nevada Site Office Facility Representative Division Performance Objective: To verify that facility equipment and piping are labeled in a manner such that facility personnel are able to positively identify equipment they operate. To ensure that an effective labeling program is in effect to reduce operator and maintenance errors from incorrect identification of equipment, to increase training effectiveness by tracing the actual facility system as opposed to tracing its schematic, and to reduce personnel exposure to radiation and hazardous materials. This assessment provides a basis for evaluating the effectiveness of the contractor's program for labeling equipment and piping and for establishing compliance

391

Arrangement for connecting a fiber-reinforced plastic pipe to a stainless steel flange  

DOE Patents [OSTI]

Arrangement for connecting a fiber-reinforced plastic pipe (18) to a stainless steel flange (12, 16), in which the end of the fiber-reinforced plastic pipe (18) is accommodated in a ring-shaped groove (12a, 16a) in the flange (12, 16), the groove conforming to the dimensions of the fiber-reinforced plastic pipe (18), where the gap remaining between the end of the fiber-reinforced plastic pipe (18) and the ring-shaped groove (12a, 16a) is filled with a sealant (19).

Allais, Arnaud (D-30625 Hannover, DE); Hoffmann, Ernst (D-30855 Langenhagen, DE)

2008-02-05T23:59:59.000Z

392

E-Print Network 3.0 - auto-pipe design system Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

environment 2, 4 sup- ports the design and deployment... of streaming applications on hybrid systems. Auto-Pipe already contains a feder- ated simulation infrastructure... to...

393

Testing of a loop heat pipe experimental apparatus under varied acceleration.  

E-Print Network [OSTI]

??An experimental apparatus was designed and fabricated to test a Loop Heat Pipe under varied acceleration. The experiment consisted of both flight and ground testing (more)

Kurwitz, Richard Cable

2012-01-01T23:59:59.000Z

394

An Investigation and Characterization of Metal Foam Filled Double-Pipe Heat Exchangers.  

E-Print Network [OSTI]

??The effect of using metal foams in double-pipe heat exchangers is investigated in this work. The advantages and drawbacks of using metal foams in these (more)

Chen, Xi

2014-01-01T23:59:59.000Z

395

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS  

SciTech Connect (OSTI)

Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. Bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple castiron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs with the pipe in service by traveling through the pipe, cleaning each joint surface, and installing a stainless-steel sleeve lined with an epoxy-impregnated felt across the joint. This approach will save considerable time and labor, minimize excavation, avoid traffic disruption, and eliminate any requirement to interrupt service to customers (which would result in enormous expense to utilities). Technical challenges include: (1) repair sleeves must compensate for diametric variation and eccentricity of old cast-iron pipes; (2) the assembly must travel long distances through pipes containing debris; (3) the pipe wall must be effectively cleaned in the immediate area of the joint to assure good bonding of the sleeve; and (4) an innovative bolt-on entry fitting is required to conduct safe repair operations on live mains.

Kiran M. Kothari; Gerard T. Pittard

2005-07-01T23:59:59.000Z

396

Heat Pipe Performance Enhancement with Binary Mixture Fluids that Exhibit Strong Concentration Marangoni Effects  

E-Print Network [OSTI]

1.4 Heat Pipes for Waste Heat Recovery..analysis involving waste heat recovery of solar energyOverview of Industrial Waste Heat Recovery Technologies for

Armijo, Kenneth Miguel

2011-01-01T23:59:59.000Z

397

IPIRG-2 task 1 - pipe system experiments with circumferential cracks in straight-pipe locations. Final report, September 1991--November 1995  

SciTech Connect (OSTI)

This report presents the results from Task 1 of the Second International Piping Integrity Research Group (IPIRG-2) program. The IPIRG-2 program is an international group program managed by the US Nuclear Regulatory Commission (US NRC) and funded by a consortium of organizations from 15 nations including: Bulgaria, Canada, Czech Republic, France, Hungary, Italy, Japan, Republic of Korea, Lithuania, Republic of China, Slovak Republic, Sweden, Switzerland, the United Kingdom, and the United States. The objective of the program was to build on the results of the IPIRG-1 and other related programs by extending the state-of-the-art in pipe fracture technology through the development of data needed to verify engineering methods for assessing the integrity of nuclear power plant piping systems that contain defects. The IPIRG-2 program included five main tasks: Task 1 - Pipe System Experiments with Flaws in Straight Pipe and Welds Task 2 - Fracture of Flawed Fittings Task 3 - Cyclic and Dynamic Load Effects on Fracture Toughness Task 4 - Resolution of Issues From IPIRG-1 and Related Programs Task 5 - Information Exchange Seminars and Workshops, and Program Management. The scope of this report is to present the results from the experiments and analyses associated with Task 1 (Pipe System Experiments with Flaws in Straight Pipe and Welds). The rationale and objectives of this task are discussed after a brief review of experimental data which existed after the IPIRG-1 program.

Scott, P.; Olson, R.; Marschall, C.; Rudland, D. [and others

1997-02-01T23:59:59.000Z

398

Federal Energy and Water Management Awards 2014  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

be deposited in areas of running water, such as a stream. Inset photo: Four foot diameter tanks in the main tank room are used to house medium-sized fish or small schooling fish...

399

Are we putting in hot water?  

E-Print Network [OSTI]

, and habitat loss will increase. And while slightly warmer water may not sound so bad to many of us, its effectAre we putting our fish in hot water? Global warming and the world's fisheries · Hot, hungry, and gasping for air · Shrinking fish and fewer babies? · Global warming puts fish on the run · Warm water

Combes, Stacey A.

400

Minimizing Water Production from Unconventional Gas Wells Using a Novel Environmentally Benign Polymer Gel System  

E-Print Network [OSTI]

Excess water production is a major economic and environmental problem for the oil and gas industry. The cost of processing excess water runs into billions of dollars. Polymer gel technology has been successfully used in controlling water influx...

Gakhar, Kush

2012-02-14T23:59:59.000Z

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Testability of a heat pipe cooled thermionic reactor  

Science Journals Connector (OSTI)

As part of the Air Force Phillips Laboratory thermionics program Rocketdyne performed a design study for an in?core thermionic fuel element (TFE) heat pipe cooled reactor power system. This effort involved a testability evaluation that was performed starting with testing of individual components followed by testing at various stages of fabrication and concluding with full system acceptance and qualification testing. It was determined that the system could be thoroughly tested to ensure a high probability of successful operation in space after launch.

Richard E. Durand

1992-01-01T23:59:59.000Z

402

Piping retrofit reduces valve-damaging flow vibration  

SciTech Connect (OSTI)

This article describes how excessive flow-induced vibration was escalating safety relief valve maintenance at an alarming pace until simple piping modifications eliminated the problem. Public Service Co. of Colorado's (PSCO) Cherokee Station Unit 4 had been experiencing excessive hot and cold reheat safety valve maintenance. From 1990 through 1993, expenditures exceeded $150,000, including a complete refurbishing in 1990. Furthermore, from 1990 to 1992 the incurred costs of contracting VR certificate repairs accumulated to more than $50,000. Such exorbitant maintenance costs were unique among PSCO's generating system.

Webb, M.; Ellenberger, P.

1995-01-01T23:59:59.000Z

403

Efficient Water Use & Management  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Water Use Water Use Goal 4: Efficient Water Use & Management Aware of the arid climate of northern New Mexico, water reduction and conservation remains a primary concern at LANL. Energy Conservation» Efficient Water Use & Management» High Performance Sustainable Buildings» Greening Transportation» Green Purchasing & Green Technology» Pollution Prevention» Science Serving Sustainability» ENVIRONMENTAL SUSTAINABILITY GOALS at LANL Sanitary Effluent Reclamation Facility: Using reverse osmosis to superpurify water reduces bacterial growth and mineral build up, allowing the system to circulate water up to four times in the High-Performance Computing Center. LANSCE cooling towers circulate water for evaporative cooling. LANL is testing methods for decreased water and chemical use at this location. Gabriel C. Herrera of LANL checks gauges on piping inside the Sanitary Effluent Reclamation Facility (SERF). Sanitary Effluent Reclamation Facility: In an effort to reduce water consumption, the SERF was constructed to treat and process sanitary effluent water used for cooling the supercomputing facilities. Sandia Canyon: Water from the SERF is used to keep the wetlands healthy to transform hexavalent into trivalent chromium.

404

Automatic Running Planning for Omni-Directional Mobile Robot By Genetic Programming  

E-Print Network [OSTI]

because these OMRs have the running mechanism of wheels installed with free rollers or balls[1-roller running system. The motion analysis is also discussed to realize the autonomic off-road running. In order-directional mobile robot, crawler-roller running system, genetic programming, obstacle, running planning. 1

Fernandez, Thomas

405

Beam Pipe HOM Absorber for 750 MHz RF Cavity Systems  

SciTech Connect (OSTI)

This joint project of Muons, Inc., Cornell University and SLAC was supported by a Phase I and Phase II grant monitored by the SBIR Office of Science of the DOE. Beam line HOM absorbers are a critical part of future linear colliders. The use of lossy materials at cryogenic temperatures has been incorporated in several systems. The design in beam pipes requires cylinders of lossy material mechanically confined in such a way as to absorb the microwave energy from the higher-order modes and remove the heat generated in the lossy material. Furthermore, the potential for charge build-up on the surface of the lossy material requires the conductivity of the material to remain consistent from room temperature to cryogenic temperatures. In this program a mechanical design was developed that solved several design constraints: a) fitting into the existing Cornell load vacuum component, b) allowing the use of different material compositions, c) a thermal design that relied upon the compression of the lossy ceramic material without adding stress. Coating experiments were performed that indicated the design constraints needed to fully implement this approach for solving the charge build-up problem inherent in using lossy ceramics. In addition, the ACE3P program, used to calculate the performance of lossy cylinders in beam pipes in general, was supported by this project. Code development and documentation to allow for the more wide spread use of the program was a direct result of this project was well.

Johnson, Rolland; Neubauer, Michael

2014-10-29T23:59:59.000Z

406

Mill Run Wind Power Project | Open Energy Information  

Open Energy Info (EERE)

Wind Power Project Wind Power Project Jump to: navigation, search Name Mill Run Wind Power Project Facility Mill Run Wind Power Project Sector Wind energy Facility Type Commercial Scale Wind Facility Status In Service Owner NextEra Energy Resources Developer Atlantic Renewable Energy Energy Purchaser Exelon Location Mill Run PA Coordinates 39.921026°, -79.388666° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.921026,"lon":-79.388666,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

407

Boise Buses Running Strong with Clean Cities | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Boise Buses Running Strong with Clean Cities Boise Buses Running Strong with Clean Cities Boise Buses Running Strong with Clean Cities May 28, 2013 - 12:05pm Addthis Working with Republic Services, the city of Boise and Valley Regional Transit, Treasure Valley Clean Cities built four compressed natural gas (CNG) fueling stations that allowed all three organizations to transition to CNG vehicles. | Photo courtesy of Valley Regional Transit. Working with Republic Services, the city of Boise and Valley Regional Transit, Treasure Valley Clean Cities built four compressed natural gas (CNG) fueling stations that allowed all three organizations to transition to CNG vehicles. | Photo courtesy of Valley Regional Transit. Shannon Brescher Shea Communications Manager, Clean Cities Program What are the key facts?

408

Nature of Running FOR4934 section 146D, 1 credit hr  

E-Print Network [OSTI]

N-Z, jmdavis@ufl.edu Taylor Stein, Ph.D. (ecotourism and nature-based recreation), 345 N-Z, tstein (part 2)? Ecotourism principles and running. Run. March 28. Is running for everyone (part 3)? Barriers

Watson, Craig A.

409

Development of design tools for ground-source heat pump piping  

SciTech Connect (OSTI)

High-density polyethylene (HDPE) piping systems with thermal fusion joints have several attractive characteristics when applied to ground-source heat pump (GSHP) systems. However, engineers may not have access to GSHP piping and fitting head loss data or to easy-to-use tools for piping design/pump sizing. Some GSHP systems have been conservatively designed with pumps that are grossly oversized. Systems have been installed in which the pump energy use exceeds heat pump energy. In some cases, engineers completely avoid the use of GSHPs because they are not comfortable with the low level of sophistication and the difficulty of using current GSHP design tools. A project has been undertaken to measure head loss in common GSHP fittings and pipe design and to develop a set of easy-to-use and accurate piping design tools. These tools will not only give designers more confidence but will reduce the cost of GSHPs by reducing oversizing and piping complexity that has been common in some installations. The results of this project are presented in a format similar to the tools currently used by practicing HVAC design engineers. Tables for fitting equivalent lengths and k-factors have been developed. Log-log plots of head loss vs. flow rate and liquid velocity are presented in a format similar to the plots appearing in the 1993 ASHRAE Handbook--Fundamentals. These tables and charts for HDPE piping components complement existing charts and tables for traditional piping systems.

Kavanaugh, S. [Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Mechanical Engineering

1998-10-01T23:59:59.000Z

410

An evaluation of the thermal characteristics of a flat plate heat pipe spreader  

E-Print Network [OSTI]

loss could bc determined. Duc to the axisymmetric nature of the i. echnique, it was necessary to define the effective radial heat pipe dimensions. ln the case of a disk shaped flat heat pipe, the effective radius is equal to the radius of the disk...

Chesser, Jason Blake

2000-01-01T23:59:59.000Z

411

A Power-Law Formulation of Laminar Flow in Short Pipes Max Sherman  

E-Print Network [OSTI]

A Power-Law Formulation of Laminar Flow in Short Pipes Max Sherman Indoor Environment Program ABSTRACT This report develops a theoretical description of the hydrodynamic relationship based on a power pipes can be described with a simple power law dependence on pressure, but that the exponent

412

Heat pipe technology: a bibliography with abstracts. Quarterly update, April-June 1980  

SciTech Connect (OSTI)

This is the second quarterly update for 1980 in the Heat Pipe Technology Bibliographic Series. In addition to the abstract and bibliographic data for each item, the following indexes are provided: authors; title/keywords; and patents by number, author or permuted title. This quarter contains a large number of citations on heat pipe applications in energy conservation and also in solar energy systems.

Srinivasan, R.; Feldman, K.T. Jr. (eds.)

1980-08-01T23:59:59.000Z

413

Heat pipe technology. A bibliography with abstracts. Quarterly update, October-December, 1980  

SciTech Connect (OSTI)

This bibliography presents 57 pages of citations and abstracts of publications on heat pipe uses, design, fabrication, performance, and testing. Author and permuted title indexes are provided. Heat pipe related patents are listed and indexed separately by author, title and patent number. (LCL)

Not Available

1980-12-31T23:59:59.000Z

414

Chapter 5 - Solar Water-Heating Systems  

Science Journals Connector (OSTI)

Abstract Chapter 5 is on solar water-heating systems. Both passive and active systems are described. Passive systems include thermosiphon and integrated collector storage systems. The former include theoretical performance of thermosiphon solar water heaters, reverse circulation in thermosiphon systems, vertical against horizontal tank configurations, freeze protection, and tracking thermosiphons. Subsequently, active systems are described, which include direct circulation systems, indirect water-heating systems, air water-heating systems, heat pump systems and pool heating systems, which include the analysis of various heat losses like evaporation, radiation, convection heat losses, make-up water load, and solar radiation-heat gain. Then the characteristics and thermal analysis of heat storage systems for both water and air systems are presented. The module and array design methods are then described and include the effects of shading, thermal expansion, galvanic corrosion, array sizing, heat exchangers, pipe and duct losses, partially shaded collectors and over-temperature protectionfollowed by an analysis of the characteristics of differential thermostats. Finally, methods to calculate the hot water demand are given as well as a review of international standards used to evaluate the solar water heaters performance. The chapter includes also simple system models and practical considerations for the setup of solar water-heating systems, which include: pipes, supports and insulation; pumps; valves and instrumentation.

Soteris A. Kalogirou

2014-01-01T23:59:59.000Z

415

Modern Compressed Air Piping Selection and Design Can Have a Great Impact on Your Compressed Air Energy Dollars  

E-Print Network [OSTI]

This paper introduces new concepts in compressed air piping, sizing, and system design beyond the conventional pipe sizing charts and standard system layout guide lines. The author shows how compressed air velocity has a very significant impact...

Van Ormer, H.

2005-01-01T23:59:59.000Z

416

Status and performance of the CDF Run II silicon detector  

SciTech Connect (OSTI)

The CDF Run II silicon detector with its 8 layers of double- and single-sided silicon microstrip sensors and a total 722,432 readout channels is one of the largest silicon detector devices currently in use by a HEP experiment. We report our experience commissioning and operating this complex device during the first 4 years of Run II. As the luminosity delivered by the Tevatron increases, we have observed measurable effects of radiation damage in studies of charge collection and noise versus applied bias voltage at many different integrated luminosities. We discuss these studies and their impact on the expected lifetime of the detector.

Boveia, A.; /UC, Santa Barbara

2005-01-01T23:59:59.000Z

417

The gradient flow running coupling with twisted boundary conditions  

E-Print Network [OSTI]

We study the gradient flow for Yang-Mills theories with twisted boundary conditions. The perturbative behavior of the energy density $\\langle E(t)\\rangle$ is used to define a running coupling at a scale given by the linear size of the finite volume box. We compute the non-perturbative running of the pure gauge $SU(2)$ coupling constant and conclude that the technique is well suited for further applications due to the relatively mild cutoff effects of the step scaling function and the high numerical precision that can be achieved in lattice simulations. We also comment on the inclusion of matter fields.

A. Ramos

2014-09-04T23:59:59.000Z

418

Award Recipient of ENERGY STAR Challenge for Industry JM Eagle Wharton Plastic Pipe Manufacturing Plant  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Wharton Plastic Pipe Manufacturing Plant JM Eagle 10807 U.S. 59 Road Wharton, TX 77488 The Wharton Plastic Pipe Manufacturing Plant, located on an old cattle field, opened in 1985 by first manufacturing PVC pipe. The manufacturing of injection molding was added in 1988, corrugated pipe was added in 2009, and corrugated fittings were added in 2011. There are expectations for the plant to expand into manufacturing PE pipe fittings in the future. The Wharton plant achieved the ENERGY STAR Challenge for Industry in June 2010. The plant achieved a 15.5% reduction in energy intensity in the first year following its baseline. The success of achieving the Challenge for Industry came principally from an energy conservation program that focused on not operating equipment other than that needed for current production,

419

The development of mathematical model for cool down technique in the LNG pipe-line system  

SciTech Connect (OSTI)

An increase in demand for LNG as energy source can be expected since LNG is clean, in stable supply and produces low levels of carbon dioxide. Expansion of various LNG plants is planned. However, the optimal design of the LNG pipe-line systems has not yet been determined since the LNG transport phenomenon is not yet fully understood clearly. For example, in the LNG pipe-line system, large temperature gradients occur when the LNG transport starts. Therefore, although the necessity to cool down the pipe in order to minimize serious deformation is clear, the studies to understand it quantitatively have not been carried out. In this study, experiments on a commercial plant scale and a computer simulation, made up of structural analysis and two phase flow simulation were carried out to establish a prediction model of pipe deformation and to understand the phenomenon in the pipe.

Hamaogi, Kenji; Takatani, Kouji; Kosugi, Sanai; Fukunaga, Takeshi

1999-07-01T23:59:59.000Z

420

A method to define degradation mechanisms and failure rates for piping  

SciTech Connect (OSTI)

This paper describes a process currently being employed to develop an easy to use procedure for identifying degradation mechanisms and computing failure rates for piping. The procedure includes guidelines to identify degradation mechanisms that may be present in piping systems. The identified mechanisms along with other system or segment specific features of the piping determine the piping failure rate. Implementation of this procedure requires a data or knowledge base that reflects the service and operational conditions that affect piping reliability and availability. This procedure is being developed for use by plant engineers, and will not require expertise in probability, stress, or fracture mechanics analyses. The method can be used to provide input for performing plant safety assessments and defining risk based inspection programs.

Gamble, R.M. [Sartrex Corp., Rockville, MD (United States); Gosselin, S.R. [EPRI NDE Center, Charlotte, NC (United States)

1996-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Water, water everywhere  

Science Journals Connector (OSTI)

... available water resources, either locally or globally, are by no means exhausted. At present desalination -- the removal of salt from sea water or brackish water -- is very ... or brackish water -- is very expensive, mainly because it consumes so much energy. Desalination provides less than 0.2 per cent of all the water used in the world ...

Philip Ball

2000-01-27T23:59:59.000Z

422

Effects of banked-curves on ankle and knee kinematics during running.  

E-Print Network [OSTI]

??Given that a greater injury incidence has been shown for indoor versus outdoor running tracks, attention to mechanical differences in curve running is warranted. Hence, (more)

De Garie, Luc.

2006-01-01T23:59:59.000Z

423

Best Management Practice: Water Management Planning | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Best Management Practice: Water Management Planning Best Management Practice: Water Management Planning Best Management Practice: Water Management Planning October 7, 2013 - 3:03pm Addthis A successful water management program starts with developing a comprehensive water management plan. This plan should be included within existing facility operating plans. Water management plans should provide clear information about how a facility uses water from the time it is piped in to its ultimate disposal. Knowing how water is used and what it costs enables Federal agencies to make appropriate water management decisions. Overview Federal facility water management plans should include the following: Water Use Policy Statement and Goals Senior management should indicate support for water efficiency in a material way. This can be done in two ways:

424

Lead in Your Drinking Water Lead (Pb) is an extremely toxic heavy metal that unfortunately occurs widely in  

E-Print Network [OSTI]

Lead in Your Drinking Water Lead (Pb) is an extremely toxic heavy metal that unfortunately occurs of metallic lead in the soil (4) Drinking water ­ water as it leaves the treatment plant has no lead;Common metals used for the supply pipe are lead, copper and galvanized iron. Also in the system

Maynard, J. Barry

425

Light Water Reactor Sustainability (LWRS) Program - R&D Roadmap for  

Broader source: Energy.gov (indexed) [DOE]

Light Water Reactor Sustainability (LWRS) Program - R&D Roadmap Light Water Reactor Sustainability (LWRS) Program - R&D Roadmap for Non-Destructive Evaluation (NDE) of Fatigue Damage in Piping Light Water Reactor Sustainability (LWRS) Program - R&D Roadmap for Non-Destructive Evaluation (NDE) of Fatigue Damage in Piping Light water reactor sustainability (LWRS) nondestructive evaluation (NDE) Workshops were held at Oak Ridge National Laboratory (ORNL) during July 30th to August 2nd, 2012. This activity was conducted to help develop the content of the NDE R&D roadmap for the materials aging and degradation (MAaD) pathway of the LWRS program. The workshops focused on identifying NDE R&D needs in four areas: cables, concrete, reactor pressure vessel, and piping. A selected group of subject matter experts (SMEs) from DOE national

426

Stress intensity factors and fatigue growth of a surface crack in a drill pipe during rotary drilling operation  

E-Print Network [OSTI]

known that drill pipe fatigue in oil-gas drilling operations represents more than 30% of the drill pipeStress intensity factors and fatigue growth of a surface crack in a drill pipe during rotary drilling operation Ngoc Ha Daoa, , Hedi Sellamia aMines ParisTech, 35 rue Saint-Honoré, 77305 Fontainebleau

Paris-Sud XI, Université de

427

Power Systems Development Facility Gasification Test Run TC11  

SciTech Connect (OSTI)

This report discusses Test Campaign TC11 of the Kellogg Brown & Root, Inc. (KBR) Transport Gasifier train with a Siemens Westinghouse Power Corporation (Siemens Westinghouse) particle filter system at the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama. The Transport Gasifier is an advanced circulating fluidized-bed gasifier designed to operate as either a combustor or a gasifier in air- or oxygen-blown mode of operation using a particulate control device (PCD). Test run TC11 began on April 7, 2003, with startup of the main air compressor and the lighting of the gasifier start-up burner. The Transport Gasifier operated until April 18, 2003, when a gasifier upset forced the termination of the test run. Over the course of the entire test run, gasifier temperatures varied between 1,650 and 1,800 F at pressures from 160 to 200 psig during air-blown operations and around 135 psig during enriched-air operations. Due to a restriction in the oxygen-fed lower mixing zone (LMZ), the majority of the test run featured air-blown operations.

Southern Company Services

2003-04-30T23:59:59.000Z

428

Recto Running Head 1 Available Potential Energy and Exergy in  

E-Print Network [OSTI]

Recto Running Head 1 Available Potential Energy and Exergy in Stratified Fluids R�emi Tailleux, thermodynamic efficiencies, buoyancy forcing. Abstract Lorenz's theory of available potential energy (APE) remains the main framework for studying the atmospheric and oceanic energy cycles. Because the APE

Tailleux, Remi

429

The long-run evolution of energy prices  

E-Print Network [OSTI]

I examine the long-run behavior of oil, coal, and natural gas prices, using up to 127 years of data, and address the following questions: What does over a century of data tell us about the stochastic dynamics of price ...

Pindyck, Robert S.

1999-01-01T23:59:59.000Z

430

Life on the Edge: Monitoring and Running A Very Large  

E-Print Network [OSTI]

Life on the Edge: Monitoring and Running A Very Large Perforce Installation Dan Bloch, Google March of additional hardware or software. Introduction Perforce scales astonishingly well, but many if not most sites are buying faster hardware or splitting the depot. Hardware upgrades are indeed often the right solution

Tomkins, Andrew

431

Reconfigurable Run-Time Support for Distributed Service Component Architectures  

E-Print Network [OSTI]

.lastname@inria.fr ABSTRACT SCA (Service Component Architecture) is an OASIS stan- dard for describing service-oriented to SCA and en- ables both introspecting and reconfiguring service-oriented architectures at run-Based Software Engineering (CBSE), Middle- ware, Service Component Architecture (SCA), Service-Oriented

Paris-Sud XI, Université de

432

CSEM WP 133 The Long-Run Effects of  

E-Print Network [OSTI]

is a program of the University of California Energy Institute, a multi- campus research unit of the University This paper is part of the Center for the Study of Energy Markets (CSEM) Working Paper Series. CSEM;The Long-Run Effects of Real-Time Electricity Pricing by Severin Borenstein1 June 2004 Abstract

California at Berkeley. University of

433

Running coupling effects in the evolution of jet quenching  

E-Print Network [OSTI]

We study the consequences of including the running of the QCD coupling in the equation describing the evolution of the jet quenching parameter $\\hat q$ in the double logarithmic approximation. To start with, we revisit the case of a fixed coupling, for which we obtain exact solutions valid for generic values of the transverse momentum (above the medium saturation scale) and corresponding to various initial conditions. In the case of a running coupling, we construct approximate solutions in the form of truncated series obtained via successive iterations, whose convergence is well under control. We thus deduce the dominant asymptotic behavior of the renormalized $\\hat q$ in the limit of a large evolution time $Y\\equiv\\ln(L/\\lambda)$, with $L$ the size of the medium and $\\lambda$ the typical wavelength of a medium constituent. We show that the asymptotic expansion is universal with respect to the choice of the initial condition at $Y=0$ and, moreover, it is remarkably similar to the corresponding expansion for the saturation momentum of a shockwave (a large nucleus). As expected, the running of the coupling significantly slows down the increase of $\\hat q$ with $Y$ in the asymptotic regime at $Y\\gg 1$. For the phenomenologically interesting value $Y\\simeq 3$, we find an enhancement factor close to 3, independently of the initial condition and for both fixed and running coupling.

E. Iancu; D. N. Triantafyllopoulos

2014-05-14T23:59:59.000Z

434

On the possible running of the cosmological "constant"  

E-Print Network [OSTI]

Despite the many outstanding cosmological observations leading to a strong evidence for a nonvanishing cosmological constant (CC) term in the gravitational field equations, the theoretical status of this quantity seems to be lagging well behind the observational successes. It thus seems timely to revisit some fundamental aspects of the CC term in Quantum Field Theory (QFT). We emphasize that, in curved space-time, nothing a priori prevents this term from potentially having a mild running behavior associated to quantum effects. Remarkably, this could be the very origin of the dynamical nature of the Dark Energy, in contrast to many other popular options considered in the literature. In discussing this possibility, we also address some recent criticisms concerning the possibility of such running. Our conclusion is that, while there is no comprehensive proof of the CC running, there is no proof of the non-running either. The problem can be solved only through a deeper understanding of the vacuum contributions of massive quantum fields on a curved spacetime background. We suggest that such investigations are at the heart of one of the most important endeavors of fundamental theoretical cosmology in the years to come.

Ilya L. Shapiro; Joan Sola

2009-10-26T23:59:59.000Z

435

Running Head: TESTOSTERONE AND POWER Testosterone and power  

E-Print Network [OSTI]

Running Head: TESTOSTERONE AND POWER Testosterone and power Steven J. Stanton and Oliver C. Schultheiss University of Michigan, Ann Arbor, MI, USA To appear in: K. Dowding (Ed.), Encyclopedia of power-647-9440, email: stantons@umich.edu #12;Testosterone and power 2 Across many studies in humans, two functional

Schultheiss, Oliver C.

436

IMAGINED TRANSFORMATIONS 1 Running head: IMAGINED TRANSFORMATION OF BODIES  

E-Print Network [OSTI]

IMAGINED TRANSFORMATIONS 1 Running head: IMAGINED TRANSFORMATION OF BODIES Imagined Transformations TRANSFORMATIONS 2 Abstract A number of spatial reasoning problems can be solved by performing an imagined transformation of one's egocentric perspective. A series of experiments were carried out to characterize

Zacks, Jeffrey M.

437

Gross Energy Cost of Horizontal Treadmill and Track Running  

Science Journals Connector (OSTI)

The gross energy cost of treadmill and track running is re-...2...(ml/kg/min) = 2.209 + 3.163 speed (km/h) for 130 subjects (trained and untrained males and females) and 10 treadmill studies. On the track, wind r...

Dr L. Lger; D. Mercier

1984-07-01T23:59:59.000Z

438

Segment Protection for Embedded Systems Using Run-time Checks  

E-Print Network [OSTI]

Segment Protection for Embedded Systems Using Run-time Checks Matthew Simpson Bhuvan Middha Rajeev of un- reliability in many embedded systems. Without the segment-level protection it provides be dangerous and catastrophic in safety-critical systems. The tradi- tional method of testing embedded software

Barua, Rajeev

439

IE 361 Module 15 The Average Run Length Concept  

E-Print Network [OSTI]

IE 361 Module 15 The Average Run Length Concept Reading: Section 3.5 of Statistical Quality Assurance Methods for Engineers Prof. Steve Vardeman and Prof. Max Morris Iowa State University Vardeman Electric set of alarm rules to a control charting scheme? The most e¤ective means known for making

Vardeman, Stephen B.

440

Water Resources Water Quality and Water Treatment  

E-Print Network [OSTI]

Water Resources TD 603 Lecture 1: Water Quality and Water Treatment CTARA Indian Institute of Technology, Bombay 2nd November, 2011 #12;OVERVIEW Water Quality WATER TREATMENT PLANTS WATER TREATMENT PLANTS WATER TREATMENT PLANTS WATER TRE OVERVIEW OF THE LECTURE 1. Water Distribution Schemes Hand Pump

Sohoni, Milind

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Biological monitoring of Upper Three Runs Creek, Savannah River Site, Aiken County, South Carolina, March 1990--July 1991  

SciTech Connect (OSTI)

In anticipation of the fall 1988 start up of effluent discharges into Upper Three Runs Creek by the F/H Area Effluent Treatment Facility of the Savannah River Site, Aiken, SC, a two and one half year biological study was initiated in June 1987. Upper Three Runs Creek is an intensively studied fourth order stream known for its high species richness. Designed to assess the potential impact of F/H area effluent on the creek, the study included qualitative and quantitative macroinvertebrate stream surveys at five sites (see map), chronic toxicity testing of the effluent, water chemistry and bioaccumulation analysis. In a March 1990 study of the potential impact of F/H Area effluent on the macroinvertebrate communities of Upper Three Runs Creek was extended, with reductions in the number of sites to be sampled and in the frequency of water chemistry sampling. This report presents the results of macroinvertebrate stream surveys at three sites, chronic toxicity testing of the effluent and water chemistry analysis of the three stream sites and the effluent from March 1990 to July 1991.

Not Available

1991-12-01T23:59:59.000Z

442

Designing a 'Near Optimum' Cooling-Water System  

E-Print Network [OSTI]

Cooling water is expensive to circulate. Reducing its flow - i.e., hiking exchanger outlet temperatures - can cut tower, pump and piping investment as much as one-third and operating cost almost in half. Heat-exchanger-network optimization has been...

Crozier, R. A., Jr.

1981-01-01T23:59:59.000Z

443

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS  

SciTech Connect (OSTI)

Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. The bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple cast-iron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs while the pipe remains in service by traveling through the pipe, cleaning each joint surface, and installing a stainless-steel sleeve lined with an epoxy-impregnated felt across the joint. This approach will save considerable time and labor, avoid traffic disruption, and eliminate any requirement to interrupt service to customers (which would result in enormous expense to utilities). Technical challenges include: (1) repair sleeves must compensate for diametric variation and eccentricity of cast-iron pipes; (2) the assembly must travel long distances through pipes containing debris; (3) the pipe wall must be effectively cleaned in the immediate area of the joint to assure good bonding of the sleeve; and (4) an innovative bolt-on entry fitting is required to conduct repair operations on live mains. The development effort is divided into eleven tasks. Task 1--Program Management and Task 2--were completed in prior quarters while Task 3--Design and Fabricate Ratcheting Stainless-Steel Repair Sleeves has progressed to installing prototype sleeves in cast iron test pipe segments. Efforts in this quarter continued to focus on Tasks 4--8, with significant progress made in each. Task 4 (Design, Fabricate and Test Patch Setting Robotic Train) progressed to the design of the control electronics and pneumatic system to inflate the bladder robotic patch setting module. Task 5 (Design & Fabricate Pipe-Wall Cleaning Robot Train with Pan/Zoom/Tilt Camera) continued with additional in-pipe testing required to optimize the design of the robot elements and surface control electronics and software. Task 6 (Design & Build Surface Control and Monitoring System) has been completed with the control and computer display functions being operated through LabView. Task 7 (Design & Fabricate Large Diameter Live Access System) progressed to completing the detailed design of the entry fitting for 12-inch diameter cast iron pipe. The fitting is now being placed into manufacture. Task 8--System Integration and Laboratory Validation continued developing the robot module inter-connects and development of a master LabView-based system display and control software.

Kiran M. Kothari; Gerard T. Pittard

2004-04-01T23:59:59.000Z

444

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS  

SciTech Connect (OSTI)

Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. The bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple castiron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs while the pipe remains in service by traveling through the pipe, cleaning each joint surface, and installing a stainless-steel sleeve lined with an epoxy-impregnated felt across the joint. This approach will save considerable time and labor, avoid traffic disruption, and eliminate any requirement to interrupt service to customers (which would result in enormous expense to utilities). Technical challenges include: (1) repair sleeves must compensate for diametric variation and eccentricity of cast-iron pipes; (2) the assembly must travel long distances through pipes containing debris; (3) the pipe wall must be effectively cleaned in the immediate area of the joint to assure good bonding of the sleeve; and (4) an innovative bolt-on entry fitting is required to conduct repair operations on live mains. The development effort is divided into eleven tasks. Task 1 (Program Management) and Task 2 (Establishment of Detailed Design Specifications) were completed in prior quarters while Task 3 (Design and Fabricate Ratcheting Stainless-Steel Repair Sleeves) has progressed to installing prototype sleeves in cast iron test pipe segments. Efforts in this quarter continued to focus on Tasks 4-8, with significant progress made in each. Task 4 (Design, Fabricate and Test Patch Setting Robotic Train) progressed to the design of the control electronics and pneumatic system to inflate the bladder robotic patch setting module. Task 5 (Design & Fabricate Pipe-Wall Cleaning Robot Train with Pan/Zoom/Tilt Camera) continued with additional in-pipe testing required to optimize the design of the robot elements and surface control electronics and software. Task 6 (Design & Build Surface Control and Monitoring System) has been completed with the control and computer display functions being operated through LabView. Task 7 (Design & Fabricate Large Diameter Live Access System) progressed to completing the detailed design of the entry fitting for 12-inch diameter cast iron pipe. The fitting is now being manufactured. The 12-inch ball valve for allowing no-blow access was also procured. Task 8 (System Integration and Laboratory Validation) continued with the development of the robot module inter-connects and of a master LabView-based system display and control software.

Kiran M Kothari; Gerard T. Pittard

2004-07-01T23:59:59.000Z

445

SEALING LARGE-DIAMETER CAST-IRON PIPE JOINTS UNDER LIVE CONDITIONS  

SciTech Connect (OSTI)

Utilities in the U.S. operate over 75,000 km (47,000 miles) of old cast-iron pipes for gas distribution. The bell-and-spigot joints that connect pipe sections together tend to leak as these pipes age. Current repair practices are costly and highly disruptive. The objective of this program is to design, test and commercialize a robotic system capable of sealing multiple cast iron bell and spigot joints from a single pipe entry point. The proposed system will perform repairs while the pipe remains in service by traveling through the pipe, cleaning each joint surface, and installing a stainless-steel sleeve lined with an epoxy-impregnated felt across the joint. This approach will save considerable time and labor, avoid traffic disruption, and eliminate any requirement to interrupt service to customers (which would result in enormous expense to utilities). Technical challenges include: (1) repair sleeves must compensate for diametric variation and eccentricity of cast-iron pipes; (2) the assembly must travel long distances through pipes containing debris; (3) the pipe wall must be effectively cleaned in the immediate area of the joint to assure good bonding of the sleeve; and (4) an innovative bolt-on entry fitting is required to conduct repair operations on live mains. The development effort is divided into eleven tasks. Task 1--Program Management and Task 2--were completed in prior quarters while Task 3--Design and Fabricate Ratcheting Stainless-Steel Repair Sleeves has progressed to installing prototype sleeves in cast iron test pipe segments. Efforts in this quarter continued to focus on Tasks 4--8, with significant progress made in each. Task 4 (Design, Fabricate and Test Patch Setting Robotic Train) progressed to the design of the control electronics and pneumatic system to inflate the bladder robotic patch setting module. Task 5 (Design & Fabricate Pipe-Wall Cleaning Robot Train with Pan/Zoom/Tilt Camera) continued with additional in-pipe testing required to optimize the design of the robot elements and surface control electronics and software. Task 6 (Design & Build Surface Control and Monitoring System) has been completed with the control and computer display functions being operated through LabView. Task 7 (Design & Fabricate Large Diameter Live Access System) progressed to the design, fabrication and testing of a entry fitting in a 4-inch prototype and is now being used to complete drawings for use in 12-inch diameter pipe. Task 8--System Integration and Laboratory Validation continued developing the robot module inter-connects and development of a master LabView-based system display and control software.

Kiran M. Kothari, Gerard T. Pittard

2004-01-01T23:59:59.000Z

446

Composite drill pipe and method for forming same  

DOE Patents [OSTI]

Metal inner and outer fittings configured, the inner fitting configured proximally with an external flange and projecting distally to form a cylindrical barrel and stepped down-in-diameter to form an abutment shoulder and then projecting further distally to form a radially inwardly angled and distally extending tapered inner sleeve. An outer sleeve defining a torque tube is configured with a cylindrical collar to fit over the barrel and is formed to be stepped up in diameter in alignment with the first abutment shoulder to then project distally forming a radially outwardly tapered and distally extending bonding surface to cooperate with the inner sleeve to cooperate with the inner sleeve in forming a annular diverging bonding cavity to receive the extremity of a composite pipe to abut against the abutment shoulders and to be bonded to the respective bonding surfaces by a bond.

Leslie, James C; Leslie, II, James C; Heard, James; Truong, Liem; Josephson, Marvin

2014-04-15T23:59:59.000Z

447

Survey of strong motion earthquake effects on thermal power plants in California with emphasis on piping systems. Volume 2, Appendices  

SciTech Connect (OSTI)

Volume 2 of the ``Survey of Strong Motion Earthquake Effects on Thermal Power Plants in California with Emphasis on Piping Systems`` contains Appendices which detail the detail design and seismic response of several power plants subjected to strong motion earthquakes. The particular plants considered include the Ormond Beach, Long Beach and Seal Beach, Burbank, El Centro, Glendale, Humboldt Bay, Kem Valley, Pasadena and Valley power plants. Included is a typical power plant piping specification and photographs of typical power plant piping specification and photographs of typical piping and support installations for the plants surveyed. Detailed piping support spacing data are also included.

Stevenson, J.D. [Stevenson and Associates, Cleveland, OH (United States)

1995-11-01T23:59:59.000Z

448

Design and analysis of megawatt-class heat-pipe reactor concepts  

SciTech Connect (OSTI)

There is growing interest in finding an alternative to diesel-powered systems at locations removed from a reliable electrical grid. One promising option is a 1- to 10-MW mobile reactor system, that could provide robust, self-contained, and long-term ({>=} 5 years) power in any environment. The reactor and required infrastructure could be transported to any location within one or a few standard transport containers. Heat pipe reactors, using alkali metal heat pipes, are perfectly suited for mobile applications because their nature is inherently simpler, smaller, and more reliable than 'traditional' reactors that rely on pumped coolant through the core. This paper examines a heat pipe reactor that is fabricated and shipped as six identical core segments. Each core segment includes a heat-pipe-to-gas heat exchanger that is coupled to the condenser end of the heat pipes. The reference power conversion system is a CO{sub 2}-Brayton system. The segments by themselves are deeply subcritical during transport, and they would be locked into an operating configuration (with control inserted) at the final destination. Two design options are considered: a near-term option and an advanced option. The near-term option is a 5-MWt concept that uses uranium-dioxide fuel, a stainless-steel structure, and potassium as the heat-pipe working fluid. The advanced option is a 15-MWt concept that uses uranium-nitride fuel, a molybdenum/TZM structure, and sodium as the heat-pipe working fluid. The materials used in the advanced option allow for higher temperatures and power densities, and enhanced power throughput in the heat pipes. Higher powers can be obtained from both concepts by increasing the core size and the number of heat pipes. (authors)

Poston, D.; Kapernick, R. [Los Alamos National Laboratory, MS C921, Los Alamos, NM 87545 (United States)

2012-07-01T23:59:59.000Z

449

Pump and control unit for a solar heating installation for a water tank and particularly for a swimming pool  

SciTech Connect (OSTI)

The invention relates to a pump and control unit for a solar heating installation system for a water tank, particularly for a swimming pool. The system contains a solar collector, a hydraulic circuit which includes an outward-flow pipe, a return-flow pipe, a pump, a derivative-action control unit and two sensors mounted on the outward-flow pipe and on the return-flow pipe, respectively. The pump, the control unit and the two sensors are integrated into a single case. The case is provided in its top wall with a transparent opening which faces the return-flow sensor and through which said sensor can be exposed to solar radiation, such that the pump may be automatically activated during periods of sunshine, i.e., when the solar collector is heating the water returning to the tank, and stopped due to lack of sunshine.

Cannaux, G.; Calvet, G.

1985-09-17T23:59:59.000Z

450

Path integration in desert ants, Cataglyphis: how to make a homing ant run away from home  

Science Journals Connector (OSTI)

...how to make a homing ant run away from home David Andel * Rudiger Wehner * Author for...that during the repeated landmark-guided home runs the an's path integrator runs continually...result is that the homing ants run away from home. This finding implies that the ants do...

2004-01-01T23:59:59.000Z

451

Energy and Air Emission Effects of Water Supply  

Science Journals Connector (OSTI)

Breakdown of energy comsumption of a water utility: (a) life-cycle phase, (b) water supply phase, (c) life-cycle activity, and (d) material production category. ... The Water?Energy Sustainability Tool (WEST) can evaluate the construction, operation, and maintenance of water systems and compare the direct and indirect (supply chain) energy and environmental effects of alternative water sources in terms of material production (e.g., concrete, pipe, and chemicals), material delivery, construction and maintenance equipment use, energy production (electricity and fuel), and sludge disposal. ... The difference is due to fossil fuels, especially coal, which make up a larger portion of the U.S. electricity mix. ...

Jennifer R. Stokes; Arpad Horvath

2009-03-20T23:59:59.000Z

452

Seismic fragility evaluation of a piping system in a nuclear power plant by shaking table test and numerical analysis  

SciTech Connect (OSTI)

In this study, a seismic fragility evaluation of the piping system in a nuclear power plant was performed. For the evaluation of seismic fragility of the piping system, this research was progressed as three steps. At first, several piping element capacity tests were performed. The monotonic and cyclic loading tests were conducted under the same internal pressure level of actual nuclear power plants to evaluate the performance. The cracks and wall thinning were considered as degradation factors of the piping system. Second, a shaking tale test was performed for an evaluation of seismic capacity of a selected piping system. The multi-support seismic excitation was performed for the considering a difference of an elevation of support. Finally, a numerical analysis was performed for the assessment of seismic fragility of piping system. As a result, a seismic fragility for piping system of NPP in Korea by using a shaking table test and numerical analysis. (authors)

Kim, M. K.; Kim, J. H.; Choi, I. K. [Korea Atomic Energy Research Inst., Daedeok-daero 989-111, Yuseong-gu, Daejeon, 305-353 (Korea, Republic of)

2012-07-01T23:59:59.000Z

453

Improvements in Low-Frequency, Ultrasonic Phased-Array Evaluation for Thick Section Cast Austenitic Stainless Steel Piping Components  

SciTech Connect (OSTI)

Research is being conducted for the U.S. Nuclear Regulatory Commission (NRC) at the Pacific Northwest National Laboratory (PNNL) to assess the effectiveness and reliability of advanced nondestructive examination (NDE) methods for the inspection of light water reactor (LWR) components. A primary objective of this work is to evaluate various NDE methods to assess their ability to detect, localize, and size cracks in coarse-grained steel components. This particular study focused on the evaluation of custom-designed, low-frequency (500 kHz) phased-array (PA) probes for examining welds in thick-section cast austenitic stainless steel (CASS) piping. In addition, research was conducted to observe ultrasonic sound field propagation effects from known coarse-grained microstructures found in parent CASS material. The study was conducted on a variety of thick-wall, coarse-grained CASS specimens that were previously inspected by an older generation 500-kHz PA-UT probe and acquisition instrument configuration. This comparative study describes the impact of the new PA probe design on flaw detection and sizing in a low signal-to-noise environment. The set of Pressurized Water Reactor Owners Group (PWROG) CASS specimens examined in this study are greater than 50.8-mm (2.0-in.) thick with documented flaws and microstructures. These specimens are on loan to PNNL from the Electric Power Research Institute (EPRI) NDE Center in Charlotte, North Carolina. The flaws contained within these specimens are thermal fatigue cracks (TFC) or mechanical fatigue cracks (MFC) and range from 13% to 42% in through-wall extent. In addition, ultrasonic signal continuity was evaluated on two CASS parent material ring sections by examining the edge-of-pipe response (corner geometry) for regions of signal loss.

Anderson, Michael T.; Crawford, Susan L.; Diaz, Aaron A.; Moran, Traci L.

2010-12-01T23:59:59.000Z

454

Running Springs, California: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Running Springs, California: Energy Resources Running Springs, California: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 34.2077859°, -117.1092049° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":34.2077859,"lon":-117.1092049,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

455

SSRL Experimental Run Schedule | Stanford Synchrotron Radiation Lightsource  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Experimental Run Schedule Experimental Run Schedule SLAC National Accelerator Laboratory will be closed for the winter holidays, December 21, 2013 through January 5, 2014. SSRL generally operates November through August, using the shutdown period for upgrades and maintenance projects. SSRL operates at 500mA and employs a frequent fill schedule to maintain the SPEAR3 current approximately constant. Automatic injections will be conducted every 5 minutes. Automatic injections will only occur at the designated 5 minute intervals (i.e., on the hour and every 5 minutes thereafter). If the injector is not functional at the designated fill time, then the fill will be skipped. The current will be replenished at the next scheduled fill time after the injector is repaired and normal injection intervals will resume. The operator will give

456

Dry Run, Ohio: Energy Resources | Open Energy Information  

Open Energy Info (EERE)

Run, Ohio: Energy Resources Run, Ohio: Energy Resources Jump to: navigation, search Equivalent URI DBpedia Coordinates 39.1042277°, -84.330494° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":39.1042277,"lon":-84.330494,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

457

Top mass measurements at the Tevatron run II  

SciTech Connect (OSTI)

The latest top quark mass measurements by the CDF and D0 experiments are presented here. The mass has been determined in the dilepton (t{bar t} {yields} e{mu}, ee, {mu}{mu} + jets + E{sub T}) and lepton plus jets (t{bar t} {yields} e or {mu} + jets + E{sub T}) final states. The most accurate single result from lepton plus jets channel is 173.5{sub -3.6}{sup +3.7}(stat. + Jet Energy Scale Systematic) {+-} 1.3(syst.) GeV/c{sup 2}, which is better than the combined CDF and D0 Run I average. A preliminary and unofficial average of the best experimental Run II results gives M{sub top} = 172.7 {+-} 3.5 GeV/c{sup 2}.

Velev, Gueorgui V.; /Fermilab

2005-10-01T23:59:59.000Z

458

Definition: District chilled water | Open Energy Information  

Open Energy Info (EERE)

chilled water chilled water Jump to: navigation, search Dictionary.png District chilled water Water chilled outside of a building in a central plant and piped into the building as an energy source for cooling. Chilled water may be purchased from a utility or provided by a central physical plant in a separate building that is part of the same multibuilding facility (e.g. a hospital complex or university).[1][2] View on Wikipedia Wikipedia Definition Related Terms District heat References ↑ http://205.254.135.24/tools/glossary/index.cfm?id=D ↑ http://buildingsdatabook.eren.doe.gov/Glossary.aspx#Tech Ret LikeLike UnlikeLike You like this.Sign Up to see what your friends like. rieved from "http://en.openei.org/w/index.php?title=Definition:District_chilled_water&oldid=423381"

459

Joint physical and numerical modeling of water distribution networks.  

SciTech Connect (OSTI)

This report summarizes the experimental and modeling effort undertaken to understand solute mixing in a water distribution network conducted during the last year of a 3-year project. The experimental effort involves measurement of extent of mixing within different configurations of pipe networks, measurement of dynamic mixing in a single mixing tank, and measurement of dynamic solute mixing in a combined network-tank configuration. High resolution analysis of turbulence mixing is carried out via high speed photography as well as 3D finite-volume based Large Eddy Simulation turbulence models. Macroscopic mixing rules based on flow momentum balance are also explored, and in some cases, implemented in EPANET. A new version EPANET code was developed to yield better mixing predictions. The impact of a storage tank on pipe mixing in a combined pipe-tank network during diurnal fill-and-drain cycles is assessed. Preliminary comparison between dynamic pilot data and EPANET-BAM is also reported.

Zimmerman, Adam; O'Hern, Timothy John; Orear, Leslie Jr.; Kajder, Karen C.; Webb, Stephen Walter; Cappelle, Malynda A.; Khalsa, Siri Sahib; Wright, Jerome L.; Sun, Amy Cha-Tien; Chwirka, J. Benjamin; Hartenberger, Joel David; McKenna, Sean Andrew; van Bloemen Waanders, Bart Gustaaf; McGrath, Lucas K.; Ho, Clifford Kuofei

2009-01-01T23:59:59.000Z

460

Water Heaters and Hot Water Distribution Systems  

E-Print Network [OSTI]

from controlling heat loss through the distribution pipes.distribution system configurations; a collection of analytical heat lossdistribution system configurations; a collection of analytical heat loss

Lutz, Jim

2012-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Technical Results from the Surface Run of the LUX Dark Matter Experiment  

E-Print Network [OSTI]

We present the results of the three-month above-ground commissioning run of the Large Underground Xenon (LUX) experiment at the Sanford Underground Research Facility located in Lead, South Dakota, USA. LUX is a 370 kg liquid xenon detector that will search for cold dark matter in the form of Weakly Interacting Massive Particles (WIMPs). The commissioning run, conducted with the detector immersed in a water tank, validated the integration of the various sub-systems in preparation of the underground deployment. Using the data collected, we report excellent light collection properties, achieving 8 photoelectrons per keV for 662 keV electron recoils without an applied electric field, measured in the center of the WIMP target. We also find good energy and position resolution in relatively high-energy interactions from a variety of internal and external sources. Finally, we have used the commissioning data to tune the optical properties of our simulation and report updated sensitivity projections for spin-independe...

Akerib, D S; Bernard, E; Bernstein, A; Bradley, A; Byram, D; Cahn, S B; Carmona-Benitez, M C; Chapman, J J; Coffey, T; Dobi, A; Dragowsky, E; Druszkiewicz, E; Edwards, B; Faham, C H; Fiorucci, S; Gaitskell, R J; Gibson, K R; Gilchriese, M; Hall, C; Hanhardt, M; Ihm, M; Jacobsen, R G; Kastens, L; Kazkaz, K; Knoche, R; Larsen, N; Lee, C; Lesko, K T; Lindote, A; Lopes, M I; Lyashenko, A; Malling, D C; Mannino, R; McKinsey, D N; Mei, D; Mock, J; Moongweluwan, M; Morii, M; Nelson, H; Neves, F; Nikkel, J A; Pangilinan, M; Pech, K; Phelps, P; Rodionov, A; Shutt, T; Silva, C; Skulski, W; Solovov, V N; Sorensen, P; Stiegler, T; Sweany, M; Szydagis, M; Taylor, D; Tripathi, M; Uvarov, S; Verbus, J R; de Viveiros, L; Walsh, N; Webb, R; White, J T; Wlasenko, M; Wolfs, F L H; Woods, M; Zhang, C

2012-01-01T23:59:59.000Z

462

Technical Results from the Surface Run of the LUX Dark Matter Experiment  

E-Print Network [OSTI]

We present the results of the three-month above-ground commissioning run of the Large Underground Xenon (LUX) experiment at the Sanford Underground Research Facility located in Lead, South Dakota, USA. LUX is a 370 kg liquid xenon detector that will search for cold dark matter in the form of Weakly Interacting Massive Particles (WIMPs). The commissioning run, conducted with the detector immersed in a water tank, validated the integration of the various sub-systems in preparation of the underground deployment. Using the data collected, we report excellent light collection properties, achieving 8.4 photoelectrons per keV for 662 keV electron recoils without an applied electric field, measured in the center of the WIMP target. We also find good energy and position resolution in relatively high-energy interactions from a variety of internal and external sources. Finally, we have used the commissioning data to tune the optical properties of our simulation and report updated sensitivity projections for spin-independent WIMP-nucleon scattering.

LUX Collaboration; D. S. Akerib; X. Bai; E. Bernard; A. Bernstein; A. Bradley; D. Byram; S. B. Cahn; M. C. Carmona-Benitez; J. J. Chapman; T. Coffey; A. Dobi; E. Dragowsky; E. Druszkiewicz; B. Edwards; C. H. Faham; S. Fiorucci; R. J. Gaitskell; K. R. Gibson; M. Gilchriese; C. Hall; M. Hanhardt; M. Ihm; R. G. Jacobsen; L. Kastens; K. Kazkaz; R. Knoche; N. Larsen; C. Lee; K. T. Lesko; A. Lindote; M. I. Lopes; A. Lyashenko; D. C. Malling; R. Mannino; D. N. McKinsey; D. Mei; J. Mock; M. Moongweluwan; M. Morii; H. Nelson; F. Neves; J. A. Nikkel; M. Pangilinan; K. Pech; P. Phelps; A. Rodionov; T. Shutt; C. Silva; W. Skulski; V. N. Solovov; P. Sorensen; T. Stiegler; M. Sweany; M. Szydagis; D. Taylor; M. Tripathi; S. Uvarov; J. R. Verbus; L. de Viveiros; N. Walsh; R. Webb; J. T. White; M. Wlasenko; F. L. H. Wolfs; M. Woods; C. Zhang

2012-10-16T23:59:59.000Z

463

Online precision gas evaluation of the ATLAS Muon Spectrometer during LHC RUN1  

E-Print Network [OSTI]

The ATLAS Muon Spectrometer, a six story structure embedded in a toroidal magnetic field, is constructed of nearly 1200 Monitored Drift Tube chambers (MDTs) containing 354,000 aluminum drift tubes. The operating gas is 93% Ar + 7% CO2 with a small amount of water vapor at a pressure of 3 bar. The momentum resolution required for the LHC physics (dp/p = 2% at 100 GeV) demands that MDT gas gas quality and the associated gas dependent calibrations be determined with a rapid feedback cycle. During the LHC Run 1 more than 2 billion liters of gas flowed through the detector at a rate 100,000 l/hr. Online evauation of MDT gas in real time and the associated contribution to the determination of the time-to-space functions was conducted by the dedicated Gas Monitor Chamber. We report on the operation and results of the GMC over the first three years of LHC running. During this period, the GMC has operated with a nearly 100% duty cycle, providing hourly measurements of the MDT drift times with 1 ns precision, correspon...

The ATLAS collaboration

2014-01-01T23:59:59.000Z

464

Online precision gas evaluation of the ATLAS Muon Spectrometer during LHC Run1  

E-Print Network [OSTI]

The ATLAS Muon Spectrometer, a six story structure embedded in a toroidal magnetic field, is constructed of nearly 1200 Monitored Drift Tube chambers (MDTs) containing 354,000 aluminum drift tubes. The operating gas is 93% Ar + 7% CO${_2}$ with a small amount of water vapor at a pressure of 3 bar. The momentum resolution required for ATLAS physics demands that MDT gas quality and the associated gas dependent calibrations be determined with a rapid feedback cycle. During the LHC Run1, more than 2 billion liters of gas flowed through the detector at a rate 100,000 l/hr. Online evaluation of MDT gas in real time and the associated contribution to the determination of the time-to-space functions was conducted by the dedicated Gas Monitor Chamber (GMC). We report on the operation and results of the GMC over the first three years of LHC running. During this period, the GMC has operated with a nearly 100% duty cycle, providing hourly measurements of the MDT drift times with 1 ns precision, corresponding to minute ch...

Geng, Cong; The ATLAS collaboration

2014-01-01T23:59:59.000Z

465

NREL: News Feature - Recycled Natural Gas Pipes Shore Up Green Building  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Recycled Natural Gas Pipes Shore Up Green Building Recycled Natural Gas Pipes Shore Up Green Building July 17, 2009 Photo of a line of four large metal tubes coming out of the ground in a construction site with blue sky, hills and buildings in the background. Early photos show the first few reclaimed gas pipes being erected at the RSF construction site. Using these recycled pipes will be help the building attain LEED platinum status. Credit: Carl Cox Building a support structure of something, tried, true and tested like "off the shelf" steel is standard practice in building construction. NREL's effort to create the most energy efficient and "green" office building is putting a twist on an old standard. The columns that will carry the weight of floors and walls in the new Research Support Facilities (RSF) are

466

Supercritical CO2-Corrosion in Heat Treated Steel Pipes during Carbon Capture and Storage CCS  

Science Journals Connector (OSTI)

Heat treatment of steels used for engineering a saline aquifer Carbon Capture and Storage (CCS) site may become...2...) into deep geological rock formations. 13% Chromium steel injection pipes heat treated differ...

Anja Pfennig; Phillip Zastrow

2013-01-01T23:59:59.000Z

467

Analyzing the efficiency of a photovoltaic-thermal solar collector based on heat pipes  

Science Journals Connector (OSTI)

The structure of a photovoltaic/thermal solar collector based on aluminum heat pipes and ... , along with the results from analyzing its efficiency. Its optimum mode of operation is shown...

S. M. Khairnasov

2014-01-01T23:59:59.000Z

468

Design and fabrication of a maneuverable robot for in-pipe leak detection  

E-Print Network [OSTI]

Leaks in pipelines have been causing a significant amount of financial losses and serious damages to the community and the environment. The recent development of in-pipe leak detection technologies at Massachusetts Institute ...

Wu, You, S.M. Massachusetts Institute of Technology

2014-01-01T23:59:59.000Z

469

DOE - Office of Legacy Management -- U S Pipe and Foundry Co...  

Office of Legacy Management (LM)

Levine to File; Subject: Elimination Recommendation; U.S. Pipe and Foundry Co.; December 30, 1986 NJ.23-3 - Subcontract; Contract No. 7401-37-8 Research and Development;...

470

Biomass heat pipe reformerdesign and performance of an indirectly heated steam gasifier  

Science Journals Connector (OSTI)

Indirectly heated dual fluidized bed (DFB) gasifiers are a promising option for the production ... syngas, in particular in the small- and medium-scale range. The application of so-called ... pipes solves the key...

Jrgen Karl

2014-03-01T23:59:59.000Z

471

Heat transfer during laminar fluid flow in a pipe with radiative heat removal  

Science Journals Connector (OSTI)

The heat-transfer problem is analyzed for laminar fluid flow in the initial section of a ... pipe having a parabolic entry velocity distribution and heat removal by radiation from the surface of...

Ya. S. Kadaner; Yu. P. Rassadkin; . L. Spektor

1971-01-01T23:59:59.000Z

472

Heat transfer effectiveness of three-fluid separated heat pipe exchanger  

Science Journals Connector (OSTI)

A heat transfer model for three-fluid separated heat pipe exchanger was analyzed, and the temperature transfer matrix for general three-fluid separated heat exchanger working in parallel-flow or counter- ... It w...

Chengming Shi; Yang Wang; Ying Yang; Quan Liao

2011-02-01T23:59:59.000Z

473

Fluid transients and fluid-structure interaction in flexible liquid-filled piping  

E-Print Network [OSTI]

conditions, ie, waterhammer. Between 1970 and 1980, a sub- stantial amount of research activity focused the nuclear power industry, where a num- ber of waterhammer incidents and resulting pipe motion occurred. Over

Tijsseling, A.S.

474

Resistance factors calibration and its application using static load test data for driven steel pipe piles  

Science Journals Connector (OSTI)

This paper presents the reliability-based resistance factor calibration of driven steel pipe piles and the implementation of Load and Resistance Factor Design (LRFD) on ... framework based on reliability theory u...

Jae Hyun Park; Jungwon Huh; Kyung Jun Kim

2013-07-01T23:59:59.000Z

475

OPS 9.18 Equipment and Piping Labeling 8/24/98  

Broader source: Energy.gov [DOE]

The objective of this surveillance is to verify that facility equipment and piping are labeled in a manner such that facility personnel are able to positively identify equipment they operate. This...

476

Radiant heating tests of several liquid metal heat-pipe sandwich panels  

SciTech Connect (OSTI)

Integral heat pipe sandwich panels, which synergistically combine the thermal efficiency of heat pipes and the structural efficiency of honeycomb sandwich construction, were conceived as a means of alleviating thermal stress problems in the Langley Scramjet Engine. Test panels which utilized two different wickable honeycomb cores, facesheets with screen mesh sintered to the internal surfaces, and a liquid metal working fluid (either sodium or potassium) were tested by radiant heating at various heat load levels. The heat pipe panels reduced maximum temperature differences by 31 percent with sodium working fluid and 45 percent with potassium working fluid. Results indicate that a heat pipe sandwich panel is a potential, simple solution to the engine thermal stress problem. Other interesting applications of the concept include: cold plates for electronic component and circuit card cooling, radiators for large space platforms, low distortion large area structures (e.g., space antennas) and laser mirrors.

Camarda, C.J.; Basiulis, A.

1983-08-01T23:59:59.000Z

477

BOA: Asbestos pipe-insulation removal robot system, Phase 2. Topical report, January--June 1995  

SciTech Connect (OSTI)

This report explored the regulatory impact and cost-benefit of a robotic thermal asbestos pipe-insulation removal system over the current manual abatement work practice. The authors are currently in the second phase of a two-phase program to develop a robotic asbestos abatement system, comprised of a ground-based support system (including vacuum, fluid delivery, computing/electronics/power, and other subsystems) and several on-pipe removal units, each sized to handle pipes within a given diameter range. The intent of this study was to (i) aid in developing design and operational criteria for the overall system to maximize cost-efficiency, and (ii) to determine the commercial potential of a robotic pipe-insulation abatement system.

Schempf, H.; Bares, J.E.

1995-06-01T23:59:59.000Z

478

Investigation on Wave Propagation Characteristics in Plates and Pipes for Identification of Structural Defect Locations  

E-Print Network [OSTI]

For successful identification of structural defects in plates and pipes, it is essential to understand structural wave propagation characteristics such as dispersion relations. Analytical approaches to identify the dispersion relations...

Han, Je Heon

2013-07-31T23:59:59.000Z

479

Minority-Carrier Thermoelectric Devices Kevin P. Pipe and Rajeev J. Ram  

E-Print Network [OSTI]

results are given for several common material systems. Introduction Thermoelectric effects haveMinority-Carrier Thermoelectric Devices Kevin P. Pipe and Rajeev J. Ram Research Laboratory the thermoelectric performance of the electronic devices themselves. Recognizing that minority carriers play

480

A steady state analysis code for prediction of behavior in loop heat pipes  

E-Print Network [OSTI]

The purpose of this work is to prepare an analysis raphics. code for the prediction of Loop Heat Pipe (LHP) behavior in steady-state operation. The FORTRAN program is then benchmarked with experimental data obtained in two orientations: 1...

Hamm, Trenton Allen

1998-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "water pipes running" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Experimental study of a photovoltaic solar-assisted heat-pump/heat-pipe system  

Science Journals Connector (OSTI)

A practical design for a heat pump with heat-pipe photovoltaic/thermal (PV/T) collectors is presented. The hybrid system is called the photovoltaic solar-assisted heat-pump/heat-pipe (PV-SAHP/HP) system. To focus on both actual demand and energy savings, the PV-SAHP/HP system was designed to be capable of operating in three different modes, namely, the heat-pipe, solar-assisted heat pump, and air-source heat-pump modes. Based on solar radiation, the system operates in an optimal mode. A series of experiments were conducted in Hong Kong to study the performance of the system when operating in the heat-pipe and the solar-assisted heat-pump modes. Moreover, energy and exergy analyses were used to investigate the total PV/T performance of the system.

H.D. Fu; G. Pei; J. Ji; H. Long; T. Zhang; T.T. Chow

2012-01-01T23:59:59.000Z

482

Testing of a loop heat pipe experimental apparatus under varied acceleration  

E-Print Network [OSTI]

An experimental apparatus was designed and fabricated to test a Loop Heat Pipe under varied acceleration. The experiment consisted of both flight and ground testing as well as comparisons to a model developed from models found in literature...

Kurwitz, Richard Cable

1997-01-01T23:59:59.000Z

483

Heat-pipe technology: a bibliography with abstracts. Quarterly update, July-September, 1981  

SciTech Connect (OSTI)

This bibliography presents 41 pages of citations and abstracts of publications on heat pipe uses, operation, materials design, fabrication and testing. Author and permuted title indexes are provided. (LCL)

Not Available

1981-10-01T23:59:59.000Z

484

RF transmission line and drill/pipe string switching technology for down-hole telemetry  

DOE Patents [OSTI]

A modulated reflectance well telemetry apparatus having an electrically conductive pipe extending from above a surface to a point below the surface inside a casing. An electrical conductor is located at a position a distance from the electrically conductive pipe and extending from above the surface to a point below the surface. Modulated reflectance apparatus is located below the surface for modulating well data into a RF carrier transmitted from the surface and reflecting the modulated carrier back to the surface. A RF transceiver is located at the surface and is connected between the electrically conductive pipe and the electrical conductor for transmitting a RF signal that is confined between the electrically conductive well pipe and the electrical conductor to the modulated reflectance apparatus, and for receiving reflected data on the well from the modulated reflectance apparatus.

Clark, David D. (Santa Fe, NM); Coates, Don M. (Santa Fe, NM)

2007-08-14T23:59:59.000Z

485

Towards a Visual Perception System for Pipe Inspection: Monocular Visual Odometry  

E-Print Network [OSTI]

was made possible by the support of an NPRP grant from the Qatar National Research Fund. The statements made herein are solely the responsibility of the authors. #12;Keywords: oil and gas, pipe inspection

486

Nek5000 Ready to Use after Simulations of Important Pipe Flow Benchmark |  

Broader source: Energy.gov (indexed) [DOE]

Nek5000 Ready to Use after Simulations of Important Pipe Flow Nek5000 Ready to Use after Simulations of Important Pipe Flow Benchmark Nek5000 Ready to Use after Simulations of Important Pipe Flow Benchmark January 29, 2013 - 1:42pm Addthis Velocity magnitude in MATiS-H spacer grid with swirl-type vanes. Velocity magnitude in MATiS-H spacer grid with swirl-type vanes. As part of the on-going Nek5000 validation efforts, a series of large eddy simulations (LES) have been performed for thermal stratification in a pipe. Results were in good agreement with the experiment and the simulation data has provided insight into the physics of the flow. An additional series of simulations of the OECD-NEA MATiS-H benchmark has also been completed using intermediate- fidelity modeling approaches, such as k-epsilon, k-omega shear stress transport, and ID detached eddy simulation, as well as one

487

Theoretical and experimental study of a heat pipe in zero-G for electrochemical cell cooling  

SciTech Connect (OSTI)

A new thermal concept to be used with Li/SOCL2 batteries is presented. A thermal model of a grooved nickel heat pipe under uniform heat input is developed, and an experimental assembly is made to simulate the operating conditions in zero-G. It is shown how this new thermal concept can provide the following for the electrochemical cell: thermal cooling by heat pipe, mechanical reinforcement, and current collection. The thermal behavior of a Li/SOCL2 cell under high rate discharge using this concept is compared with that of a traditional concept (aluminum corset around the cell which is fixed to a coldplate). A thermal model is established that uses ESACAP software including about 100 nodes to represent the cell and the aluminum pipe or the heat pipe. 10 refs.

Alain, A.; Ali, S.; Luc, F.J. (Ecole Nationale Superieure de Mecanique et d'Aerotechnique, Poitiers, (France) SAFT, Poitiers, (France))