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in subjects: "Reliability"

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Surprising patterns of CMOS susceptibility to ESD and implications on long-term reliability

CMOS electrostatic discharge (ESD) failures in a product where, by design, the device input terminals are not accessible to ESD led to this study of device susceptibility and an analysis of the long-term reliability of devices in assemblies from that production line. Some surprising patterns of device susceptibility are established and it is shown that the probability of long-term failure in devices whose electrical characteristics have been degraded by electrostatic discharge is small.

Date: January 1, 1980

Creator: Schwank, J.R.; Baker, R.P. & Armendariz, M.G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Gas-cooled fast breeder reactor. Quarterly progress report, February 1-April 30, 1980

Information is presented concerning the reactor vessel; reactivity control mechanisms and instrumentation; reactor internals; primary coolant circuits;core auxiliary cooling system; reactor core; systems engineering; and reactor safety and reliability;

Date: May 1980

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Conductor qualification tests for the 30-MJ Bonneville Power Administration SMES coil

The 30-MJ energy storage coil for the Bonneville Power Administration requires a low-loss, cryostable conductor that is able to carry 4.9 kA in a field of 2.8 T and will maintain its properties over 10/sup 8/ partial discharge cycles. The multi-level cable which satisfies these requirements has been extensively tested at various stages in its development and in its final form. Tests have been performed to determine the effect of manufacturing options on ac losses, low temperature electrical res… more

Date: January 1, 1980

Creator: Schermer, R. I.; Boenig, H. J.; Henke, M.; Turner, R. D. & Schramm, R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Design and operation of an inert gas facility for thermoelectric generator storage

While the flight hardware is protected by design from the harsh environments of space, its in-air storage often requires special protection from contaminants such as dust, moisture and other gases. One of these components, the radioisotope thermoelectric generator (RTG) which powers the missions, was deemed particularly vulnerable to pre-launch aging because the generators remain operational at core temperatures in excess of 1000 degrees centigrade throughout the storage period. Any oxygen perm… more

Date: January 1, 1990

Creator: Goebel, C. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Nuclear plant-aging research on reactor protection systems

This report presents the rsults of a review of the Reactor Trip System (RTS) and the Engineered Safety Feature Actuating System (ESFAS) operating experiences reported in Licensee Event Reports (LER)s, the Nuclear Power Experience data base, Nuclear Plant Reliability Data System, and plant maintenance records. Our purpose is to evaluate the potential significance of aging, including cycling, trips, and testing as contributors to degradation of the RTS and ESFAS. Tables are presented that show th… more

Date: January 1, 1988

Creator: Meyer, L.C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Aging Aircraft NDI Development and Demonstration Center (AANC): An overview

A major center with emphasis on validation of nondestructive inspection techniques for aging aircraft, the Aging Aircraft NDI Development and Demonstration Center (AANC), has been funded by the FAA at Sandia National Laboratories. The Center has been assigned specific tasks in developing techniques for the nondestructive inspection of static engine parts, assessing inspection reliability (POD experiments), developing test beds for nondestructive inspection validation, maintaining a FAA library … more

Date: January 1, 1991

Creator: Walter, P. L.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

A cryogenic system design for the international thermonuclear experimental reactor (ITER)

A conceptual design for ITER was completed last year. The author developed a suitable cryogenic system for ITER as part of this conceptual design effort. An overview of the design is reported. Emphasis is on the fact that cryogenics is a mature science, and a system supporting ITER needs can be made from time-proven components without loss of efficiency or reliability. Because of the large size of the ITER cryogenic system, large numbers of compressors and expanders must be used. Very high reli… more

Date: September 25, 1991

Creator: Slack, D.S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Computational complexity in multidimensional neutron transport theory calculations. Final report

Research to establish a general method to assess the performance and reliability of computer codes for the numerical approximation of linear operators is reported. The neutron transport operator was chosen as model. The general approach to solving the error problem and the use of benchmarks are sketched. This report contains only a brief administrative summary; references are given to forty reports and publications that contain detailed information. (RWR)

Date: December 1, 1979

Creator: Bareiss, E. H.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Technical Area 55 Entry Control System (ECS). [Plutonium facilities]

The exchange badge system which was used at the Plutonium Facility located in Technical Area 55 was replaced on a trial basis with an automated Entry Control System. As a result of the success of the trial system, a new system incorporating expanded features and increased reliability is being implemented. The new Entry Control System incorporates several features not previously available in relatively inexpensive entry systems. The reliability of the system is enhanced by redundant microprocess… more

Date: January 1, 1984

Creator: Beaumont, A.; Brundige, E.; DesJardin, R. & Rivera, R.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Current nuclear industry practices with regard to the integration of surveillances

Commercial nuclear industry practices regarding the integration of technical specification (TS) surveillance and maintenance activities are identified in this report. A questionnaire was developed and used to obtain current industry practices from NRC Regional personnel and INEL engineers with utility experience. Some of these practices indicate that the scheduling of TS surveillance and maintenance items could be more effectively coordinated. Also, must utilities do not formally consider risk … more

Date: April 1, 1992

Creator: Stewart, M. & Smith, C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Choosing and implementing a computer system for plant lubrication: Nine steps to success

Rapid advances in computer software offer may opportunities for increasing efficiency and productivity; however, choosing the right software package and achieving its full potential can be a challenging task. Lubrication engineers faced with the selection and implementation of a computer system will find that they can increase their chance of success when they follow the nine steps outlined in this paper. These steps provide a solid framework for managing the project through its full life-cycle… more

Date: April 3, 1991

Creator: Nook, J. C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Effect of Au on the reliability of fine pitch surface mount solder joints

The effect of Au on the reliability of 0.65 mm pitch surface mount solder joints between plastic quad flat packs and Cu-Ni-Au FR-4 printed circuit boards was investigated. Cu-Ni-Au is a desirable printed circuit board finish for multi-chip modules or printed circuit boards that would otherwise require a selective Au finish, for example for edge connectors or wire bondable parts. However, Au is known to embrittle solder when it is present in sufficiently high concentrations, creating a concern t… more

Date: May 1, 1991

Creator: Glazer, J. (Hewlett-Packard Co., Palo Alto, CA (United States)); Kramer, P. & Morris, J.W. Jr. (Lawrence Berkeley Lab., CA (United States))

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Probability based load criteria for the design of nuclear structures: a critical review of the state-of-the-art

Structures for nuclear power plant facilities must be designed to withstand safely and effectively all kinds of loads and load combinations that may be expected to occur during their lifetime. The traditional methods of structural design attempt to account for the inevitable variability in the loads, material strengths, in-service environments, and fabrication process, etc., through the use of safety factor, allowable stresses or load and resistance factors. These approaches may result in an un… more

Date: April 1, 1981

Creator: Shinozuka, M.; Ellingwood, B.R.; Wang, P.C.; Meyer, C.; Wen, Y.K.; Kao, S. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Improved tunnel resistance of silvered-polymer mirrors

This report documents the research performed at the Solar Energy Research Institute during fiscal year (FY) 1991 to develop ways to prevent delamination failure (known as tunneling) of silvered-polymer reflector materials. Several promising approaches have been identified and demonstrated that substantially reduce such failures. These approaches include (1) use of Tedlar edge tape rather than the manufacturer-recommended ECP-244 tape, (2) thermal treatment of laminated reflector/substrate const… more

Date: October 1, 1991

Creator: Jorgensen, G.; Schissel, P.; Kennedy, C.; Shinton, Y.; Powell, D. & Siebarth, J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Kilowatt isotope power system. Phase II plan. Volume V. Safety, quality assurance and reliability

The development of a Kilowatt Isotope Power System (KIPS) was begun in 1975 for the purpose of satisfying the power requirements of satellites in the 1980's. The KIPS is a /sup 238/PuO/sub 2/-fueled organic Rankine cycle turbine power system to provide a design output of 500 to 2000 W. Included in this volume are: launch and flight safety considerations; quality assurance techniques and procedures to be followed through system fabrication, assembly and inspection; and the reliability program ma… more

Date: March 15, 1978

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Phased-array antenna control by a monolithic photonic integrated circuit, COMPASS

Phased-array antenna systems are well known for rapid beam steering and their ability to bring high power to the target. Such systems are also quite complex and heavy, which have limited their usefulness. The issues of weight, size, power use, and complexity have been addressed through a system named COMPASS (Coherent Optical Monolithic Phased Array Steering System). All phased-array antenna systems need: (1) small size; (2) low power use; (3) high-speed beam steering; and (4) digitally-control… more

Date: January 1, 1991

Creator: Kravitz, S. H.; Hietala, V. M.; Vawter, G. A. & Meyer, W. J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Stack and area tritium monitoring systems for the tokamak fusion test reactor (TFTR)

TFTR Tritium Stack and Area Monitoring Systems have been developed to provide the required level of reliability in a cost effective manner consistent with the mission of the Tritium Handling System on TFTR. Personnel protection, environmental responsibility, and tritium containing system integrity have been the considerations in system design. During the Deuterium-Tritium (D-T) experiments on TFTR, tritium will be used for the first time as one of the fuels. All of the tritium bearing systems w… more

Date: January 1, 1991

Creator: Pearson, G.G.; Meixler, L.D. & Sissingh, R.A.P.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Report on emergency electrical power supply systems for nuclear fuel cycle and reactor facilities security systems

The report includes information that will be useful to those responsible for the planning, design and implementation of emergency electric power systems for physical security and special nuclear materials accountability systems. Basic considerations for establishing the system requirements for emergency electric power for security and accountability operations are presented. Methods of supplying emergency power that are available at present and methods predicted to be available in the future ar… more

Date: January 1, 1977

Item Type: Report

Partner: UNT Libraries Government Documents Department

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The dry heat exchanger calorimeter system

A radiometric isothermal heat flow calorimeter and preconditioner system that uses air instead of water as the heat exchange medium has been developed at Mound. The dry heat exchanger calorimeter is 42 inches high by 18 inches in diameter and the preconditioner is a 22 inch cube, making it extremely compact compared to existing units. The new system is ideally suited for transportable, stand-alone, or glovebox applications. Preliminary tests of the system have produced sample measurements with … more

Date: January 1, 1991

Creator: Renz, D. P.; Wetzel, J. R.; James, S. J.; Kasperski, P. W. & Duff, M. F.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Automatic lighting controls demonstration

The purpose of this work was to demonstrate, in a real building situation, the energy and peak demand reduction capabilities of an electronically ballasted lighting control system that can utilize all types of control strategies to efficiently manage lighting. The project has demonstrated that a state-of-the-art electronically ballasted dimmable lighting system can reduce energy and lighting demand by as least 50% using various combinations of control strategies. By reducing light levels over c… more

Date: March 1, 1990

Creator: Rubinstein, F. & Verderber, R.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Kilowatt Isotope Power System. Phase II plan. Volume III. Addendum evaluation criteria

Preliminary evaluation criteria for the following aspects of the Kilowatt Isotope Power System (KIPS) are discussed: thermal environment of the heat source and the equipment and materials in this thermal environment; start-up requirements; power degradation; micrometeorite protection; control system; reliability and failure made analysis; quality control; cost; and re-entry survivability. (LCL)

Date: January 1, 1977

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Operating and test experience of EBR-II

EBR-2 has operated for 27 years, the longest for any Liquid Metal Reactor (LMR) power plant. During that time, much has been learned about successful LMR operation and design. The basic lesson is that conversatism in design can pay significant dividends in operating reliability. Furthermore, such conservatism need not mean high cost. The EBR-2 system emphasizes simplicity, minimizing the number of valves in the heat transport system, for example, and simplifying the primary heat-transport-syste… more

Date: January 1, 1991

Creator: Sackett, J. I.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Photovoltaic module electrical termination design requirement study

Motorola Inc., in conjunction with ITT Cannon, has conducted a study to develop information to facilitate the selection of existing, commercial, electrical termination hardware for photovoltaic modules and arrays. This volume of the report contains the executive summary. Module and array design parameters were investigated and recommendations were developed for use in surveying, evaluating, and comparing electrical termination hardware. Electrical termination selection criteria factors were dev… more

Date: July 1, 1980

Creator: Mosna, F.J. Jr. & Donlinger, J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

First-year evaluation of a nondestructive assay system for the examination of ORNL TRU waste

The Oak Ridge National Laboratory has been selected as the demonstration site for a new transuranic neutron assay system (NAS) developed at the Los Alamos National Laboratory. In addition, in order to meet specific ORNL program objectives, an upgraded segmented gamma-ray drum scanner has been integrated into the nondestructive assay (NDA) system to serve as a radioisotope identifier and as a quantitative assay backup to the NAS. A verification study, wherein selected waste drums will be emptied… more

Date: April 1, 1984

Creator: Schultz, F. J.; Haff, K. W.; Coffey, D. E.; Norris, L. B.; Caldwell, J. T.; Close, D. A. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department