Powered by Deep Web Technologies
Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Anaesthetic machine pipeline inlet pressure gauges do not always measure pipeline pressure  

Science Journals Connector (OSTI)

Some anaesthetic gas machines have pipeline inlet pressure gauges which indicate the higher of either pipeline pressure, or machine circuit pressure (the ... specific circumstances lead to a delayed appreciation ...

Douglas B. Craig; John Longmuir

1980-09-01T23:59:59.000Z

2

Pipeline gas pressure reduction with refrigeration generation  

SciTech Connect (OSTI)

The high pressure of pipeline gas is reduced to the low pressure of a distribution system with simultaneous generation of refrigeration by passing the gas through two successive centrifugal compressors driven by two turbo-expanders in which the compressed gas is expanded to successively lower pressures. Refrigeration is recovered from the gas as it leaves each turbo-expander. Methanol is injected into the pipeline gas before it is expanded to prevent ice formation. Aqueous methanol condensate separated from the expanded gas is distilled for the recovery and reuse of methanol.

Markbreiter, S. J.; Schorr, H. P.

1985-06-11T23:59:59.000Z

3

ARM - Measurement - Atmospheric pressure  

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

pressure pressure ARM Data Discovery Browse Data Comments? We would love to hear from you! Send us a note below or call us at 1-888-ARM-DATA. Send Measurement : Atmospheric pressure The pressure exerted by the atmosphere as a consequence of gravitational attraction exerted upon the "column" of air lying directly above the point in question. Categories Atmospheric State Instruments The above measurement is considered scientifically relevant for the following instruments. Refer to the datastream (netcdf) file headers of each instrument for a list of all available measurements, including those recorded for diagnostic or quality assurance purposes. ARM Instruments SONDE : Balloon-Borne Sounding System CO2FLX : Carbon Dioxide Flux Measurement Systems ECOR : Eddy Correlation Flux Measurement System

4

Atmospheric Pressure Deposition for Electrochromic Windows |...  

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

Atmospheric Pressure Deposition for Electrochromic Windows Atmospheric Pressure Deposition for Electrochromic Windows Emerging Technologies Project for the 2013 Building...

5

CDIAC Atmospheric Pressure Data Sets  

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

Atmospheric Pressure Atmospheric Pressure CDIAC Climate Holdings Containing Atmospheric Pressure Data Global Data Sets Data Set Name Investigators Data Type/Format Period of Record Global Historical Climatology Network (GHCN); Vs. 1 (CDIAC NDP-041) R.S. Vose et al. Surface stations; monthly mean sea-level pressure Varies by station; through 1990 Extended Edited Synoptic Cloud Reports from Ships and Land Stations Over the Globe, 1952-2009 (CDIAC NDP-026C) C.J. Hahn, S.G. Warren, and R. Eastman Six-hourly synoptic observations of sea-level pressure Land 1971-2009; Ocean 1952-2008 Global Historical Climatology Network (GHCN); Vs. 2 (Note: the above link takes you to NOAA's National Climatic Data Center website.) R.S. Vose et al. Surface stations; monthly mean sea-level pressure Varies by station; some through most recent month

6

atmospheric pressure | OpenEI  

Open Energy Info (EERE)

pressure pressure Dataset Summary Description (Abstract):Atmospheric Pressure (kPa)NASA Surface meteorology and Solar Energy (SSE) Release 6.0 Data Set (Nov 2007)22-year Monthly & Annual Average (July 1983 - June 2005)Parameter: Atmospheric Pressure (kPa)Internet: http://eosweb.larc.nasa.gov/sse/Note 1: SSE Methodology & Accuracy sections onlineNote 2: Lat/Lon values indicate the lower left corner of a 1x1 degree region. Negative values are south and west; positive values are north and east. Boundaries of the -90/-180 region Source U.S. National Aeronautics and Space Administration (NASA), Surface meteorology and Solar Energy (SSE) Date Released March 31st, 2009 (5 years ago) Date Updated Unknown Keywords atmospheric pressure climate NASA SWERA UNEP Data text/csv icon Download Data (csv, 46 MiB)

7

FEASIBILITY STUDY OF PRESSURE PULSING PIPELINE UNPLUGGING TECHNOLOGIES FOR HANFORD  

SciTech Connect (OSTI)

The ability to unplug key waste transfer routes is generally essential for successful tank farms operations. All transfer lines run the risk of plugging but the cross site transfer line poses increased risk due to its longer length. The loss of a transfer route needed to support the waste feed delivery mission impacts the cost and schedule of the Hanford clean up mission. This report addresses the engineering feasibility for two pressure pulse technologies, which are similar in concept, for pipeline unplugging.

Servin, M. A. [Washington River Protection Solutions, LLC, Richland, WA (United States); Garfield, J. S. [AEM Consulting, LLC (United States); Golcar, G. R. [AEM Consulting, LLC (United States)

2012-12-20T23:59:59.000Z

8

Atmospheric-pressure plasma jet  

SciTech Connect (OSTI)

A {gamma}-mode, resonant-cavity plasma discharge that can be operated at atmospheric pressure and near room temperature using 13.56 MHz rf power is described. Unlike plasma torches, the discharge produces a gas-phase effluent no hotter than 250 C at an applied power of about 300 W, and shows distinct non-thermal characteristics. In the simplest design, two concentric cylindrical electrodes are employed to generate a plasma in the annular region there between. A jet of long-lived metastable and reactive species that are capable of rapidly cleaning or etching metals and other materials is generated which extends up to 8 in. beyond the open end of the electrodes. Films and coatings may also be removed by these species. Arcing is prevented in the apparatus by using gas mixtures containing He, which limits ionization, by using high flow velocities, and by properly shaping the rf-powered electrode. Because of the atmospheric pressure operation, no ions survive for a sufficiently long distance beyond the active plasma discharge to bombard a workpiece, unlike low-pressure plasma sources and conventional plasma processing methods.

Selwyn, G.S.

1999-10-05T23:59:59.000Z

9

Atmospheric Pressure Discharges: Traveling Wave Plasma Sources  

Science Journals Connector (OSTI)

Microwave sustained, atmospheric pressure plasmas are finding an increasing number of applications ... interest in the developing and investigating of appropriate plasma sources [1, 2].

Z. Zakrzewski; M. Moisan

1999-01-01T23:59:59.000Z

10

FRICTION FACTOR IN HIGH PRESSURE NATURAL GAS PIPELINES FROM ROUGHNESS MEASUREMENTS  

E-Print Network [OSTI]

FRICTION FACTOR IN HIGH PRESSURE NATURAL GAS PIPELINES FROM ROUGHNESS MEASUREMENTS DETERMINATION DU and Technology, Norway ABSTRACT Pressure drop experiments on natural gas flow at 80 to 120 bar pressure and high of natural gas at typical operating pressures (100-180 bar). At such Reynolds numbers the classical Colebrook

Gudmundsson, Jon Steinar

11

Intense and Highly Energetic Atmospheric Pressure Plasma Jet Arrays.  

E-Print Network [OSTI]

??This thesis documents the efforts taken to produce highly ionized and concentrated atmospheric pressure plasma using an arrayed atmospheric pressure plasma jet (APPJ) system. The… (more)

Furmanski, John

2012-01-01T23:59:59.000Z

12

Atmospheric Pressure Deposition for Electrochromic Windows  

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

Atmospheric Pressure Deposition Atmospheric Pressure Deposition for Electrochromic Windows TDM - Karma Sawyer Robert C. Tenent National Renewable Energy Laboratory robert.tenent@nrel.gov 303-384-6775 4/4/2013 Insulating Glass Unit (IGU) Glass Transparent Conductor (TC) Active Electrode Counter Electrode Ion Conductor 2 | Building Technologies Office eere.energy.gov Purpose and Objectives * Expense - Current market price of $50-$100/ft 2 - Projections indicate under $20/ft 2 needed - A new production paradigm is required * Aesthetics - Architects hesitant to adopt "smurf glass"

13

Atmospheric Pressure Deposition for Electrochromic Windows  

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

Atmospheric Pressure Deposition Atmospheric Pressure Deposition for Electrochromic Windows TDM - Karma Sawyer Robert C. Tenent National Renewable Energy Laboratory robert.tenent@nrel.gov 303-384-6775 4/4/2013 Insulating Glass Unit (IGU) Glass Transparent Conductor (TC) Active Electrode Counter Electrode Ion Conductor 2 | Building Technologies Office eere.energy.gov Purpose and Objectives * Expense - Current market price of $50-$100/ft 2 - Projections indicate under $20/ft 2 needed - A new production paradigm is required * Aesthetics - Architects hesitant to adopt "smurf glass"

14

Integrity management of a HIC-damaged pipeline and refinery pressure vessel through hydrogen permeation measurements  

SciTech Connect (OSTI)

Hydrogen permeation measurements were used in the successful operation of a sour gas pipeline subsequent to a hydrogen-induced cracking (HIC) failure in September 1992. Two joints of HIC-resistant pipe were used to repair the failed section and adjacent cut-outs. The pipeline has been operated for five years with no further instances of HIC failure. Hydrogen permeation monitoring was chosen as an integrity management tool because no techniques are currently available to inspect for HIC damage in a pipeline this size. Self-powered electrochemical devices installed on the pipeline were employed to monitor and control the effectiveness of a batch inhibition program in maintaining diffusing hydrogen atom concentrations below the laboratory-measured threshold for initiation of HIC damage. Permeation monitoring of a HIC-damaged refinery pressure vessel indicated very high hydrogen atom flux, despite attempts to inhibit corrosion with ammonium polysulfide injection. In this instance it was decided that replacement of the vessel was necessary.

Hay, M.G.; Rider, D.W. [Shell Canada Ltd., Calgary, Alberta (Canada)

1998-12-31T23:59:59.000Z

15

Kinetics of Non-Thermal Atmospheric Pressure  

E-Print Network [OSTI]

Kinetics of Non-Thermal Atmospheric Pressure Plasmas Alexander Fridman · Microdischarge Interaction and Structuring in Dielectric Barrier Discharges · Kinetics of Blood Coagulation in Plasma · Surface Wound wire Area of DBD plasma region: ~104cm2 #12;7 Microdischarge Patterning (2D) R22 R23 R24 R26 R27 R28

Kaganovich, Igor

16

MICROSTRUCTURE AND MECHANICAL PROPERTY PERFORMANCE OF COMMERCIAL GRADE API PIPELINE STEELS IN HIGH PRESSURE GASEOUS HYDROGEN  

SciTech Connect (OSTI)

The continued growth of the world s developing countries has placed an ever increasing demand on traditional fossil fuel energy sources. This development has lead to increasing research and development of alternative energy sources. Hydrogen gas is one of the potential alternative energy sources under development. Currently the most economical method of transporting large quantities of hydrogen gas is through steel pipelines. It is well known that hydrogen embrittlement has the potential to degrade steel s mechanical properties when hydrogen migrates into the steel matrix. Consequently, the current pipeline infrastructure used in hydrogen transport is typically operated in a conservative fashion. This operational practice is not conducive to economical movement of significant volumes of hydrogen gas as an alternative to fossil fuels. The degradation of the mechanical properties of steels in hydrogen service is known to depend on the microstructure of the steel. Understanding the levels of mechanical property degradation of a given microstructure when exposed to hydrogen gas under pressure can be used to evaluate the suitability of the existing pipeline infrastructure for hydrogen service and guide alloy and microstructure design for new hydrogen pipeline infrastructure. To this end, the 2 Copyright 2010 by ASME microstructures of relevant steels and their mechanical properties in relevant gaseous hydrogen environments must be fully characterized to establish suitability for transporting hydrogen. A project to evaluate four commercially available pipeline steels alloy/microstructure performance in the presences of gaseous hydrogen has been funded by the US Department of Energy along with the private sector. The microstructures of four pipeline steels were characterized and then tensile testing was conducted in gaseous hydrogen and helium at pressures of 800, 1600 and 3000 psi. Based on measurements of reduction of area, two of the four steels that performed the best across the pressure range were selected for evaluation of fracture and fatigue performance in gaseous hydrogen at 800 and 3000 psi. This paper will describe the work performed on four commercially available pipeline steels in the presence of gaseous hydrogen at pressures relevant for transport in pipelines. Microstructures and mechanical property performances will be compared. In addition, recommendations for future work related to gaining a better understanding of steel pipeline performance in hydrogen service will be discussed.

Stalheim, Mr. Douglas [DGS Metallurgical Solutions Inc; Boggess, Todd [Secat; San Marchi, Chris [Sandia National Laboratories (SNL); Jansto, Steven [Reference Metals Company; Somerday, Dr. B [Sandia National Laboratories (SNL); Muralidharan, Govindarajan [ORNL; Sofronis, Prof. Petros [University of Illinois

2010-01-01T23:59:59.000Z

17

Free Floating Atmospheric Pressure Ball Plasmas  

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

Free-Floating Atmospheric Pressure Ball Plasmas Free-Floating Atmospheric Pressure Ball Plasmas G. A. Wurden, Z. Wang, C. Ticos Los Alamos National Laboratory L Al NM 87545 USA Los Alamos, NM 87545 USA C. J. v. Wurden Los Alamos High School L Al NM 87544 Los Alamos, NM 87544 Presented at the PPPL Colloquium Sept. 17, 2008 U N C L A S S I F I E D Operated by the Los Alamos National Security, LLC for the DOE/NNSA LA-UR-08-06284 Outline of this talk *A discussion of ball lightning reports in nature *How can ball plasmas be made in the laboratory? *Detailed experiments on long lived free floating *Detailed experiments on long-lived free-floating atmospheric pressure ball plasmas C i f l b b ll l i h "b ll *Comparison of laboratory ball plasmas with "ball lightning" *Summary U N C L A S S I F I E D Operated by the Los Alamos National Security, LLC for the DOE/NNSA

18

Propagation of an atmospheric pressure plasma plume  

SciTech Connect (OSTI)

The ''plasma bullet'' behavior of atmospheric pressure plasma plumes has recently attracted significant interest. In this paper, a specially designed plasma jet device is used to study this phenomenon. It is found that a helium primary plasma can propagate through the wall of a dielectric tube and keep propagating inside the dielectric tube (secondary plasma). High-speed photographs show that the primary plasma disappears before the secondary plasma starts to propagate. Both plumes propagate at a hypersonic speed. Detailed studies on the dynamics of the plasma plumes show that the local electric field induced by the charges on the surface of the dielectric tube plays an important role in the ignition of the secondary plasma. This indicates that the propagation of the plasma plumes may be attributed to the local electric field induced by the charges in the bulletlike plasma volume.

Lu, X.; Xiong, Q.; Xiong, Z.; Hu, J.; Zhou, F.; Gong, W.; Xian, Y.; Zou, C.; Tang, Z.; Jiang, Z.; Pan, Y. [College of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan, Hubei 430074 (China)

2009-02-15T23:59:59.000Z

19

Influence of old rectangular repair patches on the burst pressure of a gas pipeline  

Science Journals Connector (OSTI)

Seven full scale hydrostatic burst tests were carried out on pipes extracted from an API 5LX52 gas pipeline that contained rectangular and elliptical fillet welded patches and other repairs of different geometries. All breaks took place after widespread yielding. This analysis shows that the patches that generate greater risks are those that: (1) were attached to the pipeline at very low pressure, (2) were placed to repair large defects, (3) are rectangular, long in the direction of the pipe, and narrow, (4) the quality of the weld is doubtful. Based on data reported by In Line Inspection (ILI), of the four conditions mentioned above, only the third can be assessed in order to quantify risks and to schedule replacements.

Pablo Gabriel Fazzini; José Luis Otegui

2006-01-01T23:59:59.000Z

20

Novel Applications of Atmospheric Pressure Plasma on Textile Materials.  

E-Print Network [OSTI]

??Various applications of atmospheric pressure plasma are investigated in conjunction with polymeric materials including paper, polypropylene non-woven fabric, and cotton. The effect of plasma on… (more)

Cornelius, Carrie Elizabeth

2009-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Dissociation of carbon dioxide in atmospheric pressure microchannel plasma devices.  

E-Print Network [OSTI]

??Plasma discharge of carbon dioxide at atmospheric pressure was successfully demonstrated in microchannel plasma devices at breakdown voltages lower than 1 kVRMS. Optical emissions of… (more)

Oh, Taegon

2013-01-01T23:59:59.000Z

22

Coating application and evaluation for heavy wall thickness, temperature and pressure pipeline  

SciTech Connect (OSTI)

A Venezuelan oil company is developing a project for high pressure gas injection for oil recovery. This project has a compression plant to increase the gas pressure from 1,200 to 9,000 psi. Due to the high gas pressure (9,000 psi) and high temperature (90 C), a carbon steel API 5L-X60 with 2.5 in thickness pipe has been selected. The gas is transported from the compression plant to the injection well. This type of pipeline is unique in the world and in the authors` knowledge no one has applied and evaluated external coating for this combination of heavy wall thickness, pressure and temperature pipeline. Dual fusion bonded epoxy was selected as main coating, combined with high temperature sleeves for the joints. Several parameters were considered in the selection of the coating: high temperature, wall thickness, application condition, heat during the welding process and coating performance in the lab. The large amount of heat accumulated during the application, due to the thick wall, requires a modification of coating application parameters, as well as the cooling condition. The evaluation of the coating was performed with a specially designed test for high temperatures. The laboratory results (impact resistance, degree of curing, cathodic disbonding, adhesion and hot water immersion) indicate that the application condition used was good to obtain a product under specification.

Rodriguez, V.; Perozo, E.; Alvarez, E. [Intevep, S.A., Caracas (Venezuela). Tecnologia de Materiales

1997-09-01T23:59:59.000Z

23

E-Print Network 3.0 - atmospheric pressure interface Sample Search...  

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

dynamically induced horizontal static pressure gradients at the surface-atmosphere interface (Waddington et al... role of pressure pumping due to atmospheric pressure...

24

An Introduction to Nonequilibrium Plasmas at Atmospheric Pressure  

E-Print Network [OSTI]

1 1 An Introduction to Nonequilibrium Plasmas at Atmospheric Pressure Sander Nijdam, Eddie van;2 1 An Introduction to Nonequilibrium Plasmas at Atmospheric Pressure pulsed power source for ozone Veldhuizen, Peter Bruggeman, and Ute Ebert 1.1 Introduction 1.1.1 Nonthermal Plasmas and Electron Energy

Ebert, Ute

25

Atmospheric Pressure Photoionization Applied to Quantitation of Cyproterone Acetate in Human Plasma  

Science Journals Connector (OSTI)

......research-article Articles Atmospheric Pressure Photoionization...Acetate in Human Plasma Alberto S. Pereira...100 mg). Atmospheric pressure photoionization...acetate in human plasma. | Cyproterone...acetate in human plasma. This 513 Abstract Atmospheric Pressure Photoionization......

Alberto S. Pereira; Gustavo D. Mendes; Lina S.O.B. Oliveira; Hugo F. Valle; Gilberto De Nucci

26

Dental Applications of Atmospheric-Pressure Non-Thermal Plasmas  

Science Journals Connector (OSTI)

This chapter presents a summary of selected recent research efforts devoted to the use of low-temperature (or non-thermal) atmospheric-pressure plasmas in various dental applications. Areas of application ... fun...

WeiDong Zhu; Kurt Becker; Jie Pan; Jue Zhang; Jing Fang

2014-01-01T23:59:59.000Z

27

Surface modification with a remote atmospheric pressure plasma  

Science Journals Connector (OSTI)

A remote atmospheric pressure DC glow discharge is used for the treatment of polymer foils. The envisaged plasma effect is an increase in the surface ... the distribution of the current density in the plasma. The...

E. Temmerman; C. Leys

2004-03-01T23:59:59.000Z

28

Surface Modification by Atmospheric Pressure Plasma for Improved Bonding.  

E-Print Network [OSTI]

??An atmospheric pressure plasma source operating at temperatures below 150°C and fed with 1.0-3.0 volume% oxygen in helium was used to activate the surfaces of… (more)

Williams, Thomas Scott

2013-01-01T23:59:59.000Z

29

Ultraprecision Finishing of Photomask Substrate by Utilizing Atmospheric Pressure Plasma  

Science Journals Connector (OSTI)

In the case of the atmospheric pressure plasma, localized high density plasma is generated around the electrode. Therefore, ... new ultra precision machining method which is named plasma chemical vaporization mac...

Kazuya Yamamura; Akihiro Fujiwara; Koji Ueno…

2007-01-01T23:59:59.000Z

30

Applications of Non Thermal Atmospheric Pressure Plasma in Medicine  

Science Journals Connector (OSTI)

Non-thermal atmospheric pressure plasma is now being developed for use in ... a lot of clinical applications of non-thermal plasma have been tested and the results show promising potential for Plasma Medicine. In...

S. Kalghatgi; D. Dobrynin; G. Fridman…

2008-01-01T23:59:59.000Z

31

Fatigue crack retardation by the application of repair coatings to gas pipelines under pressure  

Science Journals Connector (OSTI)

We describe additional capabilities of the repair insulation coatings applied to main pipelines (without taking them out of operation) in increasing the durability of these pipelines. As a specific feature of thi...

T. P. Venhrynyuk

2013-05-01T23:59:59.000Z

32

Study on Sub-sea Pipelines Hyperbaric Welding Repair under High Air Pressures  

Science Journals Connector (OSTI)

Most Chinese sub-sea pipelines are buried in Bohai Sea less than ... are widely used For the application of offshore pipelines repair, the hyperbaric TIG welding process under high...

Canfeng Zhou; Xiangdong Jiao; Long Xue…

2011-01-01T23:59:59.000Z

33

E-Print Network 3.0 - atmospheric pressure helium-oxygen Sample...  

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

Copyright permission to reproduce figures andor text from this article 12;Remote Atmospheric-Pressure... ) were treated with an atmospheric-pressure oxygen and...

34

Numerical solutions for determining wave-induced pressure distributions around buried pipelines  

E-Print Network [OSTI]

is an expensive operation, pipeline failures often result in very costly repairs and production losses. There now exists an urgent need to develop a rational design procedure to predict the required stability conditions for burying pipelines, Several... is an expensive operation, pipeline failures often result in very costly repairs and production losses. There now exists an urgent need to develop a rational design procedure to predict the required stability conditions for burying pipelines, Several...

Lai, Ngok-Wai

2012-06-07T23:59:59.000Z

35

Surface Nanostructuring of Polysulfone Membranes by Atmospheric Pressure Plasma-Induced Graft Polymerization (APPIGP)  

E-Print Network [OSTI]

large substrates. Various atmospheric plasma sources arePolymerization The atmospheric plasma source used in thisby Remote Atmospheric- Pressure Plasma. Ieee Transactions on

Kim, Soo Min

2013-01-01T23:59:59.000Z

36

Photons and particles emitted from cold atmospheric-pressure plasma inactivate bacteria and biomolecules independently and synergistically  

Science Journals Connector (OSTI)

...particles emitted from cold atmospheric-pressure plasma inactivate bacteria and...Bochum, Germany Cold atmospheric-pressure plasmas are currently in use...bactericidal properties of cold atmospheric-pressure plasma. plasma medicine|atmospheric-pressure...

2013-01-01T23:59:59.000Z

37

Laser-rf creation and diagnostics of seeded atmospheric pressure air and nitrogen plasmas  

E-Print Network [OSTI]

Laser-rf creation and diagnostics of seeded atmospheric pressure air and nitrogen plasmas Siqi Luo to the ambient air. The atmospheric-pressure plasma is then maintained with the 13.56 MHz rf power. Using of atmospheric-pressure air plasmas The kinetics of reactions and transitions in atmospheric- pressure air

Scharer, John E.

38

sea pipeline  

Science Journals Connector (OSTI)

sea pipeline, sealine, marine (pipe)line, undersea (pipe)line, submarine (pipe)line, subsea (pipe)line ? Untermeer(es)(rohr)leitung f

2014-08-01T23:59:59.000Z

39

Wind noise and the spectrum of atmospheric turbulence pressure fluctuations  

Science Journals Connector (OSTI)

Previous research [S. Morgan and R. Raspet J. Acoust. Soc. Am. 92 1180–1183 (1992)] has shown that wind noise is predominantly caused by pressure fluctuations intrinsic to the turbulent atmospheric flow. Therefore it should be possible to predict wind noise from models for turbulent pressure spectra in the atmosphere. Based on simple dimensional analysis and an application of Taylor’s hypothesis the inertial?subrange power spectrum for turbulent pressure fluctuations should be proportional to f ?7/3 where f is frequency. But more recent atmospheric observations and theoretical arguments [J. D. Albertson G. G. Katul M. B. Parlange and W. E. Eichinger Phys. Fluids 10 1725–1732 (1998)] suggest that the power spectrum actually goes as f ?3/2. In this paper it is shown that the f ?3/2 dependence predicts a much slower decay in wind noise with increasing acoustic frequency than is typically observed. Possible reasons for this discrepancy are discussed.

2003-01-01T23:59:59.000Z

40

Climate: monthly and annual average atmospheric pressure GIS data at  

Open Energy Info (EERE)

atmospheric pressure GIS data at atmospheric pressure GIS data at one-degree resolution of the World from NASA/SSE Dataset Summary Description (Abstract):Atmospheric Pressure (kPa)NASA Surface meteorology and Solar Energy (SSE) Release 6.0 Data Set (Nov 2007)22-year Monthly & Annual Average (July 1983 - June 2005)Parameter: Atmospheric Pressure (kPa)Internet: http://eosweb.larc.nasa.gov/sse/Note 1: SSE Methodology & Accuracy sections onlineNote 2: Lat/Lon values indicate the lower left corner of a 1x1 degree region. Negative values are south and west; positive values are north and east. Boundaries of the -90/-180 region are -90 to -89 (south) and -180 to -179 (west). The last region, 89/180, is bounded by 89 to 90 (north) and 179 to 180 (east). The mid-point of the region is +0.5 added to the the Lat/Lon value. These data are

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Atmospheric Pressure Plasma Jet Treatment of Polyethylene Surfaces for  

E-Print Network [OSTI]

Atmospheric Pressure Plasma Jet Treatment of Polyethylene Surfaces for Adhesion Improvement Uwe studied the activation mechanism of polyethylene (PE) for a pretreatment with a commercial APPJ system jet system from Plasmatreat GmbH (Steinhagen, Germany) was used for the Full Paper Polyethylene (PE

Greifswald, Ernst-Moritz-Arndt-Universität

42

Continuous nanoparticle generation and assembly by atmospheric pressure arc discharge  

E-Print Network [OSTI]

Continuous nanoparticle generation and assembly by atmospheric pressure arc discharge Jesse J. Cole a dc arc discharge plasma. The particles are positively charged by the arc and form a room temperature precursor materials.5,6 High temperature plasmas in the form of dc arc discharges led to the discovery

Jacobs, Heiko O.

43

Atmospheric pressure plasma jet: Effect of electrode configuration, discharge behavior, and its formation mechanism  

E-Print Network [OSTI]

Atmospheric pressure plasma jet: Effect of electrode configuration, discharge behavior, and its 2008; accepted 8 June 2009; published online 10 July 2009 Atmospheric pressure plasma jet APPJ can The atmospheric pressure plasma is much advantageous over low pressure plasmas in various aspects. It can be dis

Zexian, Cao

44

Simulation of Atmospheric Pressure Non-Thermal Plasma Discharges for Surface Decontamination Applications  

Science Journals Connector (OSTI)

Numerical simulations are conducted to characterize atmospheric pressure plasma discharges for surface decontamination applications. A self ... dimensional hybrid model is developed to simulate the atmospheric pr...

T. Farouk; B. Farouk; A. Gutsol; A. Fridman

2008-01-01T23:59:59.000Z

45

E-Print Network 3.0 - atmospheric-pressure photoionization source...  

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

Collection: Physics 47 Photoionization of atmospheric gases studied by time-resolved terahertz spectroscopy Summary: with the examined gas at atmospheric pressure. The THz...

46

Atmospheric pressure plasma processing with microstructure electrodes and microplanar reactors  

Science Journals Connector (OSTI)

Atmospheric pressure plasmas can be generated, if the distance between the plasma generating electrodes is in the range of 100 ?m, and radio-frequencies of 13.56 or 27.12 \\{MHz\\} are applied. Such small dimensioned plasmas are only of interest for industrial plasma applications if larger areas can be processed. It will be shown that both with microstructure electrodes as with microplanar-reactor, plasma processing can be carried out for typical substrate dimensions of 100 mm and more using helium or neon for plasma generation. First experiments of plasma surface treatment of polymers and of thin film deposition on silicon will be presented. With mixtures of some percentage C2H2 in atmospheric pressure helium, diamond-like carbon films with deposition rates between 1–10 ?m/min can be deposited.

H. Schlemm; D. Roth

2001-01-01T23:59:59.000Z

47

Low pressure and atmospheric pressure plasma-jet systems and their application for deposition of thin films  

E-Print Network [OSTI]

1 Low pressure and atmospheric pressure plasma-jet systems and their application for deposition atmospheric discharge plasma jet. This system works at open air without any vacuum system. This system on polymer substrates. Under certain condition in the atmospheric plasma jet, these films have crystalline

Paris-Sud XI, Université de

48

Plasma Polymerization in an Atmospheric Pressure Dielectric Barrier Discharge in a Flowing Gas  

Science Journals Connector (OSTI)

The plasma of atmospheric pressure dielectric barrier discharges (DBD) has ... ozone generation by Siemens 1857. Non-thermal atmospheric pressure discharges are of considerable interest because...1, 2.... The DBD...

Rüdiger Foest; Martin Schmidt; Jürgen F. Behnke

2004-01-01T23:59:59.000Z

49

Spectroscopy of atmospheric pressure air jet plasma in transverse arc discharge Valeriy Chernyak1  

E-Print Network [OSTI]

Spectroscopy of atmospheric pressure air jet plasma in transverse arc discharge Valeriy Chernyak1 of the atmospheric pressure air jet plasma in the transverse cw dc arc discharge of high voltage was done. Within.g. application of approximation of the optically thin plasma in conditions of high atmospheric pressure

Paris-Sud XI, Université de

50

Interplay of discharge and gas flow in atmospheric pressure plasma jets Nan Jiang,1  

E-Print Network [OSTI]

Interplay of discharge and gas flow in atmospheric pressure plasma jets Nan Jiang,1 JingLong Yang,2 2011) Interplay of discharge and gas flow in the atmospheric pressure plasma jets generated with three:10.1063/1.3581067] I. INTRODUCTION The atmospheric pressure plasma jet (APPJ) that is nor- mally

Zexian, Cao

51

Atmospheric pressure plasma jets beyond ground electrode as charge overflow in a dielectric barrier discharge setup  

E-Print Network [OSTI]

Atmospheric pressure plasma jets beyond ground electrode as charge overflow in a dielectric barrier voltage and the width of ground electrode, atmospheric pressure plasma jets extending beyond the ground American Institute of Physics. doi:10.1063/1.3466993 I. INTRODUCTION The cold atmospheric pressure plasma

Zexian, Cao

52

Tantalum etching with a nonthermal atmospheric-pressure plasma  

Science Journals Connector (OSTI)

Tantalum was etched in a downstream atmospheric-pressure plasma. In this process etching occurred without significant ion bombardment. An etching rate of 6.0±0.5 ?m/min was achieved using 14.8 Torr oxygen 22.4 Torr carbon tetrafluoride 720±5 Torr helium 685 W radio frequency power at 13.56 MHz and a film temperature of 300?°C. The etching rate increased with the applied power carbon tetrafluoride pressure oxygen pressure and residence time of the gas between the electrodes indicating that the surface reaction depends on the density of reactive fluorine species generated in the plasma.X-ray photoemission spectroscopy revealed that the etched surface was covered with tantalum fluoride and to a lesser extent tantalum oxide. Based on these observations a mechanism for tantalumetching is proposed which involves the reaction between fluorine atoms and the adsorbed tantalum fluoride.

V. J. Tu; J. Y. Jeong; A. Schütze; S. E. Babayan; G. Ding; G. S. Selwyn; R. F. Hicks

2000-01-01T23:59:59.000Z

53

Experimental Investigation Of Atmospheric Pressure Surface Wave Discharges  

SciTech Connect (OSTI)

Microwave atmospheric pressure discharge in neon sustained by surface waves in a dielectric tube is considered. The plasma column length was measured versus absorbed microwave power for different discharge conditions. This gives a view on the wave propagation characteristics. The predicted dependence of discharge length on the total flux of wave power based on the modified model of non-equilibrium plasma is compared with experimental values. Moreover, we present results of spectroscopic investigations of the electron density. The electron density was determined using the method based on the Stark broadening of H{beta} spectral line. The spectroscopic results we shall use developing of a model of propagation of surface wave.

Czylkowski, D.; Jasinski, M.; Nowakowska, H.; Zakrzewski, Z. [The Szewalski Institute of Fluid-Flow Machinery, Polish Academy of Sciences, Fiszera 14, 80-231 Gdansk (Poland)

2006-01-15T23:59:59.000Z

54

Plasma sterilization using glow discharge at atmospheric pressure  

Science Journals Connector (OSTI)

Recent development of atmospheric pressure glow discharge was compared with the performance of an apparatus used in the first APG experiment, in terms of sterilization of newly classified biological indicator: Bacillus atrophaeus, former Bacillus subtilis var. niger and Geobacillus stearothermophilus. Stabilization was attained by controlling the experimental conditions, at low frequency: 100 kHz and Radio Frequency: 13.56 MHz, water vapor/He dilution. Large volume of meta-stable atomic helium is responsible for the result that aids generation of hydroxyl radicals.

Tetsuya Akitsu; Hiroshi Ohkawa; Masao Tsuji; Hideo Kimura; Masuhiro Kogoma

2005-01-01T23:59:59.000Z

55

Study of a dual frequency atmospheric pressure corona plasma  

SciTech Connect (OSTI)

Radio frequency mixing of 2 and 13.56 MHz was investigated by performing experimental measurements on the atmospheric pressure corona plasma. As a result of the dual frequency, length, current density, and electron excitation temperature of the plasma were increased, while the gas temperature was maintained at roughly the same level when compared to the respective single frequency plasmas. Moreover, observation of time-resolved images revealed that the dual frequency plasma has a discharge mode of 2 MHz positive streamer, 2 MHz negative glow, and 13.56 MHz continuous glow.

Kim, Dan Bee; Moon, S. Y.; Jung, H.; Gweon, B.; Choe, Wonho [Department of Physics, Korea Advanced Institute of Science and Technology, 335 Gwahangno, Yuseong-gu, Daejeon 305-701 (Korea, Republic of)

2010-05-15T23:59:59.000Z

56

Atmospheric-pressure gas breakdown from 2 to 100 MHz  

SciTech Connect (OSTI)

We report a detailed study of breakdown voltage of atmospheric-pressure helium gas between two parallel-plate electrodes from 2 to 100 MHz. Experimental data show that the breakdown voltage reduces initially with increasing frequency due to a diminishing contribution of drift-dominated electron wall loss and then begins to increase with increasing frequency. The latter is contrary to the current understanding that relies largely on the electron wall loss mechanism. Particle-in-cell simulation suggests that rapid oscillation of the applied voltage prevents electrons from reaching their maximum achievable kinetic energy, thus compromising the ionization efficiency and increasing the breakdown voltage.

Walsh, J. L.; Zhang, Y. T.; Iza, F.; Kong, M. G. [Department of Electronic and Electrical Engineering, Loughborough University, Loughborough, Leicestershire LE11 3TU (United Kingdom)

2008-12-01T23:59:59.000Z

57

Surface Modification by Atmospheric Pressure Plasma for Improved Bonding  

E-Print Network [OSTI]

composites using atmospheric plasma treatment. J. Appl.of polymer surfaces: atmospheric plasma versus vacuum plasmaA. Morgan, The effect of atmospheric plasma treatment on the

Williams, Thomas Scott

2013-01-01T23:59:59.000Z

58

The effects of atmospheric pressure plasma on the synthesis of carbon nanotubes  

Science Journals Connector (OSTI)

In this study, we investigated the effects of atmospheric plasma on the synthesis of carbon nanotubes (CNTs) forests. Tall and high CNTs forests have been successfully grown on a large scale using a newly developed system called atmospheric pressure ... Keywords: Atmospheric pressure, Carbon nanotubes, Mass production, Plasma effects, Plasma enhanced chemical vapor deposition

Seok Seung Shin; Bum Ho Choi; Young Mi Kim; Jong Ho Lee; Dong Chan Shin

2009-04-01T23:59:59.000Z

59

Microstreamer dynamics during plasma remediation of NO using atmospheric pressure dielectric barrier discharges  

E-Print Network [OSTI]

Microstreamer dynamics during plasma remediation of NO using atmospheric pressure dielectric- ate toxins from atmospheric pressure gas streams. Plasma remediation is one technique which has been methods for the removal of oxides of nitrogen NxOy from atmospheric gas streams and among those techniques

Kushner, Mark

60

A uniform glow discharge plasma source at atmospheric pressure  

Science Journals Connector (OSTI)

An atmospheric-pressure uniform continuous glowplasma was produced in ambient air assisted by argon feeding gas using a 13.56 MHz rf source. Based on the measured current–voltage curve and optical emission spectrum intensity the plasma showed typical glow discharge characteristics free from streamers and arc. The measured rotational and vibrational temperatures were in the range of 490 to 630 K and 2000 to 3300 K respectively within the operation range of argon flow rate and rf power. From the spatial measurement of total optical emission intensity and rotational and vibrational temperatures the plasma shows very high uniformity (over 93%) in the lengthwise direction. The plasma size for this study was 200 mm×50 mm×5 mm although a plasma was produced in the scaled-up version of 600 mm in length aiming for large-area plasma applications.

Se Youn Moon; W. Choe; B. K. Kang

2004-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Development of a trielectrode plasma curtain at atmospheric pressure  

SciTech Connect (OSTI)

The development of a nonequilibrium, low-power, trielectrode plasma curtain at atmospheric pressure is presented. The discharge is based on the combination of an ac dielectric barrier discharge with a dc corona discharge in a three electrode system, and can be sustained for large time periods and over interelectrode air gaps up to 20 mm and with an electrode length of {approx}10 cm in the transversal direction. The discharge is composed of a train of streamers, with a repetition frequency in the range 50-200 kHz, and carrying an average current in the range 0.1-0.4 mA. The geometry of the discharge makes it appropriate for gas decontamination.

Zastawny, H.; Artana, G. [Laboratorio de Fluidodinamica, Universidad de Buenos Aires, Av. Paseo Colon 850, 1063 Buenos Aires (Argentina); Sosa, R. [Laboratorio de Fluidodinamica, Universidad de Buenos Aires, Av. Paseo Colon 850, 1063 Buenos Aires (Argentina); Instituto de Fisica del Plasma, CONICET-Dto. de Fisica, FCEN, Universidad de Buenos Aires, Ciudad. Universitaria, Pab. I, 1428 Buenos Aires (Argentina); Grondona, D.; Marquez, A.; Kelly, H. [Instituto de Fisica del Plasma, CONICET-Dto. de Fisica, FCEN, Universidad de Buenos Aires, Ciudad. Universitaria, Pab. I, 1428 Buenos Aires (Argentina)

2008-07-21T23:59:59.000Z

62

Atmospheric-Pressure Plasma Cleaning of Contaminated Surfaces  

SciTech Connect (OSTI)

Project was to develop a low-cost, environmentally benign technology for the decontamination and decommissioning of transuranic waste. With the invention of the atmospheric-pressure plasma jet the goal was achieved. This device selectively etches heavy metals from surfaces, rendering objects radiation free and suitable for decommissioning. The volatile reaction products are captured on filters, which yields a tremendous reduction in the volume of the waste. Studies on tantalum, a surrogate material for plutonium, have shown that etch rate of 6.0 microns per minute can be achieved under mild conditions. Over the past three years, we have made numerous improvements in the design of the plasma jet. It may now be operated for hundreds of hours and not undergo any degradation in performance. Furthermore, small compact units have been developed, which are easily deployed in the field.

Robert F. Hicks; Gary S. Selwyn

2001-01-09T23:59:59.000Z

63

6 - Pipeline Drying  

Science Journals Connector (OSTI)

Publisher Summary This chapter reviews pipeline dewatering, cleaning, and drying. Dewatering can be a simple process or, if the procedure is not properly planned, a difficult one. Pipelines used to transport crude oil and/or refined products will probably only require removal of the test water before the line is placed in service. If the pipeline will be used to transport materials that must meet a specified dryness requirement, the pipeline will need to be dewatered, cleaned, and dried. Pipelines used to transport natural gas will need some drying, depending on the operating pressure and the location of the line, to prevent the formation of hydrates. Other pipelines may require drying to protect the pipe from internal corrosion caused by the formation of corrosive acids, such as carbonic acid in the case of carbon dioxide pipelines.

2014-01-01T23:59:59.000Z

64

Laser ablation electrospray ionization (LAESI) for atmospheric pressure, In vivo, and imaging mass spectrometry  

DOE Patents [OSTI]

The field of the invention is atmospheric pressure mass spectrometry (MS), and more specifically a process and apparatus which combine infrared laser ablation (LA) with electrospray ionization (ESI).

Vertes, Akos (Reston, VA); Nemes, Peter (Silver Spring, MD)

2011-11-29T23:59:59.000Z

65

Laser ablation electrospray ionization (LAESI) for atmospheric pressure, in vivo, and imaging mass spectrometry  

DOE Patents [OSTI]

The field of the invention is atmospheric pressure mass spectrometry (MS), and more specifically a process and apparatus which combine infrared laser ablation with electrospray ionization (ESI).

Vertes, Akos; Nemes, Peter

2014-08-19T23:59:59.000Z

66

Laser ablation electrospray ionization (LAESI) for atmospheric pressure, in vivo, and imaging mass spectrometry  

DOE Patents [OSTI]

The field of the invention is atmospheric pressure mass spectrometry (MS), and more specifically a process and apparatus which combine infrared laser ablation with electrospray ionization (ESI).

Vertes, Akos; Nemes, Peter

2013-07-16T23:59:59.000Z

67

Cell treatment and surface functionalization using the atmospheric pressure glow discharge plasma torch (APGD-t).  

E-Print Network [OSTI]

??The atmospheric pressure glow discharge plasma torch (APGD-t ) was used to treat cell cultures to investigate potential reactions with biological tissue. The plasma jet… (more)

Yonson, Sara.

2006-01-01T23:59:59.000Z

68

On plasma parameters of a self-organized plasma jet at atmospheric pressure  

Science Journals Connector (OSTI)

...Electron temperature and electron concentration in the active zone of a miniaturized radio frequency (RF) non-thermal atmospheric pressure plasma jet in argon have been determined using... ...

J. Schäfer; F. Sigeneger; R. Foest; D. Loffhagen…

2010-12-01T23:59:59.000Z

69

Atmospheric-pressure dielectric barrier discharge (DBD) in air : plasma characterisation for skin therapy.  

E-Print Network [OSTI]

??A pulsed atmospheric-pressure dielectric barrier discharge (DBD) device operating in air is investigated for medical applications such as for skin disinfection and promotion of wound… (more)

Rajasekaran, Priyadarshini

2011-01-01T23:59:59.000Z

70

Atmospheric-Pressure Helium Inductively Coupled Plasmas for Elemental Mass Spectrometry  

Science Journals Connector (OSTI)

Analytical and fundamental characteristics of helium inductively coupled plasma mass spectrometry (He ICPMS) were explored for atmospheric-pressure plasmas generated in a 13-mm He...

Zhang, Hao; Nam, Sang-Ho; Cai, Mingxiang; Montaser, Akbar

1996-01-01T23:59:59.000Z

71

Atmospheric pressure plasma chemical deposition by using dielectric barrier discharge system.  

E-Print Network [OSTI]

??During the last decade atmospheric pressure plasma sources have been very successful in various practical applications such as surface cleaning, modification and sterilization. Lately thin… (more)

Hong, Jungmi

2013-01-01T23:59:59.000Z

72

Atmospheric Pressure Weakly Ionized Plasma Reactor Based on the Corona Discharge .  

E-Print Network [OSTI]

??Atmospheric pressure weakly ionized plasma (APWIP) is being used to treat or process goods and materials because it only activates the surface without modification of… (more)

[No author

2012-01-01T23:59:59.000Z

73

Radio-frequency induction plasmas at atmospheric pressure: Mixtures of hydrogen, nitrogen, and oxygen with argon  

Science Journals Connector (OSTI)

Numerical calculations are reported which simulate atmospheric-pressure radiofrequency induction plasmas consisting of either pure argon or mixtures of argon with hydrogen, nitrogen, or oxygen. These calculati...

S. L. Girshick; W. Yu

1990-12-01T23:59:59.000Z

74

Soft Plasma Polymerization of Gas State Precursors from an Atmospheric Pressure Corona Plasma Discharge  

Science Journals Connector (OSTI)

Soft Plasma Polymerization of Gas State Precursors from an Atmospheric Pressure Corona Plasma Discharge ... Application of nonequilibrium plasmas in organic chemistry ...

P. Anthony F. Herbert; Liam O’Neill; Justyna Jaroszy?ska-Woli?ska

2009-09-11T23:59:59.000Z

75

E-Print Network 3.0 - atmospheric pressure measurements Sample...  

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

- School of Engineering Science, Simon Fraser University Collection: Engineering ; Energy Storage, Conversion and Utilization 8 CHAPTER 2. ATMOSPHERIC PRESSURE 2.1 MEASURING...

76

Etching polyimide with a nonequilibrium atmospheric-pressure plasma jet  

Science Journals Connector (OSTI)

An atmospheric-pressure plasma jet has been used to etch polyimide films at 1.0–8.0±0.2?? m/min at 760 Torr and between 50 and 250?°C. The plasma was produced by flowing helium and oxygen between two concentric electrodes with the inner one coupled to 13.56 MHz rf power and the outer one grounded. The etch rate increased with the O 2 partial pressure the rf power and the substrate temperature. The apparent activation energy for etching was 0.16 eV. Langmuir-probe measurements revealed that the ion densities were between 1×10 10 and 1×10 11 ? cm ?3 5 mm from the end of the powered electrode. Biasing the substrate had no effect on the rate. Ozone singlet sigma metastable oxygen (b? 1 ? g + ) and singlet delta metastable oxygen (a? 1 ? g ) were detected in the plasma by emission spectroscopy. More ozone was produced in the effluent through the recombination of O atoms with O 2 . Based on the production rate of O 3 the concentration of O atoms 6 mm from the powered electrode was estimated to be ?7×10 14 ? cm ?3 at 6.6 Torr O 2 and 200 W power. It is proposed that O atoms are the principal reactive species involved in etching polyimide.

J. Y. Jeong; S. E. Babayan; A. Schütze; V. J. Tu; J. Park; I. Henins; G. S. Selwyn; R. F. Hicks

1999-01-01T23:59:59.000Z

77

Inorganic Surface Nanostructuring by Atmospheric Pressure Plasma-Induced Graft Polymerization  

E-Print Network [OSTI]

Inorganic Surface Nanostructuring by Atmospheric Pressure Plasma-Induced Graft Polymerization a silicon surface was accomplished by atmospheric pressure (AP) hydrogen plasma surface activation followed. The formation of initiation sites was controlled by the plasma exposure period, radio frequency (rf) power

Hicks, Robert F.

78

PPPL-3281, Preprint: January 1998, UC-426 Synthesis of Ozone at Atmospheric Pressure  

E-Print Network [OSTI]

-coupled plasma (ICP) torch to synthesize ozone at atmospheric pressure is explored. Ozone concentrations up1 PPPL-3281, Preprint: January 1998, UC-426 Synthesis of Ozone at Atmospheric Pressure by a Quenched Induction-Coupled Plasma Torch B.C. Stratton1, R. Knight2, and D.R. Mikkelsen1, A. Blutke3, and J

79

Influence of dissociative recombination on the LTE of argon high-frequency plasmas at atmospheric pressure  

E-Print Network [OSTI]

) model that we developed for an argon microwave (2.45 GHz) plasma at atmospheric pressure. This model-1- Influence of dissociative recombination on the LTE of argon high-frequency plasmas at atmospheric pressure A. Sáinz1 , J. Margot2 , M. C. García1 , M. D. Calzada1 1 Grupo de Espectroscopía de

Boyer, Edmond

80

Inactivation of Salmonella Enteritidis PT 30 on Almonds with a Fluidized Bed Atmospheric Pressure Plasma  

E-Print Network [OSTI]

investigated the use of a fluidized bed atmospheric pressure plasma (APP) as a possible pasteurization methodInactivation of Salmonella Enteritidis PT 30 on Almonds with a Fluidized Bed Atmospheric Pressure Plasma Kalyani Narayanan1, Nathan M. Anderson2, Gregory J. Fleischman2 and Susanne Keller2 1Institute

Heller, Barbara

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Electrochemical migration of Ag nanoink patterns controlled by atmospheric-pressure plasma  

Science Journals Connector (OSTI)

Highly contrasting surface energies were induced on polyimide (PI) substrates using atmospheric-pressure plasma (APP) to allow precise printing of Ag electrodes that showed mitigated electrochemical migration (ECM). The substrate surface was made uniformly ... Keywords: Atmospheric-pressure plasma, Dendritic growth, Electrochemical migration (ECM), Inkjet printing, Silver nanoink

Kwang-Seok Kim; Young-Tae Kwon; Yong-Ho Choa; Seung-Boo Jung

2013-06-01T23:59:59.000Z

82

Ultrahigh?Frequency Discharge in Atmospheric?Pressure Gas  

Science Journals Connector (OSTI)

A 2469 MHz discharge was generated at an open end of a coaxial waveguide through which atmospheric?pressure gas flowed. Argon served as a plasma?forming gas hydrogen and calcium as probe elements for the measurement of electron density and gas temperature respectively and sodium as a seed for increasing electron density. The density of excited hydrogen atoms the excitation temperature the electron density the ionizationtemperature and the gas temperature were measured at operating powers of 50 200 and 400 W. The plasma in the close vicinity of the electrode (0 to 0.5 mm from the terminus of the inner conductor) was not in the local thermal equilibrium at any power level investigated independently of the sodium seeding. At a distance between 1 and 3 mm from the electrode on the contrary the nonseeded plasma approached the local thermal equilibrium when the power was increased while the seeded plasma exhibited a deviation from the local thermal equilibrium. The deviation from the local thermal equilibrium in the nonseeded plasma can be interpreted to be due to inhomogeneity of the plasma. In the outer zone of the seeded plasma the excitation temperature was equal to the gas temperature but not to the ionizationtemperature. A separation of plasma components occurred which was depressed by the sodium seeding.

Seiichi Murayama

1968-01-01T23:59:59.000Z

83

Experimental evidence of chaotic behavior in atmospheric pressure arc discharge  

SciTech Connect (OSTI)

Thermal plasma technology is already playing an important role in the production of new materials, in the destruction of toxic wastes, and in the development of safer and more efficient manufacturing and material processing applications. In free burning as well as in stabilized arc columns, the inherent movement of arc root results in fluctuation in arc voltage. A full knowledge and control over the arc root dynamics can effectively lengthen the life time, drastically improve performance and reliability in arc plasma devices. In this paper, the authors experimentally investigate the fluctuating voltage signals generated from an atmospheric pressure arc discharge produced in a hollow electrode plasma torch. For the first time, analysis of these signals reveal them to exhibit chaotic behavior. The present analysis is supported with real time behavior, phase portraits, power spectra and Lyapunov exponents. Dependence of system behavior on various control parameters is also investigated. This approach is interesting in the sense that it can lead to better understanding of physics for future researches on arc plasma jets and related devices.

Ghorui, S.; Sahasrabudhe, S.N.; Murthy, P.S.S.; Das, A.K.; Venkatramani, N.

2000-02-01T23:59:59.000Z

84

water pipeline gallery  

Science Journals Connector (OSTI)

water pipeline gallery, water pipeline drift; water pipeline tunnel (US) ? Wasserleitungsrohrstollen m

2014-08-01T23:59:59.000Z

85

Atmospheric Pressure Humid Argon DBD Plasma for the Application of Sterilization -Measurement and Simulation of Hydrogen, Oxygen, and Hydrogen  

E-Print Network [OSTI]

Atmospheric Pressure Humid Argon DBD Plasma for the Application of Sterilization - Measurement, sterilization I. INTRODUCTION Non-thermal plasma technology at atmospheric pressure using oxygen of atmospheric pressure non-thermal argon plasma produced by a variety of techniques has recently begun

Paris-Sud XI, Université de

86

Diamond and Related Materials, 2 (1993) 661 666 661 Degenerate four-wave mixing diagnostics of atmospheric pressure  

E-Print Network [OSTI]

application of this new spectroscopic technique to an atmospheric pressure plasma synthesis reactor. DFWM synthesis at atmospheric pressure have been performed using an r.f. inductively coupled plasma torch [1 of atmospheric pressure diamond deposition T. G. Owano and C. H. Kruger Iti~'4h7~,mperatureGasdynamies Laboratory

Zare, Richard N.

87

Composite repair of pipelines, considering the effect of live pressure-analytical and numerical models with respect to ISO/TS 24817 and ASME PCC-2  

Science Journals Connector (OSTI)

Abstract Wrapping composite material around the defected pipe is a recent method in pipeline rehabilitation. ISO-24817 and ASME PCC-2 are the only available design codes for the design of this repair system. For the case when the corroded pipe contributes to the load carrying capacity, the two codes suggest calculating the repair thickness for a special design pressure based on the pipe diameter, remaining wall thickness, pipe and composite material properties, composite allowable strain, and the live pressure, which is the internal pressure in the pipe at the time of repair application. In this study, a range of design scenarios are modelled using analytical equations and finite element method in order to assess the validity of including live pressure in the design. Results indicate that the repair thickness is independent of the live pressure and hence an appropriate modification is proposed to the existing design equation.

Nariman Saeed; Hamid Ronagh; Amandeep Virk

2014-01-01T23:59:59.000Z

88

Hydrogen Permeability and Integrity of Hydrogen Delivery Pipelines...  

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

of hydrogen permeation behavior and its impact on hydrogen embrittlement of pipeline steels under high gaseous pressures relevant to hydrogen gas transmission pipeline...

89

Augmented survival of Neisseria gonorrhoeae within biofilms: exposure to atmospheric pressure non-thermal plasmas  

Science Journals Connector (OSTI)

Bacteria embedded within biofilms present a challenge to surface decontamination by conventional means. Atmospheric pressure non-thermal plasma processes have emerged as a promising approach to overcoming this pr...

L. Xu; Y. Tu; Y. Yu; M. Tan; J. Li; H. Chen

2011-01-01T23:59:59.000Z

90

Effects of atmospheric-pressure non-thermal plasma jets on enzyme solutions  

Science Journals Connector (OSTI)

In order to study the wide scope of structural information of biomolecules in the presence of biocompatible cold atmospheric pressure plasma jets (CAPJ), we used circular dichroism (CD) and fluorescence experi...

Pankaj Attri; Pannuru Venkatesu; Nagendra Kaushik…

2012-03-01T23:59:59.000Z

91

Non-thermal atmospheric pressure plasmas as a novel candidate for preventive therapy of melanoma  

Science Journals Connector (OSTI)

Due to the increased ultraviolet radiation, the incidence of melanoma is increasing worldwide more than that of any other cancer. In this study, the effects of irradiation of non-thermal atmospheric pressure plasmas

Yasuhiro Omata; Machiko Iida; Ichiro Yajima…

2014-09-01T23:59:59.000Z

92

Inactivation of Microorganisms in Model Biofilms by an Atmospheric Pressure Pulsed Non-thermal Plasma  

Science Journals Connector (OSTI)

Non-thermal plasma jet formed by self-running pulsed-periodical ... current spark generator (PPSG) was used for atmospheric pressure inactivation of microorganisms including biofilms. A ... the PPSG is a formatio...

Yuri Akishev; N. Trushkin; M. Grushin…

2012-01-01T23:59:59.000Z

93

Atmospheric Pressure Plasma Treatment of Fused Silica, Related Surface and Near-Surface Effects and Applications  

Science Journals Connector (OSTI)

We report on an atmospheric pressure plasma (APP) treatment of fused silica and its related surface and near-surface effects. Such treatment was performed in order to improve laser ... process gas was used. By th...

Christoph Gerhard; Tobias Weihs; Daniel Tasche…

2013-10-01T23:59:59.000Z

94

Modeling Studies of Atmospheric Pressure Microplasmas: Plasma Dynamics, Surface Interaction and Applications.  

E-Print Network [OSTI]

??Technologies based on atmospheric-pressure microplasmas (APMs) have been widely developed due to the unique nature microplasmas being non-equilibrium and its ability to operate stably at… (more)

Wang, Jun-Chieh

2014-01-01T23:59:59.000Z

95

Surface modification and aging effect of polysulfonamide yarns treated by atmospheric pressure plasma  

Science Journals Connector (OSTI)

The effect of atmospheric pressure plasma treatment on wettability and dyeability of polysulfonamide ... were investigated. The helium and helium/oxygen plasma-treated PSA yarns were stored for different...K/S......

C. X. Wang; J. C. Lv; D. W. Gao; G. L. Liu; L. M. Jin; J. H. Liu

2013-09-01T23:59:59.000Z

96

The Chemistry of Methane Remediation by a Non?thermal Atmospheric Pressure Plasma  

Science Journals Connector (OSTI)

The destruction of methane by a non?thermal plasma in atmospheric pressure gas streams of nitrogen with variable ... determined by on?line FTIR spectroscopy and the plasma chemistry is interpreted using kinetic m...

Kirsty J. Pringle; J. Christopher Whitehead…

2004-09-01T23:59:59.000Z

97

Surface Nanostructuring of Polysulfone Membranes by Atmospheric Pressure Plasma-Induced Graft Polymerization (APPIGP).  

E-Print Network [OSTI]

??Surface nano-structuring of polysulfone (PSf) membrane surrogate surfaces was accomplished by grafting hydrophilic polymers, poly(methacrylic acid) (PMAA) and poly(acrylic acid) (PAA), using the atmospheric pressure… (more)

Kim, Soo Min

2013-01-01T23:59:59.000Z

98

Spatial Characterization of the Atmospheric-Pressure Moderate-Power He Microwave-Induced Plasma  

Science Journals Connector (OSTI)

Three-dimensional emission profiles of several metallic and nonmetallic elements from a moderate-power (450 W) atmospheric-pressure helium microwave-induced plasma (He MIP) are...

Pak, Yong-Nam; Koirtyohann, S R

1991-01-01T23:59:59.000Z

99

Atmospheric-pressure plasma treatment of ultra-high-molecular-weight polypropylene fabric  

Science Journals Connector (OSTI)

Effects of an atmospheric pressure surface discharge on a woven ultrahigh molecular weight polyethylene fabric were studied. Our results show that the surface discharge can be used to achieve a higher long-ter...

J. Ráhel’; M. ?ernák; I. Hudec; A. Brablec; D. Trunec…

2000-03-01T23:59:59.000Z

100

Differential laser absorption spectroscopy of uranium in an atmospheric pressure laser-induced plasma  

Science Journals Connector (OSTI)

A two-beam differential laser absorption technique is used to measure U238 absorption spectra with high signal-to-noise ratios in an atmospheric pressure laser-induced plasma....

Taylor, N R; Phillips, M C

2014-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Electrical Features of Radio-frequency, Atmospheric-pressure, Bare-metallic-electrode Glow Discharges  

Science Journals Connector (OSTI)

Radio-frequency (RF), atmospheric-pressure glow discharge (APGD) plasmas with bare metallic electrodes have promising prospects in the fields of plasma-aided etching, deposition, disinfection and sterilization, ....

He-Ping Li; Wen-Ting Sun; Hua-Bo Wang; Guo Li…

2007-10-01T23:59:59.000Z

102

Decontamination of VX Surrogate Malathion by Atmospheric Pressure Radio-frequency Plasma Jet  

Science Journals Connector (OSTI)

Decontamination of the VX surrogate (malathion) by the atmospheric pressure radio-frequency plasma jet (APPJ) was investigated. Optical emission ... the neutral gas temperature. The effects of RF input power and ...

Wen-Chao Zhu; Bai-Rong Wang; Hai-Ling Xi…

2010-06-01T23:59:59.000Z

103

Inactivation of microbes and macromolecules by atmospheric-pressure plasma jets  

Science Journals Connector (OSTI)

Plasma is ionized gas, which is found in ... be generated artificially. A variety of cold atmospheric-pressure plasmas are currently being investigated for their clinical ... reporting on the treatment of patient...

Jan-Wilm Lackmann; Julia Elisabeth Bandow

2014-07-01T23:59:59.000Z

104

Study of the specific features of pulsed-plasma generation in air at atmospheric pressure  

Science Journals Connector (OSTI)

The structural scheme and operational characteristics of a pulse-plasma device generating a pulsed plasma in air at atmospheric pressure are presented. The functional scheme and ... given. It is shown that the pu...

Ya. A. Chivel’; O. O. Kuznechik…

2011-09-01T23:59:59.000Z

105

Antistatic effect of atmospheric pressure glow discharge cold plasma treatment on textile substrates  

Science Journals Connector (OSTI)

Hydrophobic synthetic textile substrates, nylon and polyester fabrics, were continuously treated in an atmospheric-pressure-glow-discharge-cold-plasma reactor using He and air. The samples ... charge decay time. ...

Kartick Kumar Samanta; Manjeet Jassal; Ashwini K. Agrawal

2010-06-01T23:59:59.000Z

106

Carbon nanostructures production by AC arc discharge plasma process at atmospheric pressure  

Science Journals Connector (OSTI)

Carbon nanostructures have received much attention for a wide range of applications. In this paper, we produced carbon nanostructures by decomposition of benzene using AC arc discharge plasma process at atmospheric pressure. Discharge was carried out ...

Shenqiang Zhao; Ruoyu Hong; Zhi Luo; Haifeng Lu; Biao Yan

2011-01-01T23:59:59.000Z

107

Functionalization of Cotton by In-Situ Reaction of Styrene in Atmospheric Pressure Plasma Zone  

Science Journals Connector (OSTI)

Cotton fabric was treated using styrene/helium glow plasma at the atmospheric pressure. After the treatment, the substrate ... and frequency, on fragmentation of styrene inside plasma zone was investigated using ...

Dambarudhar Parida; Manjeet Jassal…

2012-12-01T23:59:59.000Z

108

Radial characterisation of the helium plasma produced by the axial injection torch (TIA) at atmospheric pressure  

Science Journals Connector (OSTI)

This work presents the radial characterisation of a helium plasma produced by the “Torch à Injection Axiale ... using a collisional-radiative model for helium at atmospheric pressure, the electronic density and e...

R. Álvarez; A. Rodero; M. C. Quintero

2000-03-01T23:59:59.000Z

109

Water permeability of quarry stone superficially modified by plasma polymerization of hexamethyldisiloxane at atmospheric pressure  

Science Journals Connector (OSTI)

The surface of quarry stone was modified with a thin film of plasma-polymerized hexamethyldisiloxane (PPHMDSO) deposited at atmospheric pressure. The surface of the treated stone...3 and Si-CH3 bands characterist...

J. Antonio López-Barrea…

2014-07-01T23:59:59.000Z

110

Interactions of Non-Thermal Atmospheric Pressure Plasma with Solid and Liquid Food Systems: A Review  

Science Journals Connector (OSTI)

Non-equilibrium atmospheric pressure plasma processes combine several advantages such as non- ... science and technology dealing with the application of plasma processes on solid and liquid foodstuff. Starting wi...

Björn Surowsky; Oliver Schlüter; Dietrich Knorr

2014-07-01T23:59:59.000Z

111

Surface free energy changes of stainless steel after one atmospheric pressure plasma treatment  

Science Journals Connector (OSTI)

Stainless steel plates (AISI 304L) were treated by an atmospheric pressure plasma treatment at room temperature in order to modify the surface properties. After plasma treatment, the surface wettability and the s...

Shen Tang; Oh-June Kwon; Na Lu; Ho-Suk Choi

2004-12-01T23:59:59.000Z

112

Attenuation of Electromagnetic Waves by a Plasma Layer at Atmospheric Pressure  

Science Journals Connector (OSTI)

Plasma layers at atmospheric pressure, are good broad band absorbers of ... have to be optimized. These are the plasma number density, and the thickness of the plasma layer. It is found that in order ... an effec...

Mounir Laroussi; William T. Anderson

1998-03-01T23:59:59.000Z

113

The Plasma Flame: Development and Application of a Hybrid Plasma at Atmospheric Pressure.  

E-Print Network [OSTI]

??The focus of this work was to develop a hybrid plasma at atmospheric pressure, which we have deemed the “plasma flame†. This discharge is… (more)

King, Matthew Russell

2009-01-01T23:59:59.000Z

114

The Surface-Pressure Signature of Atmospheric Tides in Modern Climate Models  

E-Print Network [OSTI]

Although atmospheric tides driven by solar heating are readily detectable at the earth’s surface as variations in air pressure, their simulations in current coupled global climate models have not been fully examined. This ...

Covey, Curt

115

Plasma Grooving System Using Atmospheric Pressure Surface Discharge Plasma  

Science Journals Connector (OSTI)

To fabricate narrow front contact grooves on a single crystalline silicon solar cell, we carried out etching of a silicon nitride film on a silicon substrate using the surface discharge plasma operated at atmospheric

Toshiyuki Hamada; Tatsuya Sakoda; Masahisa Otsubo

2009-06-01T23:59:59.000Z

116

On-line SiOx coating of extruded polystyrene sheets utilizing atmospheric pressure plasma treatment  

Science Journals Connector (OSTI)

Coating of polystyrene sheets with SiOx layer was performed by employing an atmospheric pressure plasma device. Mixtures of hexamethyldisiloxane with different compositions of carrier gas based on synthetic air, oxygen, and/or nitrogen were ... Keywords: atmoshperic pressure plasma, coating deposition, hexamethyldisiloxane, polystyrene, sheet extrusion, surface treatment

O. Hudecek; T. Sedlacek; A. Minarik; P. Saha

2011-07-01T23:59:59.000Z

117

Abstract The present study uses increased atmospheric pressure as an ethanol antagonist to test the hypothesis  

E-Print Network [OSTI]

Abstract The present study uses increased atmospheric pressure as an ethanol antagonist to test for ethanol. This was accomplished using behavioral and in vitro mea- sures to determine the effects of pressure on ethanol and other GABAergic drugs in C57BL/6 and LS mice. Be- haviorally, exposure to 12 times

Brinton, Roberta Diaz

118

Gas breakdown in an atmospheric pressure radio-frequency capacitive plasma source  

Science Journals Connector (OSTI)

Gas breakdown is studied in an atmospheric pressure rf capacitive plasma source developed for materials applications. At a rf frequency of 13.56 MHz breakdown voltage is largely a function of the product of the pressure and the discharge gap spacing approximating the Paschen curve. However breakdown voltage varies substantially with rf frequency due to a change in the electron loss mechanism. A large increase in breakdown voltage is observed when argon oxygen or nitrogen is added to helium despite their lower ionization potential. Discussion is given for optimal breakdown conditions at atmospheric pressure.

Jaeyoung Park; I. Henins; H. W. Herrmann; G. S. Selwyn

2001-01-01T23:59:59.000Z

119

Influence of Penning effect on the plasma features in a non-equilibrium atmospheric pressure plasma jet  

E-Print Network [OSTI]

Influence of Penning effect on the plasma features in a non-equilibrium atmospheric pressure plasma 2014 23:18:06 #12;Influence of Penning effect on the plasma features in a non-equilibrium atmospheric March 2014) Non-equilibrium atmospheric pressure plasma jet (APPJ) is a cold plasma source that promises

Zexian, Cao

120

Framework of pipeline integrity management  

Science Journals Connector (OSTI)

Pipeline integrity is the cornerstone of many industrial and engineering systems. This paper provides a review and analysis of pipeline integrity that will support professionals from industry who are investigating technical challenges of pipeline integrity. In addition, it will provide an overview for academia to understand the complete picture of pipeline integrity threats and techniques to deal with these threats. Pipeline threats are explained and failures are classified. Design practices are discussed using pressure criteria. Inspection techniques are studied and used as a basis for describing the corresponding integrity assessment techniques, which are linked with integrity monitoring and maintenance criteria. Finally, pipeline integrity management system design is presented using activity models, process models, and knowledge structures. The paper will be useful for further development of automated tools to support pipeline integrity management.

Hossam A. Gabbar; Hossam A. Kishawy

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Pipelines (Minnesota) | Department of Energy  

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

Pipelines (Minnesota) Pipelines (Minnesota) Pipelines (Minnesota) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Tribal Government Low-Income Residential Schools Retail Supplier Institutional Multi-Family Residential Systems Integrator Fuel Distributor Nonprofit General Public/Consumer Transportation Program Info State Minnesota Program Type Siting and Permitting This section regulates pipelines that are used to carry natural or synthetic gas at a pressure of more than 90 pounds per square inch, along with pipelines used to carry petroleum products and coal. Special rules apply to pipelines used to carry natural gas at a pressure of more than 125

122

Study of a dual frequency atmospheric pressure corona plasma  

Science Journals Connector (OSTI)

Radio frequency mixing of 2 and 13.56 MHz was investigated by performing experimental measurements on the atmospheric pressurecoronaplasma. As a result of the dual frequency length current density and electron excitation temperature of the plasma were increased while the gas temperature was maintained at roughly the same level when compared to the respective single frequency plasmas. Moreover observation of time-resolvedimages revealed that the dual frequency plasma has a discharge mode of 2 MHz positive streamer 2 MHz negative glow and 13.56 MHz continuous glow.

Dan Bee Kim; S. Y. Moon; H. Jung; B. Gweon; Wonho Choe

2010-01-01T23:59:59.000Z

123

Pool boiling heat transfer enhancement over cylindrical tubes with water at atmospheric pressure, Part I: Experimental results  

E-Print Network [OSTI]

Pool boiling heat transfer enhancement over cylindrical tubes with water at atmospheric pressure online 4 May 2013 Keywords: Pool boiling Heat transfer enhancement Open microchannels Cylindrical tube boiling heat transfer over enhanced cylindrical microchannel test surfaces with water at atmospheric

Kandlikar, Satish

124

Plasma-Assisted Reduction of Graphene Oxide at Low Temperature and Atmospheric Pressure for Flexible Conductor Applications  

Science Journals Connector (OSTI)

Plasma-Assisted Reduction of Graphene Oxide at Low Temperature and Atmospheric Pressure for Flexible Conductor Applications ... The method allows rapid deoxygenation of bulk graphite oxide (GO) in an atmosphere of ... ...

Seung Whan Lee; Cecilia Mattevi; Manish Chhowalla; R. Mohan Sankaran

2012-02-22T23:59:59.000Z

125

Characteristics of radio-frequency, atmospheric-pressure glow discharges with air using bare metal electrodes  

SciTech Connect (OSTI)

In this letter, an induced gas discharge approach is proposed and described in detail for obtaining a uniform atmospheric-pressure glow discharge with air in a {gamma} mode using water-cooled, bare metal electrodes driven by radio-frequency (13.56 MHz) power supply. A preliminary study on the discharge characteristics of the air glow discharge is also presented in this study. With this induced gas discharge approach, radio-frequency, atmospheric-pressure glow discharges using bare metal electrodes with other gases which cannot be ignited directly as the plasma working gas, such as nitrogen, oxygen, etc., can also be obtained.

Wang Huabo; Sun Wenting; Li Heping; Bao Chengyu; Zhang Xiaozhang [Department of Engineering Physics, Tsinghua University, Beijing 100084 (China)

2006-10-16T23:59:59.000Z

126

Atmospheric-pressure argon/oxygen plasma-discharge source with a stepped electrode  

SciTech Connect (OSTI)

The nonequilibrium glow discharge in argon mixed with oxygen at atmospheric pressure was generated in a parallel plate reactor with a stepped electrode powered by a 13.56 MHz radio-frequency power supplier. The stepped-electrode reactor consists of a narrow and wide gap structure. A strong electric field occurred at the narrow gap region preionizes Ar/O{sub 2} gas and assists to generate a large volumetric plasma in the wide gap region. Therefore, the stepped-electrode reactor makes it easy to operate Ar/O{sub 2} glow discharge, providing a stable, uniform, and broad plasma jet at atmospheric pressure.

Lim, Jin-Pyo; Uhm, Han S.; Li Shouzhe [Department of Molecular Science and Technology, Ajou University, San 5 Wonchon-Dong, Youngtong-Gu, Suwon 443-749 (Korea, Republic of); State Key Laboratory of Materials Modification by Laser, Ion and Electron Beams and Department of Physics, Dalian University of Technology, Dalian 116024 (China)

2007-01-29T23:59:59.000Z

127

The viscosity of liquids (a) Normal octanol at atmospheric pressure (b) An equipment for high pressures.  

E-Print Network [OSTI]

??Theories of Liquid Viscosity lead to equations giving the variation of the viscosity with temperature and pressure, but give poor agreement with experimental values, particularly… (more)

De Verteuil, Georges Francois

2012-01-01T23:59:59.000Z

128

Atmospheric pressure plasma chemical vapor deposition system for high-rate deposition of functional materials  

Science Journals Connector (OSTI)

The atmospheric pressure plasmachemical vapor deposition(CVD) system has been developed to fabricate functional thin films at very high deposition rate. The atmospheric pressure plasma in which high-density radicals are created has been effectively used to depositthin films. Combination of the newly designed rotary electrode and the 150 MHz very high frequency power supply makes it possible not only to generate the high-density atmospheric pressure plasma but also to avoid ion bombardment against the film. By virtue of these noble characteristics of the system high quality films can be fabricated at an unprecedented high deposition rate. In order to demonstrate the effectiveness of the atmospheric pressure plasmaCVD system hydrogenated amorphous silicon (a- Si:H ) films were prepared in gas mixtures containing He H 2 and SiH 4 . The results showed that homogeneous a- Si:H films grew when substrates were heated at 200?°C. Extremely high deposition rate which was more than 100 times faster than that of the conventional low-pressure plasma CVD technique was realized.

Y. Mori; K. Yoshii; H. Kakiuchi; K. Yasutake

2000-01-01T23:59:59.000Z

129

Propagating buckles in corroded pipelines  

Science Journals Connector (OSTI)

Rigid–plastic solutions for the steady-state, quasi-static buckle propagation pressure in corroded pipelines are derived and compared to finite element predictions (ABAQUS). The corroded pipeline is modeled as an infinitely long, cylindrical shell with a section of reduced thickness that is used to describe the corrosion. A five plastic hinge mechanism is used to describe plastic collapse of the corroded pipeline. Closed-form expressions are given for the buckle propagation pressure as a function of the amount of corrosion in an X77 steel pipeline. Buckles that propagate down the pipeline are caused by either global or snap-through buckling, depending on the amount of corrosion. Global buckling occurs when the angular extent of the corrosion is greater than 90°. When the angular extent is less than 90° and the corrosion is severe, snap-through buckling takes place. The buckle propagation pressure and the corresponding collapse modes also compare well to finite element predictions.

Michelle S. Hoo Fatt; Jianghong Xue

2001-01-01T23:59:59.000Z

130

Deposition of yttria-stabilized zirconia thermal barrier coatings by laser-assisted plasma coating at atmospheric pressure.  

E-Print Network [OSTI]

??This thesis details the design and construction of a microwave generation system, and a coaxial cylindrical plasma torch, where an atmospheric-pressure plasma (APP) can be… (more)

Ouyang, Zihao

2011-01-01T23:59:59.000Z

131

Study of atmospheric pressure weakly ionized plasma as surface compatibilization technique for improved plastic composites loaded with cellulose based fillers .  

E-Print Network [OSTI]

??Atmospheric pressure plasmas have gained considerable interest from researchers recently for their unique prospective of engineering surfaces with plasma without the need of vacuum systems.… (more)

[No author

2013-01-01T23:59:59.000Z

132

Keratinocyte and Hepatocyte Growth Proliferation and Adhesion to Helium and Helium/Oxygen Atmospheric Pressure Plasma Treated Polyethylene Terephthalate.  

E-Print Network [OSTI]

??To improve the surface properties of biomaterials, the effects of changes in surface chemistry and morphology of polyethylene terephthalate (PET) films treated with atmospheric pressure… (more)

Christie, Megan Allison

2006-01-01T23:59:59.000Z

133

Surface atmospheric pressure excitation of the translational mode of the inner core  

E-Print Network [OSTI]

Using hourly atmospheric surface pressure field from ECMWF (European Centre for Medium-Range Weather Forecasts) and from NCEP (National Centers for Environmental Prediction) Climate Forecast System Reanalysis (CFSR) models, we show that atmospheric pressure fluctuations excite the translational oscillation of the inner core, the so-called Slichter mode, to the sub-nanogal level at the Earth surface. The computation is performed using a normal-mode formalism for a spherical, self-gravitating anelastic PREM-like Earth model. We determine the statistical response in the form of power spectral densities of the degree-one spherical harmonic components of the observed pressure field. Both hypotheses of inverted and non-inverted barometer for the ocean response to pressure forcing are considered. Based on previously computed noise levels, we show that the surface excitation amplitude is below the limit of detection of the superconducting gravimeters, making the Slichter mode detection a challenging instrumental task...

Rosat, Séverine; Rogister, Yves

2014-01-01T23:59:59.000Z

134

Application of non-thermal atmospheric pressure ac plasmas to the carbon dioxide reforming of methane  

Science Journals Connector (OSTI)

Methane conversions of 11.9%, yields of hydrogen as high as 23.3% and energy yields of 1.0 mol H2/kWh have been achieved from CO2 reforming of CH4 in non-thermal, atmospheric pressure plasma reactors with Pt coat...

Stephanie L. Brock; Tomoko Shimojo; Steven L. Suib…

135

Modification of Glassy Carbon Surfaces by an Atmospheric Pressure Cold Plasma H. Mortensen 1  

E-Print Network [OSTI]

Modification of Glassy Carbon Surfaces by an Atmospheric Pressure Cold Plasma Torch H. Mortensen 1. Bindslev 1 1 Optics and Plasma Research Department, 2 Danish Polymer Centre, 3 Materials Research/FAX: +45-4677-4532/+45-4677-4565. E-mail: henrik.junge.mortensen@risoe.dk Plasma treatment of glassy carbon

136

Relation between plasma plume density and gas flow velocity in atmospheric pressure plasma  

SciTech Connect (OSTI)

We have studied atmospheric pressure plasma generated using a quartz tube, helium gas, and copper foil electrode by applying RF high voltage. The atmospheric pressure plasma in the form of a bullet is released as a plume into the atmosphere. To study the properties of the plasma plume, the plasma plume current is estimated from the difference in currents on the circuit, and the drift velocity is measured using a photodetector. The relation of the plasma plume density n{sub plu}, which is estimated from the current and the drift velocity, and the gas flow velocity v{sub gas} is examined. It is found that the dependence of the density on the gas flow velocity has relations of n{sub plu} ? log(v{sub gas}). However, the plasma plume density in the laminar flow is higher than that in the turbulent flow. Consequently, in the laminar flow, the density increases with increasing the gas flow velocity.

Yambe, Kiyoyuki; Taka, Shogo; Ogura, Kazuo [Graduate School of Science and Technology, Niigata University, Niigata 950-2181 (Japan)] [Graduate School of Science and Technology, Niigata University, Niigata 950-2181 (Japan)

2014-04-15T23:59:59.000Z

137

diamond pipeline  

Science Journals Connector (OSTI)

the various steps through, which a diamond passes from production to marketing not including the end consumer. Also called diamond chain , pipeline ...

2009-01-01T23:59:59.000Z

138

Modeling of atmospheric-pressure plasma columns sustained by surface waves  

Science Journals Connector (OSTI)

A self-consistent two-dimensional fluid-plasma model coupled to Maxwell’s equations is presented for argon discharges sustained at atmospheric pressure by the propagation of an electromagnetic surface wave. The numerical simulation provides the full axial and radial structure of the surface-wave plasma column and the distribution of the electromagnetic fields for given discharge operating conditions. To describe the contraction phenomenon, a characteristic feature of high-pressure discharges, we consider the kinetics of argon molecular ions in the charged-particle balance. An original feature of the model is to take into account the gas flow by solving self-consistently the mass, momentum, and energy balance equations for neutral particles. Accounting for the gas flow explains reported discrepancies between measured and calculated plasma parameters when assuming the local axial uniformity approximation. In contrast to the low-pressure case, the latter approximation is shown to be of limited validity at atmospheric pressure. The gas temperature is found to be a key parameter in modeling surface-wave discharges sustained at atmospheric pressure. It determines the radial and the axial structure of the plasma column. The calculated plasma parameters and wave propagation characteristics using the present two-dimensional fluid model are in good agreement with our set of experimental data.

Y. Kabouzi; D. B. Graves; E. Castaños-Martínez; M. Moisan

2007-01-09T23:59:59.000Z

139

Pipeline Safety Research, Development and Technology  

Energy Savers [EERE]

Pipeline and Hazardous Materials Safety Administration Replacing Hydrotesting? * Why hydro? What benefits? - Pressure & Spike Tests * Can ILI tools in concert with leak...

140

Dynamics of plasma expansion and shockwave formation in femtosecond laser-ablated aluminum plumes in argon gas at atmospheric pressures  

E-Print Network [OSTI]

plasma expansion into a background gas at atmospheric pressure is cru- cial for many engineeringDynamics of plasma expansion and shockwave formation in femtosecond laser-ablated aluminum plumes in argon gas at atmospheric pressures Alexander Miloshevsky, Sivanandan S. Harilal, Gennady Miloshevsky

Harilal, S. S.

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Hydrogen Permeability and Integrity of Hydrogen Delivery Pipelines  

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

Permeability and Permeability and Integrity of Hydrogen Delivery Pipelines Z. Feng*, L.M. Anovitz*, J.G. Blencoe*, S. Babu*, and P. S. Korinko** * Oak Ridge National Laboratory * Savannah River National Laboratory August 30, 2005 2 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY Partners and Collaborators * Oak Ridge National Laboratory - Project lead * Savannah River National Laboratory - Low H 2 pressure permeation test * Edison Welding Institute - Pipeline materials * Lincoln Electric Company - Welding electrode and weld materials for pipelines * Trans Canada - Commercial welding of pipelines and industry expectations * DOE Pipeline Working Group and Tech Team activities - FRP Hydrogen Pipelines - Materials Solutions for Hydrogen Delivery in Pipelines - Natural Gas Pipelines for Hydrogen Use

142

Sulfur capture by oil shale ashes under atmospheric and pressurized FBC conditions  

SciTech Connect (OSTI)

When oil shale contains large quantities of limestone, a significant auto-absorption of sulfur is possible under suitable conditions. The sulfur capture by oil shale ashes has been studied using a pressurized thermogravimetric apparatus. The chosen experimental conditions were typical for atmospheric and pressurized fluidized bed combustion. The Ca/S molar ratios in the two oil shales studied were 8 (Estonian) and 10 (Israeli). The samples were first burned in a gas atmosphere containing O{sub 2} and N{sub 2} (and CO{sub 2} if pressurized). After the combustion step, SO{sub 2} was added and sulfation started. The results with the oil shales were compared to those obtained with an oil shale cyclone ash from the Narva power plant in Estonia. In general, the results from the sulfur capture experiments under both atmospheric and pressurized conditions showed that the oil shale cannot only capture its own sulfur but also significant amounts of additional sulfur of another fuel if the fuels are mixed together. For example from the runs at atmospheric pressure, the conversion of CaO to CaSO{sub 4} was about 70% for Israeli oil shale and about 55% for Estonian oil shale (850 C). For the cyclone ash the corresponding conversion was about 20%. In comparison it could be mentioned that under the same conditions the conversions of natural limestones are about 30%. The reason the cyclone ash was a poor sulfur absorbent was probably due to its temperature history. In Narva the oil shale was burned at a significantly higher temperature (1,400 C) than was used in the experiments (750 C and 850 C). This caused the ash to sinter and the reactive surface area of the cyclone ash was therefore decreased.

Yrjas, K.P.; Hupa, M. [Aabo Akademi Univ., Turku (Finland). Dept. of Chemical Engineering; Kuelaots, I.; Ots, A. [Tallinn Technical Univ. (Estonia). Thermal Engineering Dept.

1995-12-31T23:59:59.000Z

143

Hydrogen permeability and Integrity of hydrogen transfer pipelines  

E-Print Network [OSTI]

Natural Gas Pipelines Hydrogen embrittlement What is the relevance to hydrogen pipelines? ORNL researchHydrogen permeability and Integrity of hydrogen transfer pipelines Team: Sudarsanam Suresh Babu, Z Pressure Permeation Testing) Hydrogen Pipeline R&D, Project Review Meeting Oak Ridge National Laboratory

144

Hydrogen Pipeline Working Group Workshop: Code for Hydrogen Pipelines...  

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

Pipeline Working Group Workshop: Code for Hydrogen Pipelines Hydrogen Pipeline Working Group Workshop: Code for Hydrogen Pipelines Code for Hydrogen Piping and Pipelines. B31...

145

Questions and Issues on Hydrogen Pipelines: Pipeline Transmission...  

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

Questions and Issues on Hydrogen Pipelines: Pipeline Transmission of Hydrogen Questions and Issues on Hydrogen Pipelines: Pipeline Transmission of Hydrogen Pipping of GH2 Pipeline....

146

Cold microplasma plume produced by a compact and flexible generator at atmospheric pressure  

SciTech Connect (OSTI)

In this letter, we report a cold microplasma generator at atmospheric pressure excited at 1 kHz in a pin to hole-electrode configuration by using soft materials partly. A nitrogen plasma plume with a length of more than 5 cm can be produced at low electrical power of 0.7 W without high feed gas pressure. The generator exhibits a compact structure with flexible property, which is suitable for treating thermally sensitive materials and biomedical materials, especially for delicate objects in an irregular confined space. Optical emission spectroscopy is used to spatially identify excited species in plasma plume.

Ni, T. L.; Ding, F.; Zhu, X. D.; Wen, X. H.; Zhou, H. Y. [CAS Key Laboratory of Basic Plasma Physics, Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)

2008-06-16T23:59:59.000Z

147

Atmospheric pressure spatial atomic layer deposition web coating with in situ monitoring of film thickness  

SciTech Connect (OSTI)

Spectral reflectometry was implemented as a method for in situ thickness monitoring in a spatial atomic layer deposition (ALD) system. Al{sub 2}O{sub 3} films were grown on a moving polymer web substrate at 100?°C using an atmospheric pressure ALD web coating system, with film growth of 0.11–0.13?nm/cycle. The modular coating head design and the in situ monitoring allowed for the characterization and optimization of the trimethylaluminum and water precursor exposures, purge flows, and web speed. A thickness uniformity of ±2% was achieved across the web. ALD cycle times as low as 76?ms were demonstrated with a web speed of 1?m/s and a vertical gap height of 0.5?mm. This atmospheric pressure ALD system with in situ process control demonstrates the feasibility of low-cost, high throughput roll-to-roll ALD.

Yersak, Alexander S.; Lee, Yung C. [Department of Mechanical Engineering, University of Colorado at Boulder, 1045 Regent Drive, 422 UCB, Boulder, Colorado 80309-0422 (United States); Spencer, Joseph A.; Groner, Markus D., E-mail: mgroner@aldnanosolutions.com [ALD NanoSolutions, Inc., 580 Burbank Street, Unit 100, Broomfield, Colorado 80020 (United States)

2014-01-15T23:59:59.000Z

148

Discharge characteristics of atmospheric-pressure radio-frequency glow discharges with argon/nitrogen  

SciTech Connect (OSTI)

In this letter, atmospheric-pressure glow discharges in {gamma} mode with argon/nitrogen as the plasma-forming gas using water-cooled, bare copper electrodes driven by radio-frequency power supply at 13.56 MHz are achieved. The preliminary studies on the discharge characteristics show that, induced by the {alpha}-{gamma} coexisting mode or {gamma} mode discharge of argon, argon-nitrogen mixture with any mixing ratios, even pure nitrogen, can be employed to generate the stable {gamma} mode radio-frequency, atmospheric-pressure glow discharges and the discharge voltage rises with increasing the fraction of nitrogen in the argon-nitrogen mixture for a constant total gas flow rate.

Wang Huabo; Sun Wenting; Li Heping; Bao Chengyu; Gao Xing; Luo Huiying [Department of Engineering Physics, Tsinghua University, Beijing 100084 (China); School of Public Health and Family Medicine, Capital University of Medical Sciences, Beijing 100069 (China); Beijing Center for Diseases Control and Prevention, Beijing 100013 (China)

2006-10-16T23:59:59.000Z

149

Ozone production by nanoporous dielectric barrier glow discharge in atmospheric pressure air  

SciTech Connect (OSTI)

This study is aimed at demonstrating plasma-chemical ozone production based on low temperature atmospheric pressure glow discharge through nanoporous dielectric barriers. The 20 kHz ac driven discharge is formed in air or oxygen gas flowing in the axial direction of the cylindrical plasma reactor containing four parallel aluminum rods covered with nanoporous alumina films. The discharge utilizing nanoporous dielectric barrier is more uniform and more energy efficient in ozone generation than the discharge through smooth-surface dielectric barriers.

Cho, J. H.; Koo, I. G.; Choi, M. Y.; Lee, W. M. [Department of Chemistry and Division of Energy Systems Research, Ajou University, Suwon 443-749 (Korea, Republic of)

2008-03-10T23:59:59.000Z

150

Polygeneration of Liquid Fuels and Electricity by the Atmospheric Pressure Hybrid Solar Gasification of Coal  

Science Journals Connector (OSTI)

(16, 17, 29, 30) The technical viability of the atmospheric pressure, windowed solar vortex reactor to gasify petroleum coke (petcoke) has been demonstrated on a small scale,(16, 29, 31) and a 300 kW pilot scale reactor has also been tested successfully. ... Inputs to the reactor were the model coal (as discussed above), nitrogen used for the carrier gas for the coal feed, steam used as a gasifying agent, and oxygen that is needed when ? gas turbine for electricity generation. ...

Ashok A. Kaniyal; Philip J. van Eyk; Graham J. Nathan; Peter J. Ashman; Jonathan J. Pincus

2013-05-20T23:59:59.000Z

151

On the Use of Atmospheric Pressure Plasma for the Bio-Decontamination of Polymers and Its Impact on Their Chemical and Morphological Surface Properties  

Science Journals Connector (OSTI)

Low temperature atmospheric pressure plasma processes can be applied to inactivate micro-...2 plasma of an atmospheric pressure plasma jet leads to an inactivation of Bacillus atrophaeus...spores with a maximum r...

K. Fricke; H. Tresp; R. Bussiahn; K. Schröder…

2012-08-01T23:59:59.000Z

152

PIPELINE INVENTORIES  

Science Journals Connector (OSTI)

Inventory that are in the transportation network, the distribution system, and intermediate stocking points are called . The higher the time for the materials to move through the pipeline the larger the pipel...

2000-01-01T23:59:59.000Z

153

Composites Technology for Hydrogen Pipelines  

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

Composites Technology Composites Technology for Hydrogen Pipelines Barton Smith, Barbara Frame, Larry Anovitz and Cliff Eberle Oak Ridge National Laboratory Pipeline Working Group Meeting Pipeline Working Group Meeting Aiken, South Carolina Aiken, South Carolina September 25-26, 2007 September 25-26, 2007 Managed by UT-Battelle for the Department of Energy 2 Managed by UT Battelle for the Department of Energy Presentation name - _ Composites Technology for Hydrogen Pipelines Fiber-reinforced polymer pipe Project Overview: Investigate application of has excellent burst and collapse composite, fiber-reinforced polymer pipeline pressure ratings, large tensile technology for hydrogen transmission and and compression strengths, and distribution. superior chemical and corrosion resistance. Long lengths can be

154

Micro-structured electrode arrays: atmospheric pressure plasma processes and applications  

Science Journals Connector (OSTI)

Micro-structured electrode (MSE) arrays allow to generate large-area uniform glow discharges over a wide pressure range up to atmospheric pressure. The electrode dimensions in the micro-range realized by means of modern micro-machining and galvanic techniques are small enough to generate sufficiently high electric field strengths to ignite gas discharges applying only moderate radio frequency (13.56 MHz) voltages (80–390 V in Ne, He, Ar and N2). The non-thermal plasma system is characterized by a special probe measuring the electric parameters. Possible industrial applications of the MSE arrays are plasma chemistry (e.g. waste gas decomposition) and surface modification of materials. Using an MSE based micro-reactor the abatement of the greenhouse gas CF4 was performed with decomposition rates of over 90% at a pressure of 100 mbar in He and N2. The decomposition of waste gases in the plasma was monitored online with quadrupole mass spectrometry. At atmospheric pressure in He the abatement rate of CF4 is still over 70%. Other applications realized in our lab are thin film deposition of diamond-like carbon layers and SiO2 layers on various substrates and sterilization of food packaging materials.

L. Baars-Hibbe; P. Sichler; C. Schrader; C. Geßner; K.-H. Gericke; S. Büttgenbach

2003-01-01T23:59:59.000Z

155

Pipeline Setback Ordinance (Minnesota)  

Broader source: Energy.gov [DOE]

This statute establishes the Office of Pipeline Safety to regulate pipelines in Minnesota. Among other duties, the office is responsible for implementing a Model Pipeline Setback Ordinance.

156

Comparative study on the atmospheric pressure plasma jets of helium and Xian-Jun Shao, Nan Jiang, Guan-Jun Zhang, and Ze-xian Cao  

E-Print Network [OSTI]

Comparative study on the atmospheric pressure plasma jets of helium and argon Xian-Jun Shao, Nan spectroscopy characterization of gaseous atmospheric pressure plasmas with 2 mm spatial resolution Rev. Sci study on the atmospheric pressure plasma jets of helium and argon Xian-Jun Shao,1 Nan Jiang,2 Guan

Zexian, Cao

157

A Validated Liquid Chromatography-Atmospheric Pressure Chemical Ionization-Tandem Mass Spectrometry Method for Quantitation of Cocaine and Benzoylecgonine in Human Plasma  

Science Journals Connector (OSTI)

......Chromatography-Atmospheric Pressure Chemical...Benzoylecgonine in Human Plasma Shen-Nan Lin 1...chromatography-atmospheric pressure chemical...benzoylecgonine in human plasma. | In order to...ValidatedLiquidChromatography-Atmospheric PressureChemicalIonization...benzoylecgonine in human plasma.Cocaine-dsand......

Shen-Nan Lin; David E. Moody; George E. Bigelow; Rodger L. Foltz

2001-10-01T23:59:59.000Z

158

Cathodic protection retrofit of an offshore pipeline  

SciTech Connect (OSTI)

Cathodic protection (CP) anodes and corrosion coating on two offshore pipelines were damaged during deep water installation. In-situ methods for deep-water inspection and repair of the pipelines` CP and coating systems were developed and used. High-pressure natural gas Pipeline. A design was 5.6 miles of 8.625 in. OD by 0.406 in. W.T. API SL, Grade X-42, seamless line pipe. Pipeline B design was 0.3 miles of similar specification pipe. Both pipelines were mill-coated with 14 mil of fusion-bonded epoxy (FBE) corrosion coating. Girth welds were field-coated with FBE.

Winters, R.H.; Holk, A.C. [Tenneco Energy, Houston, TX (United States)

1997-09-01T23:59:59.000Z

159

Generation of non-thermal plasma at atmospheric pressure in hetero-phase media of air with water aerosol  

Science Journals Connector (OSTI)

The results of experimental investigations on non-thermal plasma generation using of high-voltage discharge in hetero-phase media of airflow at atmospheric pressure with liquid aerosol are presented in...B. subti...

Yu. S. Akishev; G. I. Aponin; M. E. Grushin…

2006-10-01T23:59:59.000Z

160

E. coli, P. aeruginosa, and B. cereus Bacteria Sterilization Using Afterglow of Non-Thermal Plasma at Atmospheric Pressure  

Science Journals Connector (OSTI)

We developed and employed a new geometrical structure of dielectric barrier discharge in atmospheric pressure for bacterial broad spectrum sterilization. We utilized a plasma source having an AC power supply at.....

Farshad Sohbatzadeh; Abasalt Hosseinzadeh Colagar…

2010-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Atmospheric Pressure RF (13.56 MHz) Glow Discharge: Characterization and Application to “In Line” Waste Water Treatment  

Science Journals Connector (OSTI)

In this work the results obtained from the experimental study of an Atmospheric Pressure Glow Discharge (APGD) appear, generated in Helium (He) and dry air mixture by using a radio frequency (RF 13.56 MHz) pow...

Jaime B. Castro; Marlon H. Guerra-Mutis…

2003-06-01T23:59:59.000Z

162

The growth characteristics of microcrystalline Si thin film deposited by atmospheric pressure plasma-enhanced chemical vapor deposition  

Science Journals Connector (OSTI)

Microcrystalline silicon thin film was grown by atmospheric pressure plasma-enhanced chemical vapor deposition (AP-PECVD) ... with a cylindrical rotary electrode supplied with 150 MHz very-high-frequency power. T...

Jung-Dae Kwon

2013-11-01T23:59:59.000Z

163

Excitation frequency effects on atmospheric-pressure helium RF microplasmas: plasma density, electron energy and plasma impedance  

Science Journals Connector (OSTI)

...The effects of the driving RF frequency on the properties of low temperature atmospheric pressure helium microplasmas are discussed in light...?...m microdischarge driven at constant input power with a 10 MHz–...

K. McKay; F. Iza; M. G. Kong

2010-12-01T23:59:59.000Z

164

Atmospheric-Pressure Cold Plasma for Preparation of High Performance Pt/TiO2 Photocatalyst and Its Mechanism  

Science Journals Connector (OSTI)

Atmospheric-pressure dielectric barrier discharge (DBD) cold plasma was employed to fabricate Pt/TiO2 photocatalyst using the mixture of Ar and H2 as working gas. X-ray photoelectron microscopy (XPS) and transmis...

Lanbo Di; Xiuling Zhang; Zhijian Xu; Kai Wang

2014-03-01T23:59:59.000Z

165

Near-surface modification of optical properties of fused silica by low-temperature hydrogenous atmospheric pressure plasma  

Science Journals Connector (OSTI)

In this Letter, we report on the near-surface modification of fused silica by applying a hydrogenous atmospheric pressure plasma jet at ambient temperature. A significant decrease in...

Gerhard, Christoph; Tasche, Daniel; Brückner, Stephan; Wieneke, Stephan; Viöl, Wolfgang

2012-01-01T23:59:59.000Z

166

Generation of Teflon-like layers on cellophane surfaces under atmospheric pressure non-equilibrium SF6-plasma environments  

Science Journals Connector (OSTI)

In this contribution a novel atmospheric pressure SF6–cold–plasma method is suggested for the conversion of... x , (x< 6 ) species generated in the discharge for oxygen extractio...

L. E. Cruz-Barba; S. Manolache; F. Denes

2003-07-01T23:59:59.000Z

167

Application of a Microwave-Induced Helium Plasma Detector at Atmospheric Pressure for Gas Chromatographic Capillary Columns  

Science Journals Connector (OSTI)

......microwave-induced plasma emission detector...microwave- induced plasma that operates at atmospheric pressure using helium...to within 1 cm of the plasma discharge. The quartz...Raytheon PGM-10X2 2450 MHz microwave power supply......

Stanley P. Wasik; Frederick P. Schwarz

1980-12-01T23:59:59.000Z

168

Influence of energy contributions to a high-voltage atmospheric-pressure discharge on the efficiency of conversion of ethanol  

Science Journals Connector (OSTI)

The results of experimental investigations of the conversion of ethanol in a high-voltage atmospheric-pressure discharge have been presented. The influence of the energy parameters of the discharge on the yield a...

S. A. Zhdanok; A. V. Krauklis; P. P. Samtsov…

2006-11-01T23:59:59.000Z

169

Pipeline ADC Design Methodology  

E-Print Network [OSTI]

Scaling vs. R. Figure 4.8 Pipeline ADC Structures. Figure2.4 A Pipelined ADC. Figure 3.1 Pipeline ADC Transfer Curve.Modes (b) data latency in pipeline ADC Figure 3.3 Detailed

Zhao, Hui

2012-01-01T23:59:59.000Z

170

Silicon film formation by chemical transport in atmospheric-pressure pure hydrogen plasma  

Science Journals Connector (OSTI)

To prepare polycrystalline silicon (poly-Si) films at low temperatures ( atmospheric-pressure pure hydrogen plasma called the atmospheric-pressure enhanced chemical transport method. In this method high-pressure ( 200 – 760 Torr ) stable glow plasma of pure hydrogen was generated by a 150 MHz very high frequency power between the two parallel electrodes less than 2 mm apart. One of the electrodes is composed of the cooled Si solidsource and the other the heated substrate ( 200 – 400 ° C ) . According to the temperature dependence of hydrogen etching rate of Si Si H x species are mainly generated at the cooled Si solidsource by hydrogen atoms. These species are again decomposed in the plasma transported to the substrate to form Si films. In the present experiments on poly-Si film formation a high deposition rate of 300 nm ? min was achieved at 400 ° C and nearly ideal utilization efficiencies ( > 93 % ) of Si solidsource was realized in every condition. Si grains formed on a (001) Si substrate revealed anisotropic morphology elongated along ?110? directions and most of them had columnar structures epitaxially grown to the thickness of 2 ? m even at 200 ° C .

Hiromasa Ohmi; Hiroaki Kakiuchi; Yoshinori Hamaoka; Kiyoshi Yasutake

2007-01-01T23:59:59.000Z

171

Numerical study on microwave-sustained argon discharge under atmospheric pressure  

SciTech Connect (OSTI)

A numerical study on microwave sustained argon discharge under atmospheric pressure is reported in this paper. The purpose of this study is to investigate both the process and effects of the conditions of microwave-excited gas discharge under atmospheric pressure, thereby aiding improvements in the design of the discharge system, setting the appropriate working time, and controlling the operating conditions. A 3D model is presented, which includes the physical processes of electromagnetic wave propagation, electron transport, heavy species transport, gas flow, and heat transfer. The results can be obtained by means of the fluid approximation. The maxima of the electron density and gas temperature are 4.96?×?10{sup 18} m{sup ?3} and 2514.8?K, respectively, and the gas pressure remains almost unchanged for typical operating conditions with a gas flow rate of 20 l/min, microwave power of 1000 W, and initial temperature of 473?K. In addition, the conditions (microwave power, gas flow rate, and initial temperature) of discharge are varied to obtain deeper information about the electron density and gas temperature. The results of our numerical study are valid and clearly describe both the physical process and effects of the conditions of microwave-excited argon discharge.

Yang, Y.; Hua, W., E-mail: huaw@scu.edu.cn; Guo, S. Y. [School of Electronics and Information Engineering, Sichuan University, Chengdu 610065 (China)] [School of Electronics and Information Engineering, Sichuan University, Chengdu 610065 (China)

2014-04-15T23:59:59.000Z

172

In-service repair of main pipelines by welding  

Science Journals Connector (OSTI)

A new approach to the repair of main pipelines by welding without removing them from service ... failure risk; safety of welding works on pipeline under pressure; use of different variants of repair by welding; s...

V. I. Makhnenko; V. S. But; O. I. Oleinik

2009-09-01T23:59:59.000Z

173

Hydrogen Permeability and Integrity of Hydrogen Delivery Pipelines  

Broader source: Energy.gov [DOE]

Project Objectives: To gain basic understanding of hydrogen permeation behavior and its impact on hydrogen embrittlement of pipeline steels under high gaseous pressures relevant to hydrogen gas transmission pipeline

174

Development of Antimicrobial Coatings by Atmospheric Pressure Plasma Using a Guanidine-Based Precursor  

Science Journals Connector (OSTI)

Atmospheric pressure plasmas have been utilized in the engineering of antimicrobial materials, where their applications ranged from surface pretreatment of substrates for enhanced bonding of silver nanoparticles or antimicrobial agents in imparting antimicrobial behavior on surfaces spanning from pretreatments of substrate materials(13, 14) and very recently, deposition and/or plasma polymerization of antimicrobial polymers using monomer precursors. ... (20) Similar results of oxidized polar groups such as hydroxyls, carbonyls, and carboxyl groups on the surfaces of UHMWPE films from water vapor plasma treatments have been reported by Rodriguez-Santiago et al.(21) Also, reactive species such as ozone, O2, and O generated from plasma interactions with air from open atmosphere are also an underlying source of oxygen-bearing groups. ...

Jacqueline H. Yim; Michelle S. Fleischman; Victor Rodriguez-Santiago; Lars T. Piehler; André A. Williams; Julia L. Leadore; Daphne D. Pappas

2013-10-29T23:59:59.000Z

175

cautious pipeline trench blasting  

Science Journals Connector (OSTI)

cautious pipeline trench blasting, pipeline trench blasting (with)in built-up areas...n in bebauten Gebieten

2014-08-01T23:59:59.000Z

176

Differential sensitivity of lymphocyte subpopulations to non-thermal atmospheric-pressure plasma  

Science Journals Connector (OSTI)

Non-thermal atmospheric-pressure plasmas can possibly be used for several applications in particular in medicine. Plasma treatment can be applied to living tissues and cells, e.g., to induce apoptosis and growth arrest in tumour cells or to improve wound healing. However, detailed investigations of plasma–cell interactions are strongly needed. It is not yet clear whether plasmas will be useful in stimulating immune cells to change their behaviour or function. Therefore, this study focused on the influence of non-thermal atmospheric pressure plasma on cell surface molecules of rat spleen mononuclear cells (MNC) as first important step to gain insight into plasma–immune cells interactions. Rat spleen MNC were treated with plasma by surface dielectric barrier discharge (DBD) at atmospheric pressure in air or argon. Lymphocyte subpopulations and expression of L-selectin, ICAM-1 and LFA-1? expression on T-cells were analysed by flow cytometry 1–48 h after plasma treatment. Plasma changed the ratio of T- and B-cells in favour of B-cells. Of the T-cells the helper T-cells were reduced while cytotoxic T-cells were less affected. L-selectin expressing T-cells were significantly reduced already 1 h after plasma treatment and that of ICAM-1+ and LFA-1?+T-cells only after 4 h. These effects were time dependent and less dramatic when using DBD/argon plasma. In conclusion, different lymphocyte subpopulations show different sensitivity to plasma. Adhesion molecules as L-selectin, ICAM-1 and LFA-1? are down regulated by plasma. Whether these results can be used to modify lymphocyte homing or to activate MNC for different applications remains to be clarified.

Beate Haertel; Frauke Volkmann; Thomas von Woedtke; Ulrike Lindequist

2012-01-01T23:59:59.000Z

177

Deposition of vertically oriented carbon nanofibers in atmospheric pressure radio frequency discharge  

SciTech Connect (OSTI)

Deposition of vertically oriented carbon nanofibers (CNFs) has been studied in an atmospheric pressure radio frequency discharge without dielectric barrier covering the metallic electrodes. When the frequency is sufficiently high so that ions reside in the gap for more than one rf cycle ('trapped ions'), the operating voltage decreases remarkably and the transition from a uniform glow discharge to an arc discharge is suppressed even without dielectric barriers. More importantly, the trapped ions are able to build up a cathodic ion sheath. A large potential drop is created in the sheath between the bulk plasma and the electrode, which is essential for aligning growing CNFs. At the same time, the damage to CNFs due to ion bombardment can be minimized at atmospheric pressure. The primary interest of the present work is in identifying the cathodic ion sheath and investigating how it influences the alignment of growing CNFs in atmospheric pressure plasma-enhanced chemical-vapor deposition. Spectral emission profiles of He (706 nm), H{alpha} (656 nm), and CH (432 nm) clearly showed that a dark space is formed between the cathode layer and the heated bottom electrode. However, increasing the rf power induced the transition to a nonuniform {gamma}-mode discharge which creates intense plasma spots in the dark space. Aligned CNFs can be grown at moderate input power during the initial stage of the deposition process. Catalyst particles were heavily contaminated by precipitated carbon in less than 5 min. Alignment deteriorates as CNFs grow and deposition was virtually terminated by the deactivation of catalyst particles.

Nozaki, Tomohiro; Goto, Tomoya; Okazaki, Ken; Ohnishi, Kuma; Mangolini, Lorenzo; Heberlein, Joachim; Kortshagen, Uwe [Department of Mechanical and Control Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro Tokyo 1528552 (Japan); Department of Mechanical Engineering, University of Minnesota, Minneapolis, Minnesota 55455 (United States)

2006-01-15T23:59:59.000Z

178

Cellular and molecular responses of Neurospora crassa to non-thermal plasma at atmospheric pressure  

Science Journals Connector (OSTI)

Filamentous fungi have been rarely explored in terms of plasma treatments. This letter presents the cellular and molecular responses of the filamentous fungus Neurospora crassa to an argon plasma jet at atmospheric pressure. The viability and cell morphology of N. crassaspores exposed to plasma were both significantly reduced depending on the exposure time when treated in water. The intracellular genomicDNA content was dramatically reduced in fungal tissues after a plasma treatment and the transcription factor tah-3 was found to be required for fungal tolerance to a harsh plasma environment.

Gyungsoon Park; Young H. Ryu; Young J. Hong; Eun H. Choi; Han S. Uhm

2012-01-01T23:59:59.000Z

179

Chemical filters by non-thermal atmospheric pressure plasmas for reactive fields  

Science Journals Connector (OSTI)

Non-thermal plasmas in electrode configurations are designed in this study and investigated at atmospheric pressure for generation of reactive fields. A combination of insulated wire electrodes and bare metal wire electrodes makes it possible to obtain a filter-like assembly of microplasmas, even in ambient air or in aqueous solutions. Oxidation and reduction fields are obtained by controlling the gas supply of hydrogen, oxygen, and water vapor, and these fields benefit various functional processes such as recycling CO2, decomposing organic molecules, and increasing the work function on metal surfaces.

Osamu Sakai; Tadasuke Morita; Yoshihiko Ueda; Noriaki Sano; Kunihide Tachibana

2011-01-01T23:59:59.000Z

180

Generation of pulse-modulated induction thermal plasma at atmospheric pressure  

Science Journals Connector (OSTI)

The radio frequency induction thermal plasma of sufficiently high electric power for materials processing has been successfully generated with a pulsemodulated operating condition. A solid-stateamplifier which supplies the electric power with a nominal frequency of 1 MHz was employed for the pulsing plasma generation. The Ar–H 2 plasma was generated at a high power level of 17 kW at atmospheric pressure. Typically the plasma remained stable until the pulse duty factor went down to 30% when the period of the high power level was 5 ms and the low power level was about 6 kW.

Takamasa Ishigaki; Xiaobao Fan; Tadahiro Sakuta; Toshiyuki Banjo; Yukihito Shibuya

1997-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Properties of dielectric-barrier-free atmospheric pressure microplasma driven by submicrosecond dc pulse voltage  

SciTech Connect (OSTI)

Atmospheric pressure microplasma driven by dc pulse is developed. This device has a simple structure comprised of a flowing helium (He) feed gas and dielectric-free metal electrodes without an external current limiting resistor. It is shown that a stable glow mode plasma can be sustained without arc runaway by limiting the voltage pulse width to shorter than 300 ns. The properties of the device are reported in terms of discharge current waveforms, rotational temperature of N{sub 2}{sup +}, and spatiotemporally resolved optical emission characteristics.

Ha, Chang-Seung; Choi, Joon-Young; Kim, Dong-Hyun; Park, Chung-Hoo; Lee, Hae June; Lee, Ho-Jun [Department of Electrical Engineering, Pusan National University, Busan 609-735 (Korea, Republic of)

2009-08-10T23:59:59.000Z

182

Spectroscopic study of a long high-electron-density argon plasma column generated at atmospheric pressure  

SciTech Connect (OSTI)

A stable plasma column is generated in a quartz tube using a pair of hollow electrodes driven by a sinusoidal power supply of 45 kHz at atmospheric pressure in argon. Two distinct operating modes (low-current and high-current modes) are identified through observing its discharge phenomena, measuring its electrical characteristics, and determining the gas temperatures by spectroscopic diagnosis of Q branch of UV OH spectrum. The electron density in the high-current mode is diagnosed by Stark broadening and is found to be two orders higher than that in low-current mode.

Li Shouzhe; Huang Wentong; Wang Dezhen [Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, and School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116023 (China)

2010-02-15T23:59:59.000Z

183

Absolute atomic oxygen density profiles in the discharge core of a microscale atmospheric pressure plasma jet  

Science Journals Connector (OSTI)

The micro atmospheric pressure plasma jet is an rf driven (13.56 MHz ? 20 ? W ) capacitively coupled discharge producing a homogeneous plasma at ambient pressure when fed with a gas flow of helium (1.4 slm) containing small admixtures of oxygen ( ? 0.5 % ) . The design provides excellent optical access to the plasma core. Ground state atomic oxygen densities up to 3 × 10 16 ? cm ? 3 are measured spatially resolved in the discharge core by absolutely calibrated two-photon absorption laser-induced fluorescence spectroscopy. The atomic oxygen density builds up over the first 8 mm of the discharge channel before saturating at a maximum level. The absolute value increases linearly with applied power.

Nikolas Knake; Kari Niemi; Stephan Reuter; Volker Schulz-von der Gathen; Jörg Winter

2008-01-01T23:59:59.000Z

184

Highly efficient oxidation of silicon at low temperatures using atmospheric pressure plasma  

Science Journals Connector (OSTI)

Silicon oxide ( Si O 2 ) layers were formed with initial oxidation rates in the range of 6.2 – 14.1 nm ? min in the temperature range of 150 – 400 ° C by oxidizing Si(001) wafers. Such a high-rate and low-temperature oxidation was realized by using a stable glow He ? O 2 plasma excited at atmospheric pressure by a 150 MHz very high-frequency power. Increasing the temperature led to both the higher oxidation rate and the better quality of Si O 2 and Si O 2 ? Si interface. The oxidation at 400 ° C showed an interface trap density of 6.2 × 10 10 eV ? 1 cm ? 2 which is considerably lower than that in a radical oxidation process using low-pressure He ? O 2 plasma at the same temperature.

Hiroaki Kakiuchi; Hiromasa Ohmi; Makoto Harada; Heiji Watanabe; Kiyoshi Yasutake

2007-01-01T23:59:59.000Z

185

Highly efficient oxidation of silicon at low temperatures using atmospheric pressure plasma  

SciTech Connect (OSTI)

Silicon oxide (SiO{sub 2}) layers were formed with initial oxidation rates in the range of 6.2-14.1 nm/min in the temperature range of 150-400 deg. C by oxidizing Si(001) wafers. Such a high-rate and low-temperature oxidation was realized by using a stable glow He/O{sub 2} plasma excited at atmospheric pressure by a 150 MHz very high-frequency power. Increasing the temperature led to both the higher oxidation rate and the better quality of SiO{sub 2} and SiO{sub 2}/Si interface. The oxidation at 400 deg. C showed an interface trap density of 6.2x10{sup 10} eV{sup -1} cm{sup -2}, which is considerably lower than that in a radical oxidation process using low-pressure He/O{sub 2} plasma at the same temperature.

Kakiuchi, Hiroaki; Ohmi, Hiromasa; Harada, Makoto; Watanabe, Heiji; Yasutake, Kiyoshi [Department of Precision Science and Technology, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871 (Japan)

2007-02-26T23:59:59.000Z

186

Formation and characterization of hydrophobic glass surface treated by atmospheric pressure He/CH4 plasma  

Science Journals Connector (OSTI)

Atmospheric pressure helium plasmas generated in the open air by 13.56?MHz rf power were applied for the glass surface wettability modification. The plasma gas temperature measured by the spectroscopic method was under 400?K which is low enough to treat the samples without thermal damages. The hydrophobicity of the samples determined by the water droplet contact angle method was dependent on the methane gas content and the plasma exposure time. Adding the methane gas by a small amount of 0.25% the contact angle was remarkably increased from 10° to 83° after the 10 s plasma treatment. From the analysis of the treated surface and the plasma it was shown that the deposition of alkane functional groups such as C-H stretch CH2 bend and CH3 bend was one of the contributing factors for the hydrophobicity development. In addition the hydrophobic properties lasted over 2 months even after the single treatment. From the results the atmospheric pressure plasma treatment promises the fast and low-cost method for the thermally-weak surface modification.

2014-01-01T23:59:59.000Z

187

Atmospheric-pressure plasma cleaning of contaminated surfaces. 1998 annual progress report  

SciTech Connect (OSTI)

'The object of this research program is to develop an atmospheric-pressure plasma jet for converting transuranic wastes (TRUs) into low-level radioactive wastes (LLWs). This plasma process will be used to efficiently decontaminate a wide range of structures and equipment. This report summarizes work after 1 year and 9 months of a 3-year project. A picture of the atmospheric-pressure plasma jet is shown in Fig. 1. This new plasma source consists of two concentric electrodes through which a mixture of helium and reactive gases flow. The plasma is ignited by applying 13.56 MHz RF power to the inner electrode. The characteristics of this discharge are different from other atmospheric-pressure plasmas, such as transferred arcs, torches, coronas and silent discharges. Shown in Fig. 2 is the current-voltage curve for the plasma jet. Spark breakdown occurs at 0.01 A, and is proceeded by a normal glow region, in which the voltage remains constant with increasing current, and an abnormal glow region, in which the voltage increases rapidly with current. At about 1.0 A and 225 V, the plasma begins to arc. The normal glow region is rarely observed in atmospheric pressure plasmas. They usually proceed directly from spark breakdown to arcing. The trend shown in the figure indicates that the plasma jet is stable over a wide range of operating conditions. The distribution of reactive species in a plasma jet, containing oxygen and helium, has been characterized by Langmuir probe measurements, optical emission spectroscopy, and ultraviolet absorption spectroscopy. The charged particle density ranges from about 5 x 10{sup 11} cm{sup -3} inside the plasma to 1 x 10{sup 10} cm{sup -3} in the jet exit. The concentration of metastable oxygen molecules (a 1 Dg and b 1 Sg{sup +} ) is estimated to be between 10{sup 12} to 10{sup 13} cm{sup -3} . By contrast, the ozone concentration increases from about 5 x 10{sup 14} cm{sup -3} inside the plasma to 1 x 10{sup 16} cm{sup -3} in the effluent. The ozone molecules are produced by the reaction of O atoms with O{sub 2} molecules: O + O{sub 2} + M a O{sub 3} + M. To generate the amount of ozone observed, the O atom concentration in the plasma must be near 1 x 10{sup 16} cm{sup -3}, or about 10% of the oxygen fed. These results are quite unexpected, because most non-equilibrium, low-temperature plasmas achieve a much lower degree of dissociation. The etching of actinide metals has been simulated by using tantalum as a surrogate material. Tantalum etching rates of up to 1.2 mm/min are achieved with the plasma jet using a CF{sub 4}/O{sub 2}/He gas feed. This is 10 times faster than conventional plasma systems, and indicates that the atmospheric-pressure plasma is a promising technology for decontamination of DOE sites. Finally, the plasma jet has been successfully modified to process larger areas, up to about 1.0 ft{sup 2} . Work is underway to increase the process scale further. The authors are confident that this technology is capable of being adapted for decontamination operations in the field.'

Hicks, R.F. [Univ. of California, Los Angeles, CA (US); Selwyn, G. [Los Alamos National Lab., NM (US)

1998-06-01T23:59:59.000Z

188

The Interactions between Non-thermal Atmospheric Pressure Plasma and Ex-vivo Dermal Fibroblasts  

Science Journals Connector (OSTI)

Abstract The cold atmospheric plasma (CAPs) is the fourth state of matter, which means that it is an ionized gas, obtained at room temperature and atmospheric pressure when energy is supplied to a gas. Its composition is complex, involving chemical (gas's molecules, free radicals, ions and electrons) and physical (Ultra-violet radiation and electric field) components. It has been successfully used in the industry for the processing of materials and the recent discovery of its efficacy in sterilization of microorganisms has trigged a large quantity of research in the biomedical field. The expectations of good that the \\{CAPs\\} may bring to medical treatments are high and therefore this study analyzes the effects caused by cold atmospheric pressure plasma in ex-vivo dermal fibroblasts. For that, fibroblast cell culture was obtained from ex-vivo human skin and treated with different conditions of CAPs, such as treatment type (direct or indirect). This work aimed to determine if ex-vivo human fibroblasts remain viable after these treatments. For that, we counted the number of cells right after the experiments and compared it with the control, which did not receive any kind of plasma. For further results we also counted the number of viable cells 3 and 5 days after the application. The fibroblasts were treated with 85W plasma, from 30 seconds up to 60 seconds. Our findings show that \\{CAPs\\} obtained from Argon gas can be applied to in-house human fibroblasts culture directly and indirectly without altering the cells’ viability. It does not cause apoptosis in all of the cells treated nor does it exacerbate its proliferation. Further studies need to be done in order to analyze if it alters the cells’ functionality.

Bruno Bellotti Lopes; Maria Beatriz de Paula Leite Kraft; Jussara Rehder; Fabiana Regina Xavier Batista; Maria Beatriz Puzzi

2013-01-01T23:59:59.000Z

189

A High-Performance Liquid Chromatographic-Atmospheric Pressure Chemical Ionization-Tandem Mass Spectrometric Method for Determination of Risperidone and 9-Hydroxyrisperidone in Human Plasma  

Science Journals Connector (OSTI)

......Chromatographic-Atmospheric Pressure Chemical...9-Hydroxyrisperidone in Human Plasma David E. Moody...spec- trometry and atmospheric pressure chemical...or polar drugs in plasma. Ther. Drug Monit...their metabolites in plasma by liquid chromatography...spectrometry with atmospheric pres- sure chemical......

David E. Moody; John D. Laycock; Wei Huang; Rodger L. Foltz

2004-09-01T23:59:59.000Z

190

Update on pipeline repair methods  

SciTech Connect (OSTI)

A comprehensive review of pipeline repair methods has been recently completed under the sponsorship of the American Gas Association`s, Pipeline Research Committee. This paper is intended to summarize the important results of that review. First and foremost, two relatively new methods of repair are reviewed. One involves the use of a continuous-fiber fiberglass composite material which can be applied as an alternative to a steel sleeve for the reinforcement of nonleaking defects. The second is the use of deposited weld metal to replace metal lost to external corrosion. This latter technique is not new in principle, but recent research has shown how it can be done safely on a pressurized pipeline. The other significant outcome of the comprehensive review was a set of guidelines for using all types of repairs including full-encirclement sleeves and repair clamps. Pipeline operators can use these guidelines to enhance their current repair procedures, or to train new personnel in maintenance techniques.

Kiefner, J.F. [Kiefner and Associates, Inc., Worthington, OH (United States); Bruce, W.A. [Edison Welding Inst., Columbus, OH (United States); Stephens, D.R. [Battelle, Columbus, OH (United States)

1995-12-31T23:59:59.000Z

191

Electrical studies and plasma characterization of an atmospheric pressure plasma jet operated at low frequency  

Science Journals Connector (OSTI)

Low-temperature high-pressure plasma jets have an extensive use in medical and biological applications. Much work has been devoted to study these applications while comparatively fewer studies appear to be directed to the discharge itself. In this work in order to better understand the kind of electrical discharge and the plasma states existing in those devices a study of the electrical characteristics of a typical plasma jet operated at atmospheric pressure using either air or argon is reported. It is found that the experimentally determined electrical characteristics are consistent with the model of a thermal arc discharge with a highly collisional cathode sheet. The only exception is the case of argon at the smallest electrode separation studied around 1?mm in which case the discharge is better modeled as either a non-thermal arc or a high-pressure glow. Also variations of the electrical behavior at different gas flow rates are interpreted consistently with the arc model in terms of the development of fluid turbulence in the external jet.

2013-01-01T23:59:59.000Z

192

Leakage Risk Assessment of CO2 Transportation by Pipeline at the Illinois Basin Decatur Project, Decatur, Illinois  

E-Print Network [OSTI]

S.M. , 2007, Natural Gas Pipeline Technology Overview.high-pressure natural- gas pipelines: J. Loss Prevention inrisk assessments of CO 2 pipelines, in Elsevier, ed. , 9th

Mazzoldi, A.

2014-01-01T23:59:59.000Z

193

Atmospheric pressure plasma cleaning of contamination surfaces. 1997 mid-year progress report  

SciTech Connect (OSTI)

'Goals of the project are to (1) identify the key physics and chemistry underlying the use of high pressure plasmas for etching removal of actinides and actinide surrogates; and (2) identify key surface reactions and plasma physics necessary for optimization of the atmospheric pressure plasma jet. Technical description of the work decommissioning of transuranic waste (TRU) into low-level radioactive waste (LLW) represents the largest cleanup cost associated with the nuclear weapons complex. This work is directed towards developing a low-cost plasma technology capable of converting TRU into LLW, based upon highly selective plasma etching of plutonium and other actinides from contaminated surfaces. In this way, only the actinide material is removed, leaving the surface less contaminated. The plasma etches actinide material by producing a volatile halide compound, which may be efficiently trapped using filters. To achieve practical, low-cost operation of a plasma capable of etching actinide materials, the authors have developed a y-mode, resonant-cavity, atmospheric pressure plasma jet (APPJ). In contrast to conventional, low pressure plasmas, the APPJ produces a purely-chemical effluent free of ions, and so achieves very high selectivity and produces negligible damage to the surface. Since the jet operates outside a chamber, many nuclear wastes may be treated including machinery, duct-work, concrete and other building materials. In some cases, it may be necessary to first remove paint from contaminated surfaces using a plasma selective for that surface, then to switch to the actinide etching chemistry for removal of actinide contamination. The goal of this work is to develop the underlying science required for maturation of this technology and to establish early version engineering prototypes. Accomplishments to Date The authors have made significant progress in this program. The work conducted jointly at Los Alamos and at UCLA. This has been facilitated by exchange of people, equipment and designs between the two locations. The study can be divided into three (3) components: (1) source design, operation and physics, (2) effluent characterization and analysis, (3) surface reactions and decontamination. Some of the key accomplishments in each area are noted.'

Selwyn, G.S. [Los Alamos National Lab., NM (US); Hicks, R. [Univ. of California, Los Angeles, CA (US)

1997-06-01T23:59:59.000Z

194

Natural gas pipeline technology overview.  

SciTech Connect (OSTI)

The United States relies on natural gas for one-quarter of its energy needs. In 2001 alone, the nation consumed 21.5 trillion cubic feet of natural gas. A large portion of natural gas pipeline capacity within the United States is directed from major production areas in Texas and Louisiana, Wyoming, and other states to markets in the western, eastern, and midwestern regions of the country. In the past 10 years, increasing levels of gas from Canada have also been brought into these markets (EIA 2007). The United States has several major natural gas production basins and an extensive natural gas pipeline network, with almost 95% of U.S. natural gas imports coming from Canada. At present, the gas pipeline infrastructure is more developed between Canada and the United States than between Mexico and the United States. Gas flows from Canada to the United States through several major pipelines feeding U.S. markets in the Midwest, Northeast, Pacific Northwest, and California. Some key examples are the Alliance Pipeline, the Northern Border Pipeline, the Maritimes & Northeast Pipeline, the TransCanada Pipeline System, and Westcoast Energy pipelines. Major connections join Texas and northeastern Mexico, with additional connections to Arizona and between California and Baja California, Mexico (INGAA 2007). Of the natural gas consumed in the United States, 85% is produced domestically. Figure 1.1-1 shows the complex North American natural gas network. The pipeline transmission system--the 'interstate highway' for natural gas--consists of 180,000 miles of high-strength steel pipe varying in diameter, normally between 30 and 36 inches in diameter. The primary function of the transmission pipeline company is to move huge amounts of natural gas thousands of miles from producing regions to local natural gas utility delivery points. These delivery points, called 'city gate stations', are usually owned by distribution companies, although some are owned by transmission companies. Compressor stations at required distances boost the pressure that is lost through friction as the gas moves through the steel pipes (EPA 2000). The natural gas system is generally described in terms of production, processing and purification, transmission and storage, and distribution (NaturalGas.org 2004b). Figure 1.1-2 shows a schematic of the system through transmission. This report focuses on the transmission pipeline, compressor stations, and city gates.

Folga, S. M.; Decision and Information Sciences

2007-11-01T23:59:59.000Z

195

Modeling and Data Needs of Atmospheric Pressure Gas Plasma and Biomaterial Interaction  

SciTech Connect (OSTI)

Non-thermal atmospheric pressure plasmas have received considerable attention recently. One promising application of non-thermal plasma devices appears to be biomaterial and biomedical treatment. Various biological and medical effects of non-thermal plasmas have been observed by a variety of investigators, including bacteria sterilization, cell apoptosis, and blood coagulation, among others. The mechanisms of the plasma-biomaterial interaction are however only poorly understood. A central scientific challenge is therefore how to answer the question: 'What plasma-generated agents are responsible for the observed biological effects?' Our modeling efforts are motivated by this question. In this paper, we review our modeling results of the plasma needle discharge. Then, we address data needs for further modeling and understanding of plasma-biomaterial interaction.

Sakiyama, Yukinori; Graves, David B. [Department of Chemical Engineering, University of California at Berkeley, Berkeley, CA 94720 (United States)

2009-05-02T23:59:59.000Z

196

Modeling and Data Needs of Atmospheric Pressure Gas Plasma and Biomaterial Interaction  

Science Journals Connector (OSTI)

Non?thermal atmospheric pressure plasmas have received considerable attention recently. One promising application of non?thermal plasma devices appears to be biomaterial and biomedical treatment. Various biological and medical effects of non?thermal plasmas have been observed by a variety of investigators including bacteria sterilization cell apoptosis and blood coagulation among others. The mechanisms of the plasma?biomaterial interaction are however only poorly understood. A central scientific challenge is therefore how to answer the question: “What plasma?generated agents are responsible for the observed biological effects?” Our modeling efforts are motivated by this question. In this paper we review our modeling results of the plasma needle discharge. Then we address data needs for further modeling and understanding of plasma?biomaterial interaction

Yukinori Sakiyama; David B. Graves

2009-01-01T23:59:59.000Z

197

Synthesis of Ozone at Atmospheric Pressure by a Quenched Induction-Coupled Plasma Torch  

SciTech Connect (OSTI)

The technical feasibility of using an induction-coupled plasma (ICP) torch to synthesize ozone at atmospheric pressure is explored. Ozone concentrations up to ~250 ppm were produced using a thermal plasma reactor system based on an ICP torch operating at 2.5 MHz and ~11 kVA with an argon/oxygen mixture as the plasma-forming gas. A gaseous oxygen quench formed ozone by rapid mixing of molecular oxygen with atomic oxygen produced by the torch. The ozone concentration in the reaction chamber was measured by Fourier Transform infrared (FTIR) spectroscopy over a wide range of experimental configurations. The geometry of the quench gas flow, the quench flow velocity, and the quench flow rate played important roles in determining the ozone concentration. The ozone concentration was sensitive to the torch RF power, but was insensitive to the torch gas flow rates. These observations are interpreted within the framework of a simple model of ozone synthesis.

A. Blutke; B.C. Stratton; D.R. Mikkelsen; J. Vavruska; R. Knight

1998-01-01T23:59:59.000Z

198

Influence of oxygen traces on an atmospheric-pressure radio-frequency capacitive argon plasma discharge  

Science Journals Connector (OSTI)

An atmospheric-pressure capacitive discharge source driven by radio-frequency power supply at 13.56 MHz has been developed experimentally that is capable of producing a homogeneous and cold glow discharge in O2/Ar. With respect to the influence of oxygen component when diluted into argon plasmadischarge on the dischargecharacteristics the measurements of the electrical parameters (impedance phase angle resistance and reactance) are made systematically and the densities of the metastable and resonant state of argon are determined by means of optical emission spectroscopy(OES). It is shown that the admixture of oxygen into argon plasma not only changes the electric characteristics but also alters the optical emission spectra greatly due to strong interaction between the oxygen content and the argon in the plasma environment.

Shou-Zhe Li; Qi Wu; Wen Yan; Dezhen Wang; Han S. Uhm

2011-01-01T23:59:59.000Z

199

Enhancing polymer adhesion through surface activation using an in-line atmospheric pressure plasma  

Science Journals Connector (OSTI)

A reel-to-reel atmospheric pressure plasma treatment system known as Lablineâ?¢, was used to activate the surface of Polypropylene (PP) and Polyethylene Terephthalate (PET). An epoxy adhesive was used to bond the activated polymers and the bond strength was assessed using the tensile lap shear test method. For PP treated in a helium discharge at 900 W a fivefold increase in adhesive bond strength was observed compared with that of the untreated polymer. The effect of adding nitrogen and oxygen into the helium plasma was examined, both with respect to the bond strength of the epoxy and polymer surface energy. An 18-fold increase in adhesive strength was observed after the treatment of PP in a helium/oxygen plasma, while a threefold increase was observed for PET. A similar increase in adhesion was observed for PET treated in a helium/nitrogen plasma, while a 16-fold increase in adhesion was obtained for PP.

John Tynan; Denis P. Dowling; Gerald Byrne; Donal Hughes

2007-01-01T23:59:59.000Z

200

A large gap of radio frequency dielectric barrier atmospheric pressure glow discharge  

SciTech Connect (OSTI)

A large gap was acquired between electrodes (up to 5.5 mm) of Ar atmospheric pressure glow discharge in radio frequency dielectric barrier discharge (rf-DBD). The discharge of Ar plasma was characterized by I-V curve and Lissajous plot, and the effective power of the discharge was calculated based on the measured Lissajous plot and found to be higher than 90% of the input power. To gain a thorough understanding of the mechanism, the rf-DBD with a single dielectric barrier layer operating in gamma mode glow discharge of N{sub 2} plasma was diagnosed in spatial resolution through optical emission spectroscopy. It was concluded that secondary electron emission might be responsible for the sustainable glow discharge in the large gap rf-DBD plasma.

Li, B.; Chen, Q.; Liu, Z. W. [Laboratory of Plasma Physics and Materials, Beijing Institute of Graphic Communication, Beijing 102600 (China)

2010-01-25T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Production of atmospheric-pressure glow discharge in nitrogen using needle-array electrode  

SciTech Connect (OSTI)

An atmospheric pressure glow discharge was generated using a needle-array electrode in nitrogen, and the voltage-current characteristics of the glow discharge were obtained in a range from 1 mA to 60 A. A pulsed high voltage with short rise time under 10 ns was employed to generate streamer discharges simultaneously at all needle tips. The large number of streamer discharges prevented the glow-to-arc transition caused by inhomogeneous thermalization. Semiconductor opening switch diodes were employed as an opening switch to shorten the rise time. The glow voltage was almost constant until the discharge current became 0.3 A, whereas the voltage increased with the current higher than 0.3 A. Electron density and temperature in a positive column of the glow discharge at 60 A were obtained to 1.4x10{sup 12} cm{sup -3} and 1.3 eV from calculation based on nitrogen swarm data.

Takaki, K.; Hosokawa, M.; Sasaki, T.; Mukaigawa, S.; Fujiwara, T. [Department of Electrical and Electronic Engineering, Iwate University, 4-3-5 Ueda, Morioka, Iwate 020-8551 (Japan)

2005-04-11T23:59:59.000Z

202

Driving frequency effects on the characteristics of atmospheric pressure capacitive helium discharge  

SciTech Connect (OSTI)

Atmospheric pressure helium discharge characteristics were investigated for varying driving radio frequencies in the range between 1.86 and 27.1 MHz. As the driving frequency is raised, both gas breakdown and {alpha}-{gamma} transition voltages decrease due to the reduction in the electron drift loss. In addition, different discharge features such as normal, abnormal, {alpha}, and {gamma} modes show certain dependences on the frequency. Using a simple circuit model, the changes in sheath thickness from 2.35 to 0.11 mm, electron density from 0.26 to 15.6x10{sup 11} cm{sup -3} was obtained by raising the frequency from 1.86 to 27.1 MHz.

Moon, Se Youn; Kim, D. B.; Gweon, B.; Choe, W. [Department of Physics, Korea Advanced Institute of Science and Technology, 335 Gwahangno, Yuseong-gu, Daejeon 305-701 (Korea, Republic of)

2008-12-01T23:59:59.000Z

203

Two-phase flow visualization in a transparent, atmospheric pressure, boiling water loop  

SciTech Connect (OSTI)

The Simulant Boiling Flow Visualization (SBFV) loop, a transparent, atmospheric pressure test apparatus employing boiling water as a simulant for boiling liquid sodium, has been designed and operated at Oak Ridge National Laboratory. The objective of testing in this loop has been to study two-phase flow behavior that is phenomenologically similar to that observed in sodium boiling experiments, as part of the US Department of Energy Breeder Reactor Safety Program. A detailed description of the design of the SBFV loop is presented, as well as experimental results that show the similarity between low-power boiling behavior in water and liquid sodium. Future tests are planned in a seven-pin flow visualization bundle that will be installed in the SBFV loop. The design of this bundle is also discussed.

Levin, A.E.; Carbajo, J.J.; Montgomery, B.H.; Wantland, J.L.

1985-01-01T23:59:59.000Z

204

XAFS Measurements under Atmospheric Pressure in the Soft X-ray Region  

SciTech Connect (OSTI)

We have developed a compact experimental set-up for X-ray absorption fine structure (XAFS) measurements in He at atmospheric pressure (AP) in the soft X-ray region and used it for Mg and Cl K-edge XAFS measurements of MgCl{sub 2} and MgCl{sub 2{center_dot}}6H{sub 2}O. The spectra of MgCl{sub 2{center_dot}}6H{sub 2}O measured in He at AP were significantly different from those measured in vacuum. This suggests the importance of performing soft X-ray XAFS experiments under AP to obtain reliable spectra from hydrated compounds.

Nakanishi, Koji; Ohta, Toshiaki [SR center, Ritsumeikan University, Noji-Higashi, Kusatsu, Shiga, 525-8577 (Japan); Yagi, Shinya [School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-8603 (Japan)

2010-06-23T23:59:59.000Z

205

Electron density and temperature measurement by continuum radiation emitted from weakly ionized atmospheric pressure plasmas  

SciTech Connect (OSTI)

The electron-atom neutral bremsstrahlung continuum radiation emitted from weakly ionized plasmas is investigated for electron density and temperature diagnostics. The continuum spectrum in 450–1000?nm emitted from the argon atmospheric pressure plasma is found to be in excellent agreement with the neutral bremsstrahlung formula with the electron-atom momentum transfer cross-section given by Popovi?. In 280–450?nm, however, a large discrepancy between the measured and the neutral bremsstrahlung emissivities is observed. We find that without accounting for the radiative H{sub 2} dissociation continuum, the temperature, and density measurements would be largely wrong, so that it should be taken into account for accurate measurement.

Park, Sanghoo; Choe, Wonho, E-mail: wchoe@kaist.ac.kr [Department of Physics, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701 (Korea, Republic of); Youn Moon, Se [High-enthalpy Plasma Research Center, Chonbuk National University, 567 Baekje-daero, Deokjin-gu, Jeonju 561-756 (Korea, Republic of); Park, Jaeyoung [5771 La Jolla Corona Drive, La Jolla, CA 92037 (United States)

2014-02-24T23:59:59.000Z

206

Laser-rf creation and diagnostics of seeded atmospheric pressure air and nitrogen plasmas  

Science Journals Connector (OSTI)

A laser initiation and radio frequency (rf) sustainment technique has been developed and improved from our previous work to create and sustain large-volume high-pressure air and nitrogen plasmas. This technique utilizes a laser-initiated 15 mTorr partial pressure tetrakis (dimethylamino) ethylene seed plasma with a 75 Torr background gas pressure to achieve high-pressure air/nitrogen plasma breakdown and reduce the rf power requirement needed to sustain the plasma. Upon the laser plasma initiation the chamber pressure is raised to 760 Torr in 0.5 s through a pulsed gas valve and the end of the chamber is subsequently opened to the ambient air. The atmospheric-pressure plasma is then maintained with the 13.56 MHz rf power. Using this technique large-volume ( 1000 ? cm 3 ) high electron density (on the order of 10 11 – 12 ? cm ? 3 ) 760 Torr air and nitrogen plasmas have been created while rf power reflection is minimized during the entire plasma pulse utilizing a dynamic matching method. This plasma can project far away from the antenna region (30 cm) and the rf power budget is 5 ? W / cm 3 . Temporal evolution of the plasma electron density and total electron-neutral collision frequency during the pulsed plasma is diagnosed using millimeter waveinterferometry. Optical emission spectroscopy(OES) aided by SPECAIR a special OES simulation program for air-constituent plasmas is used to analyze the radiating species and thermodynamic characteristics of the plasma. Rotational and vibrational temperatures of 4400 – 4600 ± 100 ? K are obtained from the emission spectra from the N 2 ( 2 + ) and N 2 + ( 1 ? ) transitions by matching the experimental spectrum results with the SPECAIR simulation results. Based on the relation between the electron collision frequency and the neutral density utilizing millimeter waveinterferometry the electron temperature of the 760 Torr nitrogen plasma is found to be 8700 ± 100 ? K ( 0.75 ± 0.1 ? eV ) . Therefore the plasma deviates significantly from local thermal equilibrium.

Siqi Luo; C. Mark Denning; John E. Scharer

2008-01-01T23:59:59.000Z

207

Laser-rf creation and diagnostics of seeded atmospheric pressure air and nitrogen plasmas  

SciTech Connect (OSTI)

A laser initiation and radio frequency (rf) sustainment technique has been developed and improved from our previous work to create and sustain large-volume, high-pressure air and nitrogen plasmas. This technique utilizes a laser-initiated, 15 mTorr partial pressure tetrakis (dimethylamino) ethylene seed plasma with a 75 Torr background gas pressure to achieve high-pressure air/nitrogen plasma breakdown and reduce the rf power requirement needed to sustain the plasma. Upon the laser plasma initiation, the chamber pressure is raised to 760 Torr in 0.5 s through a pulsed gas valve, and the end of the chamber is subsequently opened to the ambient air. The atmospheric-pressure plasma is then maintained with the 13.56 MHz rf power. Using this technique, large-volume (1000 cm{sup 3}), high electron density (on the order of 10{sup 11-12} cm{sup -3}), 760 Torr air and nitrogen plasmas have been created while rf power reflection is minimized during the entire plasma pulse utilizing a dynamic matching method. This plasma can project far away from the antenna region (30 cm), and the rf power budget is 5 W/cm{sup 3}. Temporal evolution of the plasma electron density and total electron-neutral collision frequency during the pulsed plasma is diagnosed using millimeter wave interferometry. Optical emission spectroscopy (OES) aided by SPECAIR, a special OES simulation program for air-constituent plasmas, is used to analyze the radiating species and thermodynamic characteristics of the plasma. Rotational and vibrational temperatures of 4400-4600{+-}100 K are obtained from the emission spectra from the N{sub 2}(2+) and N{sub 2}{sup +}(1-) transitions by matching the experimental spectrum results with the SPECAIR simulation results. Based on the relation between the electron collision frequency and the neutral density, utilizing millimeter wave interferometry, the electron temperature of the 760 Torr nitrogen plasma is found to be 8700{+-}100 K (0.75{+-}0.1 eV). Therefore, the plasma deviates significantly from local thermal equilibrium.

Luo Siqi; Denning, C. Mark; Scharer, John E. [Electrical and Computer Engineering, University of Wisconsin--Madison, Madison, Wisconsin 53705 (United States)

2008-07-01T23:59:59.000Z

208

10 - Lateral Buckling and Pipeline Walking  

Science Journals Connector (OSTI)

Abstract Lateral buckling of pipelines due to high pressure and high temperature (HPHT) may occur if the pipeline is exposed on the seabed, and upheaval buckling may occur if it is buried or constrained in a trench. Uncontrolled global buckling can cause excessive plastic deformation of the pipeline, which could lead to localized buckling collapse or cyclic fatigue failure during operation, if it is not properly managed. In this chapter, the principles of lateral buckling and pipeline walking are detailed, the Hobbs’s method is used to predicate the critical effective axial force for buckling. The limit state design of pipeline for lateral buckling is given. Then, mitigation methods, such as snake–lay, sleeper, and distributed buoyancy for lateral buckling and pile for pipeline walking are discussed.

Qiang Bai; Yong Bai

2014-01-01T23:59:59.000Z

209

Application of atmospheric-pressure non-thermal plasma to chlorination of hardly soluble materials  

Science Journals Connector (OSTI)

Abstract The chlorination reaction in which hardly soluble materials are chemically converted into soluble chlorides by atmospheric-pressure non-thermal plasma (APNTP) and the effect of the plasma-irradiation conditions on the chlorination reaction were investigated. The CeO2 specimens, which have the same crystallographic structure (CaF2 type, cubic) and valence fluctuation behavior as ThO2, were used to simulate hardly soluble nuclear materials. \\{CCl4\\} and He mixed gas were used as the plasma discharge. The emission and electrical properties of APNTP and dissolution behaviors of chloride generated by plasma irradiation were evaluated. The results of the emission spectroscopic analysis and electrical property measurements showed that chlorine and carbon were generated from the decomposition of \\{CCl4\\} caused by the excited atmospheric components and He. Moreover, the production of CeCl3 from CeO2 and a logarithmic progression of the chlorination reaction were indicated with increasing plasma-irradiation time.

Toru Kitagaki; Tatsuya Suzuki; Toshitaka Kaneshiki; Masao Nomura

2014-01-01T23:59:59.000Z

210

Array of surface-confined glow discharges in atmospheric pressure helium: Modes and dynamics  

Science Journals Connector (OSTI)

Array of atmospheric pressure surface discharges confined by a two-dimensional hexagon electrode mesh is studied for its discharge modes and temporal evolution so as to a theoretical underpinning to their growing applications in medicine aerodynamic control and environmental remediation. Helium plasma surface-confined by one hexagon-shaped rim electrode is shown to evolve from a Townsend mode to a normal and abnormal glow mode and its evolution develops from the rim electrodes as six individual microdischarges merging in the middle of the hexagon mesh element. Within one hexagon element microdischarges remain largely static with the mesh electrode being the instantaneous cathode but move towards the hexagon center when the electrode is the instantaneous anode. On the entire array electrode surface plasma ignition is found to beat an unspecific hexagon element and then spreads to ignite surrounding hexagon elements. The spreading of microdischarges is in the form of an expanding circle at a speed of about 3?×?104 m/s and their quenching starts in the location of the initial plasma ignition. Plasma modes influence how input electrical power is used to generate and accelerate electrons and as such the reaction chemistry whereas plasma dynamics are central to understand and control plasma instabilities. The present study provides an important aspect of plasma physics of the atmospheric surface-confined discharge array and a theoretical underpinning to its future technological innovation.

M. G. Kong

2014-01-01T23:59:59.000Z

211

Estimation of point of zero charge for activated carbon treated with atmospheric pressure non-thermal oxygen plasmas  

Science Journals Connector (OSTI)

Commercial activated carbon was treated with a non-thermal oxygen plasma under atmospheric pressure using three types of reactors: a dielectric barrier discharge (DBD) parallel-plate reactor; an atmospheric pressure glow discharge plasma jet reactor and a DBD coaxial type reactor. The samples treated with the plasma were characterized by the pH value at the point of zero charge. An estimation of the adsorption properties of samples for copper ions in aqueous solution was also carried out in order to explain the effect of pH value on the adsorption results.

Satoshi Kodama; Hidetoshi Sekiguchi

2006-01-01T23:59:59.000Z

212

4271 pipeline [n  

Science Journals Connector (OSTI)

envir. (Long-distance pipe for conveying natural gas, oil, potable water, etc.; specific terms gas pipeline, oil pipeline); s «pipeline» [m] (Conducto destinado al transporte de petróleo o gas a larg...

2010-01-01T23:59:59.000Z

213

INTERNAL REPAIR OF PIPELINES  

SciTech Connect (OSTI)

The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Principal conclusions from a survey of natural gas transmission industry pipeline operators can be summarized in terms of the following performance requirements for internal repair: (1) Use of internal repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway crossings. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) The most common size range for 80% to 90% of operators surveyed is 508 mm (20 in.) to 762 mm (30 in.), with 95% using 558.8 mm (22 in.) pipe. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without liners, indicating that this type of liner is only marginally effective at restoring the pressure containing capabilities of pipelines. Failure pressures for larger diameter pipe repaired with a semi-circular patch of carbon fiber-reinforced composite lines were also marginally greater than that of a pipe section with un-repaired simulated damage without a liner. These results indicate that fiber reinforced composite liners have the potential to increase the burst pressure of pipe sections with external damage Carbon fiber based liners are viewed as more promising than glass fiber based liners because of the potential for more closely matching the mechanical properties of steel. Pipe repaired with weld deposition failed at pressures lower than that of un-repaired pipe in both the virgin and damaged conditions, indicating that this repair technology is less effective at restoring the pressure containing capability of pipe than a carbon fiber-reinforced liner repair. Physical testing indicates that carbon fiber-reinforced liner repair is the most promising technology evaluated to-date. In lieu of a field installation on an abandoned pipeline, a preliminary nondestructive testing protocol is being developed to determine the success or failure of the fiber-reinforced liner pipeline repairs. Optimization and validation activities for carbon-fiber repair methods are ongoing.

Bill Bruce; Nancy Porter; George Ritter; Matt Boring; Mark Lozev; Ian Harris; Bill Mohr; Dennis Harwig; Robin Gordon; Chris Neary; Mike Sullivan

2005-07-20T23:59:59.000Z

214

Decontamination of chemical and biological warfare (CBW) agents using an atmospheric pressure plasma jet (APPJ)  

Science Journals Connector (OSTI)

The atmospheric pressure plasma jet (APPJ) [A. Schütze et al. IEEE Trans. Plasma Sci. 26 1685 (1998)] is a nonthermal high pressure uniform glowplasmadischarge that produces a high velocity effluent stream of highly reactive chemical species. The discharge operates on a feedstock gas (e.g. He/O 2 /H 2 O ) which flows between an outer grounded cylindrical electrode and an inner coaxial electrode powered at 13.56 MHz rf. While passing through the plasma the feedgas becomes excited dissociated or ionized by electron impact. Once the gas exits the discharge volume ions and electrons are rapidly lost by recombination but the fast-flowing effluent still contains neutral metastable species (e.g. O 2 * He * ) and radicals (e.g. O OH). This reactive effluent has been shown to be an effective neutralizer of surrogates for anthrax spores and mustard blister agent. Unlike conventional wet decontamination methods the plasma effluent does not cause corrosion and it does not destroy wiring electronics or most plastics making it highly suitable for decontamination of sensitive equipment and interior spaces. Furthermore the reactive species in the effluent rapidly degrade into harmless products leaving no lingering residue or harmful by-products.

H. W. Herrmann; I. Henins; J. Park; G. S. Selwyn

1999-01-01T23:59:59.000Z

215

Gas Pipeline Safety (Indiana)  

Broader source: Energy.gov [DOE]

This section establishes the Pipeline Safety Division within the Utility Regulatory Commission to administer federal pipeline safety standards and establish minimum state safety standards for...

216

Pipeline Safety (South Dakota)  

Broader source: Energy.gov [DOE]

The South Dakota Pipeline Safety Program, administered by the Public Utilities Commission, is responsible for regulating hazardous gas intrastate pipelines. Relevant legislation and regulations...

217

Pipeline Operations Program (Louisiana)  

Broader source: Energy.gov [DOE]

The Pipeline Operations Program regulates the construction, acquisition, abandonment and interconnection of natural gas pipelines, as well as, the transportation and use of natural gas supplies.

218

Pipeline Safety (Maryland)  

Broader source: Energy.gov [DOE]

The Public Service Commission has the authority enact regulations pertaining to pipeline safety. These regulations address pipeline monitoring, inspections, enforcement, and penalties.

219

Hydrogen Pipeline Working Group  

Broader source: Energy.gov [DOE]

The Hydrogen Pipeline Working Group of research and industry experts focuses on issues related to the cost, safety, and reliability of hydrogen pipelines. Participants represent organizations...

220

Pipeline refurbishing  

SciTech Connect (OSTI)

A novel process for simultaneously removing deteriorated coatings (such as coal tar and asphalt enamel or tape) and providing surface preparation suitable for recoating has been developed for pipelines up to 36 in. (914 mm) in diameter. This patented device provides a near-white metal surface finish. Line travel or bell-hole operations are possible at rates up to 10 times conventional blasting techniques. This article describes development of a tool and machine that will remove pipeline coatings, including coal tar enamel and adhesive-backed plaster tape systems. After coating removal, the pipe surface is suitable for recoating and can be cleaned to a near-white metal finsh (Sa 2 1/2 or NACE No. 2) if desired. This cleaning system is especially useful where the new coating is incompatible with the coating to be removed, the new coating requires a near-white or better surface preparation, or no existing method has been found to remove the failed coating. This cleaning system can remove all generic coating systems including coal tar enamel, asphalt, adhesive-backed tape, fusion-bonded epoxy, polyester, and extruded polyethylene.

McConkey, S.E.

1989-04-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Pressure &Pressure & TemperatureTemperature  

E-Print Network [OSTI]

to measure atmospheric pressure, and thermometer toprobe to measure atmospheric pressure, and thermometer toprobe to measure atmospheric pressure, and thermometer toprobe to measure atmospheric pressure, and thermometer to measure air temperature.measure air temperature.measure air temperature.measure air temperature

California at Santa Cruz, University of

222

Application of a Microwave-Induced Helium Plasma Detector at Atmospheric Pressure for Gas Chromatographic Capillary Columns  

Science Journals Connector (OSTI)

......to initiate the plasma by directing a...end. After the plasma was initiated...PGM-10X2 2450 MHz microwave power...emitted from the plasma was focused through...chromatograph and the peak area was recorded...evaluate the MPD at atmospheric pressure for capillary...rate, but in large concentration......

Stanley P. Wasik; Frederick P. Schwarz

1980-12-01T23:59:59.000Z

223

PHYSICAL REVIEW E 88, 013107 (2013) Spectroscopic study of plasma evolution in runaway nanosecond atmospheric-pressure  

E-Print Network [OSTI]

PHYSICAL REVIEW E 88, 013107 (2013) Spectroscopic study of plasma evolution in runaway nanosecond atmospheric-pressure He discharges S. Yatom,1 E. Stambulchik,2 V. Vekselman,1 and Ya. E. Krasik1 1 Department-resolved visible-emission spectroscopy measurements are applied to study plasma parameters in nanosecond electrical

224

Decomposition of fluorohydrocarbons in atmospheric-pressure flowing air using coaxial-line-based microwave torch plasma  

Science Journals Connector (OSTI)

Results of the investigation of decomposition of fluorohydrocarbons C2H2F4 (HFC-134a) and CHClF2 (CFC-22) in atmospheric-pressure flowing air using a coaxial-line-based microwave torch plasma are presented. Conce...

M. Jasi?ski; P. Szczucki; M. Dors; J. Mizeraczyk…

2000-03-01T23:59:59.000Z

225

Langmuir probe diagnostics of an atmospheric pressure, vortex–stabilized nitrogen plasma jet  

Science Journals Connector (OSTI)

Langmuir probemeasurements in an atmospheric pressure direct current (dc) plasma jet are reported. Sweeping probes were used. The experiment was carried out using a dc non–transferred arc torch with a rod–type cathode and an anode of 5?mm diameter. The torch was operated at a nominal power level of 15?kW with a nitrogen flow rate of 25 Nl min?1. A flat ion saturation region was found in the current–voltage curve of the probe. The ion saturation current to a cylindrical probe in a high–pressure non local thermal equilibrium (LTE)plasma was modeled. Thermal effects and ionization/recombination processes inside the probe perturbed region were taken into account. Averaged radial profiles of the electron and heavy particle temperatures as well as the electron density were obtained. An electron temperature around 11?000?K a heavy particle temperature around 9500?K and an electron density of about 4?×?1022?m?3 were found at the jet centre at 3.5?mm downstream from the torch exit. Large deviations from kinetic equilibrium were found throughout the plasma jet. The electron and heavy particle temperature profiles showed good agreement with those reported in the literature by using spectroscopic techniques. It was also found that the temperature radial profile based on LTE was very close to that of the electrons. The calculations have shown that this method is particularly useful for studying spraying–type plasma jets characterized by electron temperatures in the range 9000–14 000?K.

L. Prevosto; H. Kelly; B. R. Mancinelli

2012-01-01T23:59:59.000Z

226

Influence of base pressure and atmospheric contaminants on a-Si:H solar cell properties  

SciTech Connect (OSTI)

The influence of atmospheric contaminants oxygen and nitrogen on the performance of thin-film hydrogenated amorphous silicon (a-Si:H) solar cells grown by plasma-enhanced chemical vapor deposition at 13.56 MHz was systematically investigated. The question is addressed as to what degree of high base pressures (up to 10{sup -4} Torr) are compatible with the preparation of good quality amorphous silicon based solar cells. The data show that for the intrinsic a-Si:H absorber layer exists critical oxygen and nitrogen contamination levels (about 2x10{sup 19} atoms/cm{sup 3} and 4x10{sup 18} atoms/cm{sup 3}, respectively). These levels define the minimum impurity concentration that causes a deterioration in solar cell performance. This critical concentration is found to depend little on the applied deposition regime. By enhancing, for example, the flow of process gases, a higher base pressure (and leak rate) can be tolerated before reaching the critical contamination level. The electrical properties of the corresponding films show that increasing oxygen and nitrogen contamination results in an increase in dark conductivity and photoconductivity, while activation energy and photosensitivity are decreased. These effects are attributed to nitrogen and oxygen induced donor states, which cause a shift of the Fermi level toward the conduction band and presumably deteriorate the built-in electric field in the solar cells. Higher doping efficiencies are observed for nitrogen compared to oxygen. Alloying effects (formation of SiO{sub x}) are observed for oxygen contaminations above 10{sup 20} atoms/cm{sup 3}, leading to an increase in the band gap.

Woerdenweber, J.; Schmitz, R.; Mueck, A.; Zastrow, U.; Niessen, L.; Gordijn, A.; Carius, R.; Beyer, W.; Rau, U. [IEF 5 Photovoltaik, Forschungszentrum Juelich GmbH, D-52425 Juelich (Germany); Merdzhanova, T.; Stiebig, H. [IEF 5 Photovoltaik, Forschungszentrum Juelich GmbH, D-52425 Juelich (Germany); Malibu GmbH and Co. KG, Boettcherstr. 7, D-33609 Bielefeld (Germany)

2008-11-01T23:59:59.000Z

227

The effects of non-thermal atmospheric pressure plasma jet on attachment of osteoblast  

Science Journals Connector (OSTI)

Despite the high success rate of dental implant surgery, the failures are still being reported and investigation have been undergone to improve attachment of osteoblast on the surface of implant material. With increasing interest in non-thermal atmospheric pressure plasma jet (NTAPPJ), the effects of it on the cellular mechanisms have been previously reported. Hence in this experiment, effects of NTAPPJ on osteoblast for improved attachment and possible application in dental implant surgery were investigated. Mouse osteoblast cells of MC3T3-E1 were first directly treated with NTAPPJ with air for various durations. Also to investigate the effects by culture media, culture media were separately treated with NTAPPJ for the same durations. Cell attachments were then assessed following 4 and 24 h of cell culture using Water Soluble Tetrazolium salt (WST) assay and confirmed by automated cell counter and examining under confocal laser microscope. The results showed that there was significantly improved osteoblast attachment with relatively short duration of NTAPPJ treatment. Also results indicated that NTAPPJ possibly improved osteoblast attachment through interactions with proteins in culture media that in turn interacted with cells. Hence the application of NTAPPJ on osteoblast improves cellular attachment and would be useful tool for dental implant surgery.

Jae-Sung Kwon; Yong Hee Kim; Eun Ha Choi; Kyoung-Nam Kim

2013-01-01T23:59:59.000Z

228

Potential cellular targets and antibacterial efficacy of atmospheric pressure non-thermal plasma  

Science Journals Connector (OSTI)

Abstract Atmospheric pressure non-thermal plasma (APNTP) has been gaining increasing interest as a new alternative antibacterial approach. Although this approach has demonstrated promising antibacterial activity, its exact mechanism of action remains unclear. Mechanistic elucidation of the antimicrobial activity will facilitate development and rational optimisation of this approach for potential medical applications. In this study, the antibacterial efficacy of an in-house-built APNTP jet was evaluated alongside an investigation of the interactions between APNTP and major cellular components in order to identify the potential cellular targets involved in plasma-mediated bacterial destruction mechanisms. The investigated plasma jet exhibited excellent, rapid antibacterial activity against a selected panel of clinically significant bacterial species including Bacillus cereus, meticillin-resistant Staphylococcus aureus (MRSA), Escherichia coli and Pseudomonas aeruginosa, all of which were completely inactivated within 2 min of plasma exposure. Plasma-mediated damaging effects were observed, to varying degrees, on all of the investigated cellular components including DNA, a model protein enzyme, and lipid membrane integrity and permeability. The antibacterial efficacy of APNTP appears to involve a multiple-target mechanism, which potentially reduces the likelihood of emergence of microbial resistance towards this promising antimicrobial approach. However, cellular membrane damage and resulting permeability perturbation was found to be the most likely rate-determining step in this mechanism.

Mahmoud Y. Alkawareek; Sean P. Gorman; William G. Graham; Brendan F. Gilmore

2014-01-01T23:59:59.000Z

229

High-rate HMDSO-based coatings in open air using atmospheric-pressure plasma jet  

Science Journals Connector (OSTI)

This work deals with the high-rate and dust-free formation of carbon-containing silicon oxide (SiOC) coatings in open air without substrate heating using an atmospheric-pressure (AP) plasma jet. The AP plasma was excited by a 13.56-MHz radio frequency (RF) power. Hexamethyldisiloxane and oxygen (O2) were used as the source gases. By optimizing the O2 flow rate and RF power, SiOC films were readily fabricated at deposition rates higher than 100 nm/s without suffering from particulate contaminations of the film surface. Additionally, an inorganic SiO2-like film exhibiting O/Si atomic ratio of approximately 2 was obtained at a deposition rate of ~ 13 nm/s, the value of which is still greater than those obtained in other AP plasma sources. Further systematic studies are needed to see if good-quality inorganic SiO2-like films can be obtained with higher rates.

H. Kakiuchi; K. Higashida; T. Shibata; H. Ohmi; T. Yamada; K. Yasutake

2012-01-01T23:59:59.000Z

230

Influence of oxygen in atmospheric-pressure argon plasma jet on sterilization of Bacillus atrophaeous spores  

Science Journals Connector (OSTI)

A nonequilibrium Ar ? O 2 plasmadischarge at atmospheric pressure was carried out in a coaxial cylindrical reactor with a stepped electrode configuration powered by a 13.56 MHz rf power supplier. The argon glow discharge with high electron density produces oxygen reactive species in large quantities. Argon plasma jets penetrate deep into ambient air and create a path for oxygen radicals to sterilize microbes. A sterilization experiment with bacterial endospores indicates that an argon-oxygen plasma jet very effectively kills endospores of Bacillus atrophaeus (ATCC 9372) thereby demonstrating its capability to clean surfaces and its usefulness for reinstating contaminated equipment as free from toxic biological warfare agents. The decimal reduction time ( D values) of the Ar ? O 2 plasma jet at an exposure distance of 0.5 – 1.5 cm ranges from 5 to 57 s . An actinometric comparison of the sterilization data shows that atomic oxygen radicals play a significant role in plasma sterilization. When observed under a scanning electron microscope the average size of the spores appears to be greatly reduced due to chemical reactions with the oxygen radicals.

Jin-Pyo Lim; Han S. Uhm; Shou-Zhe Li

2007-01-01T23:59:59.000Z

231

One-step fabrication of tetragonal ZrO2 particles by atmospheric pressure plasma jet  

Science Journals Connector (OSTI)

Abstract A novel atmospheric pressure plasma jet (APPJ) was applied to prepare the tetragonal zirconia particles via a solution of zirconyl (IV) nitrate hydrate (ZrO(NO3)2?xH2O) as the precursor. The samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The microstructure of zirconia was found to be an assembly of spherical particles with a tetragonal structure. The chemical composition of prepared zirconia particles was analyzed by XPS quantification study with an atomic ratio of O/Zr of 2.03 without nitrate residues. The results based on the one-particle-per-drop mechanism in an APPJ system also showed that the synthesis of tetragonal zirconia particles could be effectively achieved in one-step fabrication without the need for additional stabilizers or annealing process. Meanwhile, APPJ system has a great potential to be a cost-effective and time-saving process for particle production as compared to the wet chemical processes.

Yu-Ming Su; Yu-Lin Kuo; Chun-Ming Lin; Sun-Fen Lee

2014-01-01T23:59:59.000Z

232

Cold atmospheric pressure plasma and decontamination. Can it contribute to preventing hospital-acquired infections?  

Science Journals Connector (OSTI)

Summary Healthcare-associated infections (HCAIs) affect ?4.5 million patients in Europe alone annually. With the ever-increasing number of ‘multi-resistant’ micro-organisms, alternative and more effective methods of environmental decontamination are being sought as an important component of infection prevention and control. One of these is the use of cold atmospheric pressure plasma (CAPP) systems with clinical applications in healthcare facilities. \\{CAPPs\\} have been shown to demonstrate antimicrobial, antifungal and antiviral properties and have been adopted for other uses in clinical medicine over the past decade. \\{CAPPs\\} vary in their physical and chemical nature depending on the plasma-generating mechanism (e.g. plasma jet, dielectric barrier discharge, etc.). CAPP systems produce a ‘cocktail’ of species including positive and negative ions, reactive atoms and molecules (e.g. atomic oxygen, ozone, superoxide and oxides of nitrogen), intense electric fields, and ultraviolet radiation (UV). The effects of these ions have been studied on micro-organisms, skin, blood, and DNA; thus, a range of possible applications of \\{CAPPs\\} has been identified, including surface decontamination, wound healing, biofilm removal, and even cancer therapy. Here we evaluate plasma devices, their applications, mode of action and their potential role specifically in combating \\{HCAIs\\} on clinical surfaces.

N. O'Connor; O. Cahill; S. Daniels; S. Galvin; H. Humphreys

2014-01-01T23:59:59.000Z

233

Evaluation of pathogen inactivation on sliced cheese induced by encapsulated atmospheric pressure dielectric barrier discharge plasma  

Science Journals Connector (OSTI)

Abstract Pathogen inactivation induced by atmospheric pressure dielectric barrier discharge (DBD) (250 W, 15 kHz, air discharge) produced in a rectangular plastic container and the effect of post-treatment storage time on inactivation were evaluated using agar plates and cheese slices. When agar plates were treated with plasma, populations of Escherichia coli, Salmonella Typhimurium, and Listeria monocytogenes showed 3.57, 6.69, and 6.53 decimal reductions at 60 s, 45 s, and 7 min, respectively. When the pathogens tested were inoculated on cheese slices, 2.67, 3.10, and 1.65 decimal reductions were achieved at the same respective treatment times. The post-treatment storage duration following plasma treatment potently affected further reduction in pathogen populations. Therefore, the newly developed encapsulated DBD-plasma system for use in a container can be applied to improve the safety of sliced cheese, and increasing post-treatment storage time can greatly enhance the system's pathogen-inactivation efficiency.

Hae In Yong; Hyun-Joo Kim; Sanghoo Park; Amali U. Alahakoon; Kijung Kim; Wonho Choe; Cheorun Jo

2015-01-01T23:59:59.000Z

234

Control of radio-frequency atmospheric pressure argon plasma characteristics by helium gas mixing  

SciTech Connect (OSTI)

The control of plasma characteristics is one of the important issues in many atmospheric pressure plasma applications. In order to accomplish this control, a feasibility study was performed by investigating the role of helium gas in an argon glow plasma that were produced in ambient air by 13.56 MHz radio-frequency power. Optical emission spectroscopy was used to measure rotational temperature and emission spectra acquired between 300 and 840 nm. Based on electrical and optical measurements, parameters such as gas temperature, breakdown voltage, power coupling efficiency, spatial uniformity of rotational temperature, and the sum of the emission intensity were controlled by varying the argon and helium gas mixing ratio. The addition of helium gas (from 0 to 10 lpm) to the argon flow (of 10 lpm) lowered the breakdown voltage (from 430 to 300 V{sub pk}) and the rotational temperature (from 465 to 360 K). However, an excessive addition of helium resulted in a reduction of the spatial uniformity and efficiency of power coupling. When the ratio of helium to argon flow was between 0.3 and 0.5, a high spatial uniformity with a relatively low gas temperature and breakdown voltage was achieved. This suggests that mixing of the supply gas is a useful way of controlling the plasma characteristics that may be utilized for applications with specific required discharge conditions.

Moon, Se Youn; Han, Jewoo; Choe, W. [Department of Physics, Korea Advanced Institute of Science and Technology, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701 (Korea, Republic of)

2006-01-15T23:59:59.000Z

235

Influence of oxygen in atmospheric-pressure argon plasma jet on sterilization of Bacillus atrophaeous spores  

SciTech Connect (OSTI)

A nonequilibrium Ar/O{sub 2} plasma discharge at atmospheric pressure was carried out in a coaxial cylindrical reactor with a stepped electrode configuration powered by a 13.56 MHz rf power supplier. The argon glow discharge with high electron density produces oxygen reactive species in large quantities. Argon plasma jets penetrate deep into ambient air and create a path for oxygen radicals to sterilize microbes. A sterilization experiment with bacterial endospores indicates that an argon-oxygen plasma jet very effectively kills endospores of Bacillus atrophaeus (ATCC 9372), thereby demonstrating its capability to clean surfaces and its usefulness for reinstating contaminated equipment as free from toxic biological warfare agents. The decimal reduction time (D values) of the Ar/O{sub 2} plasma jet at an exposure distance of 0.5-1.5 cm ranges from 5 to 57 s. An actinometric comparison of the sterilization data shows that atomic oxygen radicals play a significant role in plasma sterilization. When observed under a scanning electron microscope, the average size of the spores appears to be greatly reduced due to chemical reactions with the oxygen radicals.

Lim, Jin-Pyo; Uhm, Han S.; Li, Shou-Zhe [Department of Molecular Science and Technology, Ajou University, San 5 Wonchon-Dong, Youngtong-Gu, Suwon 443-749 (Korea, Republic of); State Key Laboratory of Materials Modification by Laser, Ion and Electron Beams Department of Physics, Dalian University of Technology, Dalian 116024 (China)

2007-09-15T23:59:59.000Z

236

Silicon nanoparticle synthesis by short-period thermal anneals at atmospheric pressure in argon  

SciTech Connect (OSTI)

Silicon nanoparticles have been studied for a wide variety of applications including nanoelectronic, photovoltaic, and optoelectronic devices. In this work, silicon nanoparticles were synthesized by short-period annealing of silicon-on-insulator substrates to temperatures ranging between 600 and 900 deg. C in argon gas at atmospheric pressure. Two different top silicon layers were deposited by ion-beam sputtering onto oxidized substrates. The thinner 6 nm top layer samples were annealed to temperatures for 30 s periods while thicker 15 nm top layer samples were annealed for 60 s periods. For both sets of samples, nanoparticles were observed to form at all the anneal temperatures through imaging by AFM. One long-period UHV anneal study, with 30-min anneal times, observed nanoparticle formation at temperatures similar to the current work while another similar long-period UHV anneal reported nanoparticle formation only above well-defined formation temperatures that depended upon the starting top layer thickness. In the current work, the average nanoparticle radius was found to increase both with the final anneal temperature and anneal period. For the highest anneal temperatures of the 6 nm top layer samples, a changing surface topography indicated that the thinner Si source layer was becoming depleted and the nanoparticle formation process was nearing completion. No such changes were observed for the thicker 15 nm samples at the same temperatures.

Spencer, Gregory; Anyamesem-Mensah, Benedict; Galloway, Heather C.; Bandyopadhyay, Anup; Frasier, Daniel [Department of Physics, Texas State University-San Marcos, San Marcos, Texas 78666 (United States); Department of Materials Science and Engineering, University of North Texas, Denton, Texas 76207 (United States); Department of Physics, Texas State University-San Marcos, San Marcos, Texas 78666 (United States)

2011-09-15T23:59:59.000Z

237

Step-coverage simulation for tetraethoxysilane and ozone atmospheric pressure chemical vapor deposition  

SciTech Connect (OSTI)

A simulation model for atmospheric pressure (AP) CVD has bee developed using one-dimensional diffusion and mass conservation equations. The model was applied to trench step-coverage of the tetraethoxysilane (TEOS) and O[sub 3] CVD, in which it was not necessary to consider lateral diffusion because of narrow (and deep) trenches. For nondoped silicate glass (NSG), the step-coverage of a 4.5 aspect ratio trench showed a good fit if a sticking probability of 0.0039 was assumed for the 0.6% ozone (in oxygen) deposition and of 0.0026 for the 6% ozone deposition (both 400 C). The reaction rate constant was compared with the diffusion mass-transfer coefficient, and the reaction proved to be limited by diffusion of the reactant, TEOS, which directly participated in the CVD reaction. For the 2 m/o phosphosilicate glass (PSG) step-coverage, which had a slight overhang, the model matched the obtained results well only when an active growth species with a high sticking probability of 1.0 was added to the growth species of nondoped oxide. This analytical simulation method satisfactorily explains the experimental data.

Fujino, K. (Semiconductor Process Lab., Toyko (Japan)); Egashira, Y.; Shimogaki, Y.; Komiyama, H. (Univ. of Tokyo, (Japan). Dept. of Chemical Engineering)

1993-08-01T23:59:59.000Z

238

Constraints on early Mars atmospheric pressure1 inferred from small ancient craters2  

E-Print Network [OSTI]

the history of Mars' atmosphere. Wind erosio . Of particular interest is the climate that allowed rivers to flow early12 in Mars history, which was affected thicker atmospheres: the modern Mars atmosphere can remove >90% of33 the kinetic energy of >240 kg

Kite, Edwin

239

Aspen Pipeline | Open Energy Information  

Open Energy Info (EERE)

Aspen Pipeline Jump to: navigation, search Name: Aspen Pipeline Place: Houston, Texas Zip: 77057 Product: US firm which acquires, builds and owns pipelines, gathering systems and...

240

Flammability Characteristics of Hydrogen and Its Mixtures with Light Hydrocarbons at Atmospheric and Sub-atmospheric Pressures  

E-Print Network [OSTI]

of hydrogen and each hydrocarbon were determined experimentally at room temperature (20ºC) and initial pressures ranging from 1.0 atm to 0.1 atm. The experiments were conducted in a closed cylindrical stainless steel vessel with upward flame propagation...

Le, Thuy Minh Hai

2013-07-13T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

On-line coating of glass with tin oxide by atmospheric pressure chemical vapor deposition.  

SciTech Connect (OSTI)

Atmospheric pressure chemical vapor deposition (APCVD) of tin oxide is a very important manufacturing technique used in the production of low-emissivity glass. It is also the primary method used to provide wear-resistant coatings on glass containers. The complexity of these systems, which involve chemical reactions in both the gas phase and on the deposition surface, as well as complex fluid dynamics, makes process optimization and design of new coating reactors a very difficult task. In 2001 the U.S. Dept. of Energy Industrial Technologies Program Glass Industry of the Future Team funded a project to address the need for more accurate data concerning the tin oxide APCVD process. This report presents a case study of on-line APCVD using organometallic precursors, which are the primary reactants used in industrial coating processes. Research staff at Sandia National Laboratories in Livermore, CA, and the PPG Industries Glass Technology Center in Pittsburgh, PA collaborated to produce this work. In this report, we describe a detailed investigation of the factors controlling the growth of tin oxide films. The report begins with a discussion of the basic elements of the deposition chemistry, including gas-phase thermochemistry of tin species and mechanisms of chemical reactions involved in the decomposition of tin precursors. These results provide the basis for experimental investigations in which tin oxide growth rates were measured as a function of all major process variables. The experiments focused on growth from monobutyltintrichloride (MBTC) since this is one of the two primary precursors used industrially. There are almost no reliable growth-rate data available for this precursor. Robust models describing the growth rate as a function of these variables are derived from modeling of these data. Finally, the results are used to conduct computational fluid dynamic simulations of both pilot- and full-scale coating reactors. As a result, general conclusions are reached concerning the factors affecting the growth rate in on-line APCVD reactors. In addition, a substantial body of data was generated that can be used to model many different industrial tin oxide coating processes. These data include the most extensive compilation of thermochemistry for gas-phase tin-containing species as well as kinetic expressions describing tin oxide growth rates over a wide range of temperatures, pressures, and reactant concentrations.

Allendorf, Mark D.; Sopko, J.F. (PPF Industries, Pittsburgh, PA); Houf, William G.; Chae, Yong Kee; McDaniel, Anthony H.; Li, M. (PPF Industries, Pittsburgh, PA); McCamy, J.W. (PPF Industries, Pittsburgh, PA)

2006-11-01T23:59:59.000Z

242

INTERNAL REPAIR OF PIPELINES  

SciTech Connect (OSTI)

The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Principal conclusions from a survey of natural gas transmission industry pipeline operators can be summarized in terms of the following performance requirements for internal repair: (1) Use of internal repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway crossings. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) The most common size range for 80% to 90% of operators surveyed is 508 mm (20 in.) to 762 mm (30 in.), with 95% using 558.8 mm (22 in.) pipe. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without liners, indicating that this type of liner is only marginally effective at restoring the pressure containing capabilities of pipelines. Failure pressures for larger diameter pipe repaired with a semi-circular patch of carbon fiber-reinforced composite lines were also marginally greater than that of a pipe section with un-repaired simulated damage without a liner. These results indicate that fiber reinforced composite liners have the potential to increase the burst pressure of pipe sections with external damage Carbon fiber based liners are viewed as more promising than glass fiber based liners because of the potential for more closely matching the mechanical properties of steel. Pipe repaired with weld deposition failed at pressures lower than that of un-repaired pipe in both the virgin and damaged conditions, indicating that this repair technology is less effective at restoring the pressure containing capability of pipe than a carbon fiber-reinforced liner repair. Physical testing indicates that carbon fiber-reinforced liner repair is the most promising technology evaluated to-date. The first round of optimization and validation activities for carbon-fiber repairs are complete. Development of a comprehensive test plan for this process is recommended for use in the field trial portion of this program.

Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; George Ritter; Bill Mohr; Matt Boring; Nancy Porter; Mike Sullivan; Chris Neary

2004-12-31T23:59:59.000Z

243

INTERNAL REPAIR OF PIPELINES  

SciTech Connect (OSTI)

The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Principal conclusions from a survey of natural gas transmission industry pipeline operators can be summarized in terms of the following performance requirements for internal repair: (1) Use of internal repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) The most common size range for 80% to 90% of operators surveyed is 508 mm (20 in.) to 762 mm (30 in.), with 95% using 558.8 mm (22 in.) pipe. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without liners, indicating that this type of liner is only marginally effective at restoring the pressure containing capabilities of pipelines. Failure pressures for larger diameter pipe repaired with a semi-circular patch of carbon fiber-reinforced composite lines were also marginally greater than that of a pipe section with un-repaired simulated damage without a liner. These results indicate that fiber reinforced composite liners have the potential to increase the burst pressure of pipe sections with external damage Carbon fiber based liners are viewed as more promising than glass fiber based liners because of the potential for more closely matching the mechanical properties of steel. Pipe repaired with weld deposition failed at pressures lower than that of un-repaired pipe in both the virgin and damaged conditions, indicating that this repair technology is less effective at restoring the pressure containing capability of pipe than a carbon fiber-reinforced liner repair. Physical testing indicates that carbon fiber-reinforced liner repair is the most promising technology evaluated to-date. Development of a comprehensive test plan for this process is recommended for use in the field trial portion of this program.

Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; George Ritter; Bill Mohr; Matt Boring; Nancy Porter; Mike Sullivan; Chris Neary

2004-08-17T23:59:59.000Z

244

Simple method for preparing hydrogenated amorphous silicon films by chemical vapor deposition at atmospheric pressure  

SciTech Connect (OSTI)

An inexpensive one-step method is presented for fabricating hydrogenated amorphous silicon (a-Si:H) films with good photovoltaic properties using chemical vapor deposition (CVD) from a mixture of silane, disilane, trisilane, and higher polysilanes in hydrogen at one atmosphere total pressure. The gas mixture is generated by the action of dilute acid on magnesium silicide and used immediately in the CVD process. Thus, elaborate techniques for handling, transporting or storing the pyrophoric polysilanes are avoided. In addition, the method requires no expensive vacuum or electrical equipment. The conditions necessary for high (approx. =10%) hydrogen incorporation and very high deposition rates (50-100 A/sec) are explained. Experimental parameters are explained and properties as a function of these parameters are shown. The measurements include hydrogen content, optical, electrical and photovoltaic properties of the a-Si:H films. A chemical kinetic model is presented for this and other silane and polysilane CVD systems between about 400 and 600/sup 0/C. Both homogeneous and heterogeneous reactions are considered. The model is derived from homogeneous gas-phase silane and polysilane chemistry and predicts, in agreement with our experiments, that the homogeneous gas-phase chemistry determines the a-Si:H film growth rate under a variety of conditions. The model is sufficiently predictive to be useful in determining appropriate experimental conditions. Stable solar cells are proposed for a-Si:H and fluorine doped tin oxide which can be produced by CVD at very high deposition rates. The unstable a-Si:H/tin oxide interface is eliminated by a very thin layer of titanium nitride and oxide between the a-Si:H and tin oxide.

Ellis, F.B. Jr.

1983-01-01T23:59:59.000Z

245

Plasma treatment of carbon fibres and glass-fibre-reinforced polyesters at atmospheric pressure for adhesion improvement  

Science Journals Connector (OSTI)

Atmospheric pressure plasma treatment is useful for adhesion improvement, because cleaning, roughening and addition of polar functional groups can be expected at the surfaces. Its possible applications in the wind energy industry include plasma treatment of fibres and fibre-reinforced polymer composites before assembling them to build wind turbine blades. In the present work, unsized carbon fibres are continuously treated using a dielectric barrier discharge plasma in helium at atmospheric pressure, and carbon fibre reinforced epoxy composite plates are manufactured for the mechanical test. The plasma treatment improved fracture toughness, indicating that adhesion between the fibres and the epoxy was enhanced by the treatment. In addition, glass-fibre-reinforced polyester plates are treated using a gliding arc and an ultrasound enhanced dielectric barrier discharge, improving the wettability and/or the adhesive strength with a vinylester resin.

Yukihiro Kusano; Tom L. Andersen; Helmuth L. Toftegaard; Frank Leipold; Alexander Bardenshtein; Niels Krebs

2014-01-01T23:59:59.000Z

246

Nonequilibrium atmospheric pressure plasma jet using a combination of 50?kHz/2?MHz dual-frequency power sources  

Science Journals Connector (OSTI)

An atmospheric pressure plasma jet is generated by dual sinusoidal wave (50?kHz and 2?MHz). The dual-frequency plasma jet exhibits the advantages of both low frequency and radio frequency plasmas namely the long plasma plume and the high electron density. The radio frequency ignition voltage can be reduced significantly by using dual-frequency excitation compared to the conventional radio frequency without the aid of the low frequency excitation source. A larger operating range of ? mode discharge can be obtained using dual-frequency excitation which is important to obtain homogeneous and low-temperature plasma. A larger controllable range of the gas temperature of atmospheric pressure plasma could also be obtained using dual-frequency excitation.

Yong-Jie Zhou; Qiang-Hua Yuan; Fei Li; Xiao-Min Wang; Gui-Qin Yin; Chen-Zhong Dong

2013-01-01T23:59:59.000Z

247

A passive measurement of dissociated atom densities in atmospheric pressure air discharge plasmas using vacuum ultraviolet self-absorption spectroscopy  

SciTech Connect (OSTI)

We demonstrate a method for determining the dissociation degree of atmospheric pressure air discharges by measuring the self-absorption characteristics of vacuum ultraviolet radiation from O and N atoms in the plasma. The atom densities are determined by modeling the amount of radiation trapping present in the discharge, without the use of typical optical absorption diagnostic techniques which require external sources of probing radiation into the experiment. For an 8.0?mm spark discharge between needle electrodes at atmospheric pressure, typical peak O atom densities of 8.5?×?10{sup 17}?cm{sup ?3} and peak N atom densities of 9.9?×?10{sup 17}?cm{sup ?3} are observed within the first ?1.0?mm of plasma near the anode tip by analyzing the OI and NI transitions in the 130.0–132.0?nm band of the vacuum ultraviolet spectrum.

Laity, George [Center for Pulsed Power and Power Electronics, Department of Electrical and Computer Engineering and Department of Physics, Texas Tech University, Lubbock, Texas 79409 (United States); Applied Science and Technology Maturation Department, Sandia National Laboratories, Albuquerque, New Mexico 87123 (United States); Fierro, Andrew; Dickens, James; Neuber, Andreas [Center for Pulsed Power and Power Electronics, Department of Electrical and Computer Engineering and Department of Physics, Texas Tech University, Lubbock, Texas 79409 (United States); Frank, Klaus [Erlangen Centre for Astroparticle Physics, Department of Physics, Friedrich–Alexander University at Erlangen-Nürnberg, 91058 Erlangen (Germany)

2014-03-28T23:59:59.000Z

248

Nanosecond discharge in air at atmospheric pressure as an x-ray source with high pulse repetition rates  

SciTech Connect (OSTI)

The properties of x-ray radiation and runaway electrons produced using a nanosecond volume discharge are examined. X-ray radiation at a pulse repetition rate of 3 kHz was obtained time in a gas diode filled with air at atmospheric pressure. The current pulse width (FWHM) for runaway electrons generated in the gas diode was {approx}100 ps. A prepulse was observed on an oscilloscope trace of the main runaway electron beam current.

Tarasenko, Victor F. [Institute of High Current Electronics, Siberian Branch of the Russian Academy of Sciences, Tomsk 634021, pr. Akademicheskii 2/3 (Russian Federation)

2006-02-20T23:59:59.000Z

249

Eradication of marine biofilms by atmospheric pressure non-thermal plasma: A potential approach to control biofouling?  

Science Journals Connector (OSTI)

Abstract Although the antimicrobial activity of atmospheric pressure non-thermal plasmas, including its capacity to eradicate microbial biofilms, has been gaining an ever increasing interest for different medical applications, its potential utilisation in the control of biofouling and biodeterioration has, to date, received no attention. In this study, the ability of atmospheric pressure plasma to eradicate biofilms of four biofouling bacterial species, frequently encountered in marine environments, was investigated. Biofilms were grown on both polystyrene and stainless steel surfaces before being exposed to the plasma source. Viability and biomass of biofilms were evaluated using colony count method and differential Live/Dead fluorescence staining followed by confocal laser scanning microscopy. Rapid and complete eradication of all biofilms under study was achieved after plasma exposures ranging from 60 to 120 s. Confocal microscopy examination showed that plasma treatment has mediated not only cell killing but also varying degrees of physical removal of biofilms. Further investigation and tailored development of atmospheric pressure non-thermal plasma sources for this particular application could provide an additional powerful and effective weapon in the current anti-biofouling armamentarium.

Mahmoud Y. Alkawareek; Sean P. Gorman; William G. Graham; Brendan F. Gilmore

2014-01-01T23:59:59.000Z

250

Numerical and experimental study on laminar burning velocity of syngas produced from biomass gasification in sub-atmospheric pressures  

Science Journals Connector (OSTI)

Abstract The laminar burning velocity of syngas mixtures has been studied by various researches. However, most of these studies have been conducted in atmospheric conditions at sea level. In the present study, the effect of sub atmospheric pressure was evaluated on the laminar burning velocity for a mixture of H2, CO and N2 (20:20:60 vol%) in real sub atmospheric condition. The measurements was conducted in an altitude of 2130 m.a.s.l (0.766 atm) and 21 m.a.s.l (0.994 atm) to evaluate the effect of pressure, the temperature and relative humidity were controlled using an air conditioning unit and was maintained in 295 ± 1 K and 62.6 ± 2.7% respectively. The Flames were generated using contoured slot-type nozzle burner, and an ICCD camera was used to capture chemiluminescence emitted by OH?-CH? radicals present in the flame and thus obtain the flame front and determinate the laminar burning velocity using the angle method. The experimental results were compared with numerical calculations, conducted using the detailed mechanisms of Li et al. and the GRI-Mech 3.0. It was found that the laminar burning velocity increases at lower pressure, for an equivalence ratio of 1.1, the laminar burning velocity increases by almost 23% respect to the sea level conditions.

Andres A. Amell; Hernando A. Yepes; Francisco J. Cadavid

2014-01-01T23:59:59.000Z

251

E-Print Network 3.0 - atmospheric pressure nitrogen Sample Search...  

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

study over the temperature range... studied for comparison with oxygen and nitrogen adsorption over the pressure range 0-1.8 kPa for pressure... is the industrial separation of...

252

Micro-structured electrode arrays:: high-frequency discharges at atmospheric pressure—characterization and new applications  

Science Journals Connector (OSTI)

Micro-structured electrode (MSE) arrays allow to generate large-area uniform glow discharges over a wide pressure range up to atmospheric pressure. The electrode dimensions in the ?m-range realized by means of modern micro-machining and galvanic techniques are small enough to generate sufficiently high electric field strengths to ignite gas discharges applying only moderate radio frequency (RF, 13.56 MHz) voltages (80–390 V in Ne, He, Ar and N2). The non-thermal plasma system is characterized by a special probe measuring the electric parameters. The MSE-driven plasmas show a different behavior from conventional discharge plasmas depending on the pressure and the type of gas. With the MSE arrays as plasma sources, several applications were developed and successfully tested: Plasma chemistry (decomposition of waste gases like CF4) and thin film deposition (e.g. SiO2 layers on various substrates). A new atmospheric pressure application realized in our lab is the sterilization of food packaging materials.

Lutz Baars-Hibbe; Christian Schrader; Philipp Sichler; Thorben Cordes; Karl-Heinz Gericke; Stephanus Büttgenbach; Siegfried Draeger

2004-01-01T23:59:59.000Z

253

Passive landfill gas emission – Influence of atmospheric pressure and implications for the operation of methane-oxidising biofilters  

Science Journals Connector (OSTI)

A passively vented landfill site in Northern Germany was monitored for gas emission dynamics through high resolution measurements of landfill gas pressure, flow rate and composition as well as atmospheric pressure and temperature. Landfill gas emission could be directly related to atmospheric pressure changes on all scales as induced by the autooscillation of air, diurnal variations and the passage of pressure highs and lows. Gas flux reversed every 20 h on average, with 50% of emission phases lasting only 10 h or less. During gas emission phases, methane loads fed to a connected methane oxidising biofiltration unit varied between near zero and 247 g CH4 h?1 m?3 filter material. Emission dynamics not only influenced the amount of methane fed to the biofilter but also the establishment of gas composition profiles within the biofilter, thus being of high relevance for biofilter operation. The duration of the gas emission phase emerged as most significant variable for the distribution of landfill gas components within the biofilter.

Julia Gebert; Alexander Groengroeft

2006-01-01T23:59:59.000Z

254

Pipeline Construction Guidelines (Indiana)  

Broader source: Energy.gov [DOE]

The Division of Pipeline Safety of the Indiana Utility Regulatory Commission regulates the construction of any segment of an interstate pipeline on privately owned land in Indiana. The division has...

255

Pipeline Safety Rule (Tennessee)  

Broader source: Energy.gov [DOE]

The Pipeline Safety Rule simply states, "The Minimum Federal Safety Standards for the transportation of natural and other gas by pipeline (Title 49, Chapter 1, Part 192) as published in the Federal...

256

Laser schlieren deflectometry for temperature analysis of filamentary non-thermal atmospheric pressure plasma  

Science Journals Connector (OSTI)

The heat convection generated by micro filaments of a self-organized non-thermal atmospheric pressure plasma jet in Ar is characterized by employing laser schlieren deflectometry (LSD). It is demonstrated as a proof of principle that the spatial and temporal changes of the refractive indexn in the optical beam path related to the neutral gas temperature of the plasma jet can be monitored and evaluated simultaneously. The refraction of a laser beam in a high gradient field of n(r) with cylindrical symmetry is given for a general real refraction index profile. However the usually applied Abel approach represents an ill-posed problem and in particular for this plasma configuration. A simple analytical model is proposed in order to minimize the statistical error. Based on that the temperature profile specifically the absolute temperature in the filament core the FWHM and the frequencies of the collective filament dynamics are obtained for non-stationary conditions. For a gas temperature of 700 K inside the filament the presented model predicts maximum deflection angles of the laser beam of 0.3 mrad which is in accordance to the experimental results obtained with LSD. Furthermore the experimentally obtained FWHM of the temperature profile produced by the filament at the end of capillary is (1.5 ± 0.2) mm which is about 10 times wider than the visual radius of the filament. The obtained maximum temperature in the effluent is (450 ± 30) K and is in consistence with results of other techniques. The study demonstrates that LSD represents a useful low-cost method for monitoring the spatiotemporal behaviour of microdischarges and allows to uncover their dynamic characteristics e.g. the temperature profile even for challenging diagnostic conditions such as moving thin discharge filaments. The method is not restricted to the miniaturized and self-organizedplasma studied here. Instead it can be readily applied to other configurations that produce measurable gradients of refractive index by local gas heating and opens new diagnostics prospects particularly for microplasmas.

J. Schäfer; R. Foest; S. Reuter; T. Kewitz; J. Šperka; K.-D. Weltmann

2012-01-01T23:59:59.000Z

257

Optical and electrical characterization of pulse-modulated argon atmospheric-pressure inductively coupled microplasma jets  

SciTech Connect (OSTI)

The critical parameters determining the generation of the pulse-modulated argon atmospheric-pressure inductively coupled plasma (AP-ICP) microjet were studied by varying the power, P, pulse-modulation frequency, f, and duty ratio, DR. The temporal changes in the net output power, P{sub net}, monitored between the very high frequency power supply and matching network by an rf sampler, and ArI 4s{sup '}[1/2]{sub 1}{sup O}-4p{sup '}[1/2]{sub 0} emission from the antenna were measured to elucidate the behavior of this plasma. The AP-ICP microjet, which produces high-density (0.9-1.1x10{sup 15} cm{sup -3}) nonequilibrium plasma, consists of an alumina discharge tube with the inner diameter of 0.8 mm. The generation diagram of the pulse-modulated plasma was created by having f as the horizontal axis and DR as the vertical axis while varying P up to 50 W. At f{<=}10 kHz, the plasma was generated at above the linear lines of f and DR, which indicated the existence of the critical power-off period of approximately 80 {mu}s. At f>10 kHz, the pulse-modulated plasma was produced above constant DR and almost independent of f. The time-averaged power, P, which is the product of P and DR, had to be more than 8-10 W to sustain the pulse-modulated plasma. From the measurement of the temporal changes in the net power and ArI emission, the dynamic behavior of the pulse-modulated plasma was revealed as follows. The prebreakdown period was present for {approx}5 {mu}s after the power was turned on. Once the plasma was generated, the impedance was changed and the reflected power gradually decreased. A strong emission peak was observed immediately after the breakdown, followed by the gradual increase up to the steady state. Finally, the intense afterpeak was observed at 0.8 {mu}s after the power was turned off.

Tajima, Satomi; Tsuchiya, Shouichi [Department of Bioengineering, Graduate School of Engineering, University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656 (Japan); Matsumori, Masashi; Nakatsuka, Shigeki [Panasonic Factory Solutions Co., Ltd., 2-7 Matsuba-cho, Kadoma-city, Osaka 571-8502 (Japan); Ichiki, Takanori [Department of Bioengineering, Graduate School of Engineering, University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656 (Japan); Institute of Engineering Innovation, Graduate School of Engineering, University of Tokyo, 2-11-16 Yayoi, Bunkyo-ku, Tokyo 113-8656 (Japan)

2010-10-15T23:59:59.000Z

258

Keystone XL pipeline update  

Broader source: Energy.gov [DOE]

Questions have been raised recently about the Keystone XL pipeline project, so we wanted to make some points clear.

259

Pipeline operation and safety  

SciTech Connect (OSTI)

Safety is central to the prosperity of the pipeline industry and the need to maintain high standards of the safety at all times is of paramount importance. Therefore, a primary concern of pipeline operator is adequate supervision and the control of the operation of pipelines. Clearly defined codes of practice, standards and maintenance schedules are necessary if protection is to be afforded to the pipeline system employees, the public at large, and the environment.

Tadors, M.K. [Petroleum Pipelines Co., Cairo (Egypt)

1996-12-31T23:59:59.000Z

260

RETROSPECTIVE: Software Pipelining  

E-Print Network [OSTI]

- cialized hardware designed to support software pipelining. In the meantime, trace scheduling was touted compiler with software pipelining for the polycyclic architecture, which had a novel crossbar whose crossRETROSPECTIVE: Software Pipelining: An Effective Scheduling Technique for VLIW Machines Monica S

Pratt, Vaughan

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Novel AC and DC Non-Thermal Plasma Sources for Cold Surface Treatment of Polymer Films and Fabrics at Atmospheric Pressure  

Science Journals Connector (OSTI)

Novel types of non-thermal plasma sources at atmospheric pressure based on multi-pin DC (direct ... ofdischarges mentioned and output energy characteristics of new plasma sources as well as data on after-...

Yuri Akishev; Michail Grushin; Anatoly Napartovich…

2002-09-01T23:59:59.000Z

262

Two-Temperature Two-Dimensional Non Chemical Equilibrium Modeling of Ar–CO2–H2 Induction Thermal Plasmas at Atmospheric Pressure  

Science Journals Connector (OSTI)

Here the authors developed a two-dimensional two-temperature chemical non-equilibrium (2T-NCE) model of Ar–...2–H2 inductively coupled thermal plasmas (ICTP) around atmospheric pressure (760 torr). Assuming 22 di...

Sharif Abdullah Al-Mamun; Yasunori Tanaka…

2010-02-01T23:59:59.000Z

263

Measurement of Reactive Hydroxyl Radical Species Inside the Biosolutions During Non-thermal Atmospheric Pressure Plasma Jet Bombardment onto the Solution  

Science Journals Connector (OSTI)

Non-thermal atmospheric pressure plasma jet could generate various kinds of radicals ... The electron temperature and ion density for this non-thermal plasma jet have been measured to be about...13 cm?3 in this e...

Yong Hee Kim; Young June Hong; Ku Youn Baik…

2014-05-01T23:59:59.000Z

264

Room-Temperature Silicon Nitrides Prepared with Very High Rates (>50 nm/s) in Atmospheric-Pressure Very High-Frequency Plasma  

Science Journals Connector (OSTI)

We have investigated the structure and stability of SiN x ...films deposited with very high rates (>50 nm/s) in atmospheric-pressure (AP) He-based plasma excited by a 150 MHz ver...

Hiroaki Kakiuchi; Hiromasa Ohmi; Kei Nakamura…

2010-10-01T23:59:59.000Z

265

Low-temperature atmospheric pressure argon plasma treatment and hybrid laser-plasma ablation of barite crown and heavy flint glass  

Science Journals Connector (OSTI)

We report on atmospheric pressure argon plasma-based surface treatment and hybrid laser-plasma ablation of barite crown glass N-BaK4 and heavy flint glass SF5. By pure plasma...

Gerhard, Christoph; Roux, Sophie; Brückner, Stephan; Wieneke, Stephan; Viöl, Wolfgang

2012-01-01T23:59:59.000Z

266

Effect of Plasma Deposition Using Low-Power/Non-thermal Atmospheric Pressure Plasma on Promoting Adhesion of Composite Resin to Enamel  

Science Journals Connector (OSTI)

...This study investigated the effect of monomer deposition through a low-power, non-thermal atmospheric pressure plasma (NT-APP) on adhesion of resin ... stereomicroscope and a scanning electron microscope. The

Geum-Jun Han; Jae-Hoon Kim; Sung-No Chung…

2014-07-01T23:59:59.000Z

267

The effect of plasma polymer coating using atmospheric-pressure glow discharge on the shear bond strength of composite resin to ceramic  

Science Journals Connector (OSTI)

If plasma technology can come out of the vacuum chamber and plasma can be extruded through a small pencil- ... we designed a small pencil-type non-thermal atmospheric-pressure glow discharge plasma torch. The pur...

Byeong-Hoon Cho; Geum-Jun Han; Kyu-Hwan Oh; Sung-No Chung…

2011-04-01T23:59:59.000Z

268

Decomposition Mechanism of Fluorinated Compounds in Water Plasmas Generated Under Atmospheric Pressure  

Science Journals Connector (OSTI)

We developed a DC water plasma torch which with a cathode of...16...]. The hafnium used as cathode material can overcome the erosion problems and achieve a long operating time in oxidation atmospheric. The torch ...

Narengerile; Hironori Saito; Takayuki Watanabe

2010-12-01T23:59:59.000Z

269

Program permits fast solution to pipeline loop requirements  

SciTech Connect (OSTI)

A program developed for the HP-41CV hand-held calculator can provide pipeline engineers with a quick and easy means for determining loop requirements on existing gas-transmission pipelines. Adding pipe in parallel to an existing pipeline, referred to as looping, is necessary to insure that with a given flow rate, the gas will arrive at a certain point on the pipeline with a pressure equal to or greater than the minimum required pressure. The automatic loop program calculates loop by first determining the total number of segments which require looping within the section of pipeline being evaluated. A section of pipe is usually the pipeline between compressor stations and is divided into segments by either receipt or delivery points along the pipeline. The number of segments which require looping is found by adding loop to individual segments until the final pressure (i.e., the pressure at the point of interest downstream on the pipeline) is equal to or greater than the specified design pressure.

Bierman, G.D.

1983-10-31T23:59:59.000Z

270

Sleeve installations speed pipeline defect repair  

SciTech Connect (OSTI)

Repairing defects in pipelines can be a major challenge for pipeline companies or contractors. To reduce cost and eliminate unscheduled shut downs, pipeline operating companies have adopted ``in-service`` repair methods to restore overall integrity of the pipeline without taking it out of service. Interprovincial Pipe Line Co. has undertaken an aggressive approach to this ``in-service`` repair method by using a developed sleeving system for repairing leaking and non-leaking defects. A structural reinforcement sleeve consists of two non-fillet welded collars (one on each side of the defect) and a full encirclement sleeve welded on top of these collars. The annular space between the pipe and sleeve is filled with a hardenable, non-shrinking epoxy. Three different pressure vessel sleeves can be used for repairing certain defects. They can be used in combination with the pre-stressed sleeve or for independent repairs. This paper reviews the performance and installation of these sleeves.

Friedrich, J.; Smith, J.

1995-12-01T23:59:59.000Z

271

Collection of Samples Under Pressure for Chromatographic Analysis and a System for Handling Gas-Condensate Type Fluids  

Science Journals Connector (OSTI)

......Conference on AGA Pipeline Condensation Project, June 28, 1973...each tube, and both exit to atmospheric pressure at the outlet of...to the few millimeters of water in the lines con- necting...variations to the detector; the recovery time after backflushing was......

R. H. Jacoby; J. H. Tracht

1975-01-01T23:59:59.000Z

272

INTERNAL REPAIR OF PIPELINES  

SciTech Connect (OSTI)

The two broad categories of deposited weld metal repair and fiber-reinforced composite liner repair technologies were reviewed for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Preliminary test programs were developed for both deposited weld metal repair and for fiber-reinforced composite liner repair. Evaluation trials have been conducted using a modified fiber-reinforced composite liner provided by RolaTube and pipe sections without liners. All pipe section specimens failed in areas of simulated damage. Pipe sections containing fiber-reinforced composite liners failed at pressures marginally greater than the pipe sections without liners. The next step is to evaluate a liner material with a modulus of elasticity approximately 95% of the modulus of elasticity for steel. Preliminary welding parameters were developed for deposited weld metal repair in preparation of the receipt of Pacific Gas & Electric's internal pipeline welding repair system (that was designed specifically for 559 mm (22 in.) diameter pipe) and the receipt of 559 mm (22 in.) pipe sections from Panhandle Eastern. The next steps are to transfer welding parameters to the PG&E system and to pressure test repaired pipe sections to failure. A survey of pipeline operators was conducted to better understand the needs and performance requirements of the natural gas transmission industry regarding internal repair. Completed surveys contained the following principal conclusions: (1) Use of internal weld repair is most attractive for river crossings, under other bodies of water, in difficult soil conditions, under highways, under congested intersections, and under railway crossings. (2) Internal pipe repair offers a strong potential advantage to the high cost of horizontal direct drilling (HDD) when a new bore must be created to solve a leak or other problem. (3) Typical travel distances can be divided into three distinct groups: up to 305 m (1,000 ft.); between 305 m and 610 m (1,000 ft. and 2,000 ft.); and beyond 914 m (3,000 ft.). All three groups require pig-based systems. A despooled umbilical system would suffice for the first two groups which represents 81% of survey respondents. The third group would require an onboard self-contained power unit for propulsion and welding/liner repair energy needs. (4) Pipe diameter sizes range from 50.8 mm (2 in.) through 1,219.2 mm (48 in.). The most common size range for 80% to 90% of operators surveyed is 508 mm to 762 mm (20 in. to 30 in.), with 95% using 558.8 mm (22 in.) pipe. An evaluation of potential repair methods clearly indicates that the project should continue to focus on the development of a repair process involving the use of GMAW welding and on the development of a repair process involving the use of fiber-reinforced composite liners.

Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; Nancy Porter; Mike Sullivan; Chris Neary

2004-04-12T23:59:59.000Z

273

Analytic prognostic for petrochemical pipelines  

E-Print Network [OSTI]

Pipelines tubes are part of vital mechanical systems largely used in petrochemical industries. They serve to transport natural gases or liquids. They are cylindrical tubes and are submitted to the risks of corrosion due to high PH concentrations of the transported liquids in addition to fatigue cracks due to the alternation of pressure-depression of gas along the time, initiating therefore in the tubes body micro-cracks that can propagate abruptly to lead to failure. The development of the prognostic process for such systems increases largely their performance and their availability, as well decreases the global cost of their missions. Therefore, this paper deals with a new prognostic approach to improve the performance of these pipelines. Only the first mode of crack, that is, the opening mode, is considered.

Abdo Abou Jaoude; Seifedine Kadry; Khaled El-Tawil; Hassan Noura; Mustapha Ouladsine

2012-12-25T23:59:59.000Z

274

Deposition of Plasma Polymer Films by an Atmospheric Pressure Glow Discharge  

Science Journals Connector (OSTI)

Plasma assisted chemical vapor deposition is a proven ... . The application of non-thermal low pressure plasmas containing organic compounds for thin film deposition by plasma polymerization is well known1.... Th...

Rüdiger Foest; Florian Sigeneger; Martin Schmidt

2001-01-01T23:59:59.000Z

275

Atmospheric pressure chemical vapor deposition of TiN from tetrakis(dimethylamido)titanium and ammonia  

E-Print Network [OSTI]

pressure chemical vapor deposition. Experiments were conducted in a belt furnace; static experiments, in particular, is used for tool coating, solar-control films, and micro- electronic applications. Optically

276

Enhancement of film-forming reactions for microcrystalline Si growth in atmospheric-pressure plasma using porous carbon electrode  

Science Journals Connector (OSTI)

We have investigated the structural and electrical properties of microcrystalline silicon ( ? c -Si : H ) filmsdeposited with high rates ( ? 5 ? nm / s ) at 220 ? ° C in atmospheric-pressure He / H 2 / SiH 4 plasma excited by a 150 MHz very high-frequency (VHF) power. For this purpose Si films are prepared varying the deposition parameters such as H 2 and SiH 4 flow rates ( H 2 and SiH 4 concentrations) and VHF power density using two types of electrode (porous carbon and cylindrical rotary electrodes). In the case of using the porous carbonelectrode a ? c -Si : H film having a crystalline volume fraction of 71.9% is obtained even when hydrogen is not added to the process gas mixture ( H 2 / SiH 4 = 0 ) . In addition the films exhibit considerably low defect densities of ( 3 – 5 ) × 10 16 ? cm – 3 despite the high deposition rates. Such high-rate depositions of good-quality films are realized primarily due to the chemical and physical excitations of the film-growing surface by the atmospheric-pressure plasma while suppressing ion damage and excessive heating of the surface. On the other hand when using the cylindrical rotary electrode the phase transition from amorphous to microcrystalline occurs at around H 2 / SiH 4 = 70 . The enhancement of the film-forming reactions by the porous carbonelectrode are discussed from the viewpoint of the gas residence time in the plasma.

Hiroaki Kakiuchi; Hiromasa Ohmi; Ryohei Inudzuka; Kentaro Ouchi; Kiyoshi Yasutake

2008-01-01T23:59:59.000Z

277

Lessons from two field tests on pipeline damage detection using acceleration measurement (Invited Paper)  

E-Print Network [OSTI]

Lessons from two field tests on pipeline damage detection using acceleration measurement (Invited, Irvine, CA USA 92697-2700 ABSTRACT Early detection of pipeline damages has been highlighted in water supply industry. Water pressure change in pipeline due to a sudden rupture causes pipe to vibrate

Shinozuka, Masanobu

278

A pipeline scheduling model  

E-Print Network [OSTI]

A PIPELINE SCHEDULING MODEL A Thesis by THOMAS MELVIN BEATTY Submitted to the Graduate College of Texas AAM University in partial fulfillment of the requirement for the degree of MASTER QF SCIENCE August 1975 Major Subject: Computing... Science R PIPELINE SCHEDULING MODEL A Thesis by THOMAS MELVIN BEATTY Approved as to style and content by: Chairman of ommittee Member (Head o f Department ) Member August 1975 ABSTRACT A PIPELINE SCHEDULING MODEL (August 1975) Thomas Melvin...

Beatty, Thomas Melvin

2012-06-07T23:59:59.000Z

279

The Motion Capture Pipeline.  

E-Print Network [OSTI]

?? Motion Capture is an essential part of a world full of digital effects in movies and games. Understanding the pipelines between software is a… (more)

Holmboe, Dennis

2008-01-01T23:59:59.000Z

280

Product Pipeline Reports Tutorial  

U.S. Energy Information Administration (EIA) Indexed Site

Survey Forms> Petroleum Survey Forms Tutorial Product Pipeline Reports Tutorial Content on this page requires a newer version of Adobe Flash Player. Get Adobe Flash player...

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Characterization of Pt/SiO2 Model Catalysts at UHV and Near Atmospheric Pressures  

E-Print Network [OSTI]

catalyst samples, prepared under UHV conditions in a contiguous high pressure reactor cell surface analysis with measurements on a Pt(110) single crystal for direct com- parison. CO desorption measurements and STM measure, turnover frequency (TOF, product molecules produced/site/s) is a standard metric used for comparison

Goodman, Wayne

282

EIA - Natural Gas Pipeline Network - Interstate Pipelines Segment  

U.S. Energy Information Administration (EIA) Indexed Site

Interstate Natural Gas Pipeline Segment About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 20072008 with selected updates Interstate Natural Gas...

283

EIA - Natural Gas Pipeline Network - Largest Natural Gas Pipeline...  

U.S. Energy Information Administration (EIA) Indexed Site

Interstate Pipelines Table About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 20072008 with selected updates Thirty Largest U.S. Interstate Natural...

284

Hydrogen Pipeline Working Group Workshop: Code for Hydrogen Pipelines  

Broader source: Energy.gov [DOE]

Code for Hydrogen Piping and Pipelines. B31 Hydrogen Section Committee to develop a new code for H2 piping and pipelines.

285

EIA - Natural Gas Pipeline Network - Natural Gas Pipeline Compressor...  

Gasoline and Diesel Fuel Update (EIA)

Compressor Stations Illustration About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 20072008 with selected updates U.S. Natural Gas Pipeline...

286

Use of look-ahead modeling in pipeline operations  

SciTech Connect (OSTI)

Amoco Canada Petroleum Company, Ltd. operates the Cochin pipeline system. Cochin pumps batched liquid ethane, propane, ethylene, butane, and NGL. Operating and scheduling this pipeline is very complex. There are safety considerations, especially for ethylene, which cannot be allowed to drop below vapor pressure. Amoco Canada needs to know where batches are in the line, what pressure profiles will look like into the future, and when batches arrive at various locations along the line. In addition to traditional instrumentation and SCADA, Amoco Canada uses modeling software to help monitor and operate the Cochin pipeline. Two important components of the modeling system are the Estimated Time of Arrival (ETA) and Predictive Model (PM) modules. These modules perform look ahead modeling to assist in operating the Cochin pipeline. The modeling software was first installed for the Cochin system in February of 1994, and was commissioned on August 1, 1994. This paper will discuss how the look ahead modules are used for the Cochin pipeline.

Wray, B.; O`Leary, C.

1995-12-31T23:59:59.000Z

287

Effect of a floating electrode on an atmospheric-pressure non-thermal arc discharge  

Science Journals Connector (OSTI)

Characteristics of the atmospheric non-thermal ac arc air plasmas produced by a plasma generator with a floating electrode are investigated. The measurements show that with the help of the surface dielectric barrier discharges between the main electrodes and the floating electrode the ignition voltage of the non-thermal arc discharges can be reduced significantly and an arc discharge mode can be stabilized at high gas flow rates. The measuredtemperatures of the non-thermal arcs are at the level of 2000–3000 K under different operating conditions.

Zhi-Bin Wang; Guo-Xu Chen; Zhe Wang; Nan Ge; He-Ping Li; Cheng-Yu Bao

2011-01-01T23:59:59.000Z

288

EIA - Natural Gas Pipeline Network - Intrastate Natural Gas Pipeline  

U.S. Energy Information Administration (EIA) Indexed Site

Intrastate Natural Gas Pipeline Segment Intrastate Natural Gas Pipeline Segment About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Intrastate Natural Gas Pipeline Segment Overview Intrastate natural gas pipelines operate within State borders and link natural gas producers to local markets and to the interstate pipeline network. Approximately 29 percent of the total miles of natural gas pipeline in the U.S. are intrastate pipelines. Although an intrastate pipeline system is defined as one that operates totally within a State, an intrastate pipeline company may have operations in more than one State. As long as these operations are separate, that is, they do not physically interconnect, they are considered intrastate, and are not jurisdictional to the Federal Energy Regulatory Commission (FERC). More than 90 intrastate natural gas pipelines operate in the lower-48 States.

289

Questions and Issues on Hydrogen Pipelines: Pipeline Transmission of Hydrogen  

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

Issues on Hydrogen Issues on Hydrogen Pipelines Pipeline Transmission of Hydrogen Doe Hydrogen Pipeline Working Group Meeting August 31, 2005 Pipeline Transmission of Hydrogen --- 2 Copyright: Air Liquide Pipeline Inventory Breakdown by gases 0 500 1000 1500 2000 2500 3000 3500 KM N2 2956 km O2 3447 km H2 1736 km CO/Syngas 61 km TOTAL 8200 km Pipeline Inventory 2004 Asie Pacific America Europe Pipeline Transmission of Hydrogen --- 3 Copyright: Pipeline Transmission of Hydrogen --- 4 Copyright: 3. Special structures River Crossings (culvert): 6 (Rhein, Ruhr, Rhein-Herne-Kanal) River crossing (on bridge): 1 (Rhein-Herne-Kanal) Motorway Crossings: 26 Overground Pipelines: approx 21 km Pipeline Transmission of Hydrogen --- 5 Copyright: 5. Mining areas Pipeline Transmission of Hydrogen --- 6 Copyright: France & Netherlands

290

Natural Gas Pipeline Safety (Kansas)  

Broader source: Energy.gov [DOE]

This article states minimum safety standards for the transportation of natural gas by pipeline and reporting requirements for operators of pipelines.

291

FLUID TRANSIENTS IN A PIPELINE WITH ONE END OPEN  

SciTech Connect (OSTI)

Water hammer during multi-phase flow is rather complex, but in some cases an upper limit to the pressure surge magnitude during water hammer can be estimated. In the case considered here, a two mile long pipeline with a single high point was permitted to partially drain. Due to gravitational effects, air bubbles up through the pipe line to its highest point, but the time required for air to reach the top of the pipe is rather long. Consequently, some transients caused by valve operations are affected by air entrapment and some are not. The intent of this research was to investigate the complex interactions between air, water vapor, and liquid during water hammer in a long pipe with one end of the pipe open to atmospheric conditions. To understand the system dynamics, experimental data was obtained from a long pipeline with an open end and also from a short, transparent tube. Transient calculations were performed for valve closures and pump operations as applicable. The limitations of available calculation techniques were considered in detail.

Leishear, R

2008-06-09T23:59:59.000Z

292

FEATURE ARTICLE Pipeline Corrosion  

E-Print Network [OSTI]

F FEATURE ARTICLE Pipeline Corrosion Issues Related to Carbon Capture, Transportation, and Storage Capture, Transportation, and Storage--Aspects of Corrosion and Materials. "Until these new technologies are developed and applied, corrosion engineers are focusing on how to best design pipelines for CO2 transport

Botte, Gerardine G.

293

BP and Hydrogen Pipelines  

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

BP and Hydrogen Pipelines BP and Hydrogen Pipelines DOE Hydrogen Pipeline Working Group Workshop August 30-31, 2005 Gary P. Yoho, P.E. i l i * Green corporate philosophy and senior management commitment * Reduced greenhouse gas emissions nine years ahead of target * Alternatives to oil are a big part of BP' including natural gas, LNG, solar and hydrogen * Hydrogen Bus Project won Australia' prestigious environmental award * UK partnership opened the first hydrogen demonstration refueling station * Two hydrogen pipelines in Houston area BP Env ronmenta Comm tment s portfolio, s most BP' * li l " li i i * i l pl i i * Li l li l * " i i l i 2 i i ll i i l pl ifi i * 8" ly idl i i l s Hydrogen Pipelines Two nes, on y a brand new 12 ne s act ve Connect Houston area chem ca ant w th a ref nery nes come off a p

294

Organic pollutants abatement and biodecontamination of brewery effluents by a non-thermal quenched plasma at atmospheric pressure  

Science Journals Connector (OSTI)

A preliminary study was carried out to investigate possible decontamination of the waste waters from a Cameroonian brewery by using a non-thermal atmospheric plasma. Samples of waste waters collected during periods of intense activity of production were first analysed for organoleptic, physical–chemical and organic parameters, and then exposed to a humid air electric discharge at ambient temperature and pressure. The resultant pollution abatement and germicidal effects are both ascribed to strong oxidising effects of OH and NO radicals formed in the plasma. The BOD removal efficiency of the process with brewery industrial wastewaters under BOD concentration of 385 and 1018 mg l?1 were 74% and 98% respectively. The alkaline wastewaters are rapidly neutralised due to the pH lowering effects of the plasma treatment.

A. Doubla; S. Laminsi; S. Nzali; E. Njoyim; J. Kamsu-Kom; J.-L. Brisset

2007-01-01T23:59:59.000Z

295

Localized DLC etching by a non-thermal atmospheric-pressure helium plasma jet in ambient air  

Science Journals Connector (OSTI)

Abstract Using a versatile atmospheric-pressure helium plasma jet, diamond-like carbon (DLC) films were etched in ambient air. We observed that the DLC films are etched at a nominal rate of around 60 nm/min in the treated area (230 ?m in diameter) during a 20-min exposure. The etching rate increased after the initial 10-min exposure. During this period, the flat DLC surface was structurally modified to produce carbon nanostructures with a density of ~ 2.4 × 1011 cm? 2. With this increase in surface area, the etching rate increased. After 20 min, the DLC film had a circular pattern etched into it down to the substrate where silicon nanostructures were observed with sizes varying from 10 nm to 1 ?m. The initial carbon nanostructure formation is believed to involve selective removal of the sp2-bonded carbon domains. The carbon etching results from the formation of reactive oxygen species in the plasma.

Jun-Seok Oh; Yoshiaki Kakuta; Yuki Yasuoka; Hiroshi Furuta; Akimitsu Hatta

2014-01-01T23:59:59.000Z

296

Low refractive index silicon oxide coatings at room temperature using atmospheric-pressure very high-frequency plasma  

Science Journals Connector (OSTI)

Low refractive index silicon oxide films were deposited using atmospheric-pressure He/SiH4/CO2 plasma excited by a 150-MHz very high-frequency power. Significant increase in deposition rate at room temperature could prevent the formation of dense SiO2 network, decreasing refractive index of the resulting film effectively. As a result, a silicon oxide film with the lowest refractive index, n = 1.24 at 632.8 nm, was obtained with a very high deposition rate of 235 nm/s. The reflectance and transmittance spectra showed that the low refractive index film functioned as a quarter-wave anti-reflection coating of a glass substrate.

H. Kakiuchi; H. Ohmi; Y. Yamaguchi; K. Nakamura; K. Yasutake

2010-01-01T23:59:59.000Z

297

Discharge dynamics of pin-to-plate dielectric barrier discharge at atmospheric pressure  

SciTech Connect (OSTI)

The discharge dynamics of pin-to-plate dielectric barrier discharge was studied in atmospheric helium at 20 kHz. The discharge was predominately ignited in positive half cycle of applied voltage with sinusoidal waveform. The temporal evolution of the discharge was investigated vertically along the discharge gap and radically on the dielectric surface by time resolved imaging. It is found that a discharge column with a diameter of 2 mm was ignited above the pin electrode and expanded toward a plate electrode. On the dielectric surface with space charge accumulation, plasma disk in terms of plasma ring was formed with radius up to 25 mm. The expansion velocity of plasma ring can reach a hypersonic speed of 3.0 km/s. The ionization wave due to electron diffusion is considered to be the mechanism for plasma ring formation and dynamics.

Sun Liqun [College of Science, Donghua University, Shanghai 201620 (China); Huang, Xiaojiang [College of Science, Donghua University, Shanghai 201620 (China); Member of Magnetic Confinement Fusion Research Center, Ministry of Education of the People's Republic of China, Shanghai 201620 (China); Zhang Jie [College of Science, Donghua University, Shanghai 201620 (China); State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620 (China); Zhang Jing; Shi, J. J. [College of Science, Donghua University, Shanghai 201620 (China); State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Material Science and Engineering, Donghua University, Shanghai 201620 (China); Member of Magnetic Confinement Fusion Research Center, Ministry of Education of the People's Republic of China, Shanghai 201620 (China)

2010-11-15T23:59:59.000Z

298

Low loss hollow optical-waveguide connection from atmospheric pressure to ultra-high vacuum  

SciTech Connect (OSTI)

A technique for optically accessing ultra-high vacuum environments, via a photonic-crystal fiber with a long small hollow core, is described. The small core and the long bore enable a pressure ratio of over 10{sup 8} to be maintained between two environments, while permitting efficient and unimpeded delivery of light, including ultrashort optical pulses. This delivery can be either passive or can encompass nonlinear optical processes such as optical pulse compression, deep UV generation, supercontinuum generation, or other useful phenomena.

Ermolov, A.; Mak, K. F.; Tani, F.; Hölzer, P.; Travers, J. C. [Max Planck Institute for the Science of Light, Günther-Scharowsky-Str. 1, 91058 Erlangen (Germany)] [Max Planck Institute for the Science of Light, Günther-Scharowsky-Str. 1, 91058 Erlangen (Germany); Russell, P. St. J. [Max Planck Institute for the Science of Light, Günther-Scharowsky-Str. 1, 91058 Erlangen (Germany) [Max Planck Institute for the Science of Light, Günther-Scharowsky-Str. 1, 91058 Erlangen (Germany); Department of Physics, University of Erlangen-Nuremberg, Günther-Scharowsky-Str. 1, 91058 Erlangen (Germany)

2013-12-23T23:59:59.000Z

299

Enhancement of film-forming reactions for microcrystalline Si growth in atmospheric-pressure plasma using porous carbon electrode  

SciTech Connect (OSTI)

We have investigated the structural and electrical properties of microcrystalline silicon ({mu}c-Si:H) films deposited with high rates ({>=}5 nm/s) at 220 deg. C in atmospheric-pressure He/H{sub 2}/SiH{sub 4} plasma excited by a 150 MHz, very high-frequency (VHF) power. For this purpose, Si films are prepared varying the deposition parameters, such as H{sub 2} and SiH{sub 4} flow rates (H{sub 2} and SiH{sub 4} concentrations) and VHF power density, using two types of electrode (porous carbon and cylindrical rotary electrodes). In the case of using the porous carbon electrode, a {mu}c-Si:H film having a crystalline volume fraction of 71.9% is obtained even when hydrogen is not added to the process gas mixture (H{sub 2}/SiH{sub 4}=0). In addition, the films exhibit considerably low defect densities of (3-5)x10{sup 16} cm{sup -3} despite the high deposition rates. Such high-rate depositions of good-quality films are realized primarily due to the chemical and physical excitations of the film-growing surface by the atmospheric-pressure plasma while suppressing ion damage and excessive heating of the surface. On the other hand, when using the cylindrical rotary electrode, the phase transition from amorphous to microcrystalline occurs at around H{sub 2}/SiH{sub 4}=70. The enhancement of the film-forming reactions by the porous carbon electrode are discussed from the viewpoint of the gas residence time in the plasma.

Kakiuchi, Hiroaki; Ohmi, Hiromasa; Inudzuka, Ryohei; Ouchi, Kentaro; Yasutake, Kiyoshi [Department of Precision Science and Technology, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871 (Japan)

2008-09-01T23:59:59.000Z

300

The driving frequency effects on the atmospheric pressure corona jet plasmas from low frequency to radio frequency  

Science Journals Connector (OSTI)

Lately the atmospheric pressure jet type coronaplasma which has been typically driven by dc to low frequency (LF: several tens of kHz) is often generated by using radio frequency of 13.56 MHz. Yet the relationship between the plasma and its driving frequency has seldom been investigated. Hence in this study dependence of the atmospheric pressurecoronaplasmacharacteristics on the driving frequency was explored experimentally from LF to rf (5 kHz–13.56 MHz). The plasmas generated by the driving frequency under 2 MHz were cylindrical shape of several tens of millimeters long while the 13.56 MHz plasma is spherical and a few millimeters long. As the driving frequency was increased the plasma length became shortened. At the lower driving frequencies (below 2 MHz) the plasmas existed as positive streamer and negative glow for each half period of the applied voltage but the discharge was more continuous in time for the 13.56 MHz plasma. It was inferred from the measured I–V curves that the higher driving frequency induced higher discharge currents and the gas temperature was increased as the driving frequency was increased.

Dan Bee Kim; H. Jung; B. Gweon; S. Y. Moon; J. K. Rhee; W. Choe

2011-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Low-temperature formation of Si O 2 layers using a two-step atmospheric pressure plasma-enhanced deposition-oxidation process  

Science Journals Connector (OSTI)

Silicon oxide ( Si O 2 ) layers were fabricated at low temperatures ( ? 400 ° C ) by combining the deposition of hydrogenated amorphous Si ( a - Si : H ) with its oxidation using atmospheric pressure plasmas excited by a 150 MHz very high-frequency (VHF) power. The surface excitation by the atmospheric pressure VHF plasma was capable of reducing the temperature for the hydrogen effusion from a - Si : H . As a result a porous a - Si : H film containing a large amount of hydrogen could be transformed into a stoichiometric Si O 2 with an approximately 24% increase in oxidation rate compared with the oxidation of Si(001) at a temperature of 400 ° C .

Hiroaki Kakiuchi; Hiromasa Ohmi; Makoto Harada; Heiji Watanabe; Kiyoshi Yasutake

2007-01-01T23:59:59.000Z

302

Stratospheric and mesospheric pressure-temperature profiles from rotational analysis of CO2 lines in atmospheric trace molecule spectroscopy/ATLAS 1 infrared solar occultation spectra  

SciTech Connect (OSTI)

A simple, classical, and expedient method for the retrieval of atmospheric pressure-temperature profiles has been applied to the high-resolution infrared solar absorption spectra obtained with the atmospheric trace molecule spectroscopy (ATMOS) instrument. The basis for this method is a rotational analysis of retrieved apparent abundances from CO2 rovibrational absorption lines, employing existing constituent concentration retrieval software used in the analysis of data returned by ATMOS. Pressure-temperature profiles derived from spectra acquired during the ATLAS 1 space shuttle mission of March-April 1992 are quantitatively evaluated and compared with climatological and meteorological data as a means of assessing the validity of this approach.

Stiller, G.P.; Gunson, M.R.; Lowes, L.L.; Abrams, M.C.; Raper, O.F.; Farmer, C.B.; Zander, R.; Rinsland, C.P. [Kernforschungszentrum Karlsruhe, Karlsruhe (Germany)] [Kernforschungszentrum Karlsruhe, Karlsruhe (Germany); [Jet Propulsion Lab., California Inst. of Tech., Pasadena, CA (United States); [Liege Univ., Liege (Belgium); [NASA, Langley Research Center, Hampton, VA (United States)

1995-02-01T23:59:59.000Z

303

BP and Hydrogen Pipelines DOE Hydrogen Pipeline Working Group Workshop  

E-Print Network [OSTI]

BP and Hydrogen Pipelines DOE Hydrogen Pipeline Working Group Workshop August 30-31, 2005 Gary P · UK partnership opened the first hydrogen demonstration refueling station · Two hydrogen pipelines l · " i i l i 2 i i ll i i l pl ifi i · 8" ly idl i i l s Hydrogen Pipelines Two nes, on y a brand

304

EIA - Natural Gas Pipeline Network - Pipeline Capacity and Utilization  

U.S. Energy Information Administration (EIA) Indexed Site

Pipeline Utilization & Capacity Pipeline Utilization & Capacity About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Natural Gas Pipeline Capacity & Utilization Overview | Utilization Rates | Integration of Storage | Varying Rates of Utilization | Measures of Utilization Overview of Pipeline Utilization Natural gas pipeline companies prefer to operate their systems as close to full capacity as possible to maximize their revenues. However, the average utilization rate (flow relative to design capacity) of a natural gas pipeline system seldom reaches 100%. Factors that contribute to outages include: Scheduled or unscheduled maintenance Temporary decreases in market demand Weather-related limitations to operations

305

PRESSURE ACTIVATED SEALANT TECHNOLOGY  

SciTech Connect (OSTI)

The objective of this project is to develop new, efficient, cost effective methods of internally sealing natural gas pipeline leaks through the application of differential pressure activated sealants. In researching the current state of the art for gas pipeline sealing technologies we concluded that if the project was successful, it appeared that pressure activated sealant technology would provide a cost effective alternative to existing pipeline repair technology. From our analysis of current field data for a 13 year period from 1985 to 1997 we were able to identify 205 leaks that were candidates for pressure activated sealant technology, affirming that pressure activated sealant technology is a viable option to traditional external leak repairs. The data collected included types of defects, areas of defects, pipe sizes and materials, incident and operating pressures, ability of pipeline to be pigged and corrosion states. This data, and subsequent analysis, was utilized as a basis for constructing applicable sealant test modeling.

Michael A. Romano

2004-04-01T23:59:59.000Z

306

Composites Technology for Hydrogen Pipelines  

Broader source: Energy.gov [DOE]

Investigate application of composite, fiber-reinforced polymer pipeline technology for hydrogen transmission and distribution

307

INTERNAL REPAIR OF PIPELINES  

SciTech Connect (OSTI)

The two broad categories of deposited weld metal repair and fiber-reinforced composite repair technologies were reviewed for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Preliminary test programs were developed for both deposited weld metal repairs and for fiber-reinforced composite repair. To date, all of the experimental work pertaining to the evaluation of potential repair methods has focused on fiber-reinforced composite repairs. Hydrostatic testing was also conducted on four pipeline sections with simulated corrosion damage: two with composite liners and two without.

Robin Gordon; Bill Bruce; Nancy Porter; Mike Sullivan; Chris Neary

2003-05-01T23:59:59.000Z

308

Application of composite repair for pipeline anomalies  

SciTech Connect (OSTI)

The cost of maintaining the structural integrity of the 650,000 kilometer high-pressure gas gathering and transmission pipeline network is a significant part of the operating budget of the US pipeline industry. To help in controlling thee costs, the Gas Research institute (GRI) has supported research resulting in the development of Clock Spring{reg_sign}, a low-cost fiberglass composite alternative to conventional steel sleeves for transmission line pipe reinforcement and repair. Investigation and development of engineering guidelines have been completed. Field validation of laboratory research on application of Clock Spring as a repair for corrosion and mechanical damage defects is in progress. This paper presents an overview of composite repair technology for pipeline corrosion and mechanical damage defects. It summarizes the results and conclusions of modeling and experiments on reinforcement and repair of both corrosion and mechanical damage (i.e., dent and gouge) pipeline defects. These investigations provide quantitative results on the operating envelope of composite reinforcements and installation requirements that ensure sound and reliable repair of pipeline defects. The paper further summarizes the work to date on field installation in verification of composite repair performance.

Stephens, D.R. [Battelle, Columbus, OH (United States); Lindholm, U.S. [Southwest Research Inst., San Antonio, TX (United States); Hill, V.L. [Gas Research Inst., Chicago, IL (United States); Block, N. [Clock Spring Co., Houston, TX (United States)

1996-09-01T23:59:59.000Z

309

Tefken builds Turkish pipeline project  

SciTech Connect (OSTI)

A turnkey contract was let in early 1983 for the construction of the Yumurtalik-Kirikkale crude oil pipeline system in Turkey. The design and construction of the 277 mile, 24 in dia pipeline will be completed toward the end of 1985. The pipeline will transport crude oil to the Central Anatolian Refinery. In the original design, the pipeline was planned for an ultimate capacity of 10 million tons/year with three pumping stations. Problems encountered in constructing the pipeline are discussed.

Not Available

1984-08-01T23:59:59.000Z

310

Pipelines in the constructed environment  

SciTech Connect (OSTI)

New pipeline construction, the maintenance of existing pipelines, and the rehabilitation or replacement of deteriorating pipelines often takes place with many challenges and constraints imposed by developmental regulations. The 1998 Pipeline Division Conference provided a forum for those involved in the field to share ideas and learn more about the issues faced today. These 92 peer-reviewed papers reflect the current methods and technology in the field of pipeline construction.

Castronovo, J.P.; Clark, J.A. [eds.

1998-07-01T23:59:59.000Z

311

Plasma-Assisted Synthesis of TiO2 Nanorods by Gliding Arc Discharge Processing at Atmospheric Pressure for Photocatalytic Applications  

Science Journals Connector (OSTI)

The present study explores a new method of synthesis of TiO2 nano-particles in an aqueous medium from TiCl3 precursor by non-thermal plasma in humid air as feeding gas obtained at atmospheric pressure. The precur...

E. Acayanka; A. Tiya Djowe; S. Laminsi…

2013-08-01T23:59:59.000Z

312

Hydrogen Pipeline Discussion  

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

praxair.com praxair.com Copyright © 2003, Praxair Technology, Inc. All rights reserved. Hydrogen Pipeline Discussion BY Robert Zawierucha, Kang Xu and Gary Koeppel PRAXAIR TECHNOLOGY CENTER TONAWANDA, NEW YORK DOE Hydrogen Pipeline Workshop Augusta, GA August 2005 2 Introduction Regulatory and technical groups that impact hydrogen and hydrogen systems ASME, DOE, DOT etc, Compressed Gas Association activities ASTM TG G1.06.08 Hydrogen pipelines and CGA-5.6 Selected experience and guidance Summary and recommendations 3 CGA Publications Pertinent to Hydrogen G-5: Hydrogen G-5.3: Commodity Specification for Hydrogen G-5.4: Standard for Hydrogen Piping at Consumer Locations G-5.5: Hydrogen Vent Systems G-5.6: Hydrogen Pipeline Systems (IGC Doc 121/04/E) G-5.7: Carbon Monoxide and Syngas

313

Gas Pipelines (Texas)  

Broader source: Energy.gov [DOE]

This chapter applies to any entity that owns, manages, operates, leases, or controls a pipeline for the purpose of transporting natural gas in the state for sale or compensation, as well as any...

314

Chapter 9 - Pipeline Insulation  

Science Journals Connector (OSTI)

Oilfield pipelines are insulated mainly to conserve heat. The need to keep the product in the pipeline at a temperature higher than the ambient could exist for the following reasons: preventing the formation of gas hydrates, preventing the formation of wax or asphaltenes, enhancing the product flow properties, increasing the cooldown time after shutting down, and meeting other operational/process equipment requirements. On the other hand, in liquefied gas pipelines, such as LNG, insulation is required to maintain the cold temperature of the gas to keep it in a liquid state. This chapter describes the commonly used insulation materials, insulation finish on pipes, and general requirements for insulation of offshore and deepwater pipelines.

Boyun Guo; Shanhong Song; Ali Ghalambor; Tian Ran Lin

2014-01-01T23:59:59.000Z

315

Gas Pipeline Securities (Indiana)  

Broader source: Energy.gov [DOE]

This statute establishes that entities engaged in the transmission of gas by pipelines are not required to obtain the consent of the Utility Regulatory Commission for issuance of stocks,...

316

Historical pipeline construction cost analysis  

Science Journals Connector (OSTI)

This study aims to provide a reference for the pipeline construction cost, by analysing individual pipeline cost components with historical pipeline cost data. Cost data of 412 pipelines recorded between 1992 and 2008 in the Oil and Gas Journal are collected and adjusted to 2008 dollars with the chemical engineering plant cost index (CEPCI). The distribution and share of these 412 pipeline cost components are assessed based on pipeline diameter, pipeline length, pipeline capacity, the year of completion, locations of pipelines. The share of material and labour cost dominates the pipeline construction cost, which is about 71% of the total cost. In addition, the learning curve analysis is conducted to attain learning rate with respect to pipeline material and labour costs for different groups. Results show that learning rate and construction cost are varied by pipeline diameters, pipeline lengths, locations of pipelines and other factors. This study also investigates the causes of pipeline construction cost differences among different groups. [Received: October 13, 2010; Accepted: December 20, 2010

Zhenhua Rui; Paul A. Metz; Doug B. Reynolds; Gang Chen; Xiyu Zhou

2011-01-01T23:59:59.000Z

317

Total Crude by Pipeline  

U.S. Energy Information Administration (EIA) Indexed Site

Product: Total Crude by All Transport Methods Domestic Crude by All Transport Methods Foreign Crude by All Transport Methods Total Crude by Pipeline Domestic Crude by Pipeline Foreign Crude by Pipeline Total Crude by Tanker Domestic Crude by Tanker Foreign Crude by Tanker Total Crude by Barge Domestic Crude by Barge Foreign Crude by Barge Total Crude by Tank Cars (Rail) Domestic Crude by Tank Cars (Rail) Foreign Crude by Tank Cars (Rail) Total Crude by Trucks Domestic Crude by Trucks Foreign Crude by Trucks Period: Product: Total Crude by All Transport Methods Domestic Crude by All Transport Methods Foreign Crude by All Transport Methods Total Crude by Pipeline Domestic Crude by Pipeline Foreign Crude by Pipeline Total Crude by Tanker Domestic Crude by Tanker Foreign Crude by Tanker Total Crude by Barge Domestic Crude by Barge Foreign Crude by Barge Total Crude by Tank Cars (Rail) Domestic Crude by Tank Cars (Rail) Foreign Crude by Tank Cars (Rail) Total Crude by Trucks Domestic Crude by Trucks Foreign Crude by Trucks Period: Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes Show Data By: Product Area 2007 2008 2009 2010 2011 2012 View

318

DOE Hydrogen Pipeline Working Group Workshop  

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

Pipeline Working Group Workshop August 31, 2005 Augusta, Georgia Hydrogen Pipeline Experience Presented By: LeRoy H. Remp Lead Project Manager Pipeline Projects ppt00 3 Hydrogen...

319

Numerical studies on global buckling of subsea pipelines  

Science Journals Connector (OSTI)

Abstract Subsea pipelines buckle globally because of their movement relative to surrounding soil. Global buckling is often triggered by high operational temperature of the oil in pipelines, initial imperfections in the pipeline, and/or a combination of both. Pipeline global buckling is a failure mode that must be considered in the design and in-service assessment of submarine pipelines because it can jeopardize the structural integrity of the pipelines. Global buckling is increasingly difficult to control as temperature and pressure increase. Therefore, location prediction and buckling control are critical to pipeline design. Finite element analysis (FEA) is often used to analyze the behavior of pipelines subject to extreme pressures and temperatures. Four numerical simulation methods based on the finite element method (FEM) program ABAQUS, i.e., the 2D implicit, 2D explicit, 3D implicit, and 3D explicit methods, are used to simulate pipeline global buckling under different temperatures. The analysis results of the four typical methods were then compared with classical analytical solutions. The comparison indicates that the results obtained using the 2D implicit and 2D explicit methods are similar and the results obtained using the 2D implicit method are closer to those obtained using traditional analytical solutions. The analysis shows that the results of the 3D implicit and 3D explicit methods are similar, but the results obtained using the 3D methods are significantly different from those obtained using the analytical solution. A novel method to introduce initial pipeline imperfections into the FEA model in global buckling analysis is also presented in this paper.

Run Liu; Hao Xiong; Xinli Wu; Shuwang Yan

2014-01-01T23:59:59.000Z

320

The effects of non-thermal atmospheric pressure plasma jet on cellular activity at SLA-treated titanium surfaces  

Science Journals Connector (OSTI)

Titanium (Ti) is a primary material used for dental implants, and the sandblasted, large-grit, and acid-etched (SLA) surface treatment is commonly used on titanium to promote early osseointegration. Despite their benefits, SLA-treated Ti surfaces are disadvantaged by their hydrophobic property, and much research has been performed to address this problem. In current study, we hypothesized the effects of a nitrogen-based non-thermal atmospheric pressure plasma jet (NTAPPJ) treatment on SLA-treated Ti would increase hydrophilicity and cellular activity. Samples with and without the NTAPPJ treatment were analyzed using a field emission scanning electron microscope, optical surface roughness system, X-ray photoelectron spectroscope, and water contact angle measuring system. MC3T3-E1 cells (murine osteoblastic cell line) attachments and proliferations were examined by the MTT and BrdU colorimetry assay. Cell immunofluorescent microscopic images were observed by a confocal laser scanning microscope for a morphological analysis. This study found that the nitrogen-based NTAPPJ treatment on SLA-treated Ti significantly increased the hydrophilicity and MC3T3-E1 cell attachments and proliferations. Hence, it was concluded that an additional procedure of nitrogen-based NTAPPJ treatment just prior to implantation of SLA-treated Ti into oral defect sites could improve the success of dental implant surgery.

Eun-Jung Lee; Jae-Sung Kwon; Soo-Hyuk Uhm; Doo-Hoon Song; Yong Hee Kim; Eun Ha Choi; Kyoung-Nam Kim

2013-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Influence of non-thermal atmospheric pressure plasma on cellular structures and processes in human keratinocytes (HaCaT)  

Science Journals Connector (OSTI)

Background The use of non-thermal atmospheric pressure plasma in dermatology to improve the healing of chronic wounds is a promising application. The antimicrobial properties of physical plasma offer on the one hand the killing of bacteria, which are often a problem in chronic wounds. On the other hand, plasma can activate cells which are involved in the wound closure. Objective To guarantee a safe application it is essential to understand basic interactions between physical plasma and human skin cells. Methods In our study, human keratinocytes (HaCaT cells) were directly plasma treated with a dielectric barrier discharge (DBD) plasma source and effects on viability, DNA, cell cycle, intracellular concentration of reactive oxygen species and induction of apoptosis were observed. Results A treatment time-dependent loss of recovered adherent HaCaT cells after 24 h and a linear increase of DNA damage were observed, which was no longer evident 24 h after plasma stimulation, except for long treatment times. An accumulation of HaCaT cells in G2/M phase and a decrease in the G1 phase was caused by DBD plasma. The increasing formation of intracellular ROS is also attributed to plasma treatment. In contrast to other studies we did not find clear evidences for apoptosis in adherent HaCaT cells. A culture medium exchange subsequently after plasma treatment weakened the observed effects. Conclusion DBD plasma treatment resulted in oxidative stress in human keratinocytes which is related to deficient cell performance.

Susanne Blackert; Beate Haertel; Kristian Wende; Thomas von Woedtke; Ulrike Lindequist

2013-01-01T23:59:59.000Z

322

Characteristics of atmospheric-pressure non-thermal N2 and N2/O2 gas mixture plasma jet  

Science Journals Connector (OSTI)

An atmospheric-pressure non-thermal plasma jet driven by high frequency alternating current and operating on N2 and N2/O2 gas mixture is investigated. The plasma jet can reach 55?mm in length at a gas flow rate of 2500?l/h. The gas temperature at a distance of 4?mm from the nozzle is close to room temperature. Optical emission spectroscopy is employed to investigate the important plasma parameters such as the excited species rotational temperature vibrational temperature and excitation temperature under different discharge conditions. The results show that the plasma source operates under non-equilibrium conditions. The absolute irradiance intensity of the vibrational band N2(C-B) in the active region is measured. Taking into account the irradiance intensity of N2(C-B 0-0) and N2(B-X 0-0) as well as measured current the electron density which is determined by considering direct and step-wise electron impact excitation of nitrogen emission reaches a maximum value of 5.6?×?1020/m3.

Dezhi Xiao; Cheng Cheng; Jie Shen; Yan Lan; Hongbing Xie; Xingsheng Shu; Jiangang Li; Paul K. Chu

2014-01-01T23:59:59.000Z

323

Localized etching of an insulator film coated on a copper wire using an atmospheric-pressure microplasma jet  

SciTech Connect (OSTI)

Atmospheric-pressure microplasma jets (AP{mu}PJs) of Ar and Ar/O{sub 2} gases were generated from the tip of a stainless steel surgical needle having outer and inner diameters of 0.4 and 0.2 mm, respectively, with a rf excitation of 13.56 MHz. The steel needle functions both as a powered electrode and a gas nozzle. The operating power is 1.2-6 W and the corresponding peak-to-peak voltage Vp.p. is about 1.5 kV. The AP{mu}PJ was applied to the localized etching of a polyamide-imide insulator film (thickness of 10 {mu}m) of a copper winding wire of 90 {mu}m diameter. The insulator film around the copper wire was completely removed by the irradiated plasma from a certain direction without fusing the wire. The removal time under the Ar AP{mu}PJ irradiation was only 3 s at a rf power of 4 W. Fluorescence microscopy and scanning electron microscope images reveal that good selectivity of the insulator film to the copper wire was achieved. In the case of Ar/O{sub 2} AP{mu}PJ irradiation with an O{sub 2} concentration of 10% or more, the removed copper surface was converted to copper monoxide CuO.

Yoshiki, Hiroyuki [Tsuruoka National College of Technology, Inooka-Sawada 104, Tsuruoka, Yamagata 997-8511 (Japan)

2007-04-15T23:59:59.000Z

324

Preparation of Ti O 2 thin films on the inner surface of a quartz tube using atmospheric-pressure microplasma  

Science Journals Connector (OSTI)

Titanium dioxide ( Ti O 2 ) thin films were prepared on the inner surface of a quartz tube with inner and outer diameters of 1 and 3 mm respectively using plasma-enhanced chemical vapor deposition with titanium tetraisopropoxide and oxygen ( O 2 ) as reactants and helium as the carrier gas at atmospheric pressure. A microplasma was generated inside the tube by rf ( 13.56 MHz ) excitation using externally attached parallel-plate electrodes. The characteristics of the depositedfilms were examined by scanning electron microscopy x-ray photoelectron spectroscopy and x-ray diffraction. A typical as-deposited film had an amorphous structure with a smooth surface and was transparent. With increasing O 2 concentration in the plasma gas phase the depositedfilmsurface was covered with a large number of Ti O 2 nanoparticles. However the depositedfilms were a mixture of Ti O 2 and amorphous carbon and showed rough surface in the absence of O 2 in the source gas. The effects of the O 2 concentration in the plasma gas on the characteristics of the deposited Ti O 2 films are discussed on the basis of the analysis of the gas species generated in the plasma using optical emission spectroscopy.

Hiroyuki Yoshiki; Taku Saito

2008-01-01T23:59:59.000Z

325

Influence of Penning effect on the plasma features in a non-equilibrium atmospheric pressure plasma jet  

SciTech Connect (OSTI)

Non-equilibrium atmospheric pressure plasma jet (APPJ) is a cold plasma source that promises various innovative applications. The influence of Penning effect on the formation, propagation, and other physical properties of the plasma bullets in APPJ remains a debatable topic. By using a 10?cm wide active electrode and a frequency of applied voltage down to 0.5?Hz, the Penning effect caused by preceding discharges can be excluded. It was found that the Penning effect originating in a preceding discharge helps build a conductive channel in the gas flow and provide seed electrons, thus the discharge can be maintained at a low voltage which in turn leads to a smaller propagation speed for the plasma bullet. Photographs from an intensified charge coupled device reveal that the annular structure of the plasma plume for He is irrelevant to the Penning ionization process arising from preceding discharges. By adding NH{sub 3} into Ar to introduce Penning effect, the originally filamentous discharge of Ar can display a rather extensive plasma plume in ambient as He. These results are helpful for the understanding of the behaviors of non-equilibrium APPJs generated under distinct conditions and for the design of plasma jet features, especially the spatial distribution and propagation speed, which are essential for application.

Chang, Zhengshi; Zhang, Guanjun [School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049 (China); Jiang, Nan; Cao, Zexian, E-mail: zxcao@iphy.ac.cn [Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

2014-03-14T23:59:59.000Z

326

A dominant role of oxygen additive on cold atmospheric-pressure He + O{sub 2} plasmas  

SciTech Connect (OSTI)

We present in this paper how oxygen additive impacts on the cold atmospheric-pressure helium plasmas by means of a one-dimensional fluid model. For the oxygen concentration [O{sub 2}]?>??0.1%, the influence of oxygen on the electron characteristics and the power dissipation becomes important, e.g., the electron density, the electron temperature in sheath, the electron-coupling power, and the sheath width decreasing by 1.6 to 16 folds with a two-log increase in [O{sub 2}] from 0.1% to 10%. Also the discharge mode evolves from the ? mode to the ? mode. The reactive oxygen species are found to peak in the narrow range of [O{sub 2}]?=?0.4%–0.9% in the plasmas, similar to their power-coupling values. This applies to their wall fluxes except for those of O* and O{sub 2}{sup ?}. These two species have very short lifetimes, thus only when generated in boundary layers within several micrometers next to the electrode can contribute to the fluxes. The dominant reactive oxygen species and the corresponding main reactions are schematically presented, and their relations are quantified for selected applications.

Yang, Aijun; Liu, Dingxin, E-mail: liudingxin@gmail.com, E-mail: xhw@mail.xjtu.edu.cn; Rong, Mingzhe; Wang, Xiaohua, E-mail: liudingxin@gmail.com, E-mail: xhw@mail.xjtu.edu.cn [Centre for Plasma Biomedicine, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049 (China); Kong, Michael G. [Centre for Plasma Biomedicine, State Key Laboratory of Electrical Insulation and Power Equipment, Xi'an Jiaotong University, Xi'an 710049 (China); Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, Virginia 23508 (United States); Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, Virginia 23529 (United States)

2014-08-15T23:59:59.000Z

327

A study of production of {alpha}-form plaster from FGD sludge in an aqueous solution at atmospheric pressure  

SciTech Connect (OSTI)

A process for directly converting FGD sludge solid into {alpha}-form plaster in an aqueous solution at atmospheric pressure with simultaneous collection of SO{sub 2} evolved has been studied. The reactant suspension comprises FGD sludge solid in a ratio of solid to liquid from 1:1.25 to 1:10, sulfuric acid from 5% to 30%, alkali earth metal chloride salts no more than 8% which serves as the catalyst for crystallization. Experiments are proceeded in pH values from acidic range to near neutral range in a temperature range from 80 C to the near boiling point of suspension. It has been found that the concentrations of acid in liquid and the reaction temperature are the most sensitive factors to the rate of dehydration of FGD gypsum. Increasing the ratio of solid to liquid is disadvantageous for growth of crystals even though it does not effect obviously on the rate of dehydration of FGD gypsum. Addition of glycerol less than 3% plays a role in stabilizing {alpha}-form calcium sulfate hemihydrate crystals occurring in solution long enough so that crystals grow big. On the other hand, the pH range is the most important to modify crystal habit in presence of succinic acid. The more closed to the neutral range of pH value the liquid is adjusted, the better stability of the crystals appears, the more favorable for producing big squat crystals in high quality the process is believed.

Tong, S. [Wuhan Yejin Univ. of Technology and Science, Wuhan, Hubei (China). Dept.of Chemical Engineering; Kirk, D. [Univ. of Toronto, Ontario (Canada). Dept. of Chemical Engineering

1996-12-31T23:59:59.000Z

328

Thermodynamic and economic analysis of polygeneration system integrating atmospheric pressure coal pyrolysis technology with circulating fluidized bed power plant  

Science Journals Connector (OSTI)

Abstract Lignite-based polygeneration system has been considered as a feasible technology to realize clean and efficient utilization of coal resources. A newly polygeneration system has been proposed, featuring the combination of a 2 × 300 MW circulating fluidized bed (CFB) power plant and atmospheric pressure fluidized bed pyrolyzers. Xiaolongtan lignite is pyrolyzed in pyrolyzers. Pyrolyzed volatiles are further utilized for the co-generation of methanol, oil, and electricity, while char residues are fired in CFB boilers to maintain the full load condition of boilers. Detailed system models were built, and the optimum operation parameters of the polygeneration plant were sought. Technical and economic performances of optimum design of the polygeneration plant were analyzed and compared with those of the conventional CFB power plant based on the evaluation of energy and exergy efficiency, internal rate of return (IRR), and payback period. Results revealed that system efficiency and the IRR of the polygeneration plant are ca. 9% and 14% points higher than those of the power plant, respectively. The study also analyzed the effects of market fluctuations on the economic condition of the polygeneration plant, and found that prices of fuel, material, and products have great impacts on the economic characteristics of the polygeneration plant. Polygeneration plant is more economic than CFB power plant even when prices fluctuate within a wide range. This paper provides a thorough evaluation of the polygeneration plant, and the study indicates that the proposed polygeneration plant has a bright prospect.

Zhihang Guo; Qinhui Wang; Mengxiang Fang; Zhongyang Luo; Kefa Cen

2014-01-01T23:59:59.000Z

329

Ambient Temperature Hydrocarbon Selective Catalytic Reduction of NOx Using Atmospheric Pressure Nonthermal Plasma Activation of a Ag/Al2O3 Catalyst  

Science Journals Connector (OSTI)

Ambient Temperature Hydrocarbon Selective Catalytic Reduction of NOx Using Atmospheric Pressure Nonthermal Plasma Activation of a Ag/Al2O3 Catalyst ... This low temperature activity provides the basis for applying nonthermal plasmas to activate emission control catalysts during cold start conditions, which remains an important issue for mobile and stationary applications. ... (14, 15) Therefore, the combination of heterogeneous catalysis with plasmas has attracted interest due to the combined possible advantages of having a fast and low-temperature reaction from atmospheric nonthermal plasma and high product selectivity from heterogeneous catalysis. ...

Cristina E. Stere; Wameedh Adress; Robbie Burch; Sarayute Chansai; Alexandre Goguet; William G. Graham; Fabio De Rosa; Vincenzo Palma; Christopher Hardacre

2014-01-10T23:59:59.000Z

330

Department of Transportation Pipeline and Hazardous Materials...  

Office of Environmental Management (EM)

Department of Transportation Pipeline and Hazardous Materials Safety Administration Activities Department of Transportation Pipeline and Hazardous Materials Safety Administration...

331

Hydrogen Delivery Technologies and Systems - Pipeline Transmission...  

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

Hydrogen Delivery Technologies and Systems - Pipeline Transmission of Hydrogen Hydrogen Delivery Technologies and Systems - Pipeline Transmission of Hydrogen Hydrogen Delivery...

332

Pipeline safety joint eliminates need for divers  

SciTech Connect (OSTI)

The Sea-Hook coupling is a diverless pressure-compensated pipeline safety joint designed to protect the pipe from damage by excessive physical loads. The coupling provides a predetermined weak point in the line that will cause a controlled separation when the line is exposed to strong wave action or dragging anchors. Moreover, it offers prepressurized remote lockout protection, metal seal integrity, no hand-up separation, enclosed bolting, optimal manual lockout, and no springs or shear rings.

Not Available

1983-04-01T23:59:59.000Z

333

A Low-Cost Natural Gas/Freshwater Aerial Pipeline  

E-Print Network [OSTI]

Offered is a new type of low-cost aerial pipeline for delivery of natural gas, an important industrial and residential fuel, and freshwater as well as other payloads over long distances. The offered pipeline dramatically decreases the construction and operation costs and the time necessary for pipeline construction. A dual-use type of freight pipeline can improve an arid rural environment landscape and provide a reliable energy supply for cities. Our aerial pipeline is a large, self-lofting flexible tube disposed at high altitude. Presently, the term "natural gas" lacks a precise technical definition, but the main components of natural gas are methane, which has a specific weight less than air. A lift force of one cubic meter of methane equals approximately 0.5 kg. The lightweight film flexible pipeline can be located in the Earth-atmosphere at high altitude and poses no threat to airplanes or the local environment. The authors also suggest using lift force of this pipeline in tandem with wing devices for cheap shipment of a various payloads (oil, coal and water) over long distances. The article contains a computed macroproject in northwest China for delivery of 24 billion cubic meter of gas and 23 millions tonnes of water annually.

Alexander Bolonkin; Richard Cathcart

2007-01-05T23:59:59.000Z

334

A Low-Cost Natural Gas/Freshwater Aerial Pipeline  

E-Print Network [OSTI]

Offered is a new type of low-cost aerial pipeline for delivery of natural gas, an important industrial and residential fuel, and freshwater as well as other payloads over long distances. The offered pipeline dramatically decreases the construction and operation costs and the time necessary for pipeline construction. A dual-use type of freight pipeline can improve an arid rural environment landscape and provide a reliable energy supply for cities. Our aerial pipeline is a large, self-lofting flexible tube disposed at high altitude. Presently, the term "natural gas" lacks a precise technical definition, but the main components of natural gas are methane, which has a specific weight less than air. A lift force of one cubic meter of methane equals approximately 0.5 kg. The lightweight film flexible pipeline can be located in the Earth-atmosphere at high altitude and poses no threat to airplanes or the local environment. The authors also suggest using lift force of this pipeline in tandem with wing devices for che...

Bolonkin, A; Bolonkin, Alexander; Cathcart, Richard

2007-01-01T23:59:59.000Z

335

Symmetric and anti-symmetric buckle propagation modes in subsea corroded pipelines  

Science Journals Connector (OSTI)

Solutions for the steady-state buckle propagation modes and pressures in a corroded pipeline subjected to external hydrostatic pressure are presented. The buckle propagation pressure of a corroded pipeline is obtained analytically with a rigid-plastic analysis and numerically from finite element analysis (ABAQUS). Both the rigid-plastic analysis and ABAQUS program reveal symmetric and anti-symmetric buckling modes, depending on the depth and angular extent of the corrosion. Snap-through and global buckling of the pipeline are also distinguished in both solutions. The rigid-plastic solutions for buckle propagation pressure and corresponding collapse modes are found to be within 15% with numerical solutions.

Jianghong Xue; Michelle S. Hoo Fatt

2005-01-01T23:59:59.000Z

336

ARM - Atmospheric Pressure  

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

be removed from the source of heat with heavy gloves and the cap refitted to make the seal again. Without paying special attention to the heated can, the lecture should...

337

New Materials for Hydrogen Pipelines  

Broader source: Energy.gov [DOE]

Barriers to Hydrogen Delivery: Existing steel pipelines are subject to hydrogen embrittlement and are inadequate for widespread H2 distribution.

338

Evaluation of bone response to synthetic bone grafting material treated with argon-based atmospheric pressure plasma  

Science Journals Connector (OSTI)

Abstract Bone graft materials are utilized to stimulate healing of bone defects or enhance osseointegration of implants. In order to augment these capabilities, various surface modification techniques, including atmospheric pressure plasma (APP) surface treatment, have been developed. This in vivo study sought to assess the effect of APP surface treatment on degradation and osseointegration of Synthograft™, a beta-tricalcium phosphate (?-TCP) synthetic bone graft. The experimental (APP-treated) grafts were subjected to APP treatment with argon for a period of 60 s. Physicochemical characterization was performed by environmental scanning electron microscopy, surface energy (SE), and x-ray photoelectron spectroscopy analyses both before and after APP treatment. Two APP-treated and two untreated grafts were surgically implanted into four critical-size calvarial defects in each of ten New Zealand white rabbits. The defect samples were explanted after four weeks, underwent histological analysis, and the percentages of bone, soft tissue, and remaining graft material were quantified by image thresholding. Material characterization showed no differences in particle surface morphology and that the APP-treated group presented significantly higher SE along with higher amounts of the base material chemical elements on it surface. Review of defect composition showed that APP treatment did not increase bone formation or reduce the amount of soft tissue filling the defect when compared to untreated material. Histologic cross-sections demonstrated osteoblastic cell lines, osteoid deposition, and neovascularization in both groups. Ultimately, argon-based APP treatment did not enhance the osseointegration or degradation of the ?-TCP graft. Future investigations should evaluate the utility of gases other than argon to enhance osseointegration through APP treatment.

Bryan G. Beutel; Natalie R. Danna; Riddhi Gangolli; Rodrigo Granato; Lakshmiprada Manne; Nick Tovar; Paulo G. Coelho

2014-01-01T23:59:59.000Z

339

Low-temperature formation of SiO{sub 2} layers using a two-step atmospheric pressure plasma-enhanced deposition-oxidation process  

SciTech Connect (OSTI)

Silicon oxide (SiO{sub 2}) layers were fabricated at low temperatures ({<=}400 deg. C) by combining the deposition of hydrogenated amorphous Si (a-Si:H) with its oxidation using atmospheric pressure plasmas excited by a 150 MHz very high-frequency (VHF) power. The surface excitation by the atmospheric pressure VHF plasma was capable of reducing the temperature for the hydrogen effusion from a-Si:H. As a result, a porous a-Si:H film containing a large amount of hydrogen could be transformed into a stoichiometric SiO{sub 2} with an approximately 24% increase in oxidation rate compared with the oxidation of Si(001) at a temperature of 400 deg. C.

Kakiuchi, Hiroaki; Ohmi, Hiromasa; Harada, Makoto; Watanabe, Heiji; Yasutake, Kiyoshi [Department of Precision Science and Technology, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871 (Japan)

2007-10-15T23:59:59.000Z

340

The quenching effect of hydrogen on the nitrogen in metastable state in atmospheric-pressure N{sub 2}-H{sub 2} microwave plasma torch  

SciTech Connect (OSTI)

The atmospheric-pressure microwave N{sub 2}-H{sub 2} plasma torch is generated and diagnosed by optical emission spectroscopy. It is found that a large amount of N atoms and NH radicals are generated in the plasma torch and the emission intensity of N{sub 2}{sup +} first negative band is the strongest over the spectra. The mixture of hydrogen in nitrogen plasma torch causes the morphology of the plasma discharge to change with appearance that the afterglow shrinks greatly and the emission intensity of N{sub 2}{sup +} first negative band decreases with more hydrogen mixed into nitrogen plasma. In atmospheric-pressure microwave-induced plasma torch, the hydrogen imposes a great influence on the characteristics of nitrogen plasma through the quenching effect of the hydrogen on the metastable state of N{sub 2}.

Li, Shou-Zhe, E-mail: lisz@dlut.edu.cn; Zhang, Xin; Chen, Chuan-Jie; Zhang, Jialiang [Key Laboratory of Materials Modification by Laser, Ion, Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024 (China); School of Physics and Optoelectronic Technology, Dalian 116024 (China); Wang, Yong-Xing [College of Electrical Engineering, Dalian 116024 (China); Xia, Guang-Qing [School of Aeronautics and Astronautics, Dalian University of Technology, Dalian 116024 (China)

2014-07-15T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Materials Requirements for Pipeline Construction  

Science Journals Connector (OSTI)

...the same time, pipeline failure must be...the huge cost of repair. The first oil...where the initial pipeline construction cost...cost of a single repair can exceed C1M. TABLE 2. NORTH SEA PIPELINES grade max. water...

1976-01-01T23:59:59.000Z

342

Abstract Atmospheric CO2 partial pressure (pCO2) was as low as 18 Pa during the Pleistocene and is projected to  

E-Print Network [OSTI]

Abstract Atmospheric CO2 partial pressure (pCO2) was as low as 18 Pa during the Pleistocene and is projected to increase from 36 to 70 Pa CO2 before the end of the 21st century. High pCO2 often increases the growth and repro- duction of C3 annuals, whereas low pCO2 decreases growth and may reduce or prevent

Antonovics, Janis

343

EIA - Natural Gas Pipeline Network - Largest Natural Gas Pipeline Systems  

U.S. Energy Information Administration (EIA) Indexed Site

Interstate Pipelines Table Interstate Pipelines Table About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Thirty Largest U.S. Interstate Natural Gas Pipeline Systems, 2008 (Ranked by system capacity) Pipeline Name Market Regions Served Primary Supply Regions States in Which Pipeline Operates Transported in 2007 (million dekatherm)1 System Capacity (MMcf/d) 2 System Mileage Columbia Gas Transmission Co. Northeast Southwest, Appalachia DE, PA, MD, KY, NC, NJ, NY, OH, VA, WV 1,849 9,350 10,365 Transcontinental Gas Pipeline Co. Northeast, Southeast Southwest AL, GA, LA, MD, MS, NC, NY, SC, TX, VA, GM 2,670 8,466 10,450 Northern Natural Gas Co. Central, Midwest Southwest IA, IL, KS, NE, NM, OK, SD, TX, WI, GM 1,055 7,442 15,874 Texas Eastern Transmission Corp.

344

Predicting pipeline frost load  

SciTech Connect (OSTI)

A study was undertaken to find a formula for predicting the additional load imposed on underground pipelines by soil freezing. The authors conclude that a modified Boussinesq equation can be used to assess this load. Results also showed that frost affects the modulus of soil reaction and therefore the induced stress in flexible pipe.

Fielding, M.B.; Cohen, A.

1988-11-01T23:59:59.000Z

345

New Materials for Hydrogen Pipelines  

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

OAK OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY New Materials for Hydrogen Pipelines New Materials for Hydrogen Pipelines Barton Smith, Barbara Frame, Cliff Eberle, Larry Anovitz, James Blencoe and Tim Armstrong Oak Ridge National Laboratory Jimmy Mays University of Tennessee, Knoxville Hydrogen Pipeline Working Group Meeting August 30-31, 2005 Augusta, Georgia 2 OAK RIDGE NATIONAL LABORATORY U. S. DEPARTMENT OF ENERGY Overview Overview - - Barriers and Technical Targets Barriers and Technical Targets * Barriers to Hydrogen Delivery - Existing steel pipelines are subject to hydrogen embrittlement and are inadequate for widespread H 2 distribution. - Current joining technology (welding) for steel pipelines is major cost factor and can exacerbate hydrogen embrittlement issues.

346

The SINFONI pipeline  

E-Print Network [OSTI]

The SINFONI data reduction pipeline, as part of the ESO-VLT Data Flow System, provides recipes for Paranal Science Operations, and for Data Flow Operations at Garching headquarters. At Paranal, it is used for the quick-look data evaluation. For Data Flow Operations, it fulfills several functions: creating master calibrations; monitoring instrument health and data quality; and reducing science data for delivery to service mode users. The pipeline is available to the science community for reprocessing data with personalised reduction strategies and parameters. The pipeline recipes can be executed either with EsoRex at the command line level or through the Gasgano graphical user interface. The recipes are implemented with the ESO Common Pipeline Library (CPL). SINFONI is the Spectrograph for INtegral Field Observations in the Near Infrared (1.1-2.45 um) at the ESO-VLT. SINFONI was developed and build by ESO and MPE in collaboration with NOVA. It consists of the SPIFFI integral field spectrograph and an adaptive optics module which allows diffraction limited and seeing limited observations. The image slicer of SPIFFI chops the SINFONI field of view on the sky in 32 slices which are re-arranged to a pseudo slit. The latter is dispersed by one of the four possible gratings (J, H, K, H+K). The detector thus sees a spatial dimension (along the pseudo-slit) and a spectral dimension. We describe in this paper the main data reduction procedures of the SINFONI pipeline, which is based on SPRED - the SPIFFI data reduction software developed by MPE, and the most recent developments after more than a year of SINFONI operations.

Andrea Modigliani; Wolfgang Hummel; Roberto Abuter; Paola Amico; Pascal Ballester; Richard Davies; Christophe Dumas; Mattew Horrobin; Mark Neeser; Markus Kissler-Patig; Michele Peron; Juha Rehunanen; Juergen Schreiber; Thomas Szeifert

2007-01-10T23:59:59.000Z

347

Non-thermal atmospheric pressure plasma: Screening for gentle process conditions and antibacterial efficiency on perishable fresh produce  

Science Journals Connector (OSTI)

Abstract Fresh fruits and vegetables, destined to be eaten raw or minimally processed only, harbor the risk of conveying pathogenic microorganisms. Factors such as weather conditions, which favor survival or growth of microorganisms, and improper handling during cultivation or in the postharvest chain, can contribute to outbreaks of food-borne illness. Application of chemical sanitizers or physical treatments often shows a limited efficiency or does not meet consumer acceptance. Availability of gentle and effective techniques for disinfection of fresh produce, therefore, is highly desirable. Non-thermal gas plasma (NTP) treatment is a promising novel technique to reduce the microbial load on fresh fruits and vegetables. However, knowledge on practical applicability of NTP for fresh fruits and vegetables is very limited. In this study, chlorophyll fluorescence imaging (CFI) was used to elucidate suitable process parameters for application of an atmospheric pressure plasma-jet (kINPen 09, INP Greifswald, Germany) on corn salad, a perishable leafy green. Keeping a distance of 17 mm to the plasma-jet, corn salad leaves could be treated for up to 60 s at a fixed power (8 W) and 5 L min? 1 of argon mixed with 0.1% oxygen. Surface temperature on leaves did never exceed 35.2 °C. Antibacterial tests were performed on corn salad, cucumber, apple, and tomato and achieved an inactivation of artificially inoculated Escherichia coli DSM 1116 of 4.1 ± 1.2, 4.7 ± 0.4, 4.7 ± 0, and 3.3 ± 0.9 log units, respectively, after 60 s treatment time. Additional tests with a dielectric barrier discharge plasma and indirect plasma treatment within a remote exposure reactor, fed by a microwave induced plasma torch, did not result in equivalent levels of quality retention as observed using the plasma-jet. Industrial relevance Development of gentle non-thermal disinfection methods aims to provide the industry with new tools to actively improve the microbial status of fresh produce beyond the preventive benefits of good hygiene practices and the limited efficacy of post-harvest washing. The presented study shows how cold plasma can be applied to heat-sensitive lettuce leaves without detrimental effects to product quality. The additional microbiological tests offer insights into the antibacterial capacity of cold plasma on different produce surfaces. The results contribute to prompt the development of appropriate large-scale plasma sources to establish a new plasma-based sanitation technique for fresh fruits and vegetables, which should also be implementable into running process lines.

Matthias Baier; Mandy Görgen; Jörg Ehlbeck; Dietrich Knorr; Werner B. Herppich; Oliver Schlüter

2014-01-01T23:59:59.000Z

348

Single crystal flow reactor for studying reactivities on metal oxide model catalysts at atmospheric pressure to bridge the pressure gap to the adsorption properties determined under UHV conditions  

Science Journals Connector (OSTI)

A flow reactor for the investigation of heterogeneous catalytic reactions on single crystalline metal oxide model catalysts has been designed. It is located in a high pressure cell attached to an UHV analysis cha...

C. Kuhrs; M. Swoboda; W. Weiss

2001-01-01T23:59:59.000Z

349

Abstract--A mesochronous pipeline scheme is described in this paper. In a conventional pipeline scheme each pipeline stage  

E-Print Network [OSTI]

Abstract-- A mesochronous pipeline scheme is described in this paper. In a conventional pipeline scheme each pipeline stage operates on only one data set at a time. In the mesochronous scheme, pipeline stages operate on multiple data sets simultaneously. The clock period in conventional pipeline scheme

Delgado-Frias, José G.

350

ENSC 283: Friction and Minor Losses in Pipelines School of Engineering Science  

E-Print Network [OSTI]

ENSC 283: Friction and Minor Losses in Pipelines 1 School of Engineering Science Mechatronics), between which differential pressure up to a maximum of 200 mbar can be measured. #12;ENSC 283: Friction Figure 1- Components of experimental apparatus. #12;ENSC 283: Friction and Minor Losses in Pipelines 3

Bahrami, Majid

351

Hydrogen Pipeline Working Group Workshop: Code for Hydrogen Pipelines  

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

Code for Hydrogen Code for Hydrogen Pipelines Hydrogen Pipeline Working Group Workshop Augusta, Georgia August 31, 2005 Louis Hayden, PE Chair ASME B31.12 3 Presentation Outline * Approval for new code development * Charge from BPTCS to B31 Standards Committee for Hydrogen Piping/Pipeline code development * B31.12 Status & Structure * Hydrogen Pipeline issues * Research Needs * Where Do We Go From Here? 4 Code for Hydrogen Piping and Pipelines * B31 Hydrogen Section Committee to develop a new code for H 2 piping and pipelines - Include requirements specific to H 2 service for power, process, transportation, distribution, commercial, and residential applications - Balance reference and incorporation of applicable sections of B31.1, B31.3 and B31.8 - Have separate parts for industrial, commercial/residential

352

Pipeline corridors through wetlands  

SciTech Connect (OSTI)

This paper presents preliminary findings from six vegetational surveys of gas pipeline rights-of-way (ROW) through wetlands and quantifies the impacts of a 20-year-old pipeline ROW through a boreal forest wetland. Six sites of various ages were surveyed in ecosystems ranging from coastal marsh to forested wetland. At all sites except one, both the number and the percentage of wetland species on the Row approximated or exceeded those in the adjacent natural area. The boreal forest study showed that (1) adjacent natural wetland areas were not altered in type; (2) water sheet flow restriction had been reversed by nature; (3) no nonnative plant species invaded the natural area; (4) three-quarters of the ROW area was a wetland, and (5) the ROW increased diversity.

Zimmerman, R.E.; Wilkey, P.L. (Argonne National Lab., IL (United States)); Isaacson, H.R. (Gas Research Institute (United States))

1992-01-01T23:59:59.000Z

353

Pipeline corridors through wetlands  

SciTech Connect (OSTI)

This paper presents preliminary findings from six vegetational surveys of gas pipeline rights-of-way (ROW) through wetlands and quantifies the impacts of a 20-year-old pipeline ROW through a boreal forest wetland. Six sites of various ages were surveyed in ecosystems ranging from coastal marsh to forested wetland. At all sites except one, both the number and the percentage of wetland species on the Row approximated or exceeded those in the adjacent natural area. The boreal forest study showed that (1) adjacent natural wetland areas were not altered in type; (2) water sheet flow restriction had been reversed by nature; (3) no nonnative plant species invaded the natural area; (4) three-quarters of the ROW area was a wetland, and (5) the ROW increased diversity.

Zimmerman, R.E.; Wilkey, P.L. [Argonne National Lab., IL (United States); Isaacson, H.R. [Gas Research Institute (United States)

1992-12-01T23:59:59.000Z

354

EIA - Natural Gas Pipeline Network - Natural Gas Pipeline Development &  

U.S. Energy Information Administration (EIA) Indexed Site

Pipelinesk > Development & Expansion Pipelinesk > Development & Expansion About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Natural Gas Pipeline Development and Expansion Timing | Determining Market Interest | Expansion Options | Obtaining Approval | Prefiling Process | Approval | Construction | Commissioning Timing and Steps for a New Project An interstate natural gas pipeline construction or expansion project takes an average of about three years from the time it is first announced until the new pipe is placed in service. The project can take longer if it encounters major environmental obstacles or public opposition. A pipeline development or expansion project involves several steps: Determining demand/market interest

355

Questions and Issues on Hydrogen Pipelines: Pipeline Transmission of Hydrogen  

Broader source: Energy.gov [DOE]

Pipping of GH2 Pipeline. Background: FG 64 built in 50ies, KP added in 70ies, active mining area over total length

356

Applicability of Henry's law to hydrogen, helium, and nitrogen solubilities in water and olive oil at 37 °C and pressures up to 300 atmospheres  

Science Journals Connector (OSTI)

The solubilities of pure hydrogen, helium, and nitrogen in water and olive oil were measured at 37 °C at gas-saturation pressures from 25 to 300 atmospheres. Rigorous thermodynamic criteria were used to assess the applicability of Henry's law to the pressure dependence of the gas solubility in each system. The solubilities of the three gases in water and helium in olive oil followed Henry's law as given by the Krichevsky-Kasarnovsky equation. In contrast, hydrogen and nitrogen in olive oil each attained concentrations high enough to cause significant concentration-dependent variations of the dissolved gas activity coefficient and/or partial molal volume. The consequent deviations from Henry's law were greatest in the nitrogen-oil system, where mole fraction nitrogen solubilities calculated from the Krichevsky-Kasarnovsky equation exceeded measured values by 8, 14, and 23% at 50, 100, and 250 atm, respectively. Incorporation of results into the critical volume model of nitrogen anesthesia, using olive oil as a model of the physiological anesthetic site and literature data for the anesthetic potency of nitrogen in mice breathing high-pressure He-N2-O2 atmospheres, shows that nonideal solution behavior may become important for gases dissolved in physiological hydrophobic regions at biologically active concentrations, even if dissolved gas binding to proteins or other macromolecules is not involved.

Wayne A. Gerth

1985-01-01T23:59:59.000Z

357

Hydrogen permeability and Integrity of hydrogen transfer pipelines  

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

permeability and Integrity permeability and Integrity of hydrogen transfer pipelines Team: Sudarsanam Suresh Babu, Z. Feng, M. L. Santella and S. A. David (Oak Ridge National Laboratory, M&C Division - Steels, Welding & Computational Mechanics) J. G. Blencoe and Larry. M. Anovitz (Oak Ridge National Laboratory, Chemical Sciences Division - High Pressure Permeation Testing) P. S. Korinko (Savannah River National Laboratory - Low Pressure Permeation Testing) Hydrogen Pipeline R&D, Project Review Meeting Oak Ridge National Laboratory, Oak Ridge, TN 37831-6096 January 2005 Acknowledgements Bill Bruce of Edison Welding Institute, Columbus, Ohio (After-service pipeline materials) Ms. M. A. Quintana of Lincoln Electric Company, Cleveland, Ohio (Fe-C-Al-Mn steel welds) David Hursley

358

Optical emission spectroscopic diagnostics of a non-thermal atmospheric pressure helium-oxygen plasma jet for biomedical applications  

Science Journals Connector (OSTI)

In this work we have applied optical emission spectroscopy diagnostics to investigate the characteristics of a non-thermal atmospheric pressure helium plasma jet. The discharge characteristics in the active and afterglow region of the plasma jet that are critical for biomedical applications have been investigated. The voltage-current characteristics of the plasma discharge were analyzed and the average plasma power was measured to be around 18?W. The effect of addition of small fractions of oxygen at 0.1%–0.5% on the plasma jet characteristics was studied. The addition of oxygen resulted in a decrease in plasma plume length due to the electronegativity property of oxygen. Atomic and molecular lines of selected reactive plasma species that are considered to be useful to induce biochemical reactions such as OH transitions A 2 ? + ( ? = 0 1 ) ? X 2 ? ( ? ? = 0 ) at 308?nm and A 2 ? + ( ? = 0 1 ) ? X 2 ? ( ? ? = 1 ) at 287?nm O I transitions 3p5P?3s5S0 at 777.41?nm and 3p3P?3s3S0 at 844.6?nm N2(C-B) second positive system with electronic transition C 3 ? u ? ? B 3 ? g ? in the range of 300–450?nm and N2 +(B-X) first negative system with electronic transition B 2 ? u + ? X 2 ? g + ( ? ? = 0 ) at 391.4?nm have been studied. The atomic emission lines of helium were identified including the He I transitions 3p3P0?2s3S at 388.8?nm 3p1P0? 2s1S at 501.6?nm 3d3D?2p3P0 at 587.6?nm 3d1D?2p1P0 at 667.8?nm 3s3S1?2p3P0 at 706.5?nm 3s1S0?2p1P0 at 728.1?nm and H? transition 2p-3d at 656.3?nm. Using a spectral fitting method the OH radicals at 306–312?nm the rotational and vibrational temperatures equivalent to gas temperatures of the discharge was measured and the effective non-equilibrium nature of the plasma jet was demonstrated. Our results show that in the entire active plasma region the gas temperature remains at 310?±?25?K and 340?±?25?K and it increases to 320?±?25?K and 360?±?25?K in the afterglow region of the plasma jet for pure helium and helium/oxygen (0.1%) mixture respectively. Additionally the vibrational temperatures range from 2200?±?100?K and 2500?±?100?K for pure helium and helium/oxygen (0.1%) mixture respectively. The plasma jet was tested on heat sensitive polymer films used in biomedical applications such as polyethylene terephthalate and poly-L-lactide samples continuously for several minutes without causing any physical or thermal damage to the films. The plasma jet produces significant reactive species of interest while the gas temperatures remain very low demonstrating its potential for a range of biomedical applications.

2013-01-01T23:59:59.000Z

359

Chapter Three - Pipeline Reliability Assessment  

Science Journals Connector (OSTI)

Abstract Another aspect of pipeline integrity management is the assessment of system reliability over the age of the pipeline. In order to assess the aging effects through the pipe’s lifetime, a reliability assessment is carried out for the pipeline or its segment. The assessment of the residual stress effect is carried out by evaluating the reliability of new uncorroded pipelines, which are assumed to be free from any flaw. The influence of residual stress parameters, mean, and coefficient of variation are considered in the reliability assessment.

Ramesh Singh

2014-01-01T23:59:59.000Z

360

Hydrogen Embrittlement in Pipeline Steels  

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

& Materials Division Material Measurement Laboratory HYDROGEN EMBRITTLEMENT IN PIPELINE STEELS AJ Slifka, ES Drexler, RL Amaro, DS Lauria, JR Fekete Applied Chemicals &...

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Electron density measurements of atmospheric-pressure non-thermal N2 plasma jet by Stark broadening and irradiance intensity methods  

Science Journals Connector (OSTI)

An atmospheric-pressure non-thermal plasma jet excited by high frequency alternating current using nitrogen is developed and the electron density in the active region of this plasma jet is investigated by two different methods using optical emission spectroscopy Stark broadening and irradiance intensity method. The irradiance intensity method shows that the average electron density is about 1020/m3 which is slightly smaller than that by the Stark broadening method. However the trend of the change in the electron density with input power obtained by these two methods is consistent.

2014-01-01T23:59:59.000Z

362

Single-Step Process for the Deposition of High Water Contact Angle and High Water Sliding Angle Surfaces by Atmospheric Pressure Dielectric Barrier Discharge  

Science Journals Connector (OSTI)

Single-Step Process for the Deposition of High Water Contact Angle and High Water Sliding Angle Surfaces by Atmospheric Pressure Dielectric Barrier Discharge ... The process used a high voltage alternating current (10?000 or 22?500 Hz) with a constant dissipated power of 100 W (1.1 W cm–2) generated by a Corona generator 7010R from SOFTAL electronic GmbH. ... high adhesion, presumably by generating large van der Waals' forces from the large surface area in very close contact with water. ...

Nicolas D. Boscher; David Duday; Stéphane Verdier; Patrick Choquet

2013-01-22T23:59:59.000Z

363

Pipelining characteristics of Daqing waxy crude oil  

Science Journals Connector (OSTI)

Compared with pipelining Newtonian fluid, the pipelining characteristics of the waxy crude pipeline are sensitive to the complicated rheological properties. When the temperature is lower than the wax appearance t...

Ying-ru Zhu ???; Jin-jun Zhang ???

2007-02-01T23:59:59.000Z

364

RNA-Seq Pipeline in Galaxy  

E-Print Network [OSTI]

Assembly in Galaxy RNA-Seq q Pipeline p • QC : To find outRNA-Seq Pipeline in Galaxy Xiandong Meng 1 , Jeffrey Martinof California RNA--Seq Pipeline in Galaxy RNA Xiandong Meng

Meng, Xiandong

2014-01-01T23:59:59.000Z

365

Chapter 4 - Pipeline Inspection and Subsea Repair  

Science Journals Connector (OSTI)

Abstract Pipeline inspection is a part of the pipeline integrity management for keeping the pipeline in good condition. The rules governing inspection are the pipeline safety regulations. In most cases the pipeline is inspected regularly. The pipeline safety regulations require that the operator shall insure that a pipeline is maintained in an efficient state, in efficient working order and in good repair. The pipeline inspection includes external inspection and internal inspection. In this chapter, the metal loss inspection techniques are discussed. The subsea pipeline internal inspection is normally carried out through non-destructive testing techniques and technologies by intelligent pigs, such as magnetic-flux leakage technology inn axial and circumferential, ultrasound technologies, eddy-current technologies and other technologies. The repair methods are different for shallow and deep water subsea pipelines. The conventional repair methods are used for shallow water pipeline, but diverless repair and intelligent plus are good for deepwater pipeline repair.

Yong Bai; Qiang Bai

2014-01-01T23:59:59.000Z

366

INTERNAL REPAIR OF PIPELINES REVIEW & EVALUATION OF INTERNAL PIPELINE REPAIR TRIALS REPORT  

SciTech Connect (OSTI)

The two broad categories of fiber-reinforced composite liner repair and deposited weld metal repair technologies were reviewed and evaluated for potential application for internal repair of gas transmission pipelines. Both are used to some extent for other applications and could be further developed for internal, local, structural repair of gas transmission pipelines. Evaluation trials were conducted on pipe sections with simulated corrosion damage repaired with glass fiber-reinforced composite liners, carbon fiber-reinforced composite liners, and weld deposition. Additional un-repaired pipe sections were evaluated in the virgin condition and with simulated damage. Hydrostatic failure pressures for pipe sections repaired with glass fiber-reinforced composite liner were only marginally greater than that of pipe sections without liners, indicating that this type of liner is generally ineffective at restoring the pressure containing capabilities of pipelines. Failure pressure for pipe repaired with carbon fiber-reinforced composite liner was greater than that of the un-repaired pipe section with damage, indicating that this type of liner is effective at restoring the pressure containing capability of pipe. Pipe repaired with weld deposition failed at pressures lower than that of un-repaired pipe in both the virgin and damaged conditions, indicating that this repair technology is less effective at restoring the pressure containing capability of pipe than a carbon fiber-reinforced liner repair. Physical testing indicates that carbon fiber-reinforced liner repair is the most promising technology evaluated to-date. Development of a comprehensive test plan for this process is recommended for use in the next phase of this project.

Robin Gordon; Bill Bruce; Ian Harris; Dennis Harwig; George Ritter; Bill Mohr; Matt Boring; Nancy Porter; Mike Sullivan; Chris Neary

2004-09-01T23:59:59.000Z

367

Finite element analysis on thermal upheaval buckling of submarine burial pipelines with initial imperfection  

Science Journals Connector (OSTI)

In-service hydrocarbons must be transported at high temperature and high pressure to ease the flow and prevent the solidification of the wax fraction. The pipeline containing hot oil will expand longitudinally du...

Run Liu ??; Wu-gang Wang ???; Shu-wang Yan ???

2013-01-01T23:59:59.000Z

368

Corrosion pig minimizes shut down in German pipeline  

SciTech Connect (OSTI)

In the Emsland area of Northwest Germany, crude oil is produced from several reservoirs. In January of this year, two leaks occurred simultaneously in a 4,700 m. (3 miles) long, 8-in. field line located in the BEB Erdgas and Erdoel GmbH-operated fields. This pipeline, with a design pressure of 64 bar (940 psi) and an operating pressure of 10 bar (147 psi), transports the entire wet crude oil production of the field to central production facilities. The crude oil is wet and paraffinic. The leaks were the first indication of corrosion in the pipeline which has been in service many years. A newly-developed inspection pig called the Pipeline Corrosion Logger (PiCoLo) from 3P Services, Dalum, was chosen as the primary internal inspection tool. This is an MFL pig system which is particularly suited for small diameter pipeline inspection. During the repair of the pipeline, a related MFL system, the PiCo-Extern also was used to detect internal pitting from the outside diameter of the accessible pipe. This paper reviews the performance of this pit and the problems encountered during this operation.

Bukman, F. [BEB Erdgas und Erdol GmbH, Hannover (Germany); Schmidt, R. [3P Services, Dalum (Germany)

1995-08-01T23:59:59.000Z

369

EIA - Natural Gas Pipeline System - Midwest Region  

Gasoline and Diesel Fuel Update (EIA)

Midwest Region About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 20072008 with selected updates Natural Gas Pipelines in the Midwest Region...

370

Detection of the internal corrosion in pipeline  

E-Print Network [OSTI]

Detection of the internal corrosion in pipeline. Hyeonbae Kang. In this talk I will explain our new methods to detect internal corrosions in pipelines.

2006-10-17T23:59:59.000Z

371

Machinist Pipeline/Apprentice Program Program Description  

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

Machinist PipelineApprentice Program Program Description The Machinist Pipeline Program was created by the Prototype Fabrication Division to fill a critical need for skilled...

372

Praxair extending hydrogen pipeline in Southeast Texas  

SciTech Connect (OSTI)

This paper reports that Praxair Inc., an independent corporation created by the spinoff of Union Carbide Corp.'s Linde division, is extending its high purity hydrogen pipeline system from Channelview, Tex., to Port Arthur, Tex. The 70 mile, 10 in. extension begins at a new pressure swing adsorption (PSA) purification unit next to Lyondell Petrochemical Co.'s Channelview plant. The PSA unit will upgrade hydrogen offgas from Lyondell's methanol plant to 99.99% purity hydrogen. The new line, advancing at a rate of about 1 mile/day, will reach its first customer, Star Enterprise's 250,000 b/d Port Arthur refinery, in September.

Not Available

1992-08-24T23:59:59.000Z

373

Heavy oil transportation by pipeline  

SciTech Connect (OSTI)

Worldwide there are a number of pipelines used to transport heavy crude oils. The operations are facilitated in a variety of ways. For example, the Alyeska pipeline is an insulated pipeline transporting warm oil over 800 miles. This 48-inch line experiences limited heat loss due to the insulation, volume of oil contained, and heat gain due to friction and pumping. Some European trunk lines periodically handle heavy and waxy crudes. This is achieved by proper sizing of batches, following waxy crudes with non-waxy crudes, and increased use of scrapers. In a former Soviet republic, the transportation of heavy crude oil by pipeline has been facilitated by blending with a lighter Siberian crude. The paper describes the pipeline transport of heavy crudes by Interprovincial Pipe Line Inc. The paper describes enhancing heavy oil transportation by emulsion formation, droplet suspension, dilution, drag reducing agents, and heating.

Gerez, J.M.; Pick, A.R. [Interprovincial Pipe Line Inc., Edmonton, Alberta (Canada)

1996-12-31T23:59:59.000Z

374

Scour below submerged skewed pipeline  

Science Journals Connector (OSTI)

Summary Local scour below pipelines commonly occurs due to the erosive action of currents and waves. Scour is a major cause for the failure of underwater pipelines which is very important in water resources management. In this study, experiments were conducted to investigate the effect of four different pipeline orientations (30°, 45°, 60° and 90°) across a channel. The data sets of the laboratory measurements were also collected from published works. The temporal variation of local pipelines scour depth was studied to estimate the scour depth. The scour depth below the pipeline was determined using a regression model with five dimensionless parameters. A regression model with a coefficient of determination (R2 = 0.55) and a low root mean square error (RMSE = 0.47) produced fairly good predictions of the relative scour depth. The proposed equation gave satisfactory results when compared with the existing predictors.

H.Md. Azamathulla; M.A.M. Yusoff; Z.A. Hasan

2014-01-01T23:59:59.000Z

375

A study of diurnal pressure and temperature oscillations in the atmosphere between 500 MB and 50 MB  

E-Print Network [OSTI]

A STUDY OF DIURNAL PRESSURE AND 'IEMPERATURE OSCILLATIONS IN TRE ATMOSPMSRE BETWEEN 500 MB AND 50 MB A Thesis By Victor Shelby Whitehead Submitted to the Graduate School of the Agricultural and Mechanical College of Texas in partial... fulfillment of the requirements for the degree of January l960 IlaJor subJect - Meteorology A STUDY OP DIURNAL PRESSURE AND TEMPERATURE OSCILLATIONS IN THE ATII)SPHERE BETWEEN 500 MB AND 50 MB A Thesis By Victor Shelby Whitehead Approved as to style...

Whitehead, Victor Shelby

1960-01-01T23:59:59.000Z

376

Atmospheric Physics and Earth Observations  

Science Journals Connector (OSTI)

...has been used by atmospheric modelers as a vertical...Ackerman, in Atmospheric Physics from Spacelab...shut-tle allows recovery of the film, we...dry nitrogen at atmospheric pressure. To avoid water condensation on the optical...

M. HERSÉ

1984-07-13T23:59:59.000Z

377

Modeling the barotropic response of the global ocean to atmospheric wind and pressure forcing -comparisons with observations  

E-Print Network [OSTI]

-G. Model outputs are compared to in situ observations with tide gauge data (TG) and bottom pressure gauge data (BPR), and also with T/P altimetric cross over points (noted CO). Intercomparisons were performed/P and Jason altimeters deliver very accurate data sets (within 2 centimeter global error for T/P). How- ever

378

Fiber Reinforced Composite Pipelines  

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

Existing Technology: * FRP is an existing commercial technology currently employed in the oil & gas industry * Commercial product up to 6" diameter and 2500 psig pressure rating. *...

379

Transforming an ObjectOriented Pipeline to a MasterWorker: The StateBased Pipeline  

E-Print Network [OSTI]

Transforming an Object­Oriented Pipeline to a Master­Worker: The State­Based Pipeline Steve Mac in such an algorithm is exposed using a pipeline [5, 6, 7]. The pipeline is a conceptually simple parallel structure in their education. However, expert parallel programmers typically eschew using the pipeline structure, especially

MacDonald, Steve

380

Transforming an Object-Oriented Pipeline to a Master-Worker: The State-Based Pipeline  

E-Print Network [OSTI]

Transforming an Object-Oriented Pipeline to a Master-Worker: The State-Based Pipeline Steve Mac in such an algorithm is exposed using a pipeline [5, 6, 7]. The pipeline is a conceptually simple parallel structure in their education. However, expert parallel programmers typically eschew using the pipeline structure, especially

MacDonald, Steve

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

NETL: News Release - DOE-Funded Pipeline Robot Revolutionizes Inspection  

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

December 04, 2007 December 04, 2007 DOE-Funded Pipeline Robot Revolutionizes Inspection Process Explorer II Demonstrates Huge Potential for Hard-to-Reach Gas Line Inspections The Explorer II robot with remote field eddy current sensor deployed. The Explorer II robot with remote field eddy current sensor deployed. MORGANTOWN, W. Va. - Testing of a new, robotic pipeline inspection tool, developed with funding from the U.S. Department of Energy, has shown that it could revolutionize the pipeline inspection process. The wireless, self-propelled Explorer II proved its worth in September when it was put through its paces in a live 8-inch distribution main pressurized at 100 pound per square inch. The robot was launched and retrieved multiple times as it inspected-with cameras and sensors-a section of the Northwest

382

Chapter Five - Hazards and Threats to a Pipeline System  

Science Journals Connector (OSTI)

Abstract It is important to understand what the threats are that raise the risk probability in a pipeline system and how to assess them. External corrosion on a pipeline could be from microbiological (MIC), galvanic action or electrochemical reaction, where the steel pipe becomes an anode in an electrochemical cell. External corrosion direct assessment (ECDA) is a structured process that is intended to improve safety by assessing and reducing the impact of external corrosion on a pipeline. Other tools for assessing external corrosion are direct current voltage gradient (DCVG), CIP, ILI using intelligent pigging, and pressure testing. Use of guided wave ultrasonic testing (GWUT) as an alternative tool for ECDA has been promoted and sometimes used.

Ramesh Singh

2014-01-01T23:59:59.000Z

383

Subsea pipeline operational risk management  

SciTech Connect (OSTI)

Resources used for inspection, maintenance, and repair of a subsea pipeline must be allocated efficiently in order to operate it in the most cost effective manner. Operational risk management aids in resource allocation through the use of risk assessments and cost/benefit analyses. It identifies those areas where attention must be focused in order to reduce risk. When they are identified, a company`s resources (i.e., personnel, equipment, money, and time) can then be used for inspection, maintenance, and/or repair of the pipeline. The results are cost effective risk reduction and pipeline operation with minimum expenditure.

Bell, R.L.; Lanan, G.A.

1996-12-31T23:59:59.000Z

384

Hydrogen pipeline compressors annual progress report.  

SciTech Connect (OSTI)

The objectives are: (1) develop advanced materials and coatings for hydrogen pipeline compressors; (2) achieve greater reliability, greater efficiency, and lower capital in vestment and maintenance costs in hydrogen pipeline compressors; and (3) research existing and novel hydrogen compression technologies that can improve reliability, eliminate contamination, and reduce cost. Compressors are critical components used in the production and delivery of hydrogen. Current reciprocating compressors used for pipeline delivery of hydrogen are costly, are subject to excessive wear, have poor reliability, and often require the use of lubricants that can contaminate the hydrogen (used in fuel cells). Duplicate compressors may be required to assure availability. The primary objective of this project is to identify, and develop as required, advanced materials and coatings that can achieve the friction, wear, and reliability requirements for dynamically loaded components (seal and bearings) in high-temperature, high-pressure hydrogen environments prototypical of pipeline and forecourt compressor systems. The DOE Strategic Directions for Hydrogen Delivery Workshop identified critical needs in the development of advanced hydrogen compressors - notably, the need to minimize moving parts and to address wear through new designs (centrifugal, linear, guided rotor, and electrochemical) and improved compressor materials. The DOE is supporting several compressor design studies on hydrogen pipeline compression specifically addressing oil-free designs that demonstrate compression in the 0-500 psig to 800-1200 psig range with significant improvements in efficiency, contamination, and reliability/durability. One of the designs by Mohawk Innovative Technologies Inc. (MiTi{reg_sign}) involves using oil-free foil bearings and seals in a centrifual compressor, and MiTi{reg_sign} identified the development of bearings, seals, and oil-free tribological coatings as crucial to the successful development of an advanced compressor. MiTi{reg_sign} and ANL have developed potential coatings for these rigorous applications; however, the performance of these coatings (as well as the nickel-alloy substrates) in high-temperature, high-speed hydrogen environments is unknown at this point.

Fenske, G. R.; Erck, R. A. (Energy Systems)

2011-07-15T23:59:59.000Z

385

Pipeline design essential in making pigging plans  

SciTech Connect (OSTI)

Pigs have gotten an unfortunate reputation for getting stuck in pipelines. As a result, for many years few pigged their pipelines and consequently, many companies are paying the price to repair or replace their corroded pipelines. It is currently considered a necessary evil to run pigs to improve pipeline efficiency and prevent corrosion. Some pipelines were not designed to run pigs and occasionally the wrong type of pig is selected to run in a particular pipeline, increasing the chances of sticking a pig. A pipeline properly designed for pigging along with proper pig selection greatly reduces chances of sticking a pig.

Fisher, H. [BJ Pipeline Cleaners, Houston, TX (United States)

1998-08-01T23:59:59.000Z

386

DOE Hydrogen Pipeline Working Group Workshop  

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

Pipeline Pipeline Working Group Workshop August 31, 2005 Augusta, Georgia Hydrogen Pipeline Experience Presented By: LeRoy H. Remp Lead Project Manager Pipeline Projects ppt00 3 Hydrogen Pipeline - Scope of Presentation Only those systems that are regulated by DOT in the US, DOT delegated state agency, or other federal regulatory authority. Cross property of third party and/or public properties for delivery to customers. Does not include in-plant or in-house hydrogen piping. Does not include piping (aboveground or underground) that delivers to a customer if all property is owned and controlled by Air Products and the customer. ppt00 4 Pipeline Photos ppt00 5 Pipeline Photos ppt00 6 Pipeline Photos ppt00 7 Pipeline Photos ppt00 8 Pipeline Photos ppt00 9 Overview of North American

387

About U.S. Natural Gas Pipelines  

Reports and Publications (EIA)

This information product provides the interested reader with a broad and non-technical overview of how the U.S. natural gas pipeline network operates, along with some insights into the many individual pipeline systems that make up the network. While the focus of the presentation is the transportation of natural gas over the interstate and intrastate pipeline systems, information on subjects related to pipeline development, such as system design and pipeline expansion, are also included.

2007-01-01T23:59:59.000Z

388

Chapter 8 - Pipeline External Corrosion Protection  

Science Journals Connector (OSTI)

Offshore steel pipelines are normally designed for a life ranging from 10 years to 40 years. To enable the pipeline to last for the design life, the pipeline needs to be protected from corrosion both internally and externally. Internal corrosion is related to fluid that is carried by the pipeline, and this topic is not covered here. This chapter describes the method by which the external corrosion of offshore pipelines may be minimized.

Boyun Guo; Shanhong Song; Ali Ghalambor; Tian Ran Lin

2014-01-01T23:59:59.000Z

389

Natural Gas Pipeline Leaks Across Washington, DC  

Science Journals Connector (OSTI)

Pipeline safety in the United States has increased in recent decades, but incidents involving natural gas pipelines still cause an average of 17 fatalities and $133 M in property damage annually. ... Along with reducing greenhouse gas emissions, repairing production and pipeline leaks would improve consumer health and safety and save money. ... (37) Several barriers to pipeline repair and replacement exist, however, as cost recovery for pipeline repairs by distribution companies is often capped by Public Utility Commissions (PUCs). ...

Robert B. Jackson; Adrian Down; Nathan G. Phillips; Robert C. Ackley; Charles W. Cook; Desiree L. Plata; Kaiguang Zhao

2014-01-16T23:59:59.000Z

390

Growth of HfO{sub 2} films using an alternate reaction of HfCl{sub 4} and O{sub 2} under atmospheric pressure  

SciTech Connect (OSTI)

HfO{sub 2} films were deposited onto a Si(100) substrate using an alternate reaction of HfCl{sub 4} and O{sub 2} under atmospheric pressure. Self-limiting growth of the HfO{sub 2} was achieved in the range of the growth temperature above 873K. The X-ray diffraction of the HfO{sub 2} films showed a typical diffraction pattern assigned to the monoclinic polycrystalline phase. Residual chloride concentration in HfO{sub 2} films were not higher than 0.1at%. When the growth temperature was 973K, the HfSiO{sub x} is formed in HfO{sub 2} film. This gives effective permittivity value of 9.6 for the HfO{sub 2} film grown at 573K.

Takahashi, Naoyuki [Department of Materials Science and Technology, Faculty of Engineering Shizuoka University, 3-5-1 Johoku, Hamamatu, Shizuoka 432-8561 (Japan)]. E-mail: tntakah@ipc.shizuoka.ac.jp; Nonobe, Shinichi [Department of Materials Science and Technology, Faculty of Engineering Shizuoka University, 3-5-1 Johoku, Hamamatu, Shizuoka 432-8561 (Japan); Nakamura, Takato [Department of Materials Science and Technology, Faculty of Engineering Shizuoka University, 3-5-1 Johoku, Hamamatu, Shizuoka 432-8561 (Japan)

2004-11-01T23:59:59.000Z

391

VNG's Hampton Roads Pipeline Crossing  

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

VNG's Hampton Roads Pipeline Crossing VNG's Hampton Roads Pipeline Crossing FUPWG Conference Fall 2008 Williamsburg, Virginia Connection to DTI at Quantico Columbia Limitations South Hampton Roads served by a single pipeline Southside dependent on back up systems LNG Propane/air Two supply sources to VNG What if we connected pipelines? It would take Two Water Crossings Two Compressor Stations Construction in densely populated cities It could Deliver over 200,000 Dth of incremental supply Serve VNG, Columbia and Dominion customers ...we would get... Hampton Roads Crossing - HRX Hampton / Newport News Craney Island Norfolk 21 miles of 24" pipe 7 miles in Hampton/Newport News 4 miles in Norfolk 10 miles of water and island crossing 4 mile harbor crossing 4.5 miles on Craney

392

Gas Utility Pipeline Tax (Texas)  

Broader source: Energy.gov [DOE]

All gas utilities, including any entity that owns, manages, operates, leases, or controls a pipeline for the purpose of transporting natural gas in the state for sale or compensation, as well as...

393

Pipeline Processing of VLBI Data  

E-Print Network [OSTI]

As part of an on-going effort to simplify the data analysis path for VLBI experiments, a pipeline procedure has been developed at JIVE to carry out much of the data reduction required for EVN experiments in an automated fashion. This pipeline procedure runs entirely within AIPS, the standard data reduction package used in astronomical VLBI, and is used to provide preliminary calibration of EVN experiments correlated at the EVN MkIV data processor. As well as simplifying the analysis for EVN users, the pipeline reduces the delay in providing information on the data quality to participating telescopes, hence improving the overall performance of the array. A description of this pipeline is presented here.

C. Reynolds; Z. Paragi; M. Garrett

2002-05-08T23:59:59.000Z

394

Pipelines programming paradigms: Prefab plumbing  

SciTech Connect (OSTI)

Mastery of CMS Pipelines is a process of learning increasingly sophisticated tools and techniques that can be applied to your problem. This paper presents a compilation of techniques that can be used as a reference for solving similar problems

Boeheim, C.

1991-08-01T23:59:59.000Z

395

PIPELINES AS COMMUNICATION NETWORK LINKS  

SciTech Connect (OSTI)

This report presents the results of an investigation into two methods of using the natural gas pipeline as a communication medium. The work addressed the need to develop secure system monitoring and control techniques between the field and control centers and to robotic devices in the pipeline. In the first method, the pipeline was treated as a microwave waveguide. In the second method, the pipe was treated as a leaky feeder or a multi-ground neutral and the signal was directly injected onto the metal pipe. These methods were tested on existing pipeline loops at UMR and Batelle. The results reported in this report indicate the feasibility of both methods. In addition, a few suitable communication link protocols for this network were analyzed.

Kelvin T. Erickson; Ann Miller; E. Keith Stanek; C.H. Wu; Shari Dunn-Norman

2005-03-14T23:59:59.000Z

396

Decoupled Sampling for Graphics Pipelines  

E-Print Network [OSTI]

We propose a generalized approach to decoupling shading from visibility sampling in graphics pipelines, which we call decoupled sampling. Decoupled sampling enables stochastic supersampling of motion and defocus blur at ...

Ragan-Kelley, Jonathan Millar

397

New Materials for Hydrogen Pipelines  

Broader source: Energy.gov [DOE]

Presentation by 08-Smith to DOE Hydrogen Pipeline R&D Project Review Meeting held January 5-6, 2005 at Oak Ridge National Laboratory in Oak Ridge, Tennessee.

398

Gas Pipelines, County Roads (Indiana)  

Broader source: Energy.gov [DOE]

A contract with any Board of County Commissioners is required prior to the construction of a pipeline, conduit, or private drain across or along any county highway. The contract will include terms...

399

Interstate Natural Gas Pipelines (Iowa)  

Broader source: Energy.gov [DOE]

This statute confers upon the Iowa Utilities Board the authority to act as an agent of the federal government in determining pipeline company compliance with federal standards within the boundaries...

400

Method and apparatus for directing ions and other charged particles generated at near atmospheric pressures into a region under vacuum  

DOE Patents [OSTI]

A method and apparatus for focusing dispersed charged particles. More specifically, a series of elements within a region maintained at a pressure between 10.sup.-1 millibar and 1 bar, each having successively larger apertures forming an ion funnel, wherein RF voltages are applied to the elements so that the RF voltage on any element has phase, amplitude and frequency necessary to define a confinement zone for charged particles of appropriate charge and mass in the interior of the ion funnel, wherein the confinement zone has an acceptance region and an emmitance region and where the acceptance region area is larger than the emmitance region area.

Smith, Richard D. (Richland, WA); Shaffer, Scott A. (Seattle, WA)

2000-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Creating a pipeline rehabilitation plan  

SciTech Connect (OSTI)

This paper will highlight the various aspects of planning a pipeline rehabilitation project to maximize used resources. The paper will visit in some detail the aspect of pipeline data collection to make rehabilitation decisions, including intelligent pig data and its use, close interval survey and its use, hydrotest data and its use, etc. This paper will also review the analysis of the hydrotest data, the close interval survey data, and its meaning to the overall rehabilitation design and plan. The paper will also assess the various types of pipeline coatings and methods of recoating and typical and innovative cathodic protection methods. The paper will stress analysis of pipeline structural integrity prior to making rehabilitation decisions. It will review cost estimating for various types of pipeline rehabilitation, and look at various alternatives. Finally, this paper will review typical results from various types of rehabilitation and soil conditions. It will emphasize the need to assess the results of the different rehabilitation methods and detail the future pipeline rehabilitation project decision making. The paper will discuss the use of RAP sheets (rehabilitation analysis profile) for data review and suggest various methods to invest rehabilitation dollars to get the greatest quantity of rehabilitation work done for the least cost.

Marshall, W.F.

1997-05-01T23:59:59.000Z

402

The pipeline and future of drug development in schizophrenia  

E-Print Network [OSTI]

The Pipeline and Future of Drug Development in SchizophreniaThe Drug Discovery Pipeline in Schizophrenia Keywords:discuss the current pipeline of drugs for schizophrenia,

Gray, J A; Roth, B L

2007-01-01T23:59:59.000Z

403

Increasing pipeline mechanical integrity through the management of mechanical and toughness data  

SciTech Connect (OSTI)

On October 22, 1991, prompted by two brittle fractures that initiated after pipe movement events, the Office of Pipeline Safety (OPS) issued an Alert Notice requiring pipeline owners and operators of gas or hazardous liquid pipeline facilities to conduct analyses before moving pipelines, whether or not the pipelines are pressurized at the time of movement. Since most operators have not typically maintained detailed information on the material characteristics of all steel pipelines in operation (i.e. fracture toughness properties), the OPS recommended that samples of new pipe, stock pipe, and pipe removed from service should be tested and the results accumulated into a database. To this end, Marathon Pipe Line (MPL) Company developed an in-house database system to manage mechanical, toughness, and weldability properties of pipeline materials. Marathon`s approach to the management of pipeline toughness and mechanical data is presented herein. During the design phase of a planned pipe movement, such as a line lowering, engineers consult the database for mechanical and toughness information related to the grade, size, and line section of interest. Based on the mechanical and toughness historical data, a safe line lowering condition is recommended. Over the last two years, more than 1,200 sets of data on more than 200 line sections have been entered into the database.

Biagiotti, S.F. Jr. [Marathon Oil Co., Littleton, CO (United States); Battisti, J.A. [Marathon Pipe Line Co., Findlay, OH (United States)

1996-07-01T23:59:59.000Z

404

Analysis of a glass fibre reinforced polyurethane composite repair system for corroded pipelines at elevated temperatures  

Science Journals Connector (OSTI)

Abstract The present paper is concerned with the analysis of glass fibre reinforced polyurethane repair systems for metallic pipelines with localised corrosion damage that impair the serviceability. The main motivation for the study presented in this paper is the rehabilitation of corroded pipelines conveying produced water in offshore oil platforms. Although the operating pressure of these pipelines is not very high, the water temperature is between 60 and 90°C, which can be a major shortcoming for the use of polymeric material as repair systems. Tensile tests were performed to analyse the temperature dependence of a polyurethane pre-impregnated, bi-directional E-glass fibre composite. Burst tests were carried out to evaluate the performance of composite reinforcements applied to defects machined in pipeline test specimens. Preliminary ideas for a methodology to estimate the failure pressure of a reinforced specimen with arbitrary localised corrosion damage are presented.

H.S. da Costa Mattos; J.M.L. Reis; L.M. Paim; M.L. da Silva; F.C. Amorim; V.A. Perrut

2014-01-01T23:59:59.000Z

405

Pipeline Safety (Pennsylvania) | Department of Energy  

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

Pipeline Safety (Pennsylvania) Pipeline Safety (Pennsylvania) Pipeline Safety (Pennsylvania) < Back Eligibility Utility Investor-Owned Utility Industrial Municipal/Public Utility Rural Electric Cooperative Program Info State Pennsylvania Program Type Safety and Operational Guidelines Provider Pennsylvania Public Utilities Commission The Pennsylvania legislature has empowered the Public Utility Commission to direct and enforce safety standards for pipeline facilities and to regulate safety practices of certificated utilities engaged in the transportation of natural gas and other gas by pipeline. The Commission is authorized to enforce federal safety standards as an agent for the U.S. Department of Transportation's Office of Pipeline Safety. The safety standards apply to the design, installation, operation,

406

EIA - Natural Gas Pipeline System - Northeast Region  

U.S. Energy Information Administration (EIA) Indexed Site

Northeast Region Northeast Region About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Natural Gas Pipelines in the Northeast Region Overview | Domestic Gas | Canadian Imports | Regional Pipeline Companies & Links Overview Twenty interstate natural gas pipeline systems operate within the Northeast Region (Connecticut, Delaware, Massachusetts, Maine, New Hampshire, New Jersey, New York, Pennsylvania, Rhode Island, Virginia, and West Virginia). These interstate pipelines deliver natural gas to several intrastate natural gas pipelines and at least 50 local distribution companies in the region. In addition, they also serve large industrial concerns and, increasingly, natural gas fired electric power generation facilities.

407

Hurricane-damaged Gulf of Mexico pipeline repaired with cold forging  

SciTech Connect (OSTI)

Damage to Texaco Pipeline Inc.'s Eugene Island Pipeline System (EIPS) in last year's Hurricane Andrew prompted a complex repair project unique for the Gulf of Mexico. Damage, suffered when the anchor of a runaway semisubmersible drilling rig crashed into the 20-in. EPIS during the height of the storm, caused the pipeline to fail under pressure within 48 hr. after start-up following the storm. The paper describes the importance of the EIPS; system safety; Andrew's damage; locating the leak; repair options; the chosen system; mechanical bonding; end connectors and ball flanges; and diving operations.

Lewis, G. (Texaco Pipeline Inc., Houma, LA (United States)); DeGruy, P. (Texaco Inc., New Orleans, LA (United States)); Avery, L. (Big Inch Marine Systems Inc., Lafayette, LA (United States))

1993-05-03T23:59:59.000Z

408

Numerical analysis of corroded pipeline segments revealed by In-Line Inspection tools  

Science Journals Connector (OSTI)

The paper presents computation technology for numerical analysis of multiaxial non-linear stress state of the corroded pipeline segments. Developed computation technology along with the modern In-Line Inspection (ILI) tools gives an opportunity for the transport company experts to predict the high accuracy values of burst and safe maximum pressures of the corroded pipeline segments. It allows a decrease in accidents, to provide maximal economical effectiveness of technical inspection and repair of pipeline networks. Moreover, wide application of computation technology allows to make recommendations to the technical inspection tool companies for improvement of technical specifications of their products.

Vladimir V. Aleshin; Viatcheslav V. Kobyakov; Vadim E. Seleznev

2006-01-01T23:59:59.000Z

409

Effective hardware for connection and repair of polyethylene pipelines using ultrasound modification and heat shrinking. Part 5. Aspects of thermistor couplings and components used in gas-pipeline repair  

Science Journals Connector (OSTI)

Aspects of the use of effective hardware for thermistor couplings and components, which are used for thermistor welding in the repair of low- and medium-pressure polyethylene pipelines are investigated. Parameter...

A. E. Kolosov; O. S. Sakharov; V. I. Sivetskii…

2011-07-01T23:59:59.000Z

410

The validity of analytical methods for predicting self burial of offshore pipelines  

E-Print Network [OSTI]

penetration of ~. D H drostatic ressure test hase, - Prior to placing a pipeline into service, it is necessary to perform a pressure test to insure that the structural integrity of the pipe was maintained during construction and to check for leaks...THE VALIDITY OF ANALYTICAL METHODS FOR PREDICTING SELF BURIAL OF OFFSHORE PIPELINES A Thesis by THOMAS KENWOOD HAMILTON Submitted to the Graduate College of Texas AEM University in partial fulfillment of the requirement for the degree...

Hamilton, Thomas Kenwood

2012-06-07T23:59:59.000Z

411

Mapco's NGL Rocky Mountain pipeline  

SciTech Connect (OSTI)

The Rocky Mountain natural gas liquids (NGL) pipeline was born as a result of major producible gas finds in the Rocky Mountain area after gas deregulation. Gas discoveries in the overthurst area indicated considerable volumes of NGL would be available for transportation out of the area within the next 5 to 7 years. Mapco studied the need for a pipeline to the overthrust, but the volumes were not substantial at the time because there was little market and, consequently, little production for ethane. Since that time crude-based products for ethylene manufacture have become less competitive as a feed product on the world plastics market, and ethane demand has increased substantially. This change in the market has caused a major modification in the plans of the NGL producers and, consequently, the ethane content of the NGL stream for the overthrust area is expected to be 30% by volume at startup and is anticipated to be at 45% by 1985. These ethane volumes enhance the feasibility of the pipeline. The 1196-mile Rocky Mountain pipeline will be installed from the existing facility in W. Texas, near Seminole, to Rock Springs, Wyoming. A gathering system will connect the trunk line station to various plant locations. The pipeline development program calls for a capacity of 65,000 bpd by the end of 1981.

Isaacs, S.F.

1980-01-01T23:59:59.000Z

412

31 - Use of High-Strength Pipeline Steels  

Science Journals Connector (OSTI)

Abstract The increasing demand for oil and gas worldwide requires the construction of high-pressure gas transmission lines with the greatest possible transport efficiency, so the tendency is toward using line pipe of larger diameter and for higher operation pressure, which leads to using higher strength steel grades to avoid large wall thickness. The materials being developed for subsea pipelines and risers are grades X70 and X80 for nonsour service and grades X65 and X70 with a wall thickness of up to 40 mm for sour service. In this chapter, the uses of high-strength steel for subsea pipelines, technological challenges, and solutions are reviewed. The potential benefits and disadvantages of high-strength steels are discussed.

Qiang Bai; Yong Bai

2014-01-01T23:59:59.000Z

413

Use of Fiber Bragg Grating Strain Gages on a Pipeline Specimen Repaired with a CFRE Composite System  

Science Journals Connector (OSTI)

Re-establishing the maximum operating pressure of a segment of pipeline with metal loss defects, such as erosion ... segment altogether, or by applying a localized repair system. The present paper deals with labo...

J. L. F. Freire; V. A. Perrut…

2013-01-01T23:59:59.000Z

414

TASSEL: MLM/GLM Pipeline: Guide to using Tassel Pipeline Terry Casstevens (tmc46@cornell.edu), Zhiwu Zhang, Peter Bradbury, and Edward  

E-Print Network [OSTI]

1 TASSEL: MLM/GLM Pipeline: Guide to using Tassel Pipeline Terry Casstevens (tmc46@cornell..............................................................................................................................................................2 Appendix A: MLM Pipeline Diagrams..........................................................................................................3 Appendix B: GLM Pipeline Diagrams

Buckler, Edward S.

415

Robotic equipment for pipeline repair  

SciTech Connect (OSTI)

Hyperbaric welding provides the most reliable method for connection or repair of subsea oil and gas pipelines. Research on hyperbaric arc welding processes indicates that it should be possible to achieve stable welding conditions with Gas Tungsten Arc (GTA) to approximately 600m, and with Gas Metal Arc (GMA) and Plasma Arc to at least 1,000m. These depths are well beyond the limits of manned saturation diving. At the present time the limitation on the maximum depth to which these processes can be applied, in practice, is the requirement for completely diverless operation deeper than approximately 350m. Fully diverless hyperbaric welding is not presently available to the industry but several diverless pipeline repair systems which utilize mechanical connectors have been developed. This paper reviews the present status of mechanized hyperbaric welding systems currently being used in the North Sea and discusses some of the work being done to achieve fully diverless robotic pipeline repair with both welding and connectors.

Gibson, D.E.; Barratt, K.; Paterson, J. [National Hyperbaric Centre, Aberdeen (United Kingdom)

1995-12-31T23:59:59.000Z

416

Dynamic Process Management for Pipelined Applications  

Science Journals Connector (OSTI)

Many applications, particularly in the area of Signal and Image Processing (SIP) make use of what is referred to as a pipeline architecture. In these pipelined architectures, data are collected from some source and fed into a system for computation. ...

David Cronk; Graham Fagg; Susan Emeny; Scot Tucker

2005-06-01T23:59:59.000Z

417

PGAP: pan-genomes analysis pipeline  

Science Journals Connector (OSTI)

......called pan-genomes analysis pipeline (PGAP), which has integrated...Stanhope, 2007). In PGAP pipeline, 1366 core clusters have been...replication, recombination and repair, cell wall/membrane/envelope...replication, recombination and repair and cell wall/membrane......

Yongbing Zhao; Jiayan Wu; Junhui Yang; Shixiang Sun; Jingfa Xiao; Jun Yu

2012-02-01T23:59:59.000Z

418

Technological Advances in Pipeline Isolation and Repair  

Science Journals Connector (OSTI)

Pipeline isolation has been practised for many years to implement various repairs. The tools originally applied were simple and...

Dr A. Aldeen

1994-01-01T23:59:59.000Z

419

NAZ EDUCATION PIPELINE the-naz.org  

E-Print Network [OSTI]

NAZ EDUCATION PIPELINE the-naz.org 1200 W. Broadway #250 | Minneapolis, MN 55411 | Family Academy is a foundational component of the NAZ "cradle to career" pipeline. NAZ families can enroll in the Family Academy college ready. Families and children move through a "cradle to career" pipeline that provides

Amin, S. Massoud

420

A Pipeline for Computational Historical Linguistics  

E-Print Network [OSTI]

#12;A Pipeline for Computational Historical Linguistics Lydia Steiner Bioinformatics Group an algorithmic pipeline that mimics, as closely as possible, the traditional workflow of language reconstruction known as the comparative method. The pipeline consists of suitably modified algorithms based on recent

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Proceedings of IPC 2004 International Pipeline Conference  

E-Print Network [OSTI]

Proceedings of IPC 2004 International Pipeline Conference October 4 - 8, 2004 Calgary, Alberta) inspection tools have the potential to locate and characterize mechanical damage in pipelines. However, MFL The most common cause of pipeline failure in North America is mechanical damage: denting or gouging

Clapham, Lynann

422

BDP: BrainSuite Diffusion Pipeline  

E-Print Network [OSTI]

BDP: BrainSuite Diffusion Pipeline Chitresh Bhushan #12; Quantify microstructural tissue ROI Connectivity ROI Statistics MPRAGE Diffusion #12;Diffusion Pipeline Dicom to NIfTI Co ROIs Custom ROIs #12;Diffusion Pipeline Dicom to NIfTI Co-registration Diffusion Modeling Tractography

Leahy, Richard M.

423

Tassel Pipeline Tutorial (Command Line Interface)  

E-Print Network [OSTI]

Tassel Pipeline Tutorial (Command Line Interface) Terry Casstevens Institute for Genomic Diversity, Cornell University May 11, 2011 #12;Tassel Pipeline Basics... · Consists of Modules (i.e. Plugins) · Output from one Module can be Input to another Module. Determined by order specified. run_pipeline

Buckler, Edward S.

424

Trawler: de novo regulatory motif discovery pipeline  

E-Print Network [OSTI]

Trawler: de novo regulatory motif discovery pipeline for chromatin immunoprecipitation Laurence, the fastest computational pipeline to date, to efficiently discover over-represented motifs in chromatin present the Trawler pipeline (Fig. 1a) that attempts the de novo identification of all over

Cai, Long

425

Surface modification of biphasic calcium phosphate scaffolds by non-thermal atmospheric pressure nitrogen and air plasma treatment for improving osteoblast attachment and proliferation  

Science Journals Connector (OSTI)

Abstract Surface modifications induced by non-thermal plasma have been used extensively in biomedical applications. The attachment and proliferation of osteoblast cells are important in bone tissue engineering using scaffolds. Hence the effect of non-thermal plasma on hydroxyapatite/?-tri-calcium phosphate (HA/?-TCP) scaffolds in terms of improving osteoblast attachment and proliferation was investigated. Experimental groups were treated with non-thermal plasma for 10 min and 20 min and a control group was not treated with non-thermal plasma. For surface chemistry analysis, X-ray photoelectron spectroscopy (XPS) analysis was carried out. The hydrophilicity was determined from contact angle measurement on the surface. Atomic force microscopy analysis (AFM) was used to test the change in surface roughness and cell attachment and proliferation were evaluated using MC3T3-E1 osteoblast cells. XPS spectra revealed a decreased amount of carbon on the surface of the plasma-treated sample. The contact angle was also decreased following plasma treatment, indicating improved hydrophilicity of plasma-treated surfaces compared to the untreated disc. A significant increase in MC3T3E-1 cell attachment and proliferation was noted on plasma-treated samples as compared to untreated specimens. The results suggest that non-thermal atmospheric pressure nitrogen and air plasma treatments provide beneficial surface characteristics on HA/?-TCP scaffolds.

Yu-Ri Choi; Jae-Sung Kwon; Doo-Hoon Song; Eun Ha Choi; Yong-Keun Lee; Kyoung-Nam Kim; Kwang-Mahn Kim

2013-01-01T23:59:59.000Z

426

On the performance and mechanisms of toluene removal by FeOx/SBA-15-assisted non-thermal plasma at atmospheric pressure and room temperature  

Science Journals Connector (OSTI)

Abstract FeOx/SBA-15 catalysts were prepared via impregnation and utilized for toluene removal in dielectric barrier discharge (DBD) plasma at atmospheric pressure and room temperature. Toluene removal was investigated in the environment of various mixed N2/O2 plasmas, showing that toluene removal efficiency and \\{COx\\} selectivity were greatly increased by FeOx/SBA-15 and that the organic intermediates were greatly reduced by catalysts. In pure N2 plasma, the bulk oxygen in the catalyst was involved in the toluene oxidation, and the 3%FeOx/SBA-15 catalyst showed the optimal toluene oxidation activity. The catalysts were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), N2 adsorption–desorption, X-ray photoelectron spectroscopy (XPS), H2 temperature-programmed reduction (H2-TPR) and O2 temperature-programmed desorption (O2-TPD), showing that toluene oxidation was closely related to the highly dispersed nature of iron on the SBA-15 surface, the reduction temperature of Fe2+ and the oxygen adsorption ability of the catalyst. The pathways of toluene decomposition in the combination of FeOx/SBA-15 with a non-thermal plasma (NTP) system were proposed based on the identified intermediates.

Meijuan Lu; Rong Huang; Junliang Wu; Mingli Fu; Limin Chen; Daiqi Ye

2015-01-01T23:59:59.000Z

427

Characteristics of high-purity Cu thin films deposited on polyimide by radio-frequency Ar/H2 atmospheric-pressure plasma jet  

Science Journals Connector (OSTI)

With a view to fabricating future flexible electronic devices an atmospheric-pressure plasma jet driven by 13.56?MHz radio-frequency power is developed for depositing Cu thin films on polyimide where a Cu wire inserted inside the quartz tube was used as the evaporation source. A polyimide substrate is placed on a water-cooled copper heat sink to prevent it from being thermally damaged. With the aim of preventing oxidation of the deposited Cu film we investigated the effect of adding H2 to Ar plasma on film characteristics. Theoretical fitting of the OH emission line in OES spectrum revealed that adding H2 gas significantly increased the rotational temperature roughly from 800 to 1500?K. The LMM Auger spectroscopy analysis revealed that higher-purity Cu films were synthesized on polyimide by adding hydrogen gas. A possible explanation for the enhancement in the Cu film deposition rate and improvement of purity of Cu films by H2 gas addition is that atomic hydrogen produced by the plasma plays important roles in heating the gas to promote the evaporation of Cu atoms from the Cu wire and removing oxygen from copper oxide components via reduction reaction.

P. Zhao; W. Zheng; Y. D. Meng; M. Nagatsu

2013-01-01T23:59:59.000Z

428

Simultaneous determination of nine trace mono- and di-chlorophenols in water by ion chromatography atmospheric pressure chemical ionization mass spectrometry  

Science Journals Connector (OSTI)

A novel analytical method was proposed for the rapidly simultaneous determination of nine mono-chlorophenols (MCPs) and di-chlorophenols (DCPs) in water samples using eluent generator ion chromatography (IC) coupled with an atmospheric pressure chemical ionization mass spectrometry (APCI-MS) in the negative mode. The IC separation was carried out on an IonPac® AS11 analytical column (250 mm × 4.0 mm) using gradient KOH containing 15% acetonitrile as organic modifier at a constant flow rate of 1.0 mL/min. The molecular ions m/z [M ? H]? 127 and 161 were selected for the quantification in selected ion monitoring (SIM) mode for \\{MCPs\\} and DCPs, respectively. The average recoveries were between 80.6% and 92.6%. Within-day and day-to-day relative standard deviations were less than 12.1% and 13.3%, respectively. The method allowed the nine objective compounds in water samples to be determined at ?g/L levels. It was confirmed that this method could be used in routine analysis.

Micong Jin; Yiwen Yang

2006-01-01T23:59:59.000Z

429

Microcrystalline Si films grown at low temperatures (90-220 deg. C) with high rates in atmospheric-pressure VHF plasma  

SciTech Connect (OSTI)

This work deals with the structural properties of microcrystalline silicon (muc-Si:H) films grown at low temperatures (90-220 deg. C) with high rates in atmospheric-pressure He/H{sub 2}/SiH{sub 4} plasma, which is excited by a 150 MHz very high frequency power using a porous carbon electrode. This plasma permits to enhance the chemical reactions both in gas phase and on the film-growing surface, while suppressing ion impingement upon the surface. Raman crystalline volume fractions of the muc-Si:H films are studied in detail as functions of film thickness and substrate temperature (T{sub sub}). The results show that the muc-Si:H film deposited with 50 (SCCM) (SCCM denotes standard cubic centimeters per minute at STP) SiH{sub 4} has no amorphous transition layers at the film/substrate interface in spite of the high deposition rate of 6.4 nm/s, which is verified by the cross sectional observations with a transmission electron microscope. In addition, the T{sub sub} dependence of Raman crystallinity of the muc-Si:H films indicates that a highly crystallized muc-Si:H film grows even when T{sub sub} is reduced to 90 deg. C. Further systematic studies are needed for both device applications and deposition on thermally sensitive plastic materials.

Kakiuchi, Hiroaki; Ohmi, Hiromasa; Ouchi, Kentaro; Tabuchi, Keita; Yasutake, Kiyoshi [Department of Precision Science and Technology, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871 (Japan)

2009-07-01T23:59:59.000Z

430

Preparation of TiO{sub 2} thin films on the inner surface of a quartz tube using atmospheric-pressure microplasma  

SciTech Connect (OSTI)

Titanium dioxide (TiO{sub 2}) thin films were prepared on the inner surface of a quartz tube, with inner and outer diameters of 1 and 3 mm, respectively, using plasma-enhanced chemical vapor deposition with titanium tetraisopropoxide and oxygen (O{sub 2}) as reactants and helium as the carrier gas at atmospheric pressure. A microplasma was generated inside the tube by rf (13.56 MHz) excitation using externally attached parallel-plate electrodes. The characteristics of the deposited films were examined by scanning electron microscopy, x-ray photoelectron spectroscopy, and x-ray diffraction. A typical as-deposited film had an amorphous structure with a smooth surface and was transparent. With increasing O{sub 2} concentration in the plasma gas phase, the deposited film surface was covered with a large number of TiO{sub 2} nanoparticles. However, the deposited films were a mixture of TiO{sub 2} and amorphous carbon and showed rough surface in the absence of O{sub 2} in the source gas. The effects of the O{sub 2} concentration in the plasma gas on the characteristics of the deposited TiO{sub 2} films are discussed on the basis of the analysis of the gas species generated in the plasma using optical emission spectroscopy.

Yoshiki, Hiroyuki; Saito, Taku [Department of Electrical and Electronic Engineering, Tsuruoka National College of Technology, 104 Inooka-Sawada, Tsuruoka, Yamagata 997-8511 (Japan)

2008-05-15T23:59:59.000Z

431

THE PIPELINE THESIS One of the requirements of the CUNY Pipeline Program is the Pipeline thesis. This is an independent research  

E-Print Network [OSTI]

THE PIPELINE THESIS One of the requirements of the CUNY Pipeline Program is the Pipeline thesis by writing a Pipeline thesis proposal during the spring of your junior year. The thesis should be completed before "going public." 3) Explore the possibility of doing the Pipeline thesis for credit

Dennehy, John

432

THE PIPELINE THESIS One of the requirements of the CUNY Pipeline Program is the Pipeline thesis. This is an independent research  

E-Print Network [OSTI]

THE PIPELINE THESIS One of the requirements of the CUNY Pipeline Program is the Pipeline thesis by writing a Pipeline thesis proposal during the spring of your junior year. The thesis should be completed. The proposal must be completed and signed by your mentor by the beginning of the Pipeline summer research

Dennehy, John

433

Intrastate Pipeline Safety (Minnesota) | Department of Energy  

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

Intrastate Pipeline Safety (Minnesota) Intrastate Pipeline Safety (Minnesota) Intrastate Pipeline Safety (Minnesota) < Back Eligibility Utility Fed. Government Commercial Agricultural Investor-Owned Utility State/Provincial Govt Industrial Construction Municipal/Public Utility Local Government Residential Installer/Contractor Rural Electric Cooperative Tribal Government Low-Income Residential Schools Retail Supplier Institutional Multi-Family Residential Systems Integrator Fuel Distributor Nonprofit General Public/Consumer Transportation Program Info State Minnesota Program Type Siting and Permitting These regulations provide standards for gas and liquid pipeline maintenance and operating procedures, per the Federal Hazardous Liquid and Natural Gas Pipeline Safety Acts, and give the commissioner of public safety the

434

Buckle interaction in deep subsea pipelines  

Science Journals Connector (OSTI)

Abstract The paper investigates the interaction between propagation buckling and upheaval or lateral buckling in deep subsea pipelines. The upheaval and lateral buckling are two possible global buckling modes in long pipelines while the propagation buckling is a local mode that can quickly propagate and damage a long segment of a pipeline in deep water. A numerical study is conducted to simulate buckle interaction in deep subsea pipelines. The interaction produces a significant reduction in the buckle design capacity of the pipeline. This is further exasperated due to the inherent imperfection sensitivity of the problem.

Hassan Karampour; Faris Albermani; Martin Veidt

2013-01-01T23:59:59.000Z

435

Directional boring produces a better pipeline crossing  

SciTech Connect (OSTI)

This paper reviews the design of a directional drilling project by Tennessee Pipeline Company, to cross Chillipitin Creek in Texas. This pipeline was part of an overall pipeline repair and upgrade. Stream erosion had left the existing pipeline exposed in the channel of the creek. The paper describes the drilling equipment selected and the methods used in tracking the drilling operation throughout its completion. The Texas Railroad Commission requires a minimum of 45 feet of cover between the bottom of the stream and the pipeline. The methods used for engineering this crossing are described.

NONE

1996-06-01T23:59:59.000Z

436

Clean Development Mechanism Pipeline | Open Energy Information  

Open Energy Info (EERE)

Clean Development Mechanism Pipeline Clean Development Mechanism Pipeline Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Clean Development Mechanism Pipeline Agency/Company /Organization: UNEP-Risoe Centre, United Nations Environment Programme Sector: Energy, Land Topics: Finance, Implementation, Background analysis Resource Type: Dataset Website: www.cdmpipeline.org/overview.htm Clean Development Mechanism Pipeline Screenshot References: CDM Pipeline[1] Overview "The CDM/JI Pipeline Analysis and Database contains all CDM/JI projects that have been sent for validation/determination. It also contains the baseline & monitoring methodologies, a list of DOEs and several analyses. This monthly newsletter shows a sample of the analysis in the Pipeline. If you want more information, then look into the left column and click on the

437

34 - Pipeline Commissioning, Operations, and Maintenance  

Science Journals Connector (OSTI)

Abstract The commissioning of a pipeline involves the activities after installation required to place the system into services, which activities include hydrostatic testing, cleaning and drying, and the introduction of the product to be transported into the pipeline. Pipeline operations are generally carried out by the pipeline operating company. Detailed operation and maintenance procedures specific to the pipeline should be available for use before the pipeline is commissioned and handed over to operation. Manuals for operation and maintenance should be prepared, setting out the schedules, procedures, and instructions on which activities are to be carried out, including liaison with third parties. In this chapter, the procedures of commissioning, operation, and maintenance of subsea pipeline are detailed.

Qiang Bai; Yong Bai

2014-01-01T23:59:59.000Z

438

Pipeline rehabilitation using field applied tape systems  

SciTech Connect (OSTI)

Bare steel pipelines were first installed years before the turn of the century. Pipeline operators soon realized the lie of bare steel could be greatly enhanced by applying coatings. Thus began ``pipeline rehabilitation.`` Many of the older pipelines were exposed, evaluated, coated and returned to service. This procedure has reached new heights in recent years as coated pipelines of the twentieth century, having lived past their original design life, are now subject to coating failure. Many operator companies with pipelines thirty years or older are faced with ``replace or recondition.`` Considering the emphasis on cost restraints and environmental issues, replacing an existing pipeline is often not the best decision. Rehabilitation is a preferred solution for many operators.

Reeves, C.R. [Tapecoat Co., Evanston, IL (United States)

1998-12-31T23:59:59.000Z

439

Optical and electrical characterization of an atmospheric pressure microplasma jet for Ar/CH{sub 4} and Ar/C{sub 2}H{sub 2} mixtures  

SciTech Connect (OSTI)

A rf microplasma jet working at atmospheric pressure has been characterized for Ar, He, and Ar/CH{sub 4} and Ar/C{sub 2}H{sub 2} mixtures. The microdischarge has a coaxial configuration, with a gap between the inner and outer electrodes of 250 {mu}m. The main flow runs through the gap of the coaxial structure, while the reactive gases are inserted through a capillary as inner electrode. The discharge is excited using a rf of 13.56 MHz, and rms voltages around 200-250 V and rms currents of 0.4-0.6 A are obtained. Electron densities around 8x10{sup 20} m{sup -3} and gas temperatures lower than 400 K have been measured using optical emission spectroscopy for main flows of 3 slm and inner capillary flows of 160 SCCM. By adjusting the flows, the flow pattern prevents the mixing of the reactive species with the ambient air in the discharge region, so that no traces of air are found even when the microplasma is operated in an open atmosphere. This is shown in Ar/CH{sub 4} and Ar/C{sub 2}H{sub 2} plasmas, where no CO and CN species are present and the optical emission spectroscopy spectra are mainly dominated by CH and C{sub 2} bands. The ratio of these two species follows different trends with the amount of precursor for Ar/CH{sub 4} and Ar/C{sub 2}H{sub 2} mixtures, showing the presence of distinct chemistries in each of them. In Ar/C{sub 2}H{sub 2} plasmas, CH{sub x} species are produced mainly by electron impact dissociation of C{sub 2}H{sub 2} molecules, and the CH{sub x}/C{sub 2}H{sub x} ratio is independent of the precursor amount. In Ar/CH{sub 4} mixtures, C{sub 2}H{sub x} species are formed mainly by recombination of CH{sub x} species through three-body reactions, so that the CH{sub x}/C{sub 2}H{sub x} ratio depends on the amount of CH{sub 4} present in the mixture. All these properties make our microplasma design of great interest for applications such as thin film growth or surface treatment.

Yanguas-Gil, A.; Focke, K.; Benedikt, J.; Keudell, A. von [Arbeitsgruppe Reaktive Plasmen, Fakultaet fuer Physik und Astronomie, Ruhr Universitaet Bochum, Universitaetsstrasse 150, 44780 Bochum (Germany)

2007-05-15T23:59:59.000Z

440

EIA - Natural Gas Pipeline System - Links to U.S. Natural Gas Pipeline  

U.S. Energy Information Administration (EIA) Indexed Site

Links Links About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Links to U.S. Natural Gas Pipeline Information - The links below will either direct the user to a narrative describing the system, a pipeline system map, a FERC prescribed "Informational Postings" page, or a FERC Tariff Sheet. Pipeline Name Type of System Regions of Operations Acadian Gas Pipeline System Intrastate Southwest Algonquin Gas Transmission Co Interstate Northeast Alliance Pipeline Co Interstate Central, Midwest Anaconda Pipeline System Gathering Gulf of Mexico ANR Pipeline Co Interstate Midwest ANR Storage Co Interstate Midwest Arkansas Oklahoma Gas Co Intrastate Southwest Arkansas Western Pipeline Co Intrastate

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Calculations allow program to design pipelines for waxy crude--  

SciTech Connect (OSTI)

This article reports that calculations have been derived which will permit writing of a computer program for design of a pipeline handling Newtonian, pseudoplastic, or yield-pseudoplastic crudes. Statistical analysis was used to find out the variation of rheological behavior with operating temperatures and wax content in various Saudi oils. The evaluation was carried out at a statistical confidence level of 95%. Experimental data were correlated with respect to power-law and Herschel-Bulkey law. The pipeline design calculations were carried out through a computer program. The friction factor was determined from Torrance's correlation and Dodge and Metzner correlation for yield-pseudoplastic and pseudoplastic fluids, respectively. The frictional pressure drop was calculated from Darcy-Weisbach equation.

Al-Fariss, T.F.; Desouky, S.E.M. (King Saud Univ., Riyadh, (SA))

1990-01-08T23:59:59.000Z

442

Energy characteristics of an electron-beam-controlled atmospheric-pressure CO/sub 2/ laser utilizing CO/sub 2/--N/sub 2/--H/sub 2/O mixtures  

SciTech Connect (OSTI)

An experimental investigation was made of the energy characteristics of a pulsed electron-beam-controlled atmospheric-pressure CO/sub 2/ laser utilizing CO/sub 2/--N/sub 2/--H/sub 2/O mixtures as a function of the gas mixture composition, of the electric field strength, and of the specific pump power. The energy parameters of the laser were calculated for the experimental conditions. Qualitative and quantitative agreement was obtained between the calculated and experimentally measured data.

Krasyukov, A.G.; Likhanskii, V.V.; Naumov, V.G.; Panchenko, Y.M.; Petrushevich, Y.V.; Pis'mennyi, V.D.; Shachkin, L.V.

1983-07-01T23:59:59.000Z

443

Workforce Pipeline | Argonne National Laboratory  

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

Diversity Diversity Message from the Lab Director Diversity & Inclusion Advisory Council Workforce Pipeline Mentoring Leadership Development Policies & Practices Business Diversity Outreach & Education In the News High school workshop invites girls to explore STEM possibilities Daily Herald EcoCAR 2 competition drives auto engineers to excel Yuma (Ariz.) Sun Mississippi universities collaborate with national labs Mississippi Public Radio Workforce Pipeline Argonne seeks to attract, hire and retain a diverse set of talent in order to meet the laboratory's mission of excellence in science, engineering and technology. In order for Argonne to continue to carry out world-class science, the lab needs to seek out the best talent. Today, that talent is increasingly diverse. Argonne fosters an environment that welcomes and values a diverse

444

BENCHMARKING EMERGING PIPELINE INSPECTION TECHNOLOGIES  

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

Benchmarking Emerging Pipeline Inspection Technologies To Department of Energy National Energy Technology Laboratory (NETL) DE-AP26-04NT40361 and Department of Transportation Research and Special Programs Administration (RSPA) DTRS56-02-T-0002 (Milestone 7) September 2004 Final Report on Benchmarking Emerging Pipeline Inspection Technologies Cofunded by Department of Energy National Energy Technology Laboratory (NETL) DE-AP26-04NT40361 and Department of Transportation Research and Special Programs Administration (RSPA) DTRS56-02-T-0002 (Milestone 7) by Stephanie A. Flamberg and Robert C. Gertler September 2004 BATTELLE 505 King Avenue Columbus, Ohio 43201-2693 Neither Battelle, nor any person acting on their behalf: (1) Makes any warranty or representation, expressed or implied, with respect to the

445

Cogeneration of electricity and refrigeration by work-expanding pipeline gas  

SciTech Connect (OSTI)

The process for the cogeneration of electricity and commercially saleable refrigeration by expanding pressurized pipeline gas with the performance of work is described which comprises: injecting methanol into the pipeline gas; passing the pipeline gas containing the methanol through a turbo-expander coupled to an electrical generator to reduce the pressure of the pipeline gas at least 100 psi but not reducing the pressure enough to drop the temperature of the resulting cold expanded gas below about - 100/sup 0/F; separating aqueous methanol condensate from the cold expanded gas and introducing the condensate into a distillation column for separation into discard water and recycle methanol for injection into the pipeline gas; recovering the saleable refrigeration from the cold expanded gas; adding reboiler heat to the distillation column in an amount required to warm the expanded gas after the recovery of the saleable refrigeration therefrom to a predetermined temperature above 32/sup 0/F; and passing the expanded gas after the recovery of the saleable refrigeration therefrom in heat exchange with methanol vapor rising to the top of the distillation column to condense the methanol vapor so that liquid methanol is obtained partly for reflux in the distillation column and partly for the recycle methanol and simultaneously the expanded gas is warmed to the predetermined temperature above 32/sup 0/F.

Markbreiter, S.J.; Dessanti, D.J.

1987-12-08T23:59:59.000Z

446

Coating disbondment leads causes of external pipeline corrosion  

SciTech Connect (OSTI)

Internal corrosion has proved the most persistent corrosion problem on the approximately 670 miles of pipelines operated since 1959 by Elf Gabon. Causes include the presence of CO{sub 2} in polyphasic lines, residual oxygen and sulfate-reducing bacteria (SRB) in water-injection lines, and bacterial corrosion in crude-oil lines. External corrosion has been less troublesome, caused either by atmospheric marine exposure with frequent wetting or by disbonded coatings on buried lines. These were the major conclusions of a review conducted by the company and presented here in two parts. This article focuses on external corrosion.

Roche, M. (Societe Nationale Elf-Aquitaine (France))

1991-04-01T23:59:59.000Z

447

Capsule injection system for a hydraulic capsule pipelining system  

DOE Patents [OSTI]

An injection system for injecting capsules into a hydraulic capsule pipelining system, the pipelining system comprising a pipeline adapted for flow of a carrier liquid therethrough, and capsules adapted to be transported through the pipeline by the carrier liquid flowing through the pipeline. The injection system comprises a reservoir of carrier liquid, the pipeline extending within the reservoir and extending downstream out of the reservoir, and a magazine in the reservoir for holding capsules in a series, one above another, for injection into the pipeline in the reservoir. The magazine has a lower end in communication with the pipeline in the reservoir for delivery of capsules from the magazine into the pipeline.

Liu, Henry (Columbia, MO)

1982-01-01T23:59:59.000Z

448

Questions and Issues on Hydrogen Pipeline Transmission of Hydrogen  

E-Print Network [OSTI]

Pipeline Inventory Breakdown by gases 0 500 1000 1500 2000 2500 3000 3500 KM N2 2956 km O2 3447 km H2 1736 km CO/Syngas 61 km TOTAL 8200 km Pipeline Inventory 2004 Asie Pacific America Europe #12;Pipeline Christi 8" H2 Pipeline (1998) Originally built as crude oil gathering pipelines (1940-1950) ­ 140 miles

449

Alaskan Oil: Court Ruling Revives Canada Pipeline Issue  

Science Journals Connector (OSTI)

...48-inch hot oil pipeline-the largest ever-from...integrity of the pipeline from potential earthquakes...the pi,peline design. For their part...State-ment on the pipeline project would have...for a pipe-line crossing the federal domain...and its service road a right-of-way...

Luther J. Carter

1973-03-09T23:59:59.000Z

450

Pipeline incidents and emergency repair in the North Sea  

SciTech Connect (OSTI)

The failures of submarine pipelines in the North Sea, and the response of pipeline operators are first discussed. Against this background, the methods currently available for submarine pipeline repairs are reviewed. The Emergency Pipeline Repair Services available are described, and some future developments in the field of submarine pipeline repair are briefly outlined.

Wood, G.D.

1988-12-01T23:59:59.000Z

451

EIA - Natural Gas Pipeline System - Western Region  

U.S. Energy Information Administration (EIA) Indexed Site

Western Region Western Region About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Natural Gas Pipelines in the Western Region Overview | Transportation South | Transportation North | Regional Pipeline Companies & Links Overview Ten interstate and nine intrastate natural gas pipeline companies provide transportation services to and within the Western Region (Arizona, California, Idaho, Nevada, Oregon, and Washington), the fewest number serving any region (see Table below). Slightly more than half the capacity entering the region is on natural gas pipeline systems that carry natural gas from the Rocky Mountain area and the Permian and San Juan basins. These latter systems enter the region at the New Mexico-Arizona and Nevada-Utah State lines. The rest of the capacity arrives on natural gas pipelines that access Canadian natural gas at the Idaho and Washington State border crossings with British Columbia, Canada.

452

Protecting coatings vital to ensuring pipelines` longevity  

SciTech Connect (OSTI)

Today many old pipelines are being rehabilitated because of corrosion damage. A tremendous amount of time, personnel and money is invested to keep these old pipelines operating. The pipeline companies have created new departments to monitor their pipelines, one of which is the corrosion control group. This group is continuously looking for the next weak spot caused by corrosion that needs to be repaired in order to keep the pipeline from being shut down. As these groups discover the corrosion and research its cases, they have been able to teach us what not to do during pipeline construction so the coating will not be damaged. The paper discusses coating protection, types of coating protection, and choosing the best method.

Turnage, C. [Ozzie`s Pipeline Padder, Scottsdale, AZ (United States)

1997-04-01T23:59:59.000Z

453

Kinder Morgan Central Florida Pipeline Ethanol Project  

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

KINDER MORGAN CENTRAL FLORIDA PIPELINE ETHANOL PROJECT ï‚· In December 2008, Kinder Morgan began transporting commercial batches of denatured ethanol along with gasoline shipments in its 16-inch Central Florida Pipeline (CFPL) from Tampa to Orlando, making CFPL the first transmarket gasoline pipeline in the United States to do so. The 16-inch pipeline previously only transported regular and premium gasoline. ï‚· Kinder Morgan invested approximately $10 million to modify the line for ethanol shipments which involved chemically cleaning the pipeline, replacing pipeline equipment that was incompatible with ethanol and expanding storage capacity at its Orlando terminal to handle ethanol shipments. ï‚· Kinder Morgan is responding to customer interest in ethanol blending. Our Florida

454

Pressure pulsations in reciprocating pump piping systems Part 1: Modelling  

E-Print Network [OSTI]

A distributed parameter model of pipeline transmission line behaviour is presented, based on a Galerkin method incorporating frequency-dependent friction. This is readily interfaced to an existing model of the pumping dynamics of a plunger pump to allow time-domain simulations of pipeline pressure pulsations in both suction and delivery lines. A new model for the pump inlet manifold is also proposed.

Shu, Jian-Jun; Edge, Kevin A

2014-01-01T23:59:59.000Z

455

Unsteady heat losses of underground pipelines  

Science Journals Connector (OSTI)

Analytic expressions are presented for the unsteady temperature distribution of the ground and heat losses of an underground pipeline for an arbitrary...

B. L. Krivoshein; V. M. Agapkin

1977-08-01T23:59:59.000Z

456

Pipelines and Underground Gas Storage (Iowa)  

Broader source: Energy.gov [DOE]

These rules apply to intrastate transport of natural gas and other substances via pipeline, as well as underground gas storage facilities. The construction and operation of such infrastructure...

457

Modelling of Paraffin Wax in Oil Pipelines.  

E-Print Network [OSTI]

?? As warm oil or condensate from the reservoir flow through a pipeline on the cold sea bottom, wax often precipitate and deposit on the… (more)

Siljuberg, Morten Kristoffer

2012-01-01T23:59:59.000Z

458

Chapter 14 - Pipeline Testing and Precommissioning  

Science Journals Connector (OSTI)

From its fabrication to start-up, a pipeline system has to pass a series of tests. Some of these, such as the factory acceptance test (FAT), are done onshore at the fabrication yards with individual components. The FAT mainly consists of the inspection, testing, and reporting of the system according to the drawings, specifications, and requirements of the contract. Pipe sections must pass the FAT before they are accepted. Some of the tests, such as the pipeline hydrotest, are mainly done offshore with either a portion of the whole pipeline system or the whole pipeline system. The hydrotests are conducted to check the mechanical strength of the pipeline system and the integrity of the connections. The hydrotest is one of the pipeline precommissioning activities. Precommissioning is performed after the pipeline system is installed, and all the tie-ins are completed to assess the global integrity, qualify the system as ready for commissioning and start-up, confirm the safety to personnel and environment, and confirm the operational control of the pipeline system. This chapter covers the main activities associated with subsea pipeline testing and pre-commissioning.

Boyun Guo; Shanhong Song; Ali Ghalambor; Tian Ran Lin

2014-01-01T23:59:59.000Z

459

Local Linear Learned Image Processing Pipeline  

Science Journals Connector (OSTI)

The local linear learned (L3) algorithm is presented that simultaneously performs the demosaicking, denoising, and color transform calculations of an image processing pipeline for a...

Lansel, Steven; Wandell, Brian

460

Hydrogen Delivery Technologies and Systems - Pipeline Transmission...  

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

Technologies and Systems Pipeline Transmission of Hydrogen Strategic Initiatives for Hydrogen Delivery Workshop May 7- 8, 2003 U.S. Department of Energy Hydrogen, Fuel Cells,...

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Optical Pipeline for Transport of Particles  

Science Journals Connector (OSTI)

We developed an optical pipeline for laser-guiding particles in air using vortex beams. Transport of agglomerates of nanoparticles forward and backward between two optical traps...

Shvedov, Vladlen G; Rode, Andrei V; Izdebskaya, Yana V; Desyatnikov, Anton S; Krolikowski, Wieslaw Z; Kivshar, Yuri S

462

GLAST (FERMI) Data-Processing Pipeline  

SciTech Connect (OSTI)

The Data Processing Pipeline ('Pipeline') has been developed for the Gamma-Ray Large Area Space Telescope (GLAST) which launched June 11, 2008. It generically processes graphs of dependent tasks, maintaining a full record of its state, history and data products. The Pipeline is used to automatically process the data down-linked from the satellite and to deliver science products to the GLAST collaboration and the Science Support Center and has been in continuous use since launch with great success. The pipeline handles up to 2000 concurrent jobs and in reconstructing science data produces approximately 750GB of data products using 1/2 CPU-year of processing time per day.

Flath, Daniel L.; Johnson, Tony S.; Turri, Massimiliano; Heidenreich, Karen A.; /SLAC

2011-08-12T23:59:59.000Z

463

Shorting pipeline and jacket cathodic protection systems  

SciTech Connect (OSTI)

The benefits of shorting pipeline and jacket cathodic protection (CP) systems for the external protection of subsea pipelines based on data from operations in the Gulf of Mexico, Persian Gulf, North Sea, and Indonesia are discussed. Shorting, as opposed to traditional electrical isolation, is cost effective because CP surveys and future retrofits are greatly simplified. Jacket CP systems can provide protection of coated pipelines for distances much greater than normally anticipated. Some simple modeling of jacket/pipeline CP systems is used to illustrate the effect of various design parameters.

Thomason, W.H. (Conoco Inc., Ponca City, OK (United States)); Evans, S. (Conoco Inc., Houston, TX (United States)); Rippon, I.J. (Conoco Ltd., Aberdeen (United Kingdom)); Maurin, A.E. III (Conoco Inc., Lafayette, LA (United States))

1993-09-01T23:59:59.000Z

464

Adhesive technologies in repairing polyethylene pipelines  

Science Journals Connector (OSTI)

Adhesive technologies for repairing polyethylene pipelines are considered taking into account the peculiarities ... the modified binder for application in the gluing repair technologies under consideration. It is...

V. F. Stroganov

2014-07-01T23:59:59.000Z

465

External corrosion assessment in a LNG pipeline  

SciTech Connect (OSTI)

A 16 inch. diameter LNG pipeline which transports 54 MBPD between extraction and fractionation facilities located north-east of Venezuela, showed an accelerated external corrosion even though coating and cathodic protection had been used to protect it. A diagnosis of the external condition of the pipeline was addressed by matching the results obtained by using different techniques such as electromagnetic pigging, DC voltage gradient survey, close interval potential survey, soil classification and resistivity profiles along the pipeline. This paper discusses the factors evaluated to identify sections of the pipe where corrosion problems occurred under disbonded pipeline coating, which required immediate attention for coating rehabilitation.

Luciani, B.; Gutierrez, X. [Corpoven S.A., Caracas (Venezuela)

1998-12-31T23:59:59.000Z

466

Hazardous Liquid Pipelines and Storage Facilities (Iowa)  

Broader source: Energy.gov [DOE]

This statute regulates the permitting, construction, monitoring, and operation of pipelines transporting hazardous liquids, including petroleum products and coal slurries. The definition used in...

467

Pipeline repair development in support of the Oman to India gas pipeline  

SciTech Connect (OSTI)

This paper provides a summary of development which has been conducted to date for the ultra deep, diverless pipeline repair system for the proposed Oman to India Gas Pipeline. The work has addressed critical development areas involving testing and/or prototype development of tools and procedures required to perform a diverless pipeline repair in water depths of up to 3,525 m.

Abadie, W.; Carlson, W.

1995-12-01T23:59:59.000Z

468

Vaporization of bulk metals into single-digit nanoparticles by non-thermal plasma filaments in atmospheric pressure dielectric barrier discharges  

Science Journals Connector (OSTI)

Abstract A compact, inexpensive and simple dielectric barrier discharge (DBD) design is presented with related electro-thermal properties for the production of metal nanoparticles. Nanoparticle formation and growth mechanisms are depicted from size distributions and chemical analyses of particles collected just after the 70 kHz DBD in nitrogen. At first, it is confirmed that the initial local vapor flux is produced from the spots of interaction between plasma filaments and different metal electrodes (Au, Ag, and Cu). Amorphous and crystalline pure metal primary nanoparticles with diameters below 5 nm are then produced by physical nucleation in expanding vapors jets. Finally, some small agglomerates with diameters still below 5 nm are also formed by ballistic agglomeration of a fraction of these primary particles. This happens at the end of the vapor jet expansion, as well as after the production during the transit between subsequent filaments in the DBD. The first local agglomeration step can be limited at reduced energy per filament by lowering the initial vapor flux in smaller gaps, while the second growth step depends on the transit time in the DBD. Hence, such “low” energy plasma filaments (up to a few tens of µJ) lower the initial vapor flux to control the agglomeration. DBD were thus successfully tested for the production of tailored nanoparticles with tunable size, controlled morphology of spherical agglomerates and the same composition as the metal electrode. The production per unit energy (mol J?1) is related to both plasma and material properties. Besides, neglecting vapor and nanoparticles losses, the mass production rate (g s?1) depends on the input power related to the product of the energy controlling the production per filament times the number of filaments per second, for any given material. This non-thermal plasma process presents great potentialities for nano-technologies since it is performed at atmospheric pressure and can be used to reach size-dependent properties of nano-materials, without any gaseous precursor or solvent.

J.-P. Borra; N. Jidenko; J. Hou; A. Weber

2015-01-01T23:59:59.000Z

469

Liquid Sampling-Atmospheric Pressure Glow Discharge (LS-APGD) Ionization Source for Elemental Mass Spectrometry: Preliminary Parametric Evaluation and Figures of Merit  

SciTech Connect (OSTI)

A new, low power ionization source for the elemental analysis of aqueous solutions has recently been described. The liquid sampling-atmospheric pressure glow discharge (LS-APGD) source operates at relatively low currents (<20 mA) and solution flow rates (<50 ?L min-1), yielding a relatively simple alternative for atomic mass spectrometry applications. The LS-APGD has been interfaced to what is otherwise an organic, LC-MS mass analyzer, the Thermo Scientific Exactive Orbitrap without any modifications; other than removing the electrospray ionization (ESI) source supplied with that instrument. A glow discharge is initiated between the surface of the test solution exiting a glass capillary and a metallic counter electrode mounted at a 90° angle and separated by a distance of ~5 mm. As with any plasma-based ionization source, there are key discharge operation and ion sampling parameters that affect the intensity and composition of the derived mass spectra; including signal-to-background ratios. We describe here a preliminary parametric evaluation of the roles of discharge current, solution flow rate, argon sheath gas flow rate, and ion sampling distance as they apply on this mass analyzer system. A cursive evaluation of potential matrix effects due to the presence of easily ionized elements (EIEs) indicate that sodium concentrations of up to 500 ?g mL-1 generally cause suppressions of less than 50%, dependant upon the analyte species. Based on the results of this series of studies, preliminary limits of detection (LOD) have been established through the generation of calibration functions. Whilst solution-based concentrations LOD levels of 0.02 – 2 ?g mL-1 3 are not impressive on the surface, the fact that they are determined via discrete 5 ?L injections leads to mass-based detection limits at picogram to singlenanogram levels. The overhead costs associated with source operation (10 W d.c. power, solution flow rates of <50 ?L min-1, and gas flow rates <10 mL min-1) are very attractive. While further optimization in the source design is suggested here, it is believed that the LS-APGD ion source may present a practical alternative to inductively-coupled plasma (ICP) sources typically employed in elemental mass spectrometry.

Quarles, C. Derrick; Carado, Anthony J.; Barinaga, Charles J.; Koppenaal, David W.; Marcus, R. Kenneth

2012-01-01T23:59:59.000Z

470

Structural Genomics of Minimal Organisms: Pipeline and Results  

E-Print Network [OSTI]

of Minimal Organisms: Pipeline and Results Sung-Hou Kim*,~500 genes, respectively). Pipeline: To achieve our mission,determination. Over all pipeline schemes for the single-path

Kim, Sung-Hou

2008-01-01T23:59:59.000Z

471

Global buckling behavior of submarine unburied pipelines under thermal stress  

Science Journals Connector (OSTI)

Buckling of submarine pipelines under thermal stress is one of the most important problems to be considered in pipeline design. And pipeline with initial imperfections will easily undergo failure due to global buckling

Lin-ping Guo ???; Run Liu ??; Shu-wang Yan ???

2013-07-01T23:59:59.000Z

472

A new versatile method for modelling geomagnetic induction in pipelines  

Science Journals Connector (OSTI)

......geomagnetic induction in pipelines D. H. Boteler...2617 Anderson Road, Ottawa. E-mail...telluric currents in pipelines and creates fluctuations...being used at the design stage allowing...PSP variations on pipelines crossing or adjacent to......

D. H. Boteler

2013-01-01T23:59:59.000Z

473

Supplementary Figure 1 SHAPE-MaP data analysis pipeline.  

E-Print Network [OSTI]

Supplementary Figure 1 SHAPE-MaP data analysis pipeline. Outline of software pipeline that fully.1 GHz Intel Core i7 and 16 GB RAM). This strategy is implemented in the SHAPE-MaP Folding Pipeline

Cai, Long

474

Effects of optimal concentrations of asphalt-tar substances and wax on the rheological characteristics of high-viscosity petroleum during transport in large pipelines  

Science Journals Connector (OSTI)

It is shown that the optimum ratio of asphalt-tar substances to wax is independent of temperature and pressure in transport of high-viscosity petroleum through pipelines.

A. M. Shammazov

1984-06-01T23:59:59.000Z

475

MRO/CRISM Retrieval of Surface Lambert Albedos for Multispectral Mapping of Mars with DISORT-based Rad. Transfer Modeling: Phase 1 - Using Historical Climatology for Temperatures, Aerosol Opacities, & Atmo. Pressures  

E-Print Network [OSTI]

We discuss the DISORT-based radiative transfer pipeline ('CRISM_LambertAlb') for atmospheric and thermal correction of MRO/CRISM data acquired in multispectral mapping mode (~200 m/pixel, 72 spectral channels). Currently, in this phase-one version of the system, we use aerosol optical depths, surface temperatures, and lower-atmospheric temperatures, all from climatology derived from Mars Global Surveyor Thermal Emission Spectrometer (MGS-TES) data, and surface altimetry derived from MGS Mars Orbiter Laser Altimeter (MOLA). The DISORT-based model takes as input the dust and ice aerosol optical depths (scaled to the CRISM wavelength range), the surface pressures (computed from MOLA altimetry, MGS-TES lower-atmospheric thermometry, and Viking-based pressure climatology), the surface temperatures, the reconstructed instrumental photometric angles, and the measured I/F spectrum, and then outputs a Lambertian albedo spectrum. The Lambertian albedo spectrum is valuable geologically since it allows the mineralogical ...

McGuire, P C; Smith, M D; Arvidson, R E; Murchie, S L; Clancy, R T; Roush, T L; Cull, S C; Lichtenberg, K A; Wiseman, S M; Green, R O; Martin, T Z; Milliken, R E; Cavender, P J; Humm, D C; Seelos, F P; Seelos, K D; Taylor, H W; Ehlmann, B L; Mustard, J F; Pelkey, S M; Titus, T N; Hash, C D; Malaret, E R

2009-01-01T23:59:59.000Z

476

Trenches Under The Pipeline: The Educational Trajectories of Chicano Male Continuation High School Students  

E-Print Network [OSTI]

Trenches Under The Pipeline: The Educational Trajectories ofnavigate the educational pipeline, continuation high school

Malagon, Maria

2010-01-01T23:59:59.000Z

477

E-Print Network 3.0 - arctic gas pipeline Sample Search Results  

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

pipeline Search Powered by Explorit Topic List Advanced Search Sample search results for: arctic gas pipeline...

478

E-Print Network 3.0 - atmospheric plasma jet Sample Search Results  

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

University Collection: Engineering 2 Atmospheric Pressure Plasma Jet Treatment of Polyethylene Surfaces for Summary: Atmospheric Pressure Plasma Jet Treatment of Polyethylene...

479

Addressing the workforce pipeline challenge  

SciTech Connect (OSTI)

A secure and affordable energy supply is essential for achieving U.S. national security, in continuing U.S. prosperity and in laying the foundations to enable future economic growth. To meet this goal the next generation energy workforce in the U.S., in particular those needed to support instrumentation, controls and advanced operations and maintenance, is a critical element. The workforce is aging and a new workforce pipeline, to support both current generation and new build has yet to be established. The paper reviews the challenges and some actions being taken to address this need.

Leonard Bond; Kevin Kostelnik; Richard Holman

2006-11-01T23:59:59.000Z

480

Addressing the workforce pipeline challenge  

SciTech Connect (OSTI)

A secure and affordable energy supply is essential for achieving U.S. national security, in continuing U.S. prosperity and in laying the foundations to enable future economic growth. To meet this goal the next generation energy workforce in the U.S., in particular those needed to support instrumentation, controls and advanced operations and maintenance, is a critical element. The workforce is aging and a new workforce pipeline, to support both current generation and new build has yet to be established. The paper reviews the challenges and some actions being taken to address this need. (authors)

Bond, L.; Kostelnik, K.; Holman, R. [Idaho National Laboratory, P.O. Box 1625, Idaho Falls, ID 83415-3898 (United States)

2006-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "atmospheric pressure pipeline" 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

Fuel Cell Technologies Office: 2005 Hydrogen Pipeline Working Group  

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

2005 Hydrogen Pipeline 2005 Hydrogen Pipeline Working Group Workshop to someone by E-mail Share Fuel Cell Technologies Office: 2005 Hydrogen Pipeline Working Group Workshop on Facebook Tweet about Fuel Cell Technologies Office: 2005 Hydrogen Pipeline Working Group Workshop on Twitter Bookmark Fuel Cell Technologies Office: 2005 Hydrogen Pipeline Working Group Workshop on Google Bookmark Fuel Cell Technologies Office: 2005 Hydrogen Pipeline Working Group Workshop on Delicious Rank Fuel Cell Technologies Office: 2005 Hydrogen Pipeline Working Group Workshop on Digg Find More places to share Fuel Cell Technologies Office: 2005 Hydrogen Pipeline Working Group Workshop on AddThis.com... Publications Program Publications Technical Publications Educational Publications Newsletter Program Presentations

482

Fuel Cell Technologies Office: 2007 Hydrogen Pipeline Working Group  

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

2007 Hydrogen Pipeline 2007 Hydrogen Pipeline Working Group Workshop to someone by E-mail Share Fuel Cell Technologies Office: 2007 Hydrogen Pipeline Working Group Workshop on Facebook Tweet about Fuel Cell Technologies Office: 2007 Hydrogen Pipeline Working Group Workshop on Twitter Bookmark Fuel Cell Technologies Office: 2007 Hydrogen Pipeline Working Group Workshop on Google Bookmark Fuel Cell Technologies Office: 2007 Hydrogen Pipeline Working Group Workshop on Delicious Rank Fuel Cell Technologies Office: 2007 Hydrogen Pipeline Working Group Workshop on Digg Find More places to share Fuel Cell Technologies Office: 2007 Hydrogen Pipeline Working Group Workshop on AddThis.com... Publications Program Publications Technical Publications Educational Publications Newsletter Program Presentations

483

Report to Congress: Dedicated Ethanol Pipeline Feasability Study...  

Office of Environmental Management (EM)

Report to Congress: Dedicated Ethanol Pipeline Feasability Study - Energy Independence and Security Act of 2007 Section 243 Report to Congress: Dedicated Ethanol Pipeline...

484

"Assessment of the Adequacy of Natural Gas Pipeline Capacity...  

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

"Assessment of the Adequacy of Natural Gas Pipeline Capacity in the Northeast United States" Report Now Available "Assessment of the Adequacy of Natural Gas Pipeline Capacity in...

485

EIA - Natural Gas Pipeline Network - Regional Overview and Links  

U.S. Energy Information Administration (EIA) Indexed Site

Overview and Links About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 20072008 with selected updates Regional Overviews and Links to Pipeline...

486

Evaluation of Natural Gas Pipeline Materials for Hydrogen Science...  

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

Evaluation of Natural Gas Pipeline Materials for Hydrogen Science Evaluation of Natural Gas Pipeline Materials for Hydrogen Science Presentation by 04-Adams to DOE Hydrogen...

487

Assessment of the Adequacy of Natural Gas Pipeline Capacity in...  

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

Assessment of the Adequacy of Natural Gas Pipeline Capacity in the Northeast United States - November 2013 Assessment of the Adequacy of Natural Gas Pipeline Capacity in the...

488

Price of Massena, NY Natural Gas Pipeline Exports to Canada ...  

U.S. Energy Information Administration (EIA) Indexed Site

Massena, NY Natural Gas Pipeline Exports to Canada (Dollars per Thousand Cubic Feet) Price of Massena, NY Natural Gas Pipeline Exports to Canada (Dollars per Thousand Cubic Feet)...

489

2005 Hydrogen Pipeline Working Group Workshop | Department of...  

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

Presentations on August 31, 2005 Hydrogen Pipeline Experience (PDF 473 KB), Leroy Remp, Air Products Questions and Issues on Hydrogen Pipelines (PDF 1 MB), Jim Campbell, Air...

490

Hydrogen Embrittlement of Pipeline Steels: Causes and Remediation  

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

Embrittlement of Pipeline Steels: Causes and Remediation P. Sofronis, I. M. Robertson, D. D. Johnson University of Illinois at Urbana-Champaign Hydrogen Pipeline Working Group...

491

Hydrogen Delivery Technologies and Systems- Pipeline Transmission of Hydrogen  

Broader source: Energy.gov [DOE]

Hydrogen Delivery Technologies and Systems - Pipeline Transmission of Hydrogen. Design and operations standards and materials for hydrogen and natural gas pipelines.

492

Full scale experimental analysis of stress states in sleeve repairs of gas pipelines  

Science Journals Connector (OSTI)

This study discusses the experimental determination of stress states in sleeve repairs of underground gas pipelines. Work was done to define the effects of the reduction of pressure during welding, the load and place of positioning clamps, the length of the repair sleeve, and the use of O'ring-based devices to prevent gas leakage. Tests were carried out in reinforcements, welded with internal pressure equal to 60, 80 and 100% of the service pressure. High stresses were generated in tests carried out with short sleeves and O'rings, and occurred once the sleeve was fully welded and the pipeline pressure re-established. Maximum stresses, up to 270 MPa, were generated after about 1 min following closing of venting valves, on tests with artificial gas leaks. From the results of these experimental studies, it is concluded that several operative aspects could be optimised, to minimise the stresses in the reinforcements and to reduce the risk of failures.

M.D Chapetti; J.L Otegui; C Manfredi; C.F Martins

2001-01-01T23:59:59.000Z

493

Atmospheric Chemistry  

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

competencies Atmospheric Chemistry Atmospheric Chemistry is the study of the composition of the atmosphere, the sources and fates of gases and particles in air, and changes induced...

494

EIA - Natural Gas Pipeline System - Southwest Region  

U.S. Energy Information Administration (EIA) Indexed Site

Southwest Region Southwest Region About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Natural Gas Pipelines in the Southwest Region Overview | Export Transportation | Intrastate | Connection to Gulf of Mexico | Regional Pipeline Companies & Links Overview Most of the major onshore interstate natural gas pipeline companies (see Table below) operating in the Southwest Region (Arkansas, Louisiana, New Mexico, Oklahoma, and Texas) are primarily exporters of the region's natural gas production to other parts of the country and Mexico, while an extensive Gulf of Mexico and intrastate natural gas pipeline network is the main conduit for deliveries within the region. More than 56,000 miles of natural gas pipeline on more than 66 intrastate natural gas pipeline systems (including offshore-to-onshore and offshore Gulf of Mexico pipelines) deliver natural gas to the region's local natural gas distribution companies and municipalities and to the many large industrial and electric power facilities located in the region.

495

Cleaning the Valhall offshore oil pipeline  

SciTech Connect (OSTI)

Severe wax deposits built up in the 20-in. (500-mm) Valhall subsea crude oil pipeline over a period of years. The successful program to remove these deposits gradually but completely with a series of foam and mechanical pigs is described, including details on equipment and procedures. The unique risks and difficulties associated with solids removal in offshore pipelines are discussed.

Marshall, G.R. (Amoco Norway Oil Co. (NO))

1990-08-01T23:59:59.000Z

496

Sensitive multi-photon nonlinear laser spectroscopic methods for isotope analysis in atmospheric and environmental applications  

E-Print Network [OSTI]

measurements in atmospheric pressure plasma. However, nonean atmospheric radio-frequency inductively coupled plasma (atmospheric atomizer. Also, the inductively coupled plasma

Lyons, Wendy Jean

2009-01-01T23:59:59.000Z

497

EIA - Natural Gas Pipeline System - Central Region  

U.S. Energy Information Administration (EIA) Indexed Site

Central Region Central Region About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Natural Gas Pipelines in the Central Region Overview | Domestic Gas | Exports | Regional Pipeline Companies & Links Overview Twenty-two interstate and at least thirteen intrastate natural gas pipeline companies (see Table below) operate in the Central Region (Colorado, Iowa, Kansas, Missouri, Montana, Nebraska, North Dakota, South Dakota, Utah, and Wyoming). Twelve interstate natural gas pipeline systems enter the region from the south and east while four enter from the north carrying Canadian supplies. The average utilization rates on those shipping Canadian natural gas tend to be higher than those carrying domestic supplies.

498

EIA - Natural Gas Pipeline System - Southeast Region  

U.S. Energy Information Administration (EIA) Indexed Site

Southeast Region Southeast Region About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Natural Gas Pipelines in the Southeast Region Overview | Transportation to Atlantic & Gulf States | Gulf of Mexico Transportation Corridor | Transportation to the Northern Tier | Regional Pipeline Companies & Links Overview Twenty-three interstate, and at least eight intrastate, natural gas pipeline companies operate within the Southeast Region (Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina, and Tennessee). Fifteen of the twenty-one interstate natural gas pipelines originate in the Southwest Region and receive most of their supplies from the Gulf of Mexico or from the States of Texas and/or Louisiana.

499

Encirclement sleeves reduce pipeline repair costs  

SciTech Connect (OSTI)

Welded sleeve, or replacement of line repair methods have been used successfully for many years in the pipeline industry but can lead to other difficulties for a pipeline operator. Clock Spring`s composite sleeves have been used in over ten thousand pipeline repairs with pipe sizes ranging from 6- to 56-inches in diameter, all without costly shutdown, welding or purging. Repairs can be completed while the pipeline is fully operational and require only six inches of clearance under the pipe for wrapping the eight thicknesses of the coil. This minimizes costly digging and backfilling over long runs of pipe and necessary shoring for personnel safety. Also it provides a more cost-effective alterative to conventional pipeline repair since special handling, lifting, or installation equipment is not needed. This paper reviews the installation and performance of these sleeves.

NONE

1996-01-01T23:59:59.000Z

500

Leakage Risk Assessment of CO{sub 2} Transportation by Pipeline at the Illinois Basin Decatur Project, Decatur, Illinois  

SciTech Connect (OSTI)

The Illinois Basin Decatur Project (IBDP) is designed to confirm the ability of the Mt. Simon Sandstone, a major regional saline-water-bearing formation in the Illinois Basin, to store 1 million tons of carbon dioxide (CO{sub 2}) injected over a period of three years. The CO{sub 2} will be provided by Archer Daniels Midland (ADM) from its Decatur, Illinois, ethanol plant. In order to transport CO{sub 2} from the capture facility to the injection well (al