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Note: This page contains sample records for the topic "flush water piping" 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

Preoperational test report, cross-site transfer water flush system (POTP-001)  

SciTech Connect (OSTI)

This report documents the results of the testing performed per POTP-001, for the Cross-Site Transfer Water Flush System. (HNF-1552, Rev. 0) The Flush System consists of a 47,000 gallon tank (302C), a 20 hp pump, two 498kW heaters, a caustic addition pump, various valves, instruments, and piping. The purpose of this system is to provide flush water at 140 F, 140gpm, and pH 11-12 for the Cross-Site Transfer System operation.

Parsons, G.L.

1998-02-20T23:59:59.000Z

2

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

3

Low temperature barrier wellbores formed using water flushing  

DOE Patents [OSTI]

A method of forming an opening for a low temperature well is described. The method includes drilling an opening in a formation. Water is introduced into the opening to displace drilling fluid or indigenous gas in the formation adjacent to a portion of the opening. Water is produced from the opening. A low temperature fluid is applied to the opening.

McKinzie, II; John, Billy [Houston, TX; Keltner, Thomas Joseph [Spring, TX

2009-03-10T23:59:59.000Z

4

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 Stony Brook University thSep.21th , 2010 #12;OutlineOutline · Straight Pipe flowStraight Pipe flow · Curved pipe flow #12;OutlineOutline · Straight Pipe flowStraight Pipe flow · Curved pipe flow #12

McDonald, Kirk

5

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

6

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

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

Water balance of Pin-Point and Flush-Flood irrigated rice  

E-Print Network [OSTI]

plant m '. The planting dates were May 26 and May 18 for the 1994 and 1995 growing seasons, respectively. At the first tiller stage, a mix of Quinclorac (Facet) and Bentazon (Basagran) herbicide was applied to the Flush-Flood (FF) plots only, at a... rate of 400g of active ingredient of Quinclorac and 800g of active 19 ingredient of Bentazon per hectare. The herbicide application was necessary to control mainly barnyardgrass (Kchinodoa spp. ) and sedges on the FF plots in both years. Pin- Point...

Roel Dellazoppa, Alvaro

1996-01-01T23:59:59.000Z

9

For Immediate Release --Wednesday, July 4, 2012 Water Pipe Replacement Closes Three Campus Buildings, July  

E-Print Network [OSTI]

1 For Immediate Release -- Wednesday, July 4, 2012 Water Pipe Replacement water supply pipe as well as building isolation valves. The main water to happen again. The pipe replacement is part of a $5.6 million upgrade

Morris, Joy

10

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

11

Steam bubble collapse, water hammer and piping network response  

E-Print Network [OSTI]

Work on steam bubble collapse, water hammer and piping network response was carried out in two closely related but distinct sections. Volume I of ,,is report details the experiments and analyses carried out in conjunction ...

Gruel, R.

12

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

13

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...

14

Slip ratio in dispersed viscous oil-water pipe flow  

SciTech Connect (OSTI)

In this article, dispersed flow of viscous oil and water is investigated. The experimental work was performed in a 26.2-mm-i.d. 12-m-long horizontal glass pipe using water and oil (viscosity of 100 mPa s and density of 860 kg/m{sup 3}) as test fluids. High-speed video recording and a new wire-mesh sensor based on capacitance (permittivity) measurements were used to characterize the flow. Furthermore, holdup data were obtained using quick-closing-valves technique (QCV). An interesting finding was the oil-water slip ratio greater than one for dispersed flow at high Reynolds number. Chordal phase fraction distribution diagrams and images of the holdup distribution over the pipe cross-section obtained via wire-mesh sensor indicated a significant amount of water near to the pipe wall for the three different dispersed flow patterns identified in this study: oil-in-water homogeneous dispersion (o/w H), oil-in-water non-homogeneous dispersion (o/w NH) and Dual continuous (Do/w and Dw/o). The phase slip might be explained by the existence of a water film surrounding the homogeneous mixture of oil-in-water in a hidrofilic-oilfobic pipe. (author)

Rodriguez, Iara H.; Yamaguti, Henrique K.B.; de Castro, Marcelo S.; Rodriguez, Oscar M.H. [Department of Mechanical Engineering, Engineering School of Sao Carlos, University of Sao Paulo (USP), Av. Trabalhador Sao Carlense, 400, 13566-970 Sao Carlos, SP (Brazil); Da Silva, Marco J. [Forschungszentrum Dresden-Rossendorf e. V., Institute of Safety Research, PO Box 510119, 01314 Dresden (Germany)

2011-01-15T23:59:59.000Z

15

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...

16

A kinetic scheme for pressurised flows in non uniform closed water pipes  

E-Print Network [OSTI]

A kinetic scheme for pressurised flows in non uniform closed water pipes C. Bourdarias1 , M. Ersoy1- tions of transient pressurised flows in closed water pipe with non uniform sections. Firstly, we detail is lastly performed in the case of a water hammer in an uniform pipe: we compare the numerical results

Paris-Sud XI, Université de

17

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 of Exeter, North Park Road, Exeter EX4 4QF, UK The economic and social costs of pipe failures in water for critical pipes that balance investment with expected benefits in a risk-based management context

Fernandez, Thomas

18

Submersible Survey Along the Honolulu Sea Water Air Conditioning LLC Pipe Route to Provide Data  

E-Print Network [OSTI]

1 Submersible Survey Along the Honolulu Sea Water Air Conditioning LLC Pipe Route to Provide Data, University of Hawaii 2Honolulu Seawater Air Conditioning, LLC KOK & Pisces V #12;2 HSWAC Pipe Route Survey

19

Augmentation of Rural Piped Water Schemes for Supply of drinking water to tanker fed villages.  

E-Print Network [OSTI]

Augmentation of Rural Piped Water Schemes for Supply of drinking water to tanker fed villages-3000mm and biggest reservoirs like Tansa, Vaitarana and Bhatsa for supplying drinking water to Mumbai city. Many solutions have been explored in the past to provide drinking water security to people

Sohoni, Milind

20

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

Note: This page contains sample records for the topic "flush water piping" 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

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

22

A spatial and temporal analysis for long term renewal of water pipes  

E-Print Network [OSTI]

A spatial and temporal analysis for long term renewal of water pipes Youssef TLILI*,** , Amir NAFI deals with the problematic of establishing priorities for pipes that should be selected for rehabilitation. The developed approach is based on the discrimination of vulnerable pipes by a spatial

Paris-Sud XI, Université de

23

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

24

Evaluation of Contaminant Mixing in Rainwater Harvesting First Flush Diverters  

E-Print Network [OSTI]

of the collected water away from storage is a technique used to improve harvested rainwater water quality prior to storage. Six configurations of a downspout first flush diverter were constructed and tested in the laboratory. The configurations of diverters were...

Mechell, Justin K.

2010-01-14T23:59:59.000Z

25

Head-Loss Calculations Question: Gudwanwadi, of population 400, is to be served by a piped water  

E-Print Network [OSTI]

Head-Loss Calculations Question: Gudwanwadi, of population 400, is to be served by a piped water away from a tank which is about 20m above Gudwanwadi. The supply comes in a pipe with cross-section 20 sq.cm. The head-loss in this pipe is roughly 2m per km. per meter/sec of velocity of water through

Sohoni, Milind

26

A Cold Water Pipe for an OTEC Pilot Plant: Design Considerations  

E-Print Network [OSTI]

A Cold Water Pipe for an OTEC Pilot Plant: Design Considerations Kara Silver Abstract Ocean Thermal Energy Conversion (OTEC) is a baseload renewable technology for tropical countries and islands. In order

Frandsen, Jannette B.

27

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

28

OTEC Advanced Composite Cold Water Pipe: Final Technical Report  

SciTech Connect (OSTI)

Ocean Thermal Energy Conversion can exploit natural temperature gradients in the oceans to generate usable forms of energy (for example, cost-competitive baseload electricity in tropical regions such as Hawaii) free from fossil fuel consumption and global warming emissions.The No.1 acknowledged challenge of constructing an OTEC plant is the Cold Water Pipe (CWP), which draws cold water from 1000m depths up to the surface, to serve as the coolant for the OTEC Rankine cycle. For a commercial-scale plant, the CWP is on the order of 10m in diameter.This report describes work done by LMSSC developing the CWP for LM MS2 New Ventures emerging OTEC business. The work started in early 2008 deciding on the minimum-cost CWP architecture, materials, and fabrication process. In order to eliminate what in previous OTEC work had been a very large assembly/deployment risk, we took the innovative approach of building an integral CWP directly from theOTEC platform and down into the water. During the latter half of 2008, we proceeded to a successful small-scale Proof-of-Principles validation of the new fabrication process, at the Engineering Development Lab in Sunnyvale. During 2009-10, under the Cooperative Agreement with the US Dept. of Energy, we have now successfully validated key elements of the process and apparatus at a 4m diameter scale suitable for a future OTEC Pilot Plant. The validations include: (1) Assembly of sandwich core rings from pre-pultruded hollow 'planks,' holding final dimensions accurately; (2) Machine-based dispensing of overlapping strips of thick fiberglass fabric to form the lengthwise-continuous face sheets, holding accurate overlap dimensions; (3) Initial testing of the fabric architecture, showing that the overlap splices develop adequate mechanical strength (work done under a parallel US Naval Facilities Command program); and (4) Successful resin infusion/cure of 4m diameter workpieces, obtaining full wet-out and a non-discernable knitline between successive stepwise infusions.

Dr. Alan Miller; Matthew Ascari

2011-09-12T23:59:59.000Z

29

Level Set Based Simulations of Two-Phase Oil-Water Flows in Pipes  

E-Print Network [OSTI]

application is the lubricated pipelining of crude oil by the addition of water. We want to e?ciently transportLevel Set Based Simulations of Two-Phase Oil-Water Flows in Pipes Hyeseon Shim July 31, 2000 Abstract We simulate the axisymmetric pipeline transportation of oil and water numerically under

Soatto, Stefano

30

ALCOHOL FLUSHING FOR REMOVING DNAPL'S FROM CLAY AND SAND LAYERED AQUIFER SYSTEMS  

SciTech Connect (OSTI)

Alcohol flushing, also called cosolvent flushing, is a relatively new in-situ remediation technology that shows promise for removing organic solvents from the soil and groundwater. Soil and groundwater contamination from organic solvents and petroleum products is one of the most serious and widespread environmental problems of our time. Most of the DOE facilities and inactive sites are experiencing soil and groundwater contamination from organic solvents. These water immiscible solvents have entered the subsurface from leaking underground storage tanks and piping, and from past waste handling and disposal practices such as leaking lagoons, holding ponds and landfills. In many cases, they have traveled hundreds of feet down into the saturated zone. If left in the soil, these chemicals may pose a significant environmental and human health risk. Alcohol flushing has potential for application to spilled solvents located deep within the saturated zone which are difficult if not impossible to remove by current remediation strategies, thus, greatly expediting restoration time, reducing total remediation cost and reducing risk.

N.J. Hayden; P. Padgett; C. Farrell; J. Diebold; X. Zhou; M. Hood

1999-08-01T23:59:59.000Z

31

Piping flow erosion in water retaining structures: inferring erosion rates from hole erosion tests and quantifying the failure time  

E-Print Network [OSTI]

Piping flow erosion in water retaining structures: inferring erosion rates from hole erosion tests-en-Provence Cedex 5, France E-mail: stephane.bonelli@cemagref.fr Abstract The piping flow erosion process, involving structures. Such a pipe can be imputed to roots or burrows. The coefficient of erosion must be known in order

Paris-Sud XI, Université de

32

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

33

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

34

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.

35

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

36

Alcohol flushing for enhanced removal of coal tar from contaminated soils  

SciTech Connect (OSTI)

Alcohol flushing for enhancing the removal of coal tar from contaminated soils and reducing coal tar concentrations in the aqueous-phase leachate was investigated. Four soil columns were packed with relatively undisturbed coal tar contaminated soils collected from a former coal gasification site. These columns were leached with water and then flushed with isopropyl alcohol (IPA) solutions. Initially, total coal tar concentrations in water leachate ranged from = 0.1 to 150 mg/L for the four columns. Coal tar concentrations in the column effluent generally increased three to five orders of magnitude during the initial IPA flush. Each column was flushed with 1-3 pore volumes of an IPA solution. Reduction of coal tar concentrations in water leachate, attributed to the alcohol flushing, was noted in three of the four columns. The total coal tar removed from the soil columns during the IPA flushes constituted from 54 to 97% of the total coal tar removed during both water leaching (240-800 pore volumes) and alcohol flushing (1-3 pore volumes). The alcohol flushing removed from 3 to 19 % of the total coal tar in the various soil columns. Results indicated that alcohol flushing can enhance the removal of coal tar from contaminated soils and can reduce the aqueous-phase coal tar concentrations in the leachate. 16 refs., 5 figs., 3 tabs.

Hayden, N.J. [Univ. of Vermont, Burlington, VT (United States); Van der Hoven, E.J. [Living Technologies, Inc., Burlington, VT (United States)

1996-11-01T23:59:59.000Z

37

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

38

Air entrainment in transient flows in closed water pipes: a two-layer approach  

E-Print Network [OSTI]

In this paper, we first construct a model for transient free surface flows that takes into account the air entrainment by a sytem of 4 partial differential equations. We derive it by taking averaged values of gas and fluid velocities on the cross surface flow in the Euler equations (incompressible for the fluid and compressible for the gas). Then, we propose a mathematical kinetic interpretation of this system to finally construct a well-balanced kinetic scheme having the properties of conserving the still water steady state and possesing an energy. Finally, numerical tests on closed uniforms water pipes are performed and discussed.

Bourdarias, Christian; Gerbi, Stphane

2009-01-01T23:59:59.000Z

39

Automatic flush valve performance (gallons per flush) measured from fixtures in a mixed-use classroom/office building at Texas A&M University  

E-Print Network [OSTI]

flush valve performance (gpf) of fixtures in a mixed use classroom building at Texas A&M University. Water consumption (gpf) among three types of fixtures; low-consumption manual, old optic automatic and improved optic automatic systems are measured...

Lertbannaphong, Salilla

2005-08-29T23:59:59.000Z

40

Report of the US Nuclear Regulatory Commission Piping Review Committee. Volume 1. Investigation and evaluation of stress corrosion cracking in piping of boiling water reactor plants  

SciTech Connect (OSTI)

IGSCC in BWR piping is occurring owing to a combination of material, environment, and stress factors, each of which can affect both the initiation of a stress-corrosion crack and the rate of its subsequent propagation. In evaluating long-term solutions to the problem, one needs to consider the effects of each of the proposed remedial actions. Mitigating actions to control IGSCC in BWR piping must be designed to alleviate one or more of the three synergistic factors: sensitized material, the convention BWR environment, and high tensile stresses. Because mitigating actions addressing each of these factors may not be fully effective under all anticipated operating conditions, mitigating actions should address two and preferably all three of the causative factors; e.g., material plus some control of water chemistry, or stress reversal plus controlled water chemistry.

Not Available

1984-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "flush water piping" 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

World Toilet Day: Celebrate Sanitation and Efficient Flushing...  

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

a new kind of water closet in her palace at Richmond: a raised cistern with a small pipe down which water ran when released by a valve. But it took another 200 years before...

42

Rejuvenating Permeable Reactive Barriers by Chemical Flushing  

Broader source: Energy.gov [DOE]

Final Report:Rejuvenating Permeable Reactive Barriers by Chemical Flushing,U.S. Environmental Protection Agency, Region 8 Support.August 2004

43

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

44

Installation Of Service Connections For Sensors Or Transmitters In Buried Water Pipes  

DOE Patents [OSTI]

A system for installing warning units in a buried pipeline. A small hole is drilled in the ground to the pipeline. A collar is affixed to one of the pipes of the pipeline. A valve with an internal passage is connected to the collar. A hole is drilled in the pipe. A warning unit is installed in the pipe by moving the warning unit through the internal passage, the collar, and the hole in the pipe.

Burnham, Alan K. (Livermore, CA); Cooper, John F. (Oakland, CA)

2006-02-21T23:59:59.000Z

45

Evaluation of Soil Flushing for Application to the Deep Vadose Zone in the Hanford Central Plateau  

SciTech Connect (OSTI)

Soil flushing was included in the Deep Vadose Zone Treatability Test Plan for the Hanford Central Plateau as a technology with the potential to remove contaminants from the vadose zone. Soil flushing operates through the addition of water, and if necessary an appropriate mobilizing agent, to mobilize contaminants and flush them from the vadose zone and into the groundwater where they are subsequently captured by a pump-and-treat system. There are uncertainties associated with applying soil flushing technology to contaminants in the deep vadose zone at the Hanford Central Plateau. The modeling and laboratory efforts reported herein are intended to provide a quantitative assessment of factors that impact water infiltration and contaminant flushing through the vadose zone and into the underlying groundwater. Once in the groundwater, capture of the contaminants would be necessary, but this aspect of implementing soil flushing was not evaluated in this effort. Soil flushing was evaluated primarily with respect to applications for technetium and uranium contaminants in the deep vadose zone of the Hanford Central Plateau.

Truex, Michael J.; Oostrom, Martinus; Zhang, Z. F.; Carroll, Kenneth C.; Schramke, Janet A.; Wietsma, Thomas W.; Tartakovsky, Guzel D.; Gordon, Kathryn A.; Last, George V.

2010-11-01T23:59:59.000Z

46

Reservoir Sedimentation Different Type of Flushing -Friendly Flushing  

E-Print Network [OSTI]

]. Shortage of sediment (coarse materials) leads to bed incision (hungry water effect, M. Kondolf concept, water supply, scouring of dyke toe and piles of bridges, shortage of local inundations sending in water resources. Both companies have been working in close collaboration for years in hydrology

Boyer, Edmond

47

Rainwater harvesting systems that collect and convey rain-water from roofs to storage tanks are often the best or only  

E-Print Network [OSTI]

tanks are often the best or only source of water for many communities in the developing world. A common are swept into the storage tank along with the rainwater. While some systems divert the "first flush into gutters, through a series of pipes and into storage tanks. Three rainwater harvesting systems

Polz, Martin

48

Evaluation of sea water piping system after fifteen years of service  

SciTech Connect (OSTI)

Seawater is the main cooling medium in the petrochemical plant. Failure of the seawater piping systems could lead to total shutdown of the plant. The main piping system in the plant consists of prestressed concrete cylinder pipe (PCCP), cement mortar--lined carbon steel, fiberglass and nickel-copper alloy N04400/ASTM B165 pipe. After more than fifteen years of experience with these materials, evaluation was made to select the most durable material for replacement projects and new construction. This paper discusses the problems associated with each material, repair procedure and materials selection decisions for the long-term operation of the plant.

Al Beed, A.A. [Saudi Petrochemical Co. (Saudi Arabia); Ali, M. [SABIC R and D (Saudi Arabia)

1999-11-01T23:59:59.000Z

49

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

50

Northward Market Extension for Passive Solar Water Heaters by Using Pipe Freeze Protection with Freeze-Tolerant Piping: Preprint  

SciTech Connect (OSTI)

Conference paper regarding research in freeze-protection methods that could extend market acceptance for passive solar domestic water heating systems in more northern climates if the U.S.

Burch, J.; Heater, M.; Brandemuhl, M.; Krarti, M.

2006-05-01T23:59:59.000Z

51

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

E-Print Network [OSTI]

with Internal Temperature, Pressure and Visual Observations. IDecember 1989) Thomas Raymond Reinarts, B. S. , Texas A8M University Chair of Advisory Committee: Dr. Frederick Best In a set of transient heat pipe experiments vapor space and wick... LIST OF TABLES Page Table 1. Outer Aluminum Wall Temperatures Observed and Predicted 79 Table 2. Summary of Measured Dryout, Rewet and Melting Front 126 Velocities LIST OF FIGURES Figure 1. Typical Heat Pipe Diagram Figure 2. Curvature of Vapor...

Reinarts, Thomas Raymond

1989-01-01T23:59:59.000Z

52

Data quality objectives for PUREX deactivation flushing  

SciTech Connect (OSTI)

This Data Quality Objection (DQO) defines the sampling and analysis requirements necessary to support the deactivation of the Plutonium-Uranium Extraction (PUREX) facility vessels that are regulated by WAC 173-303. Specifically, sampling and analysis requirements are identified for the flushing operations that are a major element of PUREX deactivation.

Bhatia, R.K.

1995-04-01T23:59:59.000Z

53

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

54

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

55

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

56

Pipe weld crown removal device  

DOE Patents [OSTI]

A device is provided for grinding down the crown of a pipe weld joining aligned pipe sections so that the weld is substantially flush with the pipe sections joined by the weld. The device includes a cage assembly comprising a pair of spaced cage rings adapted to be mounted for rotation on the respective pipe sections on opposite sides of the weld, a plurality of grinding wheels, supported by the cage assembly for grinding down the crown of the weld, and a plurality of support shafts, each extending longitudinally along the joined pipe sections, parallel thereto, for individually mounting respective grinding wheels. Each end of the support shafts is mounted for rotation in a bearing assembly housed within a radially directed opening in a corresponding one of the cage rings so as to provide radial movement of the associated shaft, and thus of the associated grinding wheel, towards and away from the weld. A first drive sprocket provides rotation of the cage assembly around the pipe sections while a second drive unit, driven by a common motor, provides rotation of the grinding wheels.

Sword, Charles K. (Pleasant Hills, PA); Sette, Primo J. (West Newton, PA)

1992-01-01T23:59:59.000Z

57

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

58

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

59

Method of prevention of deposits in the pipes of waste heat boilers  

SciTech Connect (OSTI)

A process is disclosed for preventing deposits in the pipes of waste heat boilers employed for cooling gases in the partial autothermal oxidation of fossil fuels to prepare hydrogen or synthesis gases, wherein the pipes are flushed, at the operating temperature, with hydrogen-containing gases which contain little or no H/sub 2/S.

Gettert, H.; Kaempfer, K.

1983-12-13T23:59:59.000Z

60

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

Note: This page contains sample records for the topic "flush water piping" 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

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.

62

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

63

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

64

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

65

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

66

Diffusion in Flexible Pipes Susanne Brogaard Kristensen  

E-Print Network [OSTI]

to improveflexible pipes used in crude oil transport. This report evaluates the progress made during the first year and water permeate from the inner of the pipe to the annulus, corrosion of the pressure reinforcements

67

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

E-Print Network [OSTI]

studied in this thesis is the chilled water system at the Dallas/Fort Worth International Airport (DFW Airport). This system has the problem of low delta-T under low cooling loads. When the chilled water flow is much lower than the design conditions at low...

Li, Nanxi 1986-

2012-12-05T23:59:59.000Z

68

Biodegradation and flushing of MBT wastes  

SciTech Connect (OSTI)

Highlights: Stabilization was achieved for MBT wastes of different degrees of pretreatment. About 92% reduction in the gas generation compared with raw MSW. Pretreatment resulted in reduced TOC, nitrogen and heavy metals in leachate. A large proportion of carbon and nitrogen remained in the waste material. - Abstract: Mechanicalbiological treatment (MBT) processes are increasingly being adopted as a means of diverting biodegradable municipal waste (BMW) from landfill, for example to comply with the EU Landfill Directive. However, there is considerable uncertainty concerning the residual pollution potential of such wastes. This paper presents the results of laboratory experiments on two different MBT waste residues, carried out to investigate the remaining potential for the generation of greenhouse gases and the flushing of contaminants from these materials when landfilled. The potential for gas generation was found to be between 8% and 20% of that for raw MSW. Pretreatment of the waste reduced the potential for the release of organic carbon, ammoniacal nitrogen, and heavy metal contents into the leachate; and reduced the residual carbon remaining in the waste after final degradation from ?320 g/kg dry matter for raw MSW to between 183 and 195 g/kg dry matter for the MBT wastes.

Siddiqui, A.A., E-mail: aasiddiqui.cv@amu.ac.in [Department of Civil Engineering, Aligarh Muslim University, Aligarh 202002 (India); Richards, D.J.; Powrie, W. [Waste Management Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton SO17 1BJ (United Kingdom)

2013-11-15T23:59:59.000Z

69

The Pipe vs. The Shed: Waste Water compared with Natural Hydrology in an Urban Setting  

E-Print Network [OSTI]

Water compared with Natural Hydrology in an Urban Setting Bypaper was to compare the hydrology of the East Bay Municipala stream and watershed hydrology. Using stream flow data for

Lather, Alaska; Wozniak, Monika

2011-01-01T23:59:59.000Z

70

Assessment of US shipbuilding current capability to build a commercial OTEC platform and a cold water pipe  

SciTech Connect (OSTI)

Lowry and Hoffman Associates Inc. (LHA) performed for ORI an analysis of the shipbuilding requirements for constructing an OTEC plant, and the available shipyard assets which could fulfill these requirements. In addition, several shipyards were queried concerning their attitudes towards OTEC. In assessing the shipbuilding requirements for an OTEC plant, four different platform configurations were studied and four different designs of the cold water pipe (CWP) were examined. The platforms were: a concrete ship design proposed by Lockheed; concrete spar designs with internal heat exchangers (IHE) (Rosenblatt) and external heat exchangers (XHE) (Lockheed); and a steel ship design proposed by Gibbs and Cox. The types of materials examined for CWP construction were: steel, fiber reinforced plastic (FPR), elastomer, and concrete. The report is organized io three major discussion areas. All the construction requirements are synthesized for the four platforms and CWPs, and general comments are made concerning their availability in the US. Specific shipbuilders facilities are reviewed for their applicability to building an OTEC plant, an assessment of the shipyards general interest in the OTEC program is presented providing an insight into their nearterm commercial outlook. The method of determining this interest will depend largely on a risk analysis of the OTEC system. Also included are factors which may comprise this analysis, and a methodology to ascertain the risk. In the appendices, various shipyard specifications are presented, shipyard assessment matrices are given, graphs of various shipyard economic outlooks are provided, and definitions of the risk factors are listed. (WHK)

Komelasky, M. C. [ed.

1980-03-01T23:59:59.000Z

71

Experimental on two sensors combination used in horizontal pipe gas-water two-phase flow  

SciTech Connect (OSTI)

Gas-water two phase flow phenomenon widely exists in production and living and the measurement of it is meaningful. A new type of long-waist cone flow sensor has been designed to measure two-phase mass flow rate. Six rings structure of conductance probe is used to measure volume fraction and axial velocity. The calibration of them have been made. Two sensors have been combined in horizontal pipeline experiment to measure two-phase flow mass flow rate. Several model of gas-water two-phase flow has been discussed. The calculation errors of total mass flow rate measurement is less than 5% based on the revised homogeneous flow model.

Wu, Hao; Dong, Feng [Tianjin Key Laboratory of Process Measurement and Control, School of Electrical Engineering and Automation, Tianjin University, Tianjin (China)

2014-04-11T23:59:59.000Z

72

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

73

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

74

ANALYSIS OF THE LEACHING EFFICIENCY OF INHIBITED WATER AND TANK SIMULANT IN REMOVING RESIDUES ON THERMOWELL PIPES  

SciTech Connect (OSTI)

A key component for the accelerated implementation and operation of the Salt Waste Processing Facility (SWPF) is the recovery of Tank 48H. Tank 48H is a type IIIA tank with a maximum capacity of 1.3 million gallons. Video inspection of the tank showed that a film of solid material adhered to the tank internal walls and structures between 69 inch and 150 inch levels. From the video inspection, the solid film thickness was estimated to be 1mm, which corresponds to {approx}33 kg of TPB salts (as 20 wt% insoluble solids) (1). This film material is expected to be easily removed by single-rinse, slurry pump operation during Tank 48H TPB disposition via aggregation processing. A similar success was achieved for Tank 49H TPB dispositioning, with slurry pumps operating almost continuously for approximately 6 months, after which time the tank was inspected and the film was found to be removed. The major components of the Tank 49H film were soluble solids - Na{sub 3}H(CO{sub 3}){sub 2} (Hydrated Sodium Carbonate, aka: Trona), Al(OH){sub 3} (Aluminum Hydroxide, aka: Gibbsite), NaTPB (Sodium Tetraphenylborate), NaNO{sub 3} (Sodium Nitrate) and NaNO{sub 2} (Sodium Nitrite) (2). Although the Tank 48H film is expected to be primarily soluble solids, it may not behave the same as the Tank 49H film. There is a risk that material on the internal surfaces of Tank 48H could not be easily removed. As a risk mitigation activity, the chemical composition and leachability of the Tank 48H film are being evaluated prior to initiating tank aggregation. This task investigated the dissolution characteristics of Tank 48H solid film deposits in inhibited water and DWPF recycle. To this end, SRNL received four separate 23-inch long thermowell-conductivity pipe samples which were removed from the tank 48H D2 risers in order to determine: (1) the thickness of the solid film deposit, (2) the chemical composition of the film deposits, and (3) the leaching behavior of the solid film deposit in inhibited water (IW) and in DWPF recycle simulant (3).

Fondeur, F.; White, T.; Oji, L.; Martino, C.; Wilmarth, B.

2011-10-20T23:59:59.000Z

75

A Spatio-Temporal exploratory analysis of pipe-failure incidents in the Water Distribution Network of Limassol, Cyprus  

E-Print Network [OSTI]

in the degradation of the WDN of Limassol. The distribution of pipe-failure incidents was studied at the level of District Metered Areas (DMA) boundary classifications and at the location level using point-pattern analysis methodologies. A modified version...

Gagatsis, Anastasios

2011-08-10T23:59:59.000Z

76

Addendum to "Proof Rules for Flush Channels" Scott Stoller  

E-Print Network [OSTI]

identical messages (i.e., messages with the same contents and the same F-channel message type) along does not contain enough information to compute + (i.e., there is no definition of the "transitiveAddendum to "Proof Rules for Flush Channels" Scott Stoller Abstract-- The logic presented in [1

Stoller, Scott

77

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

Energy Savers [EERE]

about your pipes. If you live in a place where it freezes, you probably don't have any water pipes in the truly "cold" zone of your house-that is, in a place where there's no...

78

The Advantages of HDPE Piping & Vaults in the  

E-Print Network [OSTI]

First in the world to produce 1600mm PE pipes Production of district heating pipes starts 1984 & telecom Waste water treatment House drainage Under ground ventilation Renovation District heating & cooling Special constructions Marine intakes and outfalls Welding, extrusion and blown

79

Pipe Freeze Prevention for Passive Solar Water Heaters Using a Room-Air Natural Convection Loop: Preprint  

SciTech Connect (OSTI)

Conference paper regarding research in the use of freeze prevention for passive solar domestic water heating systems.

Burch, J.; Heater, M.; Brandemuhl, M.; Krarti, M.

2006-05-01T23:59:59.000Z

80

Culvert pipe materials and durability: Making the right  

E-Print Network [OSTI]

Culvert pipe materials and durability: Making the right selection for Minnesota Presented by: Craig. The actual service life of infrastructure is less than expected 2. Advances in pipe materials & federal Manual (Chapter 2) #12;What causes pipes to deteriorate? · Acidity/alkalinity of water and soil (p

Minnesota, University of

Note: This page contains sample records for the topic "flush water piping" 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

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

82

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

83

Reusable pipe flange covers  

DOE Patents [OSTI]

A molded, flexible pipe flange cover for temporarily covering a pipe flange and a pipe opening includes a substantially round center portion having a peripheral skirt portion depending from the center portion, the center portion adapted to engage a front side of the pipe flange and to seal the pipe opening. The peripheral skirt portion is formed to include a plurality of circumferentially spaced tabs, wherein free ends of the flexible tabs are formed with respective through passages adapted to receive a drawstring for pulling the tabs together on a back side of the pipe flange.

Holden, James Elliott (Simpsonville, SC); Perez, Julieta (Houston, TX)

2001-01-01T23:59:59.000Z

84

Glass heat pipe evacuated tube solar collector  

DOE Patents [OSTI]

A glass heat pipe is adapted for use as a solar energy absorber in an evacuated tube solar collector and for transferring the absorbed solar energy to a working fluid medium or heat sink for storage or practical use. A capillary wick is formed of granular glass particles fused together by heat on the inside surface of the heat pipe with a water glass binder solution to enhance capillary drive distribution of the thermal transfer fluid in the heat pipe throughout the entire inside surface of the evaporator portion of the heat pipe. Selective coatings are used on the heat pipe surface to maximize solar absorption and minimize energy radiation, and the glass wick can alternatively be fabricated with granular particles of black glass or obsidian.

McConnell, Robert D. (Lakewood, CO); Vansant, James H. (Tracy, CA)

1984-01-01T23:59:59.000Z

85

Sediment Flushing at the Nakdong River Estuary Barrage ; P. Y. Julien, M.ASCE2  

E-Print Network [OSTI]

Case Study Sediment Flushing at the Nakdong River Estuary Barrage U. Ji1 ; P. Y. Julien, M.ASCE2 but causes sedimentation problems in the Lower Nakdong River in South Korea. Its mitigation requires on the possibility of replacing mechanical dredging with sediment flushing through gate operations changes at NREB

Julien, Pierre Y.

86

Final Report- Rejuvenating Permeable Reactive Barriers by Chemical Flushing, U.S. Environmental Protection Agency Region 8 Support  

Broader source: Energy.gov [DOE]

Final Report - Rejuvenating Permeable Reactive Barriers by Chemical Flushing, U.S. Environmental Protection Agency Region 8 Support

87

WLDF 311 Treefrog Study; Fall 2007 Pipe Checking Protocol  

E-Print Network [OSTI]

WLDF 311 Treefrog Study; Fall 2007 Pipe Checking Protocol: 1. Arrange time to meet/travel to study that each pipe is checked. If there is a frog(s), then: a. Take the trap off the stake without letting frogs). If the frogs don't come out, put some more water in the pipe, swirl and "swoosh" them out. b. Pick up each frog

Johnson, Matthew

88

Rotary seal with enhanced lubrication and contaminant flushing  

DOE Patents [OSTI]

A resilient, ring shaped interference-type hydrodynamic rotary seal having waves on the lubricant side which provide increased film thickness and flushing action by creating contact pressure induced angulated restrictions formed by abrupt restrictive diverters. The angulated restrictions are defined by projecting ridges, corners at the trailing edge of the waves, or simply by use of a converging shape at the trailing edge of the waves which is more abrupt than the gently converging hydrodynamic inlet shape at the leading edge of the waves. The abrupt restrictive diverter performs two functions; a restricting function and a diverting function. The angulated restrictions cause a local film thickness restriction which produces a damming effect preventing a portion of the lubricant from leaking out of the dynamic sealing interface at the trailing edge of the wave, and results in a much thicker lubricant film thickness under the waves. This contributes to more film thickness in the remainder of the dynamic sealing interface toward the environment because film thickness tends to decay gradually rather than abruptly due to the relative stiffness of the seal material. Because of the angle of the abrupt restrictive diverter relative to the relative rotation direction, in conjunction with the restriction or damming effect, a strong diverting action is produced which pumps lubricant across the dynamic sealing interface toward the environment. The lubricant diversion is caused by the component of the rotational velocity tangent to the abrupt restrictive diverter. The component of rotational velocity normal to the abrupt restrictive diverter causes a portion of the lubricant film to be pumped past the abrupt restrictive diverter, thereby assuring adequate lubrication thereof.

Dietle, Lannie L. (Sugar Land, TX)

2000-01-01T23:59:59.000Z

89

Abrasion resistant heat pipe  

DOE Patents [OSTI]

A specially constructed heat pipe for use in fluidized bed combustors. Two distinct coatings are spray coated onto a heat pipe casing constructed of low thermal expansion metal, each coating serving a different purpose. The first coating forms aluminum oxide to prevent hydrogen permeation into the heat pipe casing, and the second coating contains stabilized zirconium oxide to provide abrasion resistance while not substantially affecting the heat transfer characteristics of the system.

Ernst, Donald M. (Leola, PA)

1984-10-23T23:59:59.000Z

90

Abrasion resistant heat pipe  

DOE Patents [OSTI]

A specially constructed heat pipe is described for use in fluidized bed combustors. Two distinct coatings are spray coated onto a heat pipe casing constructed of low thermal expansion metal, each coating serving a different purpose. The first coating forms aluminum oxide to prevent hydrogen permeation into the heat pipe casing, and the second coating contains stabilized zirconium oxide to provide abrasion resistance while not substantially affecting the heat transfer characteristics of the system.

Ernst, D.M.

1984-10-23T23:59:59.000Z

91

Internal pipe attachment mechanism  

DOE Patents [OSTI]

An attachment mechanism for repairing or extending fluid carrying pipes, casings, conduits, etc. utilizing one-way motion of spring tempered fingers to provide a mechanical connection between the attachment mechanism and the pipe. The spring tempered fingers flex to permit insertion into a pipe to a desired insertion depth. The mechanical connection is accomplished by reversing the insertion motion and the mechanical leverage in the fingers forces them outwardly against the inner wall of the pipe. A seal is generated by crushing a sealing assembly by the action of setting the mechanical connection.

Bast, Richard M. (Livermore, CA); Chesnut, Dwayne A. (Pleasanton, CA); Henning, Carl D. (Livermore, CA); Lennon, Joseph P. (Livermore, CA); Pastrnak, John W. (Livermore, CA); Smith, Joseph A. (Livermore, CA)

1994-01-01T23:59:59.000Z

92

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

93

Internal pipe attachment mechanism  

DOE Patents [OSTI]

An attachment mechanism is described for repairing or extending fluid carrying pipes, casings, conduits, etc. utilizing one-way motion of spring tempered fingers to provide a mechanical connection between the attachment mechanism and the pipe. The spring tempered fingers flex to permit insertion into a pipe to a desired insertion depth. The mechanical connection is accomplished by reversing the insertion motion and the mechanical leverage in the fingers forces them outwardly against the inner wall of the pipe. A seal is generated by crushing a sealing assembly by the action of setting the mechanical connection. 6 figures.

Bast, R.M.; Chesnut, D.A.; Henning, C.D.; Lennon, J.P.; Pastrnak, J.W.; Smith, J.A.

1994-12-13T23:59:59.000Z

94

Report of clean out and flushing of UO{sub 3} Plant processing equipment: Revision 1  

SciTech Connect (OSTI)

The UO{sub 3} Plant went through a clean out leading to the deactivation of the facility. This clean out consisted of three phases. Phase 1 consisted of the removal of residual process material and the deactivation of most process equipment and instrumentation. Phase 2 consisted of the fixing or removal of contamination so storm water processing would be no longer required. Phase 3 consisted of the remaining activities that had to be completed before the facility was turned over to the Surplus Facility Program. Since the activities of Phase 2 and 3 were closely related, these two phases were worked simultaneously. The first part of this document summarizes the Phase 1 clean out procedures and their results. Phase 1 was completed on February 28, 1994. The second part summarizes the Phase 2/3 clean out procedures and their results. Phase 2/3 was completed before December 31, 1994. Because tanks and equipment were flushed simultaneously or in a specific sequence, the clean out processes are discussed per workplan.

Gonsalves, E.

1994-12-02T23:59:59.000Z

95

Splayed mirror light pipes  

SciTech Connect (OSTI)

An expression is given for the transmission of the rectangular-section mirror light pipe. The expression is used to model throughputs for simulated solar conditions over a calender year. It is found that the splaying of a mirror light pipe results in a significant increase in throughputs particularly in winter months. (author)

Swift, P.D. [School of Physical Sciences, Dublin City University, Dublin 9 (Ireland)

2010-02-15T23:59:59.000Z

96

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

97

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

98

Extendable pipe crawler  

DOE Patents [OSTI]

A pipe crawler having a front leg assembly and a back leg assembly connected together by two air cylinders, each leg assembly having four extendable legs and a pair of actuators for sliding the extendable legs radially outward to increase the range of the legs when the pipe crawler enters a section of a pipe having a larger diameter. The crawler crawls by "inchworm"-like motion, the front leg assembly and back leg assembly alternately engaging and disengaging the wall of the pipe to hold the pipe crawler as the air cylinders alternately advance the front leg assembly and bring up the rear leg assembly. The pair of actuators of each leg assembly are parallel, adjacent and opposing acting so that each slides two adjacent extendable legs radially outward.

Hapstack, Mark (North Augusta, SC)

1991-01-01T23:59:59.000Z

99

Extendable pipe crawler  

DOE Patents [OSTI]

A pipe crawler is described having a front leg assembly and a back leg assembly connected together by two air cylinders, each leg assembly having four extendable legs and a pair of actuators for sliding the extendable legs radially outward to increase the range of the legs when the pipe crawler enters a section of a pipe having a larger diameter. The crawler crawls by inchworm'-like motion, the front leg assembly and back leg assembly alternately engaging and disengaging the wall of the pipe to hold the pipe crawler as the air cylinders alternately advance the front leg assembly and bring up the rear leg assembly. The pair of actuators of each leg assembly are parallel, adjacent and opposing acting so that each slides two adjacent extendable legs radially outward. 5 figures.

Hapstack, M.

1991-05-28T23:59:59.000Z

100

SATURATED-SUBCOOLED STRATIFIED FLOW IN HORIZONTAL PIPES  

SciTech Connect (OSTI)

Advanced light water reactor systems are designed to use passive emergency core cooling systems with horizontal pipes that provide highly subcooled water from water storage tanks or passive heat exchangers to the reactor vessel core under accident conditions. Because passive systems are driven by density gradients, the horizontal pipes often do not flow full and thus have a free surface that is exposed to saturated steam and stratified flow is present.

Richard Schultz

2010-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "flush water piping" 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

FLUID-STRUCTURE INTERACTION AND TRANSIENT CAVITATION TESTS IN A T-PIECE PIPE  

E-Print Network [OSTI]

FLUID-STRUCTURE INTERACTION AND TRANSIENT CAVITATION TESTS IN A T-PIECE PIPE ARRIS S TIJSSELING. The model is a closed, water-filled, T-shaped, laboratory pipe system, where the T- junction and the three, the cavity can occupy the entire pipe cross-section, thereby separating adjacent regions of fully-liquid flow

Eindhoven, Technische Universiteit

102

A Study of Transition to Turbulence for Incompressible Pipe Flow using a  

E-Print Network [OSTI]

A Study of Transition to Turbulence for Incompressible Pipe Flow using a Spectral Finite Element and Reynolds. From his experiments on the stability of flow in a pipe [11], Reynolds observed that instability of the water in the pipe, the Reynolds num­ ber Ua=š, exceeded a certain value, depending on the experimental

Patriksson, Michael

103

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

104

Pipe Insulation Economies  

E-Print Network [OSTI]

PIPE INSULATION ECONOMIES Robert E. Schilling, P.E. Eaton Corporation Aurora, Ohio ABSTRACT Pipe Insulation Economies is a computer pro gram written in IBM basic to simplify the economic insulation thickness for an insulated pipe. Many... ECONOMIES" 30 LOCATE 10,29:PRINT"ROBERT E. SCHILLING,P.E." 40 LOCATE l2,3l:PRINT"EATON CORPORATION" 50 LOCATE l3,26:PRINT"119 Q SOUTH CHILLICOTHE ROAD" 598 ESL-IE-86-06-97 Proceedings from the Eighth Annual Industrial Energy Technology Conference...

Schilling, R. E.

105

Passive ice freezing-releasing heat pipe  

DOE Patents [OSTI]

A heat pipe device has been developed which permits completely passive ice formation and periodic release of ice without requiring the ambient temperature to rise above the melting point of water. This passive design enables the maximum amount of cooling capacity to be stored in the tank.

Gorski, Anthony J. (Lemont, IL); Schertz, William W. (Batavia, IL)

1982-01-01T23:59:59.000Z

106

A pressurized model for compressible pipe flow. Universite de Toulon, IMATH, EA 2134, 83957 La Garde, France.  

E-Print Network [OSTI]

A pressurized model for compressible pipe flow. M. Ersoy1 1 Universit´e de Toulon, IMATH, EA 2134 water pipe including friction, changes of section and slope variation. Starting from the compressible 3D framework of unsteady mixed flows in closed water pipes. This model describes the evolution

Paris-Sud XI, Université de

107

Miniature pipe crawler tractor  

DOE Patents [OSTI]

A pipe crawler tractor may comprise a half tractor assembly having a first base drive wheel, a second base drive wheel, and a top drive wheel. The drive wheels are mounted in spaced-apart relation so that the top drive wheel is positioned between the first and second base drive wheels. The mounting arrangement is also such that the first and second base drive wheels contact the inside surface of the pipe at respective first and second positions and so that the top drive wheel contacts the inside surface of the pipe at a third position, the third position being substantially diametrically opposed to the first and second positions. A control system connected to the half tractor assembly controls the rotation of the first base wheel, the second base wheel, and the top drive wheel to move the half tractor assembly within the pipe.

McKay, Mark D. (Idaho Falls, ID); Anderson, Matthew O. (Idaho Falls, ID); Ferrante, Todd A. (Westerville, OH); Willis, W. David (Idaho Falls, ID)

2000-01-01T23:59:59.000Z

108

Design of a Novel In-Pipe Reliable Leak Detector  

E-Print Network [OSTI]

Leakage is the major factor for unaccounted losses in every pipe network around the world (oil, gas, or water). In most cases, the deleterious effects associated with the occurrence of leaks may present serious economical ...

Chatzigeorgiou, Dimitris

109

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

110

Design and analysis of a flexible tendon-driven joint for in-pipe inspection robots  

E-Print Network [OSTI]

Leaks in water distribution pipelines result in potentially significant losses of water resources and energy. The detection of such leaks is crucial for effective water resource management. In-pipe robots equipped with ...

Al Hasan, Hisham H

2013-01-01T23:59:59.000Z

111

On the circulation and tidal flushing of Mobile Bay, Alabama  

E-Print Network [OSTI]

. Temperature-Salinity Data (Mobile River) . . . . . . . . . . . ~ . . 56 III. Current and Wind Data 57 Current and Wind Data (continued) Current and Wind Data (continued) IV, Mobile River-Bay Volume Segments 59 V. Mobile River-Bay Cumulative Volume... wind velocities from the South and Nest), a "norther" blew in on the 28th of October bringing lower temperatures and strong northeast winds. This situation lasted for two days, and the effects on the water movements in the bay are rather clearly...

Austin, George Belden

1953-01-01T23:59:59.000Z

112

Remotely operated pipe connector  

DOE Patents [OSTI]

An apparatus for remotely assembling and disassembling a Graylock type coctor between a pipe and a closure for the pipe includes a base and a receptacle on the base for the closure. The pipe is moved into position vertically above the closure by a suitable positioning device such that the flange on the pipe is immediately adjacent and concentric with the flange on the closure. A moving device then moves two semicircular collars from a position free of the closure to a position such that the interior cam groove of each collar contacts the two flanges. Finally, a tensioning device automatically allows remote tightening and loosening of a nut and bolt assembly on each side of the collar to cause a seal ring located between the flanges to be compressed and to seal the closure. Release of the pipe and the connector is accomplished in the reverse order. Preferably, the nut and bolt assembly includes an elongate shaft portion on which a removable sleeve is located.

Josefiak, Leonard J. (Scotia, NY); Cramer, Charles E. (Guilderford, NY)

1988-01-01T23:59:59.000Z

113

Performance of a mixing entropy battery alternately flushed with wastewater effluent and  

E-Print Network [OSTI]

Performance of a mixing entropy battery alternately flushed with wastewater effluent and seawater. Coastal wastewater treatment plants discharge a continuous stream of low salinity effluent to the ocean cell, the net energy recovery was 0.11 kW h per m3 of wastewater effluent. When twelve cells were

Cui, Yi

114

Apparatus for moving a pipe inspection probe through piping  

DOE Patents [OSTI]

A method and apparatus 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.

Zollinger, W. Thor (Martinez, GA); Appel, D. Keith (Aiken, SC); Lewis, Gregory W. (North Augusta, SC)

1995-01-01T23:59:59.000Z

115

Heat pipes and use of heat pipes in furnace exhaust  

DOE Patents [OSTI]

An array of a plurality of heat pipe are mounted in spaced relationship to one another with the hot end of the heat pipes in a heated environment, e.g. the exhaust flue of a furnace, and the cold end outside the furnace. Heat conversion equipment is connected to the cold end of the heat pipes.

Polcyn, Adam D. (Pittsburgh, PA)

2010-12-28T23:59:59.000Z

116

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

117

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

118

Apparatus for inspecting piping  

DOE Patents [OSTI]

An inspection rabbit for inspecting piping systems having severe bends therein. The rabbit consists of a flexible, modular body containing a miniaturized eddy current inspection probe, a self-contained power supply for proper operation of the rabbit, an outer surface that allows ease of movement through piping systems and means for transmitting data generated by the inspection device. The body is preferably made of flexible polyvinyl chloride (PVC) tubing or, alternatively, silicone rubber with a shrink wrapping of polytetrafluoroethylene (TEFLON.RTM.). The body is formed to contain the power supply, preferably a plurality of batteries, and a spool of communication wire that connects to a data processing computer external to the piping system.

Zollingger, W. Thor (Martinez, GA); Appel, D. Keith (Aiken, SC); Park, Larry R. (Raleigh, NC)

1995-01-01T23:59:59.000Z

119

Apparatus for inspecting piping  

DOE Patents [OSTI]

An inspection rabbit is described for inspecting piping systems having severe bends therein. The rabbit consists of a flexible, modular body containing a miniaturized eddy current inspection probe, a self-contained power supply for proper operation of the rabbit, an outer surface that allows ease of movement through piping systems and means for transmitting data generated by the inspection device. The body is preferably made of flexible polyvinyl chloride (PVC) tubing or, alternatively, silicone rubber with a shrink wrapping of polytetrafluoroethylene (TEFLON{trademark}). The body is formed to contain the power supply, preferably a plurality of batteries, and a spool of communication wire that connects to a data processing computer external to the piping system. 6 figures.

Zollingger, W.T.; Appel, D.K.; Park, L.R.

1995-03-21T23:59:59.000Z

120

Heat pipe array heat exchanger  

DOE Patents [OSTI]

A heat pipe arrangement for exchanging heat between two different temperature fluids. The heat pipe arrangement is in a ounterflow relationship to increase the efficiency of the coupling of the heat from a heat source to a heat sink.

Reimann, Robert C. (Lafayette, NY)

1987-08-25T23:59:59.000Z

Note: This page contains sample records for the topic "flush water piping" 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

Introduction Increasing demands on limited water resources have made  

E-Print Network [OSTI]

(reclamation or reuse) an attractive option for extending water supplies. Treatment technologies have evolved has increasingly been used for municipal irrigation, toilet flushing, industrial cooling, and other varyconsiderablybetweensystems.Theuseofrecycledwater is particularly beneficial to extending water supplies in arid climates

Sanderson, Mike

122

Piping-System Solutions Using Mathcad  

E-Print Network [OSTI]

Piping-System Solutions Using Mathcad B. K. HODGE,1 ROBERT P. TAYLOR2 1 Mechanical Engineering associated with piping systems. Examples include series piping systems, parallel piping systems, and pipingScience (www.interscience.wiley.com.); DOI 10.1002/cae.10010 Keywords: piping systems; Mathcad, Hardy

Kostic, Milivoje M.

123

Hydrogen Piping Experience in Chevron  

E-Print Network [OSTI]

Hydrogen Piping Experience in Chevron Refining Ned Niccolls Materials Engineer Chevron Energy Technology Company Hydrogen Pipeline Working Group Workshop August 30-31, 2005 #12;Outline 2 Overall perspectives from long term use of hydrogen piping in refining. Piping specifications and practices. The (few

124

Theoretical and experimental investigation of heat pipe solar collector  

SciTech Connect (OSTI)

Heat pipe solar collector was designed and constructed at IROST and its performance was measured on an outdoor test facility. The thermal behavior of a gravity assisted heat pipe solar collector was investigated theoretically and experimentally. A theoretical model based on effectiveness-NTU method was developed for evaluating the thermal efficiency of the collector, the inlet, outlet water temperatures and heat pipe temperature. Optimum value of evaporator length to condenser length ratio is also determined. The modelling predictions were validated using experimental data and it shows that there is a good concurrence between measured and predicted results. (author)

Azad, E. [Iranian Research Organization for Science and Technology, 71 Forsat Avenue Ferdousi sq., Tehran (Iran)

2008-09-15T23:59:59.000Z

125

Sound characteristics of a pipe with dynamically rough A. Romanova, K. V. Horoshenkov and S. J. Tait  

E-Print Network [OSTI]

Sound characteristics of a pipe with dynamically rough boundary A. Romanova, K. V. Horoshenkov the acoustic field in the pipe above a dynamically rough water surface can provide a better understanding interacting with pipe wall roughness. This work presents results from a novel experimental setup, which allows

Paris-Sud XI, Université de

126

Proc. 3rd International Conference on Hydroinformatics, Copenhagen, August 1998. Balkema, Rotterdam 1 Application of global optimization to the design of pipe networks  

E-Print Network [OSTI]

1 Application of global optimization to the design of pipe networks A.J. Abebe Arbaminch Water design of pipe networks for water distribution. Design is important it often comprises major part into pipe networks for construction and calculates the corresponding network costs. Two algorithms, adaptive

Neumaier, Arnold

127

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

128

Assessment of the Mechanical Stress Improvement Process for Mitigating Primary Water Stress Corrosion Cracking in Nickel Alloy Butt Welds in Piping Systems Approved for Leak-Before-Break  

SciTech Connect (OSTI)

This report provides an assessment of the use of Mechanical Stress Improvement Process to reduce, or decrease, stress-driven degradation, i.e., primary water stress corrosion cracking.

Sullivan, Edmund J.; Anderson, Michael T.

2013-01-01T23:59:59.000Z

129

Pipe inspection using the pipe crawler. Innovative technology summary report  

SciTech Connect (OSTI)

The US Department of Energy (DOE) continually seeks safer and more cost-effective remediation technologies for use in the decontamination and decommissioning (D and D) of nuclear facilities. In several of the buildings at the Fernald Site, there is piping that was used to transport process materials. As the demolition of these buildings occur, disposal of this piping has become a costly issue. Currently, all process piping is cut into ten-foot or less sections, the ends of the piping are wrapped and taped to prevent the release of any potential contaminants into the air, and the piping is placed in roll off boxes for eventual repackaging and shipment to the Nevada Test Site (NTS) for disposal. Alternatives that allow for the onsite disposal of process piping are greatly desired due to the potential for dramatic savings in current offsite disposal costs. No means is currently employed to allow for the adequate inspection of the interior of piping, and consequently, process piping has been assumed to be internally contaminated and thus routinely disposed of at NTS. The BTX-II system incorporates a high-resolution micro color camera with lightheads, cabling, a monitor, and a video recorder. The complete probe is capable of inspecting pipes with an internal diameter (ID) as small as 1.4 inches. By using readily interchangeable lightheads, the same system is capable of inspecting piping up to 24 inches in ID. The original development of the BTX system was for inspection of boiler tubes and small diameter pipes for build-up, pitting, and corrosion. However, the system is well suited for inspecting the interior of most types of piping and other small, confined areas. The report describes the technology, its performance, uses, cost, regulatory and policy issues, and lessons learned.

NONE

1999-05-01T23:59:59.000Z

130

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

131

Page 1 of 1 Pipe School  

E-Print Network [OSTI]

Page 1 of 1 Track B Pipe School© Sunday, January 22, 2012 Hilton Palacio Del Rio, San Antonio Selection, Terry McArthur, P.E., HDR, Inc. 9:00 Pipe Materials, Terry McArthur, P.E., HDR, Inc. 9:30 Pipe:15 Principles of Pipeline Design and Construction ­ Rigid and Flexible Pipes, Shah Rahman, Northwest Pipe

Texas at Arlington, University of

132

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

133

Gas Water Heater Energy Losses  

E-Print Network [OSTI]

Input Screens SCREEN D1: WATER HEATER SPECIFICATIONS 1. Tankthe house. Supply pipe this is the water heater inlet pipewith refills the water heater with cold water Note: The TANK

Biermayer, Peter

2012-01-01T23:59:59.000Z

134

Aerogel Impregnated Polyurethane Piping and Duct Insulation ...  

Energy Savers [EERE]

Aerogel Impregnated Polyurethane Piping and Duct Insulation Aerogel Impregnated Polyurethane Piping and Duct Insulation Emerging Technologies Project for the 2013 Building...

135

Pipe crawler with stabilizing midsection  

DOE Patents [OSTI]

A pipe crawler is described having a midsection that provides the stability and flexibility to allow the pipe crawler to negotiate curved and uneven segments of piping while traveling through piping systems. The pipe crawler comprises a front leg assembly, a rear leg assembly, a midsection with a gimbal at each end for connecting the midsection to the front and rear leg assemblies in a flexible manner, and an air cylinder for changing the distance between the front and rear leg assemblies. The pipe crawler moves in ''inch worm'' fashion with the front and rear leg assemblies alternating between an extended and a retracted position as the air cylinder moves the retracted leg assembly forward. The midsection has a plurality of legs extending radially for holding the midsection within a maximum displacement from the piping axis so that the gimbals are not pivoted to extreme angles where they might lock up or seize. When the midsection is displaced sufficiently, its legs with wheels on each end engage the interior surface of the piping and prevent further displacement. Using two gimbals divides the angle between the planes defined by the front and rear leg assemblies which also helps to prevent excessive gimbal pivoting. 5 figures.

Zollinger, W.T.; Treanor, R.C.

1994-12-27T23:59:59.000Z

136

Pipe crawler with stabilizing midsection  

DOE Patents [OSTI]

A pipe crawler having a midsection that provides the stability and flexibty to allow the pipe crawler to negotiate curved and uneven segments of piping while traveling through piping systems. The pipe crawler comprises a front leg assembly, a rear leg assembly, a midsection with a gimbal at each end for connecting the midsection to the front and rear leg assemblies in a flexible manner, and an air cylinder for changing the distance between the front and rear leg assemblies. The pipe crawler moves in "inch worm" fashion with the front and rear leg assemblies alternating between an extended and a retracted position as the air cylinder moves the retracted leg assembly forward. The midsection has a plurality of legs extending radially for holding the midsection within a maximum displacement from the piping axis so that the gimbals are not pivoted to extreme angles where they might lock up or seize. When the midsection is displaced sufficiently, its legs with wheels on each end engage the interior surface of the piping and prevent further displacement. Using two gimbals divides the angle between the planes defined by the front and rear leg assemblies which also helps to prevent excessive gimbal pivoting.

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

1994-01-01T23:59:59.000Z

137

Application of LBB to high energy piping systems in operating PWR  

SciTech Connect (OSTI)

The amendment to General Design Criterion 4 allows exclusion, from the design basis, of dynamic effects associated with high energy pipe rupture by application of leak-before-break (LBB) technology. This new approach has resulted in substantial financial savings to utilities when applied to the Pressurized Water Reactor (PWR) primary loop piping and auxiliary piping systems made of stainless steel material. To date majority of applications pertain to piping systems in operating plants. Various steps of evaluation associated with the LBB application to an operating plant are described in this paper.

Swamy, S.A.; Bhowmick, D.C. [Westinghouse Nuclear Technology Division, Pittsburgh, PA (United States)

1997-04-01T23:59:59.000Z

138

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

139

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

140

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

Note: This page contains sample records for the topic "flush water piping" 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

Methodology for Life Testing of Refractory Metal / Sodium Heat Pipes  

SciTech Connect (OSTI)

This work establishes an approach to generate carefully controlled data to find heat pipe operating life with material-fluid combinations capable of extended operation. To accomplish this goal acceleration is required to compress 10 years of operational life into 3 years of laboratory testing through a combination of increased temperature and mass fluence. Specific test series have been identified, based on American Society for Testing and Materials (ASTM) specifications, to investigate long-term corrosion rates. The refractory metal selected for demonstration purposes is a molybdenum-44.5% rhenium alloy formed by powder metallurgy. The heat pipes each have an annular crescent wick formed by hot isostatic pressing of molybdenum-rhenium wire mesh. The heat pipes are filled by vacuum distillation with purity sampling of the completed assembly. Round-the-clock heat pipe tests with 6-month destructive and non-destructive inspection intervals are conducted to identify the onset and level of corrosion. Non-contact techniques are employed to provide power to the evaporator (radio frequency induction heating at 1 to 5 kW per heat pipe) and calorimetry at the condenser (static gas gap coupled water cooled calorimeter). The planned operating temperature range extends from 1123 to 1323 K. Accomplishments before project cancellation included successful development of the heat pipe wick fabrication technique, establishment of all engineering designs, baseline operational test requirements, and procurement/assembly of supporting test hardware systems. (authors)

Martin, James J.; Reid, Robert S. [Marshall Space Flight Center, National Aeronautics and Space Administration, Huntsville, Alabama, 35812 (United States)

2006-07-01T23:59:59.000Z

142

Deployment, release and recovery of ocean riser pipes  

DOE Patents [OSTI]

An ocean thermal energy conversion facility includes a long pipe assembly which is supported at its upper end by the hull of the floating facility. Cold water flows to the facility from deep in the ocean. The pipe assembly comprises an elongate pipe construction and a weight connected to the lower end of the construction by a line of selected length. A floatation collar is connected to the construction at its upper end to cause the construction to have positive buoyancy and a center of buoyancy closer to the upper end of the construction than its center of mass. The weight renders the entire pipe assembly negatively buoyant. In the event that support of the pipe assembly should be lost, as by release of the assembly from the facility hull in an emergency, the assembly sinks to the ocean floor where it is moored by the weight. The pipe construction floats submerged above the ocean floor in a substantially vertical attitude which facilitates recovery of the assembly.

Person, Abraham (Los Alamitos, CA); Wetmore, Sherman B. (Westminster, CA); McNary, James F. (Santa Ana, CA)

1980-11-18T23:59:59.000Z

143

Household Water Quality Home Water Quality Problems  

E-Print Network [OSTI]

in water heater. Scale buildup in pipes and re duced water flow. Hard water due to calcium and magnesiumHousehold Water Quality Home Water Quality Problems­ Causes and Treatments Blake Ross, Extension Many areas have water containing impurities from natural or artificial sources. These impurities may

Liskiewicz, Maciej

144

Specialist meeting on leak before break in reactor piping and vessels  

SciTech Connect (OSTI)

A series of research projects sponsored by the Federal Minister for Education, Science, Research and Technology, Bonn are summarized and compared to utility, manufacturer, and vendor tests. The purpose of the evaluation was to experimentally verify Leak-before-Break behavior, confirm the postulation of fracture preclusion for piping (straight pipe, bends and branches), and quantify the safety margin against massive failure. The results are applicable to safety assessment of ferritic and austenitic piping in primary and secondary nuclear power plant circuits. Moreover, because of the wide range of the test parameters, they are also important for the design and assessment of piping in other technical plant. The test results provide justification for ruling out catastrophic fractures, even on pipes of dimensions corresponding to those of a main coolant pipe of a pressurized water reactor plant on the basis of a mechanical deterministic safety analysis in correspondence with the Basis Safety Concept (Principle of Fracture Exclusion).

Bartholome, G.; Bazant, E.; Wellein, R. [Siemens KWU, Stuttgart (Germany)] [and others

1997-04-01T23:59:59.000Z

145

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

146

Drill pipe corrosion control using an inert drilling fluid  

SciTech Connect (OSTI)

The results of a geothermal drill pipe corrosion field test are presented. When a low-density drilling fluid was required for drilling a geothermal well because of an underpressured, fractured formation, two drilling fluids were alternately used to compare drill pipe corrosion rates. The first fluid was an air-water mist with corrosion control chemicals. The other fluid was a nitrogen-water mist without added chemicals. The test was conducted during November 1980 at the Baca Location in northern New Mexico. Data from corrosion rings, corrosion probes, fluid samples and flow line instrumentation are plotted for the ten day test period. It is shown that the inert drilling fluid, nitrogen, reduced corrosion rates by more than an order of magnitude. Test setup and procedures are also discussed. Development of an onsite inert gas generator could reduce the cost of drilling geothermal wells by extending drill pipe life and reducing corrosion control chemical costs.

Caskey, B.C.; Copass, K.S.

1981-01-01T23:59:59.000Z

147

Non-intrusive water utility monitoring and free-space load monitoring  

E-Print Network [OSTI]

This work presents a non-intrusive, single-point sensing scheme to monitor the water usage for various loads on a water utility pipe network through the vibration of a pipe near the water intake source. Experiments with ...

Neuman, Sabrina M

2011-01-01T23:59:59.000Z

148

CX-005514: Categorical Exclusion Determination  

Broader source: Energy.gov [DOE]

2F Evaporator Feed Pump Flush Water Piping Pipe SupportCX(s) Applied: B2.5Date: 02/03/2011Location(s): Aiken, South CarolinaOffice(s): Environmental Management, Savannah River Operations Office

149

Structural Assessment of Small Bore Feeder Piping  

E-Print Network [OSTI]

BACKGROUND Structural Assessment of Small Bore Feeder Piping Kathryn Tang, Janos Mann, Skerdi. 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

150

Page 1 of 1 Pipe School  

E-Print Network [OSTI]

Page 1 of 1 Track A Pipe School© Presented by: Terry McArthur; PE, CDT Senior Professional Registration 8:15 Overview of Different Pipe Materials ­ An overview of different pipe materials and their capabilities and limitations for pressure and gravity applications. 9:00 Rigid and Flexible Pipes: A comparison

Huang, Haiying

151

Hg supply piping simulation Stony Brook University  

E-Print Network [OSTI]

Hg supply piping simulation (No MHD) Stony Brook University Yan Zhan Prof. Foluso Ladeinde July 2nd, 2010 #12;Outline · Hg supply piping in Muon Collider · Turbulence models for bend pipe flow · Problems need studying · Arrangements in the near future #12;Outline · Hg supply piping in Muon Collider ­ Hg

McDonald, Kirk

152

IMPLEMENTATION OF THE PIPE PROCESSOR 1. Introduction  

E-Print Network [OSTI]

IMPLEMENTATION OF THE PIPE PROCESSOR 1. Introduction In the early 1980's a research project, known as the PIPE (Parallel Instruction with Pipe- lined Execution) project, was formed to investigate high to perform a single external memory reference. The PIPE project members decided to define a processor

Farrens, Matthew K.

153

Page 1 of 1 Pipe School  

E-Print Network [OSTI]

­ Rigid and Flexible Pipes: A comparison of rigid (concrete, clay, etc.) and flexible (steel, HDPE, PVC own) 1:00 PM Design and Construction Considerations for PVC Pipe: Everything you need to know about PVC pipe and its applications. John Houle, P.E., Uni-Bell PVC Pipe Association 1:45 Design

Huang, Haiying

154

Heat Transfer -1 Consider a composite pipe of inner diameter 10 cm and outer diameter 10.6 cm subjected to an external  

E-Print Network [OSTI]

Heat Transfer - 1 Consider a composite pipe of inner diameter 10 cm and outer diameter 10.6 cm subjected to an external constant uniform heat flux of 100,000 W/m2 . The composite material of the pipe has/mK in the axial direction. Both ends of the pipe are insulated from any heat loss. The pipe is cooled by water

Virginia Tech

155

Passive ice freezing-releasing heat pipe. [Patent application  

DOE Patents [OSTI]

A heat pipe device has been developed which permits completely passive ice formation and periodic release of ice without requiring the ambient temperature to rise above the melting point of water. This passive design enables the maximum amount of cooling capacity to be stored in the tank.

Gorski, A.J.; Schertz, W.W.

1980-09-29T23:59:59.000Z

156

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

157

Pipe Flow System Holly Guest  

E-Print Network [OSTI]

numbers #12;Pipe Flow System Form #12;Components Form Fitting Loss Coefficient, k Globe valve, fully open 10 Angle valve, fully open 5 Swing check valve, fully open 2.5 Gate valve, fully open .2 Shortradius

Clement, Prabhakar

158

Thirty years of fiberglass pipe in oilfield applications: A historical perspective  

SciTech Connect (OSTI)

Oilfield piping must handle mixtures containing many fluids which are highly corrosive to metals. Salt water, sour crude, hydrogen sulfide and carbon dioxide are only a few of the corrosives which are handled continuously on a large scale in oilfields throughout the world. This paper presents a 30 year history of the use of fiberglass piping systems to manage corrosion problems in oil production piping, and speculates about future uses of fiberglass piping in the oilfields. A description of the problems encountered during the introduction of this type of pipe to the oilfields is given, and the evolution of early oilfield fiberglass piping systems is described. Improvements in fiberglass piping during the period of recent oilfield growth are reported, and the contributions of fiberglass pipe in the field of corrosion control during this period of growth are discussed. A representative list of significant uses of fiberglass pipe in oilfield applications today is presented, predictions about the future of fiberglass tubular products in oilfield corrosion applications are made.

Oswald, K.J. [Smith Fiberglass Products Inc., Little Rock, AR (United States)

1995-10-01T23:59:59.000Z

159

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

1992-01-01T23:59:59.000Z

160

Crimp sealing of tubes flush with or below a fixed surface  

DOE Patents [OSTI]

An apparatus for crimp sealing and severing tubes flush or below a fixed surface. Tube crimping below a fixed surface requires an asymmetric die and anvil configuration. The anvil must be flat so that, after crimping, it may be removed without deforming the crimped tubes. This asymmetric die and anvil is used when a ductile metal tube and valve assembly are attached to a pressure vessel which has a fixed surface around the base of the tube at the pressure vessel. A flat anvil is placed against the tube. Die guides are placed against the tube on a side opposite the anvil. A pinch-off die is inserted into the die guides against the tube. Adequate clearance for inserting the die and anvil around the tube is needed below the fixed surface. The anvil must be flat so that, after crimping, it may be removed without deforming the crimped tubes. 8 figs.

Fischer, J.E.; Walmsley, D.; Wapman, P.D.

1996-08-20T23:59:59.000Z

Note: This page contains sample records for the topic "flush water piping" 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

Superconducting pipes and levitating magnets  

E-Print Network [OSTI]

Motivated by a beautiful demonstration of the Faraday's and Lenz's law in which a small neodymium magnet falls slowly through a conducting non-ferromagnetic tube, we consider the dynamics of a magnet falling through a superconducting pipe. Unlike the case of normal conducting pipes, in which the magnet quickly reaches the terminal velocity, inside a superconducting tube the magnet falls freely. On the other hand, to enter the pipe the magnet must overcome a large electromagnetic energy barrier. For sufficiently strong magnets, the barrier is so large that the magnet will not be able to penetrate it and will be suspended over the front edge. We calculate the work that must done to force the magnet to enter a superconducting tube. The calculations show that superconducting pipes are very efficient at screening magnetic fields. For example, the magnetic field of a dipole at the center of a short pipe of radius $a$ and length $L \\approx a$ decays, in the axial direction, with a characteristic length $\\xi \\approx 0.26 a$. The efficient screening of the magnetic field might be useful for shielding highly sensitive superconducting quantum interference devices, SQUIDs. Finally, the motion of the magnet through a superconducting pipe is compared and contrasted to the flow of ions through a trans-membrane channel.

Yan Levin; Felipe B. Rizzato

2006-09-15T23:59:59.000Z

162

Automated internal pipe cutting device  

DOE Patents [OSTI]

The invention is a remotely controlled internal pipe cutting device primarily used for cutting pipes where the outside of the pipe is inaccessible at the line where the cut is to be made. The device includes an axial ram within a rotational cylinder which is enclosed in a housing. The housing is adapted for attachment to an open end of the pipe and for supporting the ram and cylinder in cantilever fashion within the pipe. A radially movable cutter, preferably a plasma arc torch, is attached to the distal end of the ram. A drive mechanism, containing motors and mechanical hardware for operating the ram and cylinder, is attached to the proximal end of the housing. The ram and cylinder provide for moving the cutter axially and circumferentially, and a cable assembly attached to a remote motor provide for the movement of the cutter radially, within the pipe. The control system can be adjusted and operated remotely to control the position and movement of the cutter to obtain the desired cut. The control system can also provide automatic standoff control for a plasma arc torch.

Godlewski, William J. (Clifton Park, NY); Haffke, Gary S. (Ballston Spa, NY); Purvis, Dale (Amsterdam, NY); Bashar, Ronald W. (Oakdale, CT); Jones, Stewart D. (Mechanicville, NY); Moretti, Jr., Henry (Cranston, RI); Pimentel, James (Warwick, RI)

2003-01-21T23:59:59.000Z

163

An overview of environmental degradation of materials in nuclear power plant piping systems  

SciTech Connect (OSTI)

Piping in light water reactor (LWR) power systems is affected by several types of environmental degradation: intergranular stress corrosion cracking (IGSCC) of austenitic stainless steel piping in boiling water reactors (BWRs) has required research, inspection, and mitigation programs that will ultimately cost several billion dollars; erosion-corrosion of carbon steel piping has been observed frequently in the secondary systems of both BWRs and pressurized water reactors (PWRs); the effect of the BWR environment can greatly diminish the design margin inherent in the ASME Section III fatigue design curves for carbon steel piping; and cast stainless steels are subject to embrittlement after extended thermal aging at reactor operating temperatures. These problems are being addressed by wide-ranging research programs in this country and abroad. The purpose of this review is to highlight some of the accomplishments of these programs and to note some of the remaining unanswered questions.

Shack, W.J.

1987-08-01T23:59:59.000Z

164

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

165

Flexible ultrasonic pipe inspection apparatus  

DOE Patents [OSTI]

A flexible, modular ultrasonic pipe inspection apparatus, comprises 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. 7 figs.

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

1998-06-23T23:59:59.000Z

166

Centrally activated pipe snubbing system  

DOE Patents [OSTI]

An electromechanical pipe snubbing system and an electromechanical pipe snubber. In the system, each pipe snubber, in a set of pipe snubbers, has an electromechanical mechanism to lock and unlock the snubber. A sensor, such as a seismometer, measures a quantity related to making a snubber locking or unlocking decision. A control device makes an electrical connection between a power supply and each snubber's electromechanical mechanism to simultaneously lock each snubber when the sensor measurement indicates a snubber locking condition. The control device breaks the connection to simultaneously unlock each snubber when the sensor measurement indicates a snubber unlocking condition. In the snubber, one end of the shaft slides within a bore in one end of a housing. The other end of the shaft is rotatably attached to a pipe; the other end of the housing is rotatively attached to a wall. The snubber's electromechanical mechanism locks the slidable end of the shaft to the housing and unlocks that end from the housing. The electromechanical mechanism permits remote testing and lockup status indication for each snubber.

Cawley, William E. (Richland, WA)

1985-01-01T23:59:59.000Z

167

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

168

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

169

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...

170

Pressure difference-based sensing of leaks in water distribution networks  

E-Print Network [OSTI]

Human society and civilization rely on the constant availability of fresh water. In regions where a local source of potable water is not available, a transportation and distribution pipe system is employed. When these pipes ...

Kornmayer, Pll Magns

2011-01-01T23:59:59.000Z

171

Geographic Resource Map of Frozen Pipe Probabilities  

Broader source: Energy.gov [DOE]

Presentation slide details a resource map showing the probability of frozen pipes in the geographic United States.

172

Beam Fields and Energy Dissipation Inside the the BE Beam Pipe of the Super-B Detector  

SciTech Connect (OSTI)

We study the bunch field diffusion and energy dissipation in the beam pipe of the Super-B detector, which consists of two coaxial Be thin pipes (half a millimeter). Cooling water will run between these two pipes. Gold and nickel will be sputtered (several microns) onto the beryllium pipe at different sides. The Maxwell equations for the beam fields in these thin layers are solved numerically for the case of infinite pipes. We also calculate the amplitude of the electromagnetic fields outside the beam pipe, which may be noticeable as the beam current can reach 4 A in each beam. Results of simulations are used for the design of this central part of the Super-B detector.

Novokhatski, Alexander; /SLAC; Sullivan, Michael; /SLAC; ,

2010-09-10T23:59:59.000Z

173

Original article Worker piping associated with foraging  

E-Print Network [OSTI]

Original article Worker piping associated with foraging in undisturbed queenright colonies of honey piping, previously reported only in association with colony disturbance or queen- lessness, was seen in undisturbed, queenright colonies. Workers piped by pressing the thorax to the comb, spreading the wings

Paris-Sud XI, Université de

174

Pipe viscometry of foams C. Enzendorfer  

E-Print Network [OSTI]

Pipe viscometry of foams C. Enzendorfer Institute of Drilling and Production, Mining University This paper describes a method for extracting useful information from small-scale pipe viscometer,and quality was determined in pipes of five diameters. The flow curves showed a marked dependenceon

Valkó, Peter

175

Pipe effect in viscous liquids  

E-Print Network [OSTI]

A detailed experimental and theoretical study has been performed about a phenomenon, not previously reported in the literature, occurring in highly viscous liquids: the formation of a definite pipe structure induced by the passage of a heavy body, this structure lasting for quite a long time. A very rich phenomenology (including mechanical, optical and structural effects) associated with the formation of the pipe has been observed in different liquids. Actually, the peculiar dynamical evolution of that structure does not appear as a trivial manifestation of standard relaxation or spurious effects. In particular we have revealed different time scales during the evolution of the pipe and a non-monotonous decreasing of the persistence time with decreasing viscosity (with the appearance of at least two different maxima). A microscopic model consistent with the experimental data, where the pipe behaves as a cylindrical dielectric shell, has been proposed. The general time evolution of the structure has been described in terms of a simple thermodynamical model, predicting several peculiarities effectively observed.

V. Capano; S. Esposito; G. Salesi

2008-12-23T23:59:59.000Z

176

Wynkoop Building Performance Measurement: Water  

SciTech Connect (OSTI)

This report is a summary of the water analysis performance for the Denver, Colorado Wynkoop Building. The Wynkoop Building (Figure 1) was built in 2006 as the Environmental Protection Agency (EPA) Region 8 Headquarters intended to house over 900 occupants in the 301,292 gross square feet (248,849 rentable square feet). The building was built on a brownfield in the Lower Downtown Historic District as part of an urban redevelopment effort. The building was designed and constructed through a public-private partnership with the sustainable design elements developed jointly by General Services Administration (GSA) and EPA. That partnership is still active with all parties still engaged to optimize building operations and use the building as a Learning Laboratory. The building design achieved U.S. Green Building Council Leadership in Energy and Environmental Design for New Construction (LEED-NC) Gold Certification in 2008 (Figure 2) and a 2008 EPA Energy Star Rating of 96 with design highlights that include: (1) Water use was designed to use 40% less than a typical design baseline. The design included low flow fixtures, waterless urinals and dual flush toilets; (2) Native and adaptive vegetation were selected to minimize the need for irrigation water for landscaping; and (3) Energy use intensity was modeled at 66.1 kBtus/gross square foot, which is 39% better than ASHRAE 90.1 1999. The Wynkoop Building water use (10 gallons/square foot) was measured at lower than industry average (15 gallons/square foot) and GSA goals (13 gallons/square foot), however, it was higher than building management expected it would be. The type of occupants and number of occupants can have a significant impact on fixture water use. The occupancy per floor varied significantly over the study time period, which added uncertainty to the data analysis. Investigation of the fixture use on the 2nd, 5th, and 7th floors identified potential for water use reduction if the flush direction of the dual-flush toilet handles was reversed. The building management retrofitted the building's toilets with handles that operated on reduced flush when pushed down (0.8 gallons) and full flush when pulled up (1.1 gallons). The water pressure on the 5th floor (< 30 psi) is less than half the pressure on the 7th floor (>80 psi). The measured water savings post-retrofit was lower on the 5th floor than the 7th floor. The differences in water pressure may have had an impact on the quantity of water used per floor. The second floor water use was examined prior to and following the toilet fixture retrofit. This floor is where conference rooms for non-building occupants are available for use, thus occupancy is highly variable. The 3-day average volume per flush event was higher post-retrofit (0.79 gallons per event), in contrast to pre-retrofit (0.57 gallons per event). There were 40% more flush events post retrofit, which impacted the findings. Water use in the third floor fitness center was also measured for a limited number of days. Because of water line accessibility, only water use on the men's side of the fitness center was measured and from that the total fitness center water use was estimated. Using the limited data collected, the fitness center shower water use is approximately 2% of the whole building water use. Overall water use in the Wynkoop Building is below the industry baseline and GSA expectations. The dual flush fixture replacement appears to have resulted in additional water savings that are expected to show a savings in the total annual water use.

Fowler, Kimberly M.; Kora, Angela R.

2012-08-26T23:59:59.000Z

177

Closure report for underground storage tank 161-R1U1 and its associated underground piping  

SciTech Connect (OSTI)

Underground storage tank (UST) 161-31 R at the Lawrence Livermore National Laboratory (LLNL) was registered with the State Water Resources Control Board on June 27, 1984. UST 161-31R was subsequently renamed UST 161-R1U1 (Fig. A-1, Appendix A). UST 161-R1U1 was installed in 1976, and had a capacity of 383 gallons. This tank system consisted of a fiberglass reinforced plastic tank, approximately 320 feet of polyvinyl chloride (PVC) underground piping from Building 161, and approximately 40 feet of PVC underground piping from Building 160. The underground piping connected laboratory drains and sinks inside Buildings 160 and 161 to UST 161-R1U1. The wastewater collected in UST 161-R1U1, contained organic solvents, metals, inorganic acids, and radionuclides, most of which was produced within Building 161. On June 28, 1989, the UST 161-R1U1 piping system.around the perimeter of Building 161 failed a precision test performed by Gary Peters Enterprises (Appendix B). The 161-R1U1 tank system was removed from service after the precision test. In July 1989, additional hydrostatic tests and helium leak detection tests were performed (Appendix B) to determine the locations of the piping failures in the Building 161 piping system. The locations of the piping system failures are shown in Figure A-2 (Appendix A). On July 11, 1989, LLNL submitted an Unauthorized Release Report to Alameda County Department of Environmental Health (ACDEH), Appendix C.

Mallon, B.J.; Blake, R.G.

1994-05-01T23:59:59.000Z

178

Simultaneous fog formation and thermophoretic droplet deposition in a turbulent pipe flow  

SciTech Connect (OSTI)

Simultaneous aerosol formation by equilibrium condensation and the migration of the resulting droplets to the cold surface by thermophoresis is studied theoretically for a turbulent pipe flow. The problem is one in which a mixture of a vapor and noncondensable gas flows into a section of pipe where the pipe wall is cooled to below the dew point of the vapor. Because the temperature gradient at the pipe wall decays to zero once the gas travels far enough into the pipe, only some fraction of the droplets formed will deposit on the pipe wall. The equations of energy and diffusion suggest that turbulence leads to a discontinuity in the aerosol (fog) concentration at the boundary between the fog and clear regions. Numerical solutions are obtained for CsOH fog formation and deposition in steam flow, a particular case of current practical interest in water reactor safety. The axial and radial variations of the aerosol and vapor concentrations are displayed graphically, as are the location of the fog boundary as a function of axial distance and the efficiency of deposition as a function of the pipe wall temperature.

Epstein, M.; Hauser, G.M. (Fauske and Associates, Inc., Burr Ridge, IL (USA))

1991-02-01T23:59:59.000Z

179

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

180

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

Note: This page contains sample records for the topic "flush water piping" 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

Terahertz inline wall thickness monitoring system for plastic pipe extrusion  

SciTech Connect (OSTI)

Conventional and commercially available inline wall thickness monitoring systems for pipe extrusion are usually based on ultrasonic or x-ray technology. Disadvantages of ultrasonic systems are the usual need of water as a coupling media and the high damping in thick walled or foamed pipes. For x-ray systems special safety requirements have to be taken into account because of the ionizing radiation. The terahertz (THz) technology offers a novel approach to solve these problems. THz waves have many properties which are suitable for the non-destructive testing of plastics. The absorption of electrical isolators is typically very low and the radiation is non-ionizing in comparison to x-rays. Through the electromagnetic origin of the THz waves they can be used for contact free measurements. Foams show a much lower absorption in contrast to acoustic waves. The developed system uses THz pulses which are generated by stimulating photoconductive switches with femtosecond laser pulses. The time of flight of THz pulses can be determined with a resolution in the magnitude of several ten femtoseconds. Hence the thickness of an object like plastic pipes can be determined with a high accuracy by measuring the time delay between two reflections on materials interfaces e.g. at the pipe's inner and outer surface, similar to the ultrasonic technique. Knowing the refractive index of the sample the absolute layer thickness from the transit time difference can be calculated easily. This method in principle also allows the measurement of multilayer systems and the characterization of foamed pipes.

Hauck, J., E-mail: j.hauck@skz.de, E-mail: d.stich@skz.de, E-mail: p.heidemeyer@skz.de, E-mail: m.bastian@skz.de, E-mail: t.hochrein@skz.de; Stich, D., E-mail: j.hauck@skz.de, E-mail: d.stich@skz.de, E-mail: p.heidemeyer@skz.de, E-mail: m.bastian@skz.de, E-mail: t.hochrein@skz.de; Heidemeyer, P., E-mail: j.hauck@skz.de, E-mail: d.stich@skz.de, E-mail: p.heidemeyer@skz.de, E-mail: m.bastian@skz.de, E-mail: t.hochrein@skz.de; Bastian, M., E-mail: j.hauck@skz.de, E-mail: d.stich@skz.de, E-mail: p.heidemeyer@skz.de, E-mail: m.bastian@skz.de, E-mail: t.hochrein@skz.de; Hochrein, T., E-mail: j.hauck@skz.de, E-mail: d.stich@skz.de, E-mail: p.heidemeyer@skz.de, E-mail: m.bastian@skz.de, E-mail: t.hochrein@skz.de [SKZ - German Plastics Center, Wuerzburg (Germany)

2014-05-15T23:59:59.000Z

182

Update: pipes of different half bend angles Feb. 21, 2013  

E-Print Network [OSTI]

Update: pipes of different half bend angles Feb. 21, 2013 Yan Zhan 1 #12;Outline · Mercury Supply Pipe · Re-mesh for Pipes without weld of different half bend angles · Turbulence Intensity At Pipe Exits · Discussion on Bend Effects and Nozzle Effects 2 #12;Mercury Supply Pipe 3 Item 2 Item 3 Whole

McDonald, Kirk

183

Onsite Wastewater Treatment Systems: Graywater Use and Water Quality  

E-Print Network [OSTI]

their homes in their landscapes. This reuse of graywater can reduce the amount of wastewater entering sewers or treatment systems, reduce the amount of fresh water used on landscapes and help preserve limited fresh water supplies. Onsite wastewater...-washing machines ? The code excludes water that has washed materials soiled with human waste, such as diapers, and water that has been in contact with toilet waste. This water, known as blackwater, includes flush water from toilets and urinals and wastewater...

Lesikar, Bruce J.; Mechell, Justin; Alexander, Rachel

2008-08-28T23:59:59.000Z

184

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

185

Piping inspection carriage having axially displaceable sensor  

DOE Patents [OSTI]

A pipe inspection instrument carriage is described 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. 4 figures.

Zollinger, W.T.; Treanor, R.C.

1994-12-06T23:59:59.000Z

186

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

187

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

188

Alkali Metal Heat Pipe Life Issues  

SciTech Connect (OSTI)

One approach to fission power system design uses alkali metal heat pipes for the core primary heat-transfer system. Heat pipes may also be used as radiator elements or auxiliary thermal control elements. This synopsis characterizes long-life core heat pipes. References are included where information that is more detailed can be found. Specifics shown here are for demonstration purposes and do not necessarily reflect current Nasa Project Prometheus point designs. (author)

Reid, Robert S. [Marshall Space Flight Center, National Aeronautics and Space Administration, Huntsville, Alabama, 35812 (United States)

2004-07-01T23:59:59.000Z

189

A HYDROGEN IGNITION MECHANISM FOR EXPLOSIONS IN NUCLEAR FACILITY PIPING SYSTEMS  

SciTech Connect (OSTI)

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. 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 may occur. Pipe ruptures in nuclear reactor cooling systems were attributed to hydrogen explosions inside pipelines, i.e., Hamaoka, Nuclear Power Station in Japan, and Brunsbuettel in Germany. Prior to these accidents, an ignition source for hydrogen was not clearly demonstrated, but these accidents demonstrated that a mechanism was, in fact, available to initiate combustion and explosion. A new theory to identify an ignition source and explosion cause is presented here, and further research is recommended to fully understand this explosion mechanism.

Leishear, R.

2013-03-28T23:59:59.000Z

190

DEVELOPMENT AND MANUFACTURE OF COST EFFECTIVE COMPOSITE DRILL PIPE  

SciTech Connect (OSTI)

This technical report presents the engineering research and data accomplishments that have transpired to date in support of the development of Cost Effective Composite Drill Pipe (CDP). The report presents accomplishments made from October 1, 2002 through September 30, 2003. The following have been accomplished and are reported in detail herein: Metal-to-Composite Interface (MCI) redesign and testing; Successful demonstration of MCI connection for both SR and ER/DW CDP; Specifications for a 127mm (5 inch) ID by 152.4 mm (6 inch) OD composite drill pipe have been finalized for Extended Reach/Deep Water applications (ER/DW); Field testing of Short Radius CDP (SR); Sealing composite laminate to contain high pressure; Amendments; Amendment for ''Smart'' feature added to ER/DW development along with time and funding to complete battery of qualification tests with option for field demonstration; and Preparation of papers for publication and conference presentations.

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

2003-03-30T23:59:59.000Z

191

Method for extending the useful shelf-life of refrigerated red blood cells by flushing with inert gas  

DOE Patents [OSTI]

Method using oxygen removal for extending the useful shelf-life of refrigerated red blood cells. A cost-effective, 4.degree. C. storage procedure that preserves red cell quality and prolongs post-transfusion in vivo survival is described. Preservation of adenosine triphosphate levels and reduction in hemolysis and in membrane vesicle production of red blood cells stored at 4.degree. C. for prolonged periods of time is achieved by removing oxygen therefrom at the time of storage; in particular, by flushing with an inert gas. Adenosine triphosphate levels of the stored red blood cells are boosted in some samples by addition of ammonium phosphate.

Bitensky, Mark W. (Los Alamos, NM); Yoshida, Tatsuro (Los Alamos, NM)

1997-01-01T23:59:59.000Z

192

Method for extending the useful shelf-life of refrigerated red blood cells by flushing with inert gas  

DOE Patents [OSTI]

A method is disclosed using oxygen removal for extending the useful shelf-life of refrigerated red blood cells. A cost-effective, 4 C storage procedure that preserves red cell quality and prolongs post-transfusion in vivo survival is described. Preservation of adenosine triphosphate levels and reduction in hemolysis and in membrane vesicle production of red blood cells stored at 4 C for prolonged periods of time is achieved by removing oxygen from the red blood cells at the time of storage; in particular, by flushing with an inert gas. Adenosine triphosphate levels of the stored red blood cells are boosted in some samples by addition of ammonium phosphate. 4 figs.

Bitensky, M.W.; Yoshida, Tatsuro

1997-04-29T23:59:59.000Z

193

DESCRIPTION OF THE THREEMILEROAD BRECCIA PIPE The breccia pipe is a 40-50 meter wide vertical pipe-shaped deposit that exhibits a sharp vertical contact  

E-Print Network [OSTI]

#12;DESCRIPTION OF THE THREEMILEROAD BRECCIA PIPE The breccia pipe is a 40-50 meter wide vertical pipe-shaped deposit that exhibits a sharp vertical contact with the host dolostoneand cuts all the stratigraphic levels exposed in the quarry (Fig. 2). The breccia pipe is located along a fracturezone that runs

Luczaj, John A.

194

Chevron Richmond Refinery Pipe Rupture and Fire Animation - Work...  

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

Chevron Richmond Refinery Pipe Rupture and Fire Animation - Work Planning and Control is Not Chevron Richmond Refinery Pipe Rupture and Fire Animation - Work Planning and Control...

195

Probabilistic evaluation of main coolant pipe break indirectly induced by earthquakes: Savannah River Project L and P Reactors  

SciTech Connect (OSTI)

A probabilistic evaluation of seismically-induced indirect pipe break for the Savannah River Project (SRP) L- and P-Reactor main coolant (process water) piping has been conducted. Seismically-induced indirect pipe break can result primarily from: (1) failure of the anchorage of one or more of the components to which the pipe is anchored; or (2) failure of the pipe due to collapse of the structure. The potential for both types of seismically-induced indirect failures was identified during a seismic walkdown of the main coolant piping. This work involved: (1) identifying components or structures whose failure could result in pipe failure; (2) developing seismic capacities or fragilities of these components; (3) combining component fragilities to develop plant damage state fragilities; and (4) convolving the plant seismic fragilities with a probabilistic seismic hazard estimate for the site in order to obtain estimates of seismic risk in terms of annual probability of seismic-induced indirect pipe break. 6 refs., 5 figs., 2 tabs.

Short, S.A.; Wesley, D.A.; Awadalla, N.G.; Kennedy, R.P. (Impell Corp., Mission Viejo, CA (USA); Westinghouse Savannah River Co., Aiken, SC (USA); Structural Mechanics Consulting, Inc., Yorba Linda, CA (USA))

1989-01-01T23:59:59.000Z

196

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.

Adkins, Douglas Ray (Albuquerque, NM); Shen, David S. (Albuquerque, NM); Tuck, Melanie R. (Albuquerque, NM); Palmer, David W. (Albuquerque, NM); Grafe, V. Gerald (Corrales, NM)

1998-01-01T23:59:59.000Z

197

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.

Adkins, Douglas Ray (Albuquerque, NM); Shen, David S. (Albuquerque, NM); Tuck, Melanie R. (Albuquerque, NM); Palmer, David W. (Albuquerque, NM); Grafe, V. Gerald (Corrales, NM)

1999-01-01T23:59:59.000Z

198

Measuring overall emittance of concentrator receiver pipes  

SciTech Connect (OSTI)

A simple and accurate method for measuring the overall emittance of receiver pipes used with cylindrical concentrators is described. Experimental measurements obtained for steel pipes with a black chrome over nickel selective surface are presented. The observed strong temperature dependence of emittance indicates that the use of room temperature emittance data will substantially overestimate collector efficiency. (SPH)

Gerich, J.W.; Reitter, T.A.; Merriam, M.F.

1980-03-01T23:59:59.000Z

199

Geothermal drill pipe corrosion test plan  

SciTech Connect (OSTI)

Plans are presented for conducting a field test of drill pipe corrosion, comparing air and nitrogen as drilling fluids. This test will provide data for evaluating the potential of reducing geothermal well drilling costs by extending drill pipe life and reducing corrosion control costs. The 10-day test will take place during fall 1980 at the Baca Location in Sandoval County, New Mexico.

Caskey, B.C.; Copass, K.S.

1980-12-01T23:59:59.000Z

200

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

Note: This page contains sample records for the topic "flush water piping" 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

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

202

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

203

IPIRG programs - advances in pipe fracture technology  

SciTech Connect (OSTI)

This paper presents an overview of the advances made in fracture control technology as a result of the research performed in the International Piping Integrity Research Group (IPIRG) program. The findings from numerous experiments and supporting analyses conducted to investigate the behavior of circumferentially flawed piping and pipe systems subjected to high-rate loading typical of seismic events are summarized. Topics to be discussed include; (1) Seismic loading effects on material properties, (2) Piping system behavior under seismic loads, (3) Advances in elbow fracture evaluations, and (4) {open_quotes}Real{close_quotes} piping system response. The presentation for each topic will be illustrated with data and analytical results. In each case, the state-of-the-art in fracture mechanics prior to the first IPIRG program will be contrasted with the state-of-the-art at the completion of the IPIRG-2 program.

Wilkowski, G.; Olson, R.; Scott, P. [Batelle, Columbus, OH (United States)

1997-04-01T23:59:59.000Z

204

Task force reduces stuck-pipe costs  

SciTech Connect (OSTI)

A task-force approach to stuck pipe has produced more than a 70% reduction in BP Exploration Operating Co.'s worldwide stuck-pipe costs during 1989 and 1990. We believe that these results have been primarily due to focusing our attention on improving personnel performance rather than to the introduction of new technology. Key elements in this paper of the efforts involved: Recognizing the importance of the drilling contractor and the service company staff's role in helping control stuck pipe; Promoting a rig-team approach to tackling the problem; Providing training on rig-team, stuck-pipe problem solving; and raising awareness of stuck pipe through a coordinated worldwide communications program among BP, contractors, and service companies.

Bradley, W.B. (BP Research, Houston, TX (US)); Jarman, D. (BP Exploration Operation Co., Aberdeen (GB)); Auflick, R.A.; Plott, R.S. (BP Exploration Operating Co., Houston, TX (US)); Wood, R.D. (BP Exploration Operating Co., London (GB)); Schofield, T.R. (BP Exploration Operating Co., Beijing (CN)); Cocking, D. (BP Exploration Operating Co., Ho Chi Minh City (CN))

1991-05-27T23:59:59.000Z

205

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

206

Residual stresses and stress corrosion cracking in pipe fittings  

SciTech Connect (OSTI)

Residual stresses can play a key role in the SCC performance of susceptible materials in PWR primary water applications. Residual stresses are stresses stored within the metal that develop during deformation and persist in the absence of external forces or temperature gradients. Sources of residual stresses in pipe fittings include fabrication processes, installation and welding. There are a number of methods to characterize the magnitude and orientation of residual stresses. These include numerical analysis, chemical cracking tests, and measurement (e.g., X-ray diffraction, neutron diffraction, strain gage/hole drilling, strain gage/trepanning, strain gage/section and layer removal, and acoustics). This paper presents 400 C steam SCC test results demonstrating that residual stresses in as-fabricated Alloy 600 pipe fittings are sufficient to induce SCC. Residual stresses present in as-fabricated pipe fittings are characterized by chemical cracking tests (stainless steel fittings tested in boiling magnesium chloride solution) and by the sectioning and layer removal (SLR) technique.

Parrington, R.J.; Scott, J.J.; Torres, F.

1994-06-01T23:59:59.000Z

207

DOE ZERH Webinar: Efficient Hot Water Distribution I: What's...  

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

water plumbing systems including the key performance metrics to understand, and how piping, pumps, and fixtures come together to create a good (or bad) system. View the...

208

Test Report for Low Water Consumption Stainless Steel Water Closet Toilets  

E-Print Network [OSTI]

requirements as specified in the ASME Standard and is intended for use in new prison facilities. This toilet passed all performance criteria stated in the ASME Standard when operating with the 1.6 gallon flush valve at a static water pressure of 35 psi. However...

Claridge, D. E.; Boecker, C. L.

1994-01-01T23:59:59.000Z

209

Use of an inert drilling fluid to control geothermal drill pipe corrosion  

SciTech Connect (OSTI)

The results of a geothermal drill pipe corrosion field test are presented. When a low-density drilling fluid was required for drilling a geothermal well because of an underpressured, fractured formation, two drilling fluids were alternatively used to compare drill pipe corrosion rates. The first fluid was an air-water mist with corrosion control chemicals. The other fluid was a nitrogen-water mist without added chemicals. The test was conducted during November 1980 at the Baca Location in northern New Mexico, USA. Data from corrosion rings, corrosion probes, fluid samples, and flow line instrumentation are plotted for the ten day test period. It is shown that the inert drilling fluid (nitrogen) reduced corrosion rates by more than an order of magnitude. Test setup and procedures are also discussed. Development of an on-site inert gas generator could reduce the cost of drilling geothermal wells by extending drill pipe life and reducing corrosion control chemical costs.

Caskey, B.C.

1981-04-01T23:59:59.000Z

210

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

211

LOW-FREQUENCY PHASED-ARRAY METHODS FOR CRACK DETECTION IN CAST AUSTENITIC PIPING COMPONENTS  

SciTech Connect (OSTI)

Studies at the Pacific Northwest National Laboratory (PNNL) in Richland, Washington, are being conducted to evaluate nondestructive examination (NDE) approaches for inspecting coarse-grained, austenitic stainless steel reactor components. The work provides information to the United States Nuclear Regulatory Commission (NRC) on the utility, effectiveness, limitations, and reliability of advanced inspection techniques for application on safety-related components in commercial nuclear power plants. This paper describes results from recent assessments using a low-frequency phased-array methodology for detecting cracks in cast austenitic piping welds. Piping specimens that contain thermal and mechanical fatigue cracks located adjacent to welds were examined. The specimens have surface geometrical conditions and weld features that simulate portions of primary piping systems in many U.S. pressurized water reactors (PWRs). In addition, segments of vintage centrifugally cast piping were examined to assess inherent acoustic noise and scattering due to grain structures and determine consistency of ultrasonic (UT) responses from varied circumferential locations. The phased-array UT methods were applied from the outside surface of the specimens using automated scanning devices and water coupling, and employed a modified instrument operating between 500 kHz and 1.0 MHz. Composite volumetric images of the specimens were generated. Results from laboratory studies for assessing crack detection and sizing effectiveness are discussed, including acoustic parameters observed in centrifugally cast piping base materials.

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

2008-01-01T23:59:59.000Z

212

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

213

The dynamics of mercury flow in a curved pipe  

E-Print Network [OSTI]

The dynamics of mercury flow in a curved pipe Yan Zhan Foluso LadeindeFoluso Ladeinde 11 of the problem Pi t ff t· Pipe curvature effect · Laminar flow in the mercury supply pipe l i· Conclusion #12 Project. · Target delivery systems involves pipe curvature, axially- d d t di l di t d l l th tdependent

McDonald, Kirk

214

Draft December 6, 2003 OCCURRENCE OF DISSOLUTION PIPES  

E-Print Network [OSTI]

Draft December 6, 2003 OCCURRENCE OF DISSOLUTION PIPES THROUGH INDURATED CALCIC HORIZONS Graciela regions worldwide, dissolution pipes have been observed in indurated calcic horizons. Pipes are defined over- and underlaying it. Since pipes are hidden subsurface soil features little is known about them

Borchers, Brian

215

WLDF 311 Treefrog Study; Fall 2007 PVC Pipe Deployment Protocol  

E-Print Network [OSTI]

WLDF 311 Treefrog Study; Fall 2007 PVC Pipe Deployment Protocol: 1. Arrange time to meet should include: a. 12 pipes with caps (there should be ~3 pipes on "your" transects out in the field & place trap on the stake (using hole near top of pipe for screw head). e. Record UTM positions (easting

Johnson, Matthew

216

Experimental and theoretical progress in pipe flow transition  

E-Print Network [OSTI]

Experimental and theoretical progress in pipe flow transition BY A. P. WILLIS 1 , J. PEIXINHO 2 , R Reynolds' famous experiments on the transition to turbulence in a pipe, and yet the pipe problem remains discovered families of unstable travelling wave solutions to transitional and turbulent pipe flow. Keywords

Willis, Ashley

217

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

218

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

219

Industrial Waste Heat Recovery Using Heat Pipes  

E-Print Network [OSTI]

For almost a decade now, heat pipes with secondary finned surfaces have been utilized in counter flow heat exchangers to recover sensible energy from industrial exhaust gases. Over 3,000 such heat exchangers are now in service, recovering...

Ruch, M. A.

1981-01-01T23:59:59.000Z

220

Reliability Estimation for Double Containment Piping  

SciTech Connect (OSTI)

Double walled or double containment piping is considered for use in the ITER international project and other next-generation fusion device designs to provide an extra barrier for tritium gas and other radioactive materials. The extra barrier improves confinement of these materials and enhances safety of the facility. This paper describes some of the design challenges in designing double containment piping systems. There is also a brief review of a few operating experiences of double walled piping used with hazardous chemicals in different industries. This paper recommends approaches for the reliability analyst to use to quantify leakage from a double containment piping system in conceptual and more advanced designs. The paper also cites quantitative data that can be used to support such reliability analyses.

L. Cadwallader; T. Pinna

2012-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "flush water piping" 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

Heat pipe dehumidification for supermarket energy savings  

E-Print Network [OSTI]

This thesis examines the possibility of using a heat pipe installed in the air conditioning unit of a supermarket to increase the level of dehumidification of the inside air. This dehumidification is expected to reduce the ...

Oliver, Eric M. (Eric Michael)

1994-01-01T23:59:59.000Z

222

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

223

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

224

DEVELOPMENT OF TECHNOLOGY TO REMOTELY NAVIGATE VERTICAL PIPE ARRAYS  

SciTech Connect (OSTI)

Situations exist around the Savannah River Site (SRS) and the Department of Energy (DOE) complex where it is advantageous to remotely navigate vertical pipe arrays. Specific examples are waste tanks in the SRS Tank Farms, which contain horizontal cooling coils at the tank bottom, vertical cooling coils throughout and a limited number of access points or ''risers''. These factors limit accessibility to many parts of these tanks by conventional means. Pipe Traveler technology has been developed to address these issues. The Pipe Traveler addresses these issues by using the vertical cooling coils as its medium of travel. The unit operates by grabbing a pipe using dual grippers located on either side of the equipment. Once securely attached to the pipe a drive wheel is extended to come in contact with the pipe. Rotation of the drive wheel causes the unit to rotate around the pipe. This action is continued until the second set of grippers is aligned with the next pipe. Extension pistons are actuated to extend the second set of grippers in contact with a second pipe. The second set of grippers is then actuated to grasp the pipe. The first set of grippers releases the original pipe and the process is repeated until the unit reaches its desired location. Once at the tool deployment location the desired tool may be used. The current design has proven the concept of pipe-to-pipe navigation. Testing of the Pipe Traveler has proven its ability to transfer itself from one pipe to another.

Krementz, D.; Immel, D.; Vrettos, N.; Nance, T.; Marzolf, A.

2011-07-01T23:59:59.000Z

225

Flow conditions of fresh mortar and concrete in different pipes  

SciTech Connect (OSTI)

The variation in fresh concrete flow rate over the pipe cross section was investigated on differently coloured and highly flowable concrete mixes flowing through pipes of different materials (rubber, steel, acryl). First, uncoloured (gray) concrete was poured through the pipe and the pipe blocked. Similar but coloured (black) concrete was then poured into the pipe filled with gray concrete, flowing after the gray concrete for a while before being blocked and hardened. The advance of the colouring along the pipe wall (showing boundary flow rate) was observed on the moulded concrete surface appearing after removing the pipe from the hardened concrete. The shapes of the interfaces between uncoloured and coloured concrete (showing variation of flow rate over the pipe cross section) were observed on sawn surfaces of concrete half cylinders cut along the length axes of the concrete-filled pipe. Flow profiles over the pipe cross section were clearly seen with maximum flow rates near the centre of the pipe and low flow rate at the pipe wall (typically rubber pipe with reference concrete without silica fume and/or stabilizers). More plug-shaped profiles, with long slip layers and less variation of flow rate over the cross section, were also seen (typically in smooth acrylic pipes). Flow rate, amount of concrete sticking to the wall after flow and SEM-images of pipe surface roughness were observed, illustrating the problem of testing full scale pumping.

Jacobsen, Stefan, E-mail: stefan.jacobsen@ntnu.n [Norwegian University of Science and Technology, Dept of Structural Engineering, Trondheim (Norway); Haugan, Lars; Hammer, Tor Arne [SINTEF Byggforsk AS Building and Infrastructure, Trondheim (Norway); Kalogiannidis, Evangelos [Norwegian University of Science and Technology, Dept of Structural Engineering, Trondheim (Norway)

2009-11-15T23:59:59.000Z

226

A study of the minimum meniscus radius as a function of vapor temperature using heat pipes  

E-Print Network [OSTI]

/sec 2 latent heat of vaporization, BTU/lb m wick permeability, ft 2 length, ft molecular weight, ibm water parameter, hf pfof/uf fgff f pressure, lbf/ft 2 desorption pressure, lbf/ft 2 saturation pressure, lbf/ft 2 heat transfer rate, BTU... into Cosgrove's equation, assuming the temperature is uni- form inside the heat pipe, replacing the sum of the section lengths by the total length of the heat pipe, and combining the fluid prop- erties into one var1able there is obtained N = hf pfof/uf...

Sonnier, Ronald James

1973-01-01T23:59:59.000Z

227

A new probe for corrosion monitoring of stainless steel piping systems  

SciTech Connect (OSTI)

This paper presents theoretical background and development of a probe for corrosion monitoring of process- and piping systems made of stainless steels. The probe will be installed in two piping systems on the Draugen platform in the North Sea. One installation is for monitoring of a produced water systems made of duplex stainless steel (UNS S31803), and one for monitoring in a seawater system made of high-alloy austenitic stainless steel of the 6 Mo type (UNS S31254). Equipment for logging and storing data is also described.

Valen, S.; Johnsen, R.; Gartland, P.O. [CorrOcean as, Trondheim (Norway); Hollen, I.H. [AS Norske Shell, Kristiansund (Norway)

1995-12-01T23:59:59.000Z

228

Analysis of a piping system for requalification  

SciTech Connect (OSTI)

This paper discusses the global stress analysis required for the seismic/structural requalification of a reactor secondary piping system in which minor defects (flaws) were discovered during a detailed inspection. The flaws in question consisted of weld imperfections. Specifically, it was necessary to establish that the stresses at the flawed sections did not exceed the allowables and that the fatigue life remained within acceptable limits. At the same time the piping system had to be qualified for higher earthquake loads than those used in the original design. To accomplish these objectives the nominal stress distributions in the piping system under the various loads (dead load, thermal load, wind load and seismic load) were determined. First a best estimate finite element model was developed and calculations were performed using the piping analysis modules of the ANSYS Computer Code. Parameter studies were then performed to assess the effect of physically reasonable variations in material, structural, and boundary condition characteristics. The nominal stresses and forces so determined, provided input for more detailed analyses of the flawed sections. Based on the reevaluation, the piping flaws were judged to be benign, i.e., the piping safety margins were acceptable inspite of the increased seismic demand. 13 refs.

Hsieh, B.J.; Tang, Yu.

1992-01-01T23:59:59.000Z

229

Analysis of a piping system for requalification  

SciTech Connect (OSTI)

This paper discusses the global stress analysis required for the seismic/structural requalification of a reactor secondary piping system in which minor defects (flaws) were discovered during a detailed inspection. The flaws in question consisted of weld imperfections. Specifically, it was necessary to establish that the stresses at the flawed sections did not exceed the allowables and that the fatigue life remained within acceptable limits. At the same time the piping system had to be qualified for higher earthquake loads than those used in the original design. To accomplish these objectives the nominal stress distributions in the piping system under the various loads (dead load, thermal load, wind load and seismic load) were determined. First a best estimate finite element model was developed and calculations were performed using the piping analysis modules of the ANSYS Computer Code. Parameter studies were then performed to assess the effect of physically reasonable variations in material, structural, and boundary condition characteristics. The nominal stresses and forces so determined, provided input for more detailed analyses of the flawed sections. Based on the reevaluation, the piping flaws were judged to be benign, i.e., the piping safety margins were acceptable inspite of the increased seismic demand. 13 refs.

Hsieh, B.J.; Tang, Yu

1992-05-01T23:59:59.000Z

230

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

231

Cesium heat-pipe thermostat  

SciTech Connect (OSTI)

In this paper the authors report a newly developed Cesium Heat-Pipe Thermostat (Cs HPT) with the operation range of 400 C to 800 C. The working medium is cesium (Cs) of 99.98% purity and contains no radioisotope. A Cs filing device is developed which can prevent Cs being in contact with air. The structural material is stainless steel. A 5000 h test has been made to confirm the compatibility between cesium and stainless steel. The Cs HPT has several thermometer wells of 220mm depth with different diameters for different sizes of thermometers. The temperature uniformity of the Cs HPT is 0.06 C to 0.20 C. A precise temperature controller is used to ensure the temperature fluctuation within 0.03 C. The size of Cs HPT is 380mm320mm280mm with foot wheels for easy moving. The thermostat has been successfully used for the calibration of industrial platinum resistance thermometers and thermocouples.

Wu, F.; Song, D.; Sheng, K.; Wu, J. [Changcheng Institute of Metrology and Measurement, 100095, Beijing (China)] [Changcheng Institute of Metrology and Measurement, 100095, Beijing (China); Yi, X. [China National South Aviation industry CO., LTD., 412002, Hunan (China)] [China National South Aviation industry CO., LTD., 412002, Hunan (China); Yu, Z. [Dalian Jinzhou Institute of Measurement and Testing, 116100, Liaoning (China)] [Dalian Jinzhou Institute of Measurement and Testing, 116100, Liaoning (China)

2013-09-11T23:59:59.000Z

232

Apparatus and method for detecting leaks in piping  

DOE Patents [OSTI]

A method and device are disclosed for detecting the location of leaks along a wall or piping system, preferably in double-walled piping. The apparatus comprises a sniffer probe, a rigid cord such as a length of tube attached to the probe on one end and extending out of the piping with the other end, a source of pressurized air and a source of helium. The method comprises guiding the sniffer probe into the inner pipe to its distal end, purging the inner pipe with pressurized air, filling the annulus defined between the inner and outer pipe with helium, and then detecting the presence of helium within the inner pipe with the probe as is pulled back through the inner pipe. The length of the tube at the point where a leak is detected determines the location of the leak in the pipe. 2 figures.

Trapp, D.J.

1994-12-27T23:59:59.000Z

233

Apparatus and method for detecting leaks in piping  

DOE Patents [OSTI]

A method and device for detecting the location of leaks along a wall or piping system, preferably in double-walled piping. The apparatus comprises a sniffer probe, a rigid cord such as a length of tube attached to the probe on one end and extending out of the piping with the other end, a source of pressurized air and a source of helium. The method comprises guiding the sniffer probe into the inner pipe to its distal end, purging the inner pipe with pressurized air, filling the annulus defined between the inner and outer pipe with helium, and then detecting the presence of helium within the inner pipe with the probe as is pulled back through the inner pipe. The length of the tube at the point where a leak is detected determines the location of the leak in the pipe.

Trapp, Donald J. (Aiken, SC)

1994-01-01T23:59:59.000Z

234

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

235

Nathan Bryant Clean drinking water is a major concern throughout the world. In  

E-Print Network [OSTI]

the bacteria, but it is time consuming and requires thermal energy. Ceramic filters are a cost effective way the water through the ceramic. This pumping also provides a back-flush of purified water to self ­ $8 #12;Ceramic filters in Cambodia http://www.youtube.com/watch?v=lPvHtj RvWFM #12;High-tech Ceramic

Mukhopadhyay, Sharmila M.

236

Corrugated Pipe as a Beam Dechirper  

SciTech Connect (OSTI)

We have studied the use of a metallic pipe with small corrugations for the purpose of passively dechirping, through its wakefield, a short, intense electron bunch. The corrugated pipe is attractive for this purpose because its wake: (i) has near maximal possible amplitude for a given aperture and (ii) has a relatively large oscillation wave length, even when the aperture is small. We showed how the corrugated structure can satisfy dechirping requirements encountered in the NGLS project at LBNL. We found that a linear chirp of -40 MeV/mm can be induced by an NGLS-like beam, by having it pass through a corrugated, metallic pipe of radius 3 mm, length 8.2 m, and corrugation parameters full depth 450 {mu}m and period 1000 {mu}m. This structure is about 15 times as effective in the role of dechirper as an S-band accelerator structure used passively.

Bane, K.L.F.; Stupakov, G.; /SLAC

2012-04-20T23:59:59.000Z

237

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

238

Report of the US Nuclear Regulatory Commission Piping Review Committee. Volume 4. Evaluation of other loads and load combinations  

SciTech Connect (OSTI)

Six topical areas were covered by the Task Group on Other Dynamic Loads and Load Combinations as described below: Event Combinations - dealing with the potential simultaneous occurrence of earthquakes, pipe ruptures, and water hammer events in the piping design basis; Response Combinations - dealing with multiply supported piping with independent inputs, the sequence of combinations between spacial and modal components of response, and the treatment of high frequency modes in combination with low frequency modal responses; Stress Limits/Dynamic Allowables - dealing with inelastic allowables for piping and strain rate effects; Water Hammer Loadings - dealing with code and design specifications for these loadings and procedures for identifying potential water hammer that could affect safety; Relief Valve Opening and Closing Loads - dealing with the adequacy of analytical tools for predicting the effects of these events and, in addition, with estimating effective cycles for fatigue evaluations; and Piping Vibration Loads - dealing with evaluation procedures for estimating other than seismic vibratory loads, the need to consider reciprocating and rotary equipment vibratory loads, and high frequency vibratory loads. NRC staff recommendations or regulatory changes and additional study appear in this report.

Not Available

1984-12-01T23:59:59.000Z

239

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

240

aggregated internet pipe: Topics by E-print Network  

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

A&M University - TxSpace Summary: PIPE INSULATION ECONOMIES Robert E. Schilling, P.E. Eaton Corporation Aurora, Ohio ABSTRACT Pipe Insulation Economies is a computer pro gram...

Note: This page contains sample records for the topic "flush water piping" 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

austenitic pipe welds: Topics by E-print Network  

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

A&M University - TxSpace Summary: PIPE INSULATION ECONOMIES Robert E. Schilling, P.E. Eaton Corporation Aurora, Ohio ABSTRACT Pipe Insulation Economies is a computer pro gram...

242

austenitic pipe weldings: Topics by E-print Network  

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

A&M University - TxSpace Summary: PIPE INSULATION ECONOMIES Robert E. Schilling, P.E. Eaton Corporation Aurora, Ohio ABSTRACT Pipe Insulation Economies is a computer pro gram...

243

austenitic piping components: Topics by E-print Network  

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

A&M University - TxSpace Summary: PIPE INSULATION ECONOMIES Robert E. Schilling, P.E. Eaton Corporation Aurora, Ohio ABSTRACT Pipe Insulation Economies is a computer pro gram...

244

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

245

Simplifying the complexity of pipe flow  

E-Print Network [OSTI]

Transitional pipe flow is modeled as a one-dimensional excitable and bistable medium. Models are presented in two variables, turbulence intensity and mean shear, that evolve according to established properties of transitional turbulence. A continuous model captures the essence of the puff-slug transition as a change from excitability to bistability. A discrete model, that additionally incorporates turbulence locally as a chaotic repeller, reproduces almost all large-scale features of transitional pipe flow. In particular it captures metastable localized puffs, puff splitting, slugs, a continuous transition to sustained turbulence via spatiotemporal intermittency (directed percolation), and a subsequent increase in turbulence fraction towards uniform, featureless turbulence.

Dwight Barkley

2011-05-19T23:59:59.000Z

246

High performance phenolic piping for oilfield applications  

SciTech Connect (OSTI)

The performance advantages of phenolic resins have been enticing for composites manufacturers and users for many years. The use of these materials has been limited, however, by the process, handling and assembly difficulties they present. This paper introduces an innovative modification which has allowed the development of a filament wound piping system for oilfield applications which previously had been beyond the performance envelope of fiberglass pipe. Improvement in temperature resistance and response to steam exposure, as compared to conventional epoxy products, are of particular benefit. Fabrication innovations are also included which can be used where impact resistance or fire performance are needed.

Folkers, J.L. [Ameron International, Burkburnett, TX (United States); Friedrich, R.S.; Fortune, M. [Ameron International, South Gate, CA (United States)

1997-08-01T23:59:59.000Z

247

GLOBAL OPTIMIZATION OF PIPE NETWORKS BY THE INTERVAL ...  

E-Print Network [OSTI]

GLOBAL OPTIMIZATION OF PIPE NETWORKS. BY THE INTERVAL ANALYSIS APPROACH: THE BELGIUM NETWORK CASE. J. FRDRIC BONNANS...

2011-11-20T23:59:59.000Z

248

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

249

Pipe Lining and Renewal School Monday, January 26, 2015  

E-Print Network [OSTI]

Track F Pipe Lining and Renewal School Monday, January 26, 2015 Hilton Americas, Houston, Texas with their applications, capabilities and limitations. Includes pipe assessment and inspection requirements for selecting and inspection of pipe lining and renewal installations. Includes measurable specification and documentation

Huang, Haiying

250

CAMASSA-HOLM TYPE EQUATIONS FOR AXISYMMETRIC POISEUILLE PIPE FLOWS  

E-Print Network [OSTI]

CAMASSA-HOLM TYPE EQUATIONS FOR AXISYMMETRIC POISEUILLE PIPE FLOWS FRANCESCO FEDELE AND DENYS in non-rotating axisymmetric Poiseuille pipe flows. The associated Navier-Stokes equations are reduced-axisymmetric disturbances. Contents 1. Introduction 1 2. Camassa-Holm type equations for axisymmetric pipe flows 2 3

251

Nonlinear analysis of transient flow in a piping network  

E-Print Network [OSTI]

Nonlinear analysis of transient flow in a piping network Weihua Cai and Mihir Sen Department Mathematical models of piping networks are in the form of a system of nonlin- ear differential analysis method are needed to give a good approximation. Keywords piping networks, perturbation

Sen, Mihir

252

CAMASSAHOLM EQUATIONS AND VORTEXONS FOR AXISYMMETRIC PIPE FLOWS  

E-Print Network [OSTI]

CAMASSA­HOLM EQUATIONS AND VORTEXONS FOR AXISYMMETRIC PIPE FLOWS FRANCESCO FEDELE AND DENYS DUTYKH state in non-rotating Poiseuille pipe flows. In particular, we show that the associated Navier they correspond to localized toroidal vortices that concentrate near the pipe boundaries (wall vortexons) or wrap

253

How mechanical pipe organ actions work against transient control  

E-Print Network [OSTI]

How mechanical pipe organ actions work against transient control A. Woolley University of Edinburgh be clearly demonstrated by blowing an organ pipe that it's transient can be varied, although the effect is not generally considered `musical'. It has been debated for several decades whether mechanical pipe organ

Paris-Sud XI, Université de

254

CAMASSAHOLM TYPE EQUATIONS FOR AXISYMMETRIC POISEUILLE PIPE FLOWS  

E-Print Network [OSTI]

CAMASSA­HOLM TYPE EQUATIONS FOR AXISYMMETRIC POISEUILLE PIPE FLOWS FRANCESCO FEDELE AND DENYS in non-rotating axisymmetric Poiseuille pipe flows. The associated Navier-Stokes equations are reduced-axisymmetric disturbances. Contents 1 Introduction 1 2 Camassa-Holm type equations for axisymmetric pipe flows 2 3 Singular

Boyer, Edmond

255

EXPERIMENTAL ANALYSIS OF JET FIRE IMPINGEMENT ON INDUSTRIAL PIPE  

E-Print Network [OSTI]

EXPERIMENTAL ANALYSIS OF JET FIRE IMPINGEMENT ON INDUSTRIAL PIPE Patei S.*, Durasse! T. INERIS fîres and pool fïres can increase hazards when they impinge and engulf on pipes or vessels. Then, thèse of fïres on industrial pipes and tanks. Its main objective is to develop, to validate and to produce one

Paris-Sud XI, Université de

256

Acoustics of Two-Phase Pipe Flows Samenstelling promotiecommissie  

E-Print Network [OSTI]

Acoustics of Two-Phase Pipe Flows #12;Samenstelling promotiecommissie: prof. dr. ir. L. van Universiteit Twente Acoustics of Two-Phase Pipe Flows P.J. van Dijk Cover: Lidewij van Rijssen Printed. ISBN 90-365-2188-2 c P.J. van Dijk, 2005. #12;ACOUSTICS OF TWO-PHASE PIPE FLOWS PROEFSCHRIFT ter

Twente, Universiteit

257

VORTEXONS IN AXISYMMETRIC POISEUILLE PIPE FLOWS FRANCESCO FEDELE  

E-Print Network [OSTI]

VORTEXONS IN AXISYMMETRIC POISEUILLE PIPE FLOWS FRANCESCO FEDELE AND DENYS DUTYKH Abstract. We-rotating axisymmetric Poiseuille pipe flows. At high Reynolds numbers, the associated Navier-Stokes equations can to localized toroidal vortices concentrated near the pipe boundaries (wall vortexons) or that wrap around

258

Exact Coherent Structures in Pipe Flow: Travelling Wave Solutions  

E-Print Network [OSTI]

1 Exact Coherent Structures in Pipe Flow: Travelling Wave Solutions H. Wedin & R.R. Kerswell pipe. They consist of three well-defined flow features - streamwise rolls and streaks which dominate symmetry they possess about the pipe axis with m = 1, 2, 3, 4, 5 and 6 solutions identified. All are born

Burton, Geoffrey R.

259

Transition in Localized Pipe Flow Turbulence Fernando Mellibovsky,1  

E-Print Network [OSTI]

Transition in Localized Pipe Flow Turbulence Fernando Mellibovsky,1 Alvaro Meseguer,1 Tobias M (Received 24 March 2009; published 31 July 2009) Direct numerical simulation of transitional pipe flow, during the second stage, spreads out to fill the pipe. DOI: 10.1103/PhysRevLett.103.054502 PACS numbers

Meseguer, Alvaro

260

GEOMETRIC MODELING OF A BRECCIA PIPE COMPARING FIVE APPROACHES  

E-Print Network [OSTI]

GEOMETRIC MODELING OF A BRECCIA PIPE ­ COMPARING FIVE APPROACHES (36th APCOM, November 4-8, 2013 but also, among geologists, for its typical breccia pipe named "Braden", an almost vertical poorly. As the edge of the pipe constitutes the limit of the deposit and of the mining operation, estimating

Paris-Sud XI, Université de

Note: This page contains sample records for the topic "flush water piping" 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

Sequence Learning Through PIPE and Automatic Task Decomposition  

E-Print Network [OSTI]

Sequence Learning Through PIPE and Automatic Task Decomposition Rafal P. Salustowicz and Jurgen by long time lags: we show that discrete Probabilistic Incremental Program Evolu- tion" PIPE can solve Memory" | LSTM. In fact, some- times PIPE even outperforms LSTM. Exist- ing discrete methods, however

Fernandez, Thomas

262

GAPRUS -GENETIC ALGORITHMS BASED PIPE ROUTING USING TESSELLATED OBJECTS  

E-Print Network [OSTI]

GAPRUS - GENETIC ALGORITHMS BASED PIPE ROUTING USING TESSELLATED OBJECTS Sunand Sandurkar Software OF COMPUTERS IN INDUSTRY, SEPT. 10, 98 #12;2 ABSTRACT Pipe routing is the technique of developing collision free routes for pipes between two locations in an environment scattered with obstacles. In the past

Chen, Wei

263

Maximizing Vertical Air on a Quarter Pipe February 14, 2011  

E-Print Network [OSTI]

Maximizing Vertical Air on a Quarter Pipe February 14, 2011 Abstract The current record for maximum vertical air achieved by a snow- boarder on a half pipe is 24 feet and 11 inches. We wish to construct a number of moves. To optimize vertical air we suggest a quarter pipe were incoming velocity and therefore

Morrow, James A.

264

Safe water storage in Kenya's modified clay pot : standardization, tap design, and cost recovery  

E-Print Network [OSTI]

One of the main components necessary for providing safe drinking water for users who lack piped water in the home is the ability to safely store it in the home. Users in the Nyanza Province of Kenya frequently carry water ...

Young, Suzanne E

2005-01-01T23:59:59.000Z

265

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

266

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

267

A lead-before-break strategy for primary heat transport piping of 500 MWe Indian PHWR  

SciTech Connect (OSTI)

Leak-Before-Break (LBB) is being used to design the primary heat transport piping system of 500 MWe Indian Pressurized Heavy Water Reactors (IPHWR). The work is categorized in three directions to demonstrate three levels of safety against sudden catastrophic break. Level 1 is inherent in the design procedure of piping system as per ASME Sec.III with a well defined factor of safety. Level 2 consists of fatigue crack growth study of a postulated part-through flaw at the inside surface of pipes. Level 3 is stability analysis of a postulated leakage size flaw under the maximum credible loading condition. Developmental work related to demonstration of level 2 and level 3 confidence is described in this paper. In a case study on fatigue crack growth on PHT straight pipes for level 2, negligible crack growth is predicted for the life of the reactor. For level 3 analysis, the R6 method has been adopted. A database to evaluate SIF of elbows with throughwall flaws under combined internal pressure and bending moment has been generated to provide one of the inputs for R6 method. The methodology of safety assessment of elbow using R6 method has been demonstrated for a typical pump discharge elbow. In this analysis, limit load of the cracked elbow has been determined by carrying out elasto-plastic finite element analysis. The limit load results compared well with those given by Miller. However, it requires further study to give a general form of limit load solution. On the experimental front, a set of small diameter pipe fracture experiments have been carried out at room temperature and 300{degrees}C. Two important observations of the experiments are - appreciable drop in maximum load at 300{degrees}C in case of SS pipes and out-of-plane crack growth in case of CS pipes. Experimental load deflection curves are finally compared with five J-estimation schemes predictions. A material database of PHT piping materials is also being generated for use in LBB analysis.

Chattopadhyay, J.; Dutta, B.K.; Kushwaha, H.S. [Bhabha Atomic Research Centre, Bombay (India)] [and others

1997-04-01T23:59:59.000Z

268

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

269

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

270

Experimental investigation on performance of ice storage air-conditioning system with separate heat pipe  

SciTech Connect (OSTI)

An experimental study on operation performance of ice storage air-conditioning system with separate helical heat pipe is conducted in this paper. The experimental system of ice storage air-conditioning system with separate heat pipe is set up. The performance parameters such as the evaporation pressure and the condensation pressure of refrigeration system, the refrigeration capacity and the COP (coefficient of performance) of the system, the IPF (ice packing factor) and the cool storage capacity in the cool storage tank during charging period, and the cool discharge rate and the cool discharge capacity in the cool storage tank, the outlet water temperature in the cool storage tank and the outlet air temperature in room unit during discharging period are investigated. The experimental results show that the ice storage air-conditioning system with separate helical heat pipe can stably work during charging and discharging period. This indicates that the ice storage air-conditioning system with separate helical heat pipe is well adapted to cool storage air-conditioning systems in building. (author)

Fang, Guiyin; Liu, Xu; Wu, Shuangmao [Department of Physics, Nanjing University, Nanjing 210093 (China)

2009-11-15T23:59:59.000Z

271

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

272

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

273

Corrosion failures of austenitic stainless steel piping  

SciTech Connect (OSTI)

The safe and efficient operation of many chemical/industrial systems requires the continued integrity of the process piping; this is achieved through a complex series of interactions influenced by design, fabrication, construction, operation, inspection and lay-up requirements. Potential material-enviroment interactions are frequently, if evaluated at all, relegated to secondary considerations. This tendency virtually assures corrosion induced degradation of the process piping systems. Pitting, crevice attack, stress cracking, microbiologically influenced corrosion, intergranular attack and corrosion fatigue have caused leaks, cracks, failures and shutdown of numerous process systems. This paper uses the lessons learned from failure analysis to emphasize the importance of an integrated material program to system success. The necessity of continuing evaluation if also emphasized through examples of failures which were associated with materials-environment interactions caused by slight alterations of processes and/or systems.

Louthan, M.R. Jr.

1993-10-01T23:59:59.000Z

274

Application of LBB to a nozzle-pipe interface  

SciTech Connect (OSTI)

Typical LBB (Leak-Before-Break) analysis is performed for the highest stress location for each different type of material in the high energy pipe line. In most cases, the highest stress occurs at the nozzle and pipe interface location at the terminal end. The standard finite element analysis approach to calculate J-Integral values at the crack tip utilizes symmetry conditions when modeling near the nozzle as well as away from the nozzle region to minimize the model size and simplify the calculation of J-integral values at the crack tip. A factor of two is typically applied to the J-integral value to account for symmetric conditions. This simplified analysis can lead to conservative results especially for small diameter pipes where the asymmetry of the nozzle-pipe interface is ignored. The stiffness of the residual piping system and non-symmetries of geometry along with different material for the nozzle, safe end and pipe are usually omitted in current LBB methodology. In this paper, the effects of non-symmetries due to geometry and material at the pipe-nozzle interface are presented. Various LBB analyses are performed for a small diameter piping system to evaluate the effect a nozzle has on the J-integral calculation, crack opening area and crack stability. In addition, material differences between the nozzle and pipe are evaluated. Comparison is made between a pipe model and a nozzle-pipe interface model, and a LBB PED (Piping Evaluation Diagram) curve is developed to summarize the results for use by piping designers.

Yu, Y.J.; Sohn, G.H.; Kim, Y.J. [and others

1997-04-01T23:59:59.000Z

275

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.; Adkins, Douglas R.; Moreno, James B.; Rawlinson, K. Scott; Showalter, Steven K.; Moss, Timothy A.

2003-11-18T23:59:59.000Z

276

Determination of leakage areas in nuclear piping  

SciTech Connect (OSTI)

For the design and operation of nuclear power plants the Leak-Before-Break (LBB) behavior of a piping component has to be shown. This means that the length of a crack resulting in a leak is smaller than the critical crack length and that the leak is safely detectable by a suitable monitoring system. The LBB-concept of Siemens/KWU is based on computer codes for the evaluation of critical crack lengths, crack openings, leakage areas and leakage rates, developed by Siemens/KWU. In the experience with the leak rate program is described while this paper deals with the computation of crack openings and leakage areas of longitudinal and circumferential cracks by means of fracture mechanics. The leakage areas are determined by the integration of the crack openings along the crack front, considering plasticity and geometrical effects. They are evaluated with respect to minimum values for the design of leak detection systems, and maximum values for controlling jet and reaction forces. By means of fracture mechanics LBB for subcritical cracks has to be shown and the calculation of leakage areas is the basis for quantitatively determining the discharge rate of leaking subcritical through-wall cracks. The analytical approach and its validation will be presented for two examples of complex structures. The first one is a pipe branch containing a circumferential crack and the second one is a pipe bend with a longitudinal crack.

Keim, E. [Siemens/KWU, Erlangen (Germany)

1997-04-01T23:59:59.000Z

277

Statistical estimation of water distribution system pipe break risk  

E-Print Network [OSTI]

and maintenance decisions. A number of statistical methods have been proposed for this estimation problem. This thesis focuses on comparing these statistical models on the basis of short time histories. The goals of this research are to estimate the likelihood...

Yamijala, Shridhar

2009-05-15T23:59:59.000Z

278

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

Energy Savers [EERE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy UsageAUDITVehicles »ExchangeDepartmentResolve to Save EnergySandiaDepartmentof

279

Fluid transients and fluid-structure interaction in flexible liquid-filled piping  

E-Print Network [OSTI]

Fluid transients and fluid-structure interaction in flexible liquid-filled piping David C Wiggert in piping systems FSI consists of the transfer of momentum and forces between piping and the contained or may be initiated by mechanical ac- tion of the piping. The interaction is manifested in pipe vibration

Tijsseling, A.S.

280

Identification and evaluation of alternatives for the disposition of fluoride fuel and flush salts from the molten salt reactor experiment at Oak Ridge National Laboratory, Oak Ridge, Tennessee  

SciTech Connect (OSTI)

This document presents an initial identification and evaluation of the alternatives for disposition of the fluoride fuel and flush salts stored in the drain tanks at the Molten Salt Reactor Experiment (MSRE) at Oak Ridge National Laboratory (ORNL). It will serve as a resource for the U.S. Department of Energy contractor preparing the feasibility study for this activity under the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA). This document will also facilitate further discussion on the range of credible alternatives, and the relative merits of alternatives, throughout the time that a final alternative is selected under the CERCLA process.

NONE

1996-08-15T23:59:59.000Z

Note: This page contains sample records for the topic "flush water piping" 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

Prediction of annular liquid-gas flow with entrainment: cocurrent vertical pipe flow with gravity. [PWR; BWR  

SciTech Connect (OSTI)

A simplified semi-empirical model is developed for annular two-phase (gas-liquid) flow with liquid entrainment in a vertical pipe. Gravity effects are included. Model predictions are compared to test data obtained with air-water, air-trichloroethane, and steam-water mixtures. The agreement is generally good between model and test results for pressure drop, liquid film thickness and wavyness, and liquid entrainment.

Levy, S.; Healzer, J.M.

1980-09-01T23:59:59.000Z

282

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

283

The effect of pipe spacing on marine pipeline scour  

E-Print Network [OSTI]

. The exposed pipe may be damaged since pipelines generally are not designed for conditions where spanning and vibrations due to vortex shedding occur (Herbich et al. 1984). In shallow depths, pipelines are usually buried, placed in trenches or undergo self..., exposing buried pipelines. Once exposed, the pipe lays on the surface of the seabed, and is further subjected to scouring currents. Local and area scour threaten pipeline stability which may damage the pipe. Scour holes endanger stability when large free...

Westerhorstmann, Joseph Henry

2012-06-07T23:59:59.000Z

284

Heat Pipe Technology for Energy Conservation in the Process Industry  

E-Print Network [OSTI]

and installation eXBenses. Summary The use of heat pipes in recovering t ermal energy has been shown to offer many advant ges over alternative typP. systems. Probably tje most attractive feature of any heat pipe heat e changer is its adaptability to a wine...HEAT PIPE TECHNOLOGY FOR ENERGY CONSERVATION IN THE PROCESS INDUSTRY Berwin L. Price. Jr. Q-dot Corporation Garland. Texas ABSTRACT Many applications for heat pipe technology have emerged in the relatively short time this technology has been...

Price, B. L. Jr.

285

Global optimization of pipe networks by the interval analysis approach  

E-Print Network [OSTI]

Nov 20, 2011 ... Global optimization of pipe networks by the interval analysis approach: the Belgium network case. J.F. Bonnans(Frederic.Bonnans ***at***...

J.F. Bonnans

2011-11-20T23:59:59.000Z

286

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

287

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

288

Heat pipe with improved wick structures  

DOE Patents [OSTI]

An improved planar heat pipe wick structure having projections formed by micromachining processes. The projections form arrays of interlocking, semi-closed structures with multiple flow paths on the substrate. The projections also include overhanging caps at their tops to increase the capillary pumping action of the wick structure. The capped projections can be formed in stacked layers. Another layer of smaller, more closely spaced projections without caps can also be formed on the substrate in between the capped projections. Inexpensive materials such as Kovar can be used as substrates, and the projections can be formed by electrodepositing nickel through photoresist masks.

Benson, David A. (Albuquerque, NM); Robino, Charles V. (Albuquerque, NM); Palmer, David W. (Albuquerque, NM); Kravitz, Stanley H. (Placitas, NM)

2000-01-01T23:59:59.000Z

289

Heat pipe transient measurements incorporating visual methods  

E-Print Network [OSTI]

liftoff on January 28, 1 9B6. These five men and two women gave their lives while att mpting to lead mankind into space and open the door for the future of our race. Their noble sacr ifice should r. ever be . orgotten. ACKNOWLEDGEMENTS I wish...!!CE December 1986 Major Subject: 1'uclear Eng nearing HEAT PIPE TRANSIENT MEASUREMENTS INCORPORATING VISUAL METHODS A Thesis by MARK DAVID DeHART Approved as to style and content by: Frederick R. Best (Chairman of Committee) Carl A. Erdman (Member...

DeHart, Mark David

1986-01-01T23:59:59.000Z

290

Pipe diffusion at dislocations in UO2  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 - September 2006Photovoltaic Theory and ModelingPink Skies Coming ToFUEL.P8.01 Pipe

291

Dimensions of Al proton beam-pipe '96 and '97 The beam-pipe for the '96 and '97 run includes segments 1 -15*.  

E-Print Network [OSTI]

Dimensions of Al proton beam-pipe '96 and '97 The beam-pipe for the '96 and '97 run includes segments 1 - 15*. Segments 1 - 26 were the final pipe as planned in '96. Beam-pipe segments start at Z0 15* 120 132 8592 149 1 133,4 8698 212 2863 welding material: + 3% 2949 Detector.xls(Al pipe) Page 1

292

Sizing the first flush and its effect on the storage-reliability-yield behavior of rainwater harvesting in Rwanda  

E-Print Network [OSTI]

Rainwater harvesting is a technology used to supply water for domestic purposes in developing countries. Rooftop rainwater harvesting involves collection of rainwater from a rooftop via a guttering system and storage in a ...

Doyle, Kelly C. (Kelly Carroll)

2008-01-01T23:59:59.000Z

293

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.

294

Computational model of miniature pulsating heat pipes.  

SciTech Connect (OSTI)

The modeling work described herein represents Sandia National Laboratories (SNL) portion of a collaborative three-year project with Northrop Grumman Electronic Systems (NGES) and the University of Missouri to develop an advanced, thermal ground-plane (TGP), which is a device, of planar configuration, that delivers heat from a source to an ambient environment with high efficiency. Work at all three institutions was funded by DARPA/MTO; Sandia was funded under DARPA/MTO project number 015070924. This is the final report on this project for SNL. This report presents a numerical model of a pulsating heat pipe, a device employing a two phase (liquid and its vapor) working fluid confined in a closed loop channel etched/milled into a serpentine configuration in a solid metal plate. The device delivers heat from an evaporator (hot zone) to a condenser (cold zone). This new model includes key physical processes important to the operation of flat plate pulsating heat pipes (e.g. dynamic bubble nucleation, evaporation and condensation), together with conjugate heat transfer with the solid portion of the device. The model qualitatively and quantitatively predicts performance characteristics and metrics, which was demonstrated by favorable comparisons with experimental results on similar configurations. Application of the model also corroborated many previous performance observations with respect to key parameters such as heat load, fill ratio and orientation.

Martinez, Mario J.; Givler, Richard C.

2013-01-01T23:59:59.000Z

295

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

296

Simplifying Ground Water Transfers in Integrated Management Plans  

E-Print Network [OSTI]

-714 need new high-capacity wells in FA basins for e.g. ethanol plants so ethanol plant buys water and/or ground water rights from local irrigators buying water: use on-site former irrigation well for ethanol plant or else pipe water from existing from irrigation well to ethanol plant buying rights: cap

Nebraska-Lincoln, University of

297

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

298

Response margins of the dynamic analysis of piping systems  

SciTech Connect (OSTI)

This report is organized as follows: Section 2 describes the three piping systems of the Zion nuclear power plant which formed the basis of the present study. The auxiliary feedwater (AFW) piping from steam generator to containment, the residual heat removal (RHR) and safety injection piping in the auxiliary building, and the reactor coolant loops (RCL) including a portion of the branch lines were analyzed. Section 3 describes the analysis methods and the analyses performed. Section 4 presents the numerical results; the principal results presented as comparisons of response calculated by best estimate time history analysis methods vs. the SRP response spectrum technique. Section 5 draws conclusions from the results. Appendix A contains a brief description of the mathematical models that defined the structures containing the three piping systems. Response from these models provided input to the piping models. Appendix B provides a detailed derivation of the pseudostatic mode approach to the multisupport time history analysis method used in this study.

Johnson, J.J.; Benda, B.J.; Chuang, T.Y.; Smith, P.D.

1984-04-01T23:59:59.000Z

299

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

300

Modelling of unidirectional thermal diffusers in shallow water  

E-Print Network [OSTI]

This study is an experimental and theoretical investigation of the temperature field and velocity field induced by a unidirectional thermal diffuser in shallow water. A multiport thermal diffuser is essentially a pipe laid ...

Lee, Joseph Hun-Wei

1977-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "flush water piping" 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

Probability of pipe fracture in the primary coolant loop of a PWR plant. Volume 5. Probabilistic fracture mechanics analysis. Load Combination Program Project I final report  

SciTech Connect (OSTI)

The primary purpose of the Load Combination Program covered in this report is to estimate the probability of a seismic induced LOCA in the primary piping of a commercial pressurized water reactor (PWR). Best estimates, rather than upper bound results are desired. This was accomplished by use of a fracture mechanics model that employs a random distribution of initial cracks in the piping welds. Estimates of the probability of cracks of various sizes initially existing in the welds are combined with fracture mechanics calculations of how these cracks would grow during service. This then leads to direct estimates of the probability of failure as a function of time and location within the piping system. The influence of varying the stress history to which the piping is subjected is easily determined. Seismic events enter into the analysis through the stresses they impose on the pipes. Hence, the influence of various seismic events on the piping failure probability can be determined, thereby providing the desired information.

Harris, D.O.; Lim, E.Y.; Dedhia, D.D.

1981-06-01T23:59:59.000Z

302

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-source...

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

2006-01-01T23:59:59.000Z

303

Closure report for underground storage tank 141-R3U1 and its associated underground piping  

SciTech Connect (OSTI)

Underground storage tank UST 141-R3U1 at Lawrence Livermore National Laboratory (LLNL), was registered with the State Water Resources Control Board on June 27, 1984. This tank system consisted of a concrete tank, lined with polyvinyl chloride, and approximately 100 feet of PVC underground piping. UST 141-R3U1 had a capacity of 450 gallons. The underground piping connected three floor drains and one sink inside Building 141 to UST 141-R3U1. The wastewater collected in UST 141-R3U1 contained organic solvents, metals, and inorganic acids. On November 30, 1987, the 141-R3U1 tank system failed a precision tank test. The 141-R3U1 tank system was subsequently emptied and removed from service pending further precision tests to determine the location of the leak within the tank system. A precision tank test on February 5, 1988, was performed to confirm the November 30, 1987 test. Four additional precision tests were performed on this tank system between February 25, 1988, and March 6, 1988. The leak was located where the inlet piping from Building 141 penetrates the concrete side of UST 141-R3U1. The volume of wastewater that entered the backfill and soil around and/or beneath UST 141-R3U1 is unknown. On December 13, 1989, the LLNL Environmental Restoration Division submitted a plan to close UST 141-R3U1 and its associated piping to the Alameda County Department of Environmental Health. UST 141-R3U1 was closed as an UST, and shall be used instead as additional secondary containment for two aboveground storage tanks.

Mallon, B.J.; Blake, R.G.

1994-03-01T23:59:59.000Z

304

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

305

Persistence of a pinch in a pipe  

E-Print Network [OSTI]

The response of low-dimensional solid objects combines geometry and physics in unusual ways, exemplified in structures of great utility such as a thin-walled tube that is ubiquitous in nature and technology. Here we provide a particularly surprising consequence of this confluence of geometry and physics in tubular structures: the anomalously large persistence of a localized pinch in an elastic pipe whose effect decays very slowly as an oscillatory exponential with a persistence length that diverges as the thickness of the tube vanishes, which we confirm experimentally. The result is more a consequence of geometry than material properties, and is thus equally applicable to carbon nanotubes as it is to oil pipelines.

L. Mahadevan; A. Vaziri; Moumita Das

2006-07-13T23:59:59.000Z

306

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 exists for assessing the quality of fusion joints in the field. Visual examination and pressure testing are current nondestructive approaches, which do not provide any assurance about the long-term pipeline performance. This project developed, demonstrated, and validated an in-situ nondestructive inspection method for butt fusion joints in gas distribution plastic pipelines. The inspection system includes a laser-based image-recognition system that automatically generates and interprets digital images of pipe joints and assigns them a pass/fail rating, which eliminates operator bias in evaluating joint quality. An EWI-patented process, the Weld Zone Inspection Method (WZIM) was developed in which local heat is applied to the joint region to relax the residual stresses formed by the original joining operation, which reveals 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 nonstandard conditions. These welds were subjected to the WZIM and two destructive forms of testing: short-term tensile testing and long-term creep rupture testing. There appears to be a direct correlation between the WZIM and the destructive testing results. Although WZIM appears to be more sensitive than destructive testing can verify, the approach appears valid.

Connie Reichert

2005-09-01T23:59:59.000Z

307

Piping & Drumming Entry Form DEADLINE-postmarked by March 5, 2013  

E-Print Network [OSTI]

Piping & Drumming Entry Form DEADLINE- postmarked by March 5, 2013 Name of Solo Competitor: ___________________________________________ Entry Fee: $20.00 Make payable to: Highlander Pipe Band Foundation (Circle one) PIPING DRUMMING Event, UCR Pipe Band, its games committee, their agents, representatives, successors and assignees, for any

Mills, Allen P.

308

Sound transmission through a periodic cascade with application to drill pipes  

E-Print Network [OSTI]

Sound transmission through a periodic cascade with application to drill pipes Niels J. C. Lous Acoustical data transmission through the wall of drill pipes is considered. Drill pipes are known to behave the frequency domain drill pipe models presented by Barnes and Kirkwood J. Acoust. Soc. Am. 51, 1606­1608 1972

Rienstra, Sjoerd W.

309

The measurement of complex intensity near the open end of a flanged cylindrical pipe  

E-Print Network [OSTI]

The measurement of complex intensity near the open end of a flanged cylindrical pipe J. Prisutova instantaneous inten- sity near the open end of a flanged pipe. The measurements are then used to quantify the energy travelling out of the pipe and the energy oscillating back and forth inside the pipe. This has

Boyer, Edmond

310

http://rcc.its.psu.edu/hpc FE modeling of guided wave focusing in coated pipes  

E-Print Network [OSTI]

http://rcc.its.psu.edu/hpc FE modeling of guided wave focusing in coated pipes Dr. Joseph L. Rose in coated pipes. The process of modeling is discussed below. The modeled pipe is an 8 in. schedule 40 steel pipe with 1.5 mm thick bitumastic 50 coating. The focal distance is designed to be 5.6 m. The focusing

Bjørnstad, Ottar Nordal

311

Piping by queens of Apis cerana Fabricius 1793 and Apis koschevnikovi v Buttel-Reepen 1906  

E-Print Network [OSTI]

Short note Piping by queens of Apis cerana Fabricius 1793 and Apis koschevnikovi v Buttel Tenom, Sabah, Malaysia (Received 1 February 1993; accepted 1 August 1994) Summary Piping queens.39 quacks/s vs 3.0 quacks/s). queen piping / Apis cerana / Apis koschevnikovi INTRODUCTION Queen piping

Paris-Sud XI, Université de

312

OVERVIEW OF THE PIPE PROCESSOR IMPLEMENTATION Matthew K. Farrens Andrew R. Pleszkun  

E-Print Network [OSTI]

# # OVERVIEW OF THE PIPE PROCESSOR IMPLEMENTATION Matthew K. Farrens Andrew R. Pleszkun Computer@tosca.colorado.edu) ABSTRACT The PIPE processor is an outgrowth of the PIPE Project, a research project at the University implementation. The implemented PIPE processor is a 32­bit pipelined single chip processor with a simplified load

Farrens, Matthew K.

313

Experimental study of hydraulic transport of large particles in horizontal and S-shape pipes  

E-Print Network [OSTI]

Experimental study of hydraulic transport of large particles in horizontal and S-shape pipes F and solid mixture that flows in a horizontal pipe and in a vertical S-shaped pipe. Two densities are used for the solids. The solids are spheres that are large with respect to the diameter of the pipe (5, 10 and 15

Paris-Sud XI, Université de

314

Pipes, streams, and the user environment Hands-On Unix System Administration DeCal  

E-Print Network [OSTI]

Pipes, streams, and the user environment Hands-On Unix System Administration DeCal Lab 2 -- 10, lecture13, lecture26 with a wild- card expression. 3 Streams, redirection, and pipes 11. What is /dev to get a feel for what it does first. 3 #12;3.1 Named pipes 14. Name one difference between named pipes

Walker, Matthew P.

315

Aeroacoustic investigation of a flow pipe with a small cavity using the lattice Boltzmann method.  

E-Print Network [OSTI]

Aeroacoustic investigation of a flow pipe with a small cavity using the lattice Boltzmann method and associated sound generation in a flow pipe having a cavity close to the pipe's en- try section. The study a detailed parametric investigation. It is shown that vortices are formed by flow separation at the pipe

Paris-Sud XI, Université de

316

Mercury Flow through a Long Curved Pipe Wenhai Li & Foluso Ladeinde  

E-Print Network [OSTI]

Mercury Flow through a Long Curved Pipe Wenhai Li & Foluso Ladeinde Department of Mechanical Engineering Stony Brook University Summary The flow of mercury in a long, curved pipe is simulated that includes the effects of the viscosity of mercury, turbulence in the pipe, pressure force, and pipe friction

McDonald, Kirk

317

OBJECT-ORIENTED MEASUREMENT OF PIPE SYSTEMS USING EDGE MATCHING AND CSG MODELS WITH CONSTRAINTS  

E-Print Network [OSTI]

OBJECT-ORIENTED MEASUREMENT OF PIPE SYSTEMS USING EDGE MATCHING AND CSG MODELS WITH CONSTRAINTS, reconstruction ABSTRACT A method for the measurement of pipe systems from a collection of images is presented of piping elements. An initial measurement of each component of the pipe system is obtained by selecting

Vosselman, George

318

Am. Midl. Nat. 144:168177 Use of PVC Pipe Refugia as a Sampling Technique for  

E-Print Network [OSTI]

168 Am. Midl. Nat. 144:168­177 Use of PVC Pipe Refugia as a Sampling Technique for Hylid Treefrogs.--We used retreats made from white polyvinyl chloride (PVC) pipes to capture hylids and determined how pipe- ficial refugia such as polyvinyl chloride (PVC) pipe, bamboo, tin cans and wood nest boxes (Goin, 1958

Johnson, Matthew

319

Radiation detector system having heat pipe based cooling  

DOE Patents [OSTI]

A radiation detector system having a heat pipe based cooling. The radiation detector system includes a radiation detector thermally coupled to a thermo electric cooler (TEC). The TEC cools down the radiation detector, whereby heat is generated by the TEC. A heat removal device dissipates the heat generated by the TEC to surrounding environment. A heat pipe has a first end thermally coupled to the TEC to receive the heat generated by the TEC, and a second end thermally coupled to the heat removal device. The heat pipe transfers the heat generated by the TEC from the first end to the second end to be removed by the heat removal device.

Iwanczyk, Jan S.; Saveliev, Valeri D.; Barkan, Shaul

2006-10-31T23:59:59.000Z

320

Thermally Enhanced Pipe for Geothermal Applications Stphane Gonthier  

E-Print Network [OSTI]

Geothermal Pipe · It's a thermally enhanced pipe · The pipe has a thermal conductivity of 0,40 BTU/hr ft °F Geoexchange Coalition 0,4 to 2,2 Btu hr-1 ft-1°F-1 (soil) 0,43 to 1,15 Btu hr-1 ft-1°F-1 (backfilling) 0,58 to 2,6 Btu hr-1 ft-1°F-1 (bedrock) 0,22 to 0,24 Btu hr-1 ft-1°F-1 (HDPE 3608) RESULT An insulator

Note: This page contains sample records for the topic "flush water piping" 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

Natural gas transport by plastic pipes. (Latest citations from the Compendex database). Published Search  

SciTech Connect (OSTI)

The bibliography contains citations concerning the use of plastic piping to transport natural gas or liquid propane gas. The interaction between gas odorants and plastic pipe, the effects of aging on plastic pipe used to transport gas, and pipe failure analyses are examined. Bending, joining, and repair methods are discussed. Composite reinforced plastic pipes and plastic coated pipes are considered. Polyethylene and epoxy composites are among the materials discussed. Gas main upgrading projects that replaced old pipes with plastic ones are briefly cited. (Contains a minimum of 88 citations and includes a subject term index and title list.)

Not Available

1993-07-01T23:59:59.000Z

322

Piping support system for liquid-metal fast-breeder reactor  

DOE Patents [OSTI]

A pipe support consisting of a rigid link pivotally attached to a pipe and an anchor, adapted to generate stress or strain in the link and pipe due to pipe thermal movement, which stress or strain can oppose further pipe movement and generally provides pipe support. The pipe support can be used in multiple combinations with other pipe supports to form a support system. This support system is most useful in applications in which the pipe is normally operated at a constant elevated or depressed temperature such that desired stress or strain can be planned in advance of pipe and support installation. The support system is therefore especially useful in steam stations and in refrigeration equipment.

Brussalis, Jr., William G. (Forward Township, Washington County, PA)

1984-01-01T23:59:59.000Z

323

SWEEP - Save Water & Energy Education Program  

SciTech Connect (OSTI)

The objective of this study was to develop, monitor, analyze, and report on an integrated resource-conservation program highlighting efficient residential appliances and fixtures. The sites of study were 50 homes in two water-constrained communities located in Oregon. The program was designed to maximize water savings to these communities and to serve as a model for other communities seeking an integrated approach to energy and water resource efficiency. The program included the installation and in-place evaluation of energy- and water-efficient devices including the following: horizontal axis clothes washers (and the matching clothes dryers), resource-efficient dishwashers, an innovative dual flush low-flow toilet, low-flow showerheads, and faucet aerators. The significance of this activity lies in its integrated approach and unique metering evaluation of individual end-use, aggregated residential total use, and system-wide energy and water benefits.

Sullivan, Gregory P.; Elliott, Douglas B.; Hillman, Tim C.; Hadley, Adam; Ledbetter, Marc R.; Payson, David R.

2001-05-03T23:59:59.000Z

324

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

325

Information and self-selection in the PIPE market  

E-Print Network [OSTI]

PIPEs (Private Investments in Public Equity) are unique in that they are negotiated privately between sophisticated investors and the public firm. As a result, the issue price deviates from the firm's stock price, often ...

Koshal, Amit

2007-01-01T23:59:59.000Z

326

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

327

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

328

Fracture mechanics evaluation for at typical PWR primary coolant pipe  

SciTech Connect (OSTI)

For the primary coolant piping of PWRs in Japan, cast duplex stainless steel which is excellent in terms of strength, corrosion resistance, and weldability has conventionally been used. The cast duplex stainless steel contains the ferrite phase in the austenite matrix and thermal aging after long term service is known to change its material characteristics. It is considered appropriate to apply the methodology of elastic plastic fracture mechanics for an evaluation of the integrity of the primary coolant piping after thermal aging. Therefore we evaluated the integrity of the primary coolant piping for an initial PWR plant in Japan by means of elastic plastic fracture mechanics. The evaluation results show that the crack will not grow into an unstable fracture and the integrity of the piping will be secured, even when such through wall crack length is assumed to equal the fatigue crack growth length for a service period of up to 60 years.

Tanaka, T. [Kansai Electric Power Company, Osaka (Japan); Shimizu, S.; Ogata, Y. [Mitsubishi Heavy Industries, Ltd., Kobe (Japan)

1997-04-01T23:59:59.000Z

329

Apparatus for draining lower drywell pool water into suppresion pool in boiling water reactor  

DOE Patents [OSTI]

An apparatus which mitigates temperature stratification in the suppression pool water caused by hot water drained into the suppression pool from the lower drywell pool. The outlet of a spillover hole formed in the inner bounding wall of the suppression pool is connected to and in flow communication with one end of piping. The inlet end of the piping is above the water level in the suppression pool. The piping is routed down the vertical downcomer duct and through a hole formed in the thin wall separating the downcomer duct from the suppression pool water. The piping discharge end preferably has an elevation at or near the bottom of the suppression pool and has a location in the horizontal plane which is removed from the point where the piping first emerges on the suppression pool side of the inner bounding wall of the suppression pool. This enables water at the surface of the lower drywell pool to flow into and be discharged at the bottom of the suppression pool.

Gluntz, Douglas M. (San Jose, CA)

1996-01-01T23:59:59.000Z

330

Two-dimensional water quality modeling of Town Creek embayment on Guntersville Reservoir  

SciTech Connect (OSTI)

TVA investigated water quality of Town Creek embayment using a branched two-dimensional model of Guntersville Reservoir. Simulation results were compared in terms of algal biomass, nutrient concentrations, and volume of embayment with depleted dissolved oxygen. Stratification and flushing play a significant role in the embayment water quality. Storms introduce large loadings of organics, nutrients, and suspended solids. Dissolved oxygen depletion is most severe after storms followed by low flow that fails to flush the embayment. Embayment water quality responses to potential animal waste and erosion controls were explored. Modeling indicated animal waste controls were much more cost-effective than erosion controls. Erosion controls will decrease embayment suspended solids and thereby increase algal biomass due to greater light penetration. 29 refs., 16 figs., 4 tabs.

Bender, M.D.; Shiao, Ming C.; Hauser, G.E. (Tennessee Valley Authority, Norris, TN (USA). Engineering Lab.); Butkus, S.R. (Tennessee Valley Authority, Norris, TN (USA). Water Quality Dept.)

1990-09-01T23:59:59.000Z

331

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, 2005 through September 30, 2006 and contains the following discussions: Qualification Testing; Prototype Development and Testing of ''Smart Design'' Configuration; Field Test Demonstration; Development of Ultra-Short Radius Composite Drill Pipe (USR-CDP); and Development of Smart USR-CDP.

James C. Leslie; James C. Leslie, II; Lee Truong; James T. Heard

2006-09-29T23:59:59.000Z

332

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

333

Commercial high efficiency dehumidification systems using heat pipes  

SciTech Connect (OSTI)

An improved heat pipe design using separately connected two-section one-way flow heat pipes with internal microgrooves instead of wicks is described. This design is now commercially available for use to increase the dehumidification capacity of air conditioning systems. The design also includes a method of introducing fresh air into buildings while recovering heat and controlling the humidity of the incoming air. Included are applications and case studies, load calculations and technical data, and installation, operation, and maintenance information.

Not Available

1993-09-01T23:59:59.000Z

334

Flexible pipe crawling device having articulated two axis coupling  

DOE Patents [OSTI]

An apparatus for moving through the linear and non-linear segments of piping systems. The apparatus comprises a front leg assembly, a rear leg assembly, a mechanism for extension and retraction of the front and rear leg assembles with respect to each other, such as an air cylinder, and a pivoting joint. One end of the flexible joint attaches to the front leg assembly and the other end to the air cylinder, which is also connected to the rear leg assembly. The air cylinder allows the front and rear leg assemblies to progress through a pipe in "inchworm" fashion, while the joint provides the flexibility necessary for the pipe crawler to negotiate non-linear piping segments. The flexible connecting joint is coupled with a spring-force suspension system that urges alignment of the front and rear leg assemblies with respect to each other. The joint and suspension system cooperate to provide a firm yet flexible connection between the front and rear leg assemblies to allow the pivoting of one with respect to the other while moving around a non-linear pipe segment, but restoring proper alignment coming out of the pipe bend.

Zollinger, William T. (Martinez, GA)

1994-01-01T23:59:59.000Z

335

Flexible pipe crawling device having articulated two axis coupling  

DOE Patents [OSTI]

An apparatus is described for moving through the linear and non-linear segments of piping systems. The apparatus comprises a front leg assembly, a rear leg assembly, a mechanism for extension and retraction of the front and rear leg assembles with respect to each other, such as an air cylinder, and a pivoting joint. One end of the flexible joint attaches to the front leg assembly and the other end to the air cylinder, which is also connected to the rear leg assembly. The air cylinder allows the front and rear leg assemblies to progress through a pipe in inchworm' fashion, while the joint provides the flexibility necessary for the pipe crawler to negotiate non-linear piping segments. The flexible connecting joint is coupled with a spring-force suspension system that urges alignment of the front and rear leg assemblies with respect to each other. The joint and suspension system cooperate to provide a firm yet flexible connection between the front and rear leg assemblies to allow the pivoting of one with respect to the other while moving around a non-linear pipe segment, but restoring proper alignment coming out of the pipe bend. 4 figures.

Zollinger, W.T.

1994-05-10T23:59:59.000Z

336

2015 Pearson Education, Inc. Chapter 7 Water and Atmospheric Moisture  

E-Print Network [OSTI]

Education, Inc. Where did Earth's Water Come From? · Earth's water originated from icy comets and hydrogen pipes · Damaging vehicle's engine · Sinking ships #12;© 2015 Pearson Education, Inc. Iceberg King George, Inc. Three States of Water (H2O) H O H + + Hydrogen bond Negatively charged at O side Positively

Pan, Feifei

337

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

338

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

339

EGS rock reactions with Supercritical CO2 saturated with water and water saturated with Supercritical CO2  

SciTech Connect (OSTI)

EGS using CO2 as a working fluid will likely involve hydro-shearing low-permeability hot rock reservoirs with a water solution. After that process, the fractures will be flushed with CO2 that is maintained under supercritical conditions (> 70 bars). Much of the injected water in the main fracture will be flushed out with the initial CO2 injection; however side fractures, micro fractures, and the lower portion of the fracture will contain connate water that will interact with the rock and the injected CO2. Dissolution/precipitation reactions in the resulting scCO2/brine/rock systems have the potential to significantly alter reservoir permeability, so it is important to understand where these precipitates form and how are they related to the evolving free connate water in the system. To examine dissolution / precipitation behavior in such systems over time, we have conducted non-stirred batch experiments in the laboratory with pure minerals, sandstone, and basalt coupons with brine solution spiked with MnCl2 and scCO2. The coupons are exposed to liquid water saturated with scCO2 and extend above the water surface allowing the upper portion of the coupons to be exposed to scCO2 saturated with water. The coupons were subsequently analyzed using SEM to determine the location of reactions in both in and out of the liquid water. Results of these will be summarized with regard to significance for EGS with CO2 as a working fluid.

Earl D. Mattson; Travis L. McLing; William Smith; Carl Palmer

2013-02-01T23:59:59.000Z

340

TA-2 Water Boiler Reactor Decommissioning Project  

SciTech Connect (OSTI)

This final report addresses the Phase 2 decommissioning of the Water Boiler Reactor, biological shield, other components within the biological shield, and piping pits in the floor of the reactor building. External structures and underground piping associated with the gaseous effluent (stack) line from Technical Area 2 (TA-2) Water Boiler Reactor were removed in 1985--1986 as Phase 1 of reactor decommissioning. The cost of Phase 2 was approximately $623K. The decommissioning operation produced 173 m{sup 3} of low-level solid radioactive waste and 35 m{sup 3} of mixed waste. 15 refs., 25 figs., 3 tabs.

Durbin, M.E. (ed.); Montoya, G.M.

1991-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "flush water piping" 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

Technology in water conservation  

E-Print Network [OSTI]

be accomplished with instruments a#22;ached to pipelines at manholes. #27;ese devices ?listen? to the water #16;ow in the pipe; when they detect the characteristic sound of a leak, they report by radio to permanent or mobile collection points. Even a small... leak can be detected. Rainwater catchment may be a good way to replace water from other potable sources. In some situations, this involves using the simple technology of capturing rainfall runo#21; from a roof or another surface. In a hot, dry...

Finch, Dr. Calvin

2013-01-01T23:59:59.000Z

342

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

343

Seismic margins and calibration of piping systems  

SciTech Connect (OSTI)

The Seismic Safety Margins Research Program (SSMRP) is a US Nuclear Regulatory Commission-funded, multiyear program conducted by Lawrence Livermore National Laboratory (LLNL). Its objective is to develop a complete, fully coupled analysis procedure for estimating the risk of earthquake-induced radioactive release from a commercial nuclear power plant and to determine major contributors to the state-of-the-art seismic and systems analysis process and explicitly includes the uncertainties in such a process. The results will be used to improve seismic licensing requirements for nuclear power plants. In Phase I of SSMRP, the overall seismic risk assessment methodology was developed and assembled. The application of this methodology to the seismic PRA (Probabilistic Risk Assessment) at the Zion Nuclear Power Plant has been documented. This report documents the method deriving response factors. The response factors, which relate design calculated responses to best estimate values, were used in the seismic response determination of piping systems for a simplified seismic probablistic risk assessment. 13 references, 31 figures, 25 tables.

Shieh, L.C.; Tsai, N.C.; Yang, M.S.; Wong, W.L.

1985-01-01T23:59:59.000Z

344

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

345

Testing of Stirling engine solar reflux heat-pipe receivers  

SciTech Connect (OSTI)

Alkali metal heat-pipe receivers have been identified as a desirable interface to couple a Stirling-cycle engine with a parabolic dish solar concentrator. The reflux receiver provides power nearly isothermally to the engine heater heads while de-coupling the heater head design from the solar absorber surface design. The independent design of the receiver and engine heater head leads to high system efficiency. Heat pipe reflux receivers have been demonstrated at approximately 30 kW{sub t} power throughput by others. This size is suitable fm engine output powers up to 10 kW{sub e}. Several 25-kW{sub e}, Stirling-cycle engines exist, as well as designs for 75-kW{sub t} parabolic dish solar concentrators. The extension of heat pipe technology from 30 kW{sub t} to 75 kW{sub t} is not trivial. Heat pipe designs are pushed to their limits, and it is critical to understand the flux profiles expected from the dish, and the local performance of the wick structure. Sandia has developed instrumentation to monitor and control the operation of heat pipe reflux receivers to test their throughput limits, and analytical models to evaluate receiver designs. In the past 1.5 years, several heat pipe receivers have been tested on Sandia`s test bed concentrators (TBC`s) and 60-kW{sub t} solar furnace. A screen-wick heat pipe developed by Dynatherm was tested to 27.5 kW{sub t} throughput. A Cummins Power Generation (CPG)/Thermacore 30-kW{sub t} heat pipe was pushed to a throughput of 41 kW{sub t} to verify design models. A Sandia-design screen-wick and artery 75-kW{sub t} heat pipe and a CPG/Thermacore 75-kW{sub t} sintered-wick heat pipe were also limit tested on the TBC. This report reviews the design of these receivers, and compares test results with model predictions.

Rawlinson, S.; Cordeiro, P.; Dudley, V.; Moss, T.

1993-07-01T23:59:59.000Z

346

A STRUCTURAL INTEGRITY ASSESSMENT OF UNDERGROUND PIPING ASSOCIATED WITH THE TRANSFER OF RADIOACTIVE WASTE  

SciTech Connect (OSTI)

Radioactive wastes are confined in 49 underground storage tanks at the Savannah River Site. The waste is transported between tanks via underground transfer piping. An assessment of the structural integrity of the transfer piping was performed to ensure that the present condition of the piping was sound and to provide life expectancy estimates for the piping based on anticipated service. The assessment reviewed the original design of the piping, the potential and observed degradation mechanisms, the results from past inspections of the piping, and a Fitness-For-Service evaluation for a section of piping that experienced pitting in a locally thinned area. The assessment concluded that the piping was structurally sound. Assuming that service conditions remain the same, the piping will remain functional for its intended service life.

Wiersma, B

2006-04-25T23:59:59.000Z

347

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

348

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

349

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, D.M.

1996-03-12T23:59:59.000Z

350

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

351

Water quantity and quality model for the evaluation of water-management strategies in the Netherlands: application to the province of Friesland  

SciTech Connect (OSTI)

The Netherlands have a rather complex water-management system consisting of a number of major rivers, canals, lakes and ditches. Water-quantity management on a regional scale is necessary for an effective water-quality policy. To support water management, a computer model was developed that includes both water quality and water quantity, based on three submodels: ABOPOL for the water movement, DELWAQ for the calculation of water quality variables and BLOOM-II for the phytoplankton growth. The northern province of Friesland was chosen as a test case for the integrated model to be developed, where water quality is highly related to the water distribution and the main trade-off is minimizing the intake of (eutrophicated) alien water in order to minimize external nutrient load and maximizing the intake in order to flush channels and lakes. The results of the application of these models to this and to a number of hypothetical future situations are described.

Brinkman, J.J.; Griffioen, P.S.; Groot, S.; Los, F.J.

1987-03-01T23:59:59.000Z

352

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

353

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

354

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

355

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

356

Prediction of annular liquid-gas flow with entrainment: cocurrent vertical pipe flow with no gravity  

SciTech Connect (OSTI)

A fully developed and adiabatic two-phase annular model with liquid entrainment is derived for flow in a pipe with negligible gravity effects. The model subdivides the flow cross section into three regions: a liquid film, a gas core of constant density, and a transition wavy layer between them. The combination of a constant velocity and a density varying exponentially with distance from the wall is employed in the transition layer. Extensive comparisons of the model are made with air-water and steam-water test data, and the results generally are satisfactory over a wide range of conditions and for all the important characteristics of this flow pattern. A simplified model is developed to permit rapid and approximate calculations.

Levy, S.; Healzer, J.M.

1980-05-01T23:59:59.000Z

357

Development and Manufacture of Cost-Effective Composite Drill Pipe  

SciTech Connect (OSTI)

Advanced Composite Products and Technology, Inc. (ACPT) has developed composite drill pipe (CDP) that matches the structural and strength properties of steel drill pipe, but weighs less than 50 percent of its steel counterpart. Funding for the multiyear research and development of CDP was provided by the U.S. Department of Energy Office of Fossil Energy through the Natural Gas and Oil Projects Management Division at the National Energy Technology Laboratory (NETL). Composite materials made of carbon fibers and epoxy resin offer mechanical properties comparable to steel at less than half the weight. Composite drill pipe consists of a composite material tube with standard drill pipe steel box and pin connections. Unlike metal drill pipe, composite drill pipe can be easily designed, ordered, and produced to meet specific requirements for specific applications. Because it uses standard joint connectors, CDP can be used in lieu of any part of or for the entire steel drill pipe section. For low curvature extended reach, deep directional drilling, or ultra deep onshore or offshore drilling, the increased strength to weight ratio of CDP will increase the limits in all three drilling applications. Deceased weight will reduce hauling costs and increase the amount of drill pipe allowed on offshore platforms. In extreme extended reach areas and high-angle directional drilling, drilling limits are associated with both high angle (fatigue) and frictional effects resulting from the combination of high angle curvature and/or total weight. The radius of curvature for a hole as small as 40 feet (12.2 meters) or a build rate of 140 degrees per 100 feet is within the fatigue limits of specially designed CDP. Other properties that can be incorporated into the design and manufacture of composite drill pipe and make it attractive for specific applications are corrosion resistance, non-magnetic intervals, and abrasion resistance coatings. Since CDP has little or no electromagnetic force fields up to 74 kilohertz (KHz), a removable section of copper wire can be placed inside the composite pipe to short the tool joints electrically allowing electromagnetic signals inside the collar to induce and measure the same within the rock formation. By embedding a pair of wires in the composite section and using standard drill pipe box and pin ends equipped with a specially developed direct contact joint electrical interface, power can be supplied to measurement-while-drilling (MWD) and logging-while-drilling (LWD) bottom hole assemblies. Instantaneous high-speed data communications between near drill bit and the surface are obtainable utilizing this 'smart' drilling technology. The composite drill pipe developed by ACPT has been field tested successfully in several wells nationally and internationally. These tests were primarily for short radius and ultra short radius directional drilling. The CDP in most cases performed flawlessly with little or no appreciable wear. ACPT is currently marketing a complete line of composite drill collars, subs, isolators, casing, and drill pipe to meet the drilling industry's needs and tailored to replace metal for specific application requirements.

James C. Leslie

2008-12-31T23:59:59.000Z

358

Application of bounding spectra to seismic design of piping based on the performance of above ground piping in power plants subjected to strong motion earthquakes  

SciTech Connect (OSTI)

This report extends the potential application of Bounding Spectra evaluation procedures, developed as part of the A-46 Unresolved Safety Issue applicable to seismic verification of in-situ electrical and mechanical equipment, to in-situ safety related piping in nuclear power plants. The report presents a summary of earthquake experience data which define the behavior of typical U.S. power plant piping subject to strong motion earthquakes. The report defines those piping system caveats which would assure the seismic adequacy of the piping systems which meet those caveats and whose seismic demand are within the bounding spectra input. Based on the observed behavior of piping in strong motion earthquakes, the report describes the capabilities of the piping system to carry seismic loads as a function of the type of connection (i.e. threaded versus welded). This report also discusses in some detail the basic causes and mechanisms for earthquake damages and failures to power plant piping systems.

Stevenson, J.D. [Stevenson and Associates, Cleveland, OH (United States)

1995-02-01T23:59:59.000Z

359

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

360

Neutronic and thermal design considerations for heat-pipe reactors  

SciTech Connect (OSTI)

SABRE (Space-Arena Baseline Reactor) is a 100-kW/sub e/, heat-pipe-cooled, beryllium-reflected, fast reactor that produces heat at a temperature of 1500/sup 0/K and radiatively transmits it to high-temperature thermoelectric (TE) conversion elements. The use of heat pipes for core heat removal eliminates single-point failure mechanisms in the reactor cooling system, and provides minimal temperature drop radiative coupling to the TE array, as well as automatic, self-actuating removal of reactor afterheat. The question of how the failure of a fuel module heat pipe will affect neighboring fuel modules in the core is discussed, as is fission density peaking that occurs at the core/reflector interface. Results of neutronic calculations of the control margin available are described. Another issue that is addressed is that of helium generation in the heat pipes from neutron reactions in the core with the heat pipe fluid. Finally, the growth potential of the SABRE design to much higher powers is examined.

Ranken, W.A.; Koenig, D.R.

1983-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "flush water piping" 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

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

362

Crack stability analysis of low alloy steel primary coolant pipe  

SciTech Connect (OSTI)

At present, cast duplex stainless steel has been used for the primary coolant piping of PWRs in Japan and joints of dissimilar material have been applied for welding to reactor vessels and steam generators. For the primary coolant piping of the next APWR plants, application of low alloy steel that results in designing main loops with the same material is being studied. It means that there is no need to weld low alloy steel with stainless steel and that makes it possible to reduce the welding length. Attenuation of Ultra Sonic Wave Intensity is lower for low alloy steel than for stainless steel and they have advantageous inspection characteristics. In addition to that, the thermal expansion rate is smaller for low alloy steel than for stainless steel. In consideration of the above features of low alloy steel, the overall reliability of primary coolant piping is expected to be improved. Therefore, for the evaluation of crack stability of low alloy steel piping to be applied for primary loops, elastic-plastic future mechanics analysis was performed by means of a three-dimensioned FEM. The evaluation results for the low alloy steel pipings show that cracks will not grow into unstable fractures under maximum design load conditions, even when such a circumferential crack is assumed to be 6 times the size of the wall thickness.

Tanaka, T.; Kameyama, M. [Kansai Electric Power Company, Osaka (Japan); Urabe, Y. [Mitsubishi Heavy Industries, Ltd., Takasago (Japan)] [and others

1997-04-01T23:59:59.000Z

363

Flow and evaporation in single micrometer and nanometer scale pipes  

SciTech Connect (OSTI)

We report measurements of pressure driven flow of fluids entering vacuum through a single pipe of micrometer or nanometer scale diameter. Nanopores were fabricated by etching a single ion track in polymer or mica foils. A calibrated mass spectrometer was used to measure the flow rates of nitrogen and helium through pipes with diameter ranging from 10??m to 31?nm. The flow of gaseous and liquid nitrogen was studied near 77?K, while the flow of helium was studied from the lambda point (2.18?K) to above the critical point (5.2?K). Flow rates were controlled by changing the pressure drop across the pipe in the range 031 atm. When the pressure in the pipe reached the saturated vapor pressure, an abrupt flow transition was observed. A simple viscous flow model is used to determine the position of the liquid/vapor interface in the pipe. The observed mass flow rates are consistent with no slip boundary conditions.

Velasco, A. E.; Yang, C.; Siwy, Z. S.; Taborek, P. [Department of Physics and Astronomy, University of California, Irvine 92697 (United States); Toimil-Molares, M. E. [Department of Materials Science, GSI Helmholtzzentrum fur Schwerionenforschung GmbH, Darmstadt (Germany)

2014-07-21T23:59:59.000Z

364

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

365

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.

366

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

367

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

368

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

369

Terahertz Radiation from a Pipe with Small Corrugations  

SciTech Connect (OSTI)

We have studied through analytical and numerical methods the use of a relativistic electron bunch to drive a metallic beam pipe with small corrugations for the purpose of generating terahertz radiation. For the case of a pipe with dimensions that do not change along its length, we have shown that - with reasonable parameters - one can generate a narrow-band radiation pulse with frequency {approx}1 THz, and total energy of a few milli-Joules. The pulse length tends to be on the order of tens of picoseconds. We have also shown that, if the pipe radius is tapered along its length, the generated pulse will end up with a frequency chirp; if the pulse is then made to pass through a compressor, its final length can be reduced to a few picoseconds and its peak power increased to 1 GW. We have also shown that wall losses tend to be significant and need to be included in the structure design.

Bane, K.L.F.; Stupakov, G.; /SLAC

2012-01-26T23:59:59.000Z

370

Fracture properties evaluation of stainless steel piping for LBB applications  

SciTech Connect (OSTI)

The objective of this paper is to evaluate the material properties of SA312 TP316 and SA312 TP304 stainless steels and their associated welds manufactured for shutdown cooling line and safety injection line of nuclear generating stations. A total of 82 tensile tests and 58 fracture toughness tests on specimens taken from actual pipes were performed and the effect of various parameters such as the pipe size, the specimen orientation, the test temperature and the welding procedure on the material properties are discussed. Test results show that the effect of the test temperature on the fracture toughness was significant while the effects of the pipe size and the specimen orientation on the fracture toughness were negligible. The material properties of the GTAW weld metal was in general higher than those of the base metal.

Kim, Y.J.; Seok, C.S.; Chang, Y.S. [Sung Kyun Kwan Univ., Suwon (Korea, Republic of)

1997-04-01T23:59:59.000Z

371

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

372

Seismic fragility test of a 6-inch diameter pipe system  

SciTech Connect (OSTI)

This report contains the test results and assessments of seismic fragility tests performed on a 6-inch diameter piping system. The test was funded by the US Nuclear Regulatory Commission (NRC) and conducted by ETEC. The objective of the test was to investigate the ability of a representative nuclear piping system to withstand high level dynamic seismic and other loadings. Levels of loadings achieved during seismic testing were 20 to 30 times larger than normal elastic design evaluations to ASME Level D limits would permit. Based on failure data obtained during seismic and other dynamic testing, it was concluded that nuclear piping systems are inherently able to withstand much larger dynamic seismic loadings than permitted by current design practice criteria or predicted by the probabilistic risk assessment (PRA) methods and several proposed nonlinear methods of failure analysis.

Chen, W. P.; Onesto, A. T.; DeVita, V.

1987-02-01T23:59:59.000Z

373

TEX-A-SYST: Reducing the Risk of Ground Water Contamination by Improving Hazardous Waste Management  

E-Print Network [OSTI]

or unwanted chemicals can become a big problem. Some common disposal practices not only threaten ground water but also may be illegal. Small, unusable amounts of these products often wind up spilled, buried, dumped, or flushed onto a property. Minimizing... rules require that environmentally protective conditions be met before some disposal practices are permit- ted. Other previously common disposal prac- tices are now illegal because of their potential risks to human health and the environment. This new...

Harris, Bill L.; Hoffman, D.; Mazac Jr., F. J.; Kantor, A. S.

1997-08-29T23:59:59.000Z

374

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

375

Interim Report on Thermal Cycling Model Development for Representative Unisolable Piping Configurations (MRP-81)  

SciTech Connect (OSTI)

Thermal fatigue can lead to cracking in dead-ended branch lines attached to PWR primary coolant piping. This interim report describes the results of on-going research to provide an improved screening tool for identification of susceptible piping.

J. Keller, A. Bilanin

2002-11-30T23:59:59.000Z

376

Behaviour of GFRP Adhesive Pipe Joints Subjected to Pressure and Axial Loadings  

E-Print Network [OSTI]

The corrosion resistance of glass-fibre reinforced polymers (GFRPs) is a key advantage in pipeline applications. Adhesive bonded joints are often used in tensile resistant GFRP pipe systems and the behaviour of small-diameter GFRP tubular pipe...

Lees, Janet M.

2005-07-05T23:59:59.000Z

377

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

378

asbestos pipe-insulation removal: Topics by E-print Network  

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

A&M University - TxSpace Summary: PIPE INSULATION ECONOMIES Robert E. Schilling, P.E. Eaton Corporation Aurora, Ohio ABSTRACT Pipe Insulation Economies is a computer pro gram...

379

african-style kimberlite pipes: Topics by E-print Network  

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

A&M University - TxSpace Summary: PIPE INSULATION ECONOMIES Robert E. Schilling, P.E. Eaton Corporation Aurora, Ohio ABSTRACT Pipe Insulation Economies is a computer pro gram...

380

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

Note: This page contains sample records for the topic "flush water piping" 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

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

382

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

383

Assessing Equivalent Viscous Damping Using Piping System test Results  

SciTech Connect (OSTI)

The specification of damping for nuclear piping systems subject to seismic-induced motions has been the subject of many studies and much controversy. Damping estimation based on test data can be influenced by numerous factors, consequently leading to considerable scatter in damping estimates in the literature. At present, nuclear industry recommendations and nuclear regulatory guidance are not consistent on the treatment of damping for analysis of nuclear piping systems. Therefore, there is still a need to develop a more complete and consistent technical basis for specification of appropriate damping values for use in design and analysis. This paper summarizes the results of recent damping studies conducted at Brookhaven National Laboratory.

Nie, J.; Morante, R.

2010-07-18T23:59:59.000Z

384

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

385

Method for recovering wet buckled pipe  

SciTech Connect (OSTI)

This patent describes a method for severing a submerged pipeline setting on the sea floor. It comprises lowering a deflated lift bag from the water surface to a substantially straight segment of the pipeline; positioning the deflated lift bag under the substantially straight segment of the pipeline; inflating the deflated lift bag with liquid and raising a section of the pipeline off the sea floor; lowering a cutoff saw from the water surface to the raised section of the pipeline; clamping the cutoff saw to the raised section of the pipeline; and severing the pipeline by means of the cutoff saw.

Gray, D.A.; Gray, W.E. Jr.; Yemington, C.R.

1991-09-03T23:59:59.000Z

386

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

387

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

E-Print Network [OSTI]

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....WORTH, TEXAS ABSTRACT Heat pipe impact on our ability to dehumidify, protect, and improve our indoor air quality and save energy in our building systems is tremendous. Projects all over the world in hot and humid climates are using heat pipes in both...

Cooper, J. T.

1996-01-01T23:59:59.000Z

388

A study of contact angles in porous solids using heat pipes  

E-Print Network [OSTI]

Aviation and Space Conference, 1968, 655-658. 25 Brosens, P. , "Thermionic Converters with Heat Pipe Radiators, " Advances in Energy Conversion Engineering, 1967, 181-187. 33 26 Werner, R. W. , and G. A. Carlson, "Heat Pipe Radiator for Space Power... heat from a nuclear source to a thermionic generator (~29 , since thermionic generators are sensitive to high levels of radiation. Heat pipes have been suggested for controlling cryogenic boiloff in space (~30 . An investigation of using heat pipes...

Collins, Richard Clark

1971-01-01T23:59:59.000Z

389

Concentrator E-F11 water test  

SciTech Connect (OSTI)

This document is the Process Test Report for performing operation testing with water of the modified E-F11 concentrator in PUREX on water. The test was performed to determine the effects of the following concentrator modifications; routing concentrator off-gasses via the PUREX air tunnel to the main stack, blanking of condenser cooling water, blanking of process condensate route to a crib, restricting flow to steam tube bundles, and routing of steam condensate to TK-F12. The test was successful. Concentrator boil-off rates of 6--7 gpm were achieved while the overheads exited the PUREX plant in vapor form. With minor recommended modifications, this process is recommended for use in processing PUREX deactivation flush solutions and other miscellaneous wastes accumulated during the completion of the deactivation project.

Ethington, P.R.

1994-02-25T23:59:59.000Z

390

Should you have your water tested?  

E-Print Network [OSTI]

dissolved solids (TDS), corrosion index, and other parameters depending on proximity to potential sources guests have recurrent incidents of gastrointestinal illness. Household water plumbing contains lead pipes, fittings, or solder joints. You are buying a home and wish to assess the safety and quality of the existing

O'Laughlin, Jay

391

Minimize environmental impacts when replacing underground pipe  

SciTech Connect (OSTI)

A US refiner urgently needed to repair a 40-year-old oily-water sewer system without disrupting processing operations. Equally important, the refiner wanted to minimize soil and groundwater contamination. In this case history, the refiner elected to use an alternative method--trenchless rehabilitation--to make required underground repairs.

Miller, L.R. [Ashland Petroleum Co., Catlettsburg, KY (United States); Kroll, T.R. [Insituform Technologies, Inc., Memphis, TN (United States)

1997-02-01T23:59:59.000Z

392

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

393

PIPE2: A Tool for the Performance Evaluation of Generalised Stochastic Petri Nets  

E-Print Network [OSTI]

PIPE2: A Tool for the Performance Evaluation of Generalised Stochastic Petri Nets Nicholas J an overview of Platform­Independent Petri Net Editor 2 (PIPE2 ), an open­source tool that sup­ ports the design and analysis of Generalised Stochastic Petri Net (GSPN) models. PIPE2 's extensible design enables

Imperial College, London

394

Solidification pipes: from solder pots to igneous rocks M. Stewart Siua  

E-Print Network [OSTI]

Solidification pipes: from solder pots to igneous rocks M. Stewart Siua and Dmitry Budkerb resolidification. We use a simple model to describe the shape of the pipe and compare it with experimental results in volume of thallium during solidification. Such formation is sometimes known as "pipe" in metallurgy [2

Pines, Alexander

395

Field of Pipe Dreams: Minimizing Maintenance Cost for Hand-Moved  

E-Print Network [OSTI]

Field of Pipe Dreams: Minimizing Maintenance Cost for Hand-Moved Irrigation Systems February 6, 2006 1 #12;Page 2 of 12 Control #23 Contents 1 Field and pipe set layout 4 2 Pressure loss 4 2 uniformity requirement. We define `maintenance time' provisionally to be the number of 20-meter pipes

Morrow, James A.

396

Digital in-line holography in thick optical systems: application to visualization in pipes  

E-Print Network [OSTI]

Digital in-line holography in thick optical systems: application to visualization in pipes N@coria.fr In this paper we apply digital in-line holography to image opaque objects through a thick plano-concave pipe to deal with various pipe shape and thickness and compensates for the lack of versatility of classical DIH

Paris-Sud XI, Université de

397

Aging of HDPE Pipes Exposed to Diesel Lubricant Amelia H. U. Torres1  

E-Print Network [OSTI]

Aging of HDPE Pipes Exposed to Diesel Lubricant Amelia H. U. Torres1 , José R. M. d'Almeida1 behavior of high-density polyethylene pipes by exposure to a diesel lubricant were investigated the analysis performed, physical aging was identified as the aging process occurring when the HDPE pipes came

Paris-Sud XI, Université de

398

1 Copyright 2012 by ASME Proceedings of the ASME 2012 Pressure Vessels & Piping Division Conference  

E-Print Network [OSTI]

1 Copyright © 2012 by ASME Proceedings of the ASME 2012 Pressure Vessels & Piping Division - DOUBLE PIPE - ORIFICE SYSTEM Arris S. TIJSSELING Department of Mathematics and Computer Science Eindhoven Acoustic resonance in a two-pipe system is simulated with four different models for the periodic excitation

Tijsseling, A.S.

399

Superconducting pipes and levitating magnets Yan Levin* and Felipe B. Rizzato  

E-Print Network [OSTI]

Superconducting pipes and levitating magnets Yan Levin* and Felipe B. Rizzato Instituto de Física consider the dynamics of a magnet falling coaxially through a superconducting pipe. Unlike the case of normal conducting pipes, in which the magnet quickly reaches the terminal velocity, inside

Levin, Yan

400

PHYSICAL REVIEW E 84, 016309 (2011) Simplifying the complexity of pipe flow  

E-Print Network [OSTI]

PHYSICAL REVIEW E 84, 016309 (2011) Simplifying the complexity of pipe flow Dwight Barkley 2011; revised manuscript received 19 May 2011; published 15 July 2011) Transitional pipe flow, reproduces almost all large-scale features of transitional pipe flow. In particular, it captures metastable

Barkley, Dwight

Note: This page contains sample records for the topic "flush water piping" 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

Seminaire Lotharingien de Combinatoire 58 (2008), Article B58e DUALITY OF ANTIDIAGONALS AND PIPE DREAMS  

E-Print Network [OSTI]

S??eminaire Lotharingien de Combinatoire 58 (2008), Article B58e DUALITY OF ANTIDIAGONALS AND PIPE] for the Schubert poly­ nomial Sw are stated in terms of combinatorial objects called reduced pipe dreams, which can be thought of as subsets of an n ? n grid associated to w. Reduced pipe dreams are special cases of curve

Kuba, Markus

402

MNHMT2009-18484 INVESTIGATION OF NANOPILLAR WICKING CAPABILITIES FOR HEAT PIPES  

E-Print Network [OSTI]

MNHMT2009-18484 INVESTIGATION OF NANOPILLAR WICKING CAPABILITIES FOR HEAT PIPES APPLICATIONS Conan that increases the system's complexity and ultimately power consumption. Heat pipes are passive fluidic systems of the coolant in a heat pipe is done passively by means of a wicking structure that induces capillary flow from

Hidrovo, Carlos H.

403

Some Strange Numerical Solutions of the Non-stationary Navier-Stokes Equations in Pipes  

E-Print Network [OSTI]

Some Strange Numerical Solutions of the Non-stationary Navier-Stokes Equations in Pipes Bernd Newtonian uids in three- dimensional pipes with known steady laminar realizations is investigated-called pipe ow of incompressible Newtonian uids is well known as an old-established ob- ject of preference

Magdeburg, Universität

404

Seminaire Lotharingien de Combinatoire 58 (2008), Article B58e DUALITY OF ANTIDIAGONALS AND PIPE DREAMS  

E-Print Network [OSTI]

S´eminaire Lotharingien de Combinatoire 58 (2008), Article B58e DUALITY OF ANTIDIAGONALS AND PIPE] for the Schubert poly- nomial Sw are stated in terms of combinatorial objects called reduced pipe dreams, which can be thought of as subsets of an n ? n grid associated to w. Reduced pipe dreams are special cases of curve

Kuba, Markus

405

1 Imbedded Heat Pipe Prototype Modelling, Design, and Construction for Particle Ac-  

E-Print Network [OSTI]

1 Imbedded Heat Pipe Prototype Modelling, Design, and Construction for Particle Ac- celerator for predicting heat pipe performance has been generated and a design based on the results of that model has been implemented. A prototype heat pipe is under construction to test the validity of the model. The prototype

Cinabro, David

406

Page 1 of 1 Pipe Jacking, Auger Boring, Ramming, and Microtunneling  

E-Print Network [OSTI]

Page 1 of 1 Track D Pipe Jacking, Auger Boring, Ramming, and Microtunneling Monday, January 27, 2014 Hilton Americas, Houston, Texas ­ Room 329 7:30 AM Registration 8:15 Pipe Jacking Principles ­ Main considerations for pipe jacking and utility tunneling projects. Terry McArthur, P.E., HDR, Inc. 9

Huang, Haiying

407

Distinct large-scale turbulent-laminar states in transitional pipe flow  

E-Print Network [OSTI]

Distinct large-scale turbulent-laminar states in transitional pipe flow David Moxey1 and Dwight) When fluid flows through a channel, pipe, or duct, there are two basic forms of motion: smooth laminar numerical computations in pipes of variable lengths up to 125 diameters to investigate the nature of transi

Barkley, Dwight

408

RESIDUAL STRESS DISTRIBUTIONS FOR MULTI-PASS WELDS IN PRESSURE VESSEL AND PIPING COMPONENTS  

E-Print Network [OSTI]

RESIDUAL STRESS DISTRIBUTIONS FOR MULTI-PASS WELDS IN PRESSURE VESSEL AND PIPING COMPONENTS distributions in common pressure vessel and piping components is generated by using the multi-pass finite-walled pipes with various radius to thickness ratios. Both single- and double-V weld joints are investigated

Michaleris, Panagiotis

409

Compiling functional pipe/stream abstractions into conventional programs: Software Pipelines  

E-Print Network [OSTI]

Compiling functional pipe/stream abstractions into conventional programs: Software Pipelines with these technques and aware of the implementation of infinite stream/pipe abstractions in Lisp, Scheme the stream/pipe abstraction may be used, in principle, even by those who allege that all practical programs

Fateman, Richard J.

410

Design of Light Pipe for an Active Target in the Blowfish Detector Array  

E-Print Network [OSTI]

Design of Light Pipe for an Active Target in the Blowfish Detector Array Michael Barnett Jennifer of Saskatchewan August 30, 2004 1 Introduction This report outlines the development of a light pipe for an active target in the Blowfish array at the High Energy Gamma Source at Duke University. The light pipe

Saskatchewan, University of

411

Piping Upthe Shock Waves When Bradford Sturtevant,professor of and executive  

E-Print Network [OSTI]

Research Piping Upthe Shock Waves When Bradford Sturtevant,professor of and executive officerfor aeronautics,takes thelid off his "pipes," Guggen- heim Laboratory becomes the noisiestplaceon campus. Despite it might appear that an open-ended pipe allows the energy to dissipatetooquicklyintothe atmosphereto

Bruck, Jehoshua (Shuki)

412

Hardy-Cross Method & Program For every node in a pipe network  

E-Print Network [OSTI]

Hardy-Cross Method & Program · For every node in a pipe network: · Since a node pressure must & Program (2) #12;Example 1-13 (cont.) Hardy-Crosssubroutine ...loops ...pipes ...guess Qloop(L1); Note l1 new pipe in it) Loops closed with Reference h=z=0 #12;Example 1-13 (cont.) T N

Kostic, Milivoje M.

413

Genetic evidence for extreme polyandry and extraordinary sex-role reversal in a pipe sh  

E-Print Network [OSTI]

Genetic evidence for extreme polyandry and extraordinary sex-role reversal in a pipe sh Adam G, USA Due to the phenomenon of male pregnancy, the ¢sh family Syngnathidae (seahorses and pipe¢shes) has assemblage of pipe¢shes or seahorses in order to demonstrate conclusively that sexual selection acts most

Avise, John

414

Interface instabilities during displacements of two miscible fluids in a vertical pipe  

E-Print Network [OSTI]

Interface instabilities during displacements of two miscible fluids in a vertical pipe J. Scoffoni vertical displacement of one miscible fluid by another in a vertical pipe at sufficiently high velocities. INTRODUCTION The hydrodynamic stability of two-phase flow in pipes and channels has been the subject of many

Lajeunesse, Eric

415

Compiling functional pipe/stream abstractions into conventional programs: Software Pipelines  

E-Print Network [OSTI]

Compiling functional pipe/stream abstractions into conventional programs: Software Pipelines as a silly functional programming trick. We show how the stream/pipe abstraction can sometimes be converted to many students is streams (in the language of Abelson/Sussman [1]) or pipes (in the language of Norvig

Fateman, Richard J.

416

International Kimberlite Conference Long Abstract 1 ECLOGITES FROM THE GRIB KIMBERLITE PIPE,  

E-Print Network [OSTI]

8th International Kimberlite Conference Long Abstract 1 ECLOGITES FROM THE GRIB KIMBERLITE PIPE kimberlite pipe, Grib, in the Arkhangelsk Province of Russia. GEOLOGY OF THE ARKHANGELSK REGION The East is mostly in the form of sub-volcanic pipes (diatremes), together with some sills and dikes (Sinitsin & Grib

Taylor, Lawrence A.

417

International Heat Pipe Conference (13th IHPC), Shanghai, China, September 21-25, 2004.  

E-Print Network [OSTI]

13th International Heat Pipe Conference (13th IHPC), Shanghai, China, September 21-25, 2004. 678$&7 AlSiC based flat thin heat pipe prototypes (143.8 x 80.8 x 5 mm3 outer dimensions) are manufactured are carried out. The temperature profiles over the entire heat pipe are measured by means of infrared (IR

Khandekar, Sameer

418

4/3 law of Granular Particles Flowing through a Vertical Pipe  

E-Print Network [OSTI]

4/3 law of Granular Particles Flowing through a Vertical Pipe Osamu Moriyama, Naoya Kuroiwa­01, Japan (Received June 16, 1997) Density waves of granular material (sand) flowing through a vertical pipe have been investigated. Clear density waves emerge when the cock attached to bottom end of the pipe

Hayakawa, Hisao

419

Visual Pipe Mapping with a Fisheye Camera Peter Hansen, Hatem Alismail, Peter Rander and Brett Browning  

E-Print Network [OSTI]

Visual Pipe Mapping with a Fisheye Camera Peter Hansen, Hatem Alismail, Peter Rander and Brett made herein are solely the responsibility of the authors. #12;Keywords: Robotics, computer vision, pipe in pipes such as those found in Liquified Natural Gas (LNG) production. A forward facing, fisheye camera

420

WICKING OPTIMIZATION FOR THERMAL COOLING -WITH A TITANIUM BASED HEAT PIPE SYSTEM  

E-Print Network [OSTI]

WICKING OPTIMIZATION FOR THERMAL COOLING -WITH A TITANIUM BASED HEAT PIPE SYSTEM C. Ding1* , P for a proposed flat heat pipe system. This unique bitextured titania structure (BTS) provides a suprerhydrophilic based flat heat pipe is proposed to integrate the BTS wicks and study the concept of this titanium based

MacDonald, Noel C.

Note: This page contains sample records for the topic "flush water piping" 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

PIPE2: A Tool for the Performance Evaluation of Generalised Stochastic Petri Nets  

E-Print Network [OSTI]

PIPE2: A Tool for the Performance Evaluation of Generalised Stochastic Petri Nets Nicholas J an overview of Platform-Independent Petri Net Editor 2 (PIPE2), an open-source tool that sup- ports the design and analysis of Generalised Stochastic Petri Net (GSPN) models. PIPE2's extensible design enables de- velopers

Knottenbelt, William J.

422

FLAT PLATE HEAT PIPES: FROM OBSERVATIONS TO THE MODELING OF THE CAPILLARY STUCTURE  

E-Print Network [OSTI]

1 FLAT PLATE HEAT PIPES: FROM OBSERVATIONS TO THE MODELING OF THE CAPILLARY STUCTURE Frédéric ABSTRACT This paper presents a synthesis of observations made inside six different flat plate heat pipes to estimate the performance of the heat pipe in a real application with several electronic components

Paris-Sud XI, Université de

423

PIPE CLEANER TOWERS ACTIVITY Contributors: Dr. Laura Bottomley & Heather Smolensky Page 1 of 2  

E-Print Network [OSTI]

PIPE CLEANER TOWERS ACTIVITY Contributors: Dr. Laura Bottomley & Heather Smolensky Page 1 of 2 Box of limited resources and constraints Teamwork Project Planning Materials: Each group will need: 15 Pipe that the ends of the pipe cleaner wires may be sharp. Introduction: Use the information from the section titled

424

BEAM COUPLING IMPEDANCE STUDIES ON THE LHC FP420 MULTI-POCKET BEAM PIPE PROTOTYPE  

E-Print Network [OSTI]

BEAM COUPLING IMPEDANCE STUDIES ON THE LHC FP420 MULTI-POCKET BEAM PIPE PROTOTYPE F. Roncarolo , R LHC beam pipe in which two pockets hosting the detectors introduce an abrupt cross-section variation of the pipe. During the FP420 proposed operation, each station is moved towards the beam as close as 5 mm ( 15

425

The sound power output of a monopole source in a cylindrical pipe containing area discontinuities  

E-Print Network [OSTI]

The sound power output of a monopole source in a cylindrical pipe containing area discontinuities W placed close to a pipe discontinuity. It is found that while the sound power of a monopole source in free pipe is constant in the plane wave region. A sharp increase in sound power is then seen to occur when

Boyer, Edmond

426

Exploration of Process Interaction in Operating Systems: A Pipe-Fork Simulator  

E-Print Network [OSTI]

Exploration of Process Interaction in Operating Systems: A Pipe-Fork Simulator Steven Robbins- structors to trace through a variety of programs and to show how the processes and pipes are connected scheduling affect the configuration of the processes and pipes as well as the output of the program. Students

Robbins, Steven

427

Plant Science Bulletin 53(2) 2007 The Organ Pipe Cactus. Yetman, David A. 2006.  

E-Print Network [OSTI]

74 Plant Science Bulletin 53(2) 2007 The Organ Pipe Cactus. Yetman, David A. 2006. University and succinct account of the organ pipe cactus (Stenocereus thurberi), especially its interactions with humans ­ he undoubtedly does know intimately. The organ pipe is a 1-10 metre tall cactus

Gorelick, Root

428

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

E-Print Network [OSTI]

Thermal response of a flat heat pipe sandwich structure to a localized heat flux G. Carbajal a , C The temperature distribution across a flat heat pipe sandwich structure, subjected to an intense localized thermal to the evaporator side of the flat heat pipe, while the condenser side was cooled via natural convective

Wadley, Haydn

429

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

E-Print Network [OSTI]

M. Durand Structure of optimal pipe networks subject to a global constraint Marc Durand Mati`ere et textdate; Accepted textdate; Published textdate) Abstract The structure of pipe networks minimizing the total energy dissipation rate is studied analytically. Among all the possible pipe networks that can

Paris-Sud XI, Université de

430

Interfacial Mixing in Viscous Pipe Flows Interim report to Imperial Oil  

E-Print Network [OSTI]

Interfacial Mixing in Viscous Pipe Flows Interim report to Imperial Oil D. Van Vliet and B. R. Introduction The cost of energy to pump oil through a pipe line is greatly reduced if the ow is not turbulent but laminar. This is because turbulence results in greater energy losses and drag. Although new pipe lines

Sutherland, Bruce

431

1. INTRODUCTION State of the art pipe inspection devices are generally  

E-Print Network [OSTI]

1. INTRODUCTION State of the art pipe inspection devices are generally four wheeled, camera is trying to upset the stability of the tail of the carriage. These carriages are fed into a pipe on the carriage are a TV camera and lights which illu- minate the inside pipe wall. The signals from the TV camera

Bradbeer, Robin Sarah

432

Boundary-trapped, inhalant siphon, and drain flows: Pipe entry revisited numerically  

E-Print Network [OSTI]

Boundary-trapped, inhalant siphon, and drain flows: Pipe entry revisited numerically Peter A just inside these inlets have relied on solutions to pipe entry that posit uniform entrance velocity. I for 0.01 #Re #2000.Re is the pipe Reynolds number, the product of mean capillary flow speed

Jumars, Pete

433

Influence of Beam Pipe Waist on Higher Order Mode Shunt Impedances  

E-Print Network [OSTI]

Influence of Beam Pipe Waist on Higher Order Mode Shunt Impedances Dirk Hecht, Hans-Walter Glock disturbances the insertion of an additional waist in the beam pipe between neighbouring 9 cell cavities has. Waist with radius rb in the beam pipe between neighbouring cavities In our simulations the radius

434

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

E-Print Network [OSTI]

M. Durand Structure of optimal pipe networks subject to a global constraint Marc Durand Mati??ere et textdate; Accepted textdate; Published textdate) Abstract The structure of pipe networks minimizing the total energy dissipation rate is studied analytically. Among all the possible pipe networks that can

435

SOUTHEASTERN NATURALIST2003 2(4):575590 USING GROUND-PLACED PVC PIPES TO  

E-Print Network [OSTI]

SOUTHEASTERN NATURALIST2003 2(4):575­590 USING GROUND-PLACED PVC PIPES TO MONITOR HYLID TREEFROGS sampled a population of two species of hylid treefrogs using 90 vertical ground-placed PVC pipes of 3 a combination of the effects of these variables, acting either cumulatively or synergistically. PVC pipes

Johnson, Matthew

436

Towards a Visual Perception System for Pipe Inspection: Monocular Visual Odometry  

E-Print Network [OSTI]

, pipe crawler, visual odometry #12;Abstract Liquid Natural Gas (LNG) processing facilities contain large in LNG pipes include Magnetic Flux Leakage (MFL), radiography (X-rays), and ultrasound among others wall thickness over time the rate of corrosion can be estimated. For LNG pipes, unlike large mainstream

437

Flow of fractal fluid in pipes: Non-integer dimensional space Vasily E. Tarasov  

E-Print Network [OSTI]

Flow of fractal fluid in pipes: Non-integer dimensional space approach Vasily E. Tarasov of an incompressible viscous fractal fluid in the pipe. Fractal fluid is described as a continuum in non solution for steady flow of fractal fluid in a pipe and corresponding fractal fluid discharge are suggested

Tarasov, Vasily E.

438

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

439

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

440

Entirely passive heat pipe apparatus capable of operating against gravity  

DOE Patents [OSTI]

The disclosure is directed to an entirely passive heat pipe apparatus capable of operating against gravity for vertical distances in the order of 3 to 7 meters and more. A return conduit into which an inert gas is introduced is used to lower the specific density of the working fluid so that it may be returned a greater vertical distance from condenser to evaporator.

Koenig, Daniel R. (Santa Fe, NM)

1982-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "flush water piping" 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

Ultrasonic multi-skip tomography for pipe inspection  

SciTech Connect (OSTI)

The inspection of wall loss corrosion is difficult at pipe supports due to limited accessibility. The recently developed ultrasonic Multi-Skip screening technique is suitable for this problem. The method employs ultrasonic transducers in a pitch-catch geometry positioned on opposite sides of the pipe support. Shear waves are transmitted in the axial direction within the pipe wall, reflecting multiple times between the inner and outer surfaces before reaching the receivers. Along this path, the signals accumulate information on the integral wall thickness (e.g., via variations in travel time). The method is very sensitive in detecting the presence of wall loss, but it is difficult to quantify both the extent and depth of the loss. Multi-skip tomography has been developed to reconstruct the wall thickness profile along the axial direction of the pipe. The method uses model-based full wave field inversion; this consists of a forward model for predicting the measured wave field and an iterative process that compares the predicted and measured wave fields and minimizes the differences with respect to the model parameters (i.e., the wall thickness profile). Experimental results are very encouraging. Various defects (slot and flat bottom hole) are reconstructed using the tomographic inversion. The general shape and width are well recovered. The current sizing accuracy is in the order of 1 mm.

Volker, Arno; Zon, Tim van [TNO, Stieltjesweg 1, P.O. Box 155 2600 AD Delft (Netherlands)

2014-02-18T23:59:59.000Z

442

Determination of petroleum pipe scale solubility in simulated lung fluid  

E-Print Network [OSTI]

??????. 18 13 Teflon? filter holder (unassembled and assembled)????????.... 21 14 Dissolution experiment setup?????????????????.... 22 15 Curve showing the dissolution profile of barium released from scale... done to determine the solubility of pipe scale in human gastrointestinal fluid (Raabe 1996). Through this work and others, it has been shown that barium sulfate scale is extremely insoluble, even in harsh acidic environments. Based on these results...

Cezeaux, Jason Roderick

2005-08-29T23:59:59.000Z

443

Sensitivity of piping seismic responses to input factors  

SciTech Connect (OSTI)

This report summarizes the sensitivity of peak dynamic seismic responses to input parameters. The responses have been modeled and calculated for the Zion Unit 1 plant as part of a seismic probabilistic risk assessment (PRA) performed by the US NRC Seismic Safety Margins Research Program (SSMRP). The SSMRP was supported by the US NRC Office of Nuclear Regulatory Research. Two sensitivity topics motivated the study. The first is the sensitivity of piping response to the mean value of piping damping. The second is the sensitivity of all the responses to the earthquake and model input parameters including soil, structure and piping parameters; this information is required for another study, the sensitivity of the plant system response (in terms of risk) to these dynamic input parameters and to other input factors. We evaluate the response sensitivities by performing a linear regression analysis (LRA) of the computer code SMACS. With SMACS we have a detailed model of the Zion plant and of the important dynamic processes in the soil, structures and piping systems. The qualitative results change with the location of the individual response. Different responses are in locations where the many potential influences have different effectiveness. The results give an overview of the complexity of the seismic dyanmic response of a plant. Within the diversity trends are evident in the influences of the input variables on the responses.

O'Connell, W.J.

1985-05-01T23:59:59.000Z

444

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

445

ACCIDENT PREVENTION SIGNS, TAGS, LABELS, SIGNALS, PIPING SYSTEM IDENTIFICATION AND  

E-Print Network [OSTI]

EM 385-1-1 XX Sep 13 i Section 8 ACCIDENT PREVENTION SIGNS, TAGS, LABELS, SIGNALS, PIPING SYSTEM............................................................8-13 Tables: 8-1 Accident Prevention Sign Requirements..........................8-17 8-2 Accident.......................................8-24 8-9 Accident Prevention Tags.............................................8-25 #12;EM 385-1-1 XX

US Army Corps of Engineers

446

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

447

Flow Analysis on a Limited Volume Chilled Water System  

SciTech Connect (OSTI)

LANL Currently has a limited volume chilled water system for use in a glove box, but the system needs to be updated. Before we start building our new system, a flow analysis is needed to ensure that there are no high flow rates, extreme pressures, or any other hazards involved in the system. In this project the piping system is extremely important to us because it directly affects the overall design of the entire system. The primary components necessary for the chilled water piping system are shown in the design. They include the pipes themselves (perhaps of more than one diameter), the various fitting used to connect the individual pipes to form the desired system, the flow rate control devices (valves), and the pumps that add energy to the fluid. Even the most simple pipe systems are actually quite complex when they are viewed in terms of rigorous analytical considerations. I used an 'exact' analysis and dimensional analysis considerations combined with experimental results for this project. When 'real-world' effects are important (such as viscous effects in pipe flows), it is often difficult or impossible to use only theoretical methods to obtain the desired results. A judicious combination of experimental data with theoretical considerations and dimensional analysis are needed in order to reduce risks to an acceptable level.

Zheng, Lin [Los Alamos National Laboratory

2012-07-31T23:59:59.000Z

448

Heat Pipe Solar Receiver Development Activities at Sandia National Laboratories  

SciTech Connect (OSTI)

Over the past decade, Sandia National Laboratories has been involved in the development of receivers to transfer energy from the focus of a parabolic dish concentrator to the heater tubes of a Stirling engine. Through the isothermal evaporation and condensation of sodium. a heat-pipe receiver can efficiently transfer energy to an engine's working fluid and compensate for irregularities in the flux distribution that is delivered by the concentrator. The operation of the heat pipe is completely passive because the liquid sodium is distributed over the solar-heated surface by capillary pumping provided by a wick structure. Tests have shown that using a heat pipe can boost the system performance by twenty percent when compared to directly illuminating the engine heater tubes. Designing heat pipe solar receivers has presented several challenges. The relatively large area ({approximately}0.2 m{sup 2}) of the receiver surface makes it difficult to design a wick that can continuously provide liquid sodium to all regions of the heated surface. Selecting a wick structure with smaller pores will improve capillary pumping capabilities of the wick, but the small pores will restrict the flow of liquid and generate high pressure drops. Selecting a wick that is comprised of very tine filaments can increase the permeability of the wick and thereby reduce flow losses, however, the fine wick structure is more susceptible to corrosion and mechanical damage. This paper provides a comprehensive review of the issues encountered in the design of heat pipe solar receivers and solutions to problems that have arisen. Topics include: flow characterization in the receiver, the design of wick systems. the minimization of corrosion and dissolution of metals in sodium systems. and the prevention of mechanical failure in high porosity wick structures.

Adkins, D.R.; Andraka, C.E.; Moreno, J.B.; Moss, T.A.; Rawlinson, K.S.; Showalter, S.K.

1999-01-08T23:59:59.000Z

449

The effect on oil recovery of water flooding at pressures above and below the bubble point  

E-Print Network [OSTI]

if the reservoir is water flooded in the presence of a {9) {10) free gas phase. Guerrero and Kennedy conducted a study using Woodbine sand and East Texas crude oil on the effect of surface-active agents on oil recovery by water flooding, They made several f.... Once the gas saturation increases to a value such that its mo- bility is as great as the mobility ef the otl it no longer can act as a blocking agent. , but probably the water is still forced to flush some of the more tortuous channels which normally...

Bass, Daniel Materson

1955-01-01T23:59:59.000Z

450

Recent evaluations of crack-opening-area in circumferentially cracked pipes  

SciTech Connect (OSTI)

Leak-before-break (LBB) analyses for circumferentially cracked pipes are currently being conducted in the nuclear industry to justify elimination of pipe whip restraints and jet shields which are present because of the expected dynamic effects from pipe rupture. The application of the LBB methodology frequently requires calculation of leak rates. The leak rates depend on the crack-opening area of the through-wall crack in the pipe. In addition to LBB analyses which assume a hypothetical flaw size, there is also interest in the integrity of actual leaking cracks corresponding to current leakage detection requirements in NRC Regulatory Guide 1.45, or for assessing temporary repair of Class 2 and 3 pipes that have leaks as are being evaluated in ASME Section XI. The objectives of this study were to review, evaluate, and refine current predictive models for performing crack-opening-area analyses of circumferentially cracked pipes. The results from twenty-five full-scale pipe fracture experiments, conducted in the Degraded Piping Program, the International Piping Integrity Research Group Program, and the Short Cracks in Piping and Piping Welds Program, were used to verify the analytical models. Standard statistical analyses were performed to assess used to verify the analytical models. Standard statistical analyses were performed to assess quantitatively the accuracy of the predictive models. The evaluation also involved finite element analyses for determining the crack-opening profile often needed to perform leak-rate calculations.

Rahman, S.; Brust, F.; Ghadiali, N.; Wilkowski, G.; Miura, N.

1997-04-01T23:59:59.000Z

451

High thermal power density heat transfer apparatus providing electrical isolation at high temperature using heat pipes  

SciTech Connect (OSTI)

This invention is directed to transferring heat from an extremely high temperature source to an electrically isolated lower temperature receiver. The invention is particularly concerned with supplying thermal power to a thermionic converter from a nuclear reactor with electric isolation. Heat from a high temperature heat pipe is transferred through a vacuum or a gap filled with electrically nonconducting gas to a cooler heat pipe. The heat pipe is used to cool the nuclear reactor while the heat pipe is connected thermally and electrically to a thermionic converter. If the receiver requires greater thermal power density, geometries are used with larger heat pipe areas for transmitting and receiving energy than the area for conducting the heat to the thermionic converter. In this way the heat pipe capability for increasing thermal power densities compensates for the comparatively low thermal power densities through the electrically nonconducting gap between the two heat pipes.

Morris, J. F.

1985-03-19T23:59:59.000Z

452

Time scales and FSI in unsteady liquid-filled pipe flow Arris S Tijsseling Alan E Vardy  

E-Print Network [OSTI]

Time scales and FSI in unsteady liquid-filled pipe flow Arris S Tijsseling Alan E Vardy Department are used to classify unsteady flow in liquid-filled pipes. Seven types of pipe flow are distinguished of vibration of liquid and pipe are excited. The complexity of mathematical models describing the phenomena

Eindhoven, Technische Universiteit

453

878 JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 19, NO. 4, AUGUST 2010 A Flat Heat Pipe Architecture Based on  

E-Print Network [OSTI]

878 JOURNAL OF MICROELECTROMECHANICAL SYSTEMS, VOL. 19, NO. 4, AUGUST 2010 A Flat Heat Pipe pipe is developed for Thermal Ground Plane (TGP) appli- cations. The Ti-based heat pipe architecture chamber. The scalable heat pipes' flat geometry facilitates contact with planar heat sources

MacDonald, Noel C.

454

Natural gas transport by plastic pipes. (Latest citations from the EI Compendex*plus database). Published Search  

SciTech Connect (OSTI)

The bibliography contains citations concerning the use of plastic piping to transport natural gas or liquid propane gas. The interaction between gas odorants and plastic pipe, the effects of aging on plastic pipe used to transport gas, and pipe failure analyses are examined. Bending, joining, and repair methods are discussed. Composite reinforced plastic pipes and plastic coated pipes are considered. Polyethylene and epoxy composites are among the materials discussed. Gas main upgrading projects that replaced old pipes with plastic ones are briefly cited. (Contains a minimum of 89 citations and includes a subject term index and title list.)

Not Available

1994-05-01T23:59:59.000Z

455

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.

456

Double Shell Tank (DST) Transfer Piping Subsystem Specification  

SciTech Connect (OSTI)

This specification establishes the performance requirements and provides references to the requisite codes and standards to be applied during design of the Double-Shell Tank (DST) Transfer Piping Subsystem that supports the first phase of Waste Feed Delivery. This specification establishes the performance requirements and provides references to the requisite codes and standards to be applied during design of the Double-Shell Tank (DST) Transfer Piping Subsystem that supports the first phase of waste feed delivery. This subsystem transfers waste between transfer-associated structures (pits) and to the River Protection Project (RPP) Privatization Contractor Facility where it will be processed into an immobilized waste form. This specification is intended to be the basis for new projects/installations (W-521, etc.). This specification is not intended to retroactively affect previously established project design criteria without specific direction by the program.

GRAVES, C.E.

2000-03-22T23:59:59.000Z

457

Impedance matched joined drill pipe for improved acoustic transmission  

DOE Patents [OSTI]

An impedance matched jointed drill pipe for improved acoustic transmission. A passive means and method that maximizes the amplitude and minimize the temporal dispersion of acoustic signals that are sent through a drill string, for use in a measurement while drilling telemetry system. The improvement in signal transmission is accomplished by replacing the standard joints in a drill string with joints constructed of a material that is impedance matched acoustically to the end of the drill pipe to which it is connected. Provides improvement in the measurement while drilling technique which can be utilized for well logging, directional drilling, and drilling dynamics, as well as gamma-ray spectroscopy while drilling post shot boreholes, such as utilized in drilling post shot boreholes.

Moss, William C. (San Mateo, CA)

2000-01-01T23:59:59.000Z

458

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

459

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

460

2MASS wide field extinction maps - I. The Pipe nebula  

E-Print Network [OSTI]

We present a 8 deg x 6 deg, high resolution extinction map of the Pipe nebula using 4.5 million stars from the Two Micron All Sky Survey (2MASS) point source catalog. The use of NICER, a robust and optimal technique to map the dust column density, allows us to detect a Av = 0.5 mag extinction at a 3-sigma level with a 1 arcmin resolution. We find for the Pipe nebula a normal reddening law, E(J-H) = (1.85 +/- 0.15) E(H-K). We measure the cloud distance using Hipparchos and Tycho parallaxes, and obtain ~130 pc. This, together with the total estimated mass, 10^4 Msun, makes the Pipe the closest massive cloud complex to Earth. We compare the NICER extinction map to the NANTEN 12CO observations and derive with unprecedented accuracy the relationship between the near-infrared extinction and the 12CO column density and hence (indirectly) the 12CO X-factor, that we estimate to be 2.91 10^20 cm^-2 K^-1 km^-1 s in the range Av Pipe field. This represents a significant increase of the known numbers of such stars in the Galaxy. Our analysis confirms the power and simplicity of the color excess technique to study molecular clouds. The comparison with the NANTEN 12CO data corroborates the insensitivity of CO observations to low column densities (up to approximately 2 mag in Av), and shows also an irreducible uncertainty in the dust-CO correlation of about 1 mag of visual extinction.

Marco Lombardi; Joao Alves; Charles J. Lada

2006-06-27T23:59:59.000Z

Note: This page contains sample records for the topic "flush water piping" 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

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

462

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

463

How to reduce sigma in offshore pipe fabrications  

SciTech Connect (OSTI)

The use of stainless steel for offshore oil and gas applications has increased dramatically over the last 20 years. Stainless steels fall into a number of categories depending on the composition and microstructure formed after heat treatment. Selection of pipe materials for offshore applications is dependent on the product to be carried. Austenitic and ferritic/austenitic (duplex) stainless steels are commonly used for process and utility piping systems offshore, whereas martensitic and ferritic are restricted to specific applications. Reference to sigma in offshore welding specifications has been mixed. Previously, the identification of sigma was wither not quoted or stated as being not permitted. However, achieving zero sigma content in duplex stainless steel welds and HAZs is questionable, particularly in steels and weld metals having a high chromium and molybdenum content. In the real world, how does one ensure that production welds performed offshore are free of sigma--or have a limited volume fraction of it--without having to constantly monitor welder performance? This review examines the difficulties and controls required to limit the presence of sigma in austenitic and duplex weld metals and HAZs associated with offshore piping and pipeline systems. Materials described here are those manufactured using contemporary steel making processes.

Still, J.

1999-11-01T23:59:59.000Z

464

ESTIMATION OF THE TEMPERATURE RISE OF A MCU ACID STREAM PIPE IN NEAR PROXIMITY TO A SLUDGE STREAM PIPE  

SciTech Connect (OSTI)

Effluent streams from the Modular Caustic-Side Solvent Extraction Unit (MCU) will transfer to the tank farms and to the Defense Waste Processing Facility (DWPF). These streams will contain entrained solvent. A significant portion of the Strip Effluent (SE) pipeline (i.e., acid stream containing Isopar{reg_sign} L residues) length is within one inch of a sludge stream. Personnel envisioned the sludge stream temperature may reach 100 C during operation. The nearby SE stream may receive heat from the sludge stream and reach temperatures that may lead to flammability issues once the contents of the SE stream discharge into a larger reservoir. To this end, personnel used correlations from the literature to estimate the maximum temperature rise the SE stream may experience if the nearby sludge stream reaches boiling temperature. Several calculation methods were used to determine the temperature rise of the SE stream. One method considered a heat balance equation under steady state that employed correlation functions to estimate heat transfer rate. This method showed the maximum temperature of the acid stream (SE) may exceed 45 C when the nearby sludge stream is 80 C or higher. A second method used an effectiveness calculation used to predict the heat transfer rate in single pass heat exchanger. By envisioning the acid and sludge pipes as a parallel flow pipe-to-pipe heat exchanger, this method provides a conservative estimation of the maximum temperature rise. Assuming the contact area (i.e., the area over which the heat transfer occurs) is the whole pipe area, the results found by this method nearly matched the results found with the previous calculation method. It is recommended that the sludge stream be maintained below 80 C to minimize a flammable vapor hazard from occurring.

Fondeur, F; Michael Poirier, M; Samuel Fink, S

2007-07-12T23:59:59.000Z

465

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

466

Additional requirements for leak-before-break application to primary coolant piping in Belgium  

SciTech Connect (OSTI)

Leak-Before-Break (LBB) technology has not been applied in the first design of the seven Pressurized Water Reactors the Belgian utility is currently operating. The design basis of these plants required to consider the dynamic effects associated with the ruptures to be postulated in the high energy piping. The application of the LBB technology to the existing plants has been recently approved by the Belgian Safety Authorities but with a limitation to the primary coolant loop. LBB analysis has been initiated for the Doel 3 and Tihange 2 plants to allow the withdrawal of some of the reactor coolant pump snubbers at both plants and not reinstall some of the restraints after steam generator replacement at Doel 3. LBB analysis was also found beneficial to demonstrate the acceptability of the primary components and piping to the new conditions resulting from power uprating and stretch-out operation. LBB analysis has been subsequently performed on the primary coolant loop of the Tihange I plant and is currently being performed for the Doel 4 plant. Application of the LBB to the primary coolant loop is based in Belgium on the U.S. Nuclear Regulatory Commission requirements. However the Belgian Safety Authorities required some additional analyses and put some restrictions on the benefits of the LBB analysis to maintain the global safety of the plant at a sufficient level. This paper develops the main steps of the safety evaluation performed by the Belgian Safety Authorities for accepting the application of the LBB technology to existing plants and summarizes the requirements asked for in addition to the U.S. Nuclear Regulatory Commission rules.

Roussel, G. [AIB Vincotte Nuclear, Brussels (Belgium)

1997-04-01T23:59:59.000Z

467

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

468

Magnetic detection of underground pipe using timed-release marking droplets  

DOE Patents [OSTI]

A system 10 and method of detecting an underground pipe 12 injects magnetic marking droplets 16 into the underground pipe 12 which coat the inside of the pipe 12 and may be detected from aboveground by a magnetometer 28. The droplets 16 include a non-adhesive cover 32 which allows free flow thereof through the pipe 12, with the cover 32 being ablatable for the timed-release of a central core 30 containing magnetic particles 30a which adhere to the inside of the pipe 12 and are detectable from aboveground. The rate of ablation of the droplet covers 32 is selectively variable to control a free flowing incubation zone 12a for the droplets 16 and a subsequent deposition zone 12b in which the magnetic particles 30a are released for coating the pipe 12.

Powell, James R. (Shoreham, NY); Reich, Morris (Kew Garden Hills, NY)

1996-12-17T23:59:59.000Z

469

Magnetic detection of underground pipe using timed-release marking droplets  

DOE Patents [OSTI]

A system and method are disclosed of detecting an underground pipe by injecting magnetic marking droplets into the underground pipe which coat the inside of the pipe and may be detected from aboveground by a magnetometer. The droplets include a non-adhesive cover which allows free flow through the pipe, with the cover being ablatable for the timed-release of a central core containing magnetic particles which adhere to the inside of the pipe and are detectable from aboveground. The rate of ablation of the droplet covers is selectively variable to control a free flowing incubation zone for the droplets and a subsequent deposition zone in which the magnetic particles are released for coating the pipe. 6 figs.

Powell, J.R.; Reich, M.

1996-12-17T23:59:59.000Z

470

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

471

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

472

Synchronization of organ pipes by means of air flow coupling: experimental observations and modeling  

E-Print Network [OSTI]

We report measurements on two organ pipes positioned side by side. We investigate two different questions. First, the mutual influence of two pipes with different pitch. In analogy to the coupling of two nonlinear oscillators with feedback, one observes a frequency locking, which can be explained by synchronization theory. Second, we measure the dependence of the frequency of the signals emitted by two mutually detuned pipes with varying distance between the pipes. The spectrum shows a broad ``hump'' structure, not found for coupled oscillators. This indicates a complicated hydrodynamical coupling of the two jets creating the acoustic field when exiting from the pipe mouth. We interpret our acoustic measurements with a model for the flow which exits from the flues of the pipes.

Abel, M; Gerhard-Multhaupt, R

2005-01-01T23:59:59.000Z

473

Sodium Based Heat Pipe Modules for Space Reactor Concepts: Stainless Steel SAFE-100 Core  

SciTech Connect (OSTI)

A heat pipe cooled reactor is one of several candidate reactor cores being considered for advanced space power and propulsion systems to support future space exploration applications. Long life heat pipe modules, with designs verified through a combination of theoretical analysis and experimental lifetime evaluations, would be necessary to establish the viability of any of these candidates, including the heat pipe reactor option. A hardware-based program was initiated to establish the infrastructure necessary to build heat pipe modules. This effort, initiated by Los Alamos National Laboratory and referred to as the Safe Affordable Fission Engine (SAFE) project, set out to fabricate and perform non-nuclear testing on a modular heat pipe reactor prototype that can provide 100-kWt from the core to an energy conversion system at 700 deg. C. Prototypic heat pipe hardware was designed, fabricated, filled, closed-out and acceptance tested. (authors)

Martin, James J.; Reid, Robert S. [Marshall Space Flight Center, National Aeronautics and Space Administration, Huntsville, Alabama, 35812 (United States)

2004-07-01T23:59:59.000Z

474

Pipe inspection using the BTX-II. Innovative technology summary report  

SciTech Connect (OSTI)

The US Department of Energy (DOE) continually seeks safer and more cost-effective remediation technologies for use in the decontamination and decommissioning (D and D) of nuclear facilities. In several of the buildings at the Fernald Site, there is piping that was used to transport process materials. As the demolition of these buildings occur, disposal of this piping has become a costly issue. Currently, all process piping is cut into ten-foot or less sections, the ends of the piping are wrapped and taped to prevent the release of any potential contaminants into the air, and the piping is placed in roll off boxes for eventual repackaging and shipment to the Nevada Test Site (NTS) for disposal. Alternatives that allow for the onsite disposal of process piping are greatly desired due to the potential for dramatic savings in current offsite disposal costs. No means is currently employed to allow for the adequate inspection of the interior of piping, and consequently, process piping has been assumed to be internally contaminated and thus routinely disposed of at NTS. The BTX-II system incorporates a high-resolution micro color camera with lightheads, cabling, a monitor, and a video recorder. The complete probe is capable of inspecting pipes with an internal diameter (ID) as small as 1.4 inches. By using readily interchangeable lightheads, the same system is capable of inspecting piping up to 24 inches in ID. The original development of the BTX system was for inspection of boiler tubes and small diameter pipes for build-up, pitting, and corrosion. However, the system is well suited for inspecting the interior of most types of piping and other small, confined areas. The report describes the technology, its performance, uses, cost, regulatory and policy issues, and lessons learned.

NONE

1999-05-01T23:59:59.000Z

475

Cross-sectional Views of 90/90 Pipe Without/With a Weld  

E-Print Network [OSTI]

Cross-sectional Views of 90/90 Pipe Without/With a Weld Yan 9-20-2012 #12;Outlines · Define the Locations of the Profiles · Pipe without A Weld (#Grid = 0.8?106) ­ Display in Tecplot: Figs.(a) ­ Display in FLUENT: Figs.(b) · Contours of Turbulence Intensity in Tecplot ­ Pipe with A Weld (#Grid = 1

McDonald, Kirk

476

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

477

Thirty years of fiberglass pipe in oilfield applications: A historical perspective  

SciTech Connect (OSTI)

A 30-year history of the use of fiberglass piping (FRP) systems for oil production piping is presented. Speculation about future uses of FRP in the oilfields is discussed. Problems encountered during the introduction of this type of pipe to the oilfields, and the evolution of early oilfield FRP systems is described. Improvements in FRP during the period of recent oilfield growth are reported. A representative list of significant uses of FRP in oilfield applications today is presented.

Oswald, K.J. [Smith Fiberglass Products Inc., Little Rock, AR (United States)

1996-05-01T23:59:59.000Z

478

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

479

Estimation of interstitial water in porous medium by capillary pressure measurements at various temperatures  

E-Print Network [OSTI]

water to remove the salt. Ten pore volumes of distilled water were flushed through each core and diaphragm. They were then dried in the oven overnight and oooled. Finally they were saturated with kerosene. Run V was made at 75 F with the cores... saturated with kerosene. In this run kerosene was the wetting fluid instead of brine. A standard Du Nouy Tensiometer was used to measure surface tension of the brine solution at 75'F, 150'F and 200'F. Surface tension of kerosene, and brine solution...

Gupta, Mahesh Chander

1968-01-01T23:59:59.000Z

480

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

Note: This page contains sample records for the topic "flush water piping" 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

* Introducing pipe -create two file descriptors, * fd[0] for reading and fd[1] for writing.  

E-Print Network [OSTI]

/* * Introducing pipe - create two file descriptors, * fd[0] for reading and fd[1] for writing. */ #include int main() { int fd[2]; char *str = "Hello World\

Ooi, Wei Tsang

482

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

483

E-Print Network 3.0 - alloy seamless pipe Sample Search Results  

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

perspectives from long term use of hydrogen piping in refining. ... Source: DOE Office of Energy Efficiency and Renewable Energy, Hydrogen, Fuel Cells and Infrastructure...

484

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

485

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

486

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

487

A Modeling Study of the Potential Water Quality Impacts from In-Stream Tidal Energy Extraction  

SciTech Connect (OSTI)

To assess the effects of tidal energy extraction on water quality in a simplified estuarine system, which consists of a tidal bay connected to the coastal ocean through a narrow channel where energy is extracted using in-stream tidal turbines, a three-dimensional coastal ocean model with built-in tidal turbine and water quality modules was applied. The effects of tidal energy extraction on water quality were examined for two energy extraction scenarios as compared with the baseline condition. It was found, in general, that the environmental impacts associated with energy extraction depend highly on the amount of power extracted from the system. Model results indicate that, as a result of energy extraction from the channel, the competition between decreased flushing rates in the bay and increased vertical mixing in the channel directly affects water quality responses in the bay. The decreased flushing rates tend to cause a stronger but negative impact on water quality. On the other hand, the increase of vertical mixing could lead to higher bottom dissolved oxygen at times. As the first modeling effort directly aimed at examining the impacts of tidal energy extraction on estuarine water quality, this study demonstrates that numerical models can serve as a very useful tool for this purpose. However, more careful efforts are warranted to address system-specific environmental issues in real-world, complex estuarine systems.

Wang, Taiping; Yang, Zhaoqing; Copping, Andrea E.

2013-11-09T23:59:59.000Z

488

The inspection of a radiologically contaminated pipeline using a teleoperated pipe crawler  

SciTech Connect (OSTI)

In the 1950s, the Savannah River Site built an open, unlined retention basin to temporarily store potentially radionuclide contaminated cooling water from a chemical separations process and storm water drainage from a nearby waste management facility that stored large quantities of nuclear fission byproducts in carbon steel tanks. The retention basin was retired from service in 1972 when a new, lined basin was completed. In 1978, the old retention basin was excavated, backfilled with uncontaminated dirt, and covered with grass. At the same time, much of the underground process pipeline leading to the basin was abandoned. Since the closure of the retention basin, new environmental regulations require that the basin undergo further assessment to determine whether additional remediation is required. A visual and radiological inspection of the pipeline was necessary to aid in the remediation decision making process for the retention basin system. A teleoperated pipe crawler inspection system was developed to survey the abandoned sections of underground pipelines leading to the retired retention basin. This paper will describe the background to this project, the scope of the investigation, the equipment requirements, and the results of the pipeline inspection.

Fogle, R.F.; Kuelske, K.; Kellner, R.A.

1995-08-01T23:59:59.000Z

489

Belgian experience in applying the {open_quotes}leak-before-break{close_quotes} concept to the primary loop piping  

SciTech Connect (OSTI)

The Leak Before Break (LBB) concept allows to eliminate from the design basis the double-ended guillotine break of the primary loop piping, provided it can be demonstrated by a fracture mechanics analysis that a through-wall flaw, of a size giving rise to a leakage still well detectable by the plant leak detection systems, remains stable even under accident conditions (including the Safe Shutdown Earthquake (SSE)). This concept was successfully applied to the primary loop piping of several Belgian Pressurized Water Reactor (PWR) units, operated by the Utility Electrabel. One of the main benefits is to permit justification of supports in the primary loop and justification of the integrity of the reactor pressure vessel and internals in case of a Loss Of Coolant Accident (LOCA) in stretch-out conditions. For two of the Belgian PWR units, the LBB approach also made it possible to reduce the number of large hydraulic snubbers installed on the primary coolant pumps. Last but not least, the LBB concept also facilitates the steam generator replacement operations, by eliminating the need for some pipe whip restraints located close to the steam generator. In addition to the U.S. regulatory requirements, the Belgian safety authorities impose additional requirements which are described in details in a separate paper. An novel aspect of the studies performed in Belgium is the way in which residual loads in the primary loop are taken into account. Such loads may result from displacements imposed to close the primary loop in a steam generator replacement operation, especially when it is performed using the {open_quote}two cuts{close_quotes} technique. The influence of such residual loads on the LBB margins is discussed in details and typical results are presented.

Gerard, R.; Malekian, C.; Meessen, O. [Tractebel Energy Engineering, Brussels (Belgium)

1997-04-01T23:59:59.000Z

490

Effects of Reinsulating Underground Steam Pipes- A Case Study  

E-Print Network [OSTI]

-13, 1999 Figure 5. The pumping process on the street. FINDINGS Line Losses The following table shows the monthly average steam flow rates in pounds per hour for each of the meters since January 1997. For September and October 1998, electric power... of the 12" and 8" diameter piping. There are six steam vaults between the two-meter 167 ESL-IE-99-05-24 Proceedings from the Twenty-first National Industrial Energy Technology Conference, Houston, TX, May 12-13, 1999 -- ------ locations. These vaults...

Mentzer, T.

491

Stability analysis of buried flexible pipes: a biaxial buckling equation  

E-Print Network [OSTI]

loading are (see Appendix B for derivations) 29 rN. . +Ne~e+rp, = 0 rNes, e + Ne, a+ rpa = 0 r M*, *, +?M*a, *e + Me, ee +?e ? (?*P*, * +?N*eP*, e + - NaPe, e) 2 +r p. Ps+r pePa+r p. = o 2 2 2 (27) Introduction of Eqs. (20) and (25) into Eqs. (27...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...

Chau, Melissa Tuyet-Mai

1990-01-01T23:59:59.000Z

492

ADAPTION OF NONSTANDARD PIPING COMPONENTS INTO PRESENT DAY SEISMIC CODES  

SciTech Connect (OSTI)

With spiraling energy demand and flat energy supply, there is a need to extend the life of older nuclear reactors. This sometimes requires that existing systems be evaluated to present day seismic codes. Older reactors built in the 1960s and early 1970s often used fabricated piping components that were code compliant during their initial construction time period, but are outside the standard parameters of present-day piping codes. There are several approaches available to the analyst in evaluating these non-standard components to modern codes. The simplest approach is to use the flexibility factors and stress indices for similar standard components with the assumption that the non-standard components flexibility factors and stress indices will be very similar. This approach can require significant engineering judgment. A more rational approach available in Section III of the ASME Boiler and Pressure Vessel Code, which is the subject of this paper, involves calculation of flexibility factors using finite element analysis of the non-standard component. Such analysis allows modeling of geometric and material nonlinearities. Flexibility factors based on these analyses are sensitive to the load magnitudes used in their calculation, load magnitudes that need to be consistent with those produced by the linear system analyses where the flexibility factors are applied. This can lead to iteration, since the magnitude of the loads produced by the linear system analysis depend on the magnitude of the flexibility factors. After the loading applied to the nonstandard component finite element model has been matched to loads produced by the associated linear system model, the component finite element model can then be used to evaluate the performance of the component under the loads with the nonlinear analysis provisions of the Code, should the load levels lead to calculated stresses in excess of Allowable stresses. This paper details the application of component-level finite element modeling to account for geometric and material nonlinear component behavior in a linear elastic piping system model. Note that this technique can be applied to the analysis of B31 piping systems.

D. T. Clark; M. J. Russell; R. E. Spears; S. R. Jensen

2009-07-01T23:59:59.000Z

493

Low-frequency fluid waves in fractures and pipes  

SciTech Connect (OSTI)

Low-frequency analytical solutions have been obtained for phase velocities of symmetrical fluid waves within both an infinite fracture and a pipe filled with a viscous fluid. Three different fluid wave regimes can exist in such objects, depending on the various combinations of parameters, such as fluid density, fluid viscosity, walls shear modulus, channel thickness, and frequency. Equations for velocities of all these regimes have explicit forms and are verified by comparisons with the exact solutions. The dominant role of fractures in rock permeability at field scales and the strong amplitude and frequency effects of Stoneley guided waves suggest the importance of including these wave effects into poroelastic theories.

Korneev, Valeri

2010-09-01T23:59:59.000Z

494

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

495

Hydrogen Piping Experience in Chevron Refining | Department of Energy  

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

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensional Subject:Groundto ApplyRoadmapNear-termPiping Experience in

496

Controlling two-phase flow through pipe junctions  

E-Print Network [OSTI]

industry with a study of gas networks that contain liquid condensate. His study was based on horizontal tees and gas flows with only a small liquid flow, which is considered a high quality mixture. He showed that when only a small fraction of gas enters... consisted of the same size pipe, so a direct comparison of this study's results to those of Hong was possible. Since the tee shown in Figure 6 was not constructed with a perfect fit, the three-way valve, shown in Figure 10, was used for some...

Thonsgaard, Jonathan Eric

1989-01-01T23:59:59.000Z

497

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

498

Criticality Safety Study of UF6and UO2F2in 8-in. Inner Diameter Piping  

SciTech Connect (OSTI)

The purpose of this report is to provide an evaluation of the criticality safety aspects of using up to 8-in.-inner-diameter (ID) piping as part of a system to monitor the {sup 235}U enrichment in uranium hexafluoride (UF{sub 6}) gas both before and after an enrichment down-blending operation. The evaluated operation does not include the blending stage but includes only the monitors and the piping directly associated with the monitors, which are in a separate room from the blending operation. There are active controls in place to limit the enrichment of the blended UF{sub 6} to a maximum of 5 weight percent (wt%) {sup 235}U. Under normal operating conditions of temperature and pressure, the UF{sub 6} will stay in the gas phase and criticality will not be credible. The two accidents of concern are solidification of the UF{sub 6} along with some hydrofluoric acid (HF) and water or moisture ingress, which would cause the UF{sub 6} gas to react and form a hydrated uranyl fluoride (UO{sub 2}F{sub 2}) solid or solution. Of these two types of accidents, the addition of water and formation of UO{sub 2}F{sub 2} is the most reactive scenario and thus limits related to UO{sub 2}F{sub 2} will bound the limits related to UF{sub 6}. Two types of systems are included in the monitoring process. The first measures the enrichment of the approximately 90 wt% enriched UF{sub 6} before it is blended. This system uses a maximum 4-in.-(10.16-cm-) ID pipe, which is smaller than the 13.7-cm-cylinder-diameter subcritical limit for UO{sub 2}F{sub 2} solution of any enrichment as given in Table 1 of American National Standard ANSI/ANS-8.1.1 Therefore, this system poses no criticality concerns for either accident scenario. The second type of system includes two enrichment monitors for lower-enriched UF{sub 6}. One monitors the approximately 1.5 wt% enriched UF{sub 6} entering the blending process, and the second monitors the approximately 5 wt% enriched UF{sub 6} coming out of the blending process. Both use a maximum 8-in.-(20.32-cm-) ID piping, where the length of the larger ID piping is approximately 9.5 m. This diameter of piping is below the 26.6-cm-cylinder-diameter subcritical limit for 5 wt% enriched UO{sub 2}F{sub 2} solutions as given in Table 6 of ANSI/ANS-8.1. Therefore, for up to 5 wt% enriched UF{sub 6}, this piping does not present a criticality concern for either accident scenario. Calculations were performed to determine the enrichment level at which criticality could become a concern in these 8-in.-ID piping sections. Both unreflected and fully water-reflected conditions were considered.

Elam, K.R.

2003-10-07T23:59:59.000Z

499

Ch.7 Water and Atmospheric Moisture Learning Objective One  

E-Print Network [OSTI]

's water originated from icy comets and hydrogen-oxygen-laden debris. Outgassing is a process by which formation Breaking roads Breaking pipes Damaging vehicle's engine Sinking ships #12;Iceberg King H +_ + _ Hydrogen bond Negatively charged at O side Positively charged at H side #12;Three States

Pan, Feifei

500

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