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Note: This page contains sample records for the topic "valve regulated lead" 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

Separators for valve regulated lead acid batteries  

Science Conference Proceedings (OSTI)

This paper reviews some aspects of the past history of the valve regulated lead acid (VRLA) battery in relationship to microglass separators that have been used from the conception of VRLA technology. It also focuses on some aspects of compression properties of the separator.

Zguris, G.C. [Hollingsworth & Vose Co., West Groton, MT (United States)

1995-01-01T23:59:59.000Z

2

Valve Regulated Lead Acid (VRLA) Battery Qualification Assessment  

Science Conference Proceedings (OSTI)

Valve-regulated lead acid (VRLA) batteries have been proposed as a prospective dc power source for Class 1E service in passive nuclear plants. However, they are not currently covered by IEEE Standard 535, which addresses qualification for this service. Furthermore, there are reports of significant failure modes or mechanisms beyond the predominant failure mode of grid corrosion of the positive plate associated with vented lead acid (VLA) batteries.

2009-11-06T23:59:59.000Z

3

DOE specification: Valve-regulated type lead-acid storage batteries  

DOE Green Energy (OSTI)

This document contains a ``fill-in-the-blanks`` guide specification for procurement of sealed valve-regulated type lead-acid storage batteries, for uninterruptible power supply applications.

NONE

1996-08-01T23:59:59.000Z

4

Mathematical Modeling of Current-Interrupt and Pulse Operation of Valve-Regulated Lead Acid Cells  

E-Print Network (OSTI)

are resolved. Of the two candidate battery systems, the low cost and ease of operation of the VRLA battery the last decade, advanced batteries have re- ceived much attention. At present, only the valve-regulated lead acid VRLA and the nickel-metal hydride Ni-MH battery are being actively considered

5

Valve-Regulated Lead Acid (VRLA) Battery Seismic Testing: Initial Investigation  

Science Conference Proceedings (OSTI)

This report describes the results obtained when subjecting naturally aged valve-regulated lead acid (VRLA) batteries from two manufacturers to the capacity test, seismic test, and final capacity test described in IEEE Standard 535- 2006, Standard for Qualification of Class 1E Lead Storage Batteries for Nuclear Power Generating Stations. The project that is the subject of this report was not intended to be a formal qualification program or process. Instead, it was a test of the seismic ruggedness of ...

2013-04-12T23:59:59.000Z

6

DOE-SPEC-3019-96; Valve-Regulated Type Lead-Acid Storage Batteries  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

9-96 9-96 August 1996 DOE SPECIFICATION VALVE-REGULATED TYPE LEAD-ACID STORAGE BATTERIES U.S. Department of Energy FSC 6140 Washington, D.C. 20585 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. This document has been reproduced directly from the best available copy. Available to DOE and DOE contractors from the Office of Scientific and Technical Information, P.O. Box 62, Oak Ridge, TN 37831; (423) 576-8401. Available to the public from the U.S. Department of Commerce, Technology Administration, National Technical Information Service, Springfield, VA 22161; (703) 487-4650. Order No. DE96009470 DOE-SPEC-3019-96 THIS PAGE INTENTIONALLY LEFT BLANK DOE-SPEC-3019-96 iii FOREWORD 1. Use of this purchase specification is not mandatory. User should review the document and

7

Self-regulating valve  

DOE Patents (OSTI)

A variable, self-regulating valve having a hydraulic loss coefficient proportional to a positive exponential power of the flow rate. The device includes two objects in a flow channel and structure which assures that the distance between the two objects is an increasing function of the flow rate. The range of spacing between the objects is such that the hydraulic resistance of the valve is an increasing function of the distance between the two objects so that the desired hydraulic loss coefficient as a function of flow rate is obtained without variation in the flow area.

Humphreys, D.A.

1982-07-20T23:59:59.000Z

8

Nonlinear springs with applications to flow regulation valves and mechanisms  

E-Print Network (OSTI)

This thesis focuses on the application of nonlinear springs for fluid flow control valves where geometric constraints, or fabrication technologies, limit the use of available solutions. Types of existing nonlinear springs ...

Freeman, David Calvin

2008-01-01T23:59:59.000Z

9

Safety valve  

SciTech Connect

The safety valve contains a resilient gland to be held between a valve seat and a valve member and is secured to the valve member by a sleeve surrounding the end of the valve member adjacent to the valve seat. The sleeve is movable relative to the valve member through a limited axial distance and a gap exists between said valve member and said sleeve.

Bergman, Ulf C. (Malmoe, SE)

1984-01-01T23:59:59.000Z

10

Plug valve  

SciTech Connect

This patent describes an improved plug valve wherein a novel shape for the valve plug and valve chamber provide mating surfaces for improved wear characteristics. The novel shape of the valve plug is a frustum of body of revolution of a curved known as a tractrix, a solid shape otherwise known as a peudosphere.

Wordin, J.J.

1989-11-07T23:59:59.000Z

11

Plug valve  

DOE Patents (OSTI)

An improved plug valve wherein a novel shape for the valve plug and valve chamber provide mating surfaces for improved wear characteristics. The novel shape of the valve plug is a frustum of a body of revolution of a curved known as a tractrix, a solid shape otherwise known as a peudosphere.

Wordin, John J. (Shelley, ID)

1989-01-01T23:59:59.000Z

12

Fast valve  

DOE Patents (OSTI)

A fast valve is disclosed that can close on the order of 7 milliseconds. It is closed by the force of a compressed air spring with the moving parts of the valve designed to be of very light weight and the valve gate being of wedge shaped with O-ring sealed faces to provide sealing contact without metal to metal contact. The combination of the O-ring seal and an air cushion create a soft final movement of the valve closure to prevent the fast air acting valve from having a harsh closing. 4 figs.

Van Dyke, W.J.

1992-04-07T23:59:59.000Z

13

Fast valve  

DOE Patents (OSTI)

A fast valve is disclosed that can close on the order of 7 milliseconds. It is closed by the force of a compressed air spring with the moving parts of the valve designed to be of very light weight and the valve gate being of wedge shaped with O-ring sealed faces to provide sealing contact without metal to metal contact. The combination of the O-ring seal and an air cushion create a soft final movement of the valve closure to prevent the fast air acting valve from having a harsh closing.

Van Dyke, William J. (Grafton, VA)

1992-01-01T23:59:59.000Z

14

Charging Algorithm Extends the Life of Lead-acid Batteries: 2001 R and D 100 Award Recipient  

DOE Green Energy (OSTI)

Fact sheet describing NREL's work with Recombination Technologies and Optima Batteries to develop a current interrupt charging algorithm to extend the deep life cycle of valve-regulated lead-acid batteries.

Pesaran, A.

2001-09-27T23:59:59.000Z

15

Lead  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

topic topic Lead 8:00 AM 8:15 AM Welcome and Webinar Rules Maloy 8:15 AM 8:30 AM NE Materials Introduction Lesica 8:30 AM 9:00 AM Advanced Reactor Concepts Sham 9:00 AM 9:30 AM SMR Corwin 9:30 AM 10:00 AM VHTR Materials Wright 10:00 AM 10:15 AM Coffee Break 10:15 AM 10:45 AM Fuel Cycle Research and Development Maloy 10:45 AM 11:15 AM LWR Sustainability Busby 11:15 AM 11:45 AM Summary/Discussion All Discussion topic - Development of Advanced ODS alloys Lead 8:00 AM 8:15 AM Welcome and Webinar Rules Maloy 8:15 AM 8:30 AM Advanced Materials for Fast Reactor Core Materials Maloy 8:30 AM 9:00 AM High Dose MA-957 testing Toloczko 9:00 AM 9:30 AM FCRD ODS Material Development- FCRD-NFA1 Hoelzer 9:30 AM 10:00 AM NFA Processing Odette 10:00 AM 10:15 AM Coffee Break 10:15 AM 10:45 AM 9Cr ODS Material Development Byun 10:45 AM

16

Piezoelectric valve  

DOE Patents (OSTI)

A motorized valve has a housing having an inlet and an outlet to be connected to a pipeline, a saddle connected with the housing, a turn plug having a rod, the turn plug cooperating with the saddle, and a drive for turning the valve body and formed as a piezoelectric drive, the piezoelectric drive including a piezoelectric generator of radially directed standing acoustic waves, which is connected with the housing and is connectable with a pulse current source, and a rotor operatively connected with the piezoelectric generator and kinematically connected with the rod of the turn plug so as to turn the turn plug when the rotor is actuated by the piezoelectric generator.

Petrenko, Serhiy Fedorovich

2013-01-15T23:59:59.000Z

17

Plasma valve  

DOE Patents (OSTI)

A plasma valve includes a confinement channel and primary anode and cathode disposed therein. An ignition cathode is disposed adjacent the primary cathode. Power supplies are joined to the cathodes and anode for rapidly igniting and maintaining a plasma in the channel for preventing leakage of atmospheric pressure through the channel.

Hershcovitch, Ady (Mount Sinai, NY); Sharma, Sushil (Hinsdale, IL); Noonan, John (Naperville, IL); Rotela, Elbio (Clarendon Hills, IL); Khounsary, Ali (Hinsdale, IL)

2003-01-01T23:59:59.000Z

18

Artificial Heart Valve Design  

E-Print Network (OSTI)

Artificial Heart Valve Design Your Chance to be a Biomedical Engineer #12;Circulatory System Video #12;What is a Heart Valve? · Heart Valve Video #12;#12;What Does a Heart Valve Do? · Maintain the one direction flow of blood through the heart · Heart valves allow blood to flow through in a forward direction

Provancher, William

19

Hydraulic servo control spool valve  

DOE Patents (OSTI)

A servo operated spool valve having a fixed sleeve and axially movable spool. The sleeve is machined in two halves to form a long, narrow tapered orifice slot across which a transverse wall of the spool is positioned. The axial position of the spool wall along the slot regulates the open orifice area with extreme precision.

Miller, Donald M. (Sunnyside, WA)

1983-01-01T23:59:59.000Z

20

Nuclear radiation actuated valve  

DOE Patents (OSTI)

A nuclear radiation actuated valve for a nuclear reactor. The valve has a valve first part (such as a valve rod with piston) and a valve second part (such as a valve tube surrounding the valve rod, with the valve tube having side slots surrounding the piston). Both valve parts have known nuclear radiation swelling characteristics. The valve's first part is positioned to receive nuclear radiation from the nuclear reactor's fuel region. The valve's second part is positioned so that its nuclear radiation induced swelling is different from that of the valve's first part. The valve's second part also is positioned so that the valve's first and second parts create a valve orifice which changes in size due to the different nuclear radiation caused swelling of the valve's first part compared to the valve's second part. The valve may be used in a nuclear reactor's core coolant system.

Christiansen, David W. (Kennewick, WA); Schively, Dixon P. (Richland, WA)

1985-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

Improved plug valve  

DOE Patents (OSTI)

An improved plug valve wherein a novel shape for the valve plug and valve chamber provide mating surfaces for improved wear characteristics is described. The novel shape of the valve plug is a frustum of a body of revolution of a curve known as a tractrix, a solid shape otherwise known as a pseudosphere.

Wordin, J.J.

1986-05-09T23:59:59.000Z

22

Rotary pneumatic valve  

DOE Patents (OSTI)

A rotary pneumatic valve which is thrust balanced and the pneumatic pressure developed produces only radial loads on the valve cylinder producing negligible resistance and thus minimal torque on the bearings of the valve. The valve is multiplexed such that at least two complete switching cycles occur for each revolution of the cylinder spindle. 4 figs.

Hardee, H.C.

1989-08-02T23:59:59.000Z

23

Vacuum breaker valve assembly  

DOE Patents (OSTI)

Breaker valve assemblies for a simplified boiling water nuclear reactor are described. The breaker valve assembly, in one form, includes a valve body and a breaker valve. The valve body includes an interior chamber, and an inlet passage extends from the chamber and through an inlet opening to facilitate transporting particles from outside of the valve body to the interior chamber. The breaker valve is positioned in the chamber and is configured to substantially seal the inlet opening. Particularly, the breaker valve includes a disk which is sized to cover the inlet opening. The disk is movably coupled to the valve body and is configured to move substantially concentrically with respect to the valve opening between a first position, where the disk completely covers the inlet opening, and a second position, where the disk does not completely cover the inlet opening.

Thompson, Jeffrey L. (San Jose, CA); Upton, Hubert Allen (Morgan Hill, CA)

1999-04-27T23:59:59.000Z

24

Vacuum breaker valve assembly  

Science Conference Proceedings (OSTI)

Breaker valve assemblies for a simplified boiling water nuclear reactor are described. The breaker valve assembly, in one form, includes a valve body and a breaker valve. The valve body includes an interior chamber, and an inlet passage extends from the chamber and through an inlet opening to facilitate transporting particles from outside of the valve body to the interior chamber. The breaker valve is positioned in the chamber and is configured to substantially seal the inlet opening. Particularly, the breaker valve includes a disk which is sized to cover the inlet opening. The disk is movably coupled to the valve body and is configured to move substantially concentrically with respect to the valve opening between a first position, where the disk completely covers the inlet opening, and a second position, where the disk does not completely cover the inlet opening. 1 fig.

Thompson, J.L.; Upton, H.A.

1999-04-27T23:59:59.000Z

25

Fuzzy Logic-Based State-of-Health Determination of Lead Acid Batteries Pritpal Singh  

E-Print Network (OSTI)

. A large valve-regulated lead acid (VRLA) battery bank provides sustained off-grid power for all 50 items shown above the distribution panel are physically separated from the user environment-DC converter and the VRLA batteries could all be significantly higher for a non- prototype system installed

Singh, Pritpal

26

Leading trends in environmental regulation that affect energy development. Final report  

DOE Green Energy (OSTI)

Major environmental issues that are likely to affect the implementation of energy technologies between now and the year 2000 are identified and assessed. The energy technologies specifically addressed are: oil recovery and processing; gas recovery and processing; coal liquefaction; coal gasification (surface); in situ coal gasification; direct coal combustion; advanced power systems; magnetohydrodynamics; surface oil shale retorting; true and modified in situ oil shale retorting; geothermal energy; biomass energy conversion; and nuclear power (fission). Environmental analyses of these technologies included, in addition to the main processing steps, the complete fuel cycle from resource extraction to end use. A comprehensive survey of the environmental community (including environmental groups, researchers, and regulatory agencies) was carried out in parallel with an analysis of the technologies to identify important future environmental issues. Each of the final 20 issues selected by the project staff has the following common attributes: consensus of the environmental community that the issue is important; it is a likely candidate for future regulatory action; it deals with a major environmental aspect of energy development. The analyses of the 20 major issues address their environmental problem areas, current regulatory status, and the impact of future regulations. These analyses are followed by a quantitative assessment of the impact on energy costs and nationwide pollutant emissions of possible future regulations. This is accomplished by employing the Strategic Environmental Assessment System (SEAS) for a subset of the 20 major issues. The report concludes with a more general discussion of the impact of environmental regulatory action on energy development.

Steele, R V; Attaway, L D; Christerson, J A; Kikel, D A; Kuebler, J D; Lupatkin, B M; Liu, C S; Meyer, R; Peyton, T O; Sussin, M H

1980-01-01T23:59:59.000Z

27

Multi-port valve  

DOE Patents (OSTI)

A multi-port valve is described for regulating, as a function of ambient air having varying wind velocity and wind direction in an open-field control area, the distribution of a fluid, particularly carbon dioxide (CO{sub 2}) gas, in a fluid distribution system so that the control area remains generally at an elevated fluid concentration or level of said fluid. The multi-port valve generally includes a multi-port housing having a plurality of outlets there through disposed in a first pattern of outlets and at least one second pattern of outlets, and a movable plate having a plurality of apertures extending there through disposed in a first pattern of apertures and at least one second pattern of apertures. The first pattern of apertures being alignable with the first pattern of outlets and the at least one second pattern of apertures being alignable with the second pattern of outlets. The first pattern of apertures has a predetermined orientation with the at least one second pattern of apertures. For an open-field control area subject to ambient wind having a low velocity from any direction, the movable plate is positioned to equally distribute the supply of fluid in a fluid distribution system to the open-field control area. For an open-field control area subject to ambient wind having a high velocity from a given direction, the movable plate is positioned to generally distribute a supply of fluid in a fluid distribution system to that portion of the open-field control area located upwind. 7 figs.

Lewin, K.F.

1997-04-15T23:59:59.000Z

28

Multi-port valve  

DOE Patents (OSTI)

A multi-port valve for regulating, as a function of ambient air having varying wind velocity and wind direction in an open-field control area, the distribution of a fluid, particularly carbon dioxide (CO.sub.2) gas, in a fluid distribution system so that the control area remains generally at an elevated fluid concentration or level of said fluid. The multi-port valve generally includes a multi-port housing having a plurality of outlets therethrough disposed in a first pattern of outlets and at least one second pattern of outlets, and a movable plate having a plurality of apertures extending therethrough disposed in a first pattern of apertures and at least one second pattern of apertures. The first pattern of apertures being alignable with the first pattern of outlets and the at least one second pattern of apertures being alignable with the second pattern of outlets. The first pattern of apertures has a predetermined orientation with the at least one second pattern of apertures. For an open-field control area subject to ambient wind having a low velocity from any direction, the movable plate is positioned to equally distribute the supply of fluid in a fluid distribution system to the open-field control area. For an open-field control area subject to ambient wind having a high velocity from a given direction, the movable plate is positioned to generally distribute a supply of fluid in a fluid distribution system to that portion of the open-field control area located upwind.

Lewin, Keith F. (Calverton, NY)

1997-04-15T23:59:59.000Z

29

By-pass valve  

Science Conference Proceedings (OSTI)

An improved by-pass valve (1) for use in an automobile exhaust system (Es) comprises an air inlet (7) connected to an air pump (Ap), first and second air outlets (15,23) respectively connected to first and second portions (P1,p2) of a catalytic converter (Cc) and a third outlet (33) through which air is dumped to atmosphere. Air is directed from the inlet to the first outlet when engine temperature is less than a predetermined value and from the inlet to the second outlet when engine temperature reaches the predetermined value. A first and normally closed valve (81) is intermediate the air inlet and the first and second outlets and a second and normally open valve (83) is intermediate the air inlet and the third outlet. The first valve is opened and the second valve closed when engine vacuum exceeds a predetermined level so air flows to either the first or second outlet. The second valve is reopened whenever the outlet to which air is directed is blocked so air is dumped to atmosphere. To accomplish this, the first valve is mounted on the first section (111) of a split shaft (109) and the second valve is mounted on a second shaft section (113). The sections are movable in unison to open the first valve, but the second section is movable relative to the first section when a blockage occurs to reopen the second valve.

Williamson, R.E.

1981-01-06T23:59:59.000Z

30

A rotary-airlock valve resists abrasive mixtures  

SciTech Connect

Hill and Griffith (H and G, Cincinnati, Ohio) is a leading supplier of custom-blended additives to founderies. Thousands of tons of clay and carbon blends such as bentonite, gilsonite and pulverized coal, pass through the company's rotary-airlock feeding system each month. H and G's original rotary valves had cylinders lined with chrome, and closed-end rotors with tips made from nickel-chromium alloys. These valves remained in service for a maximum of only three months each. During that time, the abrasive mixtures passing through the valves virtually eroded them, increasing tolerances and causing significant air leakage. The leaks caused the pneumatic line to plug up, reducing the velocity of the line below the minimum level needed to carry any material. To overcome the leakage, a second blower was added to the system. This unit supplied an additional 40 brake hp to the pneumatic-conveying line. With constant maintenance of the valve and the continuous operation of both blowers, H and G was able to extend the valve's life by nine months. After 20 years of trying valves with various configuration, H and G installed a Smoot Type 6 rotary-airlock valve in September of 1985. The new valve's internals were made from abrasion-resistant grades of NiHard and Stellite. This combination of alloys prolonged the active life of the valve by improving its abrasion resistance. During its first year, the Smoot valve did not break down, leak air or require use of the secondary blower. After its first year of service no wear was found on the valve's internal surfaces. Another mechanical analysis was performed in 1991, after five additional years of valve operation. The valve, which had now handled more than 250,000 tons of product, showed minimal wear. H and G's capital costs had been reduced from 25[cents]/ton to 3[cents]/ton by the new valve.

Not Available

1993-03-01T23:59:59.000Z

31

American Valve: Proposed Penalty (2010-CW-1411) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

American Valve: Proposed Penalty (2010-CW-1411) American Valve: Proposed Penalty (2010-CW-1411) American Valve: Proposed Penalty (2010-CW-1411) September 8, 2010 DOE alleged in a Notice of Proposed Civil Penalty that American Valve, Inc. failed to certify a variety of showerheads as compliant with the applicable water conservation standards. DOE regulations require a manufacturer (which includes importers) to submit reports certifying that its products have been tested and meet the applicable water conservation standards. This civil penalty notice advises the company of the potential penalties and DOE's administrative process, including the company's right to a hearing. American Valve: Proposed Penalty (2010-CW-1411) More Documents & Publications American Valve: Order (2010-CW-1411) Afeel: Proposed Penalty (2010-CW-07/1414)

32

Solid handling valve  

DOE Patents (OSTI)

The present invention is directed to a solids handling valve for use in combination with lock hoppers utilized for conveying pulverized coal to a coal gasifier. The valve comprises a fluid-actuated flow control piston disposed within a housing and provided with a tapered primary seal having a recessed seat on the housing and a radially expandable fluid-actuated secondary seal. The valve seals are highly resistive to corrosion, erosion and abrasion by the solids, liquids, and gases associated with the gasification process so as to minimize valve failure.

Williams, William R. (Morgantown, WV)

1979-01-01T23:59:59.000Z

33

Compact gate valve  

DOE Patents (OSTI)

This invention relates to a double-disc gate valve which is compact, comparatively simple to construct, and capable of maintaining high closing pressures on the valve discs with low frictional forces. The valve casing includes axially aligned ports. Mounted in the casing is a sealed chamber which is pivotable transversely of the axis of the ports. The chamber contains the levers for moving the valve discs axially, and an actuator for the levers. When an external drive means pivots the chamber to a position where the discs are between the ports and axially aligned therewith, the actuator for the levers is energized to move the discs into sealing engagement with the ports.

Bobo, Gerald E. (Knoxville, TN)

1977-01-01T23:59:59.000Z

34

Tubing drain valve  

SciTech Connect

A method is described for operating a valve means. The valve means comprises a tubular piston movable within a tubular member suitable for use in a borehole pipe string to open and close a port through the wall of the tubular member. The method comprises: biassing the valve means in its closed position; pressurizing the interior of the piston to a predetermined pressure to overcome the biassing closed force and to actuate the valve means to its open position; biassing the valve means to its open position; and actuating the valve means to its closed position by engaging a first arm of a dog pivotally mounted on the piston with an engaging means insertable through the interior of the tubular piston; moving the piston relative to the tubular member; rotating the dog about its pivot to bring a second arm of the dog into contact with a detent in the tubular member; and applying sufficient force to the first arm to continue rotating the dog about the pivot, while engaging the detent with the second arm of the dog, in order to overcome the biassing open force to actuate the valve means to its closed position. A tubing drain valve suitable for use in a borehole pipe string, comprising: a sub suitable for incorporating within a borehole pipe string; and a port between the interior and the exterior of the sub; and valve means for opening and closing the port.

Soderberg, P.B.

1987-02-24T23:59:59.000Z

35

Corrosion of valve metals  

DOE Green Energy (OSTI)

A general survey related to the corrosion of valve metals or film-forming metals. The way these metals corrode with some general examples is described. Valve metals form relatively perfect oxide films with little breakdown or leakage when anodized. (FS)

Draley, J.E.

1976-01-01T23:59:59.000Z

36

Valve for abrasive material  

DOE Patents (OSTI)

A ball valve assembly for controlling the flow of abrasive particulates including an enlarged section at the bore inlet and an enlarged section at the bore outlet. A refractory ceramic annular deflector is positioned in each of the enlarged sections, substantially extending the useful life of the valve.

Gardner, Harold S. (Turtle Creek, PA)

1982-01-01T23:59:59.000Z

37

Dissolution Actuated Valve Sampler  

Engineers at the Savannah River National Laboratory (SRNL) have invented a new device for retrieving liquid samples. The dissolution actuated valve sampler was developed to obtain pristine samples while operating without the assistance of a mast or ...

38

Flow metering valve  

DOE Patents (OSTI)

An apparatus for metering fluids at high pressures of about 20,000 to 60,000 psi is disclosed. The apparatus includes first and second plates which are positioned adjacent each other to form a valve chamber. The plates are made of materials which have substantially equal elastic properties. One plate has a planar surface area, and the other a recessed surface area defined by periphery and central lips. When the two plates are positioned in adjacent contacting relationship, a valve chamber is formed between the planar surface area and the recessed surface area. Fluid is introduced into the chamber and exits therefrom when a deformation occurs at positions where they no longer form a valve seat. This permits the metering of fluids at high pressures and at slow variable rates. Fluid then exits from the chamber until an applied external force becomes large enough to bring the valve seats back into contact.

Blaedel, Kenneth L. (Dublin, CA)

1985-01-01T23:59:59.000Z

39

Flow metering valve  

DOE Patents (OSTI)

An apparatus for metering fluids at high pressures of about 20,000 to 60,000 psi is disclosed. The apparatus includes first and second plates which are positioned adjacent each other to form a valve chamber. The plates are made of materials which have substantially equal elastic properties. One plate has a planar surface area, and the other a recessed surface area defined by periphery and central lips. When the two plates are positioned in adjacent contacting relationship, a valve chamber is formed between the planar surface area and the recessed surface area. Fluid is introduced into the chamber and exits therefrom when a deformation occurs at positions where they no longer form a valve seat. This permits the metering of fluids at high pressures and at slow variable rates. Fluid then exits from the chamber until an applied external force becomes large enough to bring the valve seats back into contact.

Blaedel, K.L.

1983-11-03T23:59:59.000Z

40

Valve for gas centrifuges  

DOE Patents (OSTI)

The invention is a pneumatically operated valve assembly for simultaneously (1) closing gas-transfer lines connected to a gas centrifuge or the like and (2) establishing a recycle path between two of the lines so closed. The valve assembly is especially designed to be compact, fast-acting, reliable, and comparatively inexpensive. It provides large reductions in capital costs for gas-centrifuge cascades.

Hahs, Charles A. (Oak Ridge, TN); Burbage, Charles H. (Oak Ridge, TN)

1984-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

Low noise control valve  

SciTech Connect

Noise is one of the problems associated with the use of any type of control valve in systems involving the flow of fluids. The advent of OSHA standards has prompted control valve manufacturers to design valves with special trim to lower the sound pressure level to meet these standards. However, these levels are in some cases too high, particularly when a valve must be located in or near an area where people are working at tasks requiring a high degree of concentration. Such locations are found around and near research devices and in laboratory-office areas. This paper describes a type of fluid control device presently being used at PPL as a bypass control valve in deionized water systems and designed to reduce sound pressure levels considerably below OSHA standards. Details of the design and construction of this constant pressure drop variable flow control valve are contained in the text and are shown in photographs and drawings. Test data taken are included. (auth)

Christie, R.S.

1975-01-01T23:59:59.000Z

42

Fast closing valve  

DOE Patents (OSTI)

A valve is provided for protecting the high vacuum of a particle accelera in the event of air leakage, wherein the valve provides an axially symmetrical passage to avoid disturbance of the partical beam during normal operation, and yet enables very rapid and tight closure of the beam-carrying pipe in the event of air leakage. The valve includes a ball member (30) which can rotate between a first position wherein a bore (32) in the member is aligned with the beam pipe, and a second position out of line with the pipe. A seal member (38) is flexibly sealed to the pipe, and has a seal end which can move tightly against the ball member after the bore has rotated out of line with the pipe, to thereby assure that the seal member does not retard rapid rotation of the ball valve member. The ball valve member can be rapidly rotated by a conductive arm (40) fixed to it and which is rotated by the discharge of a capacitor bank through coils (44, 45) located adjacent to the arm.

Hanson, Clark L. (Livermore, CA)

1984-01-10T23:59:59.000Z

43

REACTOR SYSTEM AND CONTROL VALVE  

DOE Patents (OSTI)

Valves have been developed for controlling the flow of gaseous fluid through a passage or conduit. The valves have particular application in the cooling systems of gas; cooled reactors. (R.J.S.)

Fortescue, P.; Rickard, C.; Rose, D.

1963-01-01T23:59:59.000Z

44

Hydrogen gas relief valve  

SciTech Connect

An improved battery stack design for an electrochemical system having at least one cell from which a gas is generated and an electrolyte in communication with the cell is described. The improved battery stack design features means for defining a substantially closed compartment for containing the battery cells and at least a portion of the electrolyte for the system, and means in association with the compartment means for selectively venting gas from the interior of the compartment means in response to the level of the electrolyte within the compartment means. The venting means includes a relief valve having a float member which is actuated in response to the level of the electrolyte within the compartment means. This float member is adapted to close the relief valve when the level of the electrolyte is above a predetermined level and open the relief valve when the level of electrolyte is below this predetermined level.

Whittlesey, Curtis C. (Birmingham, MI)

1985-01-01T23:59:59.000Z

45

Improved bellows sealed plug valve  

DOE Patents (OSTI)

It is an object of the present invention to provide a bellows sealed 1/4 turn valve wherein means are provided for translating linear motion to rotational motion between the bellows seal and the valve body. This paper details the features of the valve. 6 figs.

Dukas, S.J. Jr.

1989-10-29T23:59:59.000Z

46

Valve stem and packing assembly  

DOE Patents (OSTI)

A valve stem and packing assembly is provided in which a rotatable valve stem includes a first tractrix surface for sliding contact with a stem packing and also includes a second tractrix surface for sliding contact with a bonnet. Force is applied by means of a spring, gland flange, and gland on the stem packing so the stem packing seals to the valve stem and bonnet. This configuration serves to create and maintain a reliable seal between the stem packing and the valve stem. The bonnet includes a second complementary tractrix surface for contacting the second sliding tractrix surface, the combination serving as a journal bearing for the entire valve stem and packing assembly. The journal bearing so configured is known as a Schiele`s pivot. The Schiele`s pivot also serves to maintain proper alignment of the valve stem with respect to the bonnet. Vertical wear between the surfaces of the Schiele`s pivot is uniform at all points of contact between the second sliding tractrix surface and the second complementary tractrix surface of a bonnet. The valve stem is connected to a valve plug by means of a slip joint. The valve is opened and closed by rotating the valve stem. The slip joint compensates for wear on the Schiele`s pivot and on the valve plug. A ledge is provided on the valve bonnet for the retaining nut to bear against. The ledge prevents overtightening of the retaining nut and the resulting excessive friction between stem and stem packing.

Wordin, J.J.

1990-12-31T23:59:59.000Z

47

System for minimizing valve throttling losses in a steam turbine power plant  

SciTech Connect

A system which integrates the controls of a steam turbine power plant for minimizing power plant energy losses substantially caused by steam flow valve throttling is disclosed. The steam turbine power plant includes boiler pressure controls for controlling the boiler throttle pressure of a steam producing boiler and turbine-generator controls for positioning a plurality of turbine steam admission values to regulate the steam flow conducted through a steam turbine which governs the electrical energy generated by an electrical generator at a desired power generation level. The turbine-generator controls predetermine a plurality of valve position states to establish a predetermined valve grouping sequential positioning pattern for the steam admission valves to regulate steam flow through the steam turbine across the range of power generation, each predetermined state substantially corresponding to a minimum of valve throttling losses. The steam admission valves may be positioned at a present valve position state, which is other than one of the predetermined states, as a result of a change in desired power generation level. The disclosed system responds to this condition by governing the boiler pressure controls to adjust the boiler throttle pressure at a desired rate and in a direction to cause steam admission valves to be repositioned according to the sequential positioning pattern to a selected one of the predetermined efficient valve position states. The repositioning of the steam admission valves is performed by maintaining the generated energy substantially at the new desired power generation level.

Stern, L.P.; Johnson, S.J.

1979-12-18T23:59:59.000Z

48

Valve for cryogenic service  

DOE Patents (OSTI)

This patent relates to a valve for use with a liquefied gas at cryogenic temperatures in which a pair of joined knife edges are bellows controlled to contact an indium alloy seat in an annular slot when flow is to be stopped. The sealing alloy may be renewed by heating in situ. (auth)

Worwetz, H.A.

1975-09-02T23:59:59.000Z

49

Valve for gas centrifuges  

DOE Patents (OSTI)

The invention is pneumatically operated valve assembly for simulatenously (1) closing gas-transfer lines connected to a gas centrifuge or the like and (2) establishing a recycle path between two on the lines so closed. The value assembly is especially designed to be compact, fast-acting, reliable, and comparatively inexpensive. It provides large reductions in capital costs for gas-centrifuge cascades.

Hahs, C.A.; Rurbage, C.H.

1982-03-17T23:59:59.000Z

50

Valve selection handbook. Third edition  

Science Conference Proceedings (OSTI)

This book covers the fundamentals of value construction and application, and analyzes the different hazards and requirements of all types of industrial fluid flow situations. This book expands the coverage of pressure relief valves and rupture discs. It includes a new section on damping valve chatter, which is a serious problem in installations such as atomic power plants where valve chatter could have catastrophic consequences to the safety of the plant. There is also new information on performance of spring-loaded pressure relief valves and a closer examination of valve selection with respect to rupture discs and explosion venting.

Zappe, R.W. (ICI Australia Operations Pty. Ltd. (AU))

1991-01-01T23:59:59.000Z

51

Dual valve well pump installation  

SciTech Connect

A reciprocating electric motor-pump assembly for lifting well fluid on downstroke of the motor pump assembly, the pump including a barrel below the motor having dual combined inlet and outlet valve means at the lower end thereof, the pump piston moving in the barrel having annular grooves therearound to prevent differential pressure sticking, the electric cable supplying the electric motor being tubular to vent the pump and prevent vacuum or gas lock, there being a packer about the valve barrel separating the outlet valve means thereabove from the inlet valve means therebelow and a packer above the motor about a production tubing including an upper standing valve.

Holm, D. R.

1985-10-22T23:59:59.000Z

52

Multi-port valve assembly  

DOE Patents (OSTI)

A multi-port fluid valve apparatus is used to control the flow of fluids through a plurality of valves and includes a web, which preferably is a stainless steel endless belt. The belt has an aperture therethrough and is progressed, under motor drive and control, so that its aperture is moved from one valve mechanism to another. Each of the valve mechanisms comprises a pair of valve blocks which are held in fluid-tight relationship against the belt. Each valve block consists of a block having a bore through which the fluid flows, a first seal surrounding the bore and a second seal surrounding the first seal, with the distance between the first and second seals being greater than the size of the belt aperture. In order to open a valve, the motor progresses the belt aperture to where it is aligned with the two bores of a pair of valve blocks, such alignment permitting a flow of the fluid through the valve. The valve is closed by movement of the belt aperture and its replacement, within the pair of valve blocks, by a solid portion of the belt.

Guggenheim, S. Frederic (Teaneck, NJ)

1986-01-01T23:59:59.000Z

53

Throttled Valve Cavitation and Erosion  

E-Print Network (OSTI)

The submitted manuscipt has been authored by a contmrctor of the US. Government under contract No. DE-AC05-840R21400. Accordingly, the U. S. Government retains a nonexclusive royalty-free license to publish or reproduce the published form of the contribution, or aflow others to do so, for US. Government pupose & 1. Background In November of 1988, Brunswick plant maintenance personnel discovered significant localized erosion of the valve body of a Unit I Residual Heat Removal (RHR) valve, 1-El 1-F017B (the maintenance was being performed to repair the valve stem and back seat). 1 The F017B valv'e is a 20-inch Rockwell angle globe valve that has been historically used to throttle RHR flow. Excessive throttling of the valve had resulted in cavitation-induced erosion damage to areas immediately downstream of the seat. Subsequent investigation indicated that erosion of valve bodies was a generic concern for the other RHR valves used in the same service (FO17A on Unit I and F017A and F017B on Unit 2). Brunswick personnel expanded the investigation to include another set of RHR valves that had also been used in throttling service. The F024A and F024B valves (from both Units), which are used for Suppression Pool Cooling, were also found to have been damaged by

Don Casada; Don Casada

1991-01-01T23:59:59.000Z

54

Micro-valve pump light valve display  

DOE Patents (OSTI)

In this invention, a flat panel display incorporates a plurality of micro-pump light valves (MLV`s) to form pixels for recreating an image. Each MLV consists of a dielectric drop sandwiched between substrates, at least one of which is transparent, a holding electrode for maintaining the drop outside a viewing area, and a switching electrode from accelerating the drop from a location within the holding electrode to a location within the viewing area. The substrates may further define non-wetting surface areas to create potential energy barriers to assist in controlling movement of the drop. The forces acting on the drop are quadratic in nature to provide a nonlinear response for increased image contrast. A crossed electrode structure can be used to activate the pixels whereby a large flat panel display is formed without active driver components at each pixel.

Lee, Yee-Chun

1991-01-15T23:59:59.000Z

55

Micro-valve pump light valve display  

DOE Patents (OSTI)

In this invention, a flat panel display incorporates a plurality of micro-pump light valves (MLV's) to form pixels for recreating an image. Each MLV consists of a dielectric drop sandwiched between substrates, at least one of which is transparent, a holding electrode for maintaining the drop outside a viewing area, and a switching electrode from accelerating the drop from a location within the holding electrode to a location within the viewing area. The substrates may further define non-wetting surface areas to create potential energy barriers to assist in controlling movement of the drop. The forces acting on the drop are quadratic in nature to provide a nonlinear response for increased image contrast. A crossed electrode structure can be used to activate the pixels whereby a large flat panel display is formed without active driver components at each pixel.

Lee, Yee-Chun.

1991-01-15T23:59:59.000Z

56

Micro-valve pump light valve display  

DOE Patents (OSTI)

A flat panel display incorporates a plurality of micro-pump light valves (MLV's) to form pixels for recreating an image. Each MLV consists of a dielectric drop sandwiched between substrates, at least one of which is transparent, a holding electrode for maintaining the drop outside a viewing area, and a switching electrode from accelerating the drop from a location within the holding electrode to a location within the viewing area. The sustrates may further define non-wetting surface areas to create potential energy barriers to assist in controlling movement of the drop. The forces acting on the drop are quadratic in nature to provide a nonlinear response for increased image contrast. A crossed electrode structure can be used to activate the pixels whereby a large flat panel display is formed without active driver components at each pixel.

Yeechun Lee.

1993-01-19T23:59:59.000Z

57

System and method for individually testing valves in a steam turbine trip control system  

SciTech Connect

This patent describes a steam turbine power plant. It comprises: a steam generator; a steam turbine adapted to receive steam form the steam generator; a throttle valve for regulating the flow of the steam received by the steam turbine; and an electro-hydraulic trip control system for causing the throttle valve to close when a predetermined condition has been reached.

Hurley, J.D.

1992-07-28T23:59:59.000Z

58

Fast-acting valve and uses thereof  

SciTech Connect

A very fast acting valve capable of producing a very well-defined plug of gas suitable for filling a theta pinch vacuum vessel is given. The valve requires no springs, instead being stopped mainly by a nonlinear force. Thus, the valve is not subject to bouncing; and the ratio of the size of the valve housing to the size of the valve stem is smaller than it would be if springs were needed to stop the valve stem. Furthermore, the valve can be used for thousands of valve firings with no apparent valve damage.

Meyer, James A. (Espanola, NM)

1982-01-01T23:59:59.000Z

59

Performance Characteristics of an Isothermal Freeze Valve  

Science Conference Proceedings (OSTI)

This document discusses performance characteristics of an isothermal freeze valve. A freeze valve has been specified for draining the DWPF melter at the end of its lifetime. Two freeze valve designs have been evaluated on the Small Cylindrical Melter-2 (SCM-2). In order to size the DWPF freeze valve, the basic principles governing freeze valve behavior need to be identified and understood.

Hailey, A.E.

2001-08-22T23:59:59.000Z

60

Semi-active compressor valve  

SciTech Connect

A method and system for fine-tuning the motion of suction or discharge valves associated with cylinders of a reciprocating gas compressor, such as the large compressors used for natural gas transmission. The valve's primary driving force is conventional, but the valve also uses an electromagnetic coil to sense position of the plate (or other plugging element) and to provide an opposing force prior to impact.

Brun, Klaus (Helotes, TX); Gernentz, Ryan S. (San Antonio, TX)

2010-07-27T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

Semi-active compressor valve  

DOE Patents (OSTI)

A method and system for fine-tuning the motion of suction or discharge valves associated with cylinders of a reciprocating gas compressor, such as the large compressors used for natural gas transmission. The valve's primary driving force is conventional, but the valve also uses an electromagnetic coil to sense position of the plate (or other plugging element) and to provide an opposing force prior to impact.

Brun, Klaus (Helotes, TX); Gernentz, Ryan S. (San Antonio, TX)

2010-07-27T23:59:59.000Z

62

Streamline coal slurry letdown valve  

DOE Patents (OSTI)

A streamlined coal slurry letdown valve is featured which has a two-piece throat comprised of a seat and seat retainer. The two-piece design allows for easy assembly and disassembly of the valve. A novel cage holds the two-piece throat together during the high pressure letdown. The coal slurry letdown valve has long operating life as a result of its streamlined and erosion-resistance surfaces.

Platt, Robert J. (Dover, NJ); Shadbolt, Edward A. (Basking Ridge, NJ)

1983-01-01T23:59:59.000Z

63

Streamline coal slurry letdown valve  

DOE Patents (OSTI)

A streamlined coal slurry letdown valve is featured which has a two-piece throat comprised of a seat and seat retainer. The two-piece design allows for easy assembly and disassembly of the valve. A novel cage holds the two-piece throat together during the high pressure letdown. The coal slurry letdown valve has long operating life as a result of its streamlined and erosion-resistance surfaces. 5 figs.

Platt, R.J.; Shadbolt, E.A.

1983-11-08T23:59:59.000Z

64

Valve stem and packing assembly  

SciTech Connect

A valve stem and packing assembly is provided in which a rotatable valve stem includes a first tractrix surface for sliding contact with a stem packing and also includes a second tractrix surface for sliding contact with a bonnet. Force is applied by means of a spring, gland flange, and gland on the stem packing so the stem packing seals to the valve stem and bonnet. This configuration serves to create and maintain a reliable seal between the stem packing and the valve stem. The bonnet includes a second complementary tractrix surface for contacting the second sliding tractrix surface, the combination serving as a journal bearing for the entire valve stem and packing assembly. The journal bearing so configured is known as a Schiele's pivot. The Schiele's pivot also serves to maintain proper alignment of the valve stem with respect to the bonnet. Vertical wear between the surfaces of the Schiele's pivot is uniform at all points of contact between the second sliding tractrix surface and the second complementary tractrix surface of a bonnet. The valve stem is connected to a valve plug by means of a slip joint. The valve is opened and closed by rotating the valve stem. The slip joint compensates for wear on the Schiele's pivot and on the valve plug. A ledge is provided on the valve bonnet for the retaining nut to bear against. The ledge prevents overtightening of the retaining nut and the resulting excessive friction between stem and stem packing.

Wordin, John J. (Bingham County, ID)

1991-01-01T23:59:59.000Z

65

Valve stem and packing assembly  

DOE Patents (OSTI)

A valve stem and packing assembly is provided in which a rotatable valve stem includes a first tractrix surface for sliding contact with a stem packing and also includes a second tractrix surface for sliding contact with a bonnet. Force is applied by means of a spring, gland flange, and gland on the stem packing so the stem packing seals to the valve stem and bonnet. This configuration serves to create and maintain a reliable seal between the stem packing and the valve stem. The bonnet includes a second complementary tractrix surface for contacting the second sliding tractrix surface, the combination serving as a journal bearing for the entire valve stem and packing assembly. The journal bearing so configured is known as a Schiele's pivot. The Schiele's pivot also serves to maintain proper alignment of the valve stem with respect to the bonnet. Vertical wear between the surfaces of the Schiele's pivot is uniform at all points of contact between the second sliding tractrix surface and the second complementary tractrix surface of a bonnet. The valve stem is connected to a valve plug by means of a slip joint. The valve is opened and closed by rotating the valve stem. The slip joint compensates for wear on the Schiele's pivot and on the valve plug. A ledge is provided on the valve bonnet for the retaining nut to bear against. The ledge prevents over tightening of the retaining nut and the resulting excessive friction between stem and stem packing. 2 figures.

Wordin, J.J.

1991-09-03T23:59:59.000Z

66

Valve stem and packing assembly  

DOE Patents (OSTI)

A valve stem and packing assembly is provided in which a rotatable valve stem includes a first tractrix surface for sliding contact with a stem packing and also includes a second tractrix surface for sliding contact with a bonnet. Force is applied by means of a spring, gland flange, and gland on the stem packing so the stem packing seals to the valve stem and bonnet. This configuration serves to create and maintain a reliable seal between the stem packing and the valve stem. The bonnet includes a second complementary tractrix surface for contacting the second sliding tractrix surface, the combination serving as a journal bearing for the entire valve stem and packing assembly. The journal bearing so configured is known as a Schiele's pivot. The Schiele's pivot also serves to maintain proper alignment of the valve stem with respect to the bonnet. Vertical wear between the surfaces of the Schiele's pivot is uniform at all points of contact between the second sliding tractrix surface and the second complementary tractrix surface of a bonnet. The valve stem is connected to a valve plug by means of a slip joint. The valve is opened and closed by rotating the valve stem. The slip joint compensates for wear on the Schiele's pivot and on the valve plug. A ledge is provided on the valve bonnet for the retaining nut to bear against. The ledge prevents overtightening of the retaining nut and the resulting excessive friction between stem and stem packing.

Wordin, J.J.

1990-01-01T23:59:59.000Z

67

All metal valve structure for gas systems  

DOE Patents (OSTI)

A valve assembly with a resilient metal seat member is disclosed for providing a gas-tight seal in a gas handling system. The valve assembly also includes a valve element for sealing against the valve seat member; and an actuating means for operating the valve element. The valve seat member is a one-piece stainless steel ring having a central valve port and peripheral mounting flange, and an annular corrugation in between. A groove between the first and second ridges serves as a flexure zone during operation of the valve member and thus provides the seating pressure between the inner ridge or valve seat and the valve element. The outer annular ridge has a diameter less than said valve element to limit the seating motion of the valve element, preventing non-elastic deformation of the seat member.

Baker, Ray W. (Hamilton, OH); Pawlak, Donald A. (Centerville, OH); Ramey, Alford J. (Miamisburg, OH)

1984-11-13T23:59:59.000Z

68

Advanced lead-acid batteries for utility applications  

SciTech Connect

During 1990, Sandia National Laboratories initiated an advanced lead-acid battery development program supported by the US Department of Energy's Office of Energy Management. The goal is to develop a low maintenance, cost effective battery by the mid- to late 1990's that is tailored to a variety of electric utility applications. Several parallel activities are being pursued to achieve this goal. One activity seeks to quantify the economic benefits of battery storage for specific cases in candidate utility systems and identify opportunities for field demonstration of battery systems at electric utility and utility customer sites. Such demonstrations will not only generate valuable operating experience data, but will also help in building user confidence in battery storage systems. Other activities concentrate on cell- and battery-level research and development aimed at overcoming shortcomings in existing technologies, such as Valve-Regulated Lead-Acid (VRLA), or, sealed lead-acid batteries.

Akhil, A. (Sandia National Labs., Albuquerque, NM (USA)); Landgrebe, A. (USDOE, Washington, DC (USA))

1991-01-01T23:59:59.000Z

69

Advanced lead-acid batteries for utility applications  

SciTech Connect

During 1990, Sandia National Laboratories initiated an advanced lead-acid battery development program supported by the US Department of Energy's Office of Energy Management. The goal is to develop a low maintenance, cost effective battery by the mid- to late 1990's that is tailored to a variety of electric utility applications. Several parallel activities are being pursued to achieve this goal. One activity seeks to quantify the economic benefits of battery storage for specific cases in candidate utility systems and identify opportunities for field demonstration of battery systems at electric utility and utility customer sites. Such demonstrations will not only generate valuable operating experience data, but will also help in building user confidence in battery storage systems. Other activities concentrate on cell- and battery-level research and development aimed at overcoming shortcomings in existing technologies, such as Valve-Regulated Lead-Acid (VRLA), or, sealed lead-acid batteries.

Akhil, A. (Sandia National Labs., Albuquerque, NM (USA)); Landgrebe, A. (USDOE, Washington, DC (USA))

1991-01-01T23:59:59.000Z

70

Heart Valve Lesson Plan Biomedical Engineering  

E-Print Network (OSTI)

Heart Valve Lesson Plan Biomedical Engineering Objective · Introduce students to biomedical Learning Outcomes · Students will understand the role and function of heart valves. · Students will learn does a heart valve work? · Why do we need to replace heart valves? Time Required (Itemized) · Lecture

Provancher, William

71

July 24, 2009, Visiting Speakers Program Panel Discussion - Governance and Regulations: U. S. to Lead or Lag in the 21st Century - Companion Book  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Hosted by the Hosted by the U.S. Department of Energy Office of Health, Safety and Security and the National Academy of Public Administration July 24, 2009 Washington, DC Governance and Regulation: U.S. to Lead or Lag in the 21 st Century Visiting Speakers Program Event The National Academy of Public Administration is a non-profit, independent coalition of top public management and organizational leaders who tackle the nation's most critical and complex challenges. With a network of more than 600 distinguished Fellows and an experienced professional staff, the Academy is uniquely qualified and trusted across government to provide objective advice and practical solutions based on systematic research and expert analysis. Established in 1967 and chartered by Congress, the Academy continues to make a positive impact by helping federal,

72

Report of the Laws and Regulations (L&R) Committee  

Science Conference Proceedings (OSTI)

... BOV Bag on Valve MON Motor Octane Number ... GM General Motors UPLR Uniform Packaging and Labeling Regulation ... s) for use as an engine fuel ...

2013-12-27T23:59:59.000Z

73

Liquid Lead-Bismuth Materials Test Loop Valentina Tcharnotskaia, Curtt Ammerman, Timothy Darling, Joe King,  

E-Print Network (OSTI)

is connected to the main loop piping via a globe valve. This valve can regulate the flow through the gas the gas injection and regulation system. We will calibrate the Magnetic Flow Meter. Next heating rates.84GPM. Liquid LBE flow can be activated by a mechanical sump pump or by natural convection. In order

McDonald, Kirk

74

LEADING WITH LEADING INDICATORS  

SciTech Connect

This paper documents Fluor Hanford's use of Leading Indicators, management leadership, and statistical methodology in order to improve safe performance of work. By applying these methods, Fluor Hanford achieved a significant reduction in injury rates in 2003 and 2004, and the improvement continues today. The integration of data, leadership, and teamwork pays off with improved safety performance and credibility with the customer. The use of Statistical Process Control, Pareto Charts, and Systems Thinking and their effect on management decisions and employee involvement are discussed. Included are practical examples of choosing leading indicators. A statistically based color coded dashboard presentation system methodology is provided. These tools, management theories and methods, coupled with involved leadership and employee efforts, directly led to significant improvements in worker safety and health, and environmental protection and restoration at one of the nation's largest nuclear cleanup sites.

PREVETTE, S.S.

2005-01-27T23:59:59.000Z

75

Noninvasive valve monitor using alternating electromagnetic field  

SciTech Connect

One or more electrical coils are carefully located on the outside of a valve body. An alternating current passing through the coil(s) results in an alternating electromagnetic field being transmitted into the valve body and valve internals. The electromagnetic field varies in intensity and polarity in the valve. As the position of a valve internal part is changed, the electromagnetic field throughout the valve body and its internals is altered. A passive receiver coil carefully located on the outside of the valve body detects the intensity of the electromagnetic field at that location as an induced electrical voltage in the coil. With the change in position of the valve internal part, there is a corresponding change in the induced voltage as a result of the alteration in the alternating electromagnetic field at that location. Changes in the voltage provide an indication of the position and motion of valve internals.

Eissenberg, David M. (Oak Ridge, TN); Haynes, Howard D. (Knoxville, TN); Casada, Donald A. (Knoxville, TN)

1993-01-01T23:59:59.000Z

76

Proceedings of the symposium on inservice testing of pumps and valves  

Science Conference Proceedings (OSTI)

The 1990 Symposium on Inservice Testing of Pumps and Valves, jointly sponsored by the Board on Nuclear Codes and Standards of the American Society of Mechanical Engineers and by the Nuclear Regulatory Commission, provided a forum for the discussion of current programs and methods for inservice testing at nuclear power plants. The symposium also provided an opportunity to discuss the need to improve inservice testing in order to ensure the reliable performance of pumps and valves. The participation of industry representatives, regulators, and consultants resulted in the discussion of a broad spectrum of ideas and perspectives regarding the improvement of inservice testing of pumps and valves at nuclear power plants.

Not Available

1990-10-01T23:59:59.000Z

77

Lost-motion valve actuator  

SciTech Connect

A lost-motion valve actuator is described for a bore closure valve employed in a well bore, comprising: operating connector means adapted to move the bore closure valve between open and closed positions through longitudinal movement of the operating connector means. The operating connector means comprises an operating connector and a connector insert defining a recess therebetween; locking dog means comprising at least one locking dog received in the recess and spring biasing means adapted to urge at least one locking dog radially inwardly; and mandrel means slidably received within the operating connector means and including dog slot means associated therewith. The dog slot means comprises an annular slot on the exterior of the mandrel means adapted to lockingly receive at least one inwardly biased locking dog when proximate thereto, whereby longitudinal movement of the mandrel means is transmitted to the operating connector means.

Burris, W.J. III; Ringgenberg, P.D.

1987-04-07T23:59:59.000Z

78

Valve for controlling flow of cryogenic fluid  

DOE Patents (OSTI)

A valve is provided for accurately controlling the flow of cryogenic fluids such as liquid nitrogen. The valve comprises a combination of disc and needle valves affixed to a valve stem in such a manner that the disc and needle are free to rotate about the stem, but are constrained in lateral and vertical movements. This arrangement provides accurate and precise fluid flow control and positive fluid isolation.

Knapp, P.A.

1995-12-31T23:59:59.000Z

79

Microfluidic Polymer Valves - Energy Innovation Portal  

No electrical power is dissipated into the fluid during valve operation. The microvalve dielectric strength is comparable to glass.

80

Experiences and Attributes of Successful Valve Teams  

Science Conference Proceedings (OSTI)

Recently, a number of utilities have found that an effective approach to improve valve performance and reliability is to develop specialized cross-disciplinary teams that have the responsibility for a specific valve or valve types throughout the plant or utility. This report describes the composition, size, and functions of the different types of valve teams studied and provides a myriad of success stories and lessons learned regarding their employment throughout the nuclear power industry.

2000-12-20T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

TWO-WAY FREEZE VALVE  

DOE Patents (OSTI)

A valve for closing off the flow of radioactive and corrosive gases and liquids or mixtures thereof and forming a leak tight barrier is described. This valve has no mechanical moving parts which would require design to close tolerances and retention of the usual seal tighthess. Instead, there is provided a cavity in which a fusible metal is contained. Heating and cooling are provided to exercise control over the state of the metal. Baffle chambers are utilized to separate the molten fusible metal from the gas or liquid which is being passed through and return the molten metal to its cavity.

Lantz, K.D.; Clark, P.M.

1960-01-01T23:59:59.000Z

82

Valve for fuel pin loading system  

DOE Patents (OSTI)

A cyclone valve surrounds a wall opening through which cladding is projected. An axial valve inlet surrounds the cladding. Air is drawn through the inlet by a cyclone stream within the valve. An inflatable seal is included to physically engage a fuel pin subassembly during loading of fuel pellets.

Christiansen, D.W.

1984-01-01T23:59:59.000Z

83

Valve test program: response to TMI  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute (EPRI) pressurized-water reactor (PWR) safety and relief valve test program was speedily organized to assess valve operability after a pressurizer relief valve malfunctioned at Three Mile Island (TMI). Comprehensive full-scale testing at several facilities validated the basic designs in use today. 2 figures.

Lihach, N.; Bilanin, W.; Carey, J.

1983-05-01T23:59:59.000Z

84

Valve for fuel pin loading system  

DOE Patents (OSTI)

A cyclone valve surrounds a wall opening through which cladding is projected. An axial valve inlet surrounds the cladding. Air is drawn through the inlet by a cyclone stream within the valve. An inflatable seal is included to physically engage a fuel pin subassembly during loading of fuel pellets.

Christiansen, David W. (Kennewick, WA)

1985-01-01T23:59:59.000Z

85

Valve assembly for inflatable packer  

Science Conference Proceedings (OSTI)

This patent describes a valve assembly for controlling the flow of fluid from within casing into a bladder element of an inflatable packer for use in a wellbore. The bladder element has bladder port means. The valve assembly is mountable within a single cavity in a body member in the wall of casing or a casing coupling. The body member has casing port means communicating with the cavity for communicating casing fluid to the bladder port means so that the casing fluid can flow through the bladder port means to inflate the bladder element and the body member having overpressure port means communicating with the cavity for communicating part of the fluid flowing into the bladder element back to the cavity and to the valve assembly. The valve assembly comprises: control piston means movably mounted within the cavity, restraint means for insuring that the control piston means initially moves only when the pressure of the casing fluid reaches a predetermined level, and closing piston means movably mounted within the cavity and responsive to the pressure of the fluid in the bladder element, and the control piston means and the closing piston movable about stem means disposed in the cavity.

Stringfellow, W.D.

1987-12-08T23:59:59.000Z

86

Valve Application, Maintenance, and Repair Guide  

Science Conference Proceedings (OSTI)

The Valve Application, Maintenance, and Repair Guide is a two-volume series that provides a generic overview of valve application, selection, maintenance, and repair. Volume 1 of the series is a comprehensive reference on the application and use of valves that provides guidance on the selection of specific types of valves on the basis of functional and system requirements. This document is based on an earlier EPRI document (NP-6516, Guide for the Application and Use of Valves in Power Plant Systems). Ext...

1999-05-07T23:59:59.000Z

87

Change-over valve for air suspension  

Science Conference Proceedings (OSTI)

A change-over valve is described for an air suspension interposed between a main air chamber formed to surround a shock absorber provided with a piston rod and an auxiliary air chamber, comprising: a valve base having a first hole through which the piston rod extends and a second hole into which a valve body is inserted; the valve body disposed in the second hole; a holder disposed in the second hole; and means removably fixed to the piston rod extending through the first hole to connect the piston rod with the valve base while preventing the holder from falling out.

Buma, S.

1987-04-28T23:59:59.000Z

88

Workshop on gate valve pressure locking and thermal binding  

SciTech Connect

The purpose of the Workshop on Gate Valve Pressure Locking and Thermal Binding was to discuss pressure locking and thermal binding issues that could lead to inoperable gate valves in both boiling water and pressurized water reactors. The goal was to foster exchange of information to develop the technical bases to understand the phenomena, identify the components that are susceptible, discuss actual events, discuss the safety significance, and illustrate known corrective actions that can prevent or limit the occurrence of pressure locking or thermal binding. The presentations were structured to cover U.S. Nuclear Regulatory Commission staff evaluation of operating experience and planned regulatory activity; industry discussions of specific events, including foreign experience, and efforts to determine causes and alleviate the affects; and valve vendor experience and recommended corrective action. The discussions indicated that identifying valves susceptible to pressure locking and thermal binding was a complex process involving knowledge of components, systems, and plant operations. The corrective action options are varied and straightforward.

Brown, E.J.

1995-07-01T23:59:59.000Z

89

The development of advanced lead-acid batteries for utility applications  

DOE Green Energy (OSTI)

Technical advances in lead-acid battery design have created new opportunities for battery systems in telecommunications, computer backup power and vehicle propulsion power. Now the lead-acid battery has the opportunity to become a major element in the mix of technologies used by electric utilities for several power quality and energy and resource management functions within the network. Since their introduction into industrial applications, Valve Regulated Lead-Acid (VRLA) batteries have received widespread acceptance and use in critical telecommunications and computer installations, and have developed over 10 years of reliable operational history. As further enhancements in performance, reliability and manufacturing processes are made, these VRLA batteries are expanding the role of battery-based energy storage systems within utility companies portfolios. This paper discusses the rationale and process of designing, optimizing and testing VRLA batteries for specific utility application requirements.

Szymborski, J. [GNB Industrial Battery Co., Lombard, IL (United States); Jungst, R.G. [Sandia National Labs., Albuquerque, NM (United States)

1993-10-01T23:59:59.000Z

90

A LARGE BAKEABLE VACUUM VALVE  

SciTech Connect

The development and design of a large bakeable valve based on a unique seat arrangement and a novel motion seal are described. The seat sealing is accomplished through the use of high pressure fluid actuation of an annular pinch gasket. Experimental data on seat closure performance, and the specific design features to achieve successful closures, are presented. The bakeable motion seal utilizes a stainless steel bellows sleeving over an inner concentric actuating shaft. This shaft is bent at 90 deg to the axis of rotation and is free to rotate relative to the bellows. There is no apparent size limitation to this type of actuation. The design of a 10-inch gate valve utilizing these principles is described. (auth)

Batzer, T.H.

1959-08-01T23:59:59.000Z

91

Advanced Lead Acid Battery Consortium | Open Energy Information  

Open Energy Info (EERE)

Lead Acid Battery Consortium Lead Acid Battery Consortium Jump to: navigation, search Name Advanced Lead-Acid Battery Consortium Place Durham, North Carolina Zip 27713 Sector Vehicles Product The ALABC is a research consortium of more than 50 battery-related companies that was originally formed in 1992 to advance the capabilities of the valve-regulated lead acid battery to help electric vehicles become a reality. Coordinates 45.396265°, -122.755099° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":45.396265,"lon":-122.755099,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

92

International Steam Turbine Valve Metallurgy Guide  

Science Conference Proceedings (OSTI)

This report reviews the state of the art in materials usage for steam turbine valves manufactured and used in Europe and looks at materials options for the higher-temperature applications now being considered for advanced high-efficiency power plants. The emphasis is on valves for extreme service conditions (high temperatures, pressures, and flow rates), of which bypass valves represent a good example. Some consideration is also given to degradation and failure mechanisms. In focusing on practices outsid...

2011-09-27T23:59:59.000Z

93

Propellant actuated nuclear reactor steam depressurization valve  

DOE Patents (OSTI)

A nuclear fission reactor combined with a propellant actuated depressurization and/or water injection valve is disclosed. The depressurization valve releases pressure from a water cooled, steam producing nuclear reactor when required to insure the safety of the reactor. Depressurization of the reactor pressure vessel enables gravity feeding of supplementary coolant water through the water injection valve to the reactor pressure vessel to prevent damage to the fuel core.

Ehrke, Alan C. (San Jose, CA); Knepp, John B. (San Jose, CA); Skoda, George I. (Santa Clara, CA)

1992-01-01T23:59:59.000Z

94

Improved valve and dash-pot assembly  

DOE Patents (OSTI)

A dash-pot valve comprises a cylinder submerged in the fluid of a housing and have a piston attached to a plunger projecting into the path of closing movement of a pivotal valve member. A vortex chamber in said cylinder is provided with targentially directed inlets to generate vortex flow upon retraction of said plunger and effect increasing resistance against said piston to progressively retard the closing rate of said valve member toward its seat.

Chang, S.C.

1985-04-23T23:59:59.000Z

95

Valve and dash-pot assembly  

DOE Patents (OSTI)

A dash-pot valve comprising a cylinder submerged in the fluid of a housing and having a piston attached to a plunger projecting into the path of closing movement of a pivotal valve member. A vortex chamber in said cylinder is provided with tangentially directed inlets to generate vortex flow upon retraction of said plunger and effect increasing resistance against said piston to progressively retard the closing rate of said valve member toward its seat.

Chang, Shih-Chih (Richland, WA)

1986-01-01T23:59:59.000Z

96

IMPROVEMENTS IN OR RELATING TO VALVED DUCTING  

SciTech Connect

A coaxial valved ducting is designed for fluid flow to and from a heat exchanger. The ducting comprises an inner pipe for flow of hot fluid, an outer pipe providing an annular passage for the countercurrent flow of cool fluid, a butterfly valve in the inner pipe, peripherally spaced longitudinal ribs joining the two pipes in the region of the valve, an extension of the outer pipe, and a butterfly or poppet valve associated with the extension. the inner pipe communicates with the heat exchanger by means of an extension through the outer pipe wall. (D.L.C.)

Blackburn, G.; Long, E.

1962-05-30T23:59:59.000Z

97

All-metal valve structure for gas systems  

DOE Patents (OSTI)

A valve assembly with a resilient metal seat member is disclosed for providing a gas-tight seal in a gas handling system. The valve assembly also includes a valve element for sealing against the valve seat member; and an actuating means for operating the valve element. The valve seat member is a one-piece stainless steel ring having a central valve port and peripheral mounting flange, and an annular corrugation in between. A groove between the first and second ridges serves as a flexure zone during operation of the valve member and thus provides the seating pressure between the inner ridge or valve seat and the valve element. The outer annular ridge has a diameter less than said valve element to limit the seating motion of the valve element, preventing non-elastic deformation of the seat member.

Baker, R.W.; Pawlak, D.A.; Ramey, A.J.

1982-06-10T23:59:59.000Z

98

Hydraulic engine valve actuation system including independent feedback control  

DOE Patents (OSTI)

A hydraulic valve actuation assembly may include a housing, a piston, a supply control valve, a closing control valve, and an opening control valve. The housing may define a first fluid chamber, a second fluid chamber, and a third fluid chamber. The piston may be axially secured to an engine valve and located within the first, second and third fluid chambers. The supply control valve may control a hydraulic fluid supply to the piston. The closing control valve may be located between the supply control valve and the second fluid chamber and may control fluid flow from the second fluid chamber to the supply control valve. The opening control valve may be located between the supply control valve and the second fluid chamber and may control fluid flow from the supply control valve to the second fluid chamber.

Marriott, Craig D

2013-06-04T23:59:59.000Z

99

Method and apparatus for monitoring motor operated valve motor ...  

A method and apparatus are provided for monitoring a motor operated valve during the brief period when the valve seats and the torque switch trips to deenergize the ...

100

High precision high flow range control valve  

DOE Patents (OSTI)

A fluid control valve is described having a valve housing having first and second valve housing openings for the ingress and egress of fluid through the control valve. Disposed within a void formed by the control valve is a sleeve having at least one sleeve opening to permit the flow of fluid therethrough. A flow restricter travels within the sleeve to progressively block off the sleeve opening and thereby control flow. A fluid passageway is formed between the first valve housing opening and the outer surface of the sleeve. A second fluid passageway is formed between the inside of the sleeve and the second valve housing opening. Neither fluid passageway contains more than one 90.degree. turn. In the preferred embodiment only one of the two fluid passageways contains a 90.degree. turn. In another embodiment, the control valve housing is bifurcated by a control surface having control surface opening disposed therethrough. A flow restricter is in slidable contact with the control surface to restrict flow of fluid through the control surface openings.

McCray, John A. (Idaho Falls, ID)

1999-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

Vertical pump with free floating check valve  

DOE Patents (OSTI)

A vertical pump with a bottom discharge having a free floating check valve isposed in the outlet plenum thereof. The free floating check valve comprises a spherical member with a hemispherical cage-like member attached thereto which is capable of allowing forward or reverse flow under appropriate conditions while preventing reverse flow under inappropriate conditions.

Lindsay, Malcolm (O' Hara Township, Allegheny County, PA)

1980-01-01T23:59:59.000Z

102

Advanced lead acid battery development project. Final report  

Science Conference Proceedings (OSTI)

This project involved laboratory and road testing of the Horizon (registered) advanced lead acid batteries produced by Electrosource, Inc. A variety of electric vehicles in the fleet operated by the Sacramento Municipal Utility District and McClellan Air Force Base were used for road tests. The project was sponsored by the Defense Advanced Research Projects Agency under RA 93-23 entitled Electric Vehicle Technology and Infrastructure. The Horizon battery is a valve regulated, or sealed, lead acid battery produced in a variety of sizes and performance levels. During the project, several design and process improvements on the Horizon battery resulted in a production battery with a specific energy approaching 45 watt-hours per kilogram (Whr/kg) capable of delivering a peak current of 450 amps. The 12 volt, 95 amp-hour (Ahr) Horizon battery, model number 12N95, was placed into service in seven (7) test vehicles, including sedans, prototype lightweight electric vehicles, and passenger vans. Over 20,000 miles have been driven to date on vehicles powered by the Horizon battery. Road test results indicate that when the battery pack is used with a compatible charger and charge management system, noticeably improved acceleration characteristics are evident, and the vehicles provide a useful range almost 20% greater than with conventional lead-acid batteries.

NONE

1997-02-01T23:59:59.000Z

103

Condition monitoring of motor-operated valves in nuclear power plants Pierre Granjon  

E-Print Network (OSTI)

to the valve and increases radiation exposure of operators, leading to long overhaul outage and high techniques rely on the measurement of an internal mechanical quantity and require the presence of human of any internal MOV quantity. In this article, the instantaneous active power absorbed by the induction

Paris-Sud XI, Université de

104

Valve for controlling solids flow  

DOE Patents (OSTI)

A valve for controlling the flow of solids comprises a vessel having an overflow point, an inlet line for discharging solids into the vessel positioned within the vessel such that the inlet line's discharge point is lower than the vessel's overflow point, and apparatus for introducing a fluidizing fluid into the vessel. The fluidizing fluid fluidizes the solids within the vessel so that they overflow at the vessel's overflow point. For the removal of nuclear waste product the vessel may be placed within a sealed container having a bottom connected transport line for transporting the solids to storage or other sites. The rate of solids flow is controlled by the flow rate of the fluidizing fluid and by V-notch weirs of different sizes spaced about the top of the vessel.

Staiger, M. Daniel (Idaho Falls, ID)

1985-01-01T23:59:59.000Z

105

DISCHARGE VALVE FOR GRANULAR MATERIAL  

DOE Patents (OSTI)

A gravity-red dispenser or valve is designed for discharging the fueled spherical elements used in a pebble bed reactor. The dispenser consists of an axially movable tube terminating under a hood having side walls with openings. When the tube is moved so that its top edge is above the tops of the side openings the elements will not flow. As the tube is moved downwardly, the elements flow into the hood through the side openings and over the top edge into the tube at an increasing rate as the tube is lowered further. The tube is spaced at all times from the hood and side walls a distance greater than the diameter of the largest element to prevent damaging of the elements when the dispenser is closed to flow. (AEC)

Stoughton, L.D.; Robinson, S.T.

1962-05-15T23:59:59.000Z

106

Engine Valve Actuation For Combustion Enhancement  

DOE Patents (OSTI)

A combustion chamber valve, such as an intake valve or an exhaust valve, is briefly opened during the compression and/or power strokes of a 4-stroke combustion cycle in an internal combustion engine (in particular, a diesel or CI engine). The brief opening may (1) enhance mixing withing the combustion chamber, allowing more complete oxidation of particulates to decrease engine emissions; and/or may (2) delay ignition until a more desirable time, potentially allowing a means of timing ignition in otherwise difficult-to-control conditions, e.g., in HCCI (Homogeneous Charge Compression Ignition) conditions.

Reitz, Rolf Deneys (Madison, WI); Rutland, Christopher J. (Madison, WI); Jhavar, Rahul (Madison, WI)

2004-05-18T23:59:59.000Z

107

Engine valve actuation for combustion enhancement  

DOE Patents (OSTI)

A combustion chamber valve, such as an intake valve or an exhaust valve, is briefly opened during the compression and/or power strokes of a 4-strokes combustion cycle in an internal combustion engine (in particular, a diesel or CI engine). The brief opening may (1) enhance mixing withing the combustion chamber, allowing more complete oxidation of particulates to decrease engine emissions; and/or may (2) delay ignition until a more desirable time, potentially allowing a means of timing ignition in otherwise difficult-to-control conditions, e.g., in HCCI (Homogeneous Charge Compression Ignition) conditions.

Reitz, Rolf Deneys (Madison, WI); Rutland, Christopher J. (Madison, WI); Jhavar, Rahul (Madison, WI)

2008-03-04T23:59:59.000Z

108

Method and apparatus for monitoring motor operated valve motor output torque and power at valve seating  

DOE Patents (OSTI)

A method and apparatus are provided for monitoring a motor operated valve during the brief period when the valve seats and the torque switch trips to deenergize the valve motor. The method uses voltage measurements on the load side of a deenergizing switch that opens to deenergize the motor to determine, among other things, final motor rotational speed and the decelerating torque at motor deenergization.

Casada, Donald A. (Oak Ridge, TN)

1996-01-01T23:59:59.000Z

109

Method and apparatus for monitoring motor operated valve motor output torque and power at valve seating  

DOE Patents (OSTI)

A method and apparatus are provided for monitoring a motor operated valve during the brief period when the valve seats and the torque switch trips to deenergize the valve motor. The method uses voltage measurements on the load side of a deenergizing switch that opens to deenergize the motor to determine, among other things, final motor rotational speed and the decelerating torque at motor deenergization. 14 figs.

Casada, D.A.

1996-01-16T23:59:59.000Z

110

Engineering Technical Training Modules - Throttle Valves 1.0  

Science Conference Proceedings (OSTI)

The purpose of this training module is to provide an understanding of specifying throttle valves in a nuclear power plant. The module provides the student with an understanding of the different types of throttle valves, how to select a throttle valve, understand the flow characteristics of different throttle valves, and understanding negative characteristics that can occur when the wrong valve is chosen for different applications. Prior to using this module, the student should understand the fundamental...

2011-06-29T23:59:59.000Z

111

EPRI-Marshall Electric Motor-Operated Valve (Block Valve) Interim Test Data Report  

Science Conference Proceedings (OSTI)

At the request of participating PWR utilities, an overall program was developed at EPRI for the full-scale testing of a representative set of primary-system safety and relief valves. The program was to assist the PWR utilities in meeting NUREG 0737, Item II.D.1.A requirements. Although not a formal part of the program, some block valve operability data were also obtained during the relief valve testing performed at Marshall Steam Station in Terrell, North Carolina. A total of seven block valve designs we...

1982-07-01T23:59:59.000Z

112

Valve studies: Hydrogen fluoride monitoring of UF{sub 6} cylinder valves  

Science Conference Proceedings (OSTI)

Uranium hexafluoride (UF{sub 6}) cylinder valves have, like the cylinders, been in use and/or storage for periods ranging from 15 to 44 years. Visual inspection of the cylinders has shown that the extent of corrosion and the overall cylinder condition varies widely throughout the storage yards. One area of concern is the integrity of the cylinder valves. Visual inspection has found deposits which have been identified as radioactive material on or near the valves. These deposits suggest leakage of UF{sub 6} and may indicate valve degradation; however, these deposits may simply be residual material from cylinder filling operations.

Leedy, R.R.; Ellis, A.R.; Hoffmann, D.P.; Marsh, G.C. [and others

1996-08-01T23:59:59.000Z

113

Method for valve seating control for an electro-hydraulic engine valve  

DOE Patents (OSTI)

Valve lift in an internal combustion engine is controlled by an electro-hydraulic actuation mechanism including a selectively actuable hydraulic feedback circuit.

Sun, Zongxuan (Plymouth, MN)

2011-01-11T23:59:59.000Z

114

Frostless heat pump having thermal expansion valves  

DOE Patents (OSTI)

A heat pump system having an operable relationship for transferring heat between an exterior atmosphere and an interior atmosphere via a fluid refrigerant and further having a compressor, an interior heat exchanger, an exterior heat exchanger, a heat pump reversing valve, an accumulator, a thermal expansion valve having a remote sensing bulb disposed in heat transferable contact with the refrigerant piping section between said accumulator and said reversing valve, an outdoor temperature sensor, and a first means for heating said remote sensing bulb in response to said outdoor temperature sensor thereby opening said thermal expansion valve to raise suction pressure in order to mitigate defrosting of said exterior heat exchanger wherein said heat pump continues to operate in a heating mode.

Chen, Fang C [Knoxville, TN; Mei, Viung C [Oak Ridge, TN

2002-10-22T23:59:59.000Z

115

Install Removable Insulation on Valves and Fittings  

Science Conference Proceedings (OSTI)

This revised ITP tip sheet on installing removable insulation on valves and fittings provides how-to advice for improving the system using low-cost, proven practices and technologies.

Not Available

2006-01-01T23:59:59.000Z

116

Valve Application, Maintenance, and Repair Guide: In Situ State-of-the-Art Valve Welding Repair (Gate, Globe, & Check Valves), Volum e 2  

Science Conference Proceedings (OSTI)

The Valve Application, Maintenance and Repair Guide is a three volume series that provides a generic overview of valve application selection, maintenance, and repair. Volume 2 of this series is a comprehensive guide for in situ weld repair of gate, globe, and check valve components such as bodies, bonnets, discs, and seats. The information in this guide, though directed toward nuclear plant personnel, will assist all power plant engineers, planners, and maintenance personnel responsible for valve mainten...

1996-12-31T23:59:59.000Z

117

Diffusion bonding resistant valve development for sodium service  

SciTech Connect

Unanticipated functional failures occurred in valves undergoing containment integrity testing for liquid sodium service. The failures resulted from diffusion bonding of the Stellite 6B valve plug to the Type 316 stainless steel (SS) seat. As a result of these failures, a valve development program was undertaken. A modified valve incorporating a Tribaloy 800 plug showed significant improvement in resistance to diffusion bonding but still failed after long term exposure in a closed position. A second modified valve using Tribaloy 800 in both the valve plug and seat successfully resisted diffusion bonding failure. This paper reports the details of the testing and posttest valve examinations. The results of scanning electron microscopy, dispersive x-ray spectrometry, and metallography provide the characteristics of the valve failures. Limitations of the various valve designs are also discussed.

Crandall, D.L.; Low, J.O.; Chung, D.T.; Loop, R.B.

1984-04-16T23:59:59.000Z

118

Scoping Study on the Safety Impact of Valve Spacing in Natural Gas Pipelines  

Science Conference Proceedings (OSTI)

The U.S. Department of Transportation's Pipeline and Hazardous Materials Safety Administration (PHMSA) is responsible for ensuring the safe, reliable, and environmentally sound operation of the nation's natural gas and hazardous liquid pipelines. Regulations adopted by PHMSA for gas pipelines are provided in 49 CFR 192, and spacing requirements for valves in gas transmission pipelines are presented in 49 CFR 192.179. The present report describes the findings of a scoping study conducted by Oak Ridge National Laboratory (ORNL) to assist PHMSA in assessing the safety impact of system valve spacing. Calculations of the pressures, temperatures, and flow velocities during a set of representative pipe depressurization transients were carried out using a one-dimensional numerical model with either ideal gas or real gas properties for the fluid. With both ideal gas and real gas properties, the high-consequence area radius for any resulting fire as defined by Stevens in GRI-00/0189 was evaluated as one measure of the pipeline safety. In the real gas case, a model for convective heat transfer from the pipe wall is included to assess the potential for shut-off valve failures due to excessively low temperatures resulting from depressurization cooling of the pipe. A discussion is also provided of some additional factors by which system valve spacing could affect overall pipeline safety. The following conclusions can be drawn from this work: (1) Using an adaptation of the Stephens hazard radius criteria, valve spacing has a negligible influence on natural gas pipeline safety for the pipeline diameter, pressure range, and valve spacings considered in this study. (2) Over the first 30 s of the transient, pipeline pressure has a far greater effect on the hazard radius calculated with the Stephens criteria than any variations in the transient flow decay profile and the average discharge rate. (3) Other factors besides the Stephens criteria, such as the longer burn time for an accidental fire, greater period of danger to emergency personnel, increased unavoidable loss of gas, and possible depressurization cooling of the shut-off valves may also be important when deciding whether a change in the required valve spacing would be beneficial from a safety standpoint. (4) The average normalized discharge rate of {lambda}{sub avg} = 0.33 assumed by Stephens in developing his safety criteria is an excellent conservative value for natural gas discharge at the pressures, valve spacings, and pipe diameter used in this study. This conclusion remains valid even when real rather than ideal gas properties are considered in the analysis. (5) Significant pipe wall cooling effects (T{sub w} pipeline rupture accident.

Sulfredge, Charles David [ORNL

2007-07-01T23:59:59.000Z

119

Subsea production test valve assembly  

SciTech Connect

In the subsea test assembly securable within a blowout preventer stack above a subterranean well and positionable between upper and lower portions of a tubular conduit in fluid communication with a production zone within the well, the test assembly is described including an upper subassembly carriable with the upper conduit portion, a lower subassembly carriable with the lower conduit portion, and valve means in the lower subassembly manipulatable between opened and closed positions to control fluid flow within the conduit. The improvement comprises: the upper subassembly including an upper housing and first rigid dog means fixedly secured to the upper housing; the lower subassembly including a lower housing and second rigid dog means fixedly secured to the lower housing; the first rigid dog means positionable between a latch position for latching the upper and lower subassemblies and an unlatch position for unlatching the upper and lower subassemblies upon rotational movement of the first dog means with respect to the second dog means; and lock means axially movable relative to the first and second dog means from a lock position for limiting rotational movement of the first dog means with respect to the second dog means to an unlock position for allowing the first dog means to rotate relative to the second dog means and unlatch the upper subassembly from the lower subassembly.

Yates, P.D.

1988-03-22T23:59:59.000Z

120

Simulant Development for Hanford Tank Farms Double Valve Isolation (DVI) Valves Testing  

SciTech Connect

Leakage testing of a representative sample of the safety-significant isolation valves for Double Valve Isolation (DVI) in an environment that simulates the abrasive characteristics of the Hanford Tank Farms Waste Transfer System during waste feed delivery to the Waste Treatment and Immobilization Plant (WTP) is to be conducted. The testing will consist of periodic leak performed on the DVI valves after prescribed numbers of valve cycles (open and close) in a simulated environment representative of the abrasive properties of the waste and the Waste Transfer System. The valve operations include exposure to cycling conditions that include gravity drain and flush operation following slurry transfer. The simulant test will establish the performance characteristics and verify compliance with the Documented Safety Analysis. Proper simulant development is essential to ensure that the critical process streams characteristics are represented, National Research Council report Advice on the Department of Energy's Cleanup Technology Roadmap: Gaps and Bridges

Wells, Beric E.

2012-12-21T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

Calcification of the aortic valve  

NLE Websites -- All DOE Office Websites (Extended Search)

vessels. Circulation is thus compromised. If the clot occurs in a vessel leading to the heart, heart tissue starve, die, and this causes a heart attack. In the brain, it would...

122

Design of a Thermally-Actuated Gas Lift Safety Valve  

E-Print Network (OSTI)

Gas-lifted oil wells are susceptible to failure through malfunction of gas lift valve assemblies (GLV). One failure mode occurs when the GLV check valve fails and product passes into the well annulus, potentially reaching ...

Gilbertson, Eric W.

123

Miniature Fluid Control Valve - Oak Ridge National Laboratory  

Summary: Technology Description A very small control valve that is used to control flow into and out of a finger prosthesis. The valve makes use of a spring loaded poppet

124

Parametric time?frequency estimation of prosthetic heart valve sounds  

Science Conference Proceedings (OSTI)

Prosthetic heart valves have been responsible for extending the life spans and improving the quality of life of many people with serious heart conditions. Even though the heart valves are extremely reliable

D. E. Perkins; G. H. Thomas; G. A. Clark

1998-01-01T23:59:59.000Z

125

Improve safety with pilot operated relief valves  

Science Conference Proceedings (OSTI)

A weakness inherent in balanced bellows pressure relief valves (PRVs) that can cause premature failure can be avoided by using pilot operated PRVs as an alternative. Now better able to handle adverse service conditions, pilot operated PRVs are suitable for a wide range of gas, liquid and mixed-phase services. Traditionally, however, balanced bellows PRVs have been applied as overpressure protection for three notable reasons: a constant PRV set pressure with the presence of variable, superimposed back pressure (at the PRV outlet prior to its opening); valve stability and adequate capacity when built-up back pressure (at the PRV outlet during its relief cycle) exceeds 10%; and spring and guided parts barriered from the process fluid. With these benefits in mind, balanced bellows PRVs have been generally adapted by many hydrocarbon processing companies that have experienced costly, and often dangerous, premature bellows failures. Corrosion, valve instability and/or bellows flutter are causes of these failures.

Emerson, G. [Anderson, Greenwood and Co., Stafford, TX (United States)

1996-10-01T23:59:59.000Z

126

Exhaust gas bypass valve control for thermoelectric generator  

DOE Patents (OSTI)

A method of controlling engine exhaust flow through at least one of an exhaust bypass and a thermoelectric device via a bypass valve is provided. The method includes: determining a mass flow of exhaust exiting an engine; determining a desired exhaust pressure based on the mass flow of exhaust; comparing the desired exhaust pressure to a determined exhaust pressure; and determining a bypass valve control value based on the comparing, wherein the bypass valve control value is used to control the bypass valve.

Reynolds, Michael G; Yang, Jihui; Meisner, Greogry P.; Stabler, Francis R.; De Bock, Hendrik Pieter (Peter) Jacobus; Anderson, Todd Alan

2012-09-04T23:59:59.000Z

127

Worcester Solenoid Actuated Gas Operated MCO Isolation Valves  

SciTech Connect

These valves are 1 inch gas-operated full-port ball valves incorporating a solenoid and limit switches as Integral parts of the actuator that are used in different process streams within the CVDF hood. The valves fail closed (on loss of pressure or electrical) for MCO isolation to either reduce air in leakage or loss of He. All valves have coupling for transverse actuator mounting.

VAN KATWIJK, C.

2000-06-06T23:59:59.000Z

128

Worchester Solenoid Actuated Gas Operated MCO Isolation Valves  

Science Conference Proceedings (OSTI)

These valves are 1 inch gas-operated full-port ball valves incorporating a solenoid and limit switches as integral parts of the actuator that are used in process streams within the CWF hood. The valves fail closed (on loss of pressure or electrical) to prevent MCO vent drain to either reduce air In-leakage or loss of He. The valves have couplings for transverse actuator mounting.

MISKA, C.R.

2000-11-13T23:59:59.000Z

129

Worcester Solenoid Actuated Gas Operated MCO Isolation Valves  

Science Conference Proceedings (OSTI)

These valves are 1 inch gas-operated full-port ball valves incorporating a solenoid and limit switches as integral parts of the actuator that are used in different process streams within the CVDF hood. The valves fail closed (on loss of pressure or electrical) for MCO isolation to either reduce air leakage or loss of He. All valves have coupling for transverse actuator mounting.

MISKA, C.R.

2000-11-13T23:59:59.000Z

130

Worcester Solenoid Actuated Gas Operated MCO Isolation Valves  

Science Conference Proceedings (OSTI)

These valves are 1 inch gas-operated full-port ball valves incorporating a solenoid and limit switches as integral parts of the actuator that are used in different process streams within the CVDF hood. The valves fail closed (on loss of pressure or electrical) for MCO isolation to either reduce air in leakage or loss of He. All valves have coupling for transverse actuator mounting.

MISKA, C.R.

2000-09-03T23:59:59.000Z

131

Worchester Solenoid Actuated Gas Operated MCO Isolation Valves  

SciTech Connect

These valves are 1 inch gas-operated full-port ball valves incorporating a solenoid and limit switches as integral parts of the actuator that are used in process streams within the CVDF hood. The valves fail closed (on loss of pressure or electrical) to prevent MCO vent drain to either reduce air in-leakage or loss of He. The valves have couplings for transverse actuator mounting.

VAN KATWIJK, C.

2000-06-06T23:59:59.000Z

132

Acoustic classification of the state of artificial heart valves  

Science Conference Proceedings (OSTI)

Transthoracic acoustic signals from BSCC (BjrkShiley convexoconcave) mechanical heart valves implanted in human patients were processed to determine if the valves had separated outflow struts. For normal valves with intact outflow struts it is demonstrated that a time?windowed spectral analysis reveals the resonant frequency of the vibrating strut. The strut

Terry D. Plemons; Michael Hovenga

1995-01-01T23:59:59.000Z

133

Disc valve for sampling erosive process streams  

DOE Patents (OSTI)

This is a patent for a disc-type, four-port sampling valve for service with erosive high temperature process streams. Inserts and liners of ..cap alpha..-silicon carbide respectively, in the faceplates and in the sampling cavities, limit erosion while providing lubricity for a smooth and precise operation. 1 fig.

Mrochek, J.E.; Dinsmore, S.R.; Chandler, E.W.

1984-08-16T23:59:59.000Z

134

Electric actuation of a surface controlled subsea safety valve  

E-Print Network (OSTI)

The growing technology associated with petroleum equipment has lead to an increase in electrical components used to measure, adjust and control many aspects of the petroleum extraction process. This increase in electrical use has lead to the conversion of many components from hydraulic operation to electric. Therefore, it is the purpose of this report to detail and propose an engineering solution to the electrical conversion of a surface controlled subsea safety valve (SCSSV). Preliminary analysis has resulted in the following important functional requirements that the SCSSV should operate within: Temperatures up to 350 F. Estimated operational life of 20 years. Peak available power of 4300 W (actual value will be much lower than this due to other power system drains). The three conceptual designs presented in this report are the following: Electric motor actuator with a solenoid latching detent. Linear actuation with a fluid reservoir locking valve. Rotational engagement with an electric locking clutch. After reviewing and comparing these concepts, the last concept was chosen to be further developed. This concept will have the least temperature sensitive components and fewer leak path problem areas. Upon completion of the detailed design phase an electric SCSSV solution has been proposed. The following is a brief list of the performance claims: Power requirement to open: 0.5 W. Time required to open valve: 10 minutes. Installable inline with 4-1/2 tubing. Operating temperature range: 20-350 F. H?S service certified. Hold open energy requirements 0~0.2 W. There are however practical issues that must be addressed to ensure reliable and satisfactory performance of the SCSSV. The actual efficiency of the cylindrical cam mechanism and reliability of the torque overload clutch must be empirically determined due to the number of theoretical assumptions used. Thus these items should be thoroughly tested in order to produce a reliable and satisfactory SCSSV. It is with these claims and working issue that this electrically converted SCSSV be fully developed and installed for electrical petroleum production systems.

Bartlett, Timothy Joseph

2002-01-01T23:59:59.000Z

135

Statistical Performance Evaluation Of Soft Seat Pressure Relief Valves  

SciTech Connect

Risk-based inspection methods enable estimation of the probability of failure on demand for spring-operated pressure relief valves at the United States Department of Energy's Savannah River Site in Aiken, South Carolina. This paper presents a statistical performance evaluation of soft seat spring operated pressure relief valves. These pressure relief valves are typically smaller and of lower cost than hard seat (metal to metal) pressure relief valves and can provide substantial cost savings in fluid service applications (air, gas, liquid, and steam) providing that probability of failure on demand (the probability that the pressure relief valve fails to perform its intended safety function during a potentially dangerous over pressurization) is at least as good as that for hard seat valves. The research in this paper shows that the proportion of soft seat spring operated pressure relief valves failing is the same or less than that of hard seat valves, and that for failed valves, soft seat valves typically have failure ratios of proof test pressure to set pressure less than that of hard seat valves.

2013-03-26T23:59:59.000Z

136

Hydraulically actuated gas exchange valve assembly and engine using same  

DOE Patents (OSTI)

An engine comprises a housing that defines a hollow piston cavity that is separated from a gas passage by a valve seat. The housing further defines a biasing hydraulic cavity and a control hydraulic cavity. A gas valve member is also included in the engine and is movable relative to the valve seat between an open position at which the hollow piston cavity is open to the gas passage and a closed position in which the hollow piston cavity is blocked from the gas passage. The gas valve member includes a ring mounted on a valve piece and a retainer positioned between the ring and the valve piece. A closing hydraulic surface is included on the gas valve member and is exposed to liquid pressure in the biasing hydraulic cavity.

Carroll, Thomas S. (Peoria, IL); Taylor, Gregory O. (Hinsdale, IL)

2002-09-03T23:59:59.000Z

137

Proceedings of the Third NRC/ASME Symposium on Valve and Pump Testing. Session 1A--Session 2C: Volume 1  

Science Conference Proceedings (OSTI)

The 1994 Symposium on Valve and Pump Testing, jointly sponsored by the Board of Nuclear Codes and Standards of the American Society of Mechanical Engineers and by the Nuclear Regulatory Commission, provides a forum for the discussion of current programs and methods for inservice testing and motor-operated valve testing at nuclear power plants. The symposium also provides an opportunity to discuss the need to improve that testing in order to help ensure the reliable performance of pumps and valves. The participation of industry representatives, regulators, and consultants results in the discussion of a broad spectrum of ideas and perspectives regarding the improvement of inservice testing of pumps and valves at nuclear power plants. This document, Volume 1, covers sessions 1A through session 2C. The individual papers have been cataloged separately.

Not Available

1994-07-01T23:59:59.000Z

138

Proceedings of the Third NRC/ASME Symposium on Valve and Pump Testing. Volume 2, Session 3A--Session 4B  

SciTech Connect

The 1994 Symposium on Valve and Pump Testing, jointly sponsored by the Board of Nuclear Codes and Standards of the American Society of Mechanical Engineers and by the Nuclear Regulatory Commission, provides a forum for the discussion of current programs and methods for inservice testing and motor-operated valve testing at nuclear power plants. The symposium also provides an opportunity to discuss the need to improve that testing in order to help ensure the reliable performance of pumps and valves. The participation of industry representatives, regulators, and consultants results in the discussion of a broad spectrum of ideas and perspectives regarding the improvement of inservice testing of pumps and valves at nuclear power plants. Individual papers have been cataloged separately.

Not Available

1994-07-01T23:59:59.000Z

139

Technical evaluation: 300 Area steam line valve accident  

SciTech Connect

On June 7, 1993, a journeyman power operator (JPO) was severely burned and later died as a result of the failure of a 6-in. valve that occurred when he attempted to open main steam supply (MSS) valve MSS-25 in the U-3 valve pit. The pit is located northwest of Building 331 in the 300 Area of the Hanford Site. Figure 1-1 shows a layout of the 300 Area steam piping system including the U-3 steam valve pit. Figure 1-2 shows a cutaway view of the approximately 10- by 13- by 16-ft-high valve pit with its various steam valves and connecting piping. Valve MSS-25, an 8-in. valve, is located at the bottom of the pit. The failed 6-in. valve was located at the top of the pit where it branched from the upper portion of the 8-in. line at the 8- by 8- by 6-in. tee and was then ``blanked off`` with a blind flange. The purpose of this technical evaluation was to determine the cause of the accident that led to the failure of the 6-in. valve. The probable cause for the 6-in. valve failure was determined by visual, nondestructive, and destructive examination of the failed valve and by metallurgical analysis of the fractured region of the valve. The cause of the accident was ultimately identified by correlating the observed failure mode to the most probable physical phenomenon. Thermal-hydraulic analyses, component stress analyses, and tests were performed to verify that the probable physical phenomenon could be reasonably expected to produce the failure in the valve that was observed.

Not Available

1993-08-01T23:59:59.000Z

140

Water cooling of HVDC thyristor valves  

SciTech Connect

It is generally accepted that water is a very effective medium to remove heat losses from any type of equipment. When used for HVDC thyristor valves, the fundamentals of electrolyte conduction and water chemistry need to be considered in the design of the cooling circuit. The characteristics of the materials used, in conjunction with high voltage stresses and circuit configuration, play an important role to assure longevity and corrosion-free performance.

Lips, H.P. (Siemens AG, Erlangen (Germany))

1994-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

The operation of LPG relief valves  

SciTech Connect

As stipulated by NFPA 58, all LPG storage containers must be equipped with one or more pressure relief devices. These devices are sized to prevent rupture of a normally charged container when exposed to fire. This paper describes in detail the functioning of the spring-loaded relief valve. The author discusses how the venting of LPGs can produce unacceptable risks and how training is a necessary part of controlling such a situation.

Stannard, J.H. Jr

1989-11-01T23:59:59.000Z

142

Method and system for measuring gate valve clearances and seating force  

DOE Patents (OSTI)

Valve clearances and seating force, as well as other valve operational parameters, are determined by measuring valve stem rotation during opening and closing operations of a translatable gate valve. The magnitude of the stem rotation, and the relative difference between the stem rotation on opening and closing provides valuable data on the valve internals in a non-intrusive manner.

Casada, Donald A. (Knoxville, TN); Haynes, Howard D. (Knoxville, TN); Moyers, John C. (Oak Ridge, TN); Stewart, Brian K. (Burns, TN)

1996-01-01T23:59:59.000Z

143

Platelet thrombosis in cardiac-valve prostheses  

SciTech Connect

The contribution of platelets and clotting factors in thrombosis on cardiovascular prostheses had been quantified with several tracers. Thrombus formation in vivo could be measured semiquantitatively in animal models and patients with indium-111, Technetium-99m labeled platelets, iodine-123, iodine-131 labeled fibrinogen, and In-111 and Tc-99m labeled antibody to the fibrinogen-receptor on the platelet- membrane, or fibrin. The early studies demonstrated that certain platelet-inhibitors, e.g. sulfinpyrazone, aspirin or aspirin- persantine increased platelet survival time with mechanical valves implanted in the baboon model and patients. Thrombus localization by imaging is possible for large thrombus on thrombogenic surface of prosthesis in the acute phase. The majority of thrombus was found in the sewing ring (Dacron) in the acute phase in both the mechanical and tissue valves. The amount of retained thrombus in both mechanical and tissue valves in our one-day study in the dog model was similar (< 1% if injected In-111 platelets = 5 billion platelets). As the fibrous ingrowth covered the sewing ring, the thrombus formation decreased significantly. Only a small amount of thrombus was found on the leaflets at one month in both the dog and calf models. 38 refs., 9 figs., 5 tabs.

Dewanjee, M.K.

1989-01-01T23:59:59.000Z

144

ANALYSIS OF CHECK VALVE DISC MOTION DURING A FLOW TRANSIENT  

SciTech Connect

An analysis of the dynamics of a check valve disc under the influence of a flow transient is presented. The impact velocities of the disc and the pressure surge resulting from extinguishing a fluid velocity are predicted. This analysis develops the equations of motion of a simple swing disc check valve from Newton's Second Law. Modifications of the analysis necessary for application to other types of valves are described. The developed equations are progiammed for the Philco-2000 digital computer in FORTRAN as the SLAM Code. The Code input consists of the characteristics of the valve and the flow transient. The output of the code includes the dynamics of the valve disc as a function of time and the pressure surge induced by valve closure. (H.G.G.)

Fuls, G.M.

1962-12-01T23:59:59.000Z

145

U.S. Steam Turbine Valve Actuator Condition Assessment  

Science Conference Proceedings (OSTI)

This report provides nuclear and fossil plant personnel with current information on the inspection and assessment of steam turbine valve actuators.

2008-12-23T23:59:59.000Z

146

DEVELOPMENT OF FREEZE VALVE FOR USE IN THE MSRE  

SciTech Connect

Three types of frozen-seal valves'' were tested for possible use in the MSRE. The seal was melted by direct resistance heat, by induction heat, and by clamp-on Calrod heat. The frozen seal was made in a preformed restriction section of a standard piece of pipe by a cooling-gas jet stream directed at the restriction. All three valves performed satisfactorily through 100 test cycles. The Calrodheated valve was selected for MSRE use on the basis of simplicity of design and of operation. Two of the valves are successfully undergoing further tests on the MSRE Engineering Test Loop. (auth)

Richardson, M.

1962-02-28T23:59:59.000Z

147

American Valve: Order (2010-CW-1411) | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Valve had failed to certify that certain showerhead models comply with the applicable water conservation standards. The Order adopted a Compromise Agreement, which reflected...

148

U.S. Steam Turbine Valve Metallurgy Guide  

Science Conference Proceedings (OSTI)

This report provides nuclear and fossil plant personnel with current information on the metallurgical aspects of the steam turbine valve components used in U.S. power plants.

2009-03-30T23:59:59.000Z

149

Computer Based Training: Check Valves 1.0  

Science Conference Proceedings (OSTI)

ETTM Check Valves is a computer based training module that allows users to access training when desired and review it at their own pace. It provides graphics and limited interactive features to enhance learning. The purpose of this module is to provide the user with a basis for selecting and sizing a check valve for nuclear station applications. While more than one valve type can be used for most applications, the intent is to point out the differences between check valve designs and to assist the user i...

2010-10-07T23:59:59.000Z

150

Meso-fluidic Control Valve - Oak Ridge National Laboratory  

Volume Systems Advantages: Small Size ... Meso-fluidic Control Valve-1974 Contact: Mark Reeves Oak Ridge National Laboratory P.O. Box 2008, Mail Stop ...

151

Numerical Investigation of the Performance of Three Hinge Designs of Bileaflet Mechanical Heart Valves  

E-Print Network (OSTI)

parameters on bilea?et mechanical heart valve ?ow dynamics.J. Heart Valve Dis. 18:535545, 2009. Gross, J. M. , M. C.two bilea?et mechanical heart valves under aortic and mitral

Simon, Hlne A.; Ge, Liang; Sotiropoulos, Fotis; Yoganathan, Ajit P.

2010-01-01T23:59:59.000Z

152

Stem control of a sliding-stem pneumatic control valve using a recurrent neural network  

Science Conference Proceedings (OSTI)

This paper presents a neural scheme for controlling an actuator of pneumatic control valve system. Bondgraph method has been used to model the actuator of control valve, in order to compare the response characteristics of valve. The proposed controller ...

Mohammad Heidari, Hadi Homaei

2013-01-01T23:59:59.000Z

153

Simulation of a novel electromechanical engine valve drive to quantify performance gains in fuel consumption  

E-Print Network (OSTI)

This thesis describes the modeling and simulation of a novel electromechanical valve drive known as the MIT EMV. This valve drive allows an engine to achieve variable valve timing which has been shown to produce improvements ...

Miller, Justin (Justin Lee)

2011-01-01T23:59:59.000Z

154

EPRI/C-E PWR Safety Valve Test Report Volume 3: Test Results for Dresser Safety Valve Model 31739A  

Science Conference Proceedings (OSTI)

EPRI at the request of the PWR utilities developed an overall program for the testing of PWR primary system safety and relief valves. This program was in response to NUREG 0578 Item 2.1.2 and NUREG 0737 Item II.D.1.A requirements. This report documents the results of safety valve testing performed as part of the overall program at the EPRI/C-E Valve Test Facility located at Combustion Engineering's Kreisinger Development Laboratory, Windsor, Connecticut. Seven safety valves representative of those utiliz...

1983-02-01T23:59:59.000Z

155

Self-regulating flow control device  

DOE Patents (OSTI)

A variable, self-regulating valve having a hydraulic loss coefficient proportional to a positive exponential power of the flow rate. The device includes two objects in a flow channel and structure which assures that the distance between the two objects is an increasing function of the flow rate. The range of spacing between the objects is such that the hydraulic resistance of the valve is an increasing function of the distance between the two objects so that the desired hydraulic loss coefficient as a function of flow rate is obtained without variation in the flow area.

Humphreys, Duane A. (Pittsburgh, PA)

1984-01-01T23:59:59.000Z

156

Nuclear-radiation-actuated valve. [Patent application; for increasing coolant flow to blanket  

DOE Patents (OSTI)

The present invention relates to a breeder reactor blanket fuel assembly coolant system valve which increases coolant flow to the blanket fuel assembly to minimize long-term temperature increases caused by fission of fissile fuel created from fertile fuel through operation of the breeder reactor. The valve has a valve first part (such as a valve rod with piston) and a valve second part (such as a valve tube surrounding the valve rod, with the valve tube having side slots surrounding the piston). Both valve parts have known nuclear radiation swelling characteristics. The valve's first part is positioned to receive nuclear radiation from the nuclear reactor's fuel region. The valve's second part is positioned so that its nuclear radiation induced swelling is different from that of the valve's first part. The valve's second part also is positioned so that the valve's first and second parts create a valve orifice which changes in size due to the different nuclear radiation caused swelling of the valve's first part compared to the valve's second part. The valve may be used in a nuclear reactor's core coolant system.

Christiansen, D.W.; Schively, D.P.

1982-01-19T23:59:59.000Z

157

Giant magnetoresistance in organic spin valves  

SciTech Connect

Interfacial diffusion between magnetic electrodes and organic spacer layers is a serious problem in the organic spintronics which complicates attempts to understand the spin-dependent transport mechanism and hurts the achievement of a desirably high magnetoresistance (MR). We deposit nanodots instead of atoms onto the organic layer using buffer layer assist growth. Spin valves using this method exhibit a sharper interface and a giant MR of up to {approx}300%. Analysis of the current-voltage characteristics indicates that the spin-dependent carrier injection correlates with the observed MR.

Sun, Da-Li [ORNL; Yin, Lifeng [ORNL; Sun, Chengjun [ORNL; Guo, Hangwen [ORNL; Gai, Zheng [ORNL; Zhang, Xiaoguang [ORNL; Ward, Thomas Z [ORNL; Cheng, Zhaohua [Chinese Academy of Sciences; Shen, Jian [ORNL

2010-01-01T23:59:59.000Z

158

Closed Loop Test Facility for hot dirty gas valves  

SciTech Connect

A design study of a closed loop test facility for eight-inch hot dirty gas valves is presented. The objective of the facility is to quality valves for use in coal gasifiers, combined cycle plants, and pressurized fluid bed combustors. Outline sketches and estimated costs are presented for the selected design.

Not Available

1980-02-06T23:59:59.000Z

159

Classification of prosthetic heart valve sounds: A parametric approach  

Science Conference Proceedings (OSTI)

People with heart problems have had their lives extended considerably with the development of the prosthetic heart valve. Great strides have been made in the development of the valves through the use of improved materials as well as efficient mechanical designs. However

J. V. Candy; H. E. Jones

1995-01-01T23:59:59.000Z

160

Cam-driven valve system for steam turbines  

SciTech Connect

This patent describes, in a steam turbine system including a source of motive steam and a turbine adapted to operate at less than a full load, the turbine including an improved cam-driven valve system for activating a varying number of steam control valves to permit transferring between a maximum arc-admission mode and a minimum arc-admission mode. It comprises: a steam chest for receiving the motive steam from the source, the steam chest including a plurality of valves connected to a corresponding turbine section and set for a minimum admission of motive steam into the turbine below 100 percent; a first cam lift means for actuating a portion of the valves and second cam lift means for actuating the remainder of the valves.

Silvestri, G.J. Jr.

1990-02-27T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

THE VALVE-ACTUATED PULSE COLUMN DESIGN AND OPERATION  

SciTech Connect

A countercurrent extraction column is described which employs timed solenoid valves and pressurized feeds to provide a pulsing action to disperse the phases. The steps in the pulsing cycle are independent and thus provide greater separation of the operating variables than is possible with conventional pulse columns. The column described is particularly useful as a resesrch tool for the study of extraction mechanism although a larger installation operating on the same principles should be quite workable. The 4-stage-cycle or mixersettler type column operation has an inherent advantage in that the rapid coalescence and redispersion of phases are believed to lead to greater extraction than simple movement of a dispersed phase through a continuous medium. In addition, the sharp pulse provided should produce greater turbulence than the more conventional pulsing arrangement. Some results of operation on the extraction and stripping of uranyl nitrate using tributyl phosphate as a solvent are included. These data correspond to Metal Recovery and Erex type systems. (auth)

Burger, L.L.; Clark, L.H.

1951-12-01T23:59:59.000Z

162

Geothermal: Sponsored by OSTI -- Leading trends in environmental...  

Office of Scientific and Technical Information (OSTI)

Leading trends in environmental regulation that affect energy development. Final report Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log On...

163

Drinking Water Problems: Lead  

E-Print Network (OSTI)

Lead in drinking water can damage the brain, kidneys, nervous system and red blood cells. This publication explains how lead can enter drinking water, how to have your water tested, and how to eliminate lead from drinking water.

Dozier, Monty; McFarland, Mark L.

2004-02-20T23:59:59.000Z

164

Internal combustion engine with rotary valve assembly having variable intake valve timing  

DOE Patents (OSTI)

An internal combustion engine has rotary valves associated with movable shutters operable to vary the closing of intake air/fuel port sections to obtain peak volumetric efficiency over the entire range of speed of the engine. The shutters are moved automatically by a control mechanism that is responsive to the RPM of the engine. A foot-operated lever associated with the control mechanism is also used to move the shutters between their open and closed positions.

Hansen, Craig N. (Eden Prairie, MN); Cross, Paul C. (Shorewood, MN)

1995-01-01T23:59:59.000Z

165

Engine valve and method of producing the same  

SciTech Connect

An engine valve of an internal combustion engine is described which consists of: a hollow tube member formed of a drawn steel tube, the hollow tube member having a central portion comprising a tubular body, and a first end part which is flared outwardly and includes an open end peripheral portion at the extreme end of the first end part, the hollow tube member tubular body constituting a valve stem section; a generally disc-shaped lid member made of metal and having a peripheral portion integrally connected with the open end peripheral portion of the hollow tube member, the lid member and the first end part of the hollow tube member constituting a valve head section; and a stem end member made of metal and integrally connected with a second part of the hollow tube member; a filler metal comprising stellite disposed in contact with the open end peripheral portion of the hollow tube member first end part and the peripheral portion of the disc-shaped lid member to secure together the hollow tube member and the lid member to thereby form the integral connection, the stellite filler metal being a wear and corrosion resistant nonferrous alloy, the filler metal being formed as a padding having a peripheral surface including a valve face for contacting a valve seat of an engine; and a filling comprising an aluminum alloy containing silicon, the filling being disposed in the valve head section to fill the valve head section.

Hayashi, Y.

1986-07-01T23:59:59.000Z

166

Getting the Lead Out  

DOE R&D Accomplishments (OSTI)

Discarded electronics no longer pose an environmental hazard from lead solder thanks to a lead-free alternative developed at the Ames Laboratory.

Gibson, Kerry

2011-04-08T23:59:59.000Z

167

Analysis of a Third-Generation Princeton Tri-leaflet Mechanical Heart Valve  

E-Print Network (OSTI)

Analysis of a Third-Generation Princeton Tri-leaflet Mechanical Heart Valve Michael Hsu Advisor heart valve · Static analysis of leaflet under uniform pressure of 10 MPa Summer Objectives · Find Heart valve disease · Over 5 million affected · Over 225,000 valve- replacement surgeries performed

Petta, Jason

168

Control system for the turbomolecular pumping stations and sector valves of the CERN Intersecting Storage Rings  

E-Print Network (OSTI)

Control system for the turbomolecular pumping stations and sector valves of the CERN Intersecting Storage Rings

Grbner, Oswald

1971-01-01T23:59:59.000Z

169

Noninvasive valve monitor using constant magnetic and/or DC electromagnetic field  

DOE Patents (OSTI)

One or more sources of steady magnetic field are carefully located on the outside of a valve body. The constant magnetic field is transmitted into the valve body and valve internals. A magnetic field detector carefully located on the outside of the valve body detects the intensity of the magnetic field at its location. As the position of a valve internal part is changed, there is an alteration in the magnetic field in the valve, and a consequent change in the detected magnetic field. Changes in the detected signal provide an indication of the position and motion of the valve internals.

Casada, D.A.; Haynes, H.D.

1993-08-17T23:59:59.000Z

170

Noninvasive valve monitor using constant magnetic and/or DC electromagnetic field  

SciTech Connect

One or more sources of steady magnetic field are carefully located on the outside of a valve body. The constant magnetic field is transmitted into the valve body and valve internals. A magnetic field detector carefully located on the outside of the valve body detects the intensity of the magnetic field at its location. As the position of a valve internal part is changed, there is an alteration in the magnetic field in the valve, and a consequent change in the detected magnetic field. Changes in the detected signal provide an indication of the position and motion of the valve internals.

Casada, Donald A. (Knoxville, TN); Haynes, Howard D. (Knoxville, TN)

1993-01-01T23:59:59.000Z

171

Refining of Recycled Lead  

Science Conference Proceedings (OSTI)

...pure lead generally goes into nonbattery sources such as sheet, pipe, cable, and gasoline additives. The pure lead for battery oxide is generally supplied by primary-lead smelters. In the United States, maintenance-free batteries with lead-calcium alloy grids make up about 30% of the market, and...

172

Preparation of design specifications and design reports for pumps, valves, piping, and piping supports used in safety-related portions of nuclear power plants  

SciTech Connect

Section III of the ASME Boiler and Pressure Vessel Code requires the preparation of Design Specifications and Design Reports as part of the design process leading to construction of a nuclear power plant, in compliance with provisions of Title 10 of the Code of Federal Regulations (10 CFR). Guidelines for preparing this documentation are contained in nonmandatory Appendixes B and C of the ASME Code. This report gives an in-depth review of the ASME Code requirements and guidance, beginning with the first edition of the Code in 1963 through the 1983 edition, Summer 1985 Addenda. Recommendations for substantial revisions to the Code are presented based on the authors experience in conducting design documentation audits of pumps, valves, piping, and piping supports for nuclear power plants undergoing Nuclear Regulatory Commission (NRC) review for Operating Licenses. It is concluded that adequate Design Specifications and Design Reports are absolutely necessary for the normal operating life of a plant and are vital if plant life extension is planned.

Rodabaugh, E.C.; Moore, S.E.

1987-06-01T23:59:59.000Z

173

Analog and digital control of an electronic throttle valve  

E-Print Network (OSTI)

Two electronic throttler controllers were designed and implemented for an automotive throttle valve on a four-cylinder, spark-ignition gasoline engine. The first controller was designed using operational amplifiers and ...

Martins, Toms V

2012-01-01T23:59:59.000Z

174

Replace Pressure-Reducing Valves with Backpressure Turbogenerators  

SciTech Connect

This revised ITP steam tip sheet on replacing pressure-reducing valves provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

Not Available

2006-01-01T23:59:59.000Z

175

Technical Repair Guide for Rotork Valve Actuators "NA" Range Models  

Science Conference Proceedings (OSTI)

This guide provides comprehensive technical information on Rotork valve actuator operation, maintenance, testing, and troubleshooting. Its design provides the user with a uniform methodology to reduce human errors and increase actuator reliability.

1995-12-31T23:59:59.000Z

176

Efforts by the nuclear industry to evaluate check valve failures  

SciTech Connect

Recent studies identified approximately 4000 check valve failures that occurred from 1984-1991. Of these, approximately 1600 were determined to be significant enough to require further analysis. This is to be compared with the existing check valve population of nearly 21,000 valves. The strategy proposed in this paper is to establish a refined, centralized check valve failure/reliability database based in part on existing Institute of Nuclear Power Operations (INPO) Nuclear Plant Reliability Data System (NPRDS) data. Ideally the database would be maintained in a central location, augmented with specific component information, overall reliability information, and updated at least biannually. The data would be available to sort and search as desired. The conceptual plan is provided and possible uses of the database are given.

Hart, K.; McElhaney, K.L.; Casada, D.A.

1994-12-31T23:59:59.000Z

177

Failure Mode and Sensitivity Analysis of Gas Lift Valves  

E-Print Network (OSTI)

Gas-lifted oil wells are susceptible to failure through malfunction of gas lift valves. This is a growing concern as offshore wells are drilled thousands of meters below the ocean floor in extreme temperature and pressure ...

Gilbertson, Eric W.

178

Design of an electronically-actuated gas lift safety valve  

E-Print Network (OSTI)

Gas lift valves are widely used in oil production fields to pump recycled gas and nitrogen into the production tubing, to sustain production by aerating the oil and lifting it to the ground or sea surface. Today's industry ...

Yu, Changkuan, S.M. Massachusetts Institute of Technology

2013-01-01T23:59:59.000Z

179

Steam Turbine Casing and Valve Body Repair Guidelines  

Science Conference Proceedings (OSTI)

Todays flexible mode of operation can result in damage to heavy-section components, such as steam turbine and valve casings. Thus, owners and operators are often faced with repairing a critical component. This report is part of a set of documents that address the key areas in the asset management of steam turbine casings and valve bodiesnondestructive evaluation and damage detection, repair, and life ...

2013-12-14T23:59:59.000Z

180

Worcester 1 Inch Solenoid Actuated Gas Operated SCHe System Valves  

SciTech Connect

1 inch gas-operated full-port ball valves incorporate a solenoid and limit switches as integral parts of the actuator. These valves are normally open and fail safe to the open position (GOV-1*02 and 1*06 fail closed) to provide a flow path of helium gas to the MCO under helium purge and off-normal conditions when the MCO is isolated.

MISKA, C.R.

2000-09-03T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

Worcester 1 Inch Solenoid Actuated Gas Operated SCHe System Valves  

SciTech Connect

1 inch Gas-operated full-port ball valves incorporate a solenoid and limit switches as integral parts of the actuator. These valves are normally open and fail safe to the open position (GOV-1*02 and 1*06 fall closed) to provide a flow path of helium gas to the MCO under helium purge and off-normal conditions when the MCO is isolated.

VAN KATWIJK, C.

2000-10-23T23:59:59.000Z

182

Worcester 1 Inch Solenoid Actuated Gas Operated SCHe System Valves  

SciTech Connect

1 inch gas-operated full-port ball valves incorporate a solenoid and limit switches as integral parts of the actuator. These valves are normally open and fail safe to the open position (GOV-1*02 and 1*06 fail closed) to provide a flow path of helium gas to the MCO under helium purge and off-normal conditions when the MCO is isolated.

MISKA, C.R.

2000-11-13T23:59:59.000Z

183

Worcester 1 Inch Solenoid Actuated Gas Operated SCHe System Valves  

SciTech Connect

1 inch Gas-operated full-port ball valves incorporate a solenoid and limit switches as integral parts of the actuator. These valves are normally open and fail safe to the open position (GOV-1*02 and 1*06 fail closed) to provide a flow path of helium gas to the MCO under helium purge and off-normal conditions when the MCO is isolated.

VAN KATWIJK, C.

2000-06-06T23:59:59.000Z

184

Valving for controlling a fluid-driven reciprocating apparatus  

DOE Patents (OSTI)

A pair of control valve assemblies for alternately actuating a pair of fluid-driven free-piston devices by using fluid pressure communication therebetween. Each control valve assembly is switched by a pressure signal depending on the state of its counterpart's piston. The communication logic is arranged to provide overlap of the forward strokes of the pistons, so that at least one of the pair will always be pressurized. Thus, uninterrupted pumping of liquid is made possible from a pair of free-piston pumps. In addition, the speed and frequency of piston stroking is entirely dependent on the mechanical power load applied. In the case of a pair of pumps, this enables liquid delivery at a substantially constant pressure over the full range of flow rates, from zero to maximum flow. Each of the valve assemblies uses an intake-exhaust valve and a signal valve with the signal valve of one pump being connected to be pressure responsive to the piston of the opposite cylinder or pump.

Whitehead, John C. (Davis, CA)

1995-01-01T23:59:59.000Z

185

Gas lift valve failure mode analysis and the design of a thermally-actuated positive-locking safety valve  

E-Print Network (OSTI)

Gas-lifted oil wells are susceptible to failure through malfunction of gas lift valves. This is a growing concern as offshore wells are drilled thousands of meters below the ocean floor in extreme temperature and pressure ...

Gilbertson, Eric (Eric W.)

2010-01-01T23:59:59.000Z

186

Engine including hydraulically actuated valvetrain and method of valve overlap control  

DOE Patents (OSTI)

An exhaust valve control method may include displacing an exhaust valve in communication with the combustion chamber of an engine to an open position using a hydraulic exhaust valve actuation system and returning the exhaust valve to a closed position using the hydraulic exhaust valve actuation assembly. During closing, the exhaust valve may be displaced for a first duration from the open position to an intermediate closing position at a first velocity by operating the hydraulic exhaust valve actuation assembly in a first mode. The exhaust valve may be displaced for a second duration greater than the first duration from the intermediate closing position to a fully closed position at a second velocity at least eighty percent less than the first velocity by operating the hydraulic exhaust valve actuation assembly in a second mode.

Cowgill, Joel (White Lake, MI)

2012-05-08T23:59:59.000Z

187

Monovalve with integrated fuel injector and port control valve, and engine using same  

DOE Patents (OSTI)

An engine includes an engine casing that defines a hollow piston cavity separated from an exhaust passage and an intake passage by a valve seat. A gas exchange valve member is positioned adjacent the valve seat and is moveable between an open position and a closed position. The gas exchange valve member also defines an opening that opens into the hollow piston cavity. A needle valve member is positioned in the gas exchange valve member adjacent a nozzle outlet and is moveable between an inject position and a blocked position. A port control valve member, which has a hydraulic surface, is mounted around the gas exchange valve member and moveable between an intake position and an exhaust position. A pilot valve is moveable between a first position at which the port control hydraulic surface is exposed to a source of high pressure fluid, and a second position at which the port control hydraulic surface is exposed to a source of low pressure fluid.

Milam, David M. (Metamora, IL)

2001-11-06T23:59:59.000Z

188

Valves - current operating experience of slurry valves (block and letdown) in coal liquefaction processes. Third quarter report  

Science Conference Proceedings (OSTI)

This paper summarizes the recent letdown and block valve experience in the liquefaction pilot plants. Also included is a brief description of the research and development activities on valves which are conducted in supporting laboratories. The purpose of the summary is to concentrate on critical component problems common to all liquefaction plants, to avoid duplication of efforts, and to help provide timely solutions to the valve problems. The main source of information used in this paper is the Minutes of the Critical Component and Materials Meeting which is sponsored by the Office of Coal Processing, Fossil Energy, Department of Energy. Other sources of information such as the technical progress reports are also included based on availability and relevance to topics covered in this paper. It is intended that this report will be followed by updates as pertinent information concerning valves becomes available. In the subsequent sections of this paper a brief outline of past valve studies is given as background material followed by a summary of the most recent valve operating experience at the liquefaction plants.

NONE

1996-07-01T23:59:59.000Z

189

Design and Testing of Vacuum Breaker Check Valve for Simplified Boiling Water Reactor  

Science Conference Proceedings (OSTI)

A new design of the vacuum breaker check valve was developed to replace the mechanical valve in a simplified boiling water reactor. Scaling and design calculations were performed to obtain the geometry of new passive hydraulic vacuum breaker check valve. In order to check the valve performance, a RELAP5 model of the simplified boiling water reactor system with the new valve was developed. The valve was implemented in an integral facility, PUMA and was tested for large break loss of coolant accident. (authors)

Ishii, M.; Xu, Y.; Revankar, S.T. [Purdue University, West Lafayette, IN 47907 (United States)

2002-07-01T23:59:59.000Z

190

Site Lead TQP Standard  

NLE Websites -- All DOE Office Websites (Extended Search)

Qualification Standard for the Office of Safety and Emergency Management Evaluations Site Lead Program May 2011 Office of Enforcement and Oversight Office of Health, Safety and...

191

Lead Zinc and Tin  

Science Conference Proceedings (OSTI)

"High Temperature Lead-free Solder for Microelectronics" (Overview), Frank R. Gayle, Gary Becka, Jerry Badgett, Gordon Whitten, Tsung-Yu Pan, Angela Grusd,

192

Quasi-Static Hydraulic Control Systems and Energy Savings Potential Using Independent Metering Four-Valve Assembly Configuration .  

E-Print Network (OSTI)

??In this research, the four valve independent metering configuration is to be investigated. The Independent metering concept will be emphasized and compared to spool valve (more)

Shenouda, Amir

2006-01-01T23:59:59.000Z

193

Design and fabrication of microfluidic valves using poly(N-isopropylacrylamide)  

E-Print Network (OSTI)

A compact printable microfluidic valve composed of poly(N-isopropylacrylamide) has been designed, fabricated, and tested. The design of the valve consists of filling microwells with poly(NIPAAm) and bonding PDMS channels ...

Reticker-Flynn, Nathan Edward

2008-01-01T23:59:59.000Z

194

Processing of prosthetic heart valve sounds for single leg separation classification  

Science Conference Proceedings (OSTI)

People with serious heart conditions have had their expected life span extended considerably with the development of the prosthetic heart valve especially with the great strides made in valve design. Even though the designs are extremely reliable

J. V. Candy; H. E. Jones

1995-01-01T23:59:59.000Z

195

Drive piston assembly for a valve actuator assembly  

DOE Patents (OSTI)

A drive piston assembly is provided that is operable to selectively open a poppet valve. The drive piston assembly includes a cartridge defining a generally stepped bore. A drive piston is movable within the generally stepped bore and a boost sleeve is coaxially disposed with respect to the drive piston. A main fluid chamber is at least partially defined by the generally stepped bore, drive piston, and boost sleeve. First and second feedback chambers are at least partially defined by the drive piston and each are disposed at opposite ends of the drive piston. At least one of the drive piston and the boost sleeve is sufficiently configured to move within the generally stepped bore in response to fluid pressure within the main fluid chamber to selectively open the poppet valve. A valve actuator assembly and engine are also provided incorporating the disclosed drive piston assembly.

Sun, Zongxuan (Troy, MI)

2010-02-23T23:59:59.000Z

196

Lead carbonate scintillator materials  

DOE Patents (OSTI)

Improved radiation detectors containing lead carbonate or basic lead carbonate as the scintillator element are disclosed. Both of these scintillators have been found to provide a balance of good stopping power, high light yield and short decay constant that is superior to other known scintillator materials. The radiation detectors disclosed are favorably suited for use in general purpose detection and in medical uses.

Derenzo, Stephen E. (Pinole, CA); Moses, William W. (Berkeley, CA)

1991-01-01T23:59:59.000Z

197

Specifications for Recycled Lead  

Science Conference Proceedings (OSTI)

...in lead are antimony, arsenic, bismuth, copper, nickel, silver, tin, and zinc. Recently, selenium and tellurium have been added as important impurities in the United States. Primary-lead companies generally produce the 99.99% Pb grade, whereas recyclers produce the 99.97% Pb grade. The major difference...

198

Production of Recycled Lead  

Science Conference Proceedings (OSTI)

...production of lead from recycled and mined (primary) sources for 1980 to 1988. At present, just under half of the total world lead production of 4.3 million metric tons (4.7 million tons) comes from recycling of scrap materials. As indicated in Table 4, there has been very little change in recent...

199

Estimating the Annual Water and Energy Savings in Texas A & M University Cafeterias using Low Flow Pre-Rinse Spray Valves  

E-Print Network (OSTI)

Improving the efficiency of a Pre- Rinse Spray Valve (PRSV) is one of the most cost effective water conservation methods in the Food Services Industry. A significant contributor to this cost efficiency is the reduction in the energy costs required to provide the mandatory hot water. This research paper estimates the potential quantity and dollar value of the water and energy that can be saved annually in Texas A&M University's dining services with the installation of low flow pre-rinse spray valves. The data collection was obtained from four of Texas A&M University's Dining Services facilities. The annual savings were estimated by contrasting the water consumption of the existing T & S Brass B 0107-M PRSVs with the latest and most advanced available low flow T and S Brass B 0107-C PRSV. The annual water consumption of the existing and new PRSVs were predicted by measuring an individual average flow rate for each and observing the number of hours per day the PRSV would be used. The observed and measured values were extrapolated to amount rates to determine cost savings. The dollar value was ascertained using the utility cost data recorded over a semester by the Facilities Coordinator of the Department of Dining Services. The findings of this study show that the water savings from a single PRSV could lead to an estimated annual saving ranging between 46% and 78% of the current operation cost. The T & S Brass B 0107-C PRSV is currently priced between $52- $60 per valve resulting in a payback period ranging between 1.5-6 months per valve. If every valve on campus was replaced, the University could reap a savings in the range of $ 5,400- $22,590 over the 5 year useful life of the valve, having initially invested less than $550.

Rebello, Harsh Varun

2010-05-01T23:59:59.000Z

200

Technical Repair Guidelines for the Limitorque Model SMB-00 Valve Actuator  

Science Conference Proceedings (OSTI)

This technical repair guideline (TRG) is the second in a series of documents devoted to comprehensive maintenance and repair of the motor-operated Limitorque SMB-00 valve actuator. The Limitorque SMB-00 valve actuator is mounted on a nonrotating rising stem valve and is applicable to other types of valves and installation arrangements. This report was written with the latest available information, however, changes to the actuator's design, parts availability, etc. may supersede this document but will not...

1995-06-30T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

Water Consumption from Freeze Protection Valves for Solar Water Heating Systems  

DOE Green Energy (OSTI)

Conference paper regarding research in the use of freeze protection valves for solar domestic water heating systems in cold climates.

Burch, J.; Salasovich, J.

2005-12-01T23:59:59.000Z

202

Magnetism reflectometer study shows LiF layers improve efficiency in spin valve devices  

Science Conference Proceedings (OSTI)

New, more efficient materials for spin valves - a device used in magnetic sensors, random access memories, and hard disk drives - may be on the way based on research using the magnetism reflectometer at Oak Ridge National Laboratory (ORNL). Spin valve devices work by means of two or more conducting magnetic material layers that alternate their electrical resistance depending on the layers alignment. Giant magnetoresistance is a quantum mechanical effect first observed in thin film structures about 20 years ago. The effect is observed as a significant change in electrical resistance, depending on whether the magnetization of adjacent ferromagnetic layers is in a parallel or an antiparallel magnetic alignment. 'What we are doing here is developing new materials. The search for new materials suitable for injecting and transferring carriers with a preferential spin orientation is most important for the development of spintronics,' said Valeria Lauter, lead instrument scientist on the magnetism reflectometer at the Spallation Neutron Source (SNS), who collaborated on the experiment. The researchers discovered that the conductivity of such materials is improved when an organic polymer semiconductor layer is placed between the magnetic materials. Organic semiconductors are now the material of choice for future spin valve devices because they preserve spin coherence over longer times and distances than conventional semiconductors. While research into spin valves has been ongoing, research into organic semiconductors is recent. Previous research has shown that a 'conductivity mismatch' exists in spin valve systems in which ferromagnetic metal electrodes interface with such organic semiconductors as Alq3 ({pi}-conjugated molecule tris(8-hydroxy-quinoline) aluminium). This mismatch limits the efficient injection of the electrons from the electrodes at the interface with the semiconductor material. However, lithium fluoride (LiF), commonly used in light-emitting diodes, has been found to enhance the injection of electrons through the semiconductor. Researchers from the University of Alabama and ORNL used polarized neutrons at the magnetism reflectometer at SNS to investigate the electronic, magnetic, and structural properties of the electrodes in a novel system. In this system, the magnetic layers cobalt and Ni{sub 80}Fe{sub 20} are interfaced with spacer layers composed of the organic semiconductor Alq3. A coupling layer of LiF is inserted to separate the magnetized layers from the semiconductor. 'ALQ3 is an organic semiconductor material,' said Lauter. 'Normally in these systems a first magnetic layer is grown on a hard substrate so that one can get the controlled magnetic parameters. Then you grow the organic semiconductor layer, followed by another magnetic material layer, such as cobalt.' In addition to determining the effect of the LiF layers on the efficiency of the electron injection, the researchers wanted to determine the magnetic properties of the cobalt and Ni{sub 80}Fe{sub 20} as well as the interfacial properties: whether there is interdiffusion of cobalt through the LiF layer to the semiconductor, for example. The researchers used polarized neutrons at beam line 4A to probe the entire, layer-by-layer assembly of the system. 'Reflectometry with polarized neutrons is a perfect method to study thin magnetic films,' Lauter said. 'These thin films - if you put one on a substrate, you see it just like a mirror. However, this mirror has a very complicated internal multilayer structure. The neutrons look inside this complicated structure and characterize each and every interface. Due to the depth sensitivity of the method, we measure the structural and magnetic properties of each layer with the resolution of 0.5 nm. The neutron scattering results found that inserting LiF as a barrier significantly improves the quality of the interface, increasing the injection of electrons from the magnetic layer through the organic semiconductor in the spin valve and enhancing the overall properties of the system. In related work the magneti

Bardoel, Agatha A [ORNL; Lauter, Valeria [ORNL; Szulczewski, Greg J [ORNL

2012-01-01T23:59:59.000Z

203

Surfacing of the parts of Christmas tree valves  

SciTech Connect

The authors discuss the strengthening of Christmas trees for service conditions, in particular, the method of plasma spraying of the sealing surfaces of the gates of the valves with hard corrosion resistant alloys. Most frequently, cobalt- (stellite), nickel- (colmonoy), and iron-base alloys are used for surfacing. A plan is shown of the area for plasma surfacing in one of the petroleum machinery plants. It is found that the hardening of the sealing surface of gate valve parts by plasma powder surfacing with self-fluxing nickel alloys increases the reliability and life of well-head equipment.

Mordynskii, V.B.; Barsukov, V.P.; Iskakhov, A.R.; Komarcheva, E.S.

1987-07-01T23:59:59.000Z

204

A study on the use of multiple surrogate models in valve design  

Science Conference Proceedings (OSTI)

Nowadays, the use of computational fluid dynamics (CFD) in the design of valves is very common. Despite the continuing growth of computing capability, the computational cost of complex three-dimensional CFD analysis of butterfly valve maintains high, ... Keywords: DOE, butterfly valve, error analysis, multiple surrogate models, optimization

Xue Guan Song; Jeong Ju Choi; Joon-Ho Lee; Young Chul Park

2011-09-01T23:59:59.000Z

205

Probability of Safety Valve Failure-to-Reseat Following Steam and Liquid Relief: Quantitative Expert Elicitation  

Science Conference Proceedings (OSTI)

This report describes a quantitative expert elicitation to assist in the determination of the failure probability of safety valves to reseat following steam and/or liquid relief. The expert elicitation process improves the estimation of the safety valve failure-to-reseat probability and is based on expert judgment, safety valve testing programs, and experience.

2004-08-31T23:59:59.000Z

206

Worcester 1 Inch Solenoid Actuated Gas Operated VPS System Ball Valve  

SciTech Connect

1 inch Gas-operated full-port ball valve incorporates a solenoid and limit switches as integral parts of the actuator. The valve is normally open and fails safe to the closed position. The associated valve position switch is class GS.

VAN KATWIJK, C.

2000-06-06T23:59:59.000Z

207

Worcester 1 Inch Solenoid Actuated Gas Operated VPS System Ball Valve  

Science Conference Proceedings (OSTI)

1 inch Gas-operated full-pod ball valve incorporates a solenoid and limit switches as integral park of the actuator. The valve is normally open and fails safe to the closed position. The associated valve position switch is class GS.

MISKA, C.R.

2000-11-13T23:59:59.000Z

208

Properties of Lead  

Science Conference Proceedings (OSTI)

Table 4   Typical room-temperature tensile properties of selected lead alloys...strip (c) 70 10 10 ? Cast battery grid (L50775)/fully aged, air cooled 41??45 6.0??6.5 20??35 90??95 HR (d) High-strength casting (L50790)/fully aged, air cooled 52??55 7.5??8.0 20??35 90??95 HR (d) Chemical lead (L51120)/rolled sheet 18??20 2.6??2.96 42??52 75??84 HR (d) Hard lead, 96-4...

209

Site Lead TQP Standard  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Qualification Standard for the Qualification Standard for the Office of Safety and Emergency Management Evaluations Site Lead Program May 2011 Office of Enforcement and Oversight Office of Health, Safety and Security U.S. Department of Energy 1 Qualification Standard for the Office of Safety and Emergency Management Evaluations Site Lead Program A Site Lead is an individual, normally at a senior General Schedule (GS) level or Excepted Service, who is assigned the responsibility to assess and evaluate management systems, safety and health programs, and technical activities associated with U.S. Department of Energy (DOE) nuclear and non-nuclear facilities. Typically, a Site Lead has previously qualified as a Nuclear Safety Specialist or a Senior Technical Safety Manager. For exceptionally qualified individuals,

210

Leading Testing Laboratories  

Science Conference Proceedings (OSTI)

... Fax: 86-20-6196-8925 E-Mail: york.li@ledtestlab.com Send E-Mail to Laboratory: Leading Testing Laboratories ... [22/S14] EPA Integral LED Lamps v ...

2013-09-06T23:59:59.000Z

211

Air-flow regulation system for a coal gasifier  

DOE Patents (OSTI)

An improved air-flow regulator for a fixed-bed coal gasifier is provided which allows close air-flow regulation from a compressor source even though the pressure variations are too rapid for a single primary control loop to respond. The improved system includes a primary controller to control a valve in the main (large) air supply line to regulate large slow changes in flow. A secondary controller is used to control a smaller, faster acting valve in a secondary (small) air supply line parallel to the main line valve to regulate rapid cyclic deviations in air flow. A low-pass filter with a time constant of from 20 to 50 seconds couples the output of the secondary controller to the input of the primary controller so that the primary controller only responds to slow changes in the air-flow rate, the faster, cyclic deviations in flow rate sensed and corrected by the secondary controller loop do not reach the primary controller due to the high frequency rejection provided by the filter. This control arrangement provides at least a factor of 5 improvement in air-flow regulation for a coal gasifier in which air is supplied by a reciprocating compressor through a surge tank.

Fasching, George E. (Morgantown, WV)

1984-01-01T23:59:59.000Z

212

Environmental Regulators  

NLE Websites -- All DOE Office Websites (Extended Search)

and Reports Brookhaven's Environmental Regulators When it comes to the environment, Brookhaven National Laboratory must comply with the regulations of many local, state and...

213

Investigation of a rotary valving system with variable valve timing for internal combustion engines: Final technical report  

DOE Green Energy (OSTI)

The objective of the program was to provide a functional demonstration of the Hansen Rotary Valving System with Variable Valve timing (HRVS/VVT), capable of throttleless inlet charge control, as an alternative to conventional poppet-valves for use in spark ignited internal combustion engines. The goal of this new technology is to secure benefits in fuel economy, broadened torque band, vibration reduction, and overhaul accessibility. Additionally, use of the variable valve timing capability to vary the effective compression ratio is expected to improve multi-fuel tolerance and efficiency. Efforts directed at the design of HRVS components proved to be far more extensive than had been anticipated, ultimately requiring that proof-trial design/development work be performed. Although both time and funds were exhausted before optical or ion-probe types of in-cylinder investigation could be undertaken, a great deal of laboratory data was acquired during the course of the design/development work. This laboratory data is the basis for the information presented in this Final Report.

Cross, P.C.; Hansen, C.N.

1994-11-18T23:59:59.000Z

214

Application of a Plasma Powder Welding to engine valves  

SciTech Connect

In hardfacing of automobile engine valves made of heat resisting steel such as 21-4N, conventional oxy-acetylene gase welding has been currently conducted manually by well trained operators because of using cast Stellite rods as the filler. In accordance with the strong demands of automatic welding, the authors newly developed an automatically controlled Plasma Powder Welding (PPW) system. This system is characterized by the application of a high thermal density plasma arc as heat source and by using power filler which melts more easily than bar cast rods. Moreover, this PPW system has been applied to the automotive engine valve production line and resulted in the great contribution to manpower saving.

Takeuchi, Y.; Nagata, M.

1985-01-01T23:59:59.000Z

215

Application of Nanocoatings for Erosion Protection of Valve Stems  

Science Conference Proceedings (OSTI)

Damage in steam turbine valve stems is attributed to erosion from the impingement of spalled oxides present in the high-temperature flowing steam environment. Utilities and turbine engineers are currently managing the erosion and damage issues through component replacement (in some extreme cases, with component lives shorter than one year). With limited success, numerous materials have been examined as alternatives to extend component life. Erosion-resistant nanocoatings have shown superior performance t...

2010-12-19T23:59:59.000Z

216

Diffusion based degradation mechanisms in giant magnetoresistive spin valves  

Science Conference Proceedings (OSTI)

Spin valve systems based on the giant magnetoresistive effect as used, for example, in hard disks and automotive applications consist of several functional metallic thin film layers. We have identified by secondary ion mass spectrometry two main degradation mechanisms: one is related to oxygen diffusion through a protective cap layer and the other one is interdiffusion directly at the functional layers of the giant magnetoresistive stack. By choosing a suitable material as cap layer (TaN), the oxidation effect can be suppressed.

Hawraneck, Matthias [Department of Sense and Control, Infineon Technologies AG, 85579 Neubiberg (Germany); Institute for Materials Science, Technische Universitaet Darmstadt, 64287 Darmstadt (Germany); Zimmer, Juergen; Raberg, Wolfgang; Pruegl, Klemens; Schmitt, Stephan; Bever, Thomas [Department of Sense and Control, Infineon Technologies AG, 85579 Neubiberg (Germany); Flege, Stefan; Alff, Lambert [Institute for Materials Science, Technische Universitaet Darmstadt, 64287 Darmstadt (Germany)

2008-07-07T23:59:59.000Z

217

Steam Turbine Valve Actuator Condition Assessment: 2013 Update  

Science Conference Proceedings (OSTI)

This report provides nuclear and fossil plant personnel with current information on the inspection and assessment of steam turbine valve actuators. It covers the actuators that are typically found on the turbines of the two major U.S. original equipment manufacturers (OEMs), as well as those of several non-U.S. OEMs. The scope encompasses both mechanical hydraulic control (MHC) and electronic hydraulic control (EHC) types of hydraulic ...

2013-07-25T23:59:59.000Z

218

Safety and Relief Valve Testing and Maintenance Guide  

Science Conference Proceedings (OSTI)

This guide gives a broad overview of self actuated and power operated pressure relief devices (PRDs) -- safety, relief, safety relief, and power-operated relief valves -- and their application and maintenance. The non-reclosing devices, like the rupture discs, are outside the scope of this guide. The information in this guide, though directed towards the nuclear power plant personnel, will assist all power plant personnel responsible for the maintenance of PRDs. This guide can also be used by training in...

1996-10-02T23:59:59.000Z

219

The lubrication of engine valve trains equipped with ceramicized followers  

Science Conference Proceedings (OSTI)

The valve train wear characteristics of motored 2.2l and 2.3l engines were examined using ceramic and conventional metal cam followers. Under regular wear conditions with fully formulated motor oils, minimal wear was observed on the metal cam lobes running with either the ceramicized or metal followers. Running under chemically accelerated wear conditions with low quality oil, however, cam lobe wear with ceramicized followers was observed to be significantly less than that with metal followers. The difference in wear was diminished when testing high quality oils under chemically accelerated conditions. Typical testing revealed that the metal follower pads quickly developed considerable wear in a characteristic pattern, while the ceramic followers pads quickly developed considerable were in a characteristic pattern, while the ceramic followers exhibited only slight polishing. Scanning electron photographs revealed details of the used ceramic surfaces, and that wear took place by polishing and by intergranular fracture with subsequent material removal. Engine wear is a major factor that limits the life of today's passenger cars. Particularly for the newer models that have smaller but higher speed and output engines incorporating current designs such as overhead camshafts, 4-valves per cylinder and turbochargers, the valve train represents one of the highest wear components within an engine. In light of the trend towards extended drivetrain warranties, there is a strong demand for lubricant suppliers to develop engine oils with improved antiwear performance. In a parallel effort, automotive engine and component manufacturers are enhancing valve train durability with technologies that include roller followers and the use of advanced ceramic materials.

Blahey, A.G.; Habeeb, J.J.; Rogers, W.N.< 110> The lubrication of engine valve trains equipped with ceramicized followers.

1990-01-01T23:59:59.000Z

220

Sliding-gate valve for use with abrasive materials  

DOE Patents (OSTI)

The invention is a flow and pressure-sealing valve for use with abrasive solids. The valve embodies special features which provide for long, reliable operating lifetimes in solids-handling service. The valve includes upper and lower transversely slidable gates, contained in separate chambers. The upper gate provides a solids-flow control function, whereas the lower gate provides a pressure-sealing function. The lower gate is supported by means for (a) lifting that gate into sealing engagement with its seat when the gate is in its open and closed positions and (b) lowering the gate out of contact with its seat to permit abrasion-free transit of the gate between its open and closed positions. When closed, the upper gate isolates the lower gate from the solids. Because of this shielding action, the sealing surface of the lower gate is not exposed to solids during transit or when it is being lifted or lowered. The chamber containing the lower gate normally is pressurized slightly, and a sweep gas is directed inwardly across the lower-gate sealing surface during the vertical translation of the gate.

Ayers, Jr., William J. (Morgantown, WV); Carter, Charles R. (Fairmont, WV); Griffith, Richard A. (Morgantown, WV); Loomis, Richard B. (Bruceton Mills, WV); Notestein, John E. (Morgantown, WV)

1985-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

Double Shell Tank (DST) Transfer Valving Subsystem Specification  

Science Conference Proceedings (OSTI)

This specification establishes the performance requirements and provides references to the requisite codes and standards to be applied during design of the Double-Shell Tank (DST) Transfer Valving Subsystem that supports the first phase of Waste Feed Delivery. This specification establishes the performance requirements and provides references to the requisite codes and standards to be applied during design of the Double-Shell Tank (DST) Transfer Valving Subsystem that supports the first phase of Waste Feed Delivery (WFD). The DST Transfer Valving Subsystem routes waste and other media (e.g., diluent, flush water, filtered raw water) among DSTs and from the low-activity waste (LAW) and high-level waste (HLW) feed staging tanks to the River Protection Project (RPP) Privatization Contractor facility, where it will be processed into an immobilized waste form. This specification is intended to be the basis for new projects/installations (W-521, etc.). This specification is not intended to retroactively affect previously established project design criteria without specific direction by the program.

GRAVES, C.E.

2000-03-22T23:59:59.000Z

222

A WEAR MODEL FOR DIESEL ENGINE EXHAUST VALVES  

DOE Green Energy (OSTI)

The work summarized here comprises the concluding effort of a multi-year project, funded by the U.S. Department of Energy, Office of Vehicle Technologies. It supports the development of a better understanding of advanced diesel engine designs in which enhanced power density, energy efficiency, and emissions control place increasing demands upon the durability of engine materials. Many kinds of metallic alloys are used in engines depending on the operating stresses, temperatures, and chemical environments. Exhaust valves, for example, are subjected to high temperatures and repetitive surface contacts that place demands on durability and frictional characteristics of the materials. Valves must continue to seal the combustion chamber properly for thousands of hours of cyclic engine operation and under varying operating conditions. It was the focus of this effort to understand the wear processes in the valve-seat area and to develop a model for the surface deformation and wear of that important interface. An annotated bibliography is provided to illustrate efforts to understand valve wear and to investigate the factors of engine operation that affect its severity and physical manifestation. The project for which this modeling effort was the final task, involved construction of a high-temperature repetitive impact test system as well as basic tribology studies of the combined processes of mechanical wear plus oxidation at elevated temperatures. Several publications resulted from this work, and are cited in this report. The materials selected for the experimental work were high-performance alloys based on nickel and cobalt. In some cases, engine-tested exhaust valves were made available for wear analysis and to ensure that the modes of surface damage produced in experiments were simulative of service. New, production-grade exhaust valves were also used to prepare test specimens for experimental work along with the other alloy samples. Wear analysis of valves and seats run for hundreds of hours in heavy-duty diesels provided insights into the kinds of complexity that the contact conditions in engines can produce, and suggested the physical basis for the current approach to modeling. The model presented here involves four terms, two representing the valve response and two for its mating seat material. The model's structure assumes that wear that takes place under a complex combination of plastic deformation, tangential shear, and oxidation. Tribolayers form, are removed, and may reform. Layer formation affects the friction forces in the interface, and in turn, the energy available to do work on the materials to cause wear. To provide friction data for the model at various temperatures, sliding contact experiments were conducted from 22 to 850 C in a pin-on-disk apparatus at ORNL. In order to account for the behavior of different materials and engine designs, parameters in all four terms of the model can be adjusted to account for wear-in and incubation periods before the dominant wear processes evolve to their steady-state rates. For example, the deformation rate is assumed to be maximum during the early stages of operation, and then, due to material work-hardening and the increase in nominal contact area (which reduces the load per unit area), decreases to a lower rate at long times. Conversely, the rate of abrasion increases with time or number of cycles due to the build-up of oxides and tribo-layers between contact surfaces. The competition between deformation and abrasion results in complex, non-linear behavior of material loss per cycle of operation. Furthermore, these factors are affected by valve design features, such as the angle of incline of the valve seat. Several modeling scenarios are presented to demonstrate how the wear profile versus number of cycles changes in response to: (a) different relative abrasion rates of the seat and valve materials, (b) the friction coefficient as a function of temperature, (c) the relative deformation contribution of valve and seat materials, and (d) an interruption in the dominant we

Blau, Peter Julian [ORNL

2009-11-01T23:59:59.000Z

223

A tritium-compatible piezoelectric valve for the tokamak fusion test reactor  

SciTech Connect

This work describes modifications made to a commercial piezoelectric valve to make it sufficiently tritium compatible for the TFTR trritium injection scenario. The results of testing the valve for leakage and performance following a series of progressively more severe tritium exposures are also presented. Finally, a proposal for a totally radiation-compatible piezoelectric valve, suitable for tritium-burning fusion machines of the future, is decribed. 9 refs., 2 figs., 1 tab.

Coffin, D.O.; Cole, S.P.; Wilhelm, R.C.

1988-02-01T23:59:59.000Z

224

Investigation of Main Steam Safety Valve Seat/Nozzle Surface Treatments  

Science Conference Proceedings (OSTI)

This report discusses continued research in evaluating the main steam safety valve (MSSV) high first lift phenomenon (seat sticking) experienced in some Dresser 3700 series steam safety valves. Previous EPRI research (Report TR-113560) concluded that the high first lift phenomenon is the result of adhesion of the valve disk to the nozzle seat resulting in additional opening force to separate the disk from the nozzle. Replacement of the disks with disks incorporating pre-oxidized Inconel X-750 material on...

2003-05-30T23:59:59.000Z

225

Computer Based Training: Engineering Technical Training Modules - Valve Actuator v1.0  

Science Conference Proceedings (OSTI)

Valve Actuator ETTM, Version 1.0 is a computer-based training module that allows users to access training when desired and review it at their own pace. The purpose of this training module is to provide a basic understanding of the various types of power valve actuators used in nuclear power plants and their characteristics. This module will also provide an understanding of valve actuator applications, selection, accessory requirements, and capabilities. This computer-based training (CBT) module is intend...

2009-12-04T23:59:59.000Z

226

Computer Based Training: Engineering Technical Training Module (ETTM) Relief and Safety Valves v1.0  

Science Conference Proceedings (OSTI)

Relief and Safety Valves ETTM, Version 1.0 is a computer45based training module that allows users to access training when desired and review it at their own pace. This module provides information about the types of valves, requirements surrounding their performance, characteristics and selection of these valves, as well as testing requirements. Additionally, it describes design considerations and system interactions. This training should be used for position specific and/or continuing training for indivi...

2009-11-02T23:59:59.000Z

227

Safety Valve Performance Considerations During High-Pressure Station Black-Out Severe Accidents  

Science Conference Proceedings (OSTI)

An assessment of the operating history and test performance of pressurizer safety valves (PSVs) and main steam safety valves (MSSVs) has led to new conclusions on their expected performance during high-pressure station blackout (SBO) severe accident conditions. This report updates conclusions documented in Volume I, focusing on thermal-hydraulic considerations surrounding the reactor coolant system response to an SBO and valve lifts during an SBO event. The report also reconsiders PSV and MSSV tests and ...

1998-01-02T23:59:59.000Z

228

EPRI/C-E PWR Safety Valve Test Report, Volume 10: Piping Structural Response Results  

Science Conference Proceedings (OSTI)

EPRI at the request of the PWR Utilities developed an overall program for the testing of PWR primary system safety and relief valves. This program was in response to NUREG 0578 Item 2.1.2 and NUREG 0737 Item II.D.l.A requirements.This report documents the results of safety valve testing performed as part of the overall program at the EPRI/C-E Valve Test Facility located at Combustion Engineering's Kreisinger Development Laboratory, Windsor, Connecticut. Seven safety valves ...

1983-04-01T23:59:59.000Z

229

A means for positively seating a piezoceramic element in a piezoelectric valve during inlet gas injection  

DOE Patents (OSTI)

This invention is comprised of a piezoelectric valve in a gas delivery system which includes a piezoceramic element bonded to a valve seal and disposed over a valve seat, and retained in position by an O-ring and a retainer; and insulating ball normally biased by a preload spring against the piezoceramic element; and inlet gas port positioned such that upon admission of inlet gas into the valve. The piezoceramic element is positively seated. The inelt gas port is located only on the side of the piezoceramic element opposite the seal.

Wright, K.E.

1993-12-31T23:59:59.000Z

230

Cascaded'' pilot regulators help reduce LPG loss in hot weather  

SciTech Connect

Fina Oil and Chemical Co. and Fisher Controls International used engineering resourcefulness to overcome heat-induced product loss from LPG storage bullets at Fina's Port Arthur, Tex., refinery. Fina had installed Fisher's Easy Joe 399A-6365, a pilot-operated, back-pressure-type regulator, on its LPG storage facility in 1991 as part of a fuel products modernization project. The regulators helped control the accumulation of noncondensible vapors, which collect in the storage bullets above the LPG. But summer heat extremes and surges in the tanks and lines made it possible for the operating pressure to increase so that the safety relief valve was activated before the pilot regulator was able to stabilize the pressure. The installation of pilot-type regulators, in cascaded, or series, formation, reduced product venting through relief valves.

1994-08-08T23:59:59.000Z

231

Understanding the function and performance of carbon-enhanced lead-acid batteries : milestone report for the DOE Energy Storage Systems program (FY11 Quarter 1: October through December 2010).  

DOE Green Energy (OSTI)

This report describes the status of research being performed under CRADA No. SC10/01771.00 (Lead/Carbon Functionality in VRLA Batteries) between Sandia National Laboratories and East Penn Manufacturing, conducted for the U.S. Department of Energy's Energy Storage Systems Program. The Quarter 1 Milestone was completed on time. The milestone entails conducting a thorough literature review to establish the current level of understanding of the mechanisms through which carbon additions to the negative active material improve valve-regulated lead-acid (VRLA) batteries. Most studies have entailed phenomenological research observing that the carbon additions prevent/reduce sulfation of the negative electrode; however, no understanding is available to provide insight into why certain carbons are successful while others are not. Impurities were implicated in one recent review of the electrochemical behavior of carbon additions. Four carbon samples have been received from East Penn Manufacturing and impurity contents have been analyzed. Carbon has been explored as an addition to lead-acid battery electrodes in a number of ways. Perhaps the most notable to date has been the hybrid 'Ultrabattery' developed by CSIRO where an asymmetric carbon-based electrochemical capacitor is combined with a lead-acid battery into a single cell, dramatically improving high-rate partial-state-of-charge (HRPSoC) operation. As illustrated below, the 'Ultrabattery' is a hybrid device constructed using a traditional lead-acid battery positive plate (i.e., PbO{sub 2}) and a negative electrode consisting of a carbon electrode in parallel with a lead-acid negative plate. This device exhibits a dramatically improved cycle life over traditional VRLA batteries, as well as increased charge power and charge acceptance. The 'Ultrabattery' has been produced successfully by both The Furukawa Battery Co. and East Penn Manufacturing. An example illustrating the dramatic improvement in cycle life of the Ultrabattery over a conventional VRLA battery is shown in the graph.

Shane, R. (East Penn Manufacturing, Lyon Station, PA); Enos, David George; Hund, Thomas D.

2011-05-01T23:59:59.000Z

232

Understanding the function and performance of carbon-enhanced lead-acid batteries : milestone report for the DOE Energy Storage Systems program (FY11 Quarter 2: January through March 2011).  

DOE Green Energy (OSTI)

This report describes the status of research being performed under CRADA No. SC10/01771.00 (Lead/Carbon Functionality in VRLA Batteries) between Sandia National Laboratories and East Penn Manufacturing, conducted for the U.S. Department of Energy's Energy Storage Systems Program. The Quarter 2 Milestone was completed on time. The milestone entails an ex situ analysis of the four carbons that have been added to the negative active material of valve-regulated lead-acid (VRLA) batteries for the purposes of this study. The four carbons selected for this study were a graphitic carbon, a carbon black, an activated carbon, and acetylene black. The morphology, crystallinity, and impurity contents of each of the four carbons were analyzed; results were consistent with previous data. Cycling on a subset of the received East Penn cells containing different carbons (and a control) has been initiated. Carbon has been explored as an addition to lead-acid battery electrodes in a number of ways. Perhaps the most notable to date has been the hybrid 'Ultrabattery' developed by CSIRO where an asymmetric carbon-based electrochemical capacitor is combined with a lead-acid battery into a single cell, dramatically improving high-rate partial-state-of-charge (HRPSoC) operation. As illustrated below, the 'Ultrabattery' is a hybrid device constructed using a traditional lead-acid battery positive plate (i.e., PbO{sub 2}) and a negative electrode consisting of a carbon electrode in parallel with a lead-acid negative plate. This device exhibits a dramatically improved cycle life over traditional VRLA batteries, as well as increased charge power and charge acceptance. The 'Ultrabattery' has been produced successfully by both The Furukawa Battery Co. and East Penn Manufacturing. An example illustrating the dramatic improvement in cycle life of the Ultrabattery over a conventional VRLA battery is shown.

Shane, R. (East Penn Manufacturing, Lyon Station, PA); Enos, David George; Hund, Thomas D.

2011-05-01T23:59:59.000Z

233

Understanding the function and performance of carbon-enhanced lead-acid batteries : milestone report for the DOE Energy Storage Systems program (FY11 Quarter 2: January through March 2011).  

SciTech Connect

This report describes the status of research being performed under CRADA No. SC10/01771.00 (Lead/Carbon Functionality in VRLA Batteries) between Sandia National Laboratories and East Penn Manufacturing, conducted for the U.S. Department of Energy's Energy Storage Systems Program. The Quarter 2 Milestone was completed on time. The milestone entails an ex situ analysis of the four carbons that have been added to the negative active material of valve-regulated lead-acid (VRLA) batteries for the purposes of this study. The four carbons selected for this study were a graphitic carbon, a carbon black, an activated carbon, and acetylene black. The morphology, crystallinity, and impurity contents of each of the four carbons were analyzed; results were consistent with previous data. Cycling on a subset of the received East Penn cells containing different carbons (and a control) has been initiated. Carbon has been explored as an addition to lead-acid battery electrodes in a number of ways. Perhaps the most notable to date has been the hybrid 'Ultrabattery' developed by CSIRO where an asymmetric carbon-based electrochemical capacitor is combined with a lead-acid battery into a single cell, dramatically improving high-rate partial-state-of-charge (HRPSoC) operation. As illustrated below, the 'Ultrabattery' is a hybrid device constructed using a traditional lead-acid battery positive plate (i.e., PbO{sub 2}) and a negative electrode consisting of a carbon electrode in parallel with a lead-acid negative plate. This device exhibits a dramatically improved cycle life over traditional VRLA batteries, as well as increased charge power and charge acceptance. The 'Ultrabattery' has been produced successfully by both The Furukawa Battery Co. and East Penn Manufacturing. An example illustrating the dramatic improvement in cycle life of the Ultrabattery over a conventional VRLA battery is shown.

Shane, R. (East Penn Manufacturing, Lyon Station, PA); Enos, David George; Hund, Thomas D.

2011-05-01T23:59:59.000Z

234

Observation and implications of magnetic domains in lateral spin valves  

Science Conference Proceedings (OSTI)

Co/Cu/Co lateral spin valves (LSV), with Co being the topmost layer, are in situ prepared and measured under ultrahigh vacuum conditions. The clean process yields a non-local spin signal of 0.9 m{Omega}. Scanning electron microscopy with polarization analysis (SEMPA) reveals domain structures in both magnetic electrodes that depend on the LSV dimensions. The spin signal correlates to SEMPA images as well as the anisotropic magnetoresistance of both Co magnets, revealing a strong impact of multi-domain states on the spin signal.

Mennig, J.; Matthes, F.; Buergler, D. E.; Schneider, C. M. [Peter Gruenberg Institute, Electronic Properties (PGI-6) and Juelich-Aachen Research Alliance, Fundamentals of Future Information Technology (JARA-FIT), Forschungszentrum Juelich GmbH, Juelich D-52425 (Germany)

2012-04-01T23:59:59.000Z

235

Endothelial Progenitor Cells as a Sole Source for Ex Vivo Seeding of Tissue-Engineered Heart Valves  

E-Print Network (OSTI)

Purposes: We investigated whether circulating endothelial progenitor cells (EPCs) can be used as a cell source for the creation of a tissue-engineered heart valve (TEHV). Methods: Trileaflet valved conduits were fabricated ...

Sales, Virna L.

236

Wakefield induced Losses in the Manual Valves of the TESLA Cryomodule  

E-Print Network (OSTI)

1 Wakefield induced Losses in the Manual Valves of the TESLA Cryomodule M.Dohlus,H.-P.Wedekind,K.Zapfe DeutschesElektronenSynchrotron Notkestr.85,D-22603Hamburg,Germany Abstract The beam pipe of the TESLA valves with spring type rf-shield which are presently used in the linac of the TESLA Test Facility

237

KIVA-3V: A block-structured KIVA program for engines with vertical or canted valves  

DOE Green Energy (OSTI)

This report describes an extended version of KIVA-3, known as KIVA-3V, that can model any number of vertical or canted valves in the cylinder head of an internal combustion (IC) engine. The valves are treated as solid objects that move through the mesh using the familiar snapper technique used for piston motion in KIVA-3. Because the valve motion is modeled exactly, and the valve shapes are as exact as the grid resolution will allow, the accuracy of the valve model is commensurate with that of the rest of the program. Other new features in KIVA-3V include a particle-based liquid wall film model, a new sorting subroutine that is linear in the number of nodes and preserves the original storage sequence, a mixing-controlled turbulent combustion model, and an optional RNG {kappa}-{epsilon} turbulence model. All features and capabilities of the original KIVA-3 have been retained. The grid generator, K3PREP, has been expanded to support the generation of grids with valves, along with the shaping of valve ports and runners. Graphics output options have also been expanded. The report discusses the new features, and includes four examples of grids with vertical and canted valves that are representative of IC engines in use today.

Amsden, A.A.

1997-07-01T23:59:59.000Z

238

Proceedings of the 2nd symposium on valves for coal conversion and utilization  

SciTech Connect

The 2nd symposium on valves for coal conversion and utilization was held October 15 to 17, 1980. It was sponsored by the US Department of Energy, Morgantown Energy Technology Center, in cooperation with the Valve Manufacturers Association. Seventeen papers have been entered individually into EDB and ERA. (LTN)

Maxfield, D.A. (ed.)

1981-01-01T23:59:59.000Z

239

System for detecting operating errors in a variable valve timing engine using pressure sensors  

SciTech Connect

A method and control module includes a pressure sensor data comparison module that compares measured pressure volume signal segments to ideal pressure volume segments. A valve actuation hardware remedy module performs a hardware remedy in response to comparing the measured pressure volume signal segments to the ideal pressure volume segments when a valve actuation hardware failure is detected.

Wiles, Matthew A.; Marriot, Craig D

2013-07-02T23:59:59.000Z

240

A New Operational Tests Circuit for Testing 660kV UHVDC Thyristor Valves  

Science Conference Proceedings (OSTI)

Operational test is an important measure which can guarantee safe and stable operation of UHVDC thyristor valves. HVDC thyristor modules can be performed either in a six-pulse back-to-back test circuit or in a synthetic test circuit. UHVDC thyristor ... Keywords: HVDC thyristor valve, operational tests, synthetic test circuit

Ting Xie; Tang Guang-fu; Zha Kun-peng; Gao Chong

2010-06-01T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

Nuclear Maintenance Applications Center: Air-Operated Valve Diagnostic Testing Guide  

Science Conference Proceedings (OSTI)

This report provides information for personnel involved in the performance of air-operated valve (AOV) diagnostic testing, including the benefits of using diagnostics to understand valve health and to tie information into preventive maintenance programs. It provides insights for experienced personnel as well as basic information, guidance, and instructions for personnel assigned to perform, analyze, or purchase diagnostic test equipment.

2011-12-23T23:59:59.000Z

242

Fault Detection, Diagnosis and Prediction in Electrical Valves Using Self-Organizing Maps  

Science Conference Proceedings (OSTI)

This paper presents a proactive maintenance scheme for fault detection, diagnosis and prediction in electrical valves. The proposed scheme is validated with a case study, considering a specific valve used for controlling the oil flow in a distribution ... Keywords: Fault prediction, Proactive maintenance, Self-organizing maps, Test of electromechanical systems

Luiz Fernando Gonalves; Jefferson Luiz Bosa; Tiago Roberto Balen; Marcelo Soares Lubaszewski; Eduardo Luis Schneider; Renato Ventura Henriques

2011-08-01T23:59:59.000Z

243

Endurance Tests of Valves With Cobalt-Free Hardfacing Alloys: PWR Phase Final Report  

Science Conference Proceedings (OSTI)

Gate valves hard-faced with three galling-resistant iron-base alloys and a cobalt-base standard were subjected to demanding cycling conditions in an environment simulating typical PWR primary chemistry conditions. Extensive nondestructive and destructive examinations showed that all valves with iron-base trim performed better than the cobalt-base standard after 1900 operating cycles.

1992-05-01T23:59:59.000Z

244

Hydraulically actuated fuel injector including a pilot operated spool valve assembly and hydraulic system using same  

DOE Patents (OSTI)

The present invention relates to hydraulic systems including hydraulically actuated fuel injectors that have a pilot operated spool valve assembly. One class of hydraulically actuated fuel injectors includes a solenoid driven pilot valve that controls the initiation of the injection event. However, during cold start conditions, hydraulic fluid, typically engine lubricating oil, is particularly viscous and is often difficult to displace through the relatively small drain path that is defined past the pilot valve member. Because the spool valve typically responds slower than expected during cold start due to the difficulty in displacing the relatively viscous oil, accurate start of injection timing can be difficult to achieve. There also exists a greater difficulty in reaching the higher end of the cold operating speed range. Therefore, the present invention utilizes a fluid evacuation valve to aid in displacement of the relatively viscous oil during cold start conditions.

Shafer, Scott F. (Morton, IL)

2002-01-01T23:59:59.000Z

245

Evaluation of wear resistant ceramic valve seats in gas-fueled power generation engines. Topical report, December 1991-April 1994  

SciTech Connect

This project is directed at the reduction of valve recession in natural gas-fueled engines. Ceramic valve seat inserts have been procured, installed in a Caterpillar G3516 natural gas generator set, and tested for 1000 hours. Two different silicon nitride materials are being utilized for the valve seats in addition to stock Eatonite metallic inserts. Three valve face materials are being tested. These include stock Caterpillar stellite 1 faced, stellite 6 faced, and unfaced valves. A test matrix was used to allow comparison of all three valve face materials in combination with all three insert materials. The testing is scheduled to continue for an additional 7000 hours. No problems have been encountered with the test materials. In general, it has been shown that two types of silicon nitride materials have at least short term durability in engine operation. Neither material has exhibited any deficiencies thus far. An economic analysis spreadsheet has been created to calculate potential cost savings potential using ceramic valve seat inserts. Valve recession data for the first 1000 hours shows expected trends. Exhaust valve positions are wearing more than intake valve positions. If the intake positions and all positions with unfaced valve are ignored, then ceramic inserts paired with Stellite 1 valves show the most wear.

Burrahm, R.W.; Branecky, R.J.; Sui, P.C.; Latusek, J.P.; Hsu, S.M.

1994-12-01T23:59:59.000Z

246

Why Pressure Reducing Valves (PVR's) are costing you money  

E-Print Network (OSTI)

Throughout many manufacturing facilities, colleges, commercial sites or industrial complexes, pressure reducing valves (PRV's) provide a cheap, reliable method to produce low pressure steam from a high pressure source in order to meet a process requirement or heating load. This simple method of expanding steam in a PRV creates no work and supplies the same heat content available in the high pressure steam at a more manageable low pressure. What if you could produce the same low pressure steam while saving hundreds of thousands of dollars on your electric bill and taking only a minimal hit in the available heat content? Why let steam down and get no benefit from it, when putting it through a low pressure steam turbine coupled to a generator would produce the heat you need for process with the byproduct of onsite electrical generation. This paper analyzes the costs, concerns and benefits of replacing a pressure reducing valve with a Steam Turbine Generator set including illustrations of what the marginal fuel increase would be in order to take advantage of the added benefits of clean, cheap and reliable onsite power production.

Downing, A.

2012-01-01T23:59:59.000Z

247

Low energy ion beam assisted deposition of a spin valve  

Science Conference Proceedings (OSTI)

The spin dependent electron transport in giant magnetoresistive (GMR) multilayers is significantly affected by the atomic scale structure of their interfaces. Devices with atomically flat and chemically sharp interfaces are preferred for magnetic sensor and memory applications. Recent atomic simulations of the atom-by-atom assembly of these devices indicate that near optimal interfacial structures can be created using low energy, ion assisted vapor deposition techniques with ion energies in the 5-10 eV range. A recently developed biased target ion beam deposition system has been used to experimentally test this hypothesis. Prototypical Ta/NiFe/Co/Cu/Co/FeMn/Cu spin valve structures were first grown using (simultaneous) argon ion assistance during deposition of the Co/Cu/Co trilayer part of the spin valve multilayer. Assisting ion energies of around 10 eV resulted in structures with a 30% higher magnetoresistance ratio and significantly reduced coupling field compared to samples grown with no ion assistance or with ion energies above 15 eV. These results are consistent with the atomistic simulation predictions. Other promising ion assistance schemes identified by the simulations were then used to deposit the Ta, NiFe, FeMn, and the top copper layer. A near optimal strategy was identified that resulted in the further improvement of the GMR ratio.

Quan, J. J.; Wolf, S. A.; Wadley, H. N. G. [Department of Materials Science and Engineering, School of Engineering and Applied Science, University of Virginia, Charlottesville, Virginia 22903 (United States)

2007-04-01T23:59:59.000Z

248

Fluid-driven reciprocating apparatus and valving for controlling same  

DOE Patents (OSTI)

A control valve assembly for alternately actuating a pair of fluid-driven free-piston devices by using fluid pressure communication therebetween. Each control valve is switched by a pressure signal depending on the state of its counterpart's piston. The communication logic is arranged to provide overlap of the forward strokes of the pistons, so that at least one of the pair will always be pressurized. Thus, uninterrupted pumping of liquid is made possible from a pair of free-piston pumps. In addition, the speed and frequency of piston stroking is entirely dependent on the mechanical power load applied. In the case of a pair of pumps, this enables liquid delivery at a substantially constant pressure over the full range of flow rates, from zero to maximum flow. One embodiment of the invention utilized two pairs of fluid-driven free-piston devices whereby a bipropellant liquid propulsion system may be operated, so as to provide continuous flow of both fuel and oxidizer liquids when used in rocket applications, for example.

Whitehead, John C. (Davis, CA); Toews, Hans G. (East Aurora, NY)

1993-01-01T23:59:59.000Z

249

Two-phase flow characteristics in multiple orifice valves  

SciTech Connect

This work presents an experimental investigation on the characteristics of two-phase flow through multiple orifice valve (MOV), including frictional pressure drop and void fraction. Experiments were carried out using an MOV with three different sets of discs with throat thickness-diameter ratios (s/d) of 1.41, 1.66 and 2.21. Tests were run with air and water flow rates ranging between 1.0 and 3.0 m{sup 3}/h, respectively. The two-phase flow patterns established for the experiment were bubbly and slug. Two-phase frictional multipliers, frictional pressure drop and void fraction were analyzed. The determined two-phase multipliers were compared against existing correlations for gas-liquid flows. None of the correlations tested proved capable of predicting the experimental results. The large discrepancy between predicted and measured values points at the role played by valve throat geometry and thickness-diameter ratio in the hydrodynamics of two-phase flow through MOVs. A modification to the constants in the two-phase multiplier equation used for pipe flow fitted the experimental data. A comparison between computed frictional pressure drop, calculated with the modified two-phase multiplier equation and measured pressure drop yielded better agreement, with less than 20% error. (author)

Alimonti, Claudio [Sapienza University of Rome, Department ICMA, Via Eudossiana 18, 00184 Roma (Italy); Falcone, Gioia; Bello, Oladele [The Harold Vance Department of Petroleum Engineering, Texas A and M University, 3116 TAMU, Richardson Building, College Station, TX 77843 (United States)

2010-11-15T23:59:59.000Z

250

Flow Characteristics Analysis of Widows' Creek Type Control Valve for Steam Turbine Control  

Science Conference Proceedings (OSTI)

The steam turbine converts the kinetic energy of steam to mechanical energy of rotor blades in the power conversion system of fossil and nuclear power plants. The electric output from the generator of which the rotor is coupled with that of the steam turbine depends on the rotation velocity of the steam turbine bucket. The rotation velocity is proportional to the mass flow rate of steam entering the steam turbine through valves and nozzles. Thus, it is very important to control the steam mass flow rate for the load following operation of power plants. Among various valves that control the steam turbine, the control valve is most significant. The steam flow rate is determined by the area formed by the stem disk and the seat of the control valve. While the ideal control valve linearly controls the steam mass flow rate with its stem lift, the real control valve has various flow characteristic curves pursuant to the stem lift type. Thus, flow characteristic curves are needed to precisely design the control valves manufactured for the operating conditions of nuclear power plants. OMEGA (Optimized Multidimensional Experiment Geometric Apparatus) was built to experimentally study the flow characteristics of steam flowing inside the control valve. The Widows' Creek type control valve was selected for reference. Air was selected as the working fluid in the OMEGA loop to exclude the condensation effect in this simplified approach. Flow characteristic curves were plotted by calculating the ratio of the measured mass flow rate versus the theoretical mass flow rate of the air. The flow characteristic curves are expected to be utilized to accurately design and operate the control valve for fossil as well as nuclear plants. (authors)

Yoo, Yong H.; Sohn, Myoung S.; Suh, Kune Y. [PHILOSOPHIA, Inc., Seoul National University, San 56-1 Sillim-dong, Gwanak-gu, Seoul, 151-742 (Korea, Republic of)

2006-07-01T23:59:59.000Z

251

Lead-free Technology Workshop  

Science Conference Proceedings (OSTI)

Lead-free Technology Workshop. Sponsored by: The TMS Electronic, Magnetic & Photonic Materials Division (EMPMD) Date: Sunday, February 13, 2005

252

Federal Agencies Leading by Example  

Science Conference Proceedings (OSTI)

Article on Federal agencies leading by example with water efficiency and conservation efforts. Prepared for Colorado WaterWise Newsletter.

McMordie-Stoughton, Katherine L.

2011-03-01T23:59:59.000Z

253

Alternative Regulation (Vermont)  

Energy.gov (U.S. Department of Energy (DOE))

Utility regulators, including the Public Service Board, have applied a new type of regulation, often called "alternative regulation" or "incentive regulation." There are many variants of this type...

254

Government Regulation  

E-Print Network (OSTI)

Abstract. Interest in the use of so-called voluntary approaches to supplement or replace formal environmental regulation is on the rise, both in Europe and in the United States. These approaches fall into two general ...

Ashford, Nicholas

2005-01-01T23:59:59.000Z

255

Method of accounting for code safety valve setpoint drift in safety analyses  

Science Conference Proceedings (OSTI)

In performing the safety analyses for transients that result in a challenge to the reactor coolant system (RCS) pressure boundary, the general acceptance criterion is that the peak RCS pressure not exceed the American Society of Mechanical Engineers limit of 110% of the design pressure. Without crediting non-safety-grade pressure mitigating systems, protection from this limit is mainly provided by the primary and secondary code safety valves. In theory, the combination of relief capacity and setpoints for these valves is designed to provide this protection. Generally, banks of valves are set at varying setpoints staggered by 15- to 20-psid increments to minimize the number of valves that would open by an overpressure challenge. In practice, however, when these valves are removed and tested (typically during a refueling outage), setpoints are sometimes found to have drifted by >50 psid. This drift should be accounted for during the performance of the safety analysis. This paper describes analyses performed by Yankee Atomic Electric Company (YAEC) to account for setpoint drift in safety valves from testing. The results of these analyses are used to define safety valve operability or acceptance criteria.

Rousseau, K.R.; Bergeron, P.A.

1989-01-01T23:59:59.000Z

256

Passively operated spool valve for drain-down freeze protection of thermosyphon water heaters. Final technical report  

SciTech Connect

The work done to extend the existing drain-down valve technology to provide passive drain-down freeze protection for thermosyphon-based solar water heaters is described. The basic design of the existing valve model is that of a spool valve, employing a cylindrical spool which moves axially in a mating cartridge to open and close o-rings at the two operating extremes (drain and operate) to perform the valving function. Three passive actuators to drive the basic valving mechanism were designed, fabricated, and tested. Two piping configurations used to integrate the spool valve with the thermosyphon system are described, as are the passive actuators. The three actuator designs are: photovoltaic driven, refrigerant-based bellows, and heat motor cable-drive designs. Costs are compared for the alternative actuator designs, and operating characteristics were examined for the thermosyphon system, including field tests. The market for the valve for thermosyphon systems is then assessed. (LEW)

1982-04-30T23:59:59.000Z

257

Subsurface safety valves: safety asset or safety liability  

SciTech Connect

This paper summarizes the methods used to compare the risk of a blowout for a well completed with a subsurface safety valve (SSSV) vs. a completion without an SSSV. These methods, which could be applied to any field, include a combination of SSSV reliability and conventional risk analyses. The Kuparuk River Unit Working Interest Owners recently formed a group to examine the risks associated with installing and maintaining SSSV's in the Kuparuk field. The group was charged with answering the question: ''Assuming Kuparuk field operating conditions, are SSSV's a safety asset, or do numerous operating and maintenance procedures make them a safety liability.'' The results indicate that for the Kuparuk River Unit, an SSSV becomes a safety liability when the mean time between SSSV failures is less than one year. Since current SSSV mean time to failure (MTTF) at Kuparuk is approximately 1000 days, they are considered a safety asset.

Busch, J.M.; Llewelyn, D.C.G.; Policky, B.J.

1983-10-01T23:59:59.000Z

258

Electromagnetic valve for controlling the flow of molten, magnetic material  

DOE Patents (OSTI)

An electromagnetic valve for controlling the flow of molten, magnetic material is provided, which comprises an induction coil for generating a magnetic field in response to an applied alternating electrical current, a housing, and a refractory composite nozzle. The nozzle is comprised of an inner sleeve composed of an erosion resistant refractory material (e.g., a zirconia ceramic) through which molten, magnetic metal flows, a refractory outer shell, and an intermediate compressible refractory material, e.g., unset, high alumina, thermosetting mortar. The compressible refractory material is sandwiched between the inner sleeve and outer shell, and absorbs differential expansion stresses that develop within the nozzle due to extreme thermal gradients. The sandwiched layer of compressible refractory material prevents destructive cracks from developing in the refractory outer shell.

Richter, Tomas (State College, PA)

1998-01-01T23:59:59.000Z

259

Electromagnetic valve for controlling the flow of molten, magnetic material  

DOE Patents (OSTI)

An electromagnetic valve for controlling the flow of molten, magnetic material is provided, which comprises an induction coil for generating a magnetic field in response to an applied alternating electrical current, a housing, and a refractory composite nozzle. The nozzle is comprised of an inner sleeve composed of an erosion resistant refractory material (e.g., a zirconia ceramic) through which molten, magnetic metal flows, a refractory outer shell, and an intermediate compressible refractory material, e.g., unset, high alumina, thermosetting mortar. The compressible refractory material is sandwiched between the inner sleeve and outer shell, and absorbs differential expansion stresses that develop within the nozzle due to extreme thermal gradients. The sandwiched layer of compressible refractory material prevents destructive cracks from developing in the refractory outer shell. 5 figs.

Richter, T.

1998-06-16T23:59:59.000Z

260

Strength and fatigue of NT551 silicon nitride and NT551 diesel exhaust valves  

DOE Green Energy (OSTI)

The content of this report is excerpted from Mark Andrew's Ph.D. Thesis (Andrews, 1999), which was funded by a DOE/OTT High Temperature Materials Laboratory Graduate Fellowship. It involves the characterization of NT551 and valves fabricated with it. The motivations behind using silicon nitride (Si{sub 3}N{sub 4}) as an exhaust valve for a diesel engine are presented in this section. There are several economic factors that have encouraged the design and implementation of ceramic components for internal combustion (IC) engines. The reasons for selecting the diesel engine valve for this are also presented.

Andrews, M.J.; Werezczak, A.A.; Kirkland, T.P.; Breder, K.

2000-02-01T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

Enhancement of spin-dependent scattering and improvement of microstructure in spin valves by delayed deposition  

Science Conference Proceedings (OSTI)

Si/Ta/Co/Cu/CoFeMn (or NiO) spin valves were prepared by a delayed sputtering procedure, in which depositions of Ta and followed layers were intervened by 1 h. The spin valves are found to have better coherent growth with stronger (111) preferred orientations in Co and Cu layers, compared with the traditional continuous method. At the same time, the giant magnetoresistance ratio and spin-dependent scattering are enhanced by a factor of 20%-30%. These results indicate that the coherent growth and the (111) preferred orientation can enhance the spin-dependent scattering of spin valves.

Yang, D.Z.; Wang, L.; Yang, X.J.; Zhou, S.M.; Wu, X.S.; Du, J.; Hu, A.; Zhang, X.X. [Surface Physics Laboratory (State Key Laboratory) and Department of Physics, Fudan University, Shanghai 200433 (China) and Department of Physics, Southeast University, Nanjing 210096 (China); Surface Physics Laboratory (State Key Laboratory) and Department of Physics, Fudan University, Shanghai 200433 (China); National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093 (China); Department of Physics, Hong Kong University of Science and Technology, Kowloon, Hong Kong (China)

2005-06-20T23:59:59.000Z

262

Endurance Tests of Valves With Cobalt-Free Hardfacing Alloys: BWR Phase Final Report  

Science Conference Proceedings (OSTI)

Valves hardfaced with three galling-resistant iron-base alloys (NOREM, EVERIT 50, and Deloro Stellite EB 5183) and a cobalt-base standard (Stellite 6) were subjected to stroke cycling in an environment simulating BWR chemistry conditions. Examination showed that the wear performance of valves with iron-base trim matched that of the cobalt-base standard. Yet, preferential corrosion of EB 5183 was found. Using cobalt-free alloys to replace or refurbish valves will significantly reduce released cobalt respo...

1993-03-01T23:59:59.000Z

263

High temperature superconductor current leads  

DOE Patents (OSTI)

An electrical lead having one end for connection to an apparatus in a cryogenic environment and the other end for connection to an apparatus outside the cryogenic environment. The electrical lead includes a high temperature superconductor wire and an electrically conductive material distributed therein, where the conductive material is present at the one end of the lead at a concentration in the range of from 0 to about 3% by volume, and at the other end of the lead at a concentration of less than about 20% by volume. Various embodiments are shown for groups of high temperature superconductor wires and sheaths.

Hull, John R. (Hinsdale, IL); Poeppel, Roger B. (Glen Ellyn, IL)

1995-01-01T23:59:59.000Z

264

Enabling Technologies Lead: Mark Davis  

NLE Websites -- All DOE Office Websites (Extended Search)

Technologies Technologies Lead: Mark Davis 3.2 Omics Platforms for Systems Biology Lead: Tim Tschaplinski 3.3 Advanced Pretreatment Configuration and Conditions Lead: Charles Wyman 3.1 Characterization of Biomass Features that Enhance Sugar Release Lead: Art Ragauskas 3.1.1 Support for Identification of the TOP40 Recalcitrant Lines (Gjersing) 3.1.2 In-Depth Cell Wall Characterization (Ragauskas) 3.2.1 Transcriptomics & Resequencing (Brown) 3.2.2 Proteomics (Hettich) 3.3.4 Demonstration of Improved Plants with CBP Organisms (Yee) 3.4 Computational Biology Lead: Ying Xu 3.3.1 Enhance Understanding of Pretreatment Fundamentals and Control Recalcitrance (Wyman) 3.3.2 Integrate, Optimize, and Understand Pretreatment with Advanced Plants (Wyman) 3.4.1 An Integrated Omics Data Analysis and

265

Fail Save Shut Off Valve for Filtering Systems Employing Candle Filters  

NLE Websites -- All DOE Office Websites (Extended Search)

Fail Save Shut Off Fail Save Shut Off Valve for Filtering Systems Employing Candle Filters Opportunity The Department of Energy's National Energy Technology Laboratory (NETL) is seeking licensing partners interested in implementing United States Patent Number 6,981,516 entitled "Fail save shut off valve for filtering systems employing candle filters." Disclosed in this patent is a novel fail save shut off valve system that allows fluid flow during normal operational conditions, but prevents the flow of fluids in the event of system failure upstream that causes over- pressurization. It is particularly well suited for use in conjunction with hot gas filtering systems, which utilize ceramic candle filters. Used in such a hot gas system, the fail save valve stops the flow

266

Percutaneous aortic valve replacement in a re-animated postmortem heart  

E-Print Network (OSTI)

transcatheter implantation of heart valve prosthesis for thein apex of post-mortem heart (lower view). B C A Figure 5A.descending aorta in lambs. Eur Heart J. 2002;23:1045-49. 5.

White, Jennifer; Sun, Amy; Killien, Lauren; Evangelista, Dennis

2006-01-01T23:59:59.000Z

267

Dynamic simulation of heart mitral valve with transversely isotropic material model  

E-Print Network (OSTI)

This thesis develops two methods for simulating, in the finite element setting, the material behavior of heart mitral valve leaflet tissue. First, a mixed pressure-displacement formulation is used to implement the constitutive ...

Weinberg, Eli, 1979-

2005-01-01T23:59:59.000Z

268

Safety Evaluation Report, pump and valve inservice testing program, Maine Yankee Atomic Power Station  

Science Conference Proceedings (OSTI)

This EG and G, Inc., report presents the results of our evaluation of the Maine Yankee Atomic Power Station, Inservice Testing Program for pumps and valves whose function is important to safety.

Rockhold, H.C.; Stromberg, H.M.

1985-04-01T23:59:59.000Z

269

Electro-Hydraulic Servo-Valve and Motion and Control Loading of Full Flight Simulator.  

E-Print Network (OSTI)

??The present thesis is on the subject of electro-hydraulic servo-valve (EHV), and motion and control loading of a flight simulator with EHV. The fundamentals of (more)

Shi, Wei

2010-01-01T23:59:59.000Z

270

Closed-loop, variable-valve-timing control of a controlled-auto-ignition engine  

E-Print Network (OSTI)

The objective of this study was to develop a closed-loop controller for use on a Controlled-Auto- Ignition (CAI) / Spark-Ignition (SI) mixed mode engine equipped with a variable-valve-timing (VVT) mechanism. The controller ...

Matthews, Jeffrey A., 1970-

2004-01-01T23:59:59.000Z

271

Template for Submission of Risk-Informed Inservice Testing Program for Pumps and Valves  

Science Conference Proceedings (OSTI)

Nuclear power plants must update their inservice testing program for pumps and valves to the latest ASME code every ten years. This report provides a template for requesting an alternative to the technical requirements contained in that code.

1998-09-17T23:59:59.000Z

272

Giant magnetoresistance in ion beam deposited spin-valve films with specular enhancement  

Science Conference Proceedings (OSTI)

Three different techniques, natural oxidation, remote plasma oxidation and low energy ion beam oxidation, have been proved to be equally effective in forming nano-oxide layers (NOLs) in spin-valve films for specular enhancement of giant magnetoresistance (GMR) effect. GMR values over 12% have been routinely obtained in spin-valve films with NOL, corresponding to a 30% specular enhancement over those without NOL. The consistency and robustness of the oxidation processes has been demonstrated by a very large GMR value {similar_to}19% in a dual spin-valve film with the NOLs formed in both pinned layers, the oscillatory dependence of the interlayer coupling field on Cu layer thickness in specular enhanced spin-valve films and the uniform and repeatable film performance over 5 in. substrates. {copyright} 2001 American Institute of Physics.

Sant, S.; Mao, M.; Kools, J.; Koi, K.; Iwasaki, H.; Sahashi, M.

2001-06-01T23:59:59.000Z

273

VALVE FUNNEL SPRING PIN PRESS PERFORMANCE AND FUNCTIONAL REQUIREMENTS EVALUATION FOR SPECIAL TOOLS AND EQUIPMENT  

SciTech Connect

This evaluation allows use of the valve funnel spring pin press and describes appropriate handling instructions for the tool. The engineering evaluation is required for operations and field use of special tools and equipment.

WITHERSPOON JT

2009-12-30T23:59:59.000Z

274

Granular Attrition due to Rotary Valve in a Pneumatic Conveying System  

E-Print Network (OSTI)

The rotary valve is a widely used mechanical device in many solids-handling industrial processes. However, it may also be responsible for most of the attrition effects occurring in a typical process. In this study, the ...

Yao, Jun

275

Lead in albacore: guide to lead pollution in Americans  

Science Conference Proceedings (OSTI)

Research report: The magnitude of lead contamination in canned tuna is used to explain the difference between the lead concentration in the diets of present-day U.S. consumers (0.2 ppm) and that in the diets of prehistoric peoples (/sup 1/m ls /sup 1/x0.002 ppm). It is also used to illustrate how skeletal concentrations of lead in typical Americans became elevated 500-fold above the natural concentrations measured in bones of Peruvians who lived in an unpolluted environment 1800 years ago. An unrecognized form of poisoning caused by this excessive exposure to lead may affect most U.S. consumers. (3 drawings, 59 references, 3 tables)

Settle, D.M.; Patterson, C.C.

1980-03-14T23:59:59.000Z

276

Method and apparatus utilizing valve throttling and charge stratification in the operation of an internal combustion engine  

Science Conference Proceedings (OSTI)

In an internal combustion engine this patent describes means forming a combustion chamber, a spark plug in the chamber, a piston disposed in the chamber for reciprocable movement toward and away from the spark plug, a valve member, circular seat means for the valve member, means for varying the lift of the valve member, a generally cylindrical shroud corresponding generally to the size of the seat means. The cylindrical shroud is relieved only in the direction of the spark plug so that, when the valve member is moved relative to the shroud by the lift-varying means, a stratified mixture of air and fuel is directed toward the spark plug until the lift-varying means causes the valve member to pass beyond the shroud so that during the initial lift of the valve member the stratified air and fuel mixture is directed solely toward the spark plug until the valve member passes beyond the shroud and the air and fuel mixture is directed generally through a 360/sup 0/ arc after the valve member passes beyond the shroud, and means limiting the lift of the valve member so that it does not pass the shroud during lighter loads, whereby the air and fuel mixture is directed primarily toward the spark plug until the valve member passes beyond the shroud.

Burandt, C.O.

1988-02-16T23:59:59.000Z

277

Nanostructured Coatings for Improved Erosion Resistance of Valve Stem Materials 2013 Field Test Trials Update  

Science Conference Proceedings (OSTI)

The Electric Power Research Institute- (EPRI-) developed nanostructured coatings (nanocoatings), deposited by plasma- enhanced magnetron sputtering, show great promise for improved erosion and wear resistance in many power plant applications. EPRI laboratory research in 2010 developed the processing to apply these coatings over nitrided/malcomized (hardened) steam turbine valve stems, which is described in EPRI report 1019796, Application of Nanocoatings for Erosion Protection of Valve ...

2013-12-20T23:59:59.000Z

278

AECL Qualification of Greases for Motor-Operated Valve Stem/Stem Nut Lubrication  

Science Conference Proceedings (OSTI)

The frictional characteristics of lubricants used in the actuators of motor-operated valves are critical to ensuring adequate actuator output capability. As part of the EPRI Motor-Operated Valve (MOV) Performance Prediction Program, testing was conducted at ambient temperature conditions on over 20 stem-stem nut lubricants in use in United States nuclear plants as documented in EPRI report TR-103235. Additional research has been conducted on several MOV lubricants after thermal and radiation aging under ...

1998-11-24T23:59:59.000Z

279

It's Elemental - The Element Lead  

NLE Websites -- All DOE Office Websites (Extended Search)

Thallium Thallium Previous Element (Thallium) The Periodic Table of Elements Next Element (Bismuth) Bismuth The Element Lead [Click for Isotope Data] 82 Pb Lead 207.2 Atomic Number: 82 Atomic Weight: 207.2 Melting Point: 600.61 K (327.46°C or 621.43°F) Boiling Point: 2022 K (1749°C or 3180°F) Density: 11.342 grams per cubic centimeter Phase at Room Temperature: Solid Element Classification: Metal Period Number: 6 Group Number: 14 Group Name: none What's in a name? From the Anglo-Saxon word lead. Lead's chemical symbol comes from the Latin word for waterworks, plumbum. Say what? Lead is pronounced as LED. History and Uses: Lead has been known since ancient times. It is sometimes found free in nature, but is usually obtained from the ores galena (PbS), anglesite (PbSO4), cerussite (PbCO3) and minum (Pb3O4). Although lead makes up only

280

Nuclear Maintenance Applications Center: Application Guide for Motor-Operated Valves in Nuclear Power Plants - Revision 2  

Science Conference Proceedings (OSTI)

Motor-operated gate and globe valves are widely used in both safety-related and non-safety-related systems in nuclear power plants. Their proper operation is essential for reliable plant performance and can help eliminate costly downtime. This second revision of the Application Guide for Motor-Operated Valves provides the latest in methods for conducting engineering evaluations in order to confirm that motor-operated gate, globe, and butterfly valves will perform their required function and offers sugges...

2007-08-22T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

South Dakota State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Technology Identification Home Federal and State Regulations State Regulations South Dakota State Regulations: South Dakota State of South Dakota The South Dakota...

282

Acceptance test report for the AN valve pit leak detection and low point drain assembly mock up test procedure  

SciTech Connect

This document describes The Performance Mock-up Test Procedure for the Valve Pit Leak Detection and Low Point Drain Assembly Performance Mock-Up Test Procedure.

EWER, K.L.

1999-07-20T23:59:59.000Z

283

Lead Auditor - Auditor Preparation Checklist  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Lead Auditor - Auditor Preparation Checklist Lead Auditor - Auditor Preparation Checklist |Number|Item|Status | ||Staff the Audit || ||Auditor Qualifications|| ||Audit Notification & Audit Plan Issued|| ||Auditor access issues resolved|| ||Audit team facilities|| ||Auditor audit areas / elements assigned|| ||Check lists Prepared Issued || ||Audited Org Docs to team QPP Work plans etc|| ||Past Audits to team || ||PC availability for Auditors|| ||Audit forms to auditors People Interviewed Documents reviewed Entrance Meeting Attendance Exit Meeting Attendance, Issue Development Sheet[1] Form 11 Form 21|| ||Audit protocols, conduct of auditors|| ||Entrance meeting slides|| ||Exit meeting slide outline|| ||Report Shell to Team|| ----------------------- [1] Use of this will be explained in the second article of the series

284

Who owns leaded fuel vehicles: impact of the phasedown  

DOE Green Energy (OSTI)

The US Environmental Protection Agency has promulgated regulations lowering the allowable level of lead in gasoline from 1.1 g/gal to 0.1 g/gal on January 1, 1986. Impacts of this action on minority groups were assessed in this study, focusing on household ownership of leaded-fuel vehicles, and on the number of small children residing in the households. The number of vehicles requiring leaded gasoline is declining rapidly, from 67.4 million in 1981 to 28.1 million in 1986, and 18.6 million in 1988. The share of vehicle-miles traveled by these vehicles will fall from 40% in 1981 to less than 10% in 1988. Leaded-gasoline vehicles are held by all types of households; the ownership pattern for these older vehicles is very similar to the pattern for all vehicles owned by households grouped by race of householder or region.

LaBelle, S.

1985-04-01T23:59:59.000Z

285

ISOLOK VALVE ACCEPTANCE TESTING FOR DWPF SME SAMPLING PROCESS  

Science Conference Proceedings (OSTI)

Evaluation of the Defense Waste Processing Facility (DWPF) Chemical Process Cell (CPC) cycle time identified several opportunities to improve the CPC processing time. Of the opportunities, a focus area related to optimizing the equipment and efficiency of the sample turnaround time for DWPF Analytical Laboratory was identified. The Mechanical Systems & Custom Equipment Development (MS&CED) Section of the Savannah River National Laboratory (SRNL) evaluated the possibility of using an Isolok{reg_sign} sampling valve as an alternative to the Hydragard{reg_sign} valve for taking process samples. Previous viability testing was conducted with favorable results using the Isolok sampler and reported in SRNL-STI-2010-00749 (1). This task has the potential to improve operability, reduce maintenance time and decrease CPC cycle time. This report summarizes the results from acceptance testing which was requested in Task Technical Request (TTR) HLW-DWPF-TTR-2010-0036 (2) and which was conducted as outlined in Task Technical and Quality Assurance Plan (TTQAP) SRNL-RP-2011-00145 (3). The Isolok to be tested is the same model which was tested, qualified, and installed in the Sludge Receipt Adjustment Tank (SRAT) sample system. RW-0333P QA requirements apply to this task. This task was to qualify the Isolok sampler for use in the DWPF Slurry Mix Evaporator (SME) sampling process. The Hydragard, which is the current baseline sampling method, was used for comparison to the Isolok sampling data. The Isolok sampler is an air powered grab sampler used to 'pull' a sample volume from a process line. The operation of the sampler is shown in Figure 1. The image on the left shows the Isolok's spool extended into the process line and the image on the right shows the sampler retracted and then dispensing the liquid into the sampling container. To determine tank homogeneity, a Coliwasa sampler was used to grab samples at a high and low location within the mixing tank. Data from the two locations were compared to determine if the contents of the tank were well mixed. The Coliwasa sampler is a tube with a stopper at the bottom and is designed to obtain grab samples from specific locations within the drum contents. A position paper (4) was issued to address the prototypic flow loop issues and simulant selections. A statistically designed plan (5) was issued to address the total number of samples each sampler needed to pull, to provide the random order in which samples were pulled and to group samples for elemental analysis. The TTR required that the Isolok sampler perform as well as the Hydragard sampler during these tests to ensure the acceptability of the Isolok sampler for use in the DWPF sampling cells. Procedure No.L9.4-5015 was used to document the sample parameters and process steps. Completed procedures are located in R&D Engineering job folder 23269.

Edwards, T.; Hera, K.; Coleman, C.; Jones, M.; Wiedenman, B.

2011-12-05T23:59:59.000Z

286

Heart valve cardiomyocytes of mouse embryos express the serotonin transporter SERT  

SciTech Connect

Multiple evidence demonstrate a role for serotonin and its transporter SERT in heart valve development and disease. By utilizing a Cre/loxP system driven by SERT gene expression, we recently demonstrated a regionally restricted distribution of SERT-expressing cells in developing mouse heart. In order to characterize the cell types exhibiting SERT expression within the mouse heart valves at early developmental stages, in this study we performed immunohistochemistry for Islet1 (Isl1) and connexin-43 (Cx-43) on heart sections from SERT{sup Cre/+};ROSA26R embryos previously stained with X-gal. We observed the co-localization of LacZ staining with Isl1 labelling in the outflow tract, the right ventricle and the conal region of E11.5 mouse heart. Cx-43 labelled cells co-localized with LacZ stained cells in the forming atrioventricular valves. These results demonstrate the cardiomyocyte phenotype of SERT-expressing cells in heart valves of the developing mouse heart, thus suggesting an active role of SERT in early heart valve development.

Pavone, Luigi Michele [Department of Biological Structures, Functions and Technologies, University of Naples Federico II, Via F. Delpino 1, 80137 Naples (Italy); Department of Biochemistry and Medical Biotechnologies, University of Naples Federico II, Naples (Italy)], E-mail: pavone@dbbm.unina.it; Spina, Anna; Lo Muto, Roberta; Santoro, Dionea [Department of Biological Structures, Functions and Technologies, University of Naples Federico II, Via F. Delpino 1, 80137 Naples (Italy); Department of Biochemistry and Medical Biotechnologies, University of Naples Federico II, Naples (Italy); Mastellone, Vincenzo [Department of Experimental Medicine 'G. Salvatore', University of Magna Graecia, Catanzaro (Italy); Avallone, Luigi [Department of Biological Structures, Functions and Technologies, University of Naples Federico II, Via F. Delpino 1, 80137 Naples (Italy)

2008-12-12T23:59:59.000Z

287

Uncertainty Analysis for a Virtual Flow Meter Using an Air-Handling Unit Chilled Water Valve  

SciTech Connect

A virtual water flow meter is developed that uses the chilled water control valve on an air-handling unit as a measurement device. The flow rate of water through the valve is calculated using the differential pressure across the valve and its associated coil, the valve command, and an empirically determined valve characteristic curve. Thus, the probability of error in the measurements is significantly greater than for conventionally manufactured flow meters. In this paper, mathematical models are developed and used to conduct uncertainty analysis for the virtual flow meter, and the results from the virtual meter are compared to measurements made with an ultrasonic flow meter. Theoretical uncertainty analysis shows that the total uncertainty in flow rates from the virtual flow meter is 1.46% with 95% confidence; comparison of virtual flow meter results with measurements from an ultrasonic flow meter yielded anuncertainty of 1.46% with 99% confidence. The comparable results from the theoretical uncertainty analysis and empirical comparison with the ultrasonic flow meter corroborate each other, and tend to validate the approach to computationally estimating uncertainty for virtual sensors introduced in this study.

Song, Li; Wang, Gang; Brambley, Michael R.

2013-04-28T23:59:59.000Z

288

Apparatus and method for non-invasive diagnosis and control of motor operated valve condition  

DOE Patents (OSTI)

An apparatus compares the torque from an MOV motor with the valve displacement, and from the comparison assesses MOV operating condition. A transducer measures the vibration of the housing of an MOV. The vibrations are due to the motions of the rotating elements within the housing, which motions are directly related to the motion of the valve relative to its seat. Signal processing apparatus analyzes the vibrations to recover the rotations of the rotating elements and thus the motion of the valve plug. Lost motion can also be determined (if a lost motion connection exists) by demodulating the vibration signal and thus taking into account also the lost motion. Simultaneously, the forces applied to the valve are estimated by estimating the torque between the stator and the rotor of the motor. Such torque can be estimated from measuring the input current and voltage alone, using a forgetting factor and a correction for the forgetting factor. A signature derived from relating the torque to the valve position can be used to assess the condition of the MOV, by comparing the signature to signatures for MOVs of known conditions. The vibration analysis components generate signals that relate to the position of elements in the operator. Similarly, the torque estimator estimates the torque output by any type of electric motor, whether or not part of an MOV analysis unit. 28 figs.

Lyon, R.H.; Chai, J.; Lang, J.H.; Hagman, W.H.; Umans, S.D.; Saarela, O.J.

1997-01-14T23:59:59.000Z

289

Soluble Lead Flow Battery: Soluble Lead Flow Battery Technology  

SciTech Connect

GRIDS Project: General Atomics is developing a flow battery technology based on chemistry similar to that used in the traditional lead-acid battery found in nearly every car on the road today. Flow batteries store energy in chemicals that are held in tanks outside the battery. When the energy is needed, the chemicals are pumped through the battery. Using the same basic chemistry as a traditional battery but storing its energy outside of the cell allows for the use of very low cost materials. The goal is to develop a system that is far more durable than todays lead-acid batteries, can be scaled to deliver megawatts of power, and which lowers the cost of energy storage below $100 per kilowatt hour.

None

2010-09-01T23:59:59.000Z

290

Context: Policy & Regulation  

Science Conference Proceedings (OSTI)

... Regulation of Halon and Halon Substitutes. ... Disparities in Environmental Regulations and Their Effect ... Impediments and Incentives for Incorporating ...

2011-11-17T23:59:59.000Z

291

English-Spanish glossary: offshore exploration and production, gas processing, and valves  

Science Conference Proceedings (OSTI)

This series of articles contains 3 different English-Spanish glossaries of related terms used in the oil industry. The glossary of the offshore exploration and production involves a summary of terms used in the offshore oil activity. It also includes names of singular equipment used in offshore drilling, as well as several navigation terms in relation to the floating oil structures. With the help of the Gas Processors Association it was possible to compile a glossary of gas processing with a concise selection of common terms of the industry of gas processing. The glossary of valves includes more than 200 terms of the industry of valves in a specialized glossary, and several explanations about the application and operation of valves.

Not Available

1981-12-01T23:59:59.000Z

292

Failure analyses of two ball valves used for coal-gasification applications  

SciTech Connect

Two ball valves which had failed by developing excess leakage were supplied for analyses. The 2'' (51 mm) valve had experienced 5000 cycles during 20 hrs usage in an unknown chemical environment. Wear on the ball and seats was a multi-stage process starting with breakdown of a hard chrome plating on the stainless steel ball. This eventually led to adhesive weld transfer of the stainless steel to the seat made of Stellite 6 alloy. The 6'' (152 mm) ball valve had experienced a cycling test sequence using compressed air up to 300 psig (2.07 MPa) at 850/sup 0/F (727/sup 0/K). Damage was characterized as abrasive wear caused either by particles deposited by the compressed air or by carbide particles present in the Stellite 6 alloy ball and seat hardfacing. The decrease in this alloy's compressive yield strength at the elevated test temperature contributed to increased wear rates.

Van Den Avyle, J.A.; Pope, L.E.

1982-07-01T23:59:59.000Z

293

Leadership and Leading Indicators Presentation  

NLE Websites -- All DOE Office Websites (Extended Search)

Leadership Leadership and Leading Indicators Peter S. Winokur, Ph.D., Member Defense Nuclear Facilities Safety Board Thanks to Matt Moury and Doug Minnema August 28, 2008 Objectives * A few thoughts about leadership * Actions taken by leaders * Role of leading indicators * Consider the future August 28, 2008 2 3 Safety Culture Safety culture is an organization's values and behaviors - modeled by its leaders and internalized by its members - that serve to make nuclear safety an overriding priority.* - Dating back to SEN-35-91, it's DOE Policy; - It's perishable; - EFCOG/DOE ISMS Safety Culture Task Team. *INPO, Principles for a Strong Nuclear Safety Culture, November 2004. August 28, 2008 4 Leadership & Mission Top 10 Ways To Know You Have A Safety Culture: * #1 is Leadership - the talk and the walk

294

Lead shot poisons bald eagles  

Science Conference Proceedings (OSTI)

This article describes the controversy between the US Fish and Wildlife Service, the National Wildlife Federation and the increased mortality of bald eagles. The eagles are being poisoned by preying on waterfowl which have ingested lead shot or have been wounded by shot and not recovered. The controversy has resulted in the establishment of new criteria for so-called non-toxic shot waterfowl hunting.

Cohn, J.P.

1985-09-01T23:59:59.000Z

295

Assessment of Leading Microturbine Technologies  

Science Conference Proceedings (OSTI)

Microturbines have emerged from research and development in recent years and are now commercially available in small quantities. Microturbines have penetrated several niche markets around the world, but sales have generally fallen short of expectations. Leading developers of microturbines include Bowman Power Systems, Capstone Turbine, Elliott Energy Systems, IR Energy Systems, and Turbec AB. Worldwide, approximately 20 distinct organizations are involved with the development and/or commercialization of ...

2003-01-29T23:59:59.000Z

296

An approach for modeling the valve train system to control the homogeneous combustion in a compression ignition engine  

Science Conference Proceedings (OSTI)

This paper presents an approach for modeling the valve train system to obtain a homogeneous charge compression ignition (HCCI) engine from a gasoline engine. The HCCI engines use different indirect strategies to control the start of the combustion. The ... Keywords: exhaust gas recirculation, homogeneous charge compression ignition, variable valve timing

Radu Cosgarea; Corneliu Cofaru; Mihai Aleonte; Maria Luminita Scutaru; Liviu Jelenschi; Gabriel Sandu

2011-04-01T23:59:59.000Z

297

Whitey Swagelok SCHe ball valves Provide Isolation between SCHe Purge Lines C and D and the Process Vent  

Science Conference Proceedings (OSTI)

These valves are 1/4 inch ball valves fabricated of 316 stainless steel. Packing is TFE (standard). They provide an isolation function betwen SCHe Purge Line C, (PV-V-*079), and Purge Line D, (PV-V-*080), and the Process Vent.

MISKA, C.R.

2000-09-03T23:59:59.000Z

298

Energy-Saving Control of Single-Rod Hydraulic Cylinders with Programmable Valves and Improved Working Mode Selection  

E-Print Network (OSTI)

tremendous flexibility to control the cylinder motion while decreasing the energy usage by utilizing and individual cylinder chamber pressure control for better energy saving. With a typical four-way directional energy usage. The programmable valve configuration used in this study is seen in Figure 1. Cylinder Valve

Yao, Bin

299

Fail Save Shut Off Valve for Filtering Systems Employing Candle Filters  

DOE Patents (OSTI)

The invention relates to an apparatus that acts as a fail save shut off valve. More specifically, the invention relates to a fail save shut off valve that allows fluid flow during normal operational conditions, but prevents the flow of fluids in the event of system failure upstream that causes over-pressurization. The present invention is particularly well suited for use in conjunction with hot gas filtering systems, which utilize ceramic candle filters. Used in such a hot gas system the present invention stops the flow of hot gas and prevents any particulate laden gas from entering the clean side of the system.

VanOsdol, John

2006-01-03T23:59:59.000Z

300

Why is lead so kinky?  

E-Print Network (OSTI)

We revisit the problem of the kink in the charge radius shift of neutron-rich even lead isotopes. We show that the ability of a Skyrme force to reproduce the isotope shift is determined by the occupation of the neutron 1i11/2 orbital beyond N=126 and the corresponding change it causes to deeply-bound protons orbitals with a principal quantum number of 1. Given the observed position of the single-particle energies, one must either ensure occupation is allowed through correlations, or not demand that the single-particle energies agree with experimental values at the mean-field level.

P. M. Goddard; P. D. Stevenson; A. Rios

2012-10-09T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

Free Machining Brasses with Minimized Lead Content  

Science Conference Proceedings (OSTI)

Abstract Scope, Article describes the role of lead in free machining brass and ... Similar legislative acts take care of lead content in free machined brass.

302

Lead phosphate glass compositions for optical components  

DOE Patents (OSTI)

A lead phosphate glass to which has been added indium oxide or scandium oe to improve chemical durability and provide a lead phosphate glass with good optical properties.

Sales, Brian C. (Oak Ridge, TN); Boatner, Lynn A. (Oak Ridge, TN)

1987-01-01T23:59:59.000Z

303

Concerns Regarding Lead Contamination and Radiological Controls...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Home Concerns Regarding Lead Contamination and Radiological Controls at the Nevada Test Site, INS-O-06-02 Concerns Regarding Lead Contamination and Radiological Controls at...

304

Lead Free Solder - Energy Innovation Portal  

Lead Free Solder A lead free solder, developed at The Ames Laboratory, combines tin, silver and copper in a novel alloy combination that is low ...

305

Power Marketing Administrations Leading the Nation's Transition...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Marketing Administrations Leading the Nation's Transition to a 21st Century Electric Grid Power Marketing Administrations Leading the Nation's Transition to a 21st Century Electric...

306

Numerical analysis of the heat transfer for packing design of cryogenic gate valve  

Science Conference Proceedings (OSTI)

The packing, among the components comprising the gate valve, is used to sustain the airtightness and the study on change of shape or pattern has been carried out to maximize the functions, but the study on changing the location or the size of the packing ... Keywords: cryogenic, heat transfer, liquefied natural gas, numerical analysis, packing

Si Pom Kim; Rock Won Jeon; Il Ju Hwang; Jae Hoon Lee; Won Heaop Shin

2012-04-01T23:59:59.000Z

307

Analysis on Modulation Principle of Mechanical Spring Valve Block-Type Pulse Jet  

Science Conference Proceedings (OSTI)

To take full advantage of the bottom-hole hydraulic energy to improve the drilling rate, it is proposed the technique assumption that using mechanical spring valve periodically is to block the fluid pathway, and modulating pulse jet is to increase the ... Keywords: block type, pulse jet, drilling rate, water hammer, experimental study

Ni Hongjian; Zhu Lihong; Huo Hongjun; Tang Zhiwen

2011-08-01T23:59:59.000Z

308

New electromagnetic methods for the evaluation of prosthetic heart valves (invited)  

Science Conference Proceedings (OSTI)

Prosthetic devices are being implanted at record levels as the nation ages and advances in prosthetic science are made. Devices that are implanted range from artificial limbs and hips to devices such as heart valves. Periodic evaluation of the state of the devices is of significant interest particularly in the case of prosthetics whose failure can be fatal. An example of such a device is the artificial heart valve. Heart valves are usually replaced when stenosis or incompetence is indicated. This article presents a selection of some new techniques that are being developed for the detection of outlet strut failures in Bjork-Shiley heart valves. Methods that show particular promise include a noninvasive electromagnetic method that relies on the excitation and measurement of the resonant vibration modes of the strut. An alternate approach involves the induction of currents in the outlet strut using a pair of external excitation coils. The field generated by the current induced in the strut perturbs the field generated by the excitation coils. The field perturbations are measured using a catheter-mounted gradiometer. Test results obtained using an experimental rig designed to demonstrate the proof-of-concept are presented.

Satish Udpa

2002-01-01T23:59:59.000Z

309

A valve with seat?slope proportional to flow area at all poppet positions  

Science Conference Proceedings (OSTI)

An adjustable gas?blending apparatus is hypothesized that would maintain a consistent mixture over a broad range of flowrates. The design equations for the unique valve seat required for such an apparatus are developed and solved numerically. An example seat is calculated and illustrated in table form. For preliminary study

D. W. Guillaume; D. DeVries

1991-01-01T23:59:59.000Z

310

Strength and Fatigue of NT551 Silicon Nitride and NT551 Diesel Exhaust Valves  

DOE Green Energy (OSTI)

The content of this report is excerpted from Mark Andrew's Ph.D. Thesis (Andrews, 1999), which was funded by a DOEYOTT High Temperature Materials Laboratory Graduate Fellowship. It involves the characterization of NT551 and valves fabricated with it. Greater detail of the described issues may be found in that reference or through communications with Andrew Wereszczak.

Andrews, M.J.; Wereszczak, A.A.; Kirkland, T.P.; Breder, K.

2000-02-01T23:59:59.000Z

311

Endurance tests of valves with cobalt-free hardfacing alloys: PWR phase  

SciTech Connect

Atomic Energy of Canada Limited (AECL) is conducting endurance tests on valves hard-faced with four cobalt-free alloys. The first phase of the program, in which PWR primary heat transport conditions were simulated in AECL's valve test loop, has been completed. The candidate alloys are NOREM 01, NOREM 04, EB 5183 and EVERIT 50. One valve with Stellite 6 trim served as the standard. Prior to loop testing, a baseline inaugural inspection was performed. During testing the loop was shutdown at approximately 500 cycle intervals, and the valves were disassembled for examination. The examinations included seat leak tests, profilometry, nondestructive inspection and finally destructive examination. Corrosion coupons in the loop were used to monitor any material loss due solely to corrosion mechanisms. This report summarizes the final examination results and discusses the relative performance of the candidate alloys. The results indicate that, based upon the sliding wear damage assessment and seat leakage test results, all the candidate alloys perform better than the Stellite 6 control sample. On the same basis, NOREM 04 and EB 5183 are the best of the candidate alloys, although there are only minor differences in performance among the four alloys.

Murphy, E.V.; Inglis, I. (Atomic Energy of Canada Ltd., Mississauga, ON (Canada))

1992-05-01T23:59:59.000Z

312

Temperature impacts on the set pressure of soft seated pressure relief valves  

SciTech Connect

From a safety standpoint, regardless of plant or facility type, the most important pieces of equipment are the pressure relief devices. The most critical characteristics of a pressure relief device are its set pressure and the related relieving capacity. The Set Pressure of a pressure relief device is defined as that value of increasing inlet static pressure at which the discharge becomes continuous (ASME PTC 25-1994, Performance Test Codes). To preclude an unsafe overpressure situation, the set pressure of the pressure relief device must not exceed the maximum allowable working pressure of the equipment or system being protected. Because of testing facility limitations, size or pressure, pressure relief valves intended for elevated temperature service are often set using ambient temperature air. Adjustments are made to the ambient valve opening pressures to compensate for the temperature differences. The extent of the adjustments to the pressure relief valve set pressure is important to ensure the valve will provide the required overpressure protection at the elevated in-service temperature.

Engel, J.J.; Zirps, G.T.; Gleason, R.B. [and others

1995-11-01T23:59:59.000Z

313

Predicted Effects of Tritium Exposures on Fast-Acting Piezoelectric Valves for Gas Fueling at TFTR  

SciTech Connect

The prospects for using piezoelectrically-driven valves with elastomeric or thermoplastic poppets in tritium gas service have been investigated. A modelling study of a typical valve incorporating ethylene-propylene rubber (EPR) or high density polyethylene (HDPE) was performed. Equations were developed linking applied voltage; ceramic bimorph preloading force, elastic deflection modulus, and specific deflection force (per volt applied); polymer elastic modulus, thickness, seal surface area, and compression (to make seal); elastomer compression set; thermoplastic creep modulus; and flow gap between seat and polymer tip. It was determined that, while EPR should seal the valve orifice more easily, HDPE should produce a valve flow rate vs. voltage curve less variant with time and exposure. Both should, however, be sealable and allow flow curves perturbed by less than or equal to 10% of full scale after ~100 days of exposure to 10{sup}5 Pa (1 atm) T{sub}2 gas (equivalent to ~7 x 10{sup}7 rad = 7 x 10{sup}5 Gy dosage).

Gill, J. T.; Pierce, C. W.

1985-04-01T23:59:59.000Z

314

Technical Repair Guidelines for Limitorque Models SMB 0 Through 4 Valve Actuators  

Science Conference Proceedings (OSTI)

This technical repair guide for Limitorque motor-operated valve (MOV) actuator models SMB 0 through 4 represents the third in a series of documents devoted to the comprehensive maintenance and repair of Limitorque actuators. This guide provides instructions for engineering, operations, and maintenance personnel on MOV actuator repair, maintenance, adjustment, and troubleshooting methods.

1993-02-28T23:59:59.000Z

315

Multi-lead heat sink  

DOE Patents (OSTI)

The disclosure relates to a heat sink used to protect integrated circuits from the heat resulting from soldering them to circuit boards. A tubular housing contains a slidable member which engages somewhat inwardly extending connecting rods, each of which is rotatably attached at one end to the bottom of the housing. The other end of each rod is fastened to an expandable coil spring loop. As the member is pushed downward in the housing, its bottom edge engages and forces outward the connecting rods, thereby expanding the spring so that it will fit over an integrated circuit. After the device is in place, the member is slid upward and the spring contracts about the leads of the integrated circuit. Soldering is now conducted and the spring absorbs excess heat therefrom to protect the integrated circuit. The placement steps are repeated in reverse order to remove the heat sink for use again. 4 figs.

Roose, L.D.

1984-07-03T23:59:59.000Z

316

Multi-lead heat sink  

DOE Patents (OSTI)

The disclosure relates to a heat sink used to protect integrated circuits from the heat resulting from soldering them to circuit boards. A tubular housing contains a slidable member which engages somewhat inwardly extending connecting rods, each of which is rotatably attached at one end to the bottom of the housing. The other end of each rod is fastened to an expandable coil spring loop. As the member is pushed downward in the housing, its bottom edge engages and forces outward the connecting rods, thereby expanding the spring so that it will fit over an integrated circuit. After the device is in place, the member is slid upward and the spring contracts about the leads of the integrated circuit. Soldering is now conducted and the spring absorbs excess heat therefrom to protect the integrated circuit. The placement steps are repeated in reverse order to remove the heat sink for use again.

Roose, L.D.

1982-08-25T23:59:59.000Z

317

Multi-lead heat sink  

DOE Patents (OSTI)

The disclosure relates to a heat sink used to protect integrated circuits from the heat resulting from soldering them to circuit boards. A tubular housing contains a slidable member which engages somewhat inwardly extending connecting rods, each of which is rotatably attached at one end to the bottom of the housing. The other end of each rod is fastened to an expandable coil spring loop. As the member is pushed downward in the housing, its bottom edge engages and forces outward the connecting rods, thereby expanding the spring so that it will fit over an integrated circuit. After the device is in place, the member is slid upward and the spring contracts about the leads of the integrated circuit. Soldering is now conducted and the spring absorbs excess heat therefrom to protect the integrated circuit. The placement steps are repeated in reverse order to remove the heat sink for use again.

Roose, Lars D. (Albuquerque, NM)

1984-01-01T23:59:59.000Z

318

A characterization of check valve degradation and failure experience in the nuclear power industry: 1984-1990. Volume 1  

SciTech Connect

Check valve operating problems in recent years have resulted in significant operating transients, increased cost and decreased system availability. As a result, additional attention has beau given to check valves by utilities (resulting in the formation of the Nuclear Industry Check Valve Group), as well as the US Nuclear Regulatory Commission and the American Society of Mechanical Engineers Operation and Maintenance Committee. All these organizations have the fundamental goal of ensuring reliable operation of check valves. A key ingredient to an engineering-oriented reliability improvement effort is a thorough understanding of relevant historical experience. A detailed review of historical failure data, available through the Institute of Nuclear Power Operation`s Nuclear Plant Reliability Data System, has been conducted. The focus of the review is on check valve failures that have involved significant degradation of the valve internal parts. A variety of parameters are considered, including size, age, system of service, method of failure discovery, the affected valve parts, attributed causes, and corrective actions.

Casada, D.A.; Todd, M.D. [Oak Ridge National Lab., TN (United States)] [Oak Ridge National Lab., TN (United States)

1993-09-01T23:59:59.000Z

319

The Importance of RNA Pairing Stability and Target Concentration for Regulation by MicroRNAs  

E-Print Network (OSTI)

Regulation of gene expression in eukaryotes is highly precise and complex. Changes in expression can define the fate of each cell, convert healthy tissues to diseased ones, and even lead to speciation. Regulation occurs ...

Garcia, David M

2012-01-01T23:59:59.000Z

320

Alaska State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Alaska State Regulations: Alaska State of Alaska The Alaska Oil and Gas Conservation Commission (AOGCC) regulates the drilling for and production of oil and gas resources, the...

Note: This page contains sample records for the topic "valve regulated lead" 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

Arizona State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Arizona State Regulations: Arizona State of Arizona The Arizona Geological Survey (AZGS) Oil and Gas Conservation Commission (OGCC) regulates the drilling for and production of...

322

Mississippi State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Mississippi State Regulations: Mississippi State of Mississippi The Mississippi State Oil and Gas Board (MSOGB), an independent agency, promulgates and enforces rules to regulate...

323

Results from the Cooler and Lead Tests  

E-Print Network (OSTI)

Design of Current Leads for the MICE Coupling Magnet, Proceedings International Conference of Cryogenics and Refrigeration

Green, Michael A

2010-01-01T23:59:59.000Z

324

Hematology of lead poisoning in the dog  

SciTech Connect

Dogs of all ages are subject to poisoning by lead but it is the growing dog of less than one year of age that is commonly involved in lead intoxication. The habit of chewing on objects of all kinds, particularly during the teething period, may bring the dog in contact with a sufficient amount of lead to produce acute or chronic poisoning. Lead based paint on wood, paper, and brushes is probably the most common source of lead for young dogs. Linoleum scraps and lead weights have also served to produce lead intoxication.

Schalm, O.W.; Holliday, T.A.

1975-01-01T23:59:59.000Z

325

NATIONAL LEAD COMPANY OF OHIO  

Office of Legacy Management (LM)

~y-f-hjLo-- yy; 4: j ).,Ic ~y-f-hjLo-- yy; 4: j ).,Ic +- NATIONAL LEAD COMPANY OF OHIO s _ HEALTH AND SAFETY DIVISION - ANALYTICAL DEPT. . ANALYTICAL DATA SHEET o-0 1. H. NO. TRIAL, HYGIENE AND RADIATION DEPT. AMPLE Nti.1. //- 6:itEC TEDI it/;/L 5 .,- -..-- -- -.._-. -. I --- --- 1 ANALYTICA .OATE RECeiVEDi mri /-2-v& 3 Li >,a. HCJ _-..k.-*..- -.v._ 1 NO. DISTRIBUTION OF COPIES 1 Analytlcal Labwatwy (RECORD COPP) 2 Industrial Hygiene 8 Radlation Dept. . 3' Water Treatment Plant (Far Water Smmplos Only)' t' , /,' 30 ,I7 \ I _- ' -I .;35; /z , / /-7 . jj ,j> b :3 cl /1' , i),: A,' . i] NLO-HbS-736 (REV. 10/14~6Or I. .-- . s N A T I O N A L L E A D C O M P A N Y O F O H IO H E A L T H A N D S A F E T Y DIVISION - A N A L Y T I C A L D E P T . A N A L Y T I C A L D A T A S H E E T i. I- . '4 ( '.. /a ' li 4 '. r I if 1. - I :

326

Regulating the information gatekeepers  

Science Conference Proceedings (OSTI)

Concerns about biased manipulation of search results may require intervention involving government regulation.

Patrick Vogl; Michael Barrett

2010-11-01T23:59:59.000Z

327

High-temperature superconducting current leads  

Science Conference Proceedings (OSTI)

Use of high-temperature superconductors (HTSs) for current leads to deliver power to devices at liquid helium temperature can reduce refrigeration requirements to values significantly below those achievable with conventional leads. HTS leads are now near commercial realization. Argonne National Laboratory (ANL) has developed a sinter-forge process to fabricate current leads from bismuth-based superconductors. The current-carrying capacity of these leads is five times better than that of HTS leads made by a conventional fabrication process. ANL along with Superconductivity, Inc., has developed a 1500 ampere current lead for an existing superconducting magnetic energy storage (SMES) device. With Babcock & Wilcox Company, Argonne is creating 16-kiloampere leads for use in a 0.5 MWh SMES. In a third project Argonne performed characterization testing of a existing, proprietary conduction-cooled lead being developed by Zer Res Corp.

Niemann, R.C.

1995-03-01T23:59:59.000Z

328

[Regulation of terpene metabolism  

SciTech Connect

Terpenoid oils, resins, and waxes from plants are important renewable resources. The objective of this project is to understand the regulation of terpenoid metabolism using the monoterpenes (C[sub 10]) as a model. The pathways of monoterpene biosynthesis and catabolism have been established, and the relevant enzymes characterized. Developmental studies relating enzyme levels to terpene accumulation within the oil gland sites of synthesis, and work with bioregulators, indicate that monoterpene production is controlled by terpene cyclases, the enzymes catalyzing the first step of the monoterpene pathway. As the leaf oil glands mature, cyclase levels decline and monoterpene biosynthesis ceases. Yield then decreases as the monoterpenes undergo catabolism by a process involving conversion to a glycoside and transport from the leaf glands to the root. At this site, the terpenoid is oxidatively degraded to acetate that is recycled into other lipid metabolites. During the transition from terpene biosynthesis to catabolism, the oil glands undergo dramatic ultrastructural modification. Degradation of the producing cells results in mixing of previously compartmentized monoterpenes with the catabolic enzymes, ultimately leading to yield decline. This regulatory model is being applied to the formation of other terpenoid classes (C[sub 15] C[sub 20], C[sub 30], C[sub 40]) within the oil glands. Preliminary investigations on the formation of sesquiterpenes (C[sub 15]) suggest that the corresponding cyclases may play a lesser role in determining yield of these products, but that compartmentation effects are important. From these studies, a comprehensive scheme for the regulation of terpene metabolism is being constructed. Results from this project wail have important consequences for the yield and composition of terpenoid natural products that can be made available for industrial exploitation.

Croteau, R.

1989-11-09T23:59:59.000Z

329

Replace Pressure-Reducing Valves with Backpressure Turbogenerators (International Fact Sheet), Energy Tips-Steam, Steam Tip Sheet #20c  

SciTech Connect

This English/Chinese ITP steam tip sheet on replacing pressure-reducing valves provides how-to advice for improving industrial steam systems using low-cost, proven practices and technologies.

Not Available

2010-10-01T23:59:59.000Z

330

Replace Pressure-Reducing Valves with Backpressure Turbogenerators: Office of Industrial Technologies (OIT) Steam Tip Fact Sheet No. 20  

SciTech Connect

Many industrial facilities produce steam at a higher pressure than is demanded by process requirements. Steam passes through pressure-reducing valves (PRVs, also known as letdown valves) at various locations in the steam distribution system to let down or reduce its pressure. A non-condensing or backpressure steam turbine can perform the same pressure-reducing function as a PRV, while converting steam energy into electrical energy.

2002-01-01T23:59:59.000Z

331

Regulating with Carrots, Regulating with Sticks  

E-Print Network (OSTI)

of necessary brevity. To vehicle manufacturers, inconsistent1997: 461). Motor vehicle manufacturers successfully arguedonly on engine and vehicle manufacturers. 3. Regulating

Thornton, Dorothy; Kagan, Robert; Gunningham, Neil

2006-01-01T23:59:59.000Z

332

Post-Remedial Action Report the Chapman Valve Site E I P I I  

Office of Legacy Management (LM)

for for Post-Remedial Action Report the Chapman Valve Site E I P I I I t I 1 I I I 1 I li I I Pnnted on recycledkecyclable paper 24 19 0186 1 DOE/OW21949-408 Formerly Utilized Sites Remed Contr: al Action Program (FUSRAP) L C t NO. DE-AC05-91 OR21 949 Indian Orchard, assac h.usetts November 1996 DOE/OR/2 1949-408 POST-REMEDIAL ACTION REPORT FOR THE CHAPMAN VALVE SITE INDIAN ORCHARD, MASSACHUSETTS NOVEMBER 1996 Prepared for United States Department of Energy Oak Ridge Operations Office Under Contract No. DE-AC05-91 OR2 1949 Bechtel National, Inc. Oak Ridge, Tennessee . . Bechtel Job No. 14501 CONTENTS Page . FIGURES ................................................................................... 1 .............................................................. iv

333

Effect of reactor conditions on MSIV (main steam isolation valves)-ATWS power level  

SciTech Connect

In a boiling water reactor (BWR) when there is closure of the main steam isolation valves (MSIVs), the energy generated in the core will be transferred to the pressure suppression pool (PSP) via steam flows out of the relief valves. The pool has limited capacity as a heat sink and hence, if there is no reactor trip (an ATWS event), there is the possibility that the pool temperature may rise beyond acceptable limits. The present study was undertaken to determine how the initial reactor conditions affect the power during an MSIV-ATWS event. The time of interest is during the 20-30 minute period when it is assumed that the reactor is in a quasi-equilibrium condition with the water level and pressure fixed, natural circulation conditions and no control rod movement or significant boron in the core. The initial conditions of interest are the time during the cycle and the operating state. 4 refs., 2 tabs.

Diamond, D.J.

1987-01-01T23:59:59.000Z

334

Valve Packing Performance Improvement: Sealing Technology and Plant Leakage Reduction Series  

Science Conference Proceedings (OSTI)

"Valve Packing Performance Improvement" is the seventh in a series of training modules addressing leakage at nuclear power plants. The first six modules in this series address: o Leakage management programs o Assembling bolted joints with spiral-wound gaskets o Preload requirements for bolted joints with spiral-wound gaskets o Lube oil system leakage mitigation o Leakage reduction from threaded joints o Leakage reduction from bolted joints with sheet gaskets

2002-03-28T23:59:59.000Z

335

Use of MCC-Based Motor Torque Measurements for Periodic Verification of Motor-Operated Valves  

Science Conference Proceedings (OSTI)

This report develops, justifies, and validates a motor control center- (MCC-) based motor torque periodic verification (MTPV) method for torque-switch-controlled closing strokes of rising stem motor-operated valves (MOVs) with ac motors. The report details the evaluation of motor torque data obtained from electrical measurements at the MCC and covers the use of these (and other) measurements in MOV periodic verification (PV) testing.

2006-03-30T23:59:59.000Z

336

Nuclear Maintenance Applications Center: Air-Operated Valve Maintenance Guide: Revision 2  

Science Conference Proceedings (OSTI)

An increased awareness of the importance of air-operated valves (AOVs) has led to progressively more sophisticated maintenance practices within the nuclear industry. Nonnuclear plants are also heavily dependent on reliable AOV operation. The dynamic method used by fossil power plants to satisfy transient electrical demands places additional stress on plant components, including AOVs. Therefore, there is a growing need for standardized technical guidance related to AOVs. The Electric Power Research Instit...

2008-12-18T23:59:59.000Z

337

Technical Repair Guidelines for Limitorque Model SMB-000 Valve Actuators: Revision 1  

Science Conference Proceedings (OSTI)

This technical repair guide (TRG) for Limitorque motor-operated valve (MOV) actuator model SMB-000 is the first in a series of documents devoted to the comprehensive maintenance and repair of Limitorque actuators. This guide provides instructions for engineering, operations, and maintenance personnel on MOV actuator repair, maintenance, adjustment, and troubleshooting methods. Originally published in 1989, this document has now been thoroughly revised (Revision 1) to incorporate new information and techn...

1994-10-02T23:59:59.000Z

338

November 17, 2009 HSS/Union Lead Checkpoint Meeting on Integrated Collaborative Oversight - Overview  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Meeting Points HSS Changes to Safety Structure/ HSS Integrated Collaborative Oversight Process * HSS tasked by the Deputy Secretary to lead a collaborative evaluation of, and identify options for, improving regulation/oversight of safety at DOE facilities in response to concerns expressed by the DOE Laboratories and Contractors of stringent regulations impairing competitiveness and impacting resources. * HSS Path Forward: -- Strengthen oversight function [i.e., increase nuclear safety and oversight staff] -- Assess a more effective enforcement tool: mitigation for corrective actions/enhance proactive processes to improve safety and security performance/compliance --- Focus on development of a data analysis model that will look at trends/leading

339

Incentive regulation and the regulation of incentives  

Science Conference Proceedings (OSTI)

This thesis explores the regulatory problem of incentives and the question of how to create a regulatory framework that most nearly aligns the firm's private interests with the public good. The main themes are: (1) an efficiency loss is inherent in the regulatory relationship, as long as the regulator knows less about the firm's operations than the firm itself; and (2) regulation itself is an incentive mechanism, so that the regulator can choose how to motivate the firm but now whether to do so. An analytical model is used to show the tradeoff between inducing efficient production and efficient pricing. The thesis surveys and analyzes incentive regulation mechanisms adopted by state utility commissions, using a Washington state plan as a case study. A natural extension of incentive regulation is discussed, in which the firm's reward depends on the total gain in consumer surplus rather than just the reduction in expenditures. The ability of the regulator to commit to future actions is central to incentive regulation, as well as many other aspects of regulation.

Blackmon, B.G. Jr.

1991-01-01T23:59:59.000Z

340

Spatial And Temporal Relationships Between Blood Lead And Soil Lead Concentrations In Detroit, Michigan.  

E-Print Network (OSTI)

??This study explored variations in child blood lead levels (BLLs) relative to street-side soil lead in Detroit, Michigan. Findings showed that average BLLs steadily decreased (more)

Bickel, Michael Jonathan

2010-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

Regulators, Requirements, Statutes  

NLE Websites -- All DOE Office Websites (Extended Search)

Regulators, Requirements, Statutes Regulators, Requirements, Statutes Regulators, Requirements, Statutes The Laboratory must comply with environmental laws and regulations that apply to Laboratory operations. Contact Environmental Communication & Public Involvement P.O. Box 1663 MS M996 Los Alamos, NM 87545 (505) 667-0216 Email Environmental laws and regulations LANL complies with more than 30 state and federal regulations and policies designed to protect human health and the environment. Regulators Regulators Environmental Protection Agency (EPA) EPA Homepage EPA - Region VI U.S. Department of Energy (DOE) DOE Homepage DOE Environmental Policy DOE Citizen's Advisory Board U.S. Fish and Wildlife Service (FWS) Southwest Region 2 New Mexico Environment Department (NMED) NMED Homepage NMED DOE Oversight Office

342

New York State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

New York New York State Regulations: New York State of New York The primary responsibility for regulating oil and gas activities within New York resides with the Bureau of Oil and Gas Regulation in the Division of Mineral Resources (Office of Natural Resources) of the New York State Department of Environmental Conservation (NYSDEC). Other offices and divisions within the NYSDEC administer the major environmental protection laws. Contact New York State Department of Environmental Conservation Division of Mineral Resources Bureau of Oil and Gas Regulation 625 Broadway, 3rd Floor Albany, NY 12233-6500 (518) 402-8056 (phone) (518) 402-8060 (fax) Disposal Practices and Applicable Regulations Environmental conservation rules and regulations are contained in Title 6 of the Official Compilation of Codes, Rules and Regulations of the State of New York (6 NYCRR). The rules and regulations for oil, gas and solution mining are provided in 6 NYCRR Parts 550-559.

343

Computer Use Regulation Introduction  

E-Print Network (OSTI)

Computer Use Regulation #12;Introduction · The following training materials will reference the contents of the Computer Use Regulations, but should not serve as a substitute for reading the actual responsibilities NCSU employees have under the regulations. · North Carolina State University's computer networks

Liu, Paul

344

Designing superior incentive regulation  

Science Conference Proceedings (OSTI)

The discussion begun in the February 15 issue pointed out some potential drawbacks to popular incentive drawbacks to popular incentive regulation (IR) plans, as they operate in practice. The principal drawback is that the plans can create strong incentives for recontracting by well-intentioned regulators who face strong pressures to please their constituents. The likelihood of recontracting, in turn, can diminish the incentives for superior performance presented to the regulated firm. The question that remains is whether popular IR plans like price-cap regulation (PCR) can be modified to reduce the likelihood of recontracting, and thereby restore incentives for superior performance by the regulated firm. The answer is yes'.

Sappington, D.E.M.; Weisman, D.L.

1994-03-01T23:59:59.000Z

345

NIST Leads Revision of International Coordinate Measuring ...  

Science Conference Proceedings (OSTI)

NIST Leads Revision of International Coordinate Measuring Machine Standard. ... ASME) represents the final step in a decade-long effort led by the ...

2011-04-25T23:59:59.000Z

346

Lead by Example with Smart Energy Management  

SciTech Connect

The Lead by Example with Smart Energy Management brochure describes FEMP's services, namely financing and acquisition support, technical assistance and policy, and outreach and coordination.

Not Available

2006-07-01T23:59:59.000Z

347

Lead-Zinc 2000 (Electronic Format)  

Science Conference Proceedings (OSTI)

Aug 1, 2000 ... 55-116]Primary Lead ReductionA Survey of Existing Smelters and Refineries[ pp. 117-126]Operations at the Doe Run Company's...

348

WEB RESOURCE: European Lead Free soldering NETwork  

Science Conference Proceedings (OSTI)

Feb 12, 2007 ... It initial objective is to enable electronics producers in the European Union (EU) to meet an EU directive to introduce lead-free soldering. "

349

Lead by Example with Smart Energy Management  

SciTech Connect

The Lead by Example with Smart Energy Management brochure describes FEMP's services, namely financing and acquisition support, technical assistance and policy, and outreach and coordination.

2006-07-01T23:59:59.000Z

350

Development of a chemical kinetic measurement apparatus and the determination of the reaction rate constants for lithium-lead/water interactions. Progress report, October 1990--September 1991  

DOE Green Energy (OSTI)

An experimental set-up for accurate measurement of hydrogen generation rate in Lithium-Lead (Li{sub 17}Pb{sub 83}) Steam or water interactions is being designed. The most important features of the design include a pneumatic actuated quick opening and closing butterfly valve used to control the reaction time and the placement of all measuring devices below a water line to minimize leakage of the hydrogen collected. A PC based data acquisition and control system provides remote process sequencing, acquisition and control of all major components of the set-up.

Biney, P.O.

1991-11-01T23:59:59.000Z

351

Development of a chemical kinetic measurement apparatus and the determination of the reaction rate constants for lithium-lead/water interactions  

DOE Green Energy (OSTI)

An experimental set-up for accurate measurement of hydrogen generation rate in Lithium-Lead (Li{sub 17}Pb{sub 83}) Steam or water interactions is being designed. The most important features of the design include a pneumatic actuated quick opening and closing butterfly valve used to control the reaction time and the placement of all measuring devices below a water line to minimize leakage of the hydrogen collected. A PC based data acquisition and control system provides remote process sequencing, acquisition and control of all major components of the set-up.

Biney, P.O.

1991-11-01T23:59:59.000Z

352

Lead-free solder technology transfer from ASE Americas  

DOE Green Energy (OSTI)

To safeguard the environmental friendliness of photovoltaics, the PV industry follows a proactive, long-term environmental strategy involving a life-of-cycle approach to prevent environmental damage by its processes and products from cradle to grave. Part of this strategy is to examine substituting lead-based solder on PV modules with other solder alloys. Lead is a toxic metal that, if ingested, can damage the brain, nervous system, liver and kidneys. Lead from solder in electronic products has been found to leach out from municipal waste landfills and municipal incinerator ash was found to be high in lead also because of disposed consumer electronics and batteries. Consequently, there is a movement in Europe and Japan to ban lead altogether from use in electronic products and to restrict the movement across geographical boundaries of waste containing lead. Photovoltaic modules may contain small amounts of regulated materials, which vary from one technology to another. Environmental regulations impact the cost and complexity of dealing with end-of-life PV modules. If they were classified as hazardous according to Federal or State criteria, then special requirements for material handling, disposal, record-keeping and reporting would escalate the cost of decommissioning the modules. Fthenakis showed that several of today's x-Si modules failed the US-EPA Toxicity Characteristic Leaching Procedure (TCLP) for potential leaching of Pb in landfills and also California's standard on Total Threshold Limit Concentration (TTLC) for Pb. Consequently, such modules may be classified as hazardous waste. He highlighted potential legislation in Europe and Japan which could ban or restrict the use of lead and the efforts of the printed-circuit industries in developing Pb-free solder technologies in response to such expected legislation. Japanese firms already have introduced electronic products with Pb-free solder, and one PV manufacturer in the US, ASE Americas has used a Pb-free solder exclusively in their modules since 1993. Finding a safe, reliable and cost-effective substitute for lead-containing solders is not easy. Tin/lead solder has been the standard solder technology for several decades and extensive knowledge has been gained on the practical and theoretical aspects of its use. The printed circuit and the electronics industries recently embarked on a multi-million-dollar R and D effort to develop such alternatives, focusing on material properties, manufacturing processes, cost of alloys and long-term availability and reliability. Fthenakis outlined such efforts and listed alternatives examined by the electronics industries. One of the most promising alternatives (for electronics) is the 96.5%Sn/3.5%Ag solder that ASE Americas developed and use. ASE Americas' research and independent field testing showed it is at least as reliable as the standard one. This solder is slightly more expensive than the regular Sn/Pb solder. However, to the audience gratification, Steel Heddle, a solder manufacturer, announced that they will absorb the incremental cost and will supply 96.5%Sn/3.5%Ag at the same price as the conventional Sn/Pb solder ribbon. Another issue is the low TTLC for Ag in California (i.e., 0.5 g / kg of module), but Fthenakis showed that the Sn/Ag solder will add less than 10% of this quantity (i.e., 0.05 g of Ag / kg of module). The major point made by Fthenakis was that alternatives exist that are both environmentally benign and cost-effective, and that the PV industry can only benefit by being proactive in switching to Pb-free materials, thereby exceeding the expectations of its supporters and averting potential future legislation.

FTHENAKIS,V.

1999-10-19T23:59:59.000Z

353

Shortage leads to green route to olefins  

Science Conference Proceedings (OSTI)

A new study examines a green route to glycerol via ultraviolet irradiation of fats and vegetable oils that may lead to a biobased source of acrylic acid and long-chain olefins. Shortage leads to green route to olefins Publications aocs articles bo

354

Combustion, Control, and Fuel Effects in a Spark Assisted HCCI Engine Equipped with Variable Valve Timing  

SciTech Connect

Widespread implementation of homogeneous charge compression ignition (HCCI) engines is presently hindered by stability, control, and load range issues. Although the operable HCCI speed/load range is expanding, it is likely that the initial HCCI engines will rely on conventional combustion for part of the operating cycle. In the present study, we have investigated the role of fuel properties and chemistry on the operation of a spark-assisted gasoline HCCI engine. The engine employed is a single cylinder, 500 cc, port fuel injected research engine, operating near lambda = 1.0 and equipped with hydraulic variable valve actuation. HCCI is initiated by early exhaust valve closing to retain exhaust in the cylinder, thereby increasing the cylinder gas temperature. This is also referred to as a 'negative overlap' strategy. A total of 10 custom blended gasolines and three different batches of indolene from two suppliers were run at 5 speed-load combinations and performance was characterized by timing sweeps. Within the quality of the data set, we can say the all fuels provided equivalent combustion and performance characteristics when compared at the same combustion phasing. The fuels did, however, require different degrees of retained exhaust as measured by exhaust valve closing angle to achieve the same combustion phasing. Fuels with higher octane sensitivity were found to ignite more easily or more quickly and to burn more quickly than fuels with lower octane sensitivity. This is an expected result since the engine is naturally aspirated and operates with high compression temperatures due to the high retained exhaust fraction and recompression.

Bunting, Bruce G [ORNL

2006-01-01T23:59:59.000Z

355

Fan-fold shielded electrical leads  

DOE Patents (OSTI)

Disclosed are fan-folded electrical leads made from copper cladded Kapton, for example, with the copper cladding on one side serving as a ground plane and the copper cladding on the other side being etched to form the leads. The Kapton is fan folded with the leads located at the bottom of the fan-folds. Electrical connections are made by partially opening the folds of the fan and soldering, for example, the connections directly to the ground plane and/or the lead. The fan folded arrangement produces a number of advantages, such as electrically shielding the leads from the environment, is totally non-magnetic, and has a very low thermal conductivity, while being easy to fabricate. 3 figs.

Rohatgi, R.R.; Cowan, T.E.

1996-06-11T23:59:59.000Z

356

Fan-fold shielded electrical leads  

DOE Patents (OSTI)

Fan-folded electrical leads made from copper cladded Kapton, for example, with the copper cladding on one side serving as a ground plane and the copper cladding on the other side being etched to form the leads. The Kapton is fan folded with the leads located at the bottom of the fan-folds. Electrical connections are made by partially opening the folds of the fan and soldering, for example, the connections directly to the ground plane and/or the lead. The fan folded arrangement produces a number of advantages, such as electrically shielding the leads from the environment, is totally non-magnetic, and has a very low thermal conductivity, while being easy to fabricate.

Rohatgi, Rajeev R. (Mountain View, CA); Cowan, Thomas E. (Livermore, CA)

1996-01-01T23:59:59.000Z

357

Imaging of lateral spin valves with soft x-ray microscopy  

SciTech Connect

We investigated Co/Cu lateral spin valves by means of high-resolution transmission soft x-ray microscopy with magnetic contrast that utilizes x-ray magnetic circular dichroism (XMCD). No magnetic XMCD contrast was observed at the Cu L{sub 3} absorption edge, which should directly image the spin accumulation in Cu. Although electrical transport measurements in a non-local geometry clearly detected the spin accumulation in Cu, which remained unchanged during illumination with circular polarized x-rays at the Co and Cu L{sub 3} absorption edges.

Mosendz, O.; Mihajlovic, G.; Pearson, J. E.; Fischer, P.; Im, M.-Y.; Bader, S. D.; Hoffmann, A.

2009-05-01T23:59:59.000Z

358

Reviews of ASME Section 11 pump and valve relief requests: Post Generic Letter 89-04  

SciTech Connect

This paper presents a discussion of ASME Section 11 Pump and Valve Inservice Testing relief request reviews by the NRC and their contractors. Topics that will be discussed include the scope of USNRC reviews in Technical Evaluation Reports (TERs) (and Safety Evaluation, SEs); including the basis for granting relief requests, the status of relief requests in IST Program updates, and the Generic Letter 89-04 approval process; and the level of technical detail required in submitted programs. This presentation is based on the experiences of Brookhaven National Laboratory in reviewing IST Programs for the Mechanical Engineering Branch of the US Nuclear Regulatory Commission.

DiBiasio, A.

1992-07-01T23:59:59.000Z

359

Reviews of ASME Section 11 pump and valve relief requests: Post Generic Letter 89-04  

SciTech Connect

This paper presents a discussion of ASME Section 11 Pump and Valve Inservice Testing relief request reviews by the NRC and their contractors. Topics that will be discussed include the scope of USNRC reviews in Technical Evaluation Reports (TERs) (and Safety Evaluation, SEs); including the basis for granting relief requests, the status of relief requests in IST Program updates, and the Generic Letter 89-04 approval process; and the level of technical detail required in submitted programs. This presentation is based on the experiences of Brookhaven National Laboratory in reviewing IST Programs for the Mechanical Engineering Branch of the US Nuclear Regulatory Commission.

DiBiasio, A.

1992-01-01T23:59:59.000Z

360

Combined cycle electric power plant with a steam turbine having a sliding pressure main bypass and control valve system  

SciTech Connect

A combined cycle electric power plant includes two gas turbines, a steam turbine, and a digital control system with an operator analog or manual backup. Each of the gas turbines has an exhaust heat recovery steam generator connected to a common header from which the steam is supplied by one or both of the steam generators for operating the steam turbine. The control system is of the sliding pressure type and maintains a predetermined steam pressure as a function of steam flow according to a predetermined characterization depending on the number of steam generators in service to limit the maximum steam velocity through the steam generators, and reduce the probability of water carryover into the steam turbine. Such control is always maintained by the bypass valve. The turbine control valve responds to the speed/load demand only, except when the bypass valve is closed and the rate of steam generation is insufficient to maintain a predetermined pressure flow relationship.

Uram, R.

1980-05-06T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

A visual inspection system for evaluating the interior surface of valve stems on material storage container tops  

SciTech Connect

A nondestructive inspection for evaluating the interior surface of the small diameter valve stems on material storage container tops was mandated. The specifications required that the interior surface of the valve stem have a surface finish of {number sign}16 or better. Conventional methods which utilizes mechanical stylus-type''surface analyzing equipment could not extend into the narrow 0.312 inch diameter by 1.5 inch deep hole (of the valve stem). A visual inspection system which exploits the capabilities of a high resolution fiberoptic borescope was designed and assembled to resolve this requirement. This paper discusses the design and inspection features of the aforementioned system and includes several illustrations of inspection results. 6 figs.

Pickett, C.A.

1990-12-01T23:59:59.000Z

362

A characterization of check valve degradation and failure experience in the nuclear power industry: 1991 Failures, Volume 2  

SciTech Connect

Review and characterization of check valve failures taken from the Institute of Nuclear Power Operation`s Nuclear Plant Reliability Data System was performed in accordance with part two of a three-phase project sponsored by the US Nuclear Regulatory Commission. The analysis was performed for check valve failures occurring in 1991 and is intended to update the previous analysis performed for the time period 1984--1990. To maintain consistency and for ease of the 1991 analysis presents the same parameters and cross-correlations in essentially the same format as the 1984--1990 study. Additional data was obtained for the 1991 analysis, including information related to specific check valve type. This information is presented in a separate section of the report.

McElhaney, K.L. [Oak Ridge National Lab., TN (United States)

1995-07-01T23:59:59.000Z

363

Pressure reducing regulator  

DOE Patents (OSTI)

A pressure reducing regulator that controls its downstream or outlet pressure to a fixed fraction of its upstream or inlet pressure is disclosed. The regulator includes a housing which may be of a titanium alloy, within which is located a seal or gasket at the outlet end which may be made of annealed copper, a rod, and piston, each of which may be made of high density graphite. The regulator is insensitive to temperature by virtue of being without a spring or gas sealed behind a diaphragm, and provides a reference for a system in which it is being used. The rod and piston of the regulator are constructed, for example, to have a 1/20 ratio such that when the downstream pressure is less than 1/20 of the upstream pressure the regulator opens and when the downstream pressure exceeds 1/20 of the upstream pressure the regulator closes. 10 figs.

Whitehead, J.C.; Dilgard, L.W.

1995-10-10T23:59:59.000Z

364

Alabama State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

State Regulations » Alabama State Regulations » Alabama State Regulations: Alabama State of Alabama The State Oil and Gas Board of Alabama, under the direction of the State Geologist and Oil and Gas Supervisor, is responsible for the regulation of oil and gas operations. The Board is divided into two administrative regions-north and south. The Board has broad authority in Alabama's oil and gas conservation statutes to promulgate and enforce rules and regulations to ensure the conservation and proper development of Alabama's petroleum resources. A major duty of the Board is to prevent pollution of fresh water supplies by oil, gas, salt water, or other contaminants resulting from oil and gas operations. The Alabama Department of Environmental Management (ADEM) administers the major federal environmental protection laws through regulations governing air pollution, water quality and supply, solid and hazardous waste management.

365

Regulation of natural monopolies  

E-Print Network (OSTI)

This chapter provides a comprehensive overview of the theoretical and empirical literature on the regulation of natural monopolies. It covers alternative definitions of natural monopoly, regulatory goals, alternative ...

Joskow, Paul L.

2005-01-01T23:59:59.000Z

366

Florida State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

to conserve the state's oil and gas resources and minimize environmental impacts from exploration and production operations through regulation and inspection activities. The...

367

Louisiana State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

of Natural Resources (DNR), Office of Conservation (OC), is tasked with regulating the exploration and production of oil, gas, and other hydrocarbons, as well as protecting...

368

West Virginia State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Protection (DEP) is responsible for monitoring and regulating all actions related to the exploration, drilling, storage, and production of oil and natural gas. The DEP, through...

369

Uniform Laws and Regulations  

Science Conference Proceedings (OSTI)

Page 1. Page 2. Uniform Laws and Regulations in the areas of legal metrology and engine fuel quality as adopted by the ...

2011-09-13T23:59:59.000Z

370

Nuclear Regulation (Montana)  

Energy.gov (U.S. Department of Energy (DOE))

This statute establishes a regulatory program for sources of ionizing radiation, to be administered by the Montana Department of Health and Human Services. These regulations address permitting and...

371

Uniform Laws and Regulations  

Science Conference Proceedings (OSTI)

Page 1. Uniform Laws and Regulations in the areas of legal metrology and engine fuel quality as adopted by the 96th National Conference on ...

2012-07-12T23:59:59.000Z

372

Utah State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

and Disposal). The DEQ administers Utah's environmental rules. Underground Disposal of Drilling Fluids (R649-3-25). The regulation allows injection of reserve pit drilling...

373

WIPP Documents - Federal Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Federal Regulations 40 CFR Part 191 Environmental radiation protection standards for management and disposal of spent nuclear fuel, high-level and transuranic radioactive wastes....

374

Tidal Wetlands Regulations (Connecticut)  

Energy.gov (U.S. Department of Energy (DOE))

Most activities occurring in or near tidal wetlands are regulated, and this section contains information on such activities and required permit applications for proposed activities. Applications...

375

SUMMARY OF REGULATIONS IMPLEMENTING FEDERAL POWER ACT SECTION 216 |  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SUMMARY OF REGULATIONS IMPLEMENTING FEDERAL POWER ACT SECTION 216 SUMMARY OF REGULATIONS IMPLEMENTING FEDERAL POWER ACT SECTION 216 SUMMARY OF REGULATIONS IMPLEMENTING FEDERAL POWER ACT SECTION 216 The Energy Policy Act of 2005 added section 216(h) to the Federal Power Act providing for the Department of Energy to act as the lead agency for coordinating all applicable Federal authorizations and related environmental reviews required under Federal law in order to site an electric transmission facility. The Act authorized DOE to issue any regulations necessary to implement the provisions of 216(h). SUMMARY OF REGULATIONS IMPLEMENTING FEDERAL POWER ACT SECTION 216 More Documents & Publications SUMMARY OF REGULATIONS IMPLEMENTING FEDERAL POWER ACT SECTION 216 Comments on Notice of Proposed Rulemaking for Coordination of Federal

376

Regulators warned in adopting incentive regulation  

Science Conference Proceedings (OSTI)

An Illinois Commerce Commission economist warns that regulators should be cautious about adopting incentive regulations, which are risky to consumers because of the inaccurate cost-efficiency measurement, faulty program design, and difficulties in program evaluation. The biggest problem with existing incentive programs is that they don't always produce lower rates in the long term. Properly designed and implemented, however, the programs can benefit both ratepayers and utilities. Programs which penalize bad performance without rewarding the good can cause problems. The authors outlines common characteristics of the program and recommends several incentive options.

Not Available

1985-06-01T23:59:59.000Z

377

Motor-operated valve reliability programs: Lessons learned to meet new NRC (Nuclear Regulatory Commission) requirements  

Science Conference Proceedings (OSTI)

In recent years, reliability problems have surfaced with power plant motor-operated valves (MOVs) that (a) fail to perform as designed, and/or (b) require excessive maintenance to perform their intended function. As a result, the US Nuclear Regulatory Commission (NRC) mandated certain testing and reporting requirements in inspection and enforcement bulletin 85-03 (85-03). The NRC's generic letter 89-10 (89-10) significantly expands these requirements, to include all safety-related and position-changeable MOVs. The MOV program experience at the Sacramento Municipal Utility District (SMUD) Rancho Seco plant is particularly valuable since the NRC, to a large extent, utilized this program as the prototype for 89-10's requirements. The MOV inspection, overhaul, and testing began in September 1986, with completion scheduled for December 1986. The paper discusses problems encountered, recovery plant, results of recovery planning, and lessons learned. Experience at Rancho Seco has shown that comprehensive valve programs incorporating appropriate design practices, preventive maintenance practices, and operational constraints can improve plant availability.

Anderson, M.W.; Fadel, D.P.; Fraser, P.J.

1990-06-01T23:59:59.000Z

378

Engine cooling system air venting arrangement with buoyant air purge valve  

Science Conference Proceedings (OSTI)

An air vent arrangement is described for the cooling system of an automotive type engine having a radiator with a coolant inlet. The engine has coolant passages communicating with the radiator through an outlet essentially horizontally disposed, tubing connecting the radiator inlet and coolant outlet, and a thermostat in the outlet horizontally movable to open and closed positions. A horizontally disposed air bleed bypass passage is located vertically above the thermostat connecting the coolant outlet to a portion of the tubing downstream of the thermostat bypassing the same when the thermostat is in a closed position for bleeding air from the cooling system. The bypass passage has a valve therein moveable between a position blocking flow of coolant through the same and a second position opening the passage permitting the bleed of air therethrough. The valve is buoyant and constructed and arranged to pivot from a non flowblocking air bleed position into a flow blocking position in response to flow of coolant into the bypass passage acting thereagainst.

Schnizlein, M.E.

1987-02-17T23:59:59.000Z

379

Sealing of process valves for the HEU downblending verification experiment at Portsmouth  

SciTech Connect

At the Portsmouth Gaseous Diffusion Plant in Piketon, Ohio, USA, excess inventory of highly-enriched uranium (HEU) from US defense programs is being diluted to low-enriched uranium (LEU) for commercial use. The conversion is subject to a Verification Experiment overseen by the International Atomic Energy Agency (IAEA). The Verification Experiment is making use of monitoring technologies developed and installed by several DOE laboratories. One of the measures is a system for sealing valves in the process piping, which secures the path followed by uranium hexafluoride gas (UF{sub 6}) from cylinders at the feed stations to the blend point, where the HEU is diluted with LEU. The Authenticated Item Monitoring System (AIMS) was the alternative proposed by Sandia National Laboratories that was selected by the IAEA. Approximately 30 valves were sealed by the IAEA using AIMS fiber-optic seals (AFOS). The seals employ single-core plastic fiber rated to 125 C to withstand the high-temperature conditions of the heated piping enclosures at Portsmouth. Each AFOS broadcasts authenticated seal status and state-of-health messages via a tamper-protected radio-frequency transmitter mounted outside of the heated enclosure. The messages are received by two collection stations, operated redundantly.

Baldwin, G.T.; Bartberger, J.C.; Jenkins, C.D.; Perlinski, A.W.; Schoeneman, J.L. [Sandia National Labs., Albuquerque, NM (United States); Gordon, D.M. [Brookhaven National Lab., Upton, NY (United States); Whiting, N.E. [International Atomic Energy Agency (IAEA); Bonner, T.N.; Castle, J.M. [Lockheed Martin Utility Services, Piketon, OH (United States). Portsmouth Gaseous Diffusion Plant

1998-07-01T23:59:59.000Z

380

Property:LeadAgency | Open Energy Information  

Open Energy Info (EERE)

LeadAgency LeadAgency Jump to: navigation, search Property Name LeadAgency Property Type Page Pages using the property "LeadAgency" Showing 25 pages using this property. (previous 25) (next 25) B BLM-NV-WN-ES-08-01-1310, NV-020-08-01 + BLM + C CA-017-05-051 + BLM + CA-170-02-15 + BLM + CA-650-2005-086 + BLM + CA-670-2010-107 + BLM + CA-670-2010-CX + BLM + CA-96062042 + United States Forest Service + D DOE-EA-1116 + United States Department of Energy + DOE-EA-1621 + United States Department of Energy + DOE-EA-1676 + United States Department of Energy + DOE-EA-1733 + United States Department of Energy + DOE-EA-1759 + United States Department of Energy + DOE-EA-1849 + United States Department of Energy + DOE-EA-1961 + United States Department of Energy +

Note: This page contains sample records for the topic "valve regulated lead" 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

INEEL Lead Recycling in a Moratorium Environment  

SciTech Connect

Since 1999, the Idaho National Engineering and Environmental Laboratory (INEEL) Lead Project successfully recycled over 700,000 pounds of excess INEEL lead to the private sector. On February 14, 2000, the Secretary of Energy, Bill Richardson, formalized the January 12, 2000, moratorium on recycling radioactive scrap metal that prevented the unrestricted release of recycled scrap metals to the private sector. This moratorium created significant problems for the INEEL lead recycling program and associated plans; however, through the cooperative efforts of the INEEL and Idaho State University as well as innovative planning and creative thinking the recycling issues were resolved. This collaboration has recycled over 160,000 pounds of excess lead to Idaho State University with a cost savings of over $.5M.

Kooda, K. E.; Galloway, K.; McCray, C. W.; Aitken, D. W.

2003-02-26T23:59:59.000Z

382

Coupling between Tropospheric and Stratospheric Leading Modes  

Science Conference Proceedings (OSTI)

Coupling between tropospheric and stratospheric leading modes in anomaly fields is investigated. By using daily data at many levels in addition to monthly mean data, the transition of spatial patterns and the direction and speed of the vertical ...

Hisanori Itoh; Ken-ichi Harada

2004-01-01T23:59:59.000Z

383

Lightweight, durable lead-acid batteries  

Science Conference Proceedings (OSTI)

A lightweight, durable lead-acid battery is disclosed. Alternative electrode materials and configurations are used to reduce weight, to increase material utilization and to extend service life. The electrode can include a current collector having a buffer layer in contact with the current collector and an electrochemically active material in contact with the buffer layer. In one form, the buffer layer includes a carbide, and the current collector includes carbon fibers having the buffer layer. The buffer layer can include a carbide and/or a noble metal selected from of gold, silver, tantalum, platinum, palladium and rhodium. When the electrode is to be used in a lead-acid battery, the electrochemically active material is selected from metallic lead (for a negative electrode) or lead peroxide (for a positive electrode).

Lara-Curzio, Edgar (Lenoir City, TN); An, Ke (Knoxville, TX); Kiggans, Jr., James O. (Oak Ridge, TN); Dudney, Nancy J. (Knoxville, TN); Contescu, Cristian I. (Knoxville, TN); Baker, Frederick S. (Oak Ridge, TN); Armstrong, Beth L. (Clinton, TN)

2011-09-13T23:59:59.000Z

384

Lightweight, durable lead-acid batteries  

DOE Patents (OSTI)

A lightweight, durable lead-acid battery is disclosed. Alternative electrode materials and configurations are used to reduce weight, to increase material utilization and to extend service life. The electrode can include a current collector having a buffer layer in contact with the current collector and an electrochemically active material in contact with the buffer layer. In one form, the buffer layer includes a carbide, and the current collector includes carbon fibers having the buffer layer. The buffer layer can include a carbide and/or a noble metal selected from of gold, silver, tantalum, platinum, palladium and rhodium. When the electrode is to be used in a lead-acid battery, the electrochemically active material is selected from metallic lead (for a negative electrode) or lead peroxide (for a positive electrode).

Lara-Curzio, Edgar; An, Ke; Kiggans, Jr., James O; Dudney, Nancy J; Contescu, Cristian I; Baker, Frederick S; Armstrong, Beth L

2013-05-21T23:59:59.000Z

385

The Silk Road Leads to the APS  

NLE Websites -- All DOE Office Websites (Extended Search)

The silk road leads to the APS Lori Khatchadourian (University of Michigan) and Adam Smith (The University of Chicago) switch sample mounts at the ChemMatCARS 15-ID-D beamline. The...

386

Primer on lead-acid storage batteries  

DOE Green Energy (OSTI)

This handbook was developed to help DOE facility contractors prevent accidents caused during operation and maintenance of lead-acid storage batteries. Major types of lead-acid storage batteries are discussed as well as their operation, application, selection, maintenance, and disposal (storage, transportation, as well). Safety hazards and precautions are discussed in the section on battery maintenance. References to industry standards are included for selection, maintenance, and disposal.

NONE

1995-09-01T23:59:59.000Z

387

Loss of cardiac microRNA-mediated regulation leads to dilated cardiomyopathy and heart failure  

E-Print Network (OSTI)

Rationale: Heart failure is a deadly and devastating disease that places immense costs on an aging society. To develop therapies aimed at rescuing the failing heart, it is important to understand the molecular mechanisms ...

Rao, Prakash K.

388

Governance and Regulations: U. S. to Lead or Lag in the 21st...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Event Flyer, Agenda, Panel Discussion Topics, and Speakers' Biographies Companion Book Crossing the Valley of Death - The Role of the SBIR Program by Dr. Charles Wessner...

389

4-80 Two rigid tanks connected by a valve to each other contain air at specified conditions. The volume of the second tank and the final equilibrium pressure when the valve is opened are to be determined.  

E-Print Network (OSTI)

. Treating air as an ideal gas, the volume of the second tank and the mass of air in the first tank temperatures and pressures in ideal gas calculations. Using gage pressures would result in pressure drop of 04-40 4-80 Two rigid tanks connected by a valve to each other contain air at specified conditions

Bahrami, Majid

390

Modeling and optimizing passive valve designs for the implantable Gold Micro-Shunt used in glaucoma treatment  

Science Conference Proceedings (OSTI)

Glaucoma is an age-related eye disease that causes ocular nerve damage, typically characterized by elevated intraocular pressure (IOP). Studies have shown that IOP can vary significantly on the order of days or even hours. Failure to control IOP spikes ... Keywords: Check-valve, Drainage device, Finite element analysis, Glaucoma, Intraocular pressure, MEMS

Judy L. Lin; Jason M. Clevenger

2009-06-01T23:59:59.000Z

391

NERSC seeks Computational Systems Group Lead  

NLE Websites -- All DOE Office Websites (Extended Search)

seeks Computational Systems Group Lead seeks Computational Systems Group Lead NERSC seeks Computational Systems Group Lead January 6, 2011 by Katie Antypas Note: This position is now closed. The Computational Systems Group provides production support and advanced development for the supercomputer systems at NERSC. Manage the Computational Systems Group (CSG) which provides production support and advanced development for the supercomputer systems at NERSC (National Energy Research Scientific Computing Center). These systems, which include the second fastest supercomputer in the U.S., provide 24x7 computational services for open (unclassified) science to world-wide researchers supported by DOE's Office of Science. Duties/Responsibilities Manage the Computational Systems Group's staff of approximately 10

392

Leading By Example | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Leading By Example Leading By Example Leading By Example November 3, 2011 - 3:08pm Addthis New cool roofs installed on the Energy Department’s headquarters building in Washington DC in November, 2010. | Image credit Quentin Kruger, Energy Department New cool roofs installed on the Energy Department's headquarters building in Washington DC in November, 2010. | Image credit Quentin Kruger, Energy Department Brian Costlow Director, Office of Administration Brian Costlow has won several awards for his work recently, including the Federal Energy and Water Management Award and the Energy Department Energy Management Award for Exceptional Service for his efforts to make the Department's headquarter buildings models of sustainability. Every day, employees across the Energy Department work to make America more

393

Leading By Example | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Leading By Example Leading By Example Leading By Example November 3, 2011 - 3:08pm Addthis New cool roofs installed on the Energy Department’s headquarters building in Washington DC in November, 2010. | Image credit Quentin Kruger, Energy Department New cool roofs installed on the Energy Department's headquarters building in Washington DC in November, 2010. | Image credit Quentin Kruger, Energy Department Brian Costlow Director, Office of Administration Brian Costlow has won several awards for his work recently, including the Federal Energy and Water Management Award and the Energy Department Energy Management Award for Exceptional Service for his efforts to make the Department's headquarter buildings models of sustainability. Every day, employees across the Energy Department work to make America more

394

Leading Teams and Projects | Department of Energy  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Leading Teams and Projects Leading Teams and Projects Leading Teams and Projects February 18, 2014 8:30AM EST to February 19, 2014 4:00PM EST Registration Procedure: Please use the Corporate Human Resource Information System (CHRIS) Workflow process to request training enrollment. Session: 002487 Course Code: 0001. Cost $400. For organizations not currently using the CHRIS workflow process, please follow your existing interoffice training registration process. The Office of Learning and Workforce Development (HC-20) will assess the course cost for this training session directly through each Headquarters organization's Working Capital Fund account. Field office participants should register via CHRIS. They should ensure to note the cost of the training course in the tuition field of the training request.

395

Leading Edge Technologies Inc | Open Energy Information  

Open Energy Info (EERE)

Leading Edge Technologies Inc Leading Edge Technologies Inc Jump to: navigation, search Name Leading Edge Technologies Inc Place Lakeland, Florida Product Profitable manufacturer of lithium ion batteries for consumer electronics makers that merged with Skylab Technologies Group Inc in September 2001 to form Solicore. Coordinates 35.264796°, -89.724114° Loading map... {"minzoom":false,"mappingservice":"googlemaps3","type":"ROADMAP","zoom":14,"types":["ROADMAP","SATELLITE","HYBRID","TERRAIN"],"geoservice":"google","maxzoom":false,"width":"600px","height":"350px","centre":false,"title":"","label":"","icon":"","visitedicon":"","lines":[],"polygons":[],"circles":[],"rectangles":[],"copycoords":false,"static":false,"wmsoverlay":"","layers":[],"controls":["pan","zoom","type","scale","streetview"],"zoomstyle":"DEFAULT","typestyle":"DEFAULT","autoinfowindows":false,"kml":[],"gkml":[],"fusiontables":[],"resizable":false,"tilt":0,"kmlrezoom":false,"poi":true,"imageoverlays":[],"markercluster":false,"searchmarkers":"","locations":[{"text":"","title":"","link":null,"lat":35.264796,"lon":-89.724114,"alt":0,"address":"","icon":"","group":"","inlineLabel":"","visitedicon":""}]}

396

Spray forming lead strip. Final report  

SciTech Connect

A cooperative research project was conducted between the Idaho National Engineering Laboratory (INEL) and Johnson Controls, Inc. (JCI) to adapt the INEL spray forming process to produce near-net-shape lead alloy strip. The emphasis of the work was to spray form lead strip samples at INEL, using a variety of spray conditions, for characterization at JCI. An existing glove box apparatus was modified at INEL to spray form lead. The main spray forming components were housed inside the glove box. They included a spray nozzle, tundish (crucible), substrate assembly, gas heater and furnaces to heat the nozzle and tundish. To spray form metal strip, liquid metal was pressure-fed at a controlled rate through a series of circular orifices that span the width of the nozzle. There the metal contacted high velocity, high temperature inert gas (nitrogen) which atomized the molten material into fine droplets, entrained the droplets in a directed flow, and deposited them onto glass plates that were swept through the spray plume to form strip samples. In-flight convection cooling of the droplets followed by conduction and convection cooling at the substrate resulted in rapid solidification of the deposit. During operation, the inside of the glove box was purged with an inert gas to limit the effects of in-flight oxidation of the particles and spray-formed strips, as well as to protect personnel from exposure to airborne lead particulate. Remote controls were used to start/stop the spray and control the speed and position of the substrate. In addition, substrate samples were loaded into the substrate translator manually using the gloved side ports of the box. In this way, the glove box remained closed during a series of spray trials, and was opened only when loading the crucible with a lead charge or when removing lead strip samples for shipment to JCI.

McHugh, K.

1996-04-10T23:59:59.000Z

397

Indiana State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Indiana Indiana State Regulations: Indiana State of Indiana The Indiana Department of Natural Resources (DNR) Division of Oil and Gas regulates petroleum exploration, production, and site abandonment activities, underground injection control, test hole drilling, and geophysical surveying operations. Otherwise, the Indiana Department of Environmental Management (IDEM) administers the major environmental protection laws. Contact Division of Oil and Gas (Indianapolis Central Office) 402 West Washington Street, Room 293 Indianapolis, IN 46204 (317) 232-4055 (phone) (317) 232-1550 (fax) (Division Contacts) Indiana Department of Environmental Management P.O. Box 6015 Indianapolis, IN 46206-6015 (317) 232-8603 (phone) (317) 233-6647 (fax) Disposal Practices and Applicable Regulations

398

North America: Regulation of International Electricity Trade...  

NLE Websites -- All DOE Office Websites (Extended Search)

North America: Regulation of International Electricity Trade North America: Regulation of International Electricity Trade North America: Regulation of International Electricity...

399

Investigation Of Adhesion Formation In New Stainless Steel Trim Spring Operated Pressure Relief Valves  

SciTech Connect

Examination of proof test data for new (not previously installed) stainless steel (SS) trim spring operated pressure relief valves (SOPRV) reveals that adhesions form between the seat and disc in about 46% of all such SOPRV. The forces needed to overcome these adhesions can be sufficiently large to cause the SOPRV to fail its proof test (FPT) prior to installation. Furthermore, a significant percentage of SOPRV which are found to FPT are also found to ''fail to open'' (FTO) meaning they would not relief excess pressure in the event of an overpressure event. The cases where adhesions result in FTO or FPT appear to be confined to SOPRV with diameters < 1 in and set pressures < 150 psig and the FTO are estimated to occur in 0.31% to 2.00% of this subpopulation of SS trim SOPRV. The reliability and safety implications of these finding for end-users who do not perform pre-installation testing of SOPRV are discussed.

Savannah River Site (SRS), Aiken, SC (United States); Villanova University, Villanova, PA (United States); exida, Sellersville, PA (United States)

2013-04-16T23:59:59.000Z

400

Performance Evaluation of Hot Water Efficiency Plumbing System Using Thermal Valve  

E-Print Network (OSTI)

In Korea two popular water distribution systemsthe branch type and the separate type systemshave serious drawbacks. The branch type suffers from temperature instability while the separate type suffers from excessive piping. Neither of them re-circulates water. The system proposed in this paper utilizes a water-conserving piping system with a thermostat valve. This paper compares the proposed system with that of the separate type. Our findings show that the proposed system wastes less water. After re-circulating for 78-87 seconds, water is available at set point temperature (40C). Also, when multiple water taps are in use, the average temperature deviation is less than 0.6C. Moreover, the proposed system has 50% less flow rate than the separate type system.

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

2010-08-01T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

Irradiation-controlled giant magnetoresistance of PtMn-based spin valve  

Science Conference Proceedings (OSTI)

He{sup +}-ion irradiation resulted in the direct ordering of PtMn without postannealing. Samples were irradiated with 2 MeV He{sup +} ions and a beam current of 1.08 {mu}A/cm{sup 2} such that the corresponding surface temperature was 190 deg. C. The exchange bias direction was set in situ during irradiation in a field of 900 Oe. A high giant magnetoresistance (GMR) ratio of 11% was obtained in PtMn-based spin valves after He{sup +} irradiation. The GMR is completely eliminated after it is irradiated with oxygen ions at 42 keV. Combining He{sup +} with oxygen-ion irradiation can provide magnetic patterning for GMR sensors.

Huang, S.-H.; Lai, C.-H.; Chiang, C. C.; Yang, C.-H. [Department of Materials Science and Engineering, National Tsing Huang University, 101, Section 2, Kuang Fu Road, Hsinchu, Taiwan 30013 (China)

2006-04-15T23:59:59.000Z

402

Preliminary design for hot dirty-gas control-valve test facility. Final report  

SciTech Connect

This report presents the results of a preliminary design and cost estimating effort for a facility for the testing of control valves in Hot Dirty Gas (HDGCV) service. This design was performed by Mittelhauser Corporation for the United States Department of Energy's Morgantown Energy Technology Center (METC). The objective of this effort was to provide METC with a feasible preliminary design for a test facility which could be used to evaluate valve designs under simulated service conditions and provide a technology data base for DOE and industry. In addition to the actual preliminary design of the test facility, final design/construction/operating schedules and a facility cost estimate were prepared to provide METC sufficient information with which to evaluate this design. The bases, assumptions, and limitations of this study effort are given. The tasks carried out were as follows: METC Facility Review, Environmental Control Study, Gas Generation Study, Metallurgy Review, Safety Review, Facility Process Design, Facility Conceptual Layout, Instrumentation Design, Cost Estimates, and Schedules. The report provides information regarding the methods of approach used in the various tasks involved in the completion of this study. Section 5.0 of this report presents the results of the study effort. The results obtained from the above-defined tasks are described briefly. The turnkey cost of the test facility is estimated to be $9,774,700 in fourth quarter 1979 dollars, and the annual operating cost is estimated to be $960,000 plus utilities costs which are not included because unit costs per utility were not available from METC.

Not Available

1980-01-01T23:59:59.000Z

403

Fuel additive programs at crossroads of regulation, market dynamics  

SciTech Connect

Fuel additive manufacturers, gasoline marketers and automakers seem to be forgetting about the power of the marketplace in their efforts to use additives to help reduce emissions and improve vehicle performance. Recall that the port fuel injector (PFI) and intake valve deposit (IVD) problems of the 1980s were addressed quickly by the fuels industry. In just a few months after the PFID problem surfaced, additive makers had detergents on the market, and fuel marketers followed up with an effective advertising campaign. Formal regulations came about a decade later. The solution to the BMW IVD problem was similar. BMW provided an enticing incentive for oil companies to differentiate through better additives and many did. Contrast those developments with the command-and-control approach that has been in effect since January 1995. EPA`s additive rule is working almost to perfection - if adherence to strict rules is considered. All gasolines in the US are additized, and a wide variety of packages have been developed that meet the regulatory standards. But by the measure of real-world performance, the circumstances can look quite different. And with industry finalizing a better IVD test and conducting research into the need for a combustion chamber deposit (CCD) regulation, now may be the time to limit the regulatory approach and let refiners and additive suppliers return to creating products that target excellence instead of regulatory minimums.

Adler, K.

1998-01-01T23:59:59.000Z

404

Design of regulated velocity flow assurance device for petroleum industry  

E-Print Network (OSTI)

The petroleum industry faces problems in transportation of crude petroleum be- cause of the deposition of paraffins, hydrates and asphaltenes on the insides of the pipeline. These are conventionally removed using either chemical inhibitors or mechani- cal devices, called pigs, which travel through the pipeline and mechanically scrape away the deposits. These pigs are propelled by the pipeline product itself and hence travel at the same velocity as the product. Research has indicated that cleaning would be better if the pigs are traveling at a relatively constant velocity of around 70% of the product velocity. This research utilizes the concept of regulating the bypass flow velocity in order to maintain the pig velocity. The bypass flow is regulated by the control unit based on the feedback from the turbine flowmeter, which monitors the bypass flow. A motorized butterfly valve is used for actually controlling the bypass flow. In addition to cleaning, the proposed pig utilizes on-board electronics like accelerom- eter and pressure transducers to store the data gathered during the pig run. This data can then be analyzed and the condition of the pipeline predicted. Thus, this research addresses the problem of designing a pig to maintain a constant velocity in order to achieve better cleaning. It also helps gather elementary data that can be used to predict the internal conditions in the pipe.

Yardi, Chaitanya Narendra

2004-12-01T23:59:59.000Z

405

Energy and Health Convening Lead Author (CLA)  

E-Print Network (OSTI)

Transparent Cost Database on OpenEI Leads: Austin Brown, Ryan McKeel The Transparent Cost Database provides and downloadable. http://en.openei.org/wiki/Transparent_Cost_Database Renewable Electricity Futures Study Authors) level. Additional states are being added. http://en.openei.org/wiki/GRR Navajo Generating Station

406

Quality Support G. Q. Kirk, Lead (4)  

E-Print Network (OSTI)

Division Day Shift Supervisor B. H. Cupp HFIR Plant Manager Scheduling R. C. Conaway, Lead C. G. Corley B. Valentine Maintenance Basis Authority B. G. Rothrock HFIR Operations R. J. Reagan, Manager ESH&Q L. D, Secy. Systems Engineering Y. S. Kwon, Manager HFIR Maintenance D. H. Abercrombie, Manager A. M. Aaron

407

Employment Opportunities (Consultant) Program Review Lead  

E-Print Network (OSTI)

. Working with the Program Manager, the Program Review Lead will facilitate discussions with an advisory group and will work with instructors and other subject matter experts to complete the program review of the program review process; working with instructors to develop learning plans and advising on instructional

Hitchcock, Adam P.

408

JOINT DEGREE PROGRAM LEADING TO THE  

E-Print Network (OSTI)

programs prior to beginning their graduate work. If a student decides to enter the combined program after with advanced work may be admitted to the Graduate School through the Graduate Program in Urban PlanningJOINT DEGREE PROGRAM LEADING TO THE MASTER OF URBAN PLANNING AND MASTER OF ARTS IN GEOGRAPHY DEGREE

Peterson, Blake R.

409

Lead-Free Solder: Digital Resource Center -- Getting Lead out of ...  

Science Conference Proceedings (OSTI)

ARTICLE: Public Health and Environmental Benefits of Adopting Lead-Free Solders O.A. Ogunseitan; JOM article overviewing indutrial ecology and global...

410

Interviewee Travel Regulations Scope  

NLE Websites -- All DOE Office Websites (Extended Search)

3/2012 3/2012 Interviewee Travel Regulations Scope These regulations apply to the reimbursement of round-trip travel expenses incurred by interviewees. These regulations do not apply to applicants who live within a 50-mile radius of Los Alamos based on the Rand McNally Standard Highway Mileage Guide. Reimbursement With the exception of airfare, interviewees will be reimbursed for travel expenses according to Federal travel regulations. For interviewees, airfare reimbursement is limited to the lesser of the standard coach airfare or the actual amount paid. The lowest available airfare should be obtained based on the official business dates and locations. The reimbursement amount will be based on the most direct route available between the interviewee's residence and the laboratory. Costs incurred over the lowest available fare will be the

411

New Mexico State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

New Mexico New Mexico State Regulations: New Mexico State of New Mexico The Oil Conservation Division (OCD) in the New Mexico Energy, Minerals and Natural Resources Department regulates oil and gas and geothermal operations in New Mexico. The OCD has the responsibility to gather oil and gas production data, permit new wells, establish pool rules and oil and gas allowables, issue discharge permits, enforce rules and regulations of the division, monitor underground injection wells and ensure that abandoned wells are properly plugged and the land is responsibly restored. Otherwise, the New Mexico Environment Department (NMED) administers the major environmental protection laws. The Water Quality Control Commission (WQCC), which is administratively attached to the NMED, assigns responsibility for administering its regulations to constituent agencies, including the OCD.

412

GUIDANCE REGARDING NEPA REGULATIONS  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

This memorandum was published in the Federal Register and appears at 48 Fed. Reg. 34263 (1983). Ed. Note] This memorandum was published in the Federal Register and appears at 48 Fed. Reg. 34263 (1983). Ed. Note] GUIDANCE REGARDING NEPA REGULATIONS 40 CFR Part 1500 Executive Office of the President Council on Environmental Quality 722 Jackson Place, N.W. Washington, D.C. 20006 July 22, 1983 Memorandum For: Heads of Federal Agencies From: A. Alan Hill, Chairman Re: Guidance Regarding NEPA Regulations The Council on Environmental Quality (CEQ) regulations implementing the National Environmental Policy Act (NEPA) were issued on November 29, 1978. These regulations became effective for, and binding upon, most federal agencies on July 30, 1979, and for all remaining federal agencies on November 30, 1979. As part of the Council's NEPA oversight responsibilities it solicited through an August 14,

413

Virginia State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Virginia Virginia State Regulations: Virginia State of Virginia The Division of Gas and Oil in the Virginia Department of Mines, Minerals and Energy (DMME) regulates the effects of gas and oil operations both on and below the surface. The Virginia Gas and Oil Board is to foster, encourage, and promote the safe and efficient exploration for and development, production, and utilization of gas and oil resources. Otherwise, three regulatory citizen boards are responsible for adopting Virginia 's environmental regulations. The Virginia Department of Environmental Quality (DEQ) staff administers the regulations as approved by the boards. Finally, the U.S. Environmental Protection Agency (EPA) Region 3, through its Water Protection Division, administers Class II underground injection control (UIC) programs in Virginia in direct implementation.

414

Sulfur Dioxide Regulations (Ohio)  

Energy.gov (U.S. Department of Energy (DOE))

This chapter of the law establishes that the Ohio Environmental Protection Agency provides sulfur dioxide emission limits for every county, as well as regulations for the emission, monitoring and...

415

Montana State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Montana State Regulations: Montana State of Montana The Montana Board of Oil and Gas Conservation (MBOGC) is a quasi-judicial body that is attached to the Department of Natural...

416

Polonium release from an ATW burner system with liquid lead-bismuth coolant  

SciTech Connect

The authors analyzed polonium release hazards in a conceptual pool-type ATW burner with liquid lead-bismuth eutectic (LBE) coolant. Simplified quantitative models are used based on experiments and real NPP experience. They found little Po contamination outside the burner under normal operating conditions with nominal leakage from the gas system. In sudden gas leak and/or coolant spill accidents, the P contamination level can reach above the regulation limit but short exposure would not lead to severe health consequences. They are evaluating and developing mitigation methods.

Li, N. [Los Alamos National Lab., NM (United States); Yefimov, E.; Pankratov, D. [Inst. of Physics and Power Engineering, Obninsk (Russian Federation)

1998-04-01T23:59:59.000Z

417

Designing superior incentive regulation  

SciTech Connect

The key to success in designing effective incentive regulation is relatively simple: Anticipate all of the incentives that will ultimately come to bear, and structure regulatory policy in advance to limit any adverse incentives. All is a critical word here. Attention commonly is focused on the incentives a proposed regulatory plan creates for the regulated firm to minimize production costs, diversify into new markets, and so on. While the incentives are important in assessing a regulatory plan, they are only one consideration. It is also critical to analyze the incentives the plan creates for other key players in the regulatory arena, particularly regulators. It is premature to draw any broad conclusions about the success of incentive regulation in the electric power and natural gas industries. While there is reason for optimism, concern remain. Some incentive regulation plans have been abandoned, in part because of: (1) unforeseen exogenous event that could not be administered within the confines of the plan; (2) public opposition to rewarding a utility for the superior performance it should have realized without the promise of financial reward; (3) adverse reaction to utility earnings in excess of those commonly authorized under traditional regulation, and (4) questions about the legality of the plans under state statutes.

Sappington, D.E.M.; Weisman, D.L.

1994-02-15T23:59:59.000Z

418

Standard Guide for Dry Lead Glass and Oil-Filled Lead Glass Radiation Shielding Window Components for Remotely Operated Facilities  

E-Print Network (OSTI)

Standard Guide for Dry Lead Glass and Oil-Filled Lead Glass Radiation Shielding Window Components for Remotely Operated Facilities

American Society for Testing and Materials. Philadelphia

2010-01-01T23:59:59.000Z

419

Helping in collaborative activity regulation: modeling regulation scenarii  

Science Conference Proceedings (OSTI)

The regulation was introduced into groupware in order to improve the actors collaboration. In our context, the regulation means the ability given to a group or a person that manages a group. This paper describes an approach of setting up about this regulation ... Keywords: XML, groupware, regulation, scenario

Stphane Talbot; Philippe Pernelle

2003-11-01T23:59:59.000Z

420

Report on the evaluation of the tritium producing burnable absorber rod lead test assembly. Revision 1  

Science Conference Proceedings (OSTI)

This report describes the design and fabrication requirements for a tritium-producing burnable absorber rod lead test assembly and evaluates the safety issues associated with tritium-producing burnable absorber rod irradiation on the operation of a commercial light water reactor. The report provides an evaluation of the tritium-producing burnable absorber rod design and concludes that irradiation can be performed within U.S. Nuclear Regulatory Commission regulations applicable to a commercial pressurized light water reactor.

NONE

1997-03-01T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

Advanced Research: Innovation Leading to Successes  

NLE Websites -- All DOE Office Websites (Extended Search)

Research: Innovation Leading to Research: Innovation Leading to Successes Exploring the "Grand Challenges" of Fossil Fuels December 2010 3 Exploring the "Grand Challenges" of Fossil Fuels NETL Advanced Research The Advanced Research (AR) Program within the Office of Coal and Power Systems of the National Energy Technology Laboratory (NETL), the research arm of the U.S. Department of Energy's Office of Fossil Energy (DOE/FE), fosters the development of innovative, cost-effective technologies for improving the efficiency, reliability, and environmental performance of advanced coal and power systems. In addition, AR bridges the gap between fundamental research into technology alternatives and applied research aimed at scale-up, deployment, and commercialization of the most promising technologies identified.

422

Nick Wright Named Advanced Technologies Group Lead  

NLE Websites -- All DOE Office Websites (Extended Search)

Nick Wright Named Nick Wright Named Advanced Technologies Group Lead Nick Wright Named Advanced Technologies Group Lead February 4, 2013 Nick Nick Wright has been named head of the National Energy Research Scientific Computing Center's (NERSC) Advanced Technologies Group (ATG), which focuses on understanding the requirements of current and emerging applications to make choices in hardware design and programming models that best serve the science needs of NERSC users. ATG specializes in benchmarking, system performance, debugging and analysis, workload monitoring, use of application modeling tools, and future algorithm scaling and technology assessment. The team also engages with vendors and the general research community to advocate technological features that will enhance the effectiveness of systems for NERSC scientists.

423

Lead magnesium niobate actuator for micropositioning  

DOE Patents (OSTI)

An improved lead magnesium niobate actuator is disclosed comprising a cylindrical lead magnesium niobate crystal stack mounted in a cylindrical casing wherein a bias means, such as one or more belleville washers, is located between one end of the crystal stack and a partially closed end of the casing; and adjustment means are provided which bear against the opposite end of the crystal stack, whereby an adjustable compressive force is constantly applied against the crystal stack, whether the crystal stack is actuated in an extended position, or is in an unactuated contracted position. In a preferred embodiment, cooling ports are provided for the circulation of coolant in the actuator to cool the crystal stack, and provision is made for removal and replacement of the crystal stack without disconnecting the actuator from the external device being actuated. 3 figs.

Swift, C.D.; Bergum, J.W.

1994-10-25T23:59:59.000Z

424

Lead Fuel Assembly Programs Analysis: Utility Perspectives  

Science Conference Proceedings (OSTI)

Licensees, in association with nuclear fuel vendors, conduct lead fuel assembly (LFA) programs to test new design features prior to batch implementation. A limited number of LFAs are irradiated to obtain data and to confirm successful operation in the host reactor environment. The new LFA design features range from minor changes of dimensions and/or materials to an entirely new design from an alternate fuel vendor. LFA program elements can consist of design activities, methods development, analysis, ...

2013-10-17T23:59:59.000Z

425

L I NATIONAL' LEAD COMPANY OF OHIO  

Office of Legacy Management (LM)

L L I NATIONAL' LEAD COMPANY OF OHIO tJw HEALTH AND SAFETY DI"ISION - ANALITICIL DEPT. ANALYTICAL DATA SHEET _I . . NATIONAL LEAD COMPANY O F OHIO HEALTH AND SAFETY DIY1SION - ANALYTICAL DEPT. ANALYTICAL DATA SHEET NATIONA-i LEn' D COMPANY OF OHIO HEALTH AND SAFETY Dl"lSlDN - m4ALITICAL DEPT. ANALYTICAL DATA SHEET NO. I DlSTRlBUTlON OF COPIES I I A,w,lytlc.al Loboratorr (RBCORD COPI) 2 Induswlol Hvalen. B Rodhtlon Dept. 3 1 Water Trsotmmt Plant c=.z w&w hnp,., Only, - . _. NATIONAL LEAD COMPANY OF OHIO HEALiH ANO SAFETY OIVISIOH - w4ALYTICAL DEPT. ANALYTICAL DATA SHEET INDUSTRIAL, HYGlENE AND RADIATION DEPT. 1 ANALYTICAL CHEMISTRY SECTION i. H. NO. IHPLEN0S.i . 7 RO"Te TO, D.TB RECEIVED, B", 464 9 - sD6:LzTEo, lB"' S/24/61 I DP

426

The analysis and specification of large high-pressure, high-temperature valves for combustion turbine protection in second-generation PFB power plants: Topical report  

SciTech Connect

The purpose of this study was to provide a specification for the high-pressure/high-temperature valves for turbine overspeed protection in a commercial-scale second-generation pressurized fluidized bed combustion (PFBC) power plant. In the event of a loss of external (generator) load, the gas turbine rapidly accelerates from its normal operating speed. Protection from excessive overspeed can be maintained by actuation of fuel isolation and air bypass valves. A design specification for these valves was developed by analyses of the turbine/compressor interaction during a loss of load and analyses of pressure and flow transients during operation of the overspeed protection valves. The basis for these analyses was the Phase 1 plant conceptual design prepared in 1987.

1994-08-01T23:59:59.000Z

427

Wyoming State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Wyoming Wyoming State Regulations: Wyoming State of Wyoming The Wyoming Oil and Gas Conservation Commission (WOGCC) is the state agency authorized to regulate oil and gas exploration and production waste. The Wyoming Department of Environmental Quality (DEQ) administers general environmental protection regulations. Contact Wyoming Oil and Gas Conservation Commission 2211 King Blvd. Casper, WY 82602 (street address) P.O. Box 2640 Casper, WY 82602 (mailing address) (307) 234-7147 (phone) (307) 234-5306 (fax) Wyoming Department of Environmental Quality 122 West 25th Street, Herscheler Building Cheyenne, WY 82002 (307) 777-7937 (phone) (307) 777-7682 (fax) Disposal Practices and Applicable Regulations Document # 4855, Agency (Oil and Gas Conservation Commission), General Agency, Board or Commission Rules, Chapter 4 (Environmental Rules, Including Underground Injection Control Program Rules for Enhanced Recovery and Disposal Projects), Section 1. Pollution and Surface Damage (Forms 14A and 14B) of the Wyoming Rules and Regulations contains the environmental rules administered by the WOGCC with respect to management options for exploration and production waste.

428

Initial steam flow regulator for steam turbine start-up  

SciTech Connect

In a combined steam generator-turbine system, a drain type is provided in front of the stop valve to drain the first steam supply with the stop valve closed until the temperature of the valve and/or the temperature of the steam exceeds the temperature of saturation by a predetermined amount, and logic circuitry is provided to generate permissive signals which combine to allow successive admission of steam to the gland seal and to the steam turbine.

Martens, A.; Hobbs, M. M.

1985-12-31T23:59:59.000Z

429

Regulation of mTOR complex 1 in response to growth factors and nutrients  

E-Print Network (OSTI)

In multicellular organisms, cells ensure the simultaneous availability of growth factors and nutrients before they invest in cellular processes that lead to growth. The TOR kinase is a master regulator of cellular growth ...

Sancak, Yasemin S. (Yasemin Shechner)

2010-01-01T23:59:59.000Z

430

Control methods and valve arrangement for start-up and shutdown of pressurized combustion and gasification systems integrated with a gas turbine  

DOE Patents (OSTI)

A power plant having a system for converting coal to power in a gas turbine comprises a coal fed pressurized circulating bed for converting coal to pressurized gases, a gas turbine having a compressor for pressurizing air for the pressurized circulating bed and expander for receiving and expanding hot combustion gases for powering a generator, a first fast acting valve for controlling the pressurized air, a second fast acting valve means for controlling pressurized gas from the compressor to the expander.

Provol, Steve J. (Carlsbad, CA); Russell, David B. (San Diego, CA); Isaksson, Matti J. (Karhula, FI)

1994-01-01T23:59:59.000Z

431

Compilation and Evaluation of NOREM (TM) Test Results: Implications for Valve Applications: Generic Background Information for 10 CF R 50.59 Evaluations  

Science Conference Proceedings (OSTI)

EPRI's iron-base NOREM(TM) hardfacing alloy represents a viable generic substitute for cobalt-base Stellite(TM) hardfacing alloys in nuclear valve applications. Based on a wide array of evaluations, this report identifies an acceptable range of conditions for using NOREM in nuclear plant valves to replace cobalt-base hardfacing alloys. The report should prove valuable to utility personnel responsible for performing 10 CFR 50.59 evaluations of NOREM replacements.

1999-06-30T23:59:59.000Z

432

Michigan State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Michigan Michigan State Regulations: Michigan State of Michigan The Michigan Department of Environmental Quality (DEQ), through the Supervisor of Wells, Geological and Land Management Division (GLM), oversees the regulation of oil and gas activities. DEQ staff monitors the environmental impacts of well drilling operations, oil and gas production facilities, and gas storage wells. Contact Michigan Department of Environmental Quality Geological and Land Management Division P.O. Box 30256 Lansing, MI 48909-7756 (517) 241-1515 (phone) (517) 241-1601 (fax) (Organization Chart) Disposal Practices and Applicable Regulations The rules governing oil and gas operations are contained in Part 615, Rules 324.101-324.1301 (Department of Environmental Quality, Oil and Gas Operations) of the Michigan Administrative Code.

433

Technical Standards, DOE-SPEC-3019-96 - September 17, 1996 |...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

SPEC-3019-96 - September 17, 1996 Technical Standards, DOE-SPEC-3019-96 - September 17, 1996 September 17, 1996 DOE-SPEC-3019-96: DOE Specification, Valve-Regulated Type Lead-Acid...

434

Sandia National Laboratories Distributive Power Initiative (DPI...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

2 Objective (FY-08 Work) Objective (FY-08 Work) Identify and test advanced battery technology including Valve Regulated Lead-Acid, (VRLA) and Li-ion (Li- FePO 4 ) for...

435

A Main Steam Safety Valve (MSSV) With Fixed Blowdown According to ASME Section III,Part NC-7512  

Science Conference Proceedings (OSTI)

In 1986, the NRC issued the Information Notice (IN) 86-05 'Main Steam Safety Valve test failures and ring setting adjustments'. Shortly after this IN was issued, the Code was revised to require that a full flow test has to be performed on each CL.2 MSSV by the manufacturer to verify that the valve was adjusted so that it would reach full lift and thus full relieving capacity and would re-close at a pressure as specified in the valve Design Specification. In response to the concern discussed in the IN, the Westinghouse Owners Group (WOG) performed extensive full flow testing on PWR MSSVs and found that each valve required a unique setting of a combination of two rings in order to achieve full lift at accumulation of 3% and re-closing at a blowdown of 5%. The Bopp and Reuther MSSV type SiZ 2507 has a 'fixed blowdown' i.e. without any adjusting rings to adjust the 'blowdown' so that the blowdown is 'fixed'. More than 1000 pieces of this type are successfully in nuclear power plants in operation. Many of them since about 25 years. Therefore it can be considered as a proven design. It is new that an optimization of this MSSV type SiZ 2507 fulfill the requirements of part NC-7512 of the ASME Section III although there are still no adjusting rings in the flow part. In 2000, for the Qinshan Candu unit 1 and 2 full flow tests were performed with 32 MSSV type SiZ 2507 size 8'' x 12'' at 51 bar saturated steam in only 6 days. In all tests the functional performance was very stable. It was demonstrated by recording the signals lift and system pressure that all valves had acceptable results to achieve full lift at accumulation of 3% and to re-close at blowdown of 5%. This is an advantage which gives a reduction in cost for flow tests and which gives more reliability after maintenance work during outage compared to the common MSSV design with an individual required setting of the combination of the two rings. The design of the type SiZ 2507 without any adjusting rings in the flow path is presented. The stable performance depends on the interaction of flow force and spring force. The optimization of the flow path to create a suitable flow-force-curve was managed by Computational Fluid Dynamics (CFD) and flow-force-characteristic-measurements at a model 1: 2.5. The method of the flow-force-characteristic-measurement permits systematic dimensioning of valve spring forces by means of measurement of the fluid mechanical forces occurring on the valve spindle during flow. A special procedure was established to verify a spring force versus lift curve with an accuracy of 1% for each production valve. This gives high reliability at required stable performance and this can not be influenced by wrong setting of any adjusting ring during maintenance work. (authors)

Follmer, Bernhard; Schnettler, Armin [Bopp and Reuther Sicherheitsund Regelarmaturen, GmbH, Mannheim (Germany)

2002-07-01T23:59:59.000Z

436

ESTIMATED SIL LEVELS AND RISK COMPARISONS FOR RELIEF VALVES AS A FUNCTION OF TIME-IN-SERVICE  

SciTech Connect

Risk-based inspection methods enable estimation of the probability of spring-operated relief valves failing on demand at the United States Department of Energy's Savannah River Site (SRS) in Aiken, South Carolina. The paper illustrates an approach based on application of the Frechet and Weibull distributions to SRS and Center for Chemical Process Safety (CCPS) Process Equipment Reliability Database (PERD) proof test results. The methodology enables the estimation of ANSI/ISA-84.00.01 Safety Integrity Levels (SILs) as well as the potential change in SIL level due to modification of the maintenance schedule. Current SRS practices are reviewed and recommendations are made for extending inspection intervals. The paper compares risk-based inspection with specific SILs as maintenance intervals are adjusted. Groups of valves are identified in which maintenance times can be extended as well as different groups in which an increased safety margin may be needed.

Harris, S.

2012-03-26T23:59:59.000Z

437

Aging and service wear of air-operated valves used in safety-related systems at nuclear power plants  

SciTech Connect

Air-operated valves (AOVs) are used in a variety of safety-related applications at nuclear power plants. They are often used where rapid stroke times are required or precise control of the valve obturator is required. They can be designed to operate automatically upon loss of power, which is often desirable when selecting components for response to design basis conditions. The purpose of this report is to examine the reported failures of AOVs and determine whether there are identifiable trends in the failures related to predictable causes. This report examines the specific components that comprise a typical AOV, how those components fail, when they fail, and how such failures are discovered. It also examines whether current testing frequencies and methods are effective in predicting such failures.

Cox, D.F.; McElhaney, K.L.; Staunton, R.H.

1995-05-01T23:59:59.000Z

438

Nuclear regulation and safety  

SciTech Connect

Nuclear regulation and safety are discussed from the standpoint of a hypothetical country that is in the process of introducing a nuclear power industry and setting up a regulatory system. The national policy is assumed to be in favor of nuclear power. The regulators will have responsibility for economic, reliable electric production as well as for safety. Reactor safety is divided into three parts: shut it down, keep it covered, take out the afterheat. Emergency plans also have to be provided. Ways of keeping the core covered with water are discussed. (DLC)

Hendrie, J.M.

1982-01-01T23:59:59.000Z

439

System to inject steam and produce oil from the same wellbore through downhole valve switching. Final report  

SciTech Connect

Through direct contacts with many California Operators, the potential market for this technology and hardware was more closely defined. The largest market might be for re-entry into existing but shut-in wells, equipped with 7{double_prime}OD cemented casings, for which a suitable configuration was designed. For field-testing any prototype Downhole equipment, however, Operators and Service Companies prefer to start with a new well, for better control of the well characteristics. In the relatively shallow reservoirs where Steam injection is currently used with success, the additional drilling cost, in soft formations, is sufficiently small that this became the main design case. Substantial savings were obtained by reducing the number of Downhole valves from two to one and by replacing the twin hydraulically-controlled ball or flapper-type valves with a single sliding sleeve valve, operated by wireline. Laboratory tests conducted at UC-Berkeley confirmed the satisfactory operation of this type of valve with wet steam over extended periods. Low reservoir pressures dictated the use of artificial lift methods, with rod pumps considered the most economical. The availability of live steam downhole at all times is, however, a major advantage which led to the selection of a combined method of artificial lift: (1) steam-lift of the produced fluids up to the kick-off point of the medium curvature drainholes, (2) dumping of the produced fluids into a vertical separator/sump below the kick-off points, (3) vertical rod pumping of the liquid phases from the downhole separator/sump to the surface through a dedicated production tubing.

Not Available

1994-10-01T23:59:59.000Z

440

Leading neutrons from polarized pp collisions  

SciTech Connect

We calculate the cross section and single-spin azimuthal asymmetry, A{sub n}(t) for inclusive neutron production in pp collisions at forward rapidities relative to the polarized proton. Absorptive corrections to the pion pole generate a relative phase between the spin-flip and non-flip amplitudes, which leads to an appreciable spin asymmetry. However, the asymmetry observed recently in the PHENIX experiment at RHIC at very small |t|{approx}0.01 GeV{sup 2} cannot be explained by this mechanism.

Kopeliovich, B. Z. [Departamento de Fisica y Centro de Estudios Subatomicos, Universidad Tecnica Federico Santa Maria, Casilla 110-V, Valparaiso (Chile); Institut fuer Theoretische Physik der Universitaet, Philosophenweg 19, 69120 Heidelberg (Germany); Potashnikova, I. K.; Schmidt, Ivan [Departamento de Fisica y Centro de Estudios Subatomicos, Universidad Tecnica Federico Santa Maria, Casilla 110-V, Valparaiso (Chile); Soffer, J. [Department of Physics, Temple University, Philadelphia, PA 19122-6082 (United States)

2008-10-13T23:59:59.000Z

Note: This page contains sample records for the topic "valve regulated lead" 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

Lead Slowing Down Spectrometer Status Report  

Science Conference Proceedings (OSTI)

This report documents the progress that has been completed in the first half of FY2012 in the MPACT-funded Lead Slowing Down Spectrometer project. Significant progress has been made on the algorithm development. We have an improve understanding of the experimental responses in LSDS for fuel-related material. The calibration of the ultra-depleted uranium foils was completed, but the results are inconsistent from measurement to measurement. Future work includes developing a conceptual model of an LSDS system to assay plutonium in used fuel, improving agreement between simulations and measurement, design of a thorium fission chamber, and evaluation of additional detector techniques.

Warren, Glen A.; Anderson, Kevin K.; Bonebrake, Eric; Casella, Andrew M.; Danon, Yaron; Devlin, M.; Gavron, Victor A.; Haight, R. C.; Imel, G. R.; Kulisek, Jonathan A.; O'Donnell, J. M.; Weltz, Adam

2012-06-07T23:59:59.000Z

442

Dezincification and Brass Lead Leaching in Premise Plumbing Systems: Effects of Alloy, Physical Conditions and Water Chemistry.  

E-Print Network (OSTI)

??Brass components are widely used in drinking water distribution systems as valves, faucets and other fixtures. They can be corroded by dezincification, which is the (more)

Zhang, Yaofu

2010-01-01T23:59:59.000Z

443

Do Producer Prices Lead Consumer Prices?  

E-Print Network (OSTI)

increased rapidly. Excluding food and energy, prices of crude materials and intermediate goods rose at annual rates of 7.2 and 16.7 percent, respectively. At the same time, however, prices of consumer goods and services excluding food and energy increased a more modest 2.9 percent. Many analysts are concerned that recent increases in the prices of crude and intermediate goods may be passed through to consumers, resulting in a higher rate of inflation in consumer prices later this year and perhaps in 1996. This article examines whether price increases at the early stages of production should be expected to move through the production chain, leading to increases in consumer prices. In the first section, a review of basic economic theory suggests there should be a pass-through effectthat is, producer prices should lead and thereby help predict consumer prices. A more sophisticated analysis, though, suggests the pass-through effect may be weak. In the second section, an examination of the empirical evidence indicates that producer prices are not always good predictors of consumer prices. The article Todd E. Clark is an economist at the Federal Reserve Bank of Kansas City. Mangal Goswami, a research associate at the bank, helped prepare the article. concludes that the recent increases in some producer prices do not necessarily signal higher inflation.

E. Clark

1994-01-01T23:59:59.000Z

444

Precipitation in a lead calcium tin anode  

SciTech Connect

Samples from a hot rolled sheet of a tin and calcium bearing lead alloy were solution heat treated at 300 Degree-Sign C and cooled down to room temperature at different rates; these samples were left at room temperature to study natural precipitation of CaSn{sub 3} particles. The samples were aged for 45 days before analysing their microstructure, which was carried out in a scanning electron microscope using secondary and backscattered electron detectors. Selected X-ray spectra analyses were conducted to verify the nature of the precipitates. Images were taken at different magnifications in both modes of observation to locate the precipitates and record their position within the images and calculate the distance between them. Differential scanning calorimeter analyses were conducted on selected samples. It was found that the mechanical properties of the material correlate with the minimum average distance between precipitates, which is related to the average cooling rate from solution heat treatment. - Highlights: Black-Right-Pointing-Pointer The distance between precipitates in a lead alloy is recorded. Black-Right-Pointing-Pointer The relationship between the distance and the cooling rate is established. Black-Right-Pointing-Pointer It is found that the strengthening of the alloy depends on the distance between precipitates.

Perez-Gonzalez, Francisco A., E-mail: fco.aurelio@inbox.com [Facultad de Ingenieria Mecanica y Electrica, Universidad Autonoma de Nuevo Leon (Mexico); Centro de Innovacion, Investigacion y Desarrollo en Ingenieria y Tecnologia, Universidad Autonoma de Nuevo Leon (Mexico); Camurri, Carlos G., E-mail: ccamurri@udec.cl [Departamento de Ingenieria de Materiales, Universidad de Concepcion (Chile); Carrasco, Claudia A., E-mail: ccarrascoc@udec.cl [Departamento de Ingenieria de Materiales, Universidad de Concepcion (Chile); Colas, Rafael, E-mail: rafael.colas@uanl.edu.mx [Facultad de Ingenieria Mecanica y Electrica, Universidad Autonoma de Nuevo Leon (Mexico); Centro de Innovacion, Investigacion y Desarrollo en Ingenieria y Tecnologia, Universidad Autonoma de Nuevo Leon (Mexico)

2012-02-15T23:59:59.000Z

445

Emotion Regulation CONCEPTUAL FOUNDATIONS  

E-Print Network (OSTI)

in emotion and emotion regulation. 3 This is a chapter excerpt from Guilford Publications. Handbook a fundamental role in the develop- ment of emotion, particularly in infancy and early childhood. Third the interaction of external and intrinsic influences. FUNDAMENTAL QUESTIONS AND DIRECTIONS FOR FUTURE INQUIRY

Gross, James J.

446

Expanding Robust HCCI Operation with Advanced Valve and Fuel Control Technologies Pub ID 38707 Title Expanding Robust HCCI Operation with Advanced Valve and Fuel Control Technologies Status Distributed Communication Type ORNL report ORNL Review? Scientific communication that requires ORNL review Information Category Protected CRADA Information ORNL Report Classification Final Expanding Robust HCCI Operation with Advanced Valve and Fuel Control Technologies  

SciTech Connect

Delphi Automotive Systems and ORNL established this CRADA to advance the commercialization potential of the homogeneous charge compression ignition (HCCI) advanced combustion strategy for gasoline engine platforms. HCCI combustion has been shown by others to produce high diesel-like efficiency on a gasoline engine platform while simultaneously producing low NOX and particulate matter emissions. However, the commercialization barriers that face HCCI combustion are significant, with requirements for a more active engine control system, likely with next-cycle closed-loop feedback control, and with advanced valve train technologies to enable negative valve overlap conditions. In the partnership between Delphi and ORNL, each organization brought a unique and complementary set of skills to the project. Delphi has made a number of breakthroughs with production-intent valve train technologies and controls in recent years to make a part time production-intent HCCI engine plausible. ORNL has extensive knowledge and expertise with HCCI combustion, and also has a versatile research engine with hydraulic valve actuation (HVA) that is useful for guiding production of a cam-based HCCI system. Partnering these knowledge bases and capabilities was essential towards making progress to better understand HCCI combustion and the commercialization barriers that it faces. ORNL and Delphi maintained strong collaboration throughout the project. Meetings were held regularly, with additional reports, presentations, and meetings as necessary to maintain progress. Delphi provided guidance to ORNL regarding operational strategies to investigate on their single-cylinder research engine with HVA and data from their experimental multi-cylinder engine for modeling. ORNL provided single-cylinder engine data and modeling results.

Szybist, J.P.; Confer, K. (Delphi Automotive Systems)

2012-09-11T23:59:59.000Z

447

Biquadratic coupling effect on magnetoresistance response curves of spin valves with a synthetic antiferromagnet  

SciTech Connect

Both normal and inverse magnetoresistance (MR) response curves were observed for synthetic spin valves with the structure of Si(100)/Ru/Co(t{sub 1})/Ru(0.7nm)/Co(t{sub 2})/Cu(3nm)/Co(t{sub 3})/Ru. Under the assumption of a coherent rotation of the magnetization in the three Co layers, the hysteresis loops, magnetization response, and MR response curves were calculated as a function of the parameters of the system. The parameters include antiferromagnetic coupling of Co(t{sub 1}) and Co(t{sub 2}) through Ru layer, a weak ferromagnetic coupling of Co(t{sub 2}) and Co(t{sub 3}) through Cu spacer, giant magnetoresistance of the Co/Cu/Co and Co/Ru/Co systems, and AMR contribution of each Co layer. The uniaxial anisotropy of each Co layer and a distribution of the coupling strength of Co(t{sub 1})/Ru/Co(t{sub 2}) were also included. To fit the experimental data well, it was necessary to include a biquadratic coupling in the Co(t{sub 1})/Ru/Co(t{sub 2}) trilayer. {copyright} 2001 American Institute of Physics.

Zhang, K.; Kai, T.; Zhao, T.; Fujiwara, H.; Mankey, G. J.

2001-06-01T23:59:59.000Z

448

Lead-Free Solder - Home - Energy Innovation Portal  

Energy Innovation Portal ... Technology Marketing Summary A lead-free solder for use in electronic soldering including ... Benefits * An industry standard for lead ...

449

DOE Research Grant Leads to Gas Turbine Manufacturing Improvements...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

DOE Research Grant Leads to Gas Turbine Manufacturing Improvements DOE Research Grant Leads to Gas Turbine Manufacturing Improvements August 16, 2011 - 1:00pm Addthis Washington,...

450

Robert C. Seamans, Jr. Appointed to Lead Nuclear Weapons Program...  

National Nuclear Security Administration (NNSA)

... Robert C. Seamans, Jr. Appointed to Lead Nuclear Weapons Program January 19, 1975 Washington, DC Robert C. Seamans, Jr. Appointed to Lead Nuclear Weapons Program The Energy...

451

Bush Administration Plays Leading Role in Studying and Addressing...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Plays Leading Role in Studying and Addressing Global Climate Change Bush Administration Plays Leading Role in Studying and Addressing Global Climate Change February 27, 2007 -...

452

Lead Test Assembly Irradiation and Analysis Watts Bar Nuclear...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Lead Test Assembly Irradiation and Analysis Watts Bar Nuclear Plant, Tennessee and Hanford Site, Richland, Washington Lead Test Assembly Irradiation and Analysis Watts Bar Nuclear...

453

Closure device for lead-acid batteries  

DOE Patents (OSTI)

A closure device for lead-acid batteries includes a filter of granulated activated carbon treated to be hydrophobic combined with means for preventing explosion of emitted hydrogen and oxygen gas. The explosion prevention means includes a vertical open-end tube within the closure housing for maintaining a liquid level above side wall openings in an adjacent closed end tube. Gases vent from the battery through a nozzle directed inside the closed end tube against an impingement surface to remove acid droplets. The gases then flow through the side wall openings and the liquid level to quench any possible ignition prior to entering the activated carbon filter. A wick in the activated carbon filter conducts condensed liquid back to the closure housing to replenish the liquid level limited by the open-end tube.

Ledjeff, Konstantin (Schwalbach, DE)

1983-01-01T23:59:59.000Z

454

Separator plate for lead-acid battery  

SciTech Connect

A separator plate for the negative electrode of a lead-acid battery comprising a molded, synthetic plastic wall or planar member of generally rectangular configuration. A pair of like separator plates are vertically oriented in the battery casing to sandwich the negative electrode therebetween including juxtaposed retention mats common in such a negative electrode assembly. The sandwich provides a clear-through channel along opposite extremities of the electrode for flow of electrolyte. The sandwich assembly is maintained by means of cooperating locking and sealing formations integral with the separator plates of the assembly. Wrapping of the positive electrode thereby is rendered unnecessary when assembling the battery and enables automated assembly of the battery using the separator plate sandwich.

Wozniak, E.

1985-11-12T23:59:59.000Z

455

Lead Slowing Down Spectrometer Research Plans  

Science Conference Proceedings (OSTI)

The MPACT-funded Lead Slowing Down Spectrometry (LSDS) project has been evaluating the feasibility of using LSDS techniques to assay fissile isotopes in used nuclear fuel assemblies. The approach has the potential to provide considerable improvement in the assay of fissile isotopic masses in fuel assemblies compared to other non-destructive techniques in a direct and independent manner. The LSDS collaborations suggests that the next step to in empirically testing the feasibility is to conduct measurements on fresh fuel assemblies to understand investigate self-attenuation and fresh mixed-oxide (MOX) fuel rodlets so we may betterto understand extraction of masses for 235U and 239Pu. While progressing toward these goals, the collaboration also strongly suggests the continued development of enabling technology such as detector development and algorithm development, thatwhich could provide significant performance benefits.

Warren, Glen A.; Kulisek, Jonathan A.; Gavron, Victor; Danon, Yaron; Weltz, Adam; Harris, Jason; Stewart, T.

2013-03-22T23:59:59.000Z

456

ELECTRON EMISSION REGULATING MEANS  

DOE Patents (OSTI)

>An electronic regulating system is described for controlling the electron emission of a cathode, for example, the cathode in a mass spectrometer. The system incorporates a transformer having a first secondary winding for the above-mentioned cathode and a second secondary winding for the above-mentioned cathode and a second secondary winding load by grid controlled vacuum tubes. A portion of the electron current emitted by the cathode is passed through a network which develops a feedback signal. The system arrangement is completed by using the feedback signal to control the vacuum tubes in the second secondary winding through a regulator tube. When a change in cathode emission occurs, the feedback signal acts to correct this change by adjusting the load on the transformer.

Brenholdt, I.R.

1957-11-19T23:59:59.000Z

457

California State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

California California State Regulations: California State of California The California Department of Conservation's Division of Oil, Gas, and Geothermal Resources oversees the drilling, operation, maintenance, and plugging and abandonment of oil, natural gas, and geothermal wells. The regulatory program emphasizes the development of oil, natural gas, and geothermal resources in the state through sound engineering practices that protect the environment, prevent pollution, and ensure public safety. Other agencies that may be involved in the regulation of drilling wastes include the State Water Resources Control Board and appropriate Regional Water Quality Control Boards, the California Integrated Waste Management Board, the California Air Resources Board and appropriate Air Quality Management Districts or Air Pollution Control Districts, and the Department of Toxic Substances Control.

458

North Dakota State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

North Dakota North Dakota State Regulations: North Dakota State of North Dakota The North Dakota Industrial Commission (NDIC), through its Oil and Gas Division (OGD), is the regulatory agency for oil and gas exploration and production activities in North Dakota. The North Dakota Department of Health (NDDH) Environmental Health Section (EHS) has the responsibility to safeguard the quality of North Dakota's air, land, and water resources. Contact North Dakota Industrial Commission Oil and Gas Division 600 East Boulevard Avenue, Dept. 405 Bismarck, ND 58505-0840 (701) 328-8020 (phone) (701) 328-8022 (fax) North Dakota Department of Health Environmental Health Section 1200 Missouri Avenue P.O. Box 5520 Bismarck, ND 58506-5520 (701) 328-5150 (phone) (701) 328-5200 (fax) Disposal Practices and Applicable Regulations

459

Nevada State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Nevada Nevada State Regulations: Nevada State of Nevada The Nevada Division of Minerals (Nevada Commission of Mineral Resources) administers programs and activities to further the responsible development and production of Nevada's mineral resources, including the regulation of oil- and gas-well drilling operations. Otherwise, the Nevada Division of Environmental Protection (Nevada Department of Conservation and Mineral Resources) administers the major environmental protection laws. Contact Nevada Division of Minerals (Carson City Office) 400 West King Street, Suite 106 Carson City, NV 89703 (775) 684-7040 (phone) (775) 684-7052 (fax) (Las Vegas Office) 2030 East Flamingo Road, Suite 220 Las Vegas, NV 89119 (702) 486-4343 (phone) (702) 486-4345 (fax) Nevada Division of Environmental Protection

460

Colorado State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Colorado Colorado State Regulations: Colorado State of Colorado The Colorado Oil and Gas Conservation Commission (COGCC), a division of the Department of Natural Resources (DNR), regulates oil and gas activities in Colorado. The COGCC has broad statutory authority with respect to impacts on any air, water, soil, or biological resources resulting from oil and gas operations. The COGCC implements the state ground water standards and classifications as they relate to oil and gas exploration and production (E&P) activities. The COGCC has jurisdiction for all Class II injection wells except those on Indian lands. The COGCC has jurisdiction for the management of all E&P wastes except at commercial disposal facilities. The Colorado Department of Public Health and Environment (CDPHE) administers the environmental protection laws related to air quality, waste discharge to surface water, and commercial disposal facilities.

Note: This page contains sample records for the topic "valve regulated lead" 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

Kansas State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Kansas Kansas State Regulations: Kansas State of Kansas The Kansas Corporation Commission (KCC) Conservation Division regulates oil and gas operations and protects correlative rights and environmental resources. Otherwise, the Kansas Department of Health and Environment (KDHE) administers the major environmental protection laws. Contact Kansas Corporation Commission (Main Office) 1500 S.W. Arrowhead Road Topeka, KS 66604-2425 (785) 271-3100 (phone) (785) 271-3354 (fax) Conservation Division Finney State Office Building 130 South Market, Room 2078 Wichita, KS 67202-3802 (316) 337-6200 (phone) (316) 337-6211 (fax) Kansas Department of Health and Environment Charles Curtis State Office Building 1000 S.W. Jackson Topeka, KS 66612 (785) 296-1500 (phone) (785) 368-6368 (fax)

462

Oklahoma State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Oklahoma Oklahoma State Regulations: Oklahoma State of Oklahoma The Oklahoma Corporation Commission (OCC), through the Oil and Gas Division, assists the domestic oil and gas industry, protects and preserves the environment, and conserves the natural resources. General environmental protection regulations are administered by the Oklahoma Department of Environmental Quality (DEQ). Contact Oklahoma Corporation Commission Oil and Gas Division P.O. Box 52000 Oklahoma City, OK 73152-2000 (mailing address) (405) 521-2302 (phone) 2101 North Lincoln Blvd. Oklahoma City, OK 73105 (street address) Oklahoma Department of Environmental Quality P.O. Box 1677 Oklahoma City, OK 73101-1677 (mailing address) 707 North Robinson Oklahoma City, OK 73102 (street address) (405) 702-1000 (phone)

463

A regulated magnetron pulser  

Science Conference Proceedings (OSTI)

This paper describes and analysis of a 4.5-kV, 500-mA, regulated current pulser used to drive a Hitachi ZM130 magnetron in a particle-accelerator injector. In this application, precise beam from the injector. A high-voltage triode vacuum tube with active feedback is used to control the magnetron current. Current regulation and accuracy is better than 1%. The pulse width may be varied from as little as 5 {mu}m to cw by varying the width of a gate pulse. The current level can be programmed between 10 and 500 mA. Design of the pulser including circuit simulations, power calculations, and high-voltage issues are discussed.

Rose, C.R.

1997-09-01T23:59:59.000Z

464

REGULATING HAWAII'S PETROLEUM INDUSTRY  

E-Print Network (OSTI)

This study was prepared in response to House Resolution No. 174, H.D. 2, which was adopted during the Regular Session of 1995. The Resolution requested the Legislative Reference Bureau to conduct a study to obtain the views of selected state agencies and representatives of Hawaii's petroleum industry in order to assist the Legislature in formulating policies that protect the interests of Hawaii's gasoline consumers. The Resolution sought information and the views of survey participants on a broad range of proposals to regulate Hawaii's petroleum industry. This study reviews each of these proposals in terms of their value to consumers, and explores both regulatory policy options and alternatives to regulation available to state lawmakers. The Bureau extends its sincere appreciation to all those whose participation and cooperation made this study possible. A list of contact persons, including the names of survey participants and others who helped to contribute to this study, is contained in Appendix B.

Mark J. Rosen; Wendell K. Kimura

1995-01-01T23:59:59.000Z

465

Regulation of Meiotic Recombination  

SciTech Connect

Meiotic recombination results in the heritable rearrangement of DNA, primarily through reciprocal exchange between homologous chromosome or gene conversion. In plants these events are critical for ensuring proper chromosome segregation, facilitating DNA repair and providing a basis for genetic diversity. Understanding this fundamental biological mechanism will directly facilitate trait mapping, conventional plant breeding, and development of genetic engineering techniques that will help support the responsible production and conversion of renewable resources for fuels, chemicals, and the conservation of energy (1-3). Substantial progress has been made in understanding the basal recombination machinery, much of which is conserved in organisms as diverse as yeast, plants and mammals (4, 5). Significantly less is known about the factors that regulate how often and where that basal machinery acts on higher eukaryotic chromosomes. One important mechanism for regulating the frequency and distribution of meiotic recombination is crossover interference - or the ability of one recombination event to influence nearby events. The MUS81 gene is thought to play an important role in regulating the influence of interference on crossing over. The immediate goals of this project are to use reverse genetics to identify mutants in two putative MUS81 homologs in the model plant Arabidopsis thaliana, characterize those mutants and initiate a novel forward genetic screen for additional regulators of meiotic recombination. The long-term goal of the project is to understand how meiotic recombination is regulated in higher eukaryotes with an emphasis on the molecular basis of crossover interference. The ability to monitor recombination in all four meiotic products (tetrad analysis) has been a powerful tool in the arsenal of yeast geneticists. Previously, the qrt mutant of Arabidopsis, which causes the four pollen products of male meiosis to remain attached, was developed as a facile system for assaying recombination using tetrad analysis in a higher eukaryotic system (6). This system enabled the measurement of the frequency and distribution of recombination events at a genome wide level in wild type Arabidopsis (7), construction of genetic linkage maps which include positions for each centromere (8), and modeling of the strength and pattern of interference (9). This proposal extends the use of tetrad analysis in Arabidopsis by using it as the basis for assessing the phenotypes of mutants in genes important for recombination and the regulation of crossover interference and performing a novel genetic screen. In addition to broadening our knowledge of a classic genetic problem - the regulation of recombination by crossover interference - this proposal also provides broader impact by: generating pedagogical tools for use in hands-on classroom experience with genetics, building interdisciplinary collegial partnerships, and creating a platform for participation by junior scientists from underrepresented groups. There are three specific aims: (1) Isolate mutants in Arabidopsis MUS81 homologs using T-DNA and TILLING (2) Characterize recombination levels and interference in mus81 mutants (3) Execute a novel genetic screen, based on tetrad analysis, for genes that regulate meiotic recombination

Gregory p. Copenhaver

2011-11-09T23:59:59.000Z

466

Federal Regulations: BOEM and BSEE  

NLE Websites -- All DOE Office Websites (Extended Search)

development and enforcement of safety and environmental regulations, permitting offshore exploration, development and production, inspections, offshore regulatory programs, oil...

467

Computing Borel's Regulator II.  

E-Print Network (OSTI)

In our earlier article we described a power series formula for the Borel regulator evaluated on the odd-dimensional homology of the general linear group of a number field and, concentrating on dimension three for simplicity, described a computer algorithm which calculates the value to any chosen degree of accuracy. In this sequel we give an algorithm for the construction of the input homology classes and describe the results of one cyclotomic field computation.

Zacky Choo; Wajid Mannan; Rubn J. Snchez-Garca; Victor P. Snaith

468

Improving CS regulations.  

Science Conference Proceedings (OSTI)

President Carter issued Executive Order 12044 (3/28/78) that required all Federal agencies to distinguish between significant and insignificant regulations, and to determine whether a regulation will result in major impacts. This study gathered information on the impact of the order and the guidelines on the Office of Conservation and Solar Energy (CS) regulatory practices, investigated problems encountered by the CS staff when implementing the order and guidelines, and recommended solutions to resolve these problems. Major tasks accomplished and discussed are: (1) legislation, Executive Orders, and DOE Memoranda concerning Federal administrative procedures relevant to the development and analysis of regulations within CS reviewed; (2) relevant DOE Orders and Memoranda analyzed and key DOE and CS staff interviewed in order to accurately describe the current CS regulatory process; (3) DOE staff from the Office of the General Counsel, the Office of Policy and Evaluation, the Office of the Environment, and the Office of the Secretary interviewed to explore issues and problems encountered with current CS regulatory practices; (4) the regulatory processes at five other Federal agencies reviewed in order to see how other agencies have approached the regulatory process, dealt with specific regulatory problems, and responded to the Executive Order; and (5) based on the results of the preceding four tasks, recommendations for potential solutions to the CS regulatory problems developed. (MCW)

Nesse, R.J.; Scheer, R.M.; Marasco, A.L.; Furey, R.

1980-10-01T23:59:59.000Z

469

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator May 2011 Institute for Economic and Environmental Studies (IEES), Califo  

E-Print Network (OSTI)

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator May 2011 © Institute for Economic and Environmental Studies (IEES), California State University Fullerton Adrian R. Fleissig, Ph

de Lijser, Peter

470

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator August 2011 Institute for Economic and Environmental Studies (IEES), Cal  

E-Print Network (OSTI)

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator August 2011 © Institute for Economic and Environmental Studies (IEES), California State University Fullerton Adrian R. Fleissig, Ph

de Lijser, Peter

471

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator November 2012 Institute for Economic and Environmental Studies (IEES), C  

E-Print Network (OSTI)

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator November 2012 © Institute for Economic and Environmental Studies (IEES), California State University Fullerton Adrian R. Fleissig, Ph

de Lijser, Peter

472

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator November 2011 Institute for Economic and Environmental Studies (IEES), C  

E-Print Network (OSTI)

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator November 2011 © Institute for Economic and Environmental Studies (IEES), California State University Fullerton Adrian R. Fleissig, Ph

de Lijser, Peter

473

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator February 2012 Institute for Economic and Environmental Studies (IEES), C  

E-Print Network (OSTI)

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator February 2012 © Institute for Economic and Environmental Studies (IEES), California State University Fullerton Adrian R. Fleissig, Ph

de Lijser, Peter

474

Southern California Leading Economic IndicatorSouthern California Leading Economic IndicatorSouthern California Leading Economic IndicatorSouthern California Leading Economic Indicator May 2010 Institute for Economic and Environmental Studies (IEES), Cal  

E-Print Network (OSTI)

Southern California Leading Economic IndicatorSouthern California Leading Economic IndicatorSouthern California Leading Economic IndicatorSouthern California Leading Economic Indicator May 2010 © Institute for Economic and Environmental Studies (IEES), California State University Fullerton Adrian R. Fleissig, Ph

de Lijser, Peter

475

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator May 2012 Institute for Economic and Environmental Studies (IEES), Califo  

E-Print Network (OSTI)

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator May 2012 © Institute for Economic and Environmental Studies (IEES), California State University Fullerton Adrian R. Fleissig, Ph

de Lijser, Peter

476

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator November 2010 Institute for Economic and Environmental Studies (IEES), C  

E-Print Network (OSTI)

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator November 2010 © Institute for Economic and Environmental Studies (IEES), California State University Fullerton Adrian R. Fleissig, Ph

de Lijser, Peter

477

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator August 2012 Institute for Economic and Environmental Studies (IEES), Cal  

E-Print Network (OSTI)

Southern California Leading EconomicSouthern California Leading EconomicSouthern California Leading EconomicSouthern California Leading Economic IndicatorIndicatorIndicatorIndicator August 2012 © Institute for Economic and Environmental Studies (IEES), California State University Fullerton Adrian R. Fleissig, Ph

de Lijser, Peter

478

Regional Lead Agents and County Coordinators 2011 RESPONSIBILITY NAME COUNTY  

E-Print Network (OSTI)

Coordinator Jay Crouch Newberry County Coordinator Vicky Bertagnolli Aiken REGION 8 Regional Lead Karissa

Bolding, M. Chad

479

Policy and Regulations | Department of Energy  

NLE Websites -- All DOE Office Websites (Extended Search)

Policy and Regulations Policy and Regulations In supporting Department of Energy needs, we provide assistance in internal and external policy. DOE Policies Federal Regulations OMB...

480

Better Buildings Neighborhood Program: Honeymoons Lead to Upgrades in  

NLE Websites -- All DOE Office Websites (Extended Search)

Honeymoons Honeymoons Lead to Upgrades in Western Vermont to someone by E-mail Share Better Buildings Neighborhood Program: Honeymoons Lead to Upgrades in Western Vermont on Facebook Tweet about Better Buildings Neighborhood Program: Honeymoons Lead to Upgrades in Western Vermont on Twitter Bookmark Better Buildings Neighborhood Program: Honeymoons Lead to Upgrades in Western Vermont on Google Bookmark Better Buildings Neighborhood Program: Honeymoons Lead to Upgrades in Western Vermont on Delicious Rank Better Buildings Neighborhood Program: Honeymoons Lead to Upgrades in Western Vermont on Digg Find More places to share Better Buildings Neighborhood Program: Honeymoons Lead to Upgrades in Western Vermont on AddThis.com... Better Buildings Residential Network Progress

Note: This page contains sample records for the topic "valve regulated lead" 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

Alternative Fuels Data Center: San Diego Leads in Promoting EVs  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

San Diego Leads in San Diego Leads in Promoting EVs to someone by E-mail Share Alternative Fuels Data Center: San Diego Leads in Promoting EVs on Facebook Tweet about Alternative Fuels Data Center: San Diego Leads in Promoting EVs on Twitter Bookmark Alternative Fuels Data Center: San Diego Leads in Promoting EVs on Google Bookmark Alternative Fuels Data Center: San Diego Leads in Promoting EVs on Delicious Rank Alternative Fuels Data Center: San Diego Leads in Promoting EVs on Digg Find More places to share Alternative Fuels Data Center: San Diego Leads in Promoting EVs on AddThis.com... Sept. 3, 2011 San Diego Leads in Promoting EVs W atch how San Diego is leading the way in promoting electric vehicles. For information about this project, contact San Diego Regional Clean Cities

482

Lead Defendant Cases Filed Injunctions - Remands  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

NEPA Cases Filed in 2011 2011 NEPA Case Dispositions NEPA Cases Filed in 2011 2011 NEPA Case Dispositions Lead Defendant Cases Filed Injunctions - Remands Judgment for defendant 79 ARMY-USACE 3 2 Dismissal w/o settlement 20 DHS-USCG 1 1 Settlement 18 DOD 0 0 Adverse dispositions: 29 DOE-Energy 2 0 TRO 0 DOE-FERC 0 0 Preliminary Injunction 5 DOE-NNSA 0 0 Permanent Injunction 3 DOI-BIA 0 0 Remand 21 DOI-BLM 22 8 DOI-BOEM 0 0 Basis for 2011 NEPA Dispositions DOI-BOR 1 2 Jurisdictional - P prevailed 2 DOI-FWS 4 2 Jurisdictional - D prevailed 20 DOI-NPS 4 0 NEPA - Not required 4 DOJ 0 0 NEPA - Is required 4 DOS 0 0 CE - Adequate 5 DOT-FMCSA 1 0 CE - Not Adequate 5 DOT-FAA 3 1 EA - Adequate* 24 DOT-FHWA 14 2 EA - Not Adequate* 5 DOT-FTA 2 0 EIS - Adequate* 32 DOT-STB 0 1 EIS - Not Adequate* 15

483

Passive containment cooling system with drywell pressure regulation for boiling water reactor  

DOE Patents (OSTI)

A boiling water reactor is described having a regulating valve for placing the wetwell in flow communication with an intake duct of the passive containment cooling system. This subsystem can be adjusted to maintain the drywell pressure at (or slightly below or above) wetwell pressure after the initial reactor blowdown transient is over. This addition to the PCCS design has the benefit of eliminating or minimizing steam leakage from the drywell to the wetwell in the longer-term post-LOCA time period and also minimizes the temperature difference between drywell and wetwell. This in turn reduces the rate of long-term pressure buildup of the containment, thereby extending the time to reach the design pressure limit. 4 figures.

Hill, P.R.

1994-12-27T23:59:59.000Z

484

Passive containment cooling system with drywell pressure regulation for boiling water reactor  

DOE Patents (OSTI)

A boiling water reactor having a regulating valve for placing the wetwell in flow communication with an intake duct of the passive containment cooling system. This subsystem can be adjusted to maintain the drywell pressure at (or slightly below or above) wetwell pressure after the initial reactor blowdown transient is over. This addition to the PCCS design has the benefit of eliminating or minimizing steam leakage from the drywell to the wetwell in the longer-term post-LOCA time period and also minimizes the temperature difference between drywell and wetwell. This in turn reduces the rate of long-term pressure buildup of the containment, thereby extending the time to reach the design pressure limit.

Hill, Paul R. (Tucson, AZ)

1994-01-01T23:59:59.000Z

485

Lead Safety Awareness This Bulletin provides information on the safe handling of lead  

E-Print Network (OSTI)

paints, radiation shielding, and ammunition. In addition, the Department has thousands of tons of lead 60 percent of the occurrences resulted in worker exposures and unsafe exposure levels in work spaces-forming system, internal organs, including the reproductive system, kidneys, nervous system, and the brain

486

Biophysics of filament length regulation by molecular motors  

E-Print Network (OSTI)

Regulating physical size is an essential problem that biological organisms must solve from the subcellular to the organismal scales, but it is not well understood what physical principles and mechanisms organisms use to sense and regulate their size. Any biophysical size-regulation scheme operates in a noisy environment and must be robust to other cellular dynamics and fluctuations. This work develops theory of filament length regulation inspired by recent experiments on kinesin-8 motor proteins, which move with directional bias on microtubule filaments and alter microtubule dynamics. Purified kinesin-8 motors can depolymerize chemically-stabilized microtubules. In the length-dependent depolymerization model, the rate of depolymerization tends to increase with filament length, because long filaments accumulate more motors at their tips and therefore shorten more quickly. When balanced with a constant filament growth rate, this mechanism can lead to a fixed polymer length. However, the mechanism by which kinesin-8 motors affect the length of dynamic microtubules in cells is less clear. We study the more biologically realistic problem of microtubule dynamic instability modulated by a motor-dependent increase in the filament catastrophe frequency. This leads to a significant decrease in the mean filament length and a narrowing of the filament length distribution. The results improve our understanding of the biophysics of length regulation in cells.

Hui-Shun Kuan; M. D. Betterton

2013-02-13T23:59:59.000Z

487

Alternative Fuels Data Center: Alabama City Leads With Biodiesel and  

Alternative Fuels and Advanced Vehicles Data Center (EERE)

Alabama City Leads Alabama City Leads With Biodiesel and Ethanol to someone by E-mail Share Alternative Fuels Data Center: Alabama City Leads With Biodiesel and Ethanol on Facebook Tweet about Alternative Fuels Data Center: Alabama City Leads With Biodiesel and Ethanol on Twitter Bookmark Alternative Fuels Data Center: Alabama City Leads With Biodiesel and Ethanol on Google Bookmark Alternative Fuels Data Center: Alabama City Leads With Biodiesel and Ethanol on Delicious Rank Alternative Fuels Data Center: Alabama City Leads With Biodiesel and Ethanol on Digg Find More places to share Alternative Fuels Data Center: Alabama City Leads With Biodiesel and Ethanol on AddThis.com... July 21, 2012 Alabama City Leads With Biodiesel and Ethanol L earn how the City of Hoover uses biodiesel and ethanol to fuel municipal

488

Texas State Regulations  

NLE Websites -- All DOE Office Websites (Extended Search)

Texas Texas State Regulations: Texas State of Texas The Railroad Commission of Texas (RCC), through the Oil and Gas Division, administers oil and gas exploration, development, and production operations, except for oil and gas leasing, royalty payments, surface damages through oil and gas operations, and operator-landowner contracts. The RCC and the Texas Commission on Environmental Quality (TCEQ), formerly, the Texas Natural Resource Conservation Commission (TNRCC), have entered into a Memorandum of Understanding clarifying jurisdiction over oil field wastes generated in connection with oil and gas exploration, development, and production. The RCC Oil and Gas Division operates nine district offices, each staffed with field enforcement and support personnel.

489

Growth regulation by macrophages  

SciTech Connect

The evidence reviewed here indicates that macrophages, either acting alone or in concert with other cells, influence the proliferation of multiple types of cells. Most of the data indicate that these effects are mediated by soluble macrophage-elaborated products (probably proteins) although the role of direct cell-to-cell contacts cannot be ruled out in all cases. A degree of success has been achieved on the biochemical characterization of these factors, due mainly to their low specific activity in conditioned medium and the lack of rapid, specific assays. Understanding the growth-regulating potential of macrophages is an important and needed area of research.

Wharton, W.; Walker, E.; Stewart, C.C.

1982-01-01T23:59:59.000Z

490

San Diego County - Wind Regulations (California) | Department...  

Energy.gov (U.S. Department of Energy (DOE)) Indexed Site

Wind Regulations (California) San Diego County - Wind Regulations (California) < Back Eligibility Commercial Industrial Residential Savings Category Wind Buying & Making...