Sample records for human reliability program

  1. Human Reliability Program Overview

    SciTech Connect (OSTI)

    Bodin, Michael

    2012-09-25T23:59:59.000Z

    This presentation covers the high points of the Human Reliability Program, including certification/decertification, critical positions, due process, organizational structure, program components, personnel security, an overview of the US DOE reliability program, retirees and academia, and security program integration.

  2. Human Reliability Program Workshop

    SciTech Connect (OSTI)

    Landers, John; Rogers, Erin; Gerke, Gretchen

    2014-05-18T23:59:59.000Z

    A Human Reliability Program (HRP) is designed to protect national security as well as worker and public safety by continuously evaluating the reliability of those who have access to sensitive materials, facilities, and programs. Some elements of a site HRP include systematic (1) supervisory reviews, (2) medical and psychological assessments, (3) management evaluations, (4) personnel security reviews, and (4) training of HRP staff and critical positions. Over the years of implementing an HRP, the Department of Energy (DOE) has faced various challenges and overcome obstacles. During this 4-day activity, participants will examine programs that mitigate threats to nuclear security and the insider threat to include HRP, Nuclear Security Culture (NSC) Enhancement, and Employee Assistance Programs. The focus will be to develop an understanding of the need for a systematic HRP and to discuss challenges and best practices associated with mitigating the insider threat.

  3. 2014 Human Reliability Program Workshop

    Broader source: Energy.gov [DOE]

    Announcing The Human Reliability Program Workshop Sponsored by Office of Security (AU-50), U.S Department of Energy In collaboration with NA, NE, EM and SC

  4. Accident Sequence Evaluation Program: Human reliability analysis procedure

    SciTech Connect (OSTI)

    Swain, A.D.

    1987-02-01T23:59:59.000Z

    This document presents a shortened version of the procedure, models, and data for human reliability analysis (HRA) which are presented in the Handbook of Human Reliability Analysis With emphasis on Nuclear Power Plant Applications (NUREG/CR-1278, August 1983). This shortened version was prepared and tried out as part of the Accident Sequence Evaluation Program (ASEP) funded by the US Nuclear Regulatory Commission and managed by Sandia National Laboratories. The intent of this new HRA procedure, called the ''ASEP HRA Procedure,'' is to enable systems analysts, with minimal support from experts in human reliability analysis, to make estimates of human error probabilities and other human performance characteristics which are sufficiently accurate for many probabilistic risk assessments. The ASEP HRA Procedure consists of a Pre-Accident Screening HRA, a Pre-Accident Nominal HRA, a Post-Accident Screening HRA, and a Post-Accident Nominal HRA. The procedure in this document includes changes made after tryout and evaluation of the procedure in four nuclear power plants by four different systems analysts and related personnel, including human reliability specialists. The changes consist of some additional explanatory material (including examples), and more detailed definitions of some of the terms. 42 refs.

  5. Human Reliability Program - Tools for Clinicians | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov.Energy02.pdf7 OPAM Flash2011-37EnergySubmit a Freedom of InformationHughHuman

  6. Human Reliability Program (HRP) - HPMC Occupational Health Services

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football Highdefault SignInstituteDOE Origins ResourcesHuman

  7. Human Reliability Program 10 CFR, part 712 Subpart B Medical Standards

    Broader source: Energy.gov [DOE]

    HRP Policy is the responsibility of the Office of Departmental Personnel Security Policy (HS-1.4). The Office of Worker Safety and Health Assistance (HS-12), has responsibility within the DOE Human Reliability Programs (HRP) to ensure appropriate policies and procedures are in place and used at HQ and the DOE sites to monitor HRP-designated worker's health and fitness-for-duty.

  8. Use of the National Driver Register in the U.S. Department of Energy Human Reliability Program

    SciTech Connect (OSTI)

    Phillip M. Kannan, Center for Human Reliability Studies

    2007-01-01T23:59:59.000Z

    The National Driver Register (NDR) is a complex information network established and maintained by the Secretary of the Department of Transportation (DOT) under the National Driver Register Act of 1982. This report analyzes the question of whether information from the NDR is available to officials making Human Reliability Program (HRP) certification and recertification decisions and to Department of Energy (DOE) personnel security specialists making access authorization determinations.

  9. Distributed Reliable Object-Oriented Programming (DROOP)

    E-Print Network [OSTI]

    Guerraoui, Rachid

    Distributed Reliable Object-Oriented Programming (DROOP) P. Eugster November 3, 2003 Abstract with such failures, coining the term Distributed Reliable Object-Oriented Programming (DROOP). 1 SCOOP

  10. Electricity Delivery and Energy Reliability PROGRAM DESCRIPTION

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

    (PSA) program provides expert technical assistance to states, tribes and regions on electricity policies, programs and market mechanisms that increase access to reliable,...

  11. Sandia National Laboratories: Inverter Reliablity Program

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

    simulations to look for corresponding changes in behavioral parameters of ... Inverter Reliability Program On December 18, 2012, in As scientists and engineers improve the...

  12. The SACADA database for human reliability and human performance

    SciTech Connect (OSTI)

    Y. James Chang; Dennis Bley; Lawrence Criscione; Barry Kirwan; Ali Mosleh; Todd Madary; Rodney Nowell; Robert Richards; Emilie M. Roth; Scott Sieben; Antonios Zoulis

    2014-05-01T23:59:59.000Z

    Lack of appropriate and sufficient human performance data has been identified as a key factor affecting human reliability analysis (HRA) quality especially in the estimation of human error probability (HEP). The Scenario Authoring, Characterization, and Debriefing Application (SACADA) database was developed by the U.S. Nuclear Regulatory Commission (NRC) to address this data need. An agreement between NRC and the South Texas Project Nuclear Operating Company (STPNOC) was established to support the SACADA development with aims to make the SACADA tool suitable for implementation in the nuclear power plants' operator training program to collect operator performance information. The collected data would support the STPNOC's operator training program and be shared with the NRC for improving HRA quality. This paper discusses the SACADA data taxonomy, the theoretical foundation, the prospective data to be generated from the SACADA raw data to inform human reliability and human performance, and the considerations on the use of simulator data for HRA. Each SACADA data point consists of two information segments: context and performance results. Context is a characterization of the performance challenges to task success. The performance results are the results of performing the task. The data taxonomy uses a macrocognitive functions model for the framework. At a high level, information is classified according to the macrocognitive functions of detecting the plant abnormality, understanding the abnormality, deciding the response plan, executing the response plan, and team related aspects (i.e., communication, teamwork, and supervision). The data are expected to be useful for analyzing the relations between context, error modes and error causes in human performance.

  13. Culture Representation in Human Reliability Analysis

    SciTech Connect (OSTI)

    David Gertman; Julie Marble; Steven Novack

    2006-12-01T23:59:59.000Z

    Understanding human-system response is critical to being able to plan and predict mission success in the modern battlespace. Commonly, human reliability analysis has been used to predict failures of human performance in complex, critical systems. However, most human reliability methods fail to take culture into account. This paper takes an easily understood state of the art human reliability analysis method and extends that method to account for the influence of culture, including acceptance of new technology, upon performance. The cultural parameters used to modify the human reliability analysis were determined from two standard industry approaches to cultural assessment: Hofstede’s (1991) cultural factors and Davis’ (1989) technology acceptance model (TAM). The result is called the Culture Adjustment Method (CAM). An example is presented that (1) reviews human reliability assessment with and without cultural attributes for a Supervisory Control and Data Acquisition (SCADA) system attack, (2) demonstrates how country specific information can be used to increase the realism of HRA modeling, and (3) discusses the differences in human error probability estimates arising from cultural differences.

  14. Human Reliability Analysis for Design: Using Reliability Methods for Human Factors Issues

    SciTech Connect (OSTI)

    Ronald Laurids Boring

    2010-11-01T23:59:59.000Z

    This paper reviews the application of human reliability analysis methods to human factors design issues. An application framework is sketched in which aspects of modeling typically found in human reliability analysis are used in a complementary fashion to the existing human factors phases of design and testing. The paper provides best achievable practices for design, testing, and modeling. Such best achievable practices may be used to evaluate and human system interface in the context of design safety certifications.

  15. Human Reliability Analysis for Digital Human-Machine Interfaces

    SciTech Connect (OSTI)

    Ronald L. Boring

    2014-06-01T23:59:59.000Z

    This paper addresses the fact that existing human reliability analysis (HRA) methods do not provide guidance on digital human-machine interfaces (HMIs). Digital HMIs are becoming ubiquitous in nuclear power operations, whether through control room modernization or new-build control rooms. Legacy analog technologies like instrumentation and control (I&C) systems are costly to support, and vendors no longer develop or support analog technology, which is considered technologically obsolete. Yet, despite the inevitability of digital HMI, no current HRA method provides guidance on how to treat human reliability considerations for digital technologies.

  16. Bridging Resilience Engineering and Human Reliability Analysis

    SciTech Connect (OSTI)

    Ronald L. Boring

    2010-06-01T23:59:59.000Z

    There has been strong interest in the new and emerging field called resilience engineering. This field has been quick to align itself with many existing safety disciplines, but it has also distanced itself from the field of human reliability analysis. To date, the discussion has been somewhat one-sided, with much discussion about the new insights afforded by resilience engineering. This paper presents an attempt to address resilience engineering from the perspective of human reliability analysis (HRA). It is argued that HRA shares much in common with resilience engineering and that, in fact, it can help strengthen nascent ideas in resilience engineering. This paper seeks to clarify and ultimately refute the arguments that have served to divide HRA and resilience engineering.

  17. The quantitative failure of human reliability analysis

    SciTech Connect (OSTI)

    Bennett, C.T.

    1995-07-01T23:59:59.000Z

    This philosophical treatise argues the merits of Human Reliability Analysis (HRA) in the context of the nuclear power industry. Actually, the author attacks historic and current HRA as having failed in informing policy makers who make decisions based on risk that humans contribute to systems performance. He argues for an HRA based on Bayesian (fact-based) inferential statistics, which advocates a systems analysis process that employs cogent heuristics when using opinion, and tempers itself with a rational debate over the weight given subjective and empirical probabilities.

  18. Advancing Usability Evaluation through Human Reliability Analysis

    SciTech Connect (OSTI)

    Ronald L. Boring; David I. Gertman

    2005-07-01T23:59:59.000Z

    This paper introduces a novel augmentation to the current heuristic usability evaluation methodology. The SPAR-H human reliability analysis method was developed for categorizing human performance in nuclear power plants. Despite the specialized use of SPAR-H for safety critical scenarios, the method also holds promise for use in commercial off-the-shelf software usability evaluations. The SPAR-H method shares task analysis underpinnings with human-computer interaction, and it can be easily adapted to incorporate usability heuristics as performance shaping factors. By assigning probabilistic modifiers to heuristics, it is possible to arrive at the usability error probability (UEP). This UEP is not a literal probability of error but nonetheless provides a quantitative basis to heuristic evaluation. When combined with a consequence matrix for usability errors, this method affords ready prioritization of usability issues.

  19. Achieving High Reliability Operations Through Multi-Program Integration

    SciTech Connect (OSTI)

    Holly M. Ashley; Ronald K. Farris; Robert E. Richards

    2009-04-01T23:59:59.000Z

    Over the last 20 years the Idaho National Laboratory (INL) has adopted a number of operations and safety-related programs which has each periodically taken its turn in the limelight. As new programs have come along there has been natural competition for resources, focus and commitment. In the last few years, the INL has made real progress in integrating all these programs and are starting to realize important synergies. Contributing to this integration are both collaborative individuals and an emerging shared vision and goal of the INL fully maturing in its high reliability operations. This goal is so powerful because the concept of high reliability operations (and the resulting organizations) is a masterful amalgam and orchestrator of the best of all the participating programs (i.e. conduct of operations, behavior based safety, human performance, voluntary protection, quality assurance, and integrated safety management). This paper is a brief recounting of the lessons learned, thus far, at the INL in bringing previously competing programs into harmony under the goal (umbrella) of seeking to perform regularly as a high reliability organization. In addition to a brief diagram-illustrated historical review, the authors will share the INL’s primary successes (things already effectively stopped or started) and the gaps yet to be bridged.

  20. Human Reliability Analysis for Small Modular Reactors

    SciTech Connect (OSTI)

    Ronald L. Boring; David I. Gertman

    2012-06-01T23:59:59.000Z

    Because no human reliability analysis (HRA) method was specifically developed for small modular reactors (SMRs), the application of any current HRA method to SMRs represents tradeoffs. A first- generation HRA method like THERP provides clearly defined activity types, but these activity types do not map to the human-system interface or concept of operations confronting SMR operators. A second- generation HRA method like ATHEANA is flexible enough to be used for SMR applications, but there is currently insufficient guidance for the analyst, requiring considerably more first-of-a-kind analyses and extensive SMR expertise in order to complete a quality HRA. Although no current HRA method is optimized to SMRs, it is possible to use existing HRA methods to identify errors, incorporate them as human failure events in the probabilistic risk assessment (PRA), and quantify them. In this paper, we provided preliminary guidance to assist the human reliability analyst and reviewer in understanding how to apply current HRA methods to the domain of SMRs. While it is possible to perform a satisfactory HRA using existing HRA methods, ultimately it is desirable to formally incorporate SMR considerations into the methods. This may require the development of new HRA methods. More practicably, existing methods need to be adapted to incorporate SMRs. Such adaptations may take the form of guidance on the complex mapping between conventional light water reactors and small modular reactors. While many behaviors and activities are shared between current plants and SMRs, the methods must adapt if they are to perform a valid and accurate analysis of plant personnel performance in SMRs.

  1. Individual Differences in Human Reliability Analysis

    SciTech Connect (OSTI)

    Jeffrey C. Joe; Ronald L. Boring

    2014-06-01T23:59:59.000Z

    While human reliability analysis (HRA) methods include uncertainty in quantification, the nominal model of human error in HRA typically assumes that operator performance does not vary significantly when they are given the same initiating event, indicators, procedures, and training, and that any differences in operator performance are simply aleatory (i.e., random). While this assumption generally holds true when performing routine actions, variability in operator response has been observed in multiple studies, especially in complex situations that go beyond training and procedures. As such, complexity can lead to differences in operator performance (e.g., operator understanding and decision-making). Furthermore, psychological research has shown that there are a number of known antecedents (i.e., attributable causes) that consistently contribute to observable and systematically measurable (i.e., not random) differences in behavior. This paper reviews examples of individual differences taken from operational experience and the psychological literature. The impact of these differences in human behavior and their implications for HRA are then discussed. We propose that individual differences should not be treated as aleatory, but rather as epistemic. Ultimately, by understanding the sources of individual differences, it is possible to remove some epistemic uncertainty from analyses.

  2. HUMAN RELIABILITY ANALYSIS FOR COMPUTERIZED PROCEDURES

    SciTech Connect (OSTI)

    Ronald L. Boring; David I. Gertman; Katya Le Blanc

    2011-09-01T23:59:59.000Z

    This paper provides a characterization of human reliability analysis (HRA) issues for computerized procedures in nuclear power plant control rooms. It is beyond the scope of this paper to propose a new HRA approach or to recommend specific methods or refinements to those methods. Rather, this paper provides a review of HRA as applied to traditional paper-based procedures, followed by a discussion of what specific factors should additionally be considered in HRAs for computerized procedures. Performance shaping factors and failure modes unique to computerized procedures are highlighted. Since there is no definitive guide to HRA for paper-based procedures, this paper also serves to clarify the existing guidance on paper-based procedures before delving into the unique aspects of computerized procedures.

  3. Web Cube: a Programming Model for Reliable Web Applications

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Web Cube: a Programming Model for Reliable Web Applications I.S.W.B. Prasetya, T.E.J. Vos, S UU-CS-2005-002 www.cs.uu.nl #12;Web Cube: a Programming Model for Reliable Web Applications I@cs.uu.nl, tanja@iti.upv.es, doaitse@cs.uu.nl, bela@cs.ui.ac.id Abstract Web Cube is a server side programming

  4. Nuclear Power - Control, Reliability and Human Factors

    E-Print Network [OSTI]

    of Actinides: Where Do We Stand with the Accelerator Mass Spectrometry Technique? 167 Mario De Cesare Part 2 Reliability and Failure Mechanisms 187 Chapter 10 Evaluation of Dynamic J-R Curve for Leak Before Break Design of Nuclear Reactor Coolant Piping... Network 6. Autonomous Control for Space 7. Radiation-Hard and Intelligent Optical Fiber Sensors 8. Monitoring Radioactivity 9. Origin and Detection of Actinides ? Reliability and Failure Mechanisms 10. Dynamic J-R Curve for Leak Analysis 11...

  5. Sandia National Laboratories: Inverter Reliability Program

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

    Biofuels Biofuels Publications Biochemical Conversion Program Lignocellulosic Biomass Microalgae Thermochemical Conversion Sign up for our E-Newsletter Required.gif?3.21 Email...

  6. Nuclear Power - Control, Reliability and Human Factors 

    E-Print Network [OSTI]

    2011-01-01T23:59:59.000Z

    Instrumentation and Control 49 H.M. Hashemian Chapter 4 Design Considerations for the Implementation of a Mobile IP Telephony System in a Nuclear Power Plant 67 J. Garc?a-Hern?ndez, J. C. Vel?zquez- Hern?ndez, C. F. Garc?a-Hern?ndez and M. A. Vallejo-Alarc?n... Reliability K s e n i i a Sapoz h n i k o v a and Roald Tayma n o v D.I.Mendeleyev Institute for Metrology, Russia 1. Introduction At present, a great number of embedded sens o r devi c es provi d e monito r i n g of operat i n g condi t io n...

  7. Reliability Improvement Programs in Steam Distribution and Power Generation Systems

    E-Print Network [OSTI]

    Petto, S.

    RELIABILITY IIIPROVEfWlT PROGRAMS IN STEAM DISTRIBUTION AND POVER GENERATION SYSTEItS Steve Petto Tech/Serv Corporation Blue Bell, PA Abstract This paper will present alternatives to costly corrective maintenance of the steam trap... In the reliability and efficiency of the system. Recent studies have shownt hat more than 40% of all In stalled steam traps and 20% of certain types of valves need some form of corrective action. The majority of all high backpressure problems In condensate return...

  8. Reliability Improvement Programs in Steam Distribution and Power Generation Systems

    E-Print Network [OSTI]

    Atlas, R. D.

    improvements in the reliability and efficiency of the system. Recent studies have shown that more than 40% of all in stalled steam traps and 20% of certain types of valves n~ed ' some form of corrective action. The majority of all high backpressure... problems in condensate return systems are due to poor design criteria in expanding or retrofitting existing return systems. By instituting a maintenance management program,a 95% reliability can be gained with two to four annual maintenance cyc...

  9. MODELING HUMAN RELIABILITY ANALYSIS USING MIDAS

    SciTech Connect (OSTI)

    Ronald L. Boring; Donald D. Dudenhoeffer; Bruce P. Hallbert; Brian F. Gore

    2006-05-01T23:59:59.000Z

    This paper summarizes an emerging collaboration between Idaho National Laboratory and NASA Ames Research Center regarding the utilization of high-fidelity MIDAS simulations for modeling control room crew performance at nuclear power plants. The key envisioned uses for MIDAS-based control room simulations are: (i) the estimation of human error with novel control room equipment and configurations, (ii) the investigative determination of risk significance in recreating past event scenarios involving control room operating crews, and (iii) the certification of novel staffing levels in control rooms. It is proposed that MIDAS serves as a key component for the effective modeling of risk in next generation control rooms.

  10. Human Genome Program

    SciTech Connect (OSTI)

    Not Available

    1993-01-01T23:59:59.000Z

    The DOE Human Genome program has grown tremendously, as shown by the marked increase in the number of genome-funded projects since the last workshop held in 1991. The abstracts in this book describe the genome research of DOE-funded grantees and contractors and invited guests, and all projects are represented at the workshop by posters. The 3-day meeting includes plenary sessions on ethical, legal, and social issues pertaining to the availability of genetic data; sequencing techniques, informatics support; and chromosome and cDNA mapping and sequencing.

  11. Human Capital Management Accountability Program

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2008-08-01T23:59:59.000Z

    The Order establishes requirements, roles and responsibilities for the Human Capital Management Accountability Program (HCMAP) for human resources programs and personnel and ensures that human capital activities are regulatory and procedurally compliant with Federal statutes and Departmental policies. Does not cancel other directives.

  12. EPRI/NRC-RES fire human reliability analysis guidelines.

    SciTech Connect (OSTI)

    Lewis, Stuart R. (Electric Power Research Institute, Charlotte, NC); Cooper, Susan E. (U.S. Nuclear Regulatory Commission, Rockville, MD); Najafi, Bijan (SAIC, Campbell, CA); Collins, Erin (SAIC, Campbell, CA); Hannaman, Bill (SAIC, Campbell, CA); Kohlhepp, Kaydee (Scientech, Tukwila, WA); Grobbelaar, Jan (Scientech, Tukwila, WA); Hill, Kendra (U.S. Nuclear Regulatory Commission, Rockville, MD); Hendrickson, Stacey M. Langfitt; Forester, John Alan; Julius, Jeff (Scientech, Tukwila, WA)

    2010-03-01T23:59:59.000Z

    During the 1990s, the Electric Power Research Institute (EPRI) developed methods for fire risk analysis to support its utility members in the preparation of responses to Generic Letter 88-20, Supplement 4, 'Individual Plant Examination - External Events' (IPEEE). This effort produced a Fire Risk Assessment methodology for operations at power that was used by the majority of U.S. nuclear power plants (NPPs) in support of the IPEEE program and several NPPs overseas. Although these methods were acceptable for accomplishing the objectives of the IPEEE, EPRI and the U.S. Nuclear Regulatory Commission (NRC) recognized that they required upgrades to support current requirements for risk-informed, performance-based (RI/PB) applications. In 2001, EPRI and the USNRC's Office of Nuclear Regulatory Research (RES) embarked on a cooperative project to improve the state-of-the-art in fire risk assessment to support a new risk-informed environment in fire protection. This project produced a consensus document, NUREG/CR-6850 (EPRI 1011989), entitled 'Fire PRA Methodology for Nuclear Power Facilities' which addressed fire risk for at power operations. NUREG/CR-6850 developed high level guidance on the process for identification and inclusion of human failure events (HFEs) into the fire PRA (FPRA), and a methodology for assigning quantitative screening values to these HFEs. It outlined the initial considerations of performance shaping factors (PSFs) and related fire effects that may need to be addressed in developing best-estimate human error probabilities (HEPs). However, NUREG/CR-6850 did not describe a methodology to develop best-estimate HEPs given the PSFs and the fire-related effects. In 2007, EPRI and RES embarked on another cooperative project to develop explicit guidance for estimating HEPs for human failure events under fire generated conditions, building upon existing human reliability analysis (HRA) methods. This document provides a methodology and guidance for conducting a fire HRA. This process includes identification and definition of post-fire human failure events, qualitative analysis, quantification, recovery, dependency, and uncertainty. This document provides three approaches to quantification: screening, scoping, and detailed HRA. Screening is based on the guidance in NUREG/CR-6850, with some additional guidance for scenarios with long time windows. Scoping is a new approach to quantification developed specifically to support the iterative nature of fire PRA quantification. Scoping is intended to provide less conservative HEPs than screening, but requires fewer resources than a detailed HRA analysis. For detailed HRA quantification, guidance has been developed on how to apply existing methods to assess post-fire fire HEPs.

  13. Fifty Years of THERP and Human Reliability Analysis

    SciTech Connect (OSTI)

    Ronald L. Boring

    2012-06-01T23:59:59.000Z

    In 1962 at a Human Factors Society symposium, Alan Swain presented a paper introducing a Technique for Human Error Rate Prediction (THERP). This was followed in 1963 by a Sandia Laboratories monograph outlining basic human error quantification using THERP and, in 1964, by a special journal edition of Human Factors on quantification of human performance. Throughout the 1960s, Swain and his colleagues focused on collecting human performance data for the Sandia Human Error Rate Bank (SHERB), primarily in connection with supporting the reliability of nuclear weapons assembly in the US. In 1969, Swain met with Jens Rasmussen of Risø National Laboratory and discussed the applicability of THERP to nuclear power applications. By 1975, in WASH-1400, Swain had articulated the use of THERP for nuclear power applications, and the approach was finalized in the watershed publication of the NUREG/CR-1278 in 1983. THERP is now 50 years old, and remains the most well known and most widely used HRA method. In this paper, the author discusses the history of THERP, based on published reports and personal communication and interviews with Swain. The author also outlines the significance of THERP. The foundations of human reliability analysis are found in THERP: human failure events, task analysis, performance shaping factors, human error probabilities, dependence, event trees, recovery, and pre- and post-initiating events were all introduced in THERP. While THERP is not without its detractors, and it is showing signs of its age in the face of newer technological applications, the longevity of THERP is a testament of its tremendous significance. THERP started the field of human reliability analysis. This paper concludes with a discussion of THERP in the context of newer methods, which can be seen as extensions of or departures from Swain’s pioneering work.

  14. Human Reliability Program Handbook | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov.Energy02.pdf7 OPAM Flash2011-37EnergySubmit a Freedom of

  15. Human genome. 1993 Program report

    SciTech Connect (OSTI)

    Not Available

    1994-03-01T23:59:59.000Z

    The purpose of this report is to update the Human Genome 1991-92 Program Report and provide new information on the DOE genome program to researchers, program managers, other government agencies, and the interested public. This FY 1993 supplement includes abstracts of 60 new or renewed projects and listings of 112 continuing and 28 completed projects. These two reports, taken together, present the most complete published view of the DOE Human Genome Program through FY 1993. Research is progressing rapidly toward 15-year goals of mapping and sequencing the DNA of each of the 24 different human chromosomes.

  16. Issues in benchmarking human reliability analysis methods : a literature review.

    SciTech Connect (OSTI)

    Lois, Erasmia (US Nuclear Regulatory Commission); Forester, John Alan; Tran, Tuan Q. (Idaho National Laboratory, Idaho Falls, ID); Hendrickson, Stacey M. Langfitt; Boring, Ronald L. (Idaho National Laboratory, Idaho Falls, ID)

    2008-04-01T23:59:59.000Z

    There is a diversity of human reliability analysis (HRA) methods available for use in assessing human performance within probabilistic risk assessment (PRA). Due to the significant differences in the methods, including the scope, approach, and underlying models, there is a need for an empirical comparison investigating the validity and reliability of the methods. To accomplish this empirical comparison, a benchmarking study is currently underway that compares HRA methods with each other and against operator performance in simulator studies. In order to account for as many effects as possible in the construction of this benchmarking study, a literature review was conducted, reviewing past benchmarking studies in the areas of psychology and risk assessment. A number of lessons learned through these studies are presented in order to aid in the design of future HRA benchmarking endeavors.

  17. Medical Aspects of Reliability

    SciTech Connect (OSTI)

    Atencio, Julian J.

    2014-05-05T23:59:59.000Z

    This presentation covers the medical evaluation as part of a human reliability program, particularly the various medical qualifications and potential disqualifiers.

  18. IDHEAS – A NEW APPROACH FOR HUMAN RELIABILITY ANALYSIS

    SciTech Connect (OSTI)

    G. W. Parry; J.A Forester; V.N. Dang; S. M. L. Hendrickson; M. Presley; E. Lois; J. Xing

    2013-09-01T23:59:59.000Z

    This paper describes a method, IDHEAS (Integrated Decision-Tree Human Event Analysis System) that has been developed jointly by the US NRC and EPRI as an improved approach to Human Reliability Analysis (HRA) that is based on an understanding of the cognitive mechanisms and performance influencing factors (PIFs) that affect operator responses. The paper describes the various elements of the method, namely the performance of a detailed cognitive task analysis that is documented in a crew response tree (CRT), and the development of the associated time-line to identify the critical tasks, i.e. those whose failure results in a human failure event (HFE), and an approach to quantification that is based on explanations of why the HFE might occur.

  19. Contractor Human Resource Management Programs

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1996-09-30T23:59:59.000Z

    The purpose of this directive is to establish Department of Energy (DOE) responsibilities and requirements for the management and oversight of contractor Human Resource Management (HR) programs. Chg 1, 5-8-98; Chg 2, 11-22-09

  20. Contractor Human Resource Management Programs

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1996-09-30T23:59:59.000Z

    The purpose of this directive is to establish Department of Energy (DOE) responsibilities and requirements for the management and oversight of contractor Human Resource Management (HR) programs. Chg 1, 5-8-98; Chg 2, 11-22-09.

  1. The NUCLARR databank: Human reliability and hardware failure data for the nuclear power industry

    SciTech Connect (OSTI)

    Reece, W.J.

    1993-05-01T23:59:59.000Z

    Under the sponsorship of the US Nuclear Regulatory Commission (NRC), the Nuclear Computerized Library for Assessing Reactor Reliability (NUCLARR) was developed to provide human reliability and hardware failure data to analysts in the nuclear power industry. This IBM-compatible databank is contained on a set of floppy diskettes which include data files and a menu-driven system for locating, reviewing, sorting, and retrieving the data. NUCLARR contains over 2500 individual data records, drawn from more, than 60 sources. The system is upgraded annually, to include additional human error and hardware component failure data and programming enhancements (i.e., increased user-friendliness). NUCLARR is available from the NRC through project staff at the INEL.

  2. Qualitative human reliability analysis for spent fuel handling

    SciTech Connect (OSTI)

    Brewer, J. D. [Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185-0748 (United States); Amico, P. [Science Applications International Corporation (United States); Cooper, S. E. [United Stated Nuclear Regulatory Commission (United States)

    2006-07-01T23:59:59.000Z

    Human reliability analysis (HRA) methods have been developed primarily to provide information for use in probabilistic risk assessments (PRAs) that analyze nuclear power plant (NPP) operations. Given the original emphasis of these methods, it is understandable that many HRAs have not ventured far from NPP control room applications. Despite this historical focus on the control room, there has been growing interest and discussion regarding the application of HRA methods to other NPP activities such as spent fuel handling (SFH) or operations in different types of facilities. One recently developed HRA method, 'A Technique for Human Event Analysis' (ATHEANA) has been proposed as a promising candidate for diverse applications due to its particular approach for systematically uncovering the dynamic, contextual conditions influencing human performance. This paper describes one successful test of this proposition by presenting portions of a recently completed project in which a scoping study was performed to accomplish the following goals: (1) investigate what should be included in a qualitative HRA for spent fuel and cask handling operations; and (2) demonstrate that the ATHEANA HRA technique can be usefully applied to these operations. The preliminary, scoping qualitative HRA examined, in a generic manner, how human performance of SFH and dry cask storage operations (DCSOs) can plausibly lead to radiological consequences that impact the public and the environment. The study involved the performance of typical, qualitative HRA tasks such as collecting relevant information and the preliminary identification of human failure events or unsafe actions, relevant influences (e.g., performance shaping factors, other contextual factors), event scenario development and categorization of human failure event (HFE) scenario groupings. Information from relevant literature sources was augmented with subject matter expert interviews and analysis of an edited video of selected operations. Elements of NUREG-1792, Good Practices for Implementing Human Reliability Analyses (HRA) and NUREG-1624, Rev. 1, Technical Basis and Implementation Guidelines for A Technique for Human Event Analysis (ATHEANA) formed critical parts of the technical basis for the preliminary analysis. Mis-loading of spent fuel into a cask and dropping of a loaded cask were the two human failure event groupings of primary interest, although all human performance aspects of DCSOs were considered to some extent. Of important note is that HRA is typically performed in the context of a plant-specific PRA study. This analysis was performed without the benefit of the context provided by a larger PRA study, nor was it plant specific, and so it investigated only generic HRA issues relevant to SFH. However, the improved understanding of human performance issues provided by the study will likely enhance the ability to carry out a detailed qualitative HRA for a specific NPP at some point in the future. Furthermore, support was obtained regarding the potential for applying ATHEANA beyond NPP settings. This paper provides a description of the process followed during the analysis, a description of the HFE scenario groupings, discussion regarding general human performance vulnerabilities, and a detailed examination of one HFE scenario developed in the study. (authors)

  3. Current Human Reliability Analysis Methods Applied to Computerized Procedures

    SciTech Connect (OSTI)

    Ronald L. Boring

    2012-06-01T23:59:59.000Z

    Computerized procedures (CPs) are an emerging technology within nuclear power plant control rooms. While CPs have been implemented internationally in advanced control rooms, to date no US nuclear power plant has implemented CPs in its main control room (Fink et al., 2009). Yet, CPs are a reality of new plant builds and are an area of considerable interest to existing plants, which see advantages in terms of enhanced ease of use and easier records management by omitting the need for updating hardcopy procedures. The overall intent of this paper is to provide a characterization of human reliability analysis (HRA) issues for computerized procedures. It is beyond the scope of this document to propose a new HRA approach or to recommend specific methods or refinements to those methods. Rather, this paper serves as a review of current HRA as it may be used for the analysis and review of computerized procedures.

  4. Maximizing Energy Savings Reliability in BC Hydro Industrial Demand-side Management Programs

    E-Print Network [OSTI]

    Victoria, University of

    Maximizing Energy Savings Reliability in BC Hydro Industrial Demand-side Management Programs Supervisory Committee Maximizing Energy Savings Reliability in BC Hydro Industrial Demand-side Management of Environmental Studies) Departmental Member For energy utilities faced with expanded jurisdictional energy

  5. Procedure for conducting a human-reliability analysis for nuclear power plants. Final report

    SciTech Connect (OSTI)

    Bell, B.J.; Swain, A.D.

    1983-05-01T23:59:59.000Z

    This document describes in detail a procedure to be followed in conducting a human reliability analysis as part of a probabilistic risk assessment when such an analysis is performed according to the methods described in NUREG/CR-1278, Handbook for Human Reliability Analysis with Emphasis on Nuclear Power Plant Applications. An overview of the procedure describing the major elements of a human reliability analysis is presented along with a detailed description of each element and an example of an actual analysis. An appendix consists of some sample human reliability analysis problems for further study.

  6. actions human reliability: Topics by E-print Network

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

    reliability is not easy Paris-Sud XI, Universit de 171 Software Reliability Using SPC and Weibull Order Statistics CiteSeer Summary: Control charts are widely used for...

  7. Contractor Human Resource Management Programs

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1996-09-29T23:59:59.000Z

    This directive establishes DOE responsibilities and requirements for the management and oversight of contractor Human Resource Management (HR) programs. Chg 1, 5-8-98; Chg 2, 11-22-09; Chg 3, 2-23-10; Chg 4, 4-29-13. DOE O 350.1 Chg 5, dated 9-30-2014, cancels Chapters I-III of DOE O 350.1 Chg 4

  8. Contractor Human Resource Management Programs

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1996-09-30T23:59:59.000Z

    The purpose of this directive is to establish Department of Energy (DOE) responsibilities and requirements for the management and oversight of contractor Human Resource Management (HR) programs. Chg 1, 5-8-98; Chg 2, 11-22-09; Chg 3, 2-23-10; Chg 4, 4-29-13. This order cancels DOE O 3220.1A, DOE O 3220.4A, DOE O 3220.6A, and DOE O 3309.1A.

  9. An Unsupervised Decontamination Procedure For Improving The Reliability Of Human Judgments

    E-Print Network [OSTI]

    Mozer, Michael C.

    An Unsupervised Decontamination Procedure For Improving The Reliability Of Human Judgments Michael decontaminate a series of ratings to obtain more mean- ingful human judgments. In our formulation, the problem

  10. Contractor Human Resource Management Programs

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1996-09-30T23:59:59.000Z

    This directive establishes DOE responsibilities and requirements for the management and oversight of contractor Human Resource Management (HR) programs. Chg 1, 5-8-98; Chg 2, 11-22-09; Chg 3, 2-23-10; Chg 4, 4-29-13. DOE O 350.1 Chg 5, dated 9-30-2014, cancels DOE O 350.1 Chg 4. The Order is revised to reflect the cancellation of Chapters 1-3 due to the incorporation of these chapters into DOE Order 350.3; reflect organizational changes; delete reference to the DOE Retrospective Rating Insurance Plan, which is no longer available; remove the CRD from Chapter VII.

  11. The Cognitive Environment Simulation as a tool for modeling human performance and reliability

    SciTech Connect (OSTI)

    Woods, D.D. (Ohio State Univ., Columbus, OH (USA). Cognitive Systems Engineering Lab.); Pople, H.E. Jr. (Seer Systems (USA)); Roth, E.M. (Westinghouse Electric Corp., Pittsburgh, PA (USA). Science and Technology Center)

    1990-06-01T23:59:59.000Z

    The US Nuclear Regulatory Commission is sponsoring a program to develop improved methods to model the cognitive behavior of nuclear power plant (NPP) personnel. A tool called Cognitive Environment Simulation (CES) was developed for simulating how people form intentions to act in NPP emergencies. CES provides an analytic tool for exploring plausible human responses in emergency situations. In addition a methodology called Cognitive Reliability Assessment Technique (CREATE) was developed that describes how CES can be used to provide input to human reliability analyses (HRA) in probabilistic risk assessment (PRA) studies. This report describes the results of three activities that were performed to evaluate CES/CREATE: (1) A technical review was conducted by a panel of experts in cognitive modeling, PRA and HRA; (2) CES was exercised on steam generator tube rupture incidents for which data on operator performance exist; (3) a workshop with HRA practitioners was held to analyze a worked example'' of the CREATE methodology. The results of all three evaluations indicate that CES/CREATE is a promising approach for modeling intention formation. Volume 1 provides a summary of the results. This document, Volume 2, provides details on the three evaluations, including the CES computer outputs for the tube rupture events. 18 refs., 9 figs., 5 tabs.

  12. The Cognitive Environment Simulation as a tool for modeling human performance and reliability

    SciTech Connect (OSTI)

    Woods, D.D. (Ohio State Univ., Columbus, OH (USA). Cognitive Systems Engineering Lab.); Pople, H.E. Jr. (Seer Systems (USA)); Roth, E.M. (Westinghouse Electric Corp., Pittsburgh, PA (USA). Science and Technology Center)

    1990-06-01T23:59:59.000Z

    The US Nuclear Regulatory Commission is sponsoring a program to develop improved methods to model the cognitive behavior of nuclear power plant (NPP) personnel. A tool called Cognitive Environment Simulation (CES) was developed for simulating how people form intentions to act in NPP emergencies. CES provides an analytic tool for exploring plausible human response in emergency situations. In addition a methodology called Cognitive Reliability Assessment Technique (CREATE) was developed that describes how CES can be used to provide input to human reliability analyses (HRA) in probabilistic risk assessment (PRA) studies. This report describes the results of three activities that were performed to evaluate CES/CREATE: (1) A technical review was conducted by a panel of experts in cognitive modeling, PRA and HRA; (2) CES was exercised on steam generator tube rupture incidents for which data on operator performance exist; (3) a workshop with HRA practitioners was held to analyze a worked example'' of the CREATE methodology. The results of all three evaluations indicate that CES/CREATE is a promising approach for modeling intention formation. This document, Volume 1 provides a summary of the results. Volume 2 provides details on three evaluations, including the CES computer outputs for the tube rupture events. 14 refs., 3 figs.

  13. Dynamic Human Reliability Analysis: Benefits and Challenges of Simulating Human Performance

    SciTech Connect (OSTI)

    R. L. Boring

    2007-06-01T23:59:59.000Z

    To date, there has been considerable work on dynamic event trees and other areas related to dynamic probabilistic safety assessment (PSA). The counterpart to these efforts in human reliability analysis (HRA) has centered on the development of specific methods to account for the dynamic nature of human performance. In this paper, the author posits that the key to dynamic HRA is not in the development of specific methods but in the utilization of cognitive modeling and simulation to produce a framework of data that may be used in quantifying the likelihood of human error. This paper provides an overview of simulation approaches to HRA; reviews differences between first, second, and dynamic generation HRA; and outlines potential benefits and challenges of this approach.

  14. Human Capital Management Accountability Program (HCMAP) | Department...

    Energy Savers [EERE]

    HR metrics that assist human resources professionals in identifying program and organizational discrepancies. Documents Available for Download May 30, 2014 DOE Plan for 2302(c)...

  15. A Reliable-Inference Framework for Recognition of Human Actions James W. Davis Ambrish Tyagi

    E-Print Network [OSTI]

    Davis, James W.

    A Reliable-Inference Framework for Recognition of Human Actions James W. Davis Ambrish Tyagi Dept. of Computer and Information Science Ohio State University Columbus, OH 43210 USA {jwdavis,tyagia}@cis.ohio are considered, this domain is a particularly good experimental testbed for the reliable-inference approach. We

  16. DEVELOPMENT PROGRAMS FOR ONE-SHOT SYSTEMS USING MULTIPLE-STATE DESIGN RELIABILITY MODELS

    E-Print Network [OSTI]

    semiconductors, microelectronics, lasers, electronic devices, and mechanical components, to obtain timely information on the reliability of both products and components. Breyfogle [5] and Meeker and Escobar [4] note1 DEVELOPMENT PROGRAMS FOR ONE-SHOT SYSTEMS USING MULTIPLE-STATE DESIGN RELIABILITY MODELS

  17. Science-Based Simulation Model of Human Performance for Human Reliability Analysis

    SciTech Connect (OSTI)

    Dana L. Kelly; Ronald L. Boring; Ali Mosleh; Carol Smidts

    2011-10-01T23:59:59.000Z

    Human reliability analysis (HRA), a component of an integrated probabilistic risk assessment (PRA), is the means by which the human contribution to risk is assessed, both qualitatively and quantitatively. However, among the literally dozens of HRA methods that have been developed, most cannot fully model and quantify the types of errors that occurred at Three Mile Island. Furthermore, all of the methods lack a solid empirical basis, relying heavily on expert judgment or empirical results derived in non-reactor domains. Finally, all of the methods are essentially static, and are thus unable to capture the dynamics of an accident in progress. The objective of this work is to begin exploring a dynamic simulation approach to HRA, one whose models have a basis in psychological theories of human performance, and whose quantitative estimates have an empirical basis. This paper highlights a plan to formalize collaboration among the Idaho National Laboratory (INL), the University of Maryland, and The Ohio State University (OSU) to continue development of a simulation model initially formulated at the University of Maryland. Initial work will focus on enhancing the underlying human performance models with the most recent psychological research, and on planning follow-on studies to establish an empirical basis for the model, based on simulator experiments to be carried out at the INL and at the OSU.

  18. Reliable and Efficient Programming Abstractions for Wireless Sensor Networks

    E-Print Network [OSTI]

    Kothari, Nupur; Gummadi, Ramakrishna; Millstein, Todd; Govindan, Ramesh

    2007-01-01T23:59:59.000Z

    Macro-programming wireless sensor networks using Kairos. InAbstractions for Wireless Sensor Networks Nupur Kothari ?Keywords Wireless Sensor Networks, Macroprogramming, En-

  19. Advanced control rooms and crew performance issues: Implications for human reliability

    SciTech Connect (OSTI)

    O'Hara, J.M.; Hall, R.E.

    1991-01-01T23:59:59.000Z

    Recent trends in advanced control room (ACR) design are considered with respect to their impact on human performance. It is concluded that potentially negative influences exist, however, a variety of factors make it difficult to model, analyze, and quantify these effects for human reliability analyses (HRAs).

  20. Advanced control rooms and crew performance issues: Implications for human reliability

    SciTech Connect (OSTI)

    O`Hara, J.M.; Hall, R.E.

    1991-12-31T23:59:59.000Z

    Recent trends in advanced control room (ACR) design are considered with respect to their impact on human performance. It is concluded that potentially negative influences exist, however, a variety of factors make it difficult to model, analyze, and quantify these effects for human reliability analyses (HRAs).

  1. Knowledge-base for the new human reliability analysis method, A Technique for Human Error Analysis (ATHEANA)

    SciTech Connect (OSTI)

    Cooper, S.E. [Science Application International Corp., Reston, VA (United States); Wreathall, J. [John Wreathall & Co., Dublin, OH (United States); Thompson, C.M., Drouin, M. [Nuclear Regulatory Commission, Washington, DC (United States); Bley, D.C. [Buttonwood Consulting, Inc., Oakton, VA (United States)

    1996-10-01T23:59:59.000Z

    This paper describes the knowledge base for the application of the new human reliability analysis (HRA) method, a ``A Technique for Human Error Analysis`` (ATHEANA). Since application of ATHEANA requires the identification of previously unmodeled human failure events, especially errors of commission, and associated error-forcing contexts (i.e., combinations of plant conditions and performance shaping factors), this knowledge base is an essential aid for the HRA analyst.

  2. Handbook of human-reliability analysis with emphasis on nuclear power plant applications. Final report

    SciTech Connect (OSTI)

    Swain, A D; Guttmann, H E

    1983-08-01T23:59:59.000Z

    The primary purpose of the Handbook is to present methods, models, and estimated human error probabilities (HEPs) to enable qualified analysts to make quantitative or qualitative assessments of occurrences of human errors in nuclear power plants (NPPs) that affect the availability or operational reliability of engineered safety features and components. The Handbook is intended to provide much of the modeling and information necessary for the performance of human reliability analysis (HRA) as a part of probabilistic risk assessment (PRA) of NPPs. Although not a design guide, a second purpose of the Handbook is to enable the user to recognize error-likely equipment design, plant policies and practices, written procedures, and other human factors problems so that improvements can be considered. The Handbook provides the methodology to identify and quantify the potential for human error in NPP tasks.

  3. Using Information from Operating Experience to Inform Human Reliability Analysis

    SciTech Connect (OSTI)

    Bruce P. Hallbert; David I. Gertman; Julie Marble; Erasmia Lois; Nathan Siu

    2004-06-01T23:59:59.000Z

    This paper reports on efforts being sponsored by the U.S. NRC and performed by INEEL to develop a technical basis and perform work to extract information from sources for use in HRA. The objectives of this work are to: 1) develop a method for conducting risk-informed event analysis of human performance information that stems from operating experience at nuclear power plants and for compiling and documenting the results in a structured manner; 2) provide information from these analyses for use in risk-informed and performance-based regulatory activities; 3) create methods for information extraction and a repository for this information that, likewise, support HRA methods and their applications.

  4. T-TV-T^ sr^i Ris-R-597(EN) A ComputerProgram forReliability

    E-Print Network [OSTI]

    T-TV-T^ sr^i Risø-R-597(EN) SIMON A ComputerProgram forReliability and Statistical Analysis using and Statistical Analysis using Monte Carlo Simulation Program Description and Manual Hans ErikKøngsø and Kmt for calculation of reliability and statistical analy- sis. The program is of the Monte Carlo type

  5. Microgrid Reliability Modeling and Battery Scheduling Using Stochastic Linear Programming

    SciTech Connect (OSTI)

    Cardoso, Goncalo; Stadler, Michael; Siddiqui, Afzal; Marnay, Chris; DeForest, Nicholas; Barbosa-Povoa, Ana; Ferrao, Paulo

    2013-05-23T23:59:59.000Z

    This paper describes the introduction of stochastic linear programming into Operations DER-CAM, a tool used to obtain optimal operating schedules for a given microgrid under local economic and environmental conditions. This application follows previous work on optimal scheduling of a lithium-iron-phosphate battery given the output uncertainty of a 1 MW molten carbonate fuel cell. Both are in the Santa Rita Jail microgrid, located in Dublin, California. This fuel cell has proven unreliable, partially justifying the consideration of storage options. Several stochastic DER-CAM runs are executed to compare different scenarios to values obtained by a deterministic approach. Results indicate that using a stochastic approach provides a conservative yet more lucrative battery schedule. Lower expected energy bills result, given fuel cell outages, in potential savings exceeding 6percent.

  6. A limited assessment of the ASEP human reliability analysis procedure using simulator examination results

    SciTech Connect (OSTI)

    Gore, B.R.; Dukelow, J.S. Jr.; Mitts, T.M.; Nicholson, W.L. [Pacific Northwest Lab., Richland, WA (United States)

    1995-10-01T23:59:59.000Z

    This report presents a limited assessment of the conservatism of the Accident Sequence Evaluation Program (ASEP) human reliability analysis (HRA) procedure described in NUREG/CR-4772. In particular, the, ASEP post-accident, post-diagnosis, nominal HRA procedure is assessed within the context of an individual`s performance of critical tasks on the simulator portion of requalification examinations administered to nuclear power plant operators. An assessment of the degree to which operator perforn:Lance during simulator examinations is an accurate reflection of operator performance during actual accident conditions was outside the scope of work for this project; therefore, no direct inference can be made from this report about such performance. The data for this study are derived from simulator examination reports from the NRC requalification examination cycle. A total of 4071 critical tasks were identified, of which 45 had been failed. The ASEP procedure was used to estimate human error probability (HEP) values for critical tasks, and the HEP results were compared with the failure rates observed in the examinations. The ASEP procedure was applied by PNL operator license examiners who supplemented the limited information in the examination reports with expert judgment based upon their extensive simulator examination experience. ASEP analyses were performed for a sample of 162 critical tasks selected randomly from the 4071, and the results were used to characterize the entire population. ASEP analyses were also performed for all of the 45 failed critical tasks. Two tests were performed to assess the bias of the ASEP HEPs compared with the data from the requalification examinations. The first compared the average of the ASEP HEP values with the fraction of the population actually failed and it found a statistically significant factor of two bias on the average.

  7. Evaluation of the use of engineering judgements applied to analytical human reliablity analysis methods (HRA)

    E-Print Network [OSTI]

    Kohlhepp, Katherine D.

    2006-04-12T23:59:59.000Z

    Due to the scarcity of Human Reliability Analysis (HRA) data, one of the key elements of any HRA analysis is use of engineering judgment. The Electric Power Research Institute (EPRI) HRA Calculator guides the user through the steps of any HRA...

  8. Bringing you a prosperous future where energy is clean, abundant, reliable and affordable Industrial Technologies Program

    E-Print Network [OSTI]

    Beckermann, Christoph

    Industrial Technologies Program U.S. Department of Energy Office of Energy Efficiency and Renewable Energy of Energy Efficiency and Renewable Energy invests in a diverse portfolio of energy technologies. For moreBringing you a prosperous future where energy is clean, abundant, reliable and affordable

  9. 2014 DOE Human Reliability Program (HRP) Workshop | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartment ofCBFO-13-3322(EE)Department of EnergyOffice14 U.S.2014 DOE

  10. 2014 DOE Human Reliability Program (HRP) Workshop | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0 ARRA Newsletters 2010 ARRA Newsletters American20122 Wind20132014 ChiefDOE

  11. Human Reliability Program - Tools for Clinicians | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't YourTransport(Fact Sheet), GeothermalGridHYDROGEND D e e pShade Your Homeof Energythe 7

  12. Fast, Cheap, and Under Control: Evaluating Revision Data Reliably Daghstuhl: Mining Programs and Processes Fast, Cheap and Under Control

    E-Print Network [OSTI]

    Godfrey, Michael W.

    release time Abram Hindle 5 #12;Fast, Cheap, and Under Control: Evaluating Revision Data ReliablyFast, Cheap, and Under Control: Evaluating Revision Data Reliably Daghstuhl: Mining Programs and Processes Fast, Cheap and Under Control: Evaluating Revision Data Reliably Abram Hindle, Michael W. Godfrey

  13. Crucial role of detailed function, task, timeline, link and human vulnerability analyses in HRA. [Human Reliability Analysis (HRA)

    SciTech Connect (OSTI)

    Ryan, T.G.; Haney, L.N.; Ostrom, L.T.

    1992-01-01T23:59:59.000Z

    This paper addresses one major cause for large uncertainties in human reliability analysis (HRA) results, that is, an absence of detailed function, task, timeline, link and human vulnerability analyses. All too often this crucial step in the HRA process is done in a cursory fashion using word of mouth or written procedures which themselves may incompletely or inaccurately represent the human action sequences and human error vulnerabilities being analyzed. The paper examines the potential contributions these detailed analyses can make in achieving quantitative and qualitative HRA results which are: (1) creditable, that is, minimize uncertainty, (2) auditable, that is, systematically linking quantitative results and qualitative information from which the results are derived, (3) capable of supporting root cause analyses on human reliability factors determined to be major contributors to risk, and (4) capable of repeated measures and being combined with similar results from other analyses to examine HRA issues transcending individual systems and facilities. Based on experience analyzing test and commercial nuclear reactors, and medical applications of nuclear technology, an iterative process is suggested for doing detailed function, task, timeline, link and human vulnerability analyses using documentation reviews, open-ended and structured interviews, direct observations, and group techniques. Finally, the paper concludes that detailed analyses done in this manner by knowledgeable human factors practitioners, can contribute significantly to the credibility, auditability, causal factor analysis, and combining goals of the HRA.

  14. An overview of the evolution of human reliability analysis in the context of probabilistic risk assessment.

    SciTech Connect (OSTI)

    Bley, Dennis C. (Buttonwood Consulting Inc., Oakton, VA); Lois, Erasmia (U.S. Nuclear Regulatory Commission, Washington, DC); Kolaczkowski, Alan M. (Science Applications International Corporation, Eugene, OR); Forester, John Alan; Wreathall, John (John Wreathall and Co., Dublin, OH); Cooper, Susan E. (U.S. Nuclear Regulatory Commission, Washington, DC)

    2009-01-01T23:59:59.000Z

    Since the Reactor Safety Study in the early 1970's, human reliability analysis (HRA) has been evolving towards a better ability to account for the factors and conditions that can lead humans to take unsafe actions and thereby provide better estimates of the likelihood of human error for probabilistic risk assessments (PRAs). The purpose of this paper is to provide an overview of recent reviews of operational events and advances in the behavioral sciences that have impacted the evolution of HRA methods and contributed to improvements. The paper discusses the importance of human errors in complex human-technical systems, examines why humans contribute to accidents and unsafe conditions, and discusses how lessons learned over the years have changed the perspective and approach for modeling human behavior in PRAs of complicated domains such as nuclear power plants. It is argued that it has become increasingly more important to understand and model the more cognitive aspects of human performance and to address the broader range of factors that have been shown to influence human performance in complex domains. The paper concludes by addressing the current ability of HRA to adequately predict human failure events and their likelihood.

  15. Human-reliability data bank for nuclear-power-plant operations. Volume 2. A data-bank concept and system description

    SciTech Connect (OSTI)

    Comer, M.K.; Kozinsky, E.J.; Eckel, J.S.; Miller, D.P.

    1983-02-01T23:59:59.000Z

    The US Nuclear Regulatory Commission (NRC) is conducting a research program to determine the need for a human-reliability data bank unique to the nuclear industry. This report, in describing a proposed data bank, focuses primarily on four requirements: human-performance data collection, treatment, structuring (storage), and retrieval. Four data-collection methods are proposed: three are extensions to existing systems (i.e., Licensee Event Reports (LER), Nuclear Plant Reliability Data System (NPRDS), and Plant Incident Reports (PIR)); the fourth is a new system called the Nuclear Safety Reporting System (NSRS). Data treatment involves evaluating raw field data and data from other sources (e.g., training simulator, expert judgment, and performance modeling), and preparing them for entry into the data bank. Data structuring involves storage of data by equipment characteristics and human actions at the system, component, and individual control/display levels. Data retrieval uses a set of matrices based on the data-structuring taxonomy.

  16. Systems Analysis Programs for Hands-on Integrated Reliability Evaluations (SAPHIRE) Tutorial

    SciTech Connect (OSTI)

    C. L. Smith; S. T. Beck; S. T. Wood

    2008-08-01T23:59:59.000Z

    The Systems Analysis Programs for Hands-on Integrated Reliability Evaluations (SAPHIRE) refers to a set of computer programs that were developed to create and analyze probabilistic risk assessment (PRAs). This volume is the tutorial manual for the SAPHIRE system. In this document, a series of lessons are provided that guide the user through basic steps common to most analyses preformed with SAPHIRE. The tutorial is divided into two major sections covering both basic and advanced features. The section covering basic topics contains lessons that lead the reader through development of a probabilistic hypothetical problem involving a vehicle accident, highlighting the program’s most fundamental features. The advanced features section contains additional lessons that expand on fundamental analysis features of SAPHIRE and provide insights into more complex analysis techniques. Together, these two elements provide an overview into the operation and capabilities of the SAPHIRE software.

  17. Bridging Human Reliability Analysis and Psychology, Part 2: A Cognitive Framework to Support HRA

    SciTech Connect (OSTI)

    April M. Whaley; Stacey M. L. Hendrickson; Ronald L. Boring; Jing Xing

    2012-06-01T23:59:59.000Z

    This is the second of two papers that discuss the literature review conducted as part of the U.S. Nuclear Regulatory Commission (NRC) effort to develop a hybrid human reliability analysis (HRA) method in response to Staff Requirements Memorandum (SRM) SRM-M061020. This review was conducted with the goal of strengthening the technical basis within psychology, cognitive science and human factors for the hybrid HRA method being proposed. An overview of the literature review approach and high-level structure is provided in the first paper, whereas this paper presents the results of the review. The psychological literature review encompassed research spanning the entirety of human cognition and performance, and consequently produced an extensive list of psychological processes, mechanisms, and factors that contribute to human performance. To make sense of this large amount of information, the results of the literature review were organized into a cognitive framework that identifies causes of failure of macrocognition in humans, and connects those proximate causes to psychological mechanisms and performance influencing factors (PIFs) that can lead to the failure. This cognitive framework can serve as a tool to inform HRA. Beyond this, however, the cognitive framework has the potential to also support addressing human performance issues identified in Human Factors applications.

  18. Multidisciplinary framework for human reliability analysis with an application to errors of commission and dependencies

    SciTech Connect (OSTI)

    Barriere, M.T.; Luckas, W.J. [Brookhaven National Lab., Upton, NY (United States); Wreathall, J. [Wreathall (John) and Co., Dublin, OH (United States); Cooper, S.E. [Science Applications International Corp., Reston, VA (United States); Bley, D.C. [PLG, Inc., Newport Beach, CA (United States); Ramey-Smith, A. [Nuclear Regulatory Commission, Washington, DC (United States). Div. of Systems Technology

    1995-08-01T23:59:59.000Z

    Since the early 1970s, human reliability analysis (HRA) has been considered to be an integral part of probabilistic risk assessments (PRAs). Nuclear power plant (NPP) events, from Three Mile Island through the mid-1980s, showed the importance of human performance to NPP risk. Recent events demonstrate that human performance continues to be a dominant source of risk. In light of these observations, the current limitations of existing HRA approaches become apparent when the role of humans is examined explicitly in the context of real NPP events. The development of new or improved HRA methodologies to more realistically represent human performance is recognized by the Nuclear Regulatory Commission (NRC) as a necessary means to increase the utility of PRAS. To accomplish this objective, an Improved HRA Project, sponsored by the NRC`s Office of Nuclear Regulatory Research (RES), was initiated in late February, 1992, at Brookhaven National Laboratory (BNL) to develop an improved method for HRA that more realistically assesses the human contribution to plant risk and can be fully integrated with PRA. This report describes the research efforts including the development of a multidisciplinary HRA framework, the characterization and representation of errors of commission, and an approach for addressing human dependencies. The implications of the research and necessary requirements for further development also are discussed.

  19. New International Program to Asses the Reliability of Emerging Nondestructive Techniques (PARENT)

    SciTech Connect (OSTI)

    Prokofiev, Iouri; Cumblidge, Stephen E.; Csontos, Aladar A.; Braatz, Brett G.; Doctor, Steven R.

    2013-01-25T23:59:59.000Z

    The Nuclear Regulatory Commission (NRC) established the Program to Assess the Reliability of Emerging Nondestructive Techniques (PARENT) to follow on from the successful Program for the Inspection of Nickel alloy Components (PINC). The goal of the PARENT is to conduct a confirmatory assessment of the reliability of nondestructive evaluation (NDE) techniques for detecting and sizing primary water stress corrosion cracks (PWSCC) and applying the lessons learned from PINC to a series of round-robin tests. These open and blind round-robin tests will comprise a new set of typical pressure boundary components including dissimilar metal welds (DMWs) and bottom-mounted instrumentation penetrations. Open round-robin tests will engage research and industry teams worldwide to investigate and demonstrate the reliability of emerging NDE techniques to detect and size flaws with a wide range of lengths, depths, orientations, and locations. Blind round-robin tests will utilize various testing organizations, whose inspectors and procedures are certified by the standards for the nuclear industry in their respective countries, to investigate the ability of established NDE techniques to detect and size flaws whose characteristics range from relatively easy to very difficult for detection and sizing. Blind and open round-robin testing started in late 2011 and early 2012, respectively. This paper will present the work scope with reports on progress, NDE methods evaluated, and project timeline for PARENT.

  20. Self-Reliability and Motivation in a Nuclear Security Culture Enhancement Program

    SciTech Connect (OSTI)

    Rogers,E.; deBoer,G.; Crawford, C.; De Castro, K.; Landers, J.

    2009-10-19T23:59:59.000Z

    The threat of nuclear terrorism has become a global concern. Many countries continue to make efforts to strengthen nuclear security by enhancing systems of nuclear material protection, control, and accounting (MPC&A). Though MPC&A systems can significantly upgrade nuclear security, they do not eliminate the "human factor." Gen. Eugene Habiger, a former "Assistant Secretary for Safeguards and Security" at the U.S. Department of Energy’s (DOE) nuclear-weapons complex and a former commander of U.S. strategic nuclear forces, has observed that "good security is 20% equipment and 80% people." Although eliminating the "human factor" is not possible, accounting for and mitigating the risk of the insider threat is an essential element in establishing an effective nuclear security culture. This paper will consider the organizational role in mitigating the risk associated with the malicious insider through monitoring and enhancing human reliability and motivation as well as enhancing the nuclear security culture.

  1. Self-Reliability and Motivation in a Nuclear Security Culture Enhancement Program

    SciTech Connect (OSTI)

    Crawford, Cary E.; de Boer, Gloria; De Castro, Kara; Landers, John; Rogers, Erin

    2010-10-01T23:59:59.000Z

    The threat of nuclear terrorism has become a global concern. Many countries continue to make efforts to strengthen nuclear security by enhancing systems of nuclear material protection, control, and accounting (MPC&A). Though MPC&A systems can significantly upgrade nuclear security, they do not eliminate the “human factor.” Gen. Eugene Habiger, a former “Assistant Secretary for Safeguards and Security” at the U.S. Department of Energy’s (DOE) nuclear-weapons complex and a former commander of U.S. strategic nuclear forces, has observed that “good security is 20% equipment and 80% people.”1 Although eliminating the “human factor” is not possible, accounting for and mitigating the risk of the insider threat is an essential element in establishing an effective nuclear security culture. This paper will consider the organizational role in mitigating the risk associated with the malicious insider through monitoring and enhancing human reliability and motivation as well as enhancing the nuclear security culture.

  2. How Many Performance Shaping Factors are Necessary for Human Reliability Analysis?

    SciTech Connect (OSTI)

    Ronald L. Boring

    2010-06-01T23:59:59.000Z

    It has been argued that human reliability analysis (HRA) has expended considerable energy on creating detailed representations of human performance through an increasingly long list of performance shaping factors (PSFs). It is not clear, however, to what extent this refinement and expansion of PSFs has enhanced the quality of HRA. Indeed, there is considerable range in the number of PSFs provided by individual HRA methods, ranging from single factor models such as time-reliability curves, up to 50 or more PSFs in some current HRA models. The US Nuclear Regulatory Commission advocates 15 PSFs in its HRA Good Practices (NUREG-1792), while its SPAR-H method (NUREG/CR-6883) espouses the use of eight PSFs and its ATHEANA method (NUREG-1624) features an open-ended number of PSFs. The apparent differences in the optimal number of PSFs can be explained in terms of the diverse functions of PSFs in HRA. The purpose of this paper is to explore the role of PSFs across different stages of HRA, including identification of potential human errors, modeling of these errors into an overall probabilistic risk assessment, quantifying errors, and preventing errors.

  3. Systems Analysis Programs for Hands-on Integrated Reliability Evaluations (SAPHIRE) Quality Assurance Manual

    SciTech Connect (OSTI)

    C. L. Smith; R. Nims; K. J. Kvarfordt; C. Wharton

    2008-08-01T23:59:59.000Z

    The Systems Analysis Programs for Hands-on Integrated Reliability Evaluations (SAPHIRE) is a software application developed for performing a complete probabilistic risk assessment using a personal computer running the Microsoft Windows operating system. SAPHIRE is primarily funded by the U.S. Nuclear Regulatory Commission (NRC). The role of the INL in this project is that of software developer and tester. This development takes place using formal software development procedures and is subject to quality assurance (QA) processes. The purpose of this document is to describe how the SAPHIRE software QA is performed for Version 6 and 7, what constitutes its parts, and limitations of those processes.

  4. Human factors engineering program review model

    SciTech Connect (OSTI)

    Not Available

    1994-07-01T23:59:59.000Z

    The staff of the Nuclear Regulatory Commission is performing nuclear power plant design certification reviews based on a design process plan that describes the human factors engineering (HFE) program elements that are necessary and sufficient to develop an acceptable detailed design specification and an acceptable implemented design. There are two principal reasons for this approach. First, the initial design certification applications submitted for staff review did not include detailed design information. Second, since human performance literature and industry experiences have shown that many significant human factors issues arise early in the design process, review of the design process activities and results is important to the evaluation of an overall design. However, current regulations and guidance documents do not address the criteria for design process review. Therefore, the HFE Program Review Model (HFE PRM) was developed as a basis for performing design certification reviews that include design process evaluations as well as review of the final design. A central tenet of the HFE PRM is that the HFE aspects of the plant should be developed, designed, and evaluated on the basis of a structured top-down system analysis using accepted HFE principles. The HFE PRM consists of ten component elements. Each element in divided into four sections: Background, Objective, Applicant Submittals, and Review Criteria. This report describes the development of the HFE PRM and gives a detailed description of each HFE review element.

  5. Systems Analysis Programs for Hands-on Integrated Reliability Evaluations (SAPHIRE) GEM Manual

    SciTech Connect (OSTI)

    C. L. Smith; J. Schroeder; S. T. Beck

    2008-08-01T23:59:59.000Z

    The Systems Analysis Programs for Hands-on Integrated Reliability Evaluations (SAPHIRE) is a software application developed for performing a complete probabilistic risk assessment (PRA) using a personal computer running the Microsoft Windows? operating system. SAPHIRE is primarily funded by the U.S. Nuclear Regulatory Commission (NRC) and developed by the Idaho National Laboratory (INL). The INL's primary role in this project is that of software developer and tester. Using the SAPHIRE analysis engine and relational database is a complementary program called GEM. GEM has been designed to simplify using existing PRA analysis for activities such as the NRC’s Accident Sequence Precursor program. In this report, the theoretical framework behind GEM-type calculations are discussed in addition to providing guidance and examples for performing evaluations when using the GEM software. As part of this analysis framework, the two types of GEM analysis are outlined, specifically initiating event (where an initiator occurs) and condition (where a component is failed for some length of time) assessments.

  6. HUMAN RELIABILITY ANALYSIS FOR COMPUTERIZED PROCEDURES, PART TWO: APPLICABILITY OF CURRENT METHODS

    SciTech Connect (OSTI)

    Ronald L. Boring; David I. Gertman

    2012-10-01T23:59:59.000Z

    Computerized procedures (CPs) are an emerging technology within nuclear power plant control rooms. While CPs have been implemented internationally in advanced control rooms, to date no U.S. nuclear power plant has implemented CPs in its main control room. Yet, CPs are a reality of new plant builds and are an area of considerable interest to existing plants, which see advantages in terms of easier records management by omitting the need for updating hardcopy procedures. The overall intent of this paper is to provide a characterization of human reliability analysis (HRA) issues for computerized procedures. It is beyond the scope of this document to propose a new HRA approach or to recommend specific methods or refinements to those methods. Rather, this paper serves as a review of current HRA as it may be used for the analysis and review of computerized procedures.

  7. CONSIDERATIONS FOR THE TREATMENT OF COMPUTERIZED PROCEDURES IN HUMAN RELIABILITY ANALYSIS

    SciTech Connect (OSTI)

    Ronald L. Boring; David I. Gertman

    2012-07-01T23:59:59.000Z

    Computerized procedures (CPs) are an emerging technology within nuclear power plant control rooms. While CPs have been implemented internationally in advanced control rooms, to date no US nuclear power plant has implemented CPs in its main control room. Yet, CPs are a reality of new plant builds and are an area of considerable interest to existing plants, which see advantages in terms of easier records management by omitting the need for updating hardcopy procedures. The overall intent of this paper is to provide a characterization of human reliability analysis (HRA) issues for computerized procedures. It is beyond the scope of this document to propose a new HRA approach or to recommend specific methods or refinements to those methods. Rather, this paper serves as a review of current HRA as it may be used for the analysis and review of computerized procedures.

  8. Bridging Human Reliability Analysis and Psychology, Part 1: The Psychological Literature Review for the IDHEAS Method

    SciTech Connect (OSTI)

    April M. Whaley; Stacey M. L. Hendrickson; Ronald L. Boring; Jeffrey C. Joe; Katya L. Le Blanc; Jing Xing

    2012-06-01T23:59:59.000Z

    In response to Staff Requirements Memorandum (SRM) SRM-M061020, the U.S. Nuclear Regulatory Commission (NRC) is sponsoring work to update the technical basis underlying human reliability analysis (HRA) in an effort to improve the robustness of HRA. The ultimate goal of this work is to develop a hybrid of existing methods addressing limitations of current HRA models and in particular issues related to intra- and inter-method variabilities and results. This hybrid method is now known as the Integrated Decision-tree Human Event Analysis System (IDHEAS). Existing HRA methods have looked at elements of the psychological literature, but there has not previously been a systematic attempt to translate the complete span of cognition from perception to action into mechanisms that can inform HRA. Therefore, a first step of this effort was to perform a literature search of psychology, cognition, behavioral science, teamwork, and operating performance to incorporate current understanding of human performance in operating environments, thus affording an improved technical foundation for HRA. However, this literature review went one step further by mining the literature findings to establish causal relationships and explicit links between the different types of human failures, performance drivers and associated performance measures ultimately used for quantification. This is the first of two papers that detail the literature review (paper 1) and its product (paper 2). This paper describes the literature review and the high-level architecture used to organize the literature review, and the second paper (Whaley, Hendrickson, Boring, & Xing, these proceedings) describes the resultant cognitive framework.

  9. A Mid-Layer Model for Human Reliability Analysis: Understanding the Cognitive Causes of Human Failure Events

    SciTech Connect (OSTI)

    Stacey M. L. Hendrickson; April M. Whaley; Ronald L. Boring; James Y. H. Chang; Song-Hua Shen; Ali Mosleh; Johanna H. Oxstrand; John A. Forester; Dana L. Kelly; Erasmia L. Lois

    2010-06-01T23:59:59.000Z

    The Office of Nuclear Regulatory Research (RES) is sponsoring work in response to a Staff Requirements Memorandum (SRM) directing an effort to establish a single human reliability analysis (HRA) method for the agency or guidance for the use of multiple methods. As part of this effort an attempt to develop a comprehensive HRA qualitative approach is being pursued. This paper presents a draft of the method’s middle layer, a part of the qualitative analysis phase that links failure mechanisms to performance shaping factors. Starting with a Crew Response Tree (CRT) that has identified human failure events, analysts identify potential failure mechanisms using the mid-layer model. The mid-layer model presented in this paper traces the identification of the failure mechanisms using the Information-Diagnosis/Decision-Action (IDA) model and cognitive models from the psychological literature. Each failure mechanism is grouped according to a phase of IDA. Under each phase of IDA, the cognitive models help identify the relevant performance shaping factors for the failure mechanism. The use of IDA and cognitive models can be traced through fault trees, which provide a detailed complement to the CRT.

  10. A mid-layer model for human reliability analysis : understanding the cognitive causes of human failure events.

    SciTech Connect (OSTI)

    Shen, Song-Hua (US Nuclear Regulatory Commission, Washington, DC); Chang, James Y. H. (US Nuclear Regulatory Commission, Washington, DC); Boring,Ronald L. (Idaho National Laboratory, Idaho Falls, ID); Whaley, April M. (Idaho National Laboratory, Idaho Falls, ID); Lois, Erasmia (US Nuclear Regulatory Commission, Washington, DC); Hendrickson, Stacey M. Langfitt; Oxstrand, Johanna H. (Vattenfall Ringhals AB, Varobacka, Sweden); Forester, John Alan; Kelly, Dana L. (Idaho National Laboratory, Idaho Falls, ID); Mosleh, Ali (University of Maryland, College Park, MD)

    2010-03-01T23:59:59.000Z

    The Office of Nuclear Regulatory Research (RES) at the US Nuclear Regulatory Commission (USNRC) is sponsoring work in response to a Staff Requirements Memorandum (SRM) directing an effort to establish a single human reliability analysis (HRA) method for the agency or guidance for the use of multiple methods. As part of this effort an attempt to develop a comprehensive HRA qualitative approach is being pursued. This paper presents a draft of the method's middle layer, a part of the qualitative analysis phase that links failure mechanisms to performance shaping factors. Starting with a Crew Response Tree (CRT) that has identified human failure events, analysts identify potential failure mechanisms using the mid-layer model. The mid-layer model presented in this paper traces the identification of the failure mechanisms using the Information-Diagnosis/Decision-Action (IDA) model and cognitive models from the psychological literature. Each failure mechanism is grouped according to a phase of IDA. Under each phase of IDA, the cognitive models help identify the relevant performance shaping factors for the failure mechanism. The use of IDA and cognitive models can be traced through fault trees, which provide a detailed complement to the CRT.

  11. Lessons Learned on Benchmarking from the International Human Reliability Analysis Empirical Study

    SciTech Connect (OSTI)

    Ronald L. Boring; John A. Forester; Andreas Bye; Vinh N. Dang; Erasmia Lois

    2010-06-01T23:59:59.000Z

    The International Human Reliability Analysis (HRA) Empirical Study is a comparative benchmark of the prediction of HRA methods to the performance of nuclear power plant crews in a control room simulator. There are a number of unique aspects to the present study that distinguish it from previous HRA benchmarks, most notably the emphasis on a method-to-data comparison instead of a method-to-method comparison. This paper reviews seven lessons learned about HRA benchmarking from conducting the study: (1) the dual purposes of the study afforded by joining another HRA study; (2) the importance of comparing not only quantitative but also qualitative aspects of HRA; (3) consideration of both negative and positive drivers on crew performance; (4) a relatively large sample size of crews; (5) the use of multiple methods and scenarios to provide a well-rounded view of HRA performance; (6) the importance of clearly defined human failure events; and (7) the use of a common comparison language to “translate” the results of different HRA methods. These seven lessons learned highlight how the present study can serve as a useful template for future benchmarking studies.

  12. Modeling and Quantification of Team Performance in Human Reliability Analysis for Probabilistic Risk Assessment

    SciTech Connect (OSTI)

    Jeffrey C. JOe; Ronald L. Boring

    2014-06-01T23:59:59.000Z

    Probabilistic Risk Assessment (PRA) and Human Reliability Assessment (HRA) are important technical contributors to the United States (U.S.) Nuclear Regulatory Commission’s (NRC) risk-informed and performance based approach to regulating U.S. commercial nuclear activities. Furthermore, all currently operating commercial NPPs in the U.S. are required by federal regulation to be staffed with crews of operators. Yet, aspects of team performance are underspecified in most HRA methods that are widely used in the nuclear industry. There are a variety of "emergent" team cognition and teamwork errors (e.g., communication errors) that are 1) distinct from individual human errors, and 2) important to understand from a PRA perspective. The lack of robust models or quantification of team performance is an issue that affects the accuracy and validity of HRA methods and models, leading to significant uncertainty in estimating HEPs. This paper describes research that has the objective to model and quantify team dynamics and teamwork within NPP control room crews for risk informed applications, thereby improving the technical basis of HRA, which improves the risk-informed approach the NRC uses to regulate the U.S. commercial nuclear industry.

  13. Microworlds, Simulators, and Simulation: Framework for a Benchmark of Human Reliability Data Sources

    SciTech Connect (OSTI)

    Ronald Boring; Dana Kelly; Carol Smidts; Ali Mosleh; Brian Dyre

    2012-06-01T23:59:59.000Z

    In this paper, we propose a method to improve the data basis of human reliability analysis (HRA) by extending the data sources used to inform HRA methods. Currently, most HRA methods are based on limited empirical data, and efforts to enhance the empirical basis behind HRA methods have not yet yielded significant new data. Part of the reason behind this shortage of quality data is attributable to the data sources used. Data have been derived from unrelated industries, from infrequent risk-significant events, or from costly control room simulator studies. We propose a benchmark of four data sources: a simplified microworld simulator using unskilled student operators, a full-scope control room simulator using skilled student operators, a full-scope control room simulator using licensed commercial operators, and a human performance modeling and simulation system using virtual operators. The goal of this research is to compare findings across the data sources to determine to what extent data may be used and generalized from cost effective sources.

  14. APIC'95, El Paso, Extended Abstracts, A Supplement to the international journal of Reliable Computing 1 Functional Programming and Interval

    E-Print Network [OSTI]

    Kreinovich, Vladik

    increases. Nowadays, software already controls nuclear plants, weapons, etc. Human lives, and even to guarantee reliability is to test a pro­ gram for all possible cases. Usually, there are many possible inputs, so testing all of them is always dif­ ficult, and most of the time practically impossible. If we test

  15. High-reliability gas-turbine combined-cycle development program: Phase II, Volume 3. Final report

    SciTech Connect (OSTI)

    Hecht, K.G.; Sanderson, R.A.; Smith, M.J.

    1982-01-01T23:59:59.000Z

    This three-volume report presents the results of Phase II of the multiphase EPRI-sponsored High-Reliability Gas Turbine Combined-Cycle Development Program whose goal is to achieve a highly reliable gas turbine combined-cycle power plant, available by the mid-1980s, which would be an economically attractive baseload generation alternative for the electric utility industry. The Phase II program objective was to prepare the preliminary design of this power plant. The power plant was addressed in three areas: (1) the gas turbine, (2) the gas turbine ancillaries, and (3) the balance of plant including the steam turbine generator. To achieve the program goals, a gas turbine was incorporated which combined proven reliability characteristics with improved performance features. This gas turbine, designated the V84.3, is the result of a cooperative effort between Kraftwerk Union AG and United Technologies Corporation. Gas turbines of similar design operating in Europe under baseload conditions have demonstrated mean time between failures in excess of 40,000. The reliability characteristics of the gas turbine ancillaries and balance-of-plant equipment were improved through system simplification and component redundancy and by selection of component with inherent high reliability. A digital control system was included with logic, communications, sensor redundancy, and manual backup. An independent condition monitoring and diagnostic system was also included. Program results provide the preliminary design of a gas turbine combined-cycle baseload power plant. This power plant has a predicted mean time between failure of nearly twice the 3000-h EPRI goal. The cost of added reliability features is offset by improved performance, which results in a comparable specific cost and an 8% lower cost of electricty compared to present market offerings.

  16. DOE Human Genome Program contractor-grantee workshop

    SciTech Connect (OSTI)

    NONE

    1996-01-01T23:59:59.000Z

    This volume contains the proceedings for the DOE Human Genome Program`s Contractor-Grantee Workshop V held in Sante Fe, New Mexico January 28, February 1, 1996. Presentations were divided into sessions entitled Sequencing; Mapping; Informatics; Ethical, Legal, and Social Issues; and Infrastructure. Reports of individual projects described herein are separately indexed and abstracted for the database.

  17. Human genome program report. Part 1, overview and progress

    SciTech Connect (OSTI)

    NONE

    1997-11-01T23:59:59.000Z

    This report contains Part 1 of a two-part report to reflect research and progress in the U.S. Department of Energy Human Genome Program from 1994 through 1996, with specified updates made just before publication. Part 1 consists of the program overview and report on progress.

  18. Human Capital Accountability Program--Withdrawn

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2012-11-15T23:59:59.000Z

    Withdrawn 3-26-14. The purpose of maintaining and updating this directive is to (1) Ensure compliance with applicable laws, regulations, and other directives. (2) Reduce the risk of DOE losing any of its personnel authorities. (3) Incorporate functional accountability to ensure that Human Resource Directors' position descriptions and classifications are appropriate, selections result in quality leadership with skills needed, and performance plans and evaluations are consistent with Department and Administration human resources priorities and audit findings.

  19. Human Factors Engineering Program Review Model (NUREG-0711)Revision 3: Update Methodology and Key Revisions

    SciTech Connect (OSTI)

    OHara J. M.; Higgins, J.; Fleger, S.

    2012-07-22T23:59:59.000Z

    The U.S. Nuclear Regulatory Commission (NRC) reviews the human factors engineering (HFE) programs of applicants for nuclear power plant construction permits, operating licenses, standard design certifications, and combined operating licenses. The purpose of these safety reviews is to help ensure that personnel performance and reliability are appropriately supported. Detailed design review procedures and guidance for the evaluations is provided in three key documents: the Standard Review Plan (NUREG-0800), the HFE Program Review Model (NUREG-0711), and the Human-System Interface Design Review Guidelines (NUREG-0700). These documents were last revised in 2007, 2004 and 2002, respectively. The NRC is committed to the periodic update and improvement of the guidance to ensure that it remains a state-of-the-art design evaluation tool. To this end, the NRC is updating its guidance to stay current with recent research on human performance, advances in HFE methods and tools, and new technology being employed in plant and control room design. NUREG-0711 is the first document to be addressed. We present the methodology used to update NUREG-0711 and summarize the main changes made. Finally, we discuss the current status of the update program and the future plans.

  20. Bringing you a prosperous future where energy is clean, abundant, reliable and affordable Industrial Technologies Program

    E-Print Network [OSTI]

    Beckermann, Christoph

    Industrial Technologies Program U.S. Department of Energy Office of Energy Efficiency and Renewable Energy Technologies Program A Strong Energy Portfolio for a Strong America Energy efficiency and clean, renewable of Energy Efficiency and Renewable Energy invests in a diverse portfolio of energy technologies. For more

  1. Human genome program report. Part 2, 1996 research abstracts

    SciTech Connect (OSTI)

    NONE

    1997-11-01T23:59:59.000Z

    This report contains Part 2 of a two-part report to reflect research and progress in the US Department of Energy Human Genome Program from 1994 through 1996, with specified updates made just before publication. Part 2 consists of 1996 research abstracts. Attention is focused on the following: sequencing; mapping; informatics; ethical, legal, and social issues; infrastructure; and small business innovation research.

  2. 2014 WIND POWER PROGRAM PEER REVIEW-RELIABILITY & A2E

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The Future of BadTHEEnergyReliability and A2e March 24-27, 2014 Wind Energy

  3. Lifetime and Reliability

    Broader source: Energy.gov [DOE]

    A DOE Solid-State Lighting Program technology fact sheet on lifetime, reliability, and failure as related to LED-based products.

  4. Primer on molecular genetics. DOE Human Genome Program

    SciTech Connect (OSTI)

    Not Available

    1992-04-01T23:59:59.000Z

    This report is taken from the April 1992 draft of the DOE Human Genome 1991--1992 Program Report, which is expected to be published in May 1992. The primer is intended to be an introduction to basic principles of molecular genetics pertaining to the genome project. The material contained herein is not final and may be incomplete. Techniques of genetic mapping and DNA sequencing are described.

  5. Introduction to Administrative Programs that Mitigate the Insider Threat

    SciTech Connect (OSTI)

    Gerke, Gretchen K.; Rogers, Erin; Landers, John; DeCastro, Kara

    2012-09-01T23:59:59.000Z

    This presentation begins with the reality of the insider threat, then elaborates on these tools to mitigate the insider threat: Human Reliability Program (HRP); Nuclear Security Culture (NSC) Program; Employee Assistance Program (EAP).

  6. Cognitive environment simulation: An artificial intelligence system for human performance assessment: Cognitive reliability analysis technique: (Technical report, May 1986-June 1987)

    SciTech Connect (OSTI)

    Woods, D.D.; Roth, E.M.

    1987-11-01T23:59:59.000Z

    This report documents the results of Phase II of a three phase research program to develop and validate improved methods to model the cognitive behavior of nuclear power plant (NPP) personnel. In Phase II a dynamic simulation capability for modeling how people form intentions to act in NPP emergency situations was developed based on techniques from artificial intelligence. This modeling tool, Cognitive Environment Simulation or CES, simulates the cognitive processes that determine situation assessment and intention formation. It can be used to investigate analytically what situations and factors lead to intention failures, what actions follow from intention failures (e.g., errors of omission, errors of commission, common mode errors), the ability to recover from errors or additional machine failures, and the effects of changes in the NPP person-machine system. The Cognitive Reliability Assessment Technique (or CREATE) was also developed in Phase II to specify how CES can be used to enhance the measurement of the human contribution to risk in probabilistic risk assessment (PRA) studies. 34 refs., 7 figs., 1 tab.

  7. A case study review of technical and technology issues for transition of a utility load management program to provide system reliability resources in restructured electricity markets

    SciTech Connect (OSTI)

    Weller, G.H.

    2001-07-15T23:59:59.000Z

    Utility load management programs--including direct load control and interruptible load programs--were employed by utilities in the past as system reliability resources. With electricity industry restructuring, the context for these programs has changed; the market that was once controlled by vertically integrated utilities has become competitive, raising the question: can existing load management programs be modified so that they can effectively participate in competitive energy markets? In the short run, modified and/or improved operation of load management programs may be the most effective form of demand-side response available to the electricity system today. However, in light of recent technological advances in metering, communication, and load control, utility load management programs must be carefully reviewed in order to determine appropriate investments to support this transition. This report investigates the feasibility of and options for modifying an existing utility load management system so that it might provide reliability services (i.e. ancillary services) in the competitive markets that have resulted from electricity industry restructuring. The report is a case study of Southern California Edison's (SCE) load management programs. SCE was chosen because it operates one of the largest load management programs in the country and it operates them within a competitive wholesale electricity market. The report describes a wide range of existing and soon-to-be-available communication, control, and metering technologies that could be used to facilitate the evolution of SCE's load management programs and systems to provision of reliability services. The fundamental finding of this report is that, with modifications, SCE's load management infrastructure could be transitioned to provide critical ancillary services in competitive electricity markets, employing currently or soon-to-be available load control technologies.

  8. Nuclear Computerized Library for Assessing Reactor Reliability (NUCLARR): Data manual. Part 2: Human error probability (HEP) data; Volume 5, Revision 4

    SciTech Connect (OSTI)

    Reece, W.J.; Gilbert, B.G.; Richards, R.E. [EG and G Idaho, Inc., Idaho Falls, ID (United States)

    1994-09-01T23:59:59.000Z

    This data manual contains a hard copy of the information in the Nuclear Computerized Library for Assessing Reactor Reliability (NUCLARR) Version 3.5 database, which is sponsored by the US Nuclear Regulatory Commission. NUCLARR was designed as a tool for risk analysis. Many of the nuclear reactors in the US and several outside the US are represented in the NUCLARR database. NUCLARR includes both human error probability estimates for workers at the plants and hardware failure data for nuclear reactor equipment. Aggregations of these data yield valuable reliability estimates for probabilistic risk assessments and human reliability analyses. The data manual is organized to permit manual searches of the information if the computerized version is not available. Originally, the manual was published in three parts. In this revision the introductory material located in the original Part 1 has been incorporated into the text of Parts 2 and 3. The user can now find introductory material either in the original Part 1, or in Parts 2 and 3 as revised. Part 2 contains the human error probability data, and Part 3, the hardware component reliability data.

  9. Dispatcher Reliability Analysis : SPICA-RAIL Experiments

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    consider that humans are fully reliable. But experience shows that many accidents involve human failuresDispatcher Reliability Analysis : SPICA-RAIL Experiments Fabien Belmonte, Jean-Louis Boulanger of scenarios and evaluate the behaviour of human operators. A state of the art in human reliability is pre

  10. Office of Electricity Delivery and Energy Reliability Recovery...

    Energy Savers [EERE]

    Electricity Delivery and Energy Reliability Recovery Program Plan Office of Electricity Delivery and Energy Reliability Recovery Program Plan Microsoft Word - OE PSRP June 5 2009...

  11. DOE human genome program contractor-grantee workshop VI

    SciTech Connect (OSTI)

    NONE

    1997-10-01T23:59:59.000Z

    Research is presented from the workshop on the Human Genome Project. Topics include sequencing, genetic mapping, informatics, ethical and legal issues, and infrastructure.

  12. A reliability and maintainability study of selected solar energy system components in the Solar in Federal Buildings Program: Final subcontract report

    SciTech Connect (OSTI)

    Logee, T.L.; Pakkala, P.A.; Pollock, E.O.; Raymond, M.G.

    1986-11-01T23:59:59.000Z

    The eight Solar in Federal Buildings Program (SFBP) solar energy systems described in this report were instrumented for automated data monitoring for system reliability and performance. Solar system pumps and solar system controllers were monitored for 3 to 9 months to provide data on failures, duty cycle, and system control setpoints. There was one pump failure, which was not enough to provide failure statistics. Controller failure rates were very high; 50% failed during the monitoring program. Controller drift was not as easily determined. The other most failure-prone component was the automatic flow control valves, 20% of which failed during the monitoring period. Only 0.7% of the collector panels were damaged by wind and freezing. The F-CHART model was used to predict failure-free performance; actual performance was compared to F-CHART predictions. It was concluded that failures that are corrected quickly have no significant effect on long-term performance.

  13. Graduate Program on Human Security The University of Tokyo

    E-Print Network [OSTI]

    Kawato, Suguru

    in freedom and dignity, free from poverty and despair. We reconize that all individuals, in particular Landmines Degradation Small Arms Empowerment Infectious Diseases Human Trafficking Poverty 9 #12; 10 Conflicts, Refugees Landmines, Terrorism Peace Poverty, Infectious Diseases Environmental Degradation

  14. REFERENCES 5 [1] L. Chen and A. Avizienis. NVersion programming: A faulttolerance approach to reliability of soft

    E-Print Network [OSTI]

    ­oriented Programming : An Evolutionary Approach. Addison­Wesley, 1986. [4] B. Daniels, editor. Achieving Safety scale software systems. In Conference on Software Maintenance­1985, pages 50--58. IEEE Computer Society Computer Society Workshop Series, pages 191--204, Cambridge, UK, July 1989. Cambridge Univ. Pr. [14] A

  15. COLLEGE OF ARTS AND SCIENCES ARTS AND HUMANITIES GRANT PROGRAMS

    E-Print Network [OSTI]

    Barrash, Warren

    Budget ____ Budget Justification ____ Documentation for Project Completion Grants Applicant's Signature). #12;College of Arts and Sciences Arts and Humanities Grant Support for FY 15 AHI Partner Grants will be distributed after July 1, 2014; all funds should be spent by June 30, 2015. · Grant progress reports are due

  16. Program Development

    SciTech Connect (OSTI)

    Atencio, Julian J.

    2014-05-01T23:59:59.000Z

    This presentation covers how to go about developing a human reliability program. In particular, it touches on conceptual thinking, raising awareness in an organization, the actions that go into developing a plan. It emphasizes evaluating all positions, eliminating positions from the pool due to mitigating factors, and keeping the process transparent. It lists components of the process and objectives in process development. It also touches on the role of leadership and the necessity for audit.

  17. Interim reliability evaluation program: analysis of the Arkansas Nuclear One. Unit 1 nuclear power plant. Volume 2 of 2

    SciTech Connect (OSTI)

    Kolb, G.J.

    1982-06-01T23:59:59.000Z

    Appendices are presented concerning systemic event tree analysis; analysis of the ANO-1 front-line and support systems; high pressure injection/high pressure recirculation system; low pressure injection/low pressure recirculation system; core flood system; reactor building spray system; emergency feedwater system; reactor building cooling system; reactor protection system; power conversion system; engineered safeguards activation system; service water system; class 1E AC power system; 125 volt DC system; battery and switchgear emergency cooling system; emergency feedwater initiation and control system; human interface system; sequence quantification; and supporting calculations.

  18. Human Services in a Market Economy: Implications of Program Fee Reliance among Nonprofit Human Service Organizations

    E-Print Network [OSTI]

    Howard, David Benjamin

    2013-01-01T23:59:59.000Z

    profits for lucrative service contracts. Multiple economicin new purchase-of-service contract (POSC) relationshipsor the fact that service contracts tend to be very program

  19. Human Genome Program Image Gallery (from genomics.energy.gov)

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    This collection contains approximately 240 images from the genome programs of DOE's Office of Science. The images are divided into galleries related to biofuels research, systems biology, and basic genomics. Each image has a title, a basic citation, and a credit or source. Most of the images are original graphics created by the Genome Management Information System (GMIS). GMIS images are recognizable by their credit line. Permission to use these graphics is not needed, but please credit the U.S. Department of Energy Genome Programs and provide the website http://genomics.energy.gov. Other images were provided by third parties and not created by the U.S. Department of Energy. Users must contact the person listed in the credit line before using those images. The high-resolution images can be downloaded.

  20. North American Electric Reliability Corporation (NERC): Reliability...

    Office of Environmental Management (EM)

    (NERC): Reliability Considerations from the Integration of Smart Grid North American Electric Reliability Corporation (NERC): Reliability Considerations from the Integration of...

  1. Electricity Reliability

    E-Print Network [OSTI]

    electric power equipment with more energy efficiency and higher capacity than today's systems of modernizing the electric grid to meet the nations's need for reliable, electric power, enhancing security continues to increase within the electricity infrastructure. DOE is conducting research, development

  2. Human Services in a Market Economy: Implications of Program Fee Reliance among Nonprofit Human Service Organizations

    E-Print Network [OSTI]

    Howard, David Benjamin

    2013-01-01T23:59:59.000Z

    and substance abuse treatment, child care, and numerousabuse treatment, job training and workforce development services, child care,abuse treatment, inpatient and outpatient). F01 General/Other F02 Mental Disorders programs F03 Mental Health Care

  3. Sandia National Laboratories: PV Systems Reliability

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

    fluid phenomena of internal inverter components, and their impact on ... Inverter Reliability Program On December 18, 2012, in As scientists and engineers improve the...

  4. Sandia National Laboratories: Materials & Manufacturing Reliability...

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

    Materials & Manufacturing Reliability Program Biofouling Studies on Sandia's Marine Hydrokinetic Coatings Initiated at PNNL's Sequim Bay On June 26, 2014, in Energy, Materials...

  5. Sandia Energy - Human Reliability Assessment

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand RequirementsCoatingsUltra-High-VoltagePower Company's (ORPC's)Nanomaterials

  6. Human Reliability | ornl.gov

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh School football Highdefault SignInstituteDOE Origins

  7. Customer Service Reliability Program Specialist

    Broader source: Energy.gov [DOE]

    This position is located in Transmission Services Planning and Asset Management, in the Customer Service Engineering (TPC) organization. A successful candidate in this position will be a...

  8. Sandia Energy - Inverter Reliability Program

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand RequirementsCoatingsUltra-High-VoltagePower Company'sInAsInternational

  9. Sandia National Laboratories: Physics of Reliability: Evaluating...

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

    Physics of Reliability: Evaluating Design Insights for Component Technologies in Solar program Sandia R&D Funded under New DOE SunShot Program On November 27, 2013, in Energy,...

  10. DOE Human Genome Program report of the second contractor-grantee workshop

    SciTech Connect (OSTI)

    Not Available

    1991-08-01T23:59:59.000Z

    The number of genome-funded projects has increased rapidly, and the Human Genome Initiative has grown into a flourishing program, with a complementary counterpart at the National Institutes of Health. The impact of the Human Genome Project on science and society will be substantial as significant achievements become frequent occurrences. New physical mapping strategies have allowed our national laboratories and university grantees to move ahead in a timely manner, and development of innovative approaches to determining the base sequence of chromosomes is proceeding at an encouraging rate. Our computational capabilities are improving. New networking workstations and methods of inputting and analyzing mapping and sequencing data are being developed to allow investigators easy access to data from major databanks. Investigations are under way into the ethical, legal, and social implications of the use of data generated by this program. Program management needs, such as project coordination and the desire to create an environment in which the program's investigators could interact, formed the basis for this workshop. The 1991 workshop had many stimulating presentations, and numerous collaborative efforts have developed, but we anticipate that its successor, scheduled for the all of 1992, will provide additional concepts, strategies, and technologies that are not yet imagined and that are based on multidisciplinary interactions. This document provides the abstracts of all talks and poster sessions.

  11. Roadmap to a Sustainable Structured Trusted Employee Program

    SciTech Connect (OSTI)

    Coates, Cameron W [ORNL; Eisele, Gerhard R [ORNL

    2013-08-01T23:59:59.000Z

    Organizations (facility, regulatory agency, or country) have a compelling interest in ensuring that individuals who occupy sensitive positions affording access to chemical biological, radiological and nuclear (CBRN) materials facilities and programs are functioning at their highest level of reliability. Human reliability and human performance relate not only to security but also focus on safety. Reliability has a logical and direct relationship to trustworthiness for the organization is placing trust in their employees to conduct themselves in a secure, safe, and dependable manner. This document focuses on providing an organization with a roadmap to implementing a successful and sustainable Structured Trusted Employee Program (STEP).

  12. Software reliability models for critical applications

    SciTech Connect (OSTI)

    Pham, H.; Pham, M.

    1991-12-01T23:59:59.000Z

    This report presents the results of the first phase of the ongoing EG G Idaho, Inc. Software Reliability Research Program. The program is studying the existing software reliability models and proposes a state-of-the-art software reliability model that is relevant to the nuclear reactor control environment. This report consists of three parts: (1) summaries of the literature review of existing software reliability and fault tolerant software reliability models and their related issues, (2) proposed technique for software reliability enhancement, and (3) general discussion and future research. The development of this proposed state-of-the-art software reliability model will be performed in the second place. 407 refs., 4 figs., 2 tabs.

  13. Software reliability models for critical applications

    SciTech Connect (OSTI)

    Pham, H.; Pham, M.

    1991-12-01T23:59:59.000Z

    This report presents the results of the first phase of the ongoing EG&G Idaho, Inc. Software Reliability Research Program. The program is studying the existing software reliability models and proposes a state-of-the-art software reliability model that is relevant to the nuclear reactor control environment. This report consists of three parts: (1) summaries of the literature review of existing software reliability and fault tolerant software reliability models and their related issues, (2) proposed technique for software reliability enhancement, and (3) general discussion and future research. The development of this proposed state-of-the-art software reliability model will be performed in the second place. 407 refs., 4 figs., 2 tabs.

  14. NEW - DOE O 350.1 Chg 5, Contractor Human Resource Management Programs

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    This directive establishes DOE responsibilities and requirements for the management and oversight of contractor Human Resource Management (HR) programs. Chg 1, 5-8-98; Chg 2, 11-22-09; Chg 3, 2-23-10; Chg 4, 4-29-13. DOE O 350.1 Chg 5, dated 9-30-2014, cancels DOE O 350.1 Chg 4. The Order is revised to reflect the cancellation of Chapters 1-3 due to the incorporation of these chapters into DOE Order 350.3; reflect organizational changes; delete reference to the DOE Retrospective Rating Insurance Plan, which is no longer available; remove the CRD from Chapter VII.

  15. The Human Genome Project and Mental Retardation: An Educational Program. Final Progress Report

    SciTech Connect (OSTI)

    Davis, Sharon

    1999-05-03T23:59:59.000Z

    The Arc, a national organization on mental retardation, conducted an educational program for members, many of whom have a family member with a genetic condition causing mental retardation. The project informed members about the Human Genome scientific efforts, conducted training regarding ethical, legal and social implications and involved members in issue discussions. Short reports and fact sheets on genetic and ELSI topics were disseminated to 2,200 of the Arc's leaders across the country and to other interested individuals. Materials produced by the project can e found on the Arc's web site, TheArc.org.

  16. Sandia National Laboratories: increase power system reliability

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

    reliability Sandia, DOE Energy Storage Program, GeneSiC Semiconductor, U.S. Army ARDEC: Ultra-High-Voltage Silicon Carbide Thyristors On March 29, 2013, in Capabilities,...

  17. Reliability-Centered Maintenance

    Broader source: Energy.gov [DOE]

    Reliability-centered maintenance leverages the same practices and technologies of predictive maintenance.

  18. Power as a function of reliability

    SciTech Connect (OSTI)

    Abate, M.L. [Sandia National Labs., Albuquerque, NM (United States); McCabe, G.P.; Lynch, M.P. [Purdue Univ., Lafayette, IN (United States)

    1995-10-01T23:59:59.000Z

    Many studies employ multiple measurement instruments such as human raters, observers, judges, or mechanical gauges to record subject data. It is well known that the consistency of these instruments, commonly called rater reliability, limits the extent to which conclusions should be drawn from the observed data. However, the degree to which rater reliability limits conclusions has traditionally been assessed in only subjective manners. In this paper, a method is developed for objectively quantifying the impact of rate reliability on the statistical analysis of data from a commonly used collection scheme. This method allows the inclusion of a reliability index in statistical power calculations and is an invaluable tool in the planning of experiments.

  19. Notice of Intent to Revise Department of Energy Order 350.1, Contractor Human Resources Management Program

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2012-10-19T23:59:59.000Z

    DOE O 350.1 establishes responsibilities, requirements, and cost allow-ability criteria for the management an oversight of contractor human resource management programs, is being revised to remove contractor requirements from Chapter IV, Compensation, Chapter V, Benefits, and Chapter VI Pensions

  20. This paper describes the Structure-Mapping Engine (SME), a cognitive simulation program for studying human analogical

    E-Print Network [OSTI]

    Forbus, Kenneth D.

    This paper describes the Structure-Mapping Engine (SME), a cognitive simulation program for studying human analogical processing. SME is based on Gentner's Structure-Mapping theory of analogy enhances cognitive simulation studies by simplifying experimentation. Furthermore, SME is very efficient

  1. Power electronics reliability analysis.

    SciTech Connect (OSTI)

    Smith, Mark A.; Atcitty, Stanley

    2009-12-01T23:59:59.000Z

    This report provides the DOE and industry with a general process for analyzing power electronics reliability. The analysis can help with understanding the main causes of failures, downtime, and cost and how to reduce them. One approach is to collect field maintenance data and use it directly to calculate reliability metrics related to each cause. Another approach is to model the functional structure of the equipment using a fault tree to derive system reliability from component reliability. Analysis of a fictitious device demonstrates the latter process. Optimization can use the resulting baseline model to decide how to improve reliability and/or lower costs. It is recommended that both electric utilities and equipment manufacturers make provisions to collect and share data in order to lay the groundwork for improving reliability into the future. Reliability analysis helps guide reliability improvements in hardware and software technology including condition monitoring and prognostics and health management.

  2. Reliability-Centric High-Level Synthesis , N. Mansouri

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    critical applications, poor reliability can be catastrophic in terms of both human and equipment cost1 Reliability-Centric High-Level Synthesis S. Tosun , N. Mansouri , E. Arvas , M. Kandemir-down. As a result, it is becoming necessary to treat reliability as a first-class citizen in system design

  3. The US Support Program to IAEA Safeguards Priority of Training and Human Resources

    SciTech Connect (OSTI)

    Queirolo,A.

    2008-06-13T23:59:59.000Z

    The U.S. Support Program to IAEA Safeguards (USSP) priority of training and human resources is aimed at providing the Department of Safeguards with an appropriate mixture of regular staff and extrabudgetary experts who are qualified to meet the IAEA's technical needs and to provide personnel with appropriate instruction to improve the technical basis and specific skills needed to perform their job functions. The equipment and methods used in inspection activities are unique, complex, and evolving. New and experienced safeguards inspectors need timely and effective training to perform required tasks and to learn new skills prescribed by new safeguards policies or agreements. The role of the inspector has changed from that of strictly an accountant to include that of a detective. New safeguards procedures are being instituted, and therefore, experienced inspectors must be educated on these new procedures. The USSP also recognizes the need for training safeguards support staff, particularly those who maintain and service safeguards equipment (SGTS), and those who perform information collection and analysis (SGIM). The USSP is committed to supporting the IAEA with training to ensure the effectiveness of all staff members and will continue to offer its assistance in the development and delivery of basic, refresher, and advanced training courses. This paper will discuss the USSP ongoing support in the area of training and IAEA staffing.

  4. Reliability of Bonded Interfaces

    Broader source: Energy.gov [DOE]

    2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

  5. Reliability of Electrical Interconnects

    Broader source: Energy.gov [DOE]

    2013 DOE Hydrogen and Fuel Cells Program and Vehicle Technologies Program Annual Merit Review and Peer Evaluation Meeting

  6. U.S. Department Of Energy Advanced Small Modular Reactor R&D Program: Instrumentation, Controls, and Human-Machine Interface (ICHMI) Pathway

    SciTech Connect (OSTI)

    Holcomb, David Eugene [ORNL; Wood, Richard Thomas [ORNL

    2013-01-01T23:59:59.000Z

    Instrumentation, controls, and human-machine interfaces (ICHMI) are essential enabling technologies that strongly influence nuclear power plant performance and operational costs. The nuclear power industry is currently engaged in a transition from traditional analog-based instrumentation, controls, and human-machine interface systems to implementations employing digital technologies. This transition has primarily occurred in an ad hoc fashion through individual system upgrades at existing plants and has been constrained by licenseability concerns. Although the recent progress in constructing new plants has spurred design of more fully digital plant-wide ICHMI systems, the experience base in the nuclear power application domain is limited. Additionally, development of advanced reactor concepts, such as Generation IV designs and small modular reactors, introduces different plant conditions (e.g., higher temperatures, different coolants, etc.) and unique plant configurations (e.g., multiunit plants with shared systems, balance of plant architectures with reconfigurable co-generation options) that increase the need for enhanced ICHMI capabilities to fully achieve industry goals related to economic competitiveness, safety and reliability, sustainability, and proliferation resistance and physical protection. As a result, significant challenges remain to be addressed to enable the nuclear power industry to complete the transition to safe and comprehensive use of modern ICHMI technology. The U.S. Department of Energy (DOE) has recognized that ICHMI research, development, and demonstration (RD&D) is needed to resolve the technical challenges that may compromise the effective and efficient utilization of modern ICHMI technology and consequently inhibit realization of the benefits offered by expanded utilization of nuclear power. Consequently, several DOE programs have substantial ICHMI RD&D elements within their respective research portfolios. This paper describes current ICHMI research in support of advanced small modular reactors. The objectives that can be achieved through execution of the defined RD&D are to provide optimal technical solutions to critical ICHMI issues, resolve technology gaps arising from the unique measurement and control characteristics of advanced reactor concepts, provide demonstration of needed technologies and methodologies in the nuclear power application domain, mature emerging technologies to facilitate commercialization, and establish necessary technical evidence and application experience to enable timely and predictable licensing. 1 Introduction Instrumentation, controls, and human-machine interfaces are essential enabling technologies that strongly influence nuclear power plant performance and operational costs. The nuclear power industry is currently engaged in a transition from traditional analog-based instrumentation, controls, and human-machine interface (ICHMI) systems to implementations employing digital technologies. This transition has primarily occurred in an ad hoc fashion through individual system upgrades at existing plants and has been constrained by licenseability concerns. Although the recent progress in constructing new plants has spurred design of more fully digital plant-wide ICHMI systems, the experience base in the nuclear power application domain is limited. Additionally, development of advanced reactor concepts, such as Generation IV designs and small modular reactors, introduces different plant conditions (e.g., higher temperatures, different coolants, etc.) and unique plant configurations (e.g., multiunit plants with shared systems, balance of plant architectures with reconfigurable co-generation options) that increase the need for enhanced ICHMI capabilities to fully achieve industry goals related to economic competitiveness, safety and reliability, sustainability, and proliferation resistance and physical protection. As a result, significant challenges remain to be addressed to enable the nuclear power industry to complete the transition to safe and comprehensive use of m

  7. Hawaii electric system reliability.

    SciTech Connect (OSTI)

    Silva Monroy, Cesar Augusto; Loose, Verne William

    2012-09-01T23:59:59.000Z

    This report addresses Hawaii electric system reliability issues; greater emphasis is placed on short-term reliability but resource adequacy is reviewed in reference to electric consumers' views of reliability %E2%80%9Cworth%E2%80%9D and the reserve capacity required to deliver that value. The report begins with a description of the Hawaii electric system to the extent permitted by publicly available data. Electrical engineering literature in the area of electric reliability is researched and briefly reviewed. North American Electric Reliability Corporation standards and measures for generation and transmission are reviewed and identified as to their appropriateness for various portions of the electric grid and for application in Hawaii. Analysis of frequency data supplied by the State of Hawaii Public Utilities Commission is presented together with comparison and contrast of performance of each of the systems for two years, 2010 and 2011. Literature tracing the development of reliability economics is reviewed and referenced. A method is explained for integrating system cost with outage cost to determine the optimal resource adequacy given customers' views of the value contributed by reliable electric supply. The report concludes with findings and recommendations for reliability in the State of Hawaii.

  8. Medical Device Reliability BIOMATERIALS

    E-Print Network [OSTI]

    NEMI Medical Electronics team to address short- and long-term reliability issues with medical devices. OurMedical Device Reliability BIOMATERIALS Our goal is to provide medical device manufacturers, and consistency of active implantable medical devices. These devices, including pacemakers, cardiac defibrillators

  9. Photovoltaic system reliability

    SciTech Connect (OSTI)

    Maish, A.B.; Atcitty, C. [Sandia National Labs., NM (United States); Greenberg, D. [Ascension Technology, Inc., Lincoln Center, MA (United States)] [and others

    1997-10-01T23:59:59.000Z

    This paper discusses the reliability of several photovoltaic projects including SMUD`s PV Pioneer project, various projects monitored by Ascension Technology, and the Colorado Parks project. System times-to-failure range from 1 to 16 years, and maintenance costs range from 1 to 16 cents per kilowatt-hour. Factors contributing to the reliability of these systems are discussed, and practices are recommended that can be applied to future projects. This paper also discusses the methodology used to collect and analyze PV system reliability data.

  10. Reliable solar: powering communities

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements Recently ApprovedReliability Technology earns award ReliabilityReliable

  11. NDE reliability and probability of detection (POD) evolution and paradigm shift

    SciTech Connect (OSTI)

    Singh, Surendra [NDE Engineering, Materials and Process Engineering, Honeywell Aerospace, Phoenix, AZ 85034 (United States)

    2014-02-18T23:59:59.000Z

    The subject of NDE Reliability and POD has gone through multiple phases since its humble beginning in the late 1960s. This was followed by several programs including the important one nicknamed “Have Cracks – Will Travel” or in short “Have Cracks” by Lockheed Georgia Company for US Air Force during 1974–1978. This and other studies ultimately led to a series of developments in the field of reliability and POD starting from the introduction of fracture mechanics and Damaged Tolerant Design (DTD) to statistical framework by Bernes and Hovey in 1981 for POD estimation to MIL-STD HDBK 1823 (1999) and 1823A (2009). During the last decade, various groups and researchers have further studied the reliability and POD using Model Assisted POD (MAPOD), Simulation Assisted POD (SAPOD), and applying Bayesian Statistics. All and each of these developments had one objective, i.e., improving accuracy of life prediction in components that to a large extent depends on the reliability and capability of NDE methods. Therefore, it is essential to have a reliable detection and sizing of large flaws in components. Currently, POD is used for studying reliability and capability of NDE methods, though POD data offers no absolute truth regarding NDE reliability, i.e., system capability, effects of flaw morphology, and quantifying the human factors. Furthermore, reliability and POD have been reported alike in meaning but POD is not NDE reliability. POD is a subset of the reliability that consists of six phases: 1) samples selection using DOE, 2) NDE equipment setup and calibration, 3) System Measurement Evaluation (SME) including Gage Repeatability and Reproducibility (Gage R and R) and Analysis Of Variance (ANOVA), 4) NDE system capability and electronic and physical saturation, 5) acquiring and fitting data to a model, and data analysis, and 6) POD estimation. This paper provides an overview of all major POD milestones for the last several decades and discuss rationale for using Integrated Computational Materials Engineering (ICME), MAPOD, SAPOD, and Bayesian statistics for studying controllable and non-controllable variables including human factors for estimating POD. Another objective is to list gaps between “hoped for” versus validated or fielded failed hardware.

  12. Reliability and Safety

    Broader source: Energy.gov [DOE]

    DOE solar reliability and safety research and development (R&D) focuses on testing photovoltaic (PV) modules, inverters, and systems for long-term performance, and helping investors, consumers,...

  13. Reliability Standards Owner

    Broader source: Energy.gov [DOE]

    This position is located in the Internal Operations and Asset Management group of Planning and Asset Management (TP). A successful candidate in this position will serve as the Reliability Standards...

  14. Optical fiber reliability models M. John Matthewson

    E-Print Network [OSTI]

    Matthewson, M. John

    3 Optical fiber reliability models M. John Matthewson Fiber Optic Materials Research Program Systems containing optical fiber have design lives on the order of decades so that models for assessing and promising areas for future work are proposed. 1. INTRODUCTION Mechanical failure of optical fiber must

  15. Gearbox Reliability Collaborative Update (Presentation)

    SciTech Connect (OSTI)

    Sheng, S.

    2013-10-01T23:59:59.000Z

    This presentation was given at the Sandia Reliability Workshop in August 2013 and provides information on current statistics, a status update, next steps, and other reliability research and development activities related to the Gearbox Reliability Collaborative.

  16. Sandia Energy - PV Systems Reliability

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

    Systems Reliability Home Stationary Power Energy Conversion Efficiency Solar Energy Photovoltaics PV Systems Reliability PV Systems ReliabilityCoryne Tasca2015-05-08T03:40:54+00:00...

  17. Sandia National Laboratories: Human Reliability Assessment

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

    (NESL) Brayton Lab SCO2 Brayton Cycle Technology Videos Heat Exchanger Development Diffusion Bonding Characterization Mechanical Testing Deep Borehole Disposal Nuclear...

  18. RELIABLE SOLUTION OF CONVEX QUADRATIC PROGRAMS ...

    E-Print Network [OSTI]

    2011-01-28T23:59:59.000Z

    analysis, VLSI design, discrete-time stabilization, optimal and fuzzy control, finite impluse response design, optimal power flow, economic dispatch, etc. Several ...

  19. Sandia National Laboratories: Inverter Reliability Program

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

    Goal 1: Degradation Study of Components and Subsystems On December 18, 2012, in Thermal Management Subsystem Inverters Capacitors Switches Thermal Management Subsystem Thermal...

  20. Photovoltaic module reliability workshop

    SciTech Connect (OSTI)

    Mrig, L. (ed.)

    1990-01-01T23:59:59.000Z

    The paper and presentations compiled in this volume form the Proceedings of the fourth in a series of Workshops sponsored by Solar Energy Research Institute (SERI/DOE) under the general theme of photovoltaic module reliability during the period 1986--1990. The reliability Photo Voltaic (PV) modules/systems is exceedingly important along with the initial cost and efficiency of modules if the PV technology has to make a major impact in the power generation market, and for it to compete with the conventional electricity producing technologies. The reliability of photovoltaic modules has progressed significantly in the last few years as evidenced by warranties available on commercial modules of as long as 12 years. However, there is still need for substantial research and testing required to improve module field reliability to levels of 30 years or more. Several small groups of researchers are involved in this research, development, and monitoring activity around the world. In the US, PV manufacturers, DOE laboratories, electric utilities and others are engaged in the photovoltaic reliability research and testing. This group of researchers and others interested in this field were brought together under SERI/DOE sponsorship to exchange the technical knowledge and field experience as related to current information in this important field. The papers presented here reflect this effort.

  1. Integration of NDE Reliability and Fracture Mechanics

    SciTech Connect (OSTI)

    Becker, F. L.; Doctor, S. R.; Heas!er, P. G.; Morris, C. J.; Pitman, S. G.; Selby, G. P.; Simonen, F. A.

    1981-03-01T23:59:59.000Z

    The Pacific Northwest Laboratory is conducting a four-phase program for measuring and evaluating the effectiveness and reliability of in-service inspection (lSI} performed on the primary system piping welds of commercial light water reactors (LWRs). Phase I of the program is complete. A survey was made of the state of practice for ultrasonic rsr of LWR primary system piping welds. Fracture mechanics calculations were made to establish required nondestrutive testing sensitivities. In general, it was found that fatigue flaws less than 25% of wall thickness would not grow to failure within an inspection interval of 10 years. However, in some cases failure could occur considerably faster. Statistical methods for predicting and measuring the effectiveness and reliability of lSI were developed and will be applied in the "Round Robin Inspections" of Phase II. Methods were also developed for the production of flaws typical of those found in service. Samples fabricated by these methods wilI be used in Phase II to test inspection effectiveness and reliability. Measurements were made of the influence of flaw characteristics {i.e., roughness, tightness, and orientation) on inspection reliability. These measurernents, as well as the predictions of a statistical model for inspection reliability, indicate that current reporting and recording sensitivities are inadequate.

  2. ISSAT 2012 KCoverage Reliability Evaluation K-COVERAGE RELIABILITY EVALUATION

    E-Print Network [OSTI]

    Xing, Liudong

    #12;7/20/2012 ISSAT 2012 KCoverage Reliability Evaluation forWSNs 2 Introduction Wireless sensor;7/20/2012 ISSAT 2012 KCoverage Reliability Evaluation forWSNs 7 Model 13 Consider a set of sensor nodes (SN7/20/2012 ISSAT 2012 KCoverage Reliability Evaluation forWSNs 1 K-COVERAGE RELIABILITY EVALUATION

  3. Reliability of Electrical Interconnects (Presentation)

    SciTech Connect (OSTI)

    Devoto, D.

    2014-06-01T23:59:59.000Z

    This presentation discusses the status of NREL's research on the reliability of electrical interconnects.

  4. Empirical Bayes Estimation of Reliability

    E-Print Network [OSTI]

    Pensky, Marianna

    types of equipment relies on statistical inference about char- acteristics of reliabilityEmpirical Bayes Estimation of Reliability Introduction Assessment of the reliability of various such as reliability function, mean lifetime of the devices, or failure rate. Gen- eral techniques of statistical

  5. Considerations of human inturison in U.S. programs for deep geologic disposal of radioactive waste.

    SciTech Connect (OSTI)

    Swift, Peter N.

    2013-01-01T23:59:59.000Z

    Regulations in the United States that govern the permanent disposal of spent nuclear fuel and high-level radioactive waste in deep geologic repositories require the explicit consideration of hypothetical future human intrusions that disrupt the waste. Specific regulatory requirements regarding the consideration of human intrusion differ in the two sets of regulations currently in effect in the United States; one defined by the Environmental Protection Agency's 40 Code of Federal Regulations part 197, applied only to the formerly proposed geologic repository at Yucca Mountain, Nevada, and the other defined by the Environmental Protection Agency's 40 Code of Federal Regulations part 191, applied to the Waste Isolation Pilot Plant in New Mexico and potentially applicable to any repository for spent nuclear fuel and high-level radioactive waste in the United States other than the proposed repository at Yucca Mountain. This report reviews the regulatory requirements relevant to human intrusion and the approaches taken by the Department of Energy to demonstrating compliance with those requirements.

  6. Programming

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)IntegratedSpeedingTechnical News,Program Direction and Analysis DeputyStructure

  7. Power electronics reliability.

    SciTech Connect (OSTI)

    Kaplar, Robert James; Brock, Reinhard C.; Marinella, Matthew; King, Michael Patrick; Stanley, James K.; Smith, Mark A.; Atcitty, Stanley

    2010-10-01T23:59:59.000Z

    The project's goals are: (1) use experiments and modeling to investigate and characterize stress-related failure modes of post-silicon power electronic (PE) devices such as silicon carbide (SiC) and gallium nitride (GaN) switches; and (2) seek opportunities for condition monitoring (CM) and prognostics and health management (PHM) to further enhance the reliability of power electronics devices and equipment. CM - detect anomalies and diagnose problems that require maintenance. PHM - track damage growth, predict time to failure, and manage subsequent maintenance and operations in such a way to optimize overall system utility against cost. The benefits of CM/PHM are: (1) operate power conversion systems in ways that will preclude predicted failures; (2) reduce unscheduled downtime and thereby reduce costs; and (3) pioneering reliability in SiC and GaN.

  8. Reliable computation Peter Gacs

    E-Print Network [OSTI]

    Gacs, Peter

    of compressors 28 4.6. Exercises 30 5. The reliable storage problem 32 5.1. Clocked circuits 32 5.2. Storage 34 5.1. Cables 21 4.2. Compressors 23 4.3. Propagating safety 25 4.4. Endgame 26 4.5. The construction.3. Error-correcting codes 35 5.4. Refreshers 39 5.5. Exercises 48 6. Problems 49 7. Historical remarks 51

  9. Physics of Reliability: Evaluating Design Insights for Component Technologies in Solar (PREDICTS) Funding Opportunity

    Broader source: Energy.gov [DOE]

    The Physics of Reliability: Evaluating Design Insights for Component Technologies in Solar (PREDICTS) program supports projects that evaluate the degradation and failure mechanisms of concentrating...

  10. Alaska Native Weatherization Training and Jobs Program First Steps Toward Tribal Weatherization – Human Capacity Development

    SciTech Connect (OSTI)

    Wiita, Joanne

    2013-07-30T23:59:59.000Z

    The Alaska Native Weatherization Training and Jobs Project expanded weatherization services for tribal members’ homes in southeast Alaska while providing weatherization training and on the job training (OJT) for tribal citizens that lead to jobs and most probably careers in weatherization-related occupations. The program resulted in; (a) 80 Alaska Native citizens provided with skills training in five weatherization training units that were delivered in cooperation with University of Alaska Southeast, in accordance with the U.S. Department of Energy Core Competencies for Weatherization Training that prepared participants for employment in three weatherizationrelated occupations: Installer, Crew Chief, and Auditor; (b) 25 paid OJT training opportunities for trainees who successfully completed the training course; and (c) employed trained personnel that have begun to rehab on over 1,000 housing units for weatherization.

  11. Technology Roadmap Instrumentation, Control, and Human-Machine Interface to Support DOE Advanced Nuclear Energy Programs

    SciTech Connect (OSTI)

    Donald D Dudenhoeffer; Burce P Hallbert

    2007-03-01T23:59:59.000Z

    Instrumentation, Controls, and Human-Machine Interface (ICHMI) technologies are essential to ensuring delivery and effective operation of optimized advanced Generation IV (Gen IV) nuclear energy systems. In 1996, the Watts Bar I nuclear power plant in Tennessee was the last U.S. nuclear power plant to go on line. It was, in fact, built based on pre-1990 technology. Since this last U.S. nuclear power plant was designed, there have been major advances in the field of ICHMI systems. Computer technology employed in other industries has advanced dramatically, and computing systems are now replaced every few years as they become functionally obsolete. Functional obsolescence occurs when newer, more functional technology replaces or supersedes an existing technology, even though an existing technology may well be in working order.Although ICHMI architectures are comprised of much of the same technology, they have not been updated nearly as often in the nuclear power industry. For example, some newer Personal Digital Assistants (PDAs) or handheld computers may, in fact, have more functionality than the 1996 computer control system at the Watts Bar I plant. This illustrates the need to transition and upgrade current nuclear power plant ICHMI technologies.

  12. Testing for PV Reliability (Presentation)

    SciTech Connect (OSTI)

    Kurtz, S.; Bansal, S.

    2014-09-01T23:59:59.000Z

    The DOE SUNSHOT workshop is seeking input from the community about PV reliability and how the DOE might address gaps in understanding. This presentation describes the types of testing that are needed for PV reliability and introduces a discussion to identify gaps in our understanding of PV reliability testing.

  13. DOE Human Genome Program: Contractor-Grantee Workshop IV, November 13--17, 1994, Santa Fe, New Mexico

    SciTech Connect (OSTI)

    Not Available

    1994-10-01T23:59:59.000Z

    This volume contains the proceedings of the fourth Contractor-Grantee Workshop for the Department of Energy (DOE) Human Genome Program. Of the 204 abstracts in this book, some 200 describe the genome research of DOE-funded grantees and contractors located at the multidisciplinary centers at Lawrence Berkeley Laboratory, Lawrence Livermore National Laboratory, and Los Alamos National Laboratory; other DOE-supported laboratories; and more than 54 universities, research organizations, and companies in the United States and abroad. Included are 16 abstracts from ongoing projects in the Ethical, Legal, and Social Issues (ELSI) component, an area that continues to attract considerable attention from a wide variety of interested parties. Three abstracts summarize work in the new Microbial Genome Initiative launched this year by the Office of Health and Environmental Research (OHER) to provide genome sequence and mapping data on industrially important microorganisms and those that live under extreme conditions. Many of the projects will be discussed at plenary sessions held throughout the workshop, and all are represented in the poster sessions.

  14. Abstract--This paper reports on work the Consortium for Electric Reliability Technology Solutions (CERTS) has been

    E-Print Network [OSTI]

    of the New York Public Servic Reliability Technology Solutions on behalf of the U.S. Department of Energy's Transmission Reliability program. The work was funded by the Assistant Secretary of Energy Efficiency and Renewable Energy, Office of Power

  15. Mentoring Human Performance - 12480

    SciTech Connect (OSTI)

    Geis, John A.; Haugen, Christian N. [CALIBRE Systems, Inc., Alexandria, Virginia (United States)

    2012-07-01T23:59:59.000Z

    Although the positive effects of implementing a human performance approach to operations can be hard to quantify, many organizations and industry areas are finding tangible benefits to such a program. Recently, a unique mentoring program was established and implemented focusing on improving the performance of managers, supervisors, and work crews, using the principles of Human Performance Improvement (HPI). The goal of this mentoring was to affect behaviors and habits that reliably implement the principles of HPI to ensure continuous improvement in implementation of an Integrated Safety Management System (ISMS) within a Conduct of Operations framework. Mentors engaged with personnel in a one-on-one, or one-on-many dialogue, which focused on what behaviors were observed, what factors underlie the behaviors, and what changes in behavior could prevent errors or events, and improve performance. A senior management sponsor was essential to gain broad management support. A clear charter and management plan describing the goals, objectives, methodology, and expected outcomes was established. Mentors were carefully selected with senior management endorsement. Mentors were assigned to projects and work teams based on the following three criteria: 1) knowledge of the work scope; 2) experience in similar project areas; and 3) perceived level of trust they would have with project management, supervision, and work teams. This program was restructured significantly when the American Reinvestment and Recovery Act (ARRA) and the associated funding came to an end. The program was restructured based on an understanding of the observations, attributed successes and identified shortfalls, and the consolidation of those lessons. Mentoring the application of proven methods for improving human performance was shown effective at increasing success in day-to-day activities and increasing confidence and level of skill of supervisors. While mentoring program effectiveness is difficult to measure, and return on investment is difficult to quantify, especially in complex and large organizations where the ability to directly correlate causal factors can be challenging, the evidence presented by Sydney Dekker, James Reason, and others who study the field of human factors does assert managing and reducing error is possible. Employment of key behaviors-HPI techniques and skills-can be shown to have a significant impact on error rates. Our mentoring program demonstrated reduced error rates and corresponding improvements in safety and production. Improved behaviors are the result, of providing a culture with consistent, clear expectations from leadership, and processes and methods applied consistently to error prevention. Mentoring, as envisioned and executed in this program, was effective in helping shift organizational culture and effectively improving safety and production. (authors)

  16. Sample sizes for confidence limits for reliability.

    SciTech Connect (OSTI)

    Darby, John L.

    2010-02-01T23:59:59.000Z

    We recently performed an evaluation of the implications of a reduced stockpile of nuclear weapons for surveillance to support estimates of reliability. We found that one technique developed at Sandia National Laboratories (SNL) under-estimates the required sample size for systems-level testing. For a large population the discrepancy is not important, but for a small population it is important. We found that another technique used by SNL provides the correct required sample size. For systems-level testing of nuclear weapons, samples are selected without replacement, and the hypergeometric probability distribution applies. Both of the SNL techniques focus on samples without defects from sampling without replacement. We generalized the second SNL technique to cases with defects in the sample. We created a computer program in Mathematica to automate the calculation of confidence for reliability. We also evaluated sampling with replacement where the binomial probability distribution applies.

  17. Continuous Reliability Enhancement for Wind (CREW) database : wind plant reliability benchmark.

    SciTech Connect (OSTI)

    Hines, Valerie Ann-Peters; Ogilvie, Alistair B.; Bond, Cody R.

    2013-09-01T23:59:59.000Z

    To benchmark the current U.S. wind turbine fleet reliability performance and identify the major contributors to component-level failures and other downtime events, the Department of Energy funded the development of the Continuous Reliability Enhancement for Wind (CREW) database by Sandia National Laboratories. This report is the third annual Wind Plant Reliability Benchmark, to publically report on CREW findings for the wind industry. The CREW database uses both high resolution Supervisory Control and Data Acquisition (SCADA) data from operating plants and Strategic Power Systems' ORAPWind%C2%AE (Operational Reliability Analysis Program for Wind) data, which consist of downtime and reserve event records and daily summaries of various time categories for each turbine. Together, these data are used as inputs into CREW's reliability modeling. The results presented here include: the primary CREW Benchmark statistics (operational availability, utilization, capacity factor, mean time between events, and mean downtime); time accounting from an availability perspective; time accounting in terms of the combination of wind speed and generation levels; power curve analysis; and top system and component contributors to unavailability.

  18. Sandia National Laboratories: Inverter Reliability

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

    in Hosted by Sandia National Laboratories and the Electric Power Research Institute (EPRI) Inverter reliability drives project life cycle costs and plant performance. This...

  19. Sandia National Laboratories: Component Reliability

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

    in Hosted by Sandia National Laboratories and the Electric Power Research Institute (EPRI) Inverter reliability drives project life cycle costs and plant performance. This...

  20. Sandia National Laboratories: PV Reliability

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

    Reliability Sandia Research on PV Arc-Fault Detection Submitted for US Patent On March 4, 2015, in Computational Modeling & Simulation, Energy, Facilities, News, News & Events,...

  1. Proposed New Program: Planning New Programs

    E-Print Network [OSTI]

    Machel, Hans

    Proposed New Program: Planning New Programs Planning Program As outlined in the attached document, the Human Geography group is bringing forward a proposal for a new undergraduate program in Planning. The Curriculum Committee has discussed this program both last year, and in our Friday the 13th

  2. RELIABILITY OF CAPACITOR CHARGING UNITS

    E-Print Network [OSTI]

    Sprott, Julien Clinton

    experience little change while those using the electronic cutoff would drift due to ageing components and changing parameters. The first few shots using the electronic cutoff were less reliable than subsequentRELIABILITY OF CAPACITOR CHARGING UNITS Clint Sprott July 30, 1965 University of Wisconsin

  3. Integrating Human Performance and Technology

    SciTech Connect (OSTI)

    Ronald K. Farris; Heather Medema

    2012-05-01T23:59:59.000Z

    Human error is a significant factor in the cause and/or complication of events that occur in the commercial nuclear industry. In recent years, great gains have been made using Human Performance (HU) tools focused on targeting individual behaviors. However, the cost of improving HU is growing and resistance to add yet another HU tool certainly exists, particularly for those tools that increase the paperwork for operations. Improvements in HU that are the result of leveraging existing technology, such as hand-held mobile technologies, have the potential to reduce human error in controlling system configurations, safety tag-outs, and other verifications. Operator rounds, valve line-up verifications, containment closure verifications, safety & equipment protection, and system tagging can be supported by field-deployable wireless technologies. These devices can also support the availability of critical component data in the main control room and other locations. This research pilot project reviewing wireless hand-held technology is part of the Light Water Reactor Sustainability Program (LWRSP), a research and development (R&D) program sponsored by the U. S. Department of Energy (DOE). The project is being performed in close collaboration with industry R&D programs to provide the technical foundations for licensing, and managing the long-term, safe, and economical operation of current nuclear power plants. The LWRSP vision is to develop technologies and other solutions that can improve the reliability, sustain the safety, and extend the life of the current nuclear reactor fleet.

  4. integration division Human Systems

    E-Print Network [OSTI]

    integration division Human Systems Eye-Movement Metrics: Non-Intrusive Quantitative Tools for Monitoring Human Visual Performance Objective Approach Impact A reliable quantitative yet non-intrusive methodologies that provide quantitative yet non-intrusive measures of human visual performance for use

  5. Photovoltaic performance and reliability workshop

    SciTech Connect (OSTI)

    Mrig, L. [ed.

    1993-12-01T23:59:59.000Z

    This workshop was the sixth in a series of workshops sponsored by NREL/DOE under the general subject of photovoltaic testing and reliability during the period 1986--1993. PV performance and PV reliability are at least as important as PV cost, if not more. In the US, PV manufacturers, DOE laboratories, electric utilities, and others are engaged in the photovoltaic reliability research and testing. This group of researchers and others interested in the field were brought together to exchange the technical knowledge and field experience as related to current information in this evolving field of PV reliability. The papers presented here reflect this effort since the last workshop held in September, 1992. The topics covered include: cell and module characterization, module and system testing, durability and reliability, system field experience, and standards and codes.

  6. Building Strong and Vibrant New York Communities Cornell Cooperative Extension provides equal program and employment opportunities, NYS College of Agricultural and Life Sciences, NYS College of Human Ecology, and

    E-Print Network [OSTI]

    Keinan, Alon

    Building Strong and Vibrant New York Communities Cornell Cooperative Extension provides equal program and employment opportunities, NYS College of Agricultural and Life Sciences, NYS College of Human Ecology, and NYS College of Veterinary Medicine at Cornell University, Cooperative Extension associations

  7. Applicative Notions in ML-like Programs 

    E-Print Network [OSTI]

    Ling, Budi H

    Pure functional languages are expressive tools for writing modular and reliable code. State in programming languages is a useful tool for programming dynamic systems. However, their combination yields programming languages that are difficult...

  8. Reliability assessment of autonomous power systems incorporating HVDC interconnection links

    SciTech Connect (OSTI)

    Dialynas, E.N.; Koskolos, N.C. [National Technical Univ., Athens (Greece). Dept. of Electrical and Computer Engineering] [National Technical Univ., Athens (Greece). Dept. of Electrical and Computer Engineering; Agoris, D. [Public Power Corp., Athens (Greece)] [Public Power Corp., Athens (Greece)

    1996-01-01T23:59:59.000Z

    The objective of this paper is to present an improved computational method for the overall reliability assessment of autonomous power systems that may or may not contain HVdc interconnection links. This is a hybrid method based on a Monte-Carlo simulation sequential approach which incorporates an analytical approach for the reliability modeling of the HVdc transmission links. The developed models and techniques have been implemented into a computer program that can be used to simulate the operational practices and characteristics of the overall system under study efficiently and realistically. A set of reliability indices are calculated for each load-point of interest and the entire system while a set of additional indices is calculated for quantifying the reliability performance of the interconnection links under the specified operating requirements. The analysis of a practical system is also included for a number of studies representing its various operating and design characteristics.

  9. OE State and Regional Electricity Policy Assistance Program ...

    Energy Savers [EERE]

    OE State and Regional Electricity Policy Assistance Program OE State and Regional Electricity Policy Assistance Program The Office of Electricity Delivery and Energy Reliability...

  10. Reliability analysis of fatigue sensitive joints in FPSO

    SciTech Connect (OSTI)

    Kaminski, M.L. [Nevesbu, The Hague (Netherlands); Krekel, M. [Bluewater, Hoofddorp (Netherlands)

    1995-12-31T23:59:59.000Z

    This paper contains a general description and the results of a reliability analysis made for fatigue sensitive joints in an FPSO. The main aim of the analysis was to demonstrate that the inspection program, which was specified based on the IMO resolution, will guarantee an acceptable probability level of fatigue and fracture failure during 20 years of service of the unit. Three approaches have been followed: the SN-approach and the fracture mechanics approach with and without allowance for fracture. The planned inspection program has been taken into account in the third approach. The stress assessment has been based on the spectral analysis corrected for the intermittent wetting effect. A short description of the deterministic analyses which preceded the reliability analysis has been included. It has been demonstrated in the paper that the probability of fatigue and fracture failure in an inspected structure can be assessed and judged by use of the reliability analysis.

  11. Photovoltaics performance and reliability workshop

    SciTech Connect (OSTI)

    Mrig, L. (ed.) [ed.

    1992-01-01T23:59:59.000Z

    This document consists of papers and viewgraphs compiled from the proceedings of a workshop held in September 1992. This workshop was the fifth in a series sponsored by NREL/DOE under the general subject areas of photovoltaic module testing and reliability. PV manufacturers, DOE laboratories, electric utilities and others exchanged technical knowledge and field experience. The topics of cell and module characterization, module and system performance, materials and module durability/reliability research, solar radiation, and applications are discussed.

  12. Photovoltaics performance and reliability workshop

    SciTech Connect (OSTI)

    Mrig, L. [ed.] [ed.

    1992-11-01T23:59:59.000Z

    This document consists of papers and viewgraphs compiled from the proceedings of a workshop held in September 1992. This workshop was the fifth in a series sponsored by NREL/DOE under the general subject areas of photovoltaic module testing and reliability. PV manufacturers, DOE laboratories, electric utilities and others exchanged technical knowledge and field experience. The topics of cell and module characterization, module and system performance, materials and module durability/reliability research, solar radiation, and applications are discussed.

  13. Bandwidth assignment for reliable fixed broadband wireless Grit Claen

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    linear programming (ILP) counterparts. We further propose cutset-based valid inequalities to enhanceBandwidth assignment for reliable fixed broadband wireless networks Grit Claßen Lehrstuhl II f of data routing and bandwidth assignment that minimizes the total renewal fees of licenses. This problem

  14. 1/30/2004 1 Reliable Return Address Stack

    E-Print Network [OSTI]

    Kaeli, David R.

    or if the function entry address is not available yet 1/30/2004 8 A R entry return RAS O entry exit APT Program Check for direct recursion Push onto RAS APT table: Record entry/exit address pairs of called entries ­ Multithreading ­ Speculative execution ­ Non-LIFO function calls 1/30/2004 7 Solution: Reliable

  15. Application of reliability analysis method to fusion component testing

    SciTech Connect (OSTI)

    Ying, A.Y.; Abdou, M.A. [Univ. of California, Los Angeles, CA (United States)

    1994-12-31T23:59:59.000Z

    The term reliability here implies that a component satisfies a set of performance criteria while under specified conditions of use over a specified period of time. For fusion nuclear technology, the reliability goal to be pursued is the development of a mean time between failures (MTBF) for a component which is longer than its lifetime goal. While the component lifetime is mainly determined by the fluence limitation (i.e., damage level) which leads to performance degradation or failure, the MTBF represents an arithmetic average life of all units in a population. One method of assessing the reliability goal involves determining component availability needs to meet the goal plant availability, defining a test-analyze-fix development program to improve component reliability, and quantifying both test times and the number of test articles that would be required to ensure that a specified target MTBF is met. Statistically, constant failure rates and exponential life distributions are assumed for analyses and blanket component development is used as an example. However, as data are collected the probability distribution of the parameter of interest can be updated in a Bayesian fashion. The nuclear component testing program will be structured such that reliability requirements for DEMO can be achieved. The program shall not exclude the practice of a good design (such as reducing the complexity of the system to the minimum essential for the required operation), the execution of high quality manufacturing and inspection processes, and the implication of quality assurance and control for component development. In fact, the assurance of a high quality testing/development program is essential so that there is no question left for reliability.

  16. Constructing Reliable Distributed Communication Systems with CORBA

    E-Print Network [OSTI]

    Schmidt, Douglas C.

    Constructing Reliable Distributed Communication Systems with CORBA Silvano Maffeis Douglas C model to support reliable data- and process- oriented distributed systems that communicate through syn distributed object computing systems with CORBA. First, we examine the question of whether reliable applica

  17. U.S. Department of Health and Human Services National Institutes of Health DATA BOOKExtramural Loan Repayment Programs

    E-Print Network [OSTI]

    Bandettini, Peter A.

    The Year in Review 1 The Five Extramural Loan Repayment Programs 2 Applications, Awards, and Success Rates 2011 The Year in Review In Fiscal Year (FY) 2011, 3,159 individuals applied to the five Extramural Loan

  18. Thermoelectric Materials By Design: Mechanical Reliability (Agreement...

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

    By Design: Mechanical Reliability (Agreement 14957) Thermoelectric Materials By Design: Mechanical Reliability (Agreement 14957) Presentation from the U.S. DOE Office of Vehicle...

  19. PEEM Thermal Stress and Reliability (Presentation)

    SciTech Connect (OSTI)

    O'Keefe, M. P.

    2007-11-08T23:59:59.000Z

    Advancing power electronics thermal stress and reliability is a critical factor in power electronics equipment. NREL aims to improve thermal stress and reliability of power electronics technologies.

  20. Distributed Generation Operational Reliability and Availability...

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

    Reliability and Availability Database, Final Report, January 2004 Distributed Generation Operational Reliability and Availability Database, Final Report, January 2004 This final...

  1. Recommendations to Address Power Reliability Concerns Raised...

    Energy Savers [EERE]

    Reliability Concerns Raised as a Result of Pending Environmental Regulations for Electric Generation Stations Recommendations to Address Power Reliability Concerns Raised as a...

  2. Sandia National Laboratories: photovoltaic plant reliability

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

    photovoltaic plant reliability Sandia-Electric Power Research Institute Partnership Publishes Photovoltaic Reliability Report On January 21, 2014, in Energy, Facilities, Grid...

  3. Sandia National Laboratories: national reliability database

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

    national reliability database Third Annual Continuous Reliability Enhancement for Wind (CREW) Database Report Now Available On October 17, 2013, in Energy, News, News & Events,...

  4. Smart Grid Investments Improve Grid Reliability, Resilience,...

    Office of Environmental Management (EM)

    Investments Improve Grid Reliability, Resilience, and Storm Responses (November 2014) Smart Grid Investments Improve Grid Reliability, Resilience, and Storm Responses (November...

  5. Low-Income Weatherization: The Human Dimension

    Broader source: Energy.gov [DOE]

    This presentation focuses on how the human dimension saves energy within low-income weatherization programs.

  6. Solar reliability and materials library. Volume 2. User's manual

    SciTech Connect (OSTI)

    Singh, H.; Wolosewicz, R.M.; Singh, I.

    1980-09-01T23:59:59.000Z

    This user's manual is the second of two volumes documenting the solar reliability and materials program (SRMP) library at Argonne National Laboratory (ANL). The first volume presents an overview of the solar reliability and materials library. This volume describes the data card formats, identification codes, and dictionaries used in recording data and compiling reliability statistics on solar energy systems. The library is structured around the solar heating and cooling system demonstration sites sponsored by the Department of Energy (DOE). Sufficient flexibility has been built into the coding plan to expand the library to include other solar energy systems. As with any reliability library, the structure will change with time and the needs of the solar energy community. As changes in structure occur, updated editions of the user's manual will be issued to incorporate them. Some of the programs that have been developed using the Statistical Analysis System (SAS) processor are presented to indicate the steps to be followed in linking the various SAS procedures into a production algorithm. Because SAS is a versatile system, other programs and outputs can be generated.

  7. A Reliability and Validity Study of the Protective Factors Survey to Assess Protective Factors in Families

    E-Print Network [OSTI]

    Counts, Jacqueline Marie

    2010-04-29T23:59:59.000Z

    and caregivers. Confirmatory factor analyses were conducted with a sample of 1,078 participants, who completed a parent education program in Nevada. Results provide psychometric data that support a valid and reliable four-factor solution, consisting of family...

  8. Ris-R-1235(EN) Reliability Databases

    E-Print Network [OSTI]

    .1 ISO standard: Gas and Oil - Collection of Reliability and Maintenance Data for Equipment 17 5.2 EDF standard for collection of reliability and maintenance data for equipment (also called MCD ­ Mode et Cause judgements on new equipment reliability parameters or using standard values or standard reliability models (e

  9. Assessing Reliability in Energy Supply Systems

    E-Print Network [OSTI]

    McCarthy, Ryan; Ogden, Joan M.; Sperling, Dan

    2008-01-01T23:59:59.000Z

    total of 15 metrics. Pathway reliability General objectives Adequacy Security Functional zones Primary energy supply

  10. Assessing reliability in energy supply systems

    E-Print Network [OSTI]

    McCarthy, Ryan W.; Ogden, Joan M.; Sperling, Daniel

    2007-01-01T23:59:59.000Z

    total of 15 metrics. Pathway reliability General objectives Adequacy Security Functional zones Primary energy supply

  11. The design of a reliable reputation system

    E-Print Network [OSTI]

    Swamynathan, Gayatri; Almeroth, Kevin C.; Zhao, Ben Y.

    2010-01-01T23:59:59.000Z

    reliability by spreading its transactions evenly across all 20 peers in the system (shown by Distribution

  12. Photovoltaic performance and reliability workshop

    SciTech Connect (OSTI)

    Kroposki, B.

    1996-10-01T23:59:59.000Z

    This proceedings is the compilation of papers presented at the ninth PV Performance and Reliability Workshop held at the Sheraton Denver West Hotel on September 4--6, 1996. This years workshop included presentations from 25 speakers and had over 100 attendees. All of the presentations that were given are included in this proceedings. Topics of the papers included: defining service lifetime and developing models for PV module lifetime; examining and determining failure and degradation mechanisms in PV modules; combining IEEE/IEC/UL testing procedures; AC module performance and reliability testing; inverter reliability/qualification testing; standardization of utility interconnect requirements for PV systems; need activities to separate variables by testing individual components of PV systems (e.g. cells, modules, batteries, inverters,charge controllers) for individual reliability and then test them in actual system configurations; more results reported from field experience on modules, inverters, batteries, and charge controllers from field deployed PV systems; and system certification and standardized testing for stand-alone and grid-tied systems.

  13. Wind turbine reliability database update.

    SciTech Connect (OSTI)

    Peters, Valerie A.; Hill, Roger Ray; Stinebaugh, Jennifer A.; Veers, Paul S.

    2009-03-01T23:59:59.000Z

    This report documents the status of the Sandia National Laboratories' Wind Plant Reliability Database. Included in this report are updates on the form and contents of the Database, which stems from a fivestep process of data partnerships, data definition and transfer, data formatting and normalization, analysis, and reporting. Selected observations are also reported.

  14. FIELD RELIABILITY OF ELECTRONIC SYSTEMS

    E-Print Network [OSTI]

    study of in-the-field experience of electronics reliability. Tage Elm. Abstract. This report and internally) induced failures. The report is not meant to be merely an indication of the state of the art for the re- liability prediction methods we know, but also as a contribution to the investigation of man-machine

  15. Review of Quantitative Software Reliability Methods

    SciTech Connect (OSTI)

    Chu, T.L.; Yue, M.; Martinez-Guridi, M.; Lehner, J.

    2010-09-17T23:59:59.000Z

    The current U.S. Nuclear Regulatory Commission (NRC) licensing process for digital systems rests on deterministic engineering criteria. In its 1995 probabilistic risk assessment (PRA) policy statement, the Commission encouraged the use of PRA technology in all regulatory matters to the extent supported by the state-of-the-art in PRA methods and data. Although many activities have been completed in the area of risk-informed regulation, the risk-informed analysis process for digital systems has not yet been satisfactorily developed. Since digital instrumentation and control (I&C) systems are expected to play an increasingly important role in nuclear power plant (NPP) safety, the NRC established a digital system research plan that defines a coherent set of research programs to support its regulatory needs. One of the research programs included in the NRC's digital system research plan addresses risk assessment methods and data for digital systems. Digital I&C systems have some unique characteristics, such as using software, and may have different failure causes and/or modes than analog I&C systems; hence, their incorporation into NPP PRAs entails special challenges. The objective of the NRC's digital system risk research is to identify and develop methods, analytical tools, and regulatory guidance for (1) including models of digital systems into NPP PRAs, and (2) using information on the risks of digital systems to support the NRC's risk-informed licensing and oversight activities. For several years, Brookhaven National Laboratory (BNL) has worked on NRC projects to investigate methods and tools for the probabilistic modeling of digital systems, as documented mainly in NUREG/CR-6962 and NUREG/CR-6997. However, the scope of this research principally focused on hardware failures, with limited reviews of software failure experience and software reliability methods. NRC also sponsored research at the Ohio State University investigating the modeling of digital systems using dynamic PRA methods. These efforts, documented in NUREG/CR-6901, NUREG/CR-6942, and NUREG/CR-6985, included a functional representation of the system's software but did not explicitly address failure modes caused by software defects or by inadequate design requirements. An important identified research need is to establish a commonly accepted basis for incorporating the behavior of software into digital I&C system reliability models for use in PRAs. To address this need, BNL is exploring the inclusion of software failures into the reliability models of digital I&C systems, such that their contribution to the risk of the associated NPP can be assessed.

  16. Associate Vice President Human Resources

    E-Print Network [OSTI]

    Arnold, Jonathan

    Associate Vice President Human Resources Enjoy Athens! Great schools Affordable housing Eclectic Vice President for Human Resources. This position reports directly to the Vice President for Finance and Administration and provides leadership for the University's human resources programs and services

  17. Gearbox Reliability Collaborative Bearing Calibration

    SciTech Connect (OSTI)

    van Dam, J.

    2011-10-01T23:59:59.000Z

    NREL has initiated the Gearbox Reliability Collaborative (GRC) to investigate the root cause of the low wind turbine gearbox reliability. The GRC follows a multi-pronged approach based on a collaborative of manufacturers, owners, researchers and consultants. The project combines analysis, field testing, dynamometer testing, condition monitoring, and the development and population of a gearbox failure database. At the core of the project are two 750kW gearboxes that have been redesigned and rebuilt so that they are representative of the multi-megawatt gearbox topology currently used in the industry. These gearboxes are heavily instrumented and are tested in the field and on the dynamometer. This report discusses the bearing calibrations of the gearboxes.

  18. Power Reliability at BASF Corporation

    E-Print Network [OSTI]

    Theising, T. R.

    2011-01-01T23:59:59.000Z

    Power Reliability at BASF Corporation Thomas R. Theising Energy Systems Manager BASF Corporation ABSTRACT: Quality is defined not as what the supplier puts into the product but what the customer gets out and is willing to pay for. Power.... INTRODUCTION: BASF often identifies its? power quality by the effects it has on its ability to manufacture products. Improvements are made to remedy the power quality problems either through the elimination of the problems or through some means...

  19. Power Reliability at BASF Corporation

    E-Print Network [OSTI]

    Theising, T. R.

    2012-01-01T23:59:59.000Z

    Power Reliability at BASF Corporation Thomas R. Theising Energy Systems Manager BASF Corporation ABSTRACT: Quality is defined not as what the supplier puts into the product but what the customer gets out and is willing to pay for. Power.... INTRODUCTION: BASF often identifies its? power quality by the effects it has on its ability to manufacture products. Improvements are made to remedy the power quality problems either through the elimination of the problems or through some means...

  20. Microgrids and Heterogeneous Security, Quality, Reliability, and Availability

    E-Print Network [OSTI]

    Marnay, Chris

    2007-01-01T23:59:59.000Z

    and Energy Reliability, Distribution System Integrationand Energy Reliability, Distribution System Integration

  1. Fault Tolerant Control using Cartesian Genetic Programming

    E-Print Network [OSTI]

    Fernandez, Thomas

    Fault Tolerant Control using Cartesian Genetic Programming Yoshikazu Hirayama University of York]: Robotics-- Sensors; F.2.2 [Analysis of Algorithms and Problem Complexity]: Nonnumerical Algorithms and Problems General Terms Algorithms, Reliability Keywords cartesian genetic programming, evolutionary

  2. Reliable renewable energy for a new electric infrastructure.

    SciTech Connect (OSTI)

    Hanley, Charles J.

    2010-05-01T23:59:59.000Z

    This is workshop is about methodologies, tools, techniques, models, training, codes and standards, etc., that can improve reliability of systems while reducing costs. We've intentionally scaled back on presentation time to allow more time for interaction. Sandia's PV Program Vision - Recognition as a world-class facility to develop and integrate new photovoltaic components, systems, and architectures for the future of our electric/energy delivery systems.

  3. PV Module Reliability R&D Project Overview

    SciTech Connect (OSTI)

    Hulstrom, R. L.

    2005-01-01T23:59:59.000Z

    The DOE Solar Energy Technologies Program includes a sub-key activity entitled ''Photovoltaic Module Reliability R&D''. This activity has been in existence for several years to help ensure that the PV technologies that advance to the commercial module stage have acceptable service lifetimes and annual performance degradation rates. The long-term (2020) goal, as stated in the Solar Program Multi-Year Technical Plan [1], is to assist industry with the development of PV systems that have 30-year service lifetimes and 1% annual performance degradation rates. The corresponding module service lifetimes and annual performance degradation rate would have to be 30 years lifetime and approximately 0.5% (or less, depending on the type of PV system) annual performance degradation. Reaching this goal is critical to achieving the PV technology Levelized Energy Cost Targets, as listed and described in the Solar Program Multi-Year Technical Plan. This paper is an overview of the Module Reliability R&D sub-key activity. More details and the major results and accomplishments are covered in the papers presented in the PV Module Reliability Session of the DOE Solar Energy Technology Review Meeting, October 25-28, 2004, in Denver, Colorado.

  4. Reliability Assessment Incorporating Operational Considerations and Economic

    E-Print Network [OSTI]

    PSERC Reliability Assessment Incorporating Operational Considerations and Economic Aspects Engineering Research Center Reliability Assessment Incorporating Operational Considerations and Economic and Economic Aspects for Large Interconnected Grids." We express our appreciation for the support provided

  5. Electric Power Reliability in Chemical Plants

    E-Print Network [OSTI]

    Cross, M. B.

    The quality and reliability of utility-generated electric power is presently receiving a great deal of attention from the chemical and refining industry. What changes have taken place to make electric power reliability a major topic of discussion...

  6. Arnold Schwarzenegger REAL-TIME GRID RELIABILITY

    E-Print Network [OSTI]

    Energy Research (PIER) California Energy Commission Beth Chambers Contract Manager Jamie Patterson (VSA) prototype to monitor system voltage conditions and provide real time dispatchers with reliabilityArnold Schwarzenegger Governor REAL-TIME GRID RELIABILITY MANAGEMENT California ISO Real

  7. Data Communication Principles Reliable Data Transfer

    E-Print Network [OSTI]

    Ramkumar, Mahalingam

    Data Communication Principles Switching Reliable Data Transfer Data Communication Basics Mahalingam Ramkumar Mississippi State University, MS September 8, 2014 Ramkumar CSE 4153 / 6153 #12;Data Communication Principles Switching Reliable Data Transfer 1 Data Communication Principles Data Rate of a Communication

  8. Reliability Analysis of Microelectronic Components and Materials

    E-Print Network [OSTI]

    Berlin,Technische Universität

    1 Reliability Analysis of Microelectronic Components and Materials Increasing numbers on the structural integrity of embedded micro- electronic components and assemblies. Improved knowledge and modeling methods are critical for the reliable use of electronic packages. In particular, since the advent

  9. Electric Power Reliability in Chemical Plants 

    E-Print Network [OSTI]

    Cross, M. B.

    1989-01-01T23:59:59.000Z

    at plants across the country? Has the quality and reliability of utility-generated power deteriorated over the past five or ten years? Or, has the perception of what constitutes reliable power changed with the advent, installation, and increasing usage...

  10. Distributed Generation Operational Reliability, Executive Summary...

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

    2004 This report summarizes the results of the project, "Distributed Generation Market Transformation Tools: Distributed Generation Reliability and Availability Database,"...

  11. Reliability Challenges for Solar Energy (Presentation)

    SciTech Connect (OSTI)

    Kurtz, S.

    2009-12-08T23:59:59.000Z

    Presentation that reviews reliability issues related to various types of photovoltaic tecnnologies, including crystalline silicon, thin films, and concentrating PV.

  12. LUNAR MASS SPECTROMETER RELIABILITY LOGIC DIAGRAM

    E-Print Network [OSTI]

    Rathbun, Julie A.

    point (A) to (F). The block diagram also defines the reliability functions for the purpose of FMEA 1

  13. The Software Engineering Master's Program 1. Introduction

    E-Print Network [OSTI]

    of Embedded Real-time Systems; ___SW4581 Software Reliability (3-1); ___SW4582 Weapons System Software SafetyThe Software Engineering Master's Program 1. Introduction The Software Engineering program at the U to learn all aspects of software development and the skills needed to efficiently and reliably plan

  14. Reliability-based casing design

    SciTech Connect (OSTI)

    Maes, M.A. [Univ. of Calgary, Alberta (Canada). Civil Engineering Dept.; Gulati, K.C.; Johnson, R.C. [Mobil Research and Development Corp., Dallas, TX (United States); McKenna, D.L. [Mobil Producing Nigeria, Lagos (Nigeria); Brand, P.R.; Lewis, D.B. [Mobil E and P Technical Center, Dallas, TX (United States)

    1995-06-01T23:59:59.000Z

    The present paper describes the development of reliability-based design criteria for oil and/or gas well casing/tubing. The approach is based on the fundamental principles of limit state design. Limit states for tubulars are discussed and specific techniques for the stochastic modeling of loading and resistance variables are described. Zonation methods and calibration techniques are developed which are geared specifically to the characteristic tubular design for both hydrocarbon drilling and production applications. The application of quantitative risk analysis to the development of risk-consistent design criteria is shown to be a major and necessary step forward in achieving more economic tubular design.

  15. RELIABILITY-BASED CASTING PROCESS DESIGN OPTIMIZATION

    E-Print Network [OSTI]

    Beckermann, Christoph

    RELIABILITY-BASED CASTING PROCESS DESIGN OPTIMIZATION Richard Hardin1 , K.K. Choi1 , and Christoph 52242-1527 Keywords: Casting Process Design, Optimization, Reliability-Based Design Optimization purpose reliability-based design optimization (RBDO) software tool previously developed at the University

  16. Reliability-based condition assessment of steel containment and liners

    SciTech Connect (OSTI)

    Ellingwood, B.; Bhattacharya, B.; Zheng, R. [Johns Hopkins Univ., Baltimore, MD (United States). Dept. of Civil Engineering

    1996-11-01T23:59:59.000Z

    Steel containments and liners in nuclear power plants may be exposed to aggressive environments that may cause their strength and stiffness to decrease during the plant service life. Among the factors recognized as having the potential to cause structural deterioration are uniform, pitting or crevice corrosion; fatigue, including crack initiation and propagation to fracture; elevated temperature; and irradiation. The evaluation of steel containments and liners for continued service must provide assurance that they are able to withstand future extreme loads during the service period with a level of reliability that is sufficient for public safety. Rational methodologies to provide such assurances can be developed using modern structural reliability analysis principles that take uncertainties in loading, strength, and degradation resulting from environmental factors into account. The research described in this report is in support of the Steel Containments and Liners Program being conducted for the US Nuclear Regulatory Commission by the Oak Ridge National Laboratory. The research demonstrates the feasibility of using reliability analysis as a tool for performing condition assessments and service life predictions of steel containments and liners. Mathematical models that describe time-dependent changes in steel due to aggressive environmental factors are identified, and statistical data supporting the use of these models in time-dependent reliability analysis are summarized. The analysis of steel containment fragility is described, and simple illustrations of the impact on reliability of structural degradation are provided. The role of nondestructive evaluation in time-dependent reliability analysis, both in terms of defect detection and sizing, is examined. A Markov model provides a tool for accounting for time-dependent changes in damage condition of a structural component or system. 151 refs.

  17. GRADUATE PROGRAM UNDERGRADUATE PROGRAMS

    E-Print Network [OSTI]

    SELF STUDY GRADUATE PROGRAM UNDERGRADUATE PROGRAMS DEPARTMENT OF POLITICAL SCIENCE COLLEGE OF LIBERALARTS TEXAS A&M UNIVERSITY March 2007 #12;SELF STUDY GRADUATE PROGRAM UNDERGRADUATE PROGRAMS DEPARTMENT........................................................................................ 4 Brief History of Degree Programs and the Department

  18. OPTIMAL RELIABILITY ALLOCATION IN SERIES-PARALLEL SYSTEMS FROM COMPONENTS' DISCRETE COST -RELIABILITY DATA SETS

    E-Print Network [OSTI]

    Smith, Alice E.

    is not known. Instead, we consider the more realistic assumption of discrete cost-reliability data sets expressions for cost-reliability curves, we consider discrete cost-reliability data sets for each componentOPTIMAL RELIABILITY ALLOCATION IN SERIES-PARALLEL SYSTEMS FROM COMPONENTS' DISCRETE COST

  19. Nondestructive Examination (NDE) Reliability for Inservice Inspection of Light Water Reactors. Semiannual report, October 1990--March 1991: Volume 13

    SciTech Connect (OSTI)

    Doctor, S.R.; Good, M.S.; Heasler, P.G.; Hockey, R.L.; Simonen, F.A.; Spanner, J.C.; Taylor, T.T.; Vo, T.V. [Pacific Northwest Lab., Richland, WA (United States)

    1992-07-01T23:59:59.000Z

    The Evaluation and Improvement of NDE Reliability for Inservice Inspection of Light Water Reactors (NDE Reliability) Program at the Pacific Northwest Laboratory was established by the Nuclear Regulatory Commission to determine the reliability of current inservice inspection (ISI) techniques and to develop recommendations that will ensure a suitably high inspection reliability. The objectives of this program include determining the reliability of ISI performed on the primary systems of commercial light-water reactors (LWRs); using probabilistic fracture mechanics analysis to determine the impact of NDE unreliability on system safety; and evaluating reliability improvements that can be achieved with improved and advanced technology. A final objective is to formulate recommended revisions to the Regulatory and ASME Code requirements, based on material properties, service conditions, and NDE uncertainties.

  20. 2012 CERTS Transmission Reliability R&D Internal Program Review...

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

    8 - 8:30: Welcome, Introductions, DOE remarks Phil Overholt, DOE; Carl Imhoff, PNNL; Joe Eto, LBNL SESSION I: 20 minute presentations & 10 minutes Q&A 8:30 - 9:...

  1. Microgrid Reliability Modeling and Battery Scheduling Using Stochastic Linear Programming

    E-Print Network [OSTI]

    Cardoso, Goncalo

    2014-01-01T23:59:59.000Z

    significant impact on both energy and demand costs, althoughtariffs for both energy and power demand incurs significant0) = 4 Total energy costs TOU charges Demand charges Average

  2. Reliable and Efficient Programming Abstractions for Wireless Sensor Networks

    E-Print Network [OSTI]

    Kothari, Nupur; Gummadi, Ramakrishna; Millstein, Todd; Govindan, Ramesh

    2007-01-01T23:59:59.000Z

    node n){ closest = n; req=TOS_LOCAL_ADDRESS; post transfer_isfree) { reserved_node=TOS_LOCAL_ADDRESS; call MsgInt.send_node(node n){ 13: orig=TOS_LOCAL_ADDRESS; 14: start_node[0]=

  3. Reliability and Markets Program Information | Department of Energy

    Office of Environmental Management (EM)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011 Strategic2 OPAM615_CostNSAR -Department of Energyasto the NRC CommitteeRelease

  4. 2013 Transmission Reliability Program Peer Review - Day 1 Presentations |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartment ofCBFO-13-3322(EE) |2Department ofDepartment oftheofStrategic3.

  5. 2013 Transmission Reliability Program Peer Review - Day 2 Presentations |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartment ofCBFO-13-3322(EE) |2Department ofDepartment

  6. 2014 Transmission Reliability Program Peer Review - Day 1 Presentations |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartment ofCBFO-13-3322(EE)Department ofNow inEnergy Two|Department of

  7. 2014 Transmission Reliability Program Peer Review - Day 2 Presentations |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartment ofCBFO-13-3322(EE)Department ofNow inEnergy Two|Department

  8. 2015 Transmission Reliability Program Peer Review - Day 1 Presentations |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartment ofCBFO-13-3322(EE)DepartmentVery5 AnnualDillingham, AKThank

  9. 2015 Transmission Reliability Program Peer Review - Day 2 Presentations |

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742Energy China 2015ofDepartment ofCBFO-13-3322(EE)DepartmentVery5 AnnualDillingham,

  10. 2015 Transmission Reliability Program Peer Review | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed off Energy.gov. Are you0 ARRA Newsletters 2010 ARRA Newsletters201416-17, 2015 |5 Peer2015 Race20155

  11. 2013 Transmission Reliability Program Peer Review | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 RussianBy:Whether you're a homeZappos.comThe Office of2014) |3

  12. 2014 Transmission Reliability Program Peer Review | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33Frequently20,000 RussianBy:Whether you're a homeZappos.comTheSecretary MonizTheDepartment of|0

  13. 2010 Transmission Reliability Program Peer Review | Department of Energy

    Energy Savers [EERE]

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directed offOCHCO Overview OCHCOSystems AnalysisVOLUME I A1/19/1015 Blog Posts to6Energy 0 Smart Grid0

  14. 2010 Transmission Reliability Program Peer Review | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The Future of BadTHE U.S.Energy Two Afternoon Presentations 20102010

  15. 2013 Transmission Reliability Program Peer Review | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The Future of BadTHEEnergy Vehicle Analysis3 FacilityA.GTODepartment of2013

  16. 2014 Transmission Reliability Program Peer Review | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn't Your Destiny: The Future of BadTHEEnergy VehicleSessionOffice44Department of Energy2014

  17. Reliability and Markets Program Information | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin of ContaminationHubs+18,new2004_v1.3_5.0.zipFlorida4Visitors Chapter 5.1 (MarchFilters

  18. Reliability Testing of Polysilicon For MEMs Devices

    SciTech Connect (OSTI)

    LaVan, D.A.; Buchheit, T.E.

    1999-04-05T23:59:59.000Z

    Mission critical applications of MEMS devices require knowledge of the distribution in their material properties and long-term reliability of the small-scale structures. This project reports on a new testing program at Sandia to quantify the strength distribution using samples that reflect the dimensions of critical MEMS components. The strength of polysilicon fabricated with Sandia's SUMMiT 4-layer process was successfully measured using samples with gage sections 2.5 {micro}m thick by 1.7 {micro}m wide and lengths of 15 and 25 {micro}m. These tensile specimens have a freely moving pivot on one end that anchors the sample to the silicon die and prevents off axis loading during testing. Each sample is loaded in uniaxial tension by pulling laterally with a flat tipped diamond in a computer-controlled Nanoindenter. The stress-strain curve is calculated using the specimen cross section and gage length dimensions verified by measuring against a standard in the SEM. The first 48 samples had a means strength of 2.24 {+-} 0.35 GPa. Fracture strength measurements grouped into three strength levels, which matched three failure modes observed in post mortem examinations. The seven samples in the highest strength group failed in the gage section (strength of 2.77 {+-} 0.04 GPa), the moderate strength group failed at the gage section fillet and the lowest strength group failed at a dimple in the hub. With this technique, multiple tests can be programmed at one time and performed without operator assistance at a rate of 20-30 per day allowing the collection of significant populations of data. Since the new test geometry has been proven, the project is moving to test the distributions seen from real geometric features typical to MEMS such as the effect of gage length, fracture toughness, bonding between layers, etch holes, dimples and shear of gear teeth.

  19. Electricity Delivery and Energy Reliability | Department of Energy

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

    Electricity Delivery and Energy Reliability Electricity Delivery and Energy Reliability information about the delivery of electricity and energy reliability Electricity Delivery...

  20. Microgrids and Heterogeneous Security, Quality, Reliability, and Availability

    E-Print Network [OSTI]

    Marnay, Chris

    2007-01-01T23:59:59.000Z

    quality, reliability, and availability,” IEEE Power & EnergyReliability, and Availability Chris Marnay EnvironmentalQuality, Reliability, and Availability C. Marnay Ernest

  1. Reliable computation of homogeneous azeotropes

    SciTech Connect (OSTI)

    Maier, R.W.; Brennecke, J.F.; Stadtherr, M.A. [Univ. of Notre Dame, IN (United States). Dept. of Chemical Engineering] [Univ. of Notre Dame, IN (United States). Dept. of Chemical Engineering

    1998-08-01T23:59:59.000Z

    It is important to determine the existence and composition of homogeneous azeotropes in the analysis of phase behavior and in the synthesis and design of separation systems, from both theoretical and practical standpoints. A new method for reliably locating any and all homogeneous azeotropes for multicomponent mixtures is presented. The method also verifies the nonexistence of homogeneous azeotropes if none are present. The method is based on interval analysis, in particular an interval-Newton/generalized-bisection-algorithm providing a mathematical and computational guarantee that all azeotropes are located. This general-purpose technique can be applied in connection with any thermodynamic models. The technique is illustrated in several example problems using the Wilson, NRTL, and UNIQUAC activity-coefficient models.

  2. Utility-scale grid-tied PV inverter reliability workshop summary report.

    SciTech Connect (OSTI)

    Granata, Jennifer E.; Quintana, Michael A.; Tasca, Coryne Adelle (SRA International, Inc., Fairfax, VA); Atcitty, Stanley

    2011-07-01T23:59:59.000Z

    A key to the long-term success of the photovoltaic (PV) industry is confidence in the reliability of PV systems. Inverters are the most commonly noted cause of PV system incidents triggered in the field. While not all of these incidents are reliability-related or even necessarily failures, they still result in a loss of generated power. With support from the U.S. Department of Energy's Solar Energy Technologies Program, Sandia National Laboratories organized a Utility-Scale Grid-Tied Inverter Reliability Workshop in Albuquerque, New Mexico, January 27-28, 2011. The workshop addressed the reliability of large (100-kilowatt+) grid-tied inverters and the implications when such inverters fail, evaluated inverter codes and standards, and provided discussion about opportunities to enhance inverter reliability. This report summarizes discussions and presentations from the workshop and identifies opportunities for future efforts.

  3. Project Profile: Physics-Based Reliability Models for Supercritical-CO2 Turbomachinery Components

    Broader source: Energy.gov [DOE]

    GE, under the Physics of Reliability: Evaluating Design Insights for Component Technologies in Solar (PREDICTS) Program will be leveraging internally developed models to predict the reliability of hybrid gas bearing (HGB) and dry gas seal (DGS) components in the turboexpander of a supercritical CO2 turbine. The Bayesian model is to include phase changes, low cycle fatigue/high cycle fatigue, dynamic instabilities, and corrosion processes.

  4. Physics-Based Stress Corrosion Cracking Component Reliability Model cast in an R7-Compatible Cumulative Damage Framework

    SciTech Connect (OSTI)

    Unwin, Stephen D.; Lowry, Peter P.; Layton, Robert F.; Toloczko, Mychailo B.; Johnson, Kenneth I.; Sanborn, Scott E.

    2011-07-01T23:59:59.000Z

    This is a working report drafted under the Risk-Informed Safety Margin Characterization pathway of the Light Water Reactor Sustainability Program, describing statistical models of passives component reliabilities.

  5. Reliability and Maintainability Issues for the Next Linear Collider

    SciTech Connect (OSTI)

    Wilson, Zane J.; Gold, Saul L.; Koontz, Ron F.; Lavine, Ted L.; /SLAC

    2011-08-26T23:59:59.000Z

    Large accelerators for high energy physics research traditionally have been designed using informal best design, engineering, and management practices to achieve acceptable levels of operational availability. However, the Next Linear Collider(NLC) project presents a particular challenge for operational availability due to the unprecedented size and complexity of the accelerator systems required to achieve the physics goals of high center-of-mass energy and high luminosity. Formal reliability and maintainability analysis, design, and implementation will be required to achieve acceptable operational availability for the high energy physics research program. This paper introduces some of the basic concepts of reliability analysis and applies them to the 2.6-cm microwave power system of the two 10-km-long, 250-GeV linacs that are currently proposed for the NLC design.

  6. SHEAN (Simplified Human Error Analysis code) and automated THERP

    SciTech Connect (OSTI)

    Wilson, J.R.

    1993-06-01T23:59:59.000Z

    One of the most widely used human error analysis tools is THERP (Technique for Human Error Rate Prediction). Unfortunately, this tool has disadvantages. The Nuclear Regulatory Commission, realizing these drawbacks, commissioned Dr. Swain, the author of THERP, to create a simpler, more consistent tool for deriving human error rates. That effort produced the Accident Sequence Evaluation Program Human Reliability Analysis Procedure (ASEP), which is more conservative than THERP, but a valuable screening tool. ASEP involves answering simple questions about the scenario in question, and then looking up the appropriate human error rate in the indicated table (THERP also uses look-up tables, but four times as many). The advantages of ASEP are that human factors expertise is not required, and the training to use the method is minimal. Although not originally envisioned by Dr. Swain, the ASEP approach actually begs to be computerized. That WINCO did, calling the code SHEAN, for Simplified Human Error ANalysis. The code was done in TURBO Basic for IBM or IBM-compatible MS-DOS, for fast execution. WINCO is now in the process of comparing this code against THERP for various scenarios. This report provides a discussion of SHEAN.

  7. Nondestructive examination (NDE) reliability for inservice inspection of light waters reactors

    SciTech Connect (OSTI)

    Doctor, S.R.; Deffenbaugh, J.D.; Good, M.S.; Green, E.R.; Heasler, P.G.; Simonen, F.A.; Spanner, J.C.; Taylor, T.T. (Pacific Northwest Lab., Richland, WA (USA))

    1989-11-01T23:59:59.000Z

    Evaluation and Improvement of NDE Reliability for Inservice Inspection of Light Water Reactors (NDE Reliability) Program at the Pacific Northwest Laboratory was established by the Nuclear Regulatory Commission to determine the reliability of current inservice inspection (ISI) techniques and to develop recommendations that will ensure a suitably high inspection reliability. The objectives of this program include determining the reliability of ISI performed on the primary systems of commercial light-water reactors (LWRs); using probabilistic fracture mechanics analysis to determine the impact of NDE unreliability on system safety; and evaluating reliability improvements that can be achieved with improved and advanced technology. A final objective is to formulate recommended revisions to ASME Code and Regulatory requirements, based on material properties, service conditions, and NDE uncertainties. The program scope is limited to ISI of the primary systems including the piping, vessel, and other inspected components. This is a progress report covering the programmatic work from April 1988 through September 1988. 33 refs., 70 figs., 12 tabs.

  8. General Order Ensuring Reliable Electric Service (Louisiana)

    Broader source: Energy.gov [DOE]

    The standards set forth herein have been developed to provide consumers, the Louisiana Public Service Commission, and jurisdictional electric utilities with a uniform method of ensuring reliable...

  9. Thermoelectric Materials By Design: Mechanical Reliability (Agreement...

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

    enable improvements in TE device design, optimization, and maximum reliability. * Next year will involve: - Continued TE material database generation. - TE modeling and...

  10. Improving Wind Turbine Gearbox Reliability: Preprint

    SciTech Connect (OSTI)

    Musial, W.; Butterfield, S.; McNiff, B.

    2007-06-01T23:59:59.000Z

    This paper describes a new research and development initiative to improve gearbox reliability in wind turbines begun at the National Renewable Energy Laboratory (NREL) in Golden, Colorado, USA.

  11. RTI International Develops SSL Luminaire Reliability Model |...

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

    is developing and validating accelerated life testing (ALT) methodologies and a reliability model for predicting the lifetime of integrated solid-state lighting...

  12. Sandia National Laboratories: PV Reliability Operations Maintenance...

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

    Maintenance database Sandia-Electric Power Research Institute Partnership Publishes Photovoltaic Reliability Report On January 21, 2014, in Energy, Facilities, Grid...

  13. NORTH AMERICAN ELECTRIC RELIABILITY COUNCIL: Preliminary Disturbance...

    Office of Environmental Management (EM)

    Preliminary Disturbance Report The following information represents a partial sequence of events based upon Reliability Coordinator information available to NERC. It is not...

  14. Sandia Energy - Continuous Reliability Enhancement for Wind ...

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

    Enhancement for Wind (CREW): Project Update Home Renewable Energy Energy News Wind Energy News & Events Systems Analysis Continuous Reliability Enhancement for Wind (CREW):...

  15. Comments of North American Electric Reliability Corporation ...

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

    currently developing a report, entitled "Reliability Consideration from Integration of Smart Grid" that will address many of the issues raised in the DOE RFI. North American...

  16. VSDP: Verified SemiDefinite Programming USER'S GUIDE, Beta ...

    E-Print Network [OSTI]

    2006-12-18T23:59:59.000Z

    Dec 18, 2006 ... To obtain more reliability we can use the function VSDPLOW which ...... error bounds for large-scale semidefinite programs in electronic struc-.

  17. Competition and Reliability in North American Electricity Markets...

    Energy Savers [EERE]

    Electricity Markets Technical Workshop Competition and Reliability in North American Electricity Markets Technical Workshop Competition and Reliability in North American...

  18. PV Performance and Reliability Validation Capabilities at Sandia...

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

    Performance and Reliability Validation Capabilities at Sandia National Laboratories PV Performance and Reliability Validation Capabilities at Sandia National Laboratories This...

  19. Evaluation of MHTGR fuel reliability

    SciTech Connect (OSTI)

    Wichner, R.P. [Oak Ridge National Lab., TN (United States); Barthold, W.P. [Barthold Associates, Inc., Knoxville, TN (United States)

    1992-07-01T23:59:59.000Z

    Modular High-Temperature Gas-Cooled Reactor (MHTGR) concepts that house the reactor vessel in a tight but unsealed reactor building place heightened importance on the reliability of the fuel particle coatings as fission product barriers. Though accident consequence analyses continue to show favorable results, the increased dependence on one type of barrier, in addition to a number of other factors, has caused the Nuclear Regulatory Commission (NRC) to consider conservative assumptions regarding fuel behavior. For this purpose, the concept termed ``weak fuel`` has been proposed on an interim basis. ``Weak fuel`` is a penalty imposed on consequence analyses whereby the fuel is assumed to respond less favorably to environmental conditions than predicted by behavioral models. The rationale for adopting this penalty, as well as conditions that would permit its reduction or elimination, are examined in this report. The evaluation includes an examination of possible fuel-manufacturing defects, quality-control procedures for defect detection, and the mechanisms by which fuel defects may lead to failure.

  20. Robot-Powered Reliability Testing at NREL's ESIF

    ScienceCinema (OSTI)

    Harrison; Kevin

    2014-06-10T23:59:59.000Z

    With auto manufacturers expected to roll out fuel cell electric vehicles in the 2015 to 2017 timeframe, the need for a reliable hydrogen fueling infrastructure is greater than ever. That's why the National Renewable Energy Laboratory (NREL) is using a robot in its Energy Systems Integration Facility (ESIF) to assess the durability of hydrogen fueling hoses, a largely untested-and currently costly-component of hydrogen fueling stations. The automated machine mimics the repetitive stress of a human bending and twisting the hose to refuel a vehicle-all under the high pressure and low temperature required to deliver hydrogen to a fuel cell vehicle's onboard storage tank.

  1. Nuclear Computerized Library for Assessing Reactor Reliability (NUCLARR)

    SciTech Connect (OSTI)

    Gilbert, B.G.; Richards, R.E.; Reece, W.J.; Gertman, D.I.

    1992-10-01T23:59:59.000Z

    This Reference Guide contains instructions on how to install and use Version 3.5 of the NRC-sponsored Nuclear Computerized Library for Assessing Reactor Reliability (NUCLARR). The NUCLARR data management system is contained in compressed files on the floppy diskettes that accompany this Reference Guide. NUCLARR is comprised of hardware component failure data (HCFD) and human error probability (HEP) data, both of which are available via a user-friendly, menu driven retrieval system. The data may be saved to a file in a format compatible with IRRAS 3.0 and commercially available statistical packages, or used to formulate log-plots and reports of data retrieval and aggregation findings.

  2. Robot-Powered Reliability Testing at NREL's ESIF

    SciTech Connect (OSTI)

    Harrison; Kevin

    2013-12-05T23:59:59.000Z

    With auto manufacturers expected to roll out fuel cell electric vehicles in the 2015 to 2017 timeframe, the need for a reliable hydrogen fueling infrastructure is greater than ever. That's why the National Renewable Energy Laboratory (NREL) is using a robot in its Energy Systems Integration Facility (ESIF) to assess the durability of hydrogen fueling hoses, a largely untested-and currently costly-component of hydrogen fueling stations. The automated machine mimics the repetitive stress of a human bending and twisting the hose to refuel a vehicle-all under the high pressure and low temperature required to deliver hydrogen to a fuel cell vehicle's onboard storage tank.

  3. Software Reliability Cases: The Bridge Between Hardware, Software and System Safety and Reliability

    SciTech Connect (OSTI)

    Herrmann, D.S.; Peercy, D.E.

    1999-01-08T23:59:59.000Z

    High integrity/high consequence systems must be safe and reliable; hence it is only logical that both software safety and software reliability cases should be developed. Risk assessments in safety cases evaluate the severity of the consequences of a hazard and the likelihood of it occurring. The likelihood is directly related to system and software reliability predictions. Software reliability cases, as promoted by SAE JA 1002 and 1003, provide a practical approach to bridge the gap between hardware reliability, software reliability, and system safety and reliability by using a common methodology and information structure. They also facilitate early insight into whether or not a project is on track for meeting stated safety and reliability goals, while facilitating an informed assessment by regulatory and/or contractual authorities.

  4. Fundamental mechanisms of micromachine reliability

    SciTech Connect (OSTI)

    DE BOER,MAARTEN P.; SNIEGOWSKI,JEFFRY J.; KNAPP,JAMES A.; REDMOND,JAMES M.; MICHALSKE,TERRY A.; MAYER,THOMAS K.

    2000-01-01T23:59:59.000Z

    Due to extreme surface to volume ratios, adhesion and friction are critical properties for reliability of Microelectromechanical Systems (MEMS), but are not well understood. In this LDRD the authors established test structures, metrology and numerical modeling to conduct studies on adhesion and friction in MEMS. They then concentrated on measuring the effect of environment on MEMS adhesion. Polycrystalline silicon (polysilicon) is the primary material of interest in MEMS because of its integrated circuit process compatibility, low stress, high strength and conformal deposition nature. A plethora of useful micromachined device concepts have been demonstrated using Sandia National Laboratories' sophisticated in-house capabilities. One drawback to polysilicon is that in air the surface oxidizes, is high energy and is hydrophilic (i.e., it wets easily). This can lead to catastrophic failure because surface forces can cause MEMS parts that are brought into contact to adhere rather than perform their intended function. A fundamental concern is how environmental constituents such as water will affect adhesion energies in MEMS. The authors first demonstrated an accurate method to measure adhesion as reported in Chapter 1. In Chapter 2 through 5, they then studied the effect of water on adhesion depending on the surface condition (hydrophilic or hydrophobic). As described in Chapter 2, they find that adhesion energy of hydrophilic MEMS surfaces is high and increases exponentially with relative humidity (RH). Surface roughness is the controlling mechanism for this relationship. Adhesion can be reduced by several orders of magnitude by silane coupling agents applied via solution processing. They decrease the surface energy and render the surface hydrophobic (i.e. does not wet easily). However, only a molecular monolayer coats the surface. In Chapters 3-5 the authors map out the extent to which the monolayer reduces adhesion versus RH. They find that adhesion is independent of RH up to a threshold value, depending on the coating chemistry. The mechanism for the adhesion increase beyond this threshold value is that the coupling agent reconfigures from a surface to a bulk phase (Chapter 3). To investigate the details of how the adhesion increase occurs, the authors developed the mechanics for adhesion hysteresis measurements. These revealed that near-crack tip compression is the underlying cause of the adhesion increase (Chapter 4). A vacuum deposition chamber for silane coupling agent deposition was constructed. Results indicate that vapor deposited coatings are less susceptible to degradation at high RH (Chapter 5). To address issues relating to surfaces in relative motion, a new test structure to measure friction was developed. In contrast to other surface micromachined friction test structures, uniform apparent pressure is applied in the frictional contact zone (Chapter 6). The test structure will enable friction studies over a large pressure and dynamic range. In this LDRD project, the authors established an infrastructure for MEMS adhesion and friction metrology. They then characterized in detail the performance of hydrophilic and hydrophobic films under humid conditions, and determined mechanisms which limit this performance. These studies contribute to a fundamental understanding for MEMS reliability design rules. They also provide valuable data for MEMS packaging requirements.

  5. NIH Extramural Loan Repayment Programs U.S. Department of Health and Human Services National Institutes of Health www.lrp.nih.gov

    E-Print Network [OSTI]

    Bandettini, Peter A.

    of Contents The Year in Review The Five Extramural Loan Repayment Programs Applications, Awards, and Success Americans were recipients of 18 awards. The Year in Review #12;NIH Extramural Loan Repayment Programs FY

  6. Structural reliability of brittle materials - an analytical method

    E-Print Network [OSTI]

    Shields, Charles Burch

    1967-01-01T23:59:59.000Z

    on observed failure stress can be ex?la!ned. Pre~. ". cl (1) ?resents an example of this effect which illustrates the. mar'ked decrease in fai1ure. 'tran- th &7ith increasing test e1cment size z'hich is ob. . c;rved1. Testing of clem ni. . of varying... and Reliability of- Iic. chanlcal Systcr!s, Especially Ai craft Struct:ur es Aeronautical Syst. ems Div. , Al. SC, USA'& IIPAPB, Ohf o& (July 1961). 34 AI'!-";. I" D I X AN EX!DiPLE PPOBI, r:, &I '3'he comipuLcr programs presentecl in this paper do not...

  7. Shutdown heat removal system reliability in thermal reactors

    SciTech Connect (OSTI)

    Sun, Y.H.; Bari, R.A.

    1980-01-01T23:59:59.000Z

    An analysis of the failure probability per year of the shutdown heat removal system (SHRS) at hot standby conditions for two thermal reactor designs is presented. The selected reactor designs are the Pressurized Water Reactor and the Nonproliferation Alternative System Assessment Program Heavy Water Reactor. Failures of the SHRS following the initiating transients of loss of offsite power and loss of main feedwater system are evaluated. Common mode failures between components are incorporated in this anlaysis via the ..beta..-factor method and the sensitivity of the system reliability to common mode failures is investigated parametrically.

  8. Demand Response and Electric Grid Reliability

    E-Print Network [OSTI]

    Wattles, P.

    2012-01-01T23:59:59.000Z

    Demand Response and Electric Grid Reliability Paul Wattles Senior Analyst, Market Design & Development, ERCOT CATEE Conference, Galveston October 10, 2012 2 North American Bulk Power Grids CATEE Conference October 10, 2012 ? The ERCOT... adequacy ? ?Achieving more DR participation would . . . displace some generation investments, but would achieve the same level of reliability... ? ?Achieving this ideal requires widespread demand response and market structures that enable loads...

  9. Wind Energy Facility Reliability and Maintenance

    E-Print Network [OSTI]

    Ding, Yu

    Wind Energy Facility Reliability and Maintenance Eunshin Byon, Lewis Ntaimo, Chanan Singh and Yu related to wind energy facility reliability and mainte- nance focused more on qualitative aspects. In this chapter, we provide a comprehensive account of the existing research regarding wind energy facility

  10. Probabilistic Reliable Message Transmission Subodh Kumar

    E-Print Network [OSTI]

    North Carolina at Chapel Hill, University of

    Probabilistic Reliable Message Transmission Subodh Kumar January 17, 1996 Abstract Most communication systems require reliable transmission of a sequence of messages over a physical network which can with messages by the sender and they are acknowledged by the receiver. It is known that protocols that use

  11. Advances in Safety, Reliability and Risk Management -Proceedings of the European Safety and Reliability Conference, ESREL 2011 -European Safety and Reliability Conference: Advances in Safety, Reliability and

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Advances in Safety, Reliability and Risk Management - Proceedings of the European Safety, Reliability and Risk Management, ESREL 2011, Troyes : France (2011) In France, more than 99% of failed is global risk management. This allows analysis of the major risks faced by the busi- ness (loss

  12. Engineering Reliability into Web Sites: Google SRE

    E-Print Network [OSTI]

    Tomkins, Andrew

    Engineering Reliability into Web Sites: Google SRE Alex Perry alex.perry@google.com Santa Monica SRE, Google #12;Abstract This talk introduces Site Reliability Engineering (SRE) at Google, explaining team responsibilities by site Failures and instability consuming manpower Engineering being applied

  13. : : ". RSST I Lunar Day Counter Reliability Analysis

    E-Print Network [OSTI]

    Rathbun, Julie A.

    : : ". RSST I Lunar Day Counter Reliability Analysis NO. ATM 846 PAGE 1 REV. MO. OF 10 DATE 12/3/69 This ATM presents a Reliability analysis of the Lunar Day Counter, the Resettable Solid State Timer (RSST equipment. The analysis is based on a parts count, average failure rates and two (2) years operation

  14. NISTIR 7817 A Credential Reliability and

    E-Print Network [OSTI]

    NISTIR 7817 A Credential Reliability and Revocation Model for Federated Identities Hildegard Ferraiolo http://dx.doi.org/10.6028/NIST.IR.7817 #12;NISTIR 7817 A Credential Reliability and Revocation Interagency Report 7817 22 pages (Nov. 2012) Certain commercial entities, equipment, or materials may

  15. Reliable Distributed Computing for Decision Support Systems

    E-Print Network [OSTI]

    Bargiela, Andrzej

    Reliable Distributed Computing for Decision Support Systems Taha Osman, Andrzej Bargiela Department of application tasks on the currently avail- able computing nodes. Distributed Systems Reliability Due decision-support systems such as water distribution net- works, involving hundreds or even thousands

  16. Reliability of underwater hearing thresholds in pinnipeds

    E-Print Network [OSTI]

    Reichmuth, Colleen

    Reliability of underwater hearing thresholds in pinnipeds Brandon L. Southall Long Marine and certain testing parameters (e.g., equipment and research personnel), measured underwater hearing (0.2­6.4 kHz). These data address the reliability of acoustic signal detection measurements over time

  17. Contractor Human Resources Management Programs

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2014-02-06T23:59:59.000Z

    The revision will reflect organizational changes to Chapter III; delete references and requirements in Chapter IV; and remove CRDs from Chapters III and VII.

  18. Contractor Human Resource Management Programs

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1996-09-30T23:59:59.000Z

    Cancels DOE 3220.1A, DOE 3220.4A, DOE 3220.6A, DOE 3309.1A, DOE 3830.1, DOE 3890.1A, and DOE N 3131.1.

  19. NREL's Gearbox Reliability Collaborative leads to wind turbine gearbox reliability, lowering the cost of energy.

    E-Print Network [OSTI]

    the cost of energy. Unintended gearbox failures have a significant impact on the cost of wind farm will result in increased gearbox reliability and an overall reduction in the cost of wind energy. ProjectNREL's Gearbox Reliability Collaborative leads to wind turbine gearbox reliability, lowering

  20. Progress in evaluation and improvement in nondestructive examination reliability for inservice inspection of Light Water Reactors (LWRs) and characterize fabrication flaws in reactor pressure vessels

    SciTech Connect (OSTI)

    Doctor, S.R.; Bowey, R.E.; Good, M.S.; Friley, J.R.; Kurtz, R.J.; Simonen, F.A.; Taylor, T.T.; Heasler, P.G.; Andersen, E.S.; Diaz, A.A.; Greenwood, M.S.; Hockey, R.L.; Schuster, G.J.; Spanner, J.C.; Vo, T.V.

    1991-10-01T23:59:59.000Z

    This paper is a review of the work conducted under two programs. One (NDE Reliability Program) is a multi-year program addressing the reliability of nondestructive evaluation (NDE) for the inservice inspection (ISI) of light water reactor components. This program examines the reliability of current NDE, the effectiveness of evolving technologies, and provides assessments and recommendations to ensure that the NDE is applied at the right time, in the right place with sufficient effectiveness that defects of importance to structural integrity will be reliably detected and accurately characterized. The second program (Characterizing Fabrication Flaws in Reactor Pressure Vessels) is assembling a data base to quantify the distribution of fabrication flaws that exist in US nuclear reactor pressure vessels with respect to density, size, type, and location. These programs will be discussed as two separate sections in this report. 4 refs., 7 figs.

  1. College of Architecture, Arts and Humanities ARCHITECTURE,

    E-Print Network [OSTI]

    Bolding, M. Chad

    College of Architecture, Arts and Humanities COLLEGE OF ARCHITECTURE, ARTS AND HUMANITIES The College of Architecture, Arts and Humanities offers graduate programs in three schools: the School in Architecture; City and Regional Planning; Communication, Technology and Society; Construc- tion Science

  2. Human Activity Detection from RGBD Images

    E-Print Network [OSTI]

    Sung, Jaeyong; Selman, Bart; Saxena, Ashutosh

    2011-01-01T23:59:59.000Z

    Being able to detect and recognize human activities is important for making personal assistant robots useful in performing assistive tasks. The challenge is to develop a system that is low-cost, reliable in unstructured home settings, and also straightforward to use. In this paper, we use a RGBD sensor (Microsoft Kinect) as the input sensor, and present learning algorithms to infer the activities. Our algorithm is based on a hierarchical maximum entropy Markov model (MEMM). It considers a person's activity as composed of a set of sub-activities, and infers the two-layered graph structure using a dynamic programming approach. We test our algorithm on detecting and recognizing twelve different activities performed by four people in different environments, such as a kitchen, a living room, an office, etc., and achieve an average performance of 84.3% when the person was seen before in the training set (and 64.2% when the person was not seen before).

  3. Toward resilient high performance applications through real time reliability metric generaion and autonomous failure correction

    SciTech Connect (OSTI)

    Debardeleben, Nathan [Los Alamos National Laboratory; Chandler, Clayton [Los Alamos National Laboratory; Leangsuksun, Chokchai [LOUISIANA TECH UNIV

    2009-01-01T23:59:59.000Z

    One predominant barrier encountered in furthering research and development efforts aimed at facilitating resilient HPC applications is a substantial lack of existing reliability and performance data originating from extreme-scale computing distributions. In order to develop an understanding of how and why highly scaled HPC applications are encountering increasingly frequent performance interruptions, one must conduct extensive trending and analysis on contemporary machines and their associated programs. However, existing HPC application log files are labyrinthine documents that, even with the assistance of intelligent data mining algorithms, translate poorly to human discern. In addition, conventional log filtering, processes are limited to execution within a post-mortem, reactive time period, as the enormous size of these documents prevents efficient real time interaction. Thus, there exists a strong need within the HPC field for the provision of accurate-yet-concise real time application information. Moreover, the means of reporting this data must be sufficiently lightweight and non-intrusive, as to successfully-yet-discretely attach itself to the multiple processes running on multiple cores within tens (or in some cases, hundreds) of thousands of compute nodes. Furthermore, this information should in turn be used to facilitate the autonomous correction of application-threatening faults, suspensions, and interruptions. This paper describes a dynamic application instrumentation module (utilizing a combination of Open/SpeedShop software and custom scripting) aimed at successfully achieving these goals.

  4. Bringing Automated Formal Verification to PLC Program Development

    E-Print Network [OSTI]

    Fernández Adiego, Borja; Blanco Viñuela, Enrique

    Automation is the field of engineering that deals with the development of control systems for operating systems such as industrial processes, railways, machinery or aircraft without human intervention. In most of the cases, a failure in these control systems can cause a disaster in terms of economic losses, environmental damages or human losses. For that reason, providing safe, reliable and robust control systems is a first priority goal for control engineers. Ideally, control engineers should be able to guarantee that both software and hardware fulfill the design requirements. This is an enormous challenge in which industry and academia have been working and making progresses in the last decades. This thesis focuses on one particular type of control systems that operates industrial processes, the PLC (Programmable Logic Controller) - based control systems. Moreover it targets one of the main challenges for these systems, guaranteeing that PLC programs are compliant with their specifications. Traditionally ...

  5. Final report : testing and evaluation for solar hot water reliability.

    SciTech Connect (OSTI)

    Caudell, Thomas P. (University of New Mexico, Albuquerque, NM) [University of New Mexico, Albuquerque, NM; He, Hongbo (University of New Mexico, Albuquerque, NM) [University of New Mexico, Albuquerque, NM; Menicucci, David F. (Building Specialists, Inc., Albuquerque, NM) [Building Specialists, Inc., Albuquerque, NM; Mammoli, Andrea A. (University of New Mexico, Albuquerque, NM) [University of New Mexico, Albuquerque, NM; Burch, Jay (National Renewable Energy Laboratory, Golden CO) [National Renewable Energy Laboratory, Golden CO

    2011-07-01T23:59:59.000Z

    Solar hot water (SHW) systems are being installed by the thousands. Tax credits and utility rebate programs are spurring this burgeoning market. However, the reliability of these systems is virtually unknown. Recent work by Sandia National Laboratories (SNL) has shown that few data exist to quantify the mean time to failure of these systems. However, there is keen interest in developing new techniques to measure SHW reliability, particularly among utilities that use ratepayer money to pay the rebates. This document reports on an effort to develop and test new, simplified techniques to directly measure the state of health of fielded SHW systems. One approach was developed by the National Renewable Energy Laboratory (NREL) and is based on the idea that the performance of the solar storage tank can reliably indicate the operational status of the SHW systems. Another approach, developed by the University of New Mexico (UNM), uses adaptive resonance theory, a type of neural network, to detect and predict failures. This method uses the same sensors that are normally used to control the SHW system. The NREL method uses two additional temperature sensors on the solar tank. The theories, development, application, and testing of both methods are described in the report. Testing was performed on the SHW Reliability Testbed at UNM, a highly instrumented SHW system developed jointly by SNL and UNM. The two methods were tested against a number of simulated failures. The results show that both methods show promise for inclusion in conventional SHW controllers, giving them advanced capability in detecting and predicting component failures.

  6. Accelerated testing of metal foil tape joints and their effect of photovoltaic module reliability.

    SciTech Connect (OSTI)

    Puskar, Joseph David; Quintana, Michael A.; Sorensen, Neil Robert; Lucero, Samuel J.

    2009-07-01T23:59:59.000Z

    A program is underway at Sandia National Laboratories to predict long-term reliability of photovoltaic (PV) systems. The vehicle for the reliability predictions is a Reliability Block Diagram (RBD), which models system behavior. Because this model is based mainly on field failure and repair times, it can be used to predict current reliability, but it cannot currently be used to accurately predict lifetime. In order to be truly predictive, physics-informed degradation processes and failure mechanisms need to be included in the model. This paper describes accelerated life testing of metal foil tapes used in thin-film PV modules, and how tape joint degradation, a possible failure mode, can be incorporated into the model.

  7. Clean Coal Technology Programs: Program Update 2009

    SciTech Connect (OSTI)

    None

    2009-10-01T23:59:59.000Z

    The purpose of the Clean Coal Technology Programs: Program Update 2009 is to provide an updated status of the U.S. Department of Energy (DOE) commercial-scale demonstrations of clean coal technologies (CCT). These demonstrations have been performed under the Clean Coal Technology Demonstration Program (CCTDP), the Power Plant Improvement Initiative (PPII), and the Clean Coal Power Initiative (CCPI). Program Update 2009 provides: (1) a discussion of the role of clean coal technology demonstrations in improving the nation’s energy security and reliability, while protecting the environment using the nation’s most abundant energy resource—coal; (2) a summary of the funding and costs of the demonstrations; and (3) an overview of the technologies being demonstrated, along with fact sheets for projects that are active, recently completed, or recently discontinued.

  8. Clean coal technology programs: program update 2006

    SciTech Connect (OSTI)

    NONE

    2006-09-15T23:59:59.000Z

    The purpose of the Clean Coal Technology Programs: Program Update 2006 is to provide an updated status of the DOE commercial-scale demonstrations of clean coal technologies (CCTs). These demonstrations are performed under the Clean Coal Technology Demonstration Program (CCTDP), the Power Plant Improvement Initiative (PPII) and the Clean Coal Power Initiative (CCPI). Program Update 2006 provides 1) a discussion of the role of clean coal technology demonstrations in improving the nation's energy security and reliability, while protecting the environment using the nation's most abundant energy resource - coal; 2) a summary of the funding and costs of the demonstrations; and 3) an overview of the technologies being demonstrated, with fact sheets for demonstration projects that are active, recently completed, withdrawn or ended, including status as of June 30 2006. 4 apps.

  9. Adaptive Reliability Analysis of Excavation Problems

    E-Print Network [OSTI]

    Park, Jun Kyung

    2012-10-19T23:59:59.000Z

    . This analysis couples the adaptive design capabilities of the observational method with updated reliability indices, to be used in risk-based design decisions. A probabilistic framework is developed to predict three-dimensional deformation profiles due...

  10. Demand Response For Power System Reliability: FAQ

    SciTech Connect (OSTI)

    Kirby, Brendan J [ORNL

    2006-12-01T23:59:59.000Z

    Demand response is the most underutilized power system reliability resource in North America. Technological advances now make it possible to tap this resource to both reduce costs and improve. Misconceptions concerning response capabilities tend to force loads to provide responses that they are less able to provide and often prohibit them from providing the most valuable reliability services. Fortunately this is beginning to change with some ISOs making more extensive use of load response. This report is structured as a series of short questions and answers that address load response capabilities and power system reliability needs. Its objective is to further the use of responsive load as a bulk power system reliability resource in providing the fastest and most valuable ancillary services.

  11. Reliability-Based Optimization Using Evolutionary Algorithms

    E-Print Network [OSTI]

    Deb, Kalyanmoy

    Uncertainties in design variables and problem parameters are often inevitable and must be considered in an optimization task if reliable optimal solutions are sought. Besides a number of sampling techniques, there exist ...

  12. Reliability Challenges for Solar Energy (Presentation)

    SciTech Connect (OSTI)

    Kurtz, S.

    2009-04-27T23:59:59.000Z

    PV industry can benefit from reliability testing experience of microelectronics industry . Si modules perform well in field; CdTe/CIGS must be sealed to moisture; CPV in product development stage.

  13. PV Module Reliability Research (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2013-06-01T23:59:59.000Z

    This National Center for Photovoltaics sheet describes the capabilities of its PV module reliability research. The scope and core competencies and capabilities are discussed and recent publications are listed.

  14. Photovoltaic Reliability and Engineering (Revised) (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-06-01T23:59:59.000Z

    Capabilities fact sheet for the National Center for Photovoltaics: Photovoltaic Reliability and Engineering. One-sided sheet that includes Scope, Core Competencies and Capabilities, and Contact/Web information.

  15. Reliability Issues for Photovoltaic Modules (Presentation)

    SciTech Connect (OSTI)

    Kurtz, S.

    2009-10-01T23:59:59.000Z

    Si modules good in field; new designs need reliability testing. CdTe & CIGS modules sensitive to moisture; carefully seal. CPV in product development stage; benefits from expertise in other industries.

  16. RELIABILITY IMPROVEMENT OF BART TRAIN CONTROL

    E-Print Network [OSTI]

    Turner, D.B.

    2011-01-01T23:59:59.000Z

    equipment to resolve equipment reliability problems must bereliability problems was seen to be a mandatory first step in improving equipmentreliability of the Bay Area Rapid Tran- sit district's vehicle-borne Automatic Train Control equipment.

  17. Improving Network Reliability: Analysis, Methodology, and Algorithms

    E-Print Network [OSTI]

    Booker, Graham B.

    2010-07-14T23:59:59.000Z

    The reliability of networking and communication systems is vital for the nation's economy and security. Optical and cellular networks have become a critical infrastructure and are indispensable in emergency situations. This dissertation outlines...

  18. TOWARDS RELIABLE STOCHASTIC DATA-DRIVEN MODELS APPLIED TO THE ENERGY SAVING IN

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    on Cleantech for Smart Cities & Buildings from Nano to Urban Scale (CISBAT 2013), Lausanne : Suisse (2013)" #12TOWARDS RELIABLE STOCHASTIC DATA-DRIVEN MODELS APPLIED TO THE ENERGY SAVING IN BUILDINGS A.Ridi1 at the elaboration of Information Systems able to optimize energy consumption in buildings while preserving human

  19. o secure a safe, reliable and low-carbon energy future, we must alter

    E-Print Network [OSTI]

    Kammen, Daniel M.

    T o secure a safe, reliable and low- carbon energy future, we must alter both technologies and human behav- iour1 . The US Department of Energy notes2 that supply and demand is "affected as much-makers continue to focus on only one side of the energy dilemma. In the United States

  20. High-performance, high-reliability tape storage for midrange and server-based environments

    E-Print Network [OSTI]

    operations can take advan- tage of lower cost tape storage. With an industry-leading design that enables repetitive handling by automated pickers or human operators, thus protecting the tape from the physical, provide unparalleled time-to-data levels and reliability. Magstar MP Fast Access Linear Tape family

  1. Reliability Estimates for Power Supplies

    SciTech Connect (OSTI)

    Lee C. Cadwallader; Peter I. Petersen

    2005-09-01T23:59:59.000Z

    Failure rates for large power supplies at a fusion facility are critical knowledge needed to estimate availability of the facility or to set priorties for repairs and spare components. A study of the "failure to operate on demand" and "failure to continue to operate" failure rates has been performed for the large power supplies at DIII-D, which provide power to the magnet coils, the neutral beam injectors, the electron cyclotron heating systems, and the fast wave systems. When one of the power supplies fails to operate, the research program has to be either temporarily changed or halted. If one of the power supplies for the toroidal or ohmic heating coils fails, the operations have to be suspended or the research is continued at de-rated parameters until a repair is completed. If one of the power supplies used in the auxiliary plasma heating systems fails the research is often temporarily changed until a repair is completed. The power supplies are operated remotely and repairs are only performed when the power supplies are off line, so that failure of a power supply does not cause any risk to personnel. The DIII-D Trouble Report database was used to determine the number of power supply faults (over 1,700 reports), and tokamak annual operations data supplied the number of shots, operating times, and power supply usage for the DIII-D operating campaigns between mid-1987 and 2004. Where possible, these power supply failure rates from DIII-D will be compared to similar work that has been performed for the Joint European Torus equipment. These independent data sets support validation of the fusion-specific failure rate values.

  2. On the internet grouping for reliable multicasting

    E-Print Network [OSTI]

    Ghanem, Mohamed M.

    1996-01-01T23:59:59.000Z

    ON THE INTERNET GROUPING FOR RELIABLE MULTICASTING A Thesis by MOHAMED M. GHANEM Submitted to the Office of Graduate Studies of Texas ARM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE May 1996... Major Subject: Computer Science ON THF, INTERNET GROUPING I'OR RELIABLE MULTICASTING A Thesis by MOHAMED M. GHANEM Submitted to Texas ASM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved...

  3. Reliability and Functional Availability of HVAC Systems

    E-Print Network [OSTI]

    Myrefelt, S.

    2004-01-01T23:59:59.000Z

    RELIABILITY AND FUNCTIONAL AVAILABILITY OF HVAC SYSTEMS Sonny Myrefelt Dep. of Build. Serv. Eng., KTH, 10044 Stockholm, Sweden, and SKANSKA Sydost, V?xj?, Sweden Summary This paper presents a model to calculate the reliability... system, therefore, there must be sufficient documentation of design airflow rates. The compulsory ventilation checks performed in Sweden have focused on the importance of maintaining the design air flow rates. More about this activity can be seen...

  4. Gearbox Reliability Collaborative (GRC) Description and Loading

    SciTech Connect (OSTI)

    Oyague, F.

    2011-11-01T23:59:59.000Z

    This document describes simulated turbine load cases in accordance to the IEC 61400-1 Ed.3 standard, which is representative of the typical wind turbine design process. The information presented herein is intended to provide a broad understanding of the gearbox reliability collaborative 750kW drivetrain and turbine configuration. In addition, fatigue and ultimate strength drivetrain loads resulting from simulations are presented. This information provides the bases for the analytical work of the gearbox reliability collaborative effort.

  5. Optical fiber reliability implications of uncertainty in the fatigue crack growth model

    E-Print Network [OSTI]

    Matthewson, M. John

    Optical fiber reliability implications of uncertainty in the fatigue crack growth model G. M. Bubel University Fiber Optic Materials Research Program Ceramic Science and Engineering P.O. Box 909 Piscataway, furthermore, that such flaws can grow in time so that an initially intact silica optical fiber may undergo

  6. OG&E's Power Quality Program

    E-Print Network [OSTI]

    Davis, M.

    Our commitment to reliable electric power does not stop at the meter, but extends all the way to the equipment that it operates. Through the Power Quality Program, we provide professional power consultants to assure that the customer has quality...

  7. Measurement Practices for Reliability and Power Quality

    SciTech Connect (OSTI)

    Kueck, JD

    2005-05-06T23:59:59.000Z

    This report provides a distribution reliability measurement ''toolkit'' that is intended to be an asset to regulators, utilities and power users. The metrics and standards discussed range from simple reliability, to power quality, to the new blend of reliability and power quality analysis that is now developing. This report was sponsored by the Office of Electric Transmission and Distribution, U.S. Department of Energy (DOE). Inconsistencies presently exist in commonly agreed-upon practices for measuring the reliability of the distribution systems. However, efforts are being made by a number of organizations to develop solutions. In addition, there is growing interest in methods or standards for measuring power quality, and in defining power quality levels that are acceptable to various industries or user groups. The problems and solutions vary widely among geographic areas and among large investor-owned utilities, rural cooperatives, and municipal utilities; but there is still a great degree of commonality. Industry organizations such as the National Rural Electric Cooperative Association (NRECA), the Electric Power Research Institute (EPRI), the American Public Power Association (APPA), and the Institute of Electrical and Electronics Engineers (IEEE) have made tremendous strides in preparing self-assessment templates, optimization guides, diagnostic techniques, and better definitions of reliability and power quality measures. In addition, public utility commissions have developed codes and methods for assessing performance that consider local needs. There is considerable overlap among these various organizations, and we see real opportunity and value in sharing these methods, guides, and standards in this report. This report provides a ''toolkit'' containing synopses of noteworthy reliability measurement practices. The toolkit has been developed to address the interests of three groups: electric power users, utilities, and regulators. The report will also serve to support activities to develop and share information among industry and regulatory participants about critical resources and practices. The toolkit has been developed by investigating the status of indices and definitions, surveying utility organizations on information sharing, and preparing summaries of reliability standards and monitoring requirements--the issues, needs, work under way, existing standards, practices and guidelines--for the following three classifications: (1) terms and definitions of reliability; (2) power quality standards, guidelines, and measurements; and (3) activities and organizations developing and sharing information on distribution reliability. As these synopses of reliability measurement practices are provided, it must be noted that an economic penalty may be associated with requiring too high a reliability level from the distribution system for all customers. It may be appropriate for the distribution system to supply only some base, generally accepted level of reliability. This base level would be adequate for the majority of customers. Users who need a higher level may find it economical to supply using distributed energy resources (DER) and other local solutions to reliability and power quality needs. Local solutions implemented by the customer may be the most cost-effective method for addressing the more stringent needs of a digital economy. These local solutions include energy storage, small distributed generators, and microgrids. This report also considers the market's role in addressing reliability issues and requirements. The customer's needs are discussed in view of issues such as power quality requirements of digital electronic equipment, the cost of outages, the cost of storage and new infrastructure, and natural gas prices. The market role in addressing these issues and requirements is explored. The economic considerations associated with the reliability issues are discussed, as well as the levels at which these economic decisions could be made. Finally, a discussion is provided of the role DER could play in addressing

  8. Human Processing (Position Paper)

    E-Print Network [OSTI]

    Chang, Edward Y.

    and describe remaining challenges in the area (Section 6). 2. MOTIVATING EXAMPLE "Priam," the editor below, we explain how Priam might go about accomplishing this task. Figure 1: Basic Buyer human. The programmer (Priam) writes a normal program. 2. That program can, in the course of execution, create HTML

  9. Nondestructive Examination (NDE) Reliability for Inservice Inspection of Light Water Reactors. Semiannual report, April 1992--September 1992: Volume 16

    SciTech Connect (OSTI)

    Doctor, S.R.; Diaz, A.A.; Friley, J.R.; Greenwood, M.S.; Heasler, P.G.; Kurtz, R.J.; Simonen, F.A.; Spanner, J.C.; Vo, T.V. [Pacific Northwest Lab., Richland, WA (United States)

    1993-11-01T23:59:59.000Z

    The Evaluation and Improvement of NDE Reliability for Inservice inspection of Light Water Reactors (NDE Reliability) Program at the Pacific Northwest Laboratory was established by the Nuclear Regulatory Commission to determine the reliability of current inservice inspection (ISI) techniques and to develop recommendations that will ensure a suitably high inspection reliability. The objectives of this program include determining the reliability of ISI performed on the primary systems of commercial light-water reactors (LWRs);using probabilistic fracture mechanics analysis to determine the impact of NDE unreliability on system safety; and evaluating reliability improvements that can be achieved with improved and advanced technology. A final objective is to formulate recommended revisions to the Regulatory and ASME Code requirements, based on material properties, service conditions, and NDE uncertainties. The program scope is limited to ISI of the primary systems including the piping, vessel and other components inspected in accordance with Section XI of the ASME Code. This is a programs report covering the programmatic work from April 1992 through September 1992.

  10. Measuring eating disorder attitudes and behaviors: a reliability generalization study

    E-Print Network [OSTI]

    Pearson, Crystal Anne

    2009-05-15T23:59:59.000Z

    I used reliability generalization procedures to determine the mean score reliability of the Eating Disorder Inventory (EDI), the Eating Attitudes Test (EAT), and the Bulimia Test (BULIT). Reliability generalization is a type of meta-analysis used...

  11. Basic concepts defining the property of ''reliability'' for energy systems

    SciTech Connect (OSTI)

    Rudenko, Yu.N.; Sin'chugov, F.I.; Smirnov, E.P.

    1981-01-01T23:59:59.000Z

    The basic concepts defining the complex property of ''reliability'' for energy systems (electric-power and pipeline systems) are considered; they include the properties, states, and events that characterize reliability as well as the reliability indices.

  12. No Half Measures: Overcoming Common Challenges to Doing Digital Humanities in the Library

    E-Print Network [OSTI]

    Posner, Miriam

    2013-01-01T23:59:59.000Z

    described  their  libraries’  digital  humanities  support  Staffing  for  libraries’  digital  humanities  programs  August  19).  Digital  Humanities  in  the  Library  Isn’t  

  13. U.S. Department of Energy, Carlsbad Area Office quality assurance program document. Revision 1

    SciTech Connect (OSTI)

    NONE

    1996-04-01T23:59:59.000Z

    Mission of the Carlsbad Area Office (CAO) is to protect human health and the environment by opening and operating the Waste Isolation Pilot Plant (WIPP) for safe disposal of TRU waste, and establishing an effective system for management of TRU waste from generation to disposal. To help in fulfilling this mission and to ensure that risks and environmental impacts are identified and minimized, and that safety, reliability, and performance are optimized, CAO`s policy is to establish and maintain an effective quality assurance (QA) program that supports compliance with applicable Federal, State, and local regulations, and DOE orders and requirements. This document establishes QA program requirements for all programs, projects, and activities sponsored by CAO.

  14. Effect of Jatropha based Biodiesel, on Engine Hardware Reliability...

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

    Jatropha based Biodiesel, on Engine Hardware Reliability, Emission and Performance Effect of Jatropha based Biodiesel, on Engine Hardware Reliability, Emission and Performance...

  15. Office of Electricity Delivery & Energy Reliability FY 2012 Budget...

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

    & Energy Reliability FY 2012 Budget Request Presentation Office of Electricity Delivery & Energy Reliability FY 2012 Budget Request Presentation Presentation by Patricia Hoffman of...

  16. An environmental sample chamber for reliable scanning transmission...

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

    environmental sample chamber for reliable scanning transmission x-ray microscopy measurements under water vapor. An environmental sample chamber for reliable scanning transmission...

  17. Improving the Reliability and Resiliency of the US Electric Grid...

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

    Improving the Reliability and Resiliency of the US Electric Grid: SGIG Article in Metering International, March 2012 Improving the Reliability and Resiliency of the US Electric...

  18. The Business Case for Fuel Cells 2013: Reliability, Resiliency...

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

    3: Reliability, Resiliency & Savings The Business Case for Fuel Cells 2013: Reliability, Resiliency & Savings This report, compiled by Fuel Cells 2000 with support from the Fuel...

  19. Reliability of islanded microgrids with stochastic generation and prioritized load

    E-Print Network [OSTI]

    Marden, Mirjana Milosevic

    The potential to improve distribution system reliability is a primary motivation behind the development and deployment of microgrids. Previous studies have illustrated substantial reliability benefits of dispatchable ...

  20. Thermal Stress and Reliability for Advanced Power Electronics...

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

    Performance and Reliability of Bonded Interfaces Physics of Failure of Electrical Interconnects Thermal Stress and Reliability for Advanced Power Electronics and Electric Machines...

  1. Now Available: Smart Grid Investments Improve Grid Reliability...

    Energy Savers [EERE]

    Smart Grid Investments Improve Grid Reliability, Resilience, and Storm Responses (November 2014) Now Available: Smart Grid Investments Improve Grid Reliability, Resilience, and...

  2. Letter from Pepco Holdings Regarding the Reliability of Electric...

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

    from Pepco Holdings Regarding the Reliability of Electric Service in the District of Columbia Letter from Pepco Holdings Regarding the Reliability of Electric Service in the...

  3. 2006NIH Extramural Loan Repayment Programs FY 2006 U.S. Department of Health and Human Services National Institutes of Health www.lrp.nih.gov

    E-Print Network [OSTI]

    Bandettini, Peter A.

    Extramural Loan Repayment Programs FY 2006 Table of Contents The Year in Review 3 The Five Extramural Loan The Year in Review In Fiscal Year (FY) 2006, 3,200 individuals applied to the five Extramural Loan

  4. Software engineering practices for control system reliability

    SciTech Connect (OSTI)

    S. K. Schaffner; K. S White

    1999-04-01T23:59:59.000Z

    This paper will discuss software engineering practices used to improve Control System reliability. The authors begin with a brief discussion of the Software Engineering Institute's Capability Maturity Model (CMM) which is a framework for evaluating and improving key practices used to enhance software development and maintenance capabilities. The software engineering processes developed and used by the Controls Group at the Thomas Jefferson National Accelerator Facility (Jefferson Lab), using the Experimental Physics and Industrial Control System (EPICS) for accelerator control, are described. Examples are given of how their procedures have been used to minimized control system downtime and improve reliability. While their examples are primarily drawn from their experience with EPICS, these practices are equally applicable to any control system. Specific issues addressed include resource allocation, developing reliable software lifecycle processes and risk management.

  5. ASCE Specialty Conference on Probabilistic Mechanics and Structural Reliability ESTIMATING STRUCTURAL RELIABILITY UNDER HURRICANE WIND HAZARD

    E-Print Network [OSTI]

    Balaji, Rajagopalan

    STRUCTURAL RELIABILITY UNDER HURRICANE WIND HAZARD: APPLICATIONS TO WOOD STRUCTURES Balaji Rajagopalan.frangopol@colorado.edu Abstract A stochastic nonparametric framework to estimate structural reliability under hurricane wind Natural hazards in general and hurricanes in particular, lead to loss of life and tremendous property

  6. Accepted for publication in Reliability Engineering and System Safety Analyzing the topological, electrical and reliability

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Accepted for publication in Reliability Engineering and System Safety Analyzing the topological, electrical and reliability characteristics of a power transmission system for identifying its critical.zio@polimi.it Abstract The subject of this paper is the analysis of an electrical transmission system with the objective

  7. IEEE TRANSACTIONS ON POWER SYSTEMS, VOL 21,NO 3, AUGUST 2006 Reliability and Cost trade-off in Multi-Area

    E-Print Network [OSTI]

    1 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL 21,NO 3, AUGUST 2006 Reliability and Cost trade-area power systems. The objective is to obtain a suitable trade off between system reliability and cost-off in Multi-Area Power System Generation Expansion Using Dynamic Programming and Global Decomposition Panida

  8. The air transportation industry birthplace of reliability-centered maintenance

    SciTech Connect (OSTI)

    Matteson, T.D.

    1996-08-01T23:59:59.000Z

    The 1980s and 1970s provided a timely opportunity for examining and radically changing the process called {open_quotes}preventive maintenance{close_quotes} as it is applied to the aircraft used for scheduled air transportation. The Federal Aviation Administration and four major airlines, United, American, Pan American and Trans World, were the {open_quotes}principals{close_quotes} in that process. While United`s work with the FAA on the Boeing 737 had opened the door a crack, the Boeing 747 presented a major opportunity to radically improve the process for maintenance program design. That program was guided by the results of United`s analyses of failure data from operations of several fleets, each larger than 100 aircraft, and the concurrent experience of American, Pan American and Trans World. That knowledge provided the insights necessary to support an entirely different approach to maintenance program design. As a result, while United`s existing maintenance program required scheduled overhaul of 339 items on each DC-8, it required overhaul of only 8 items on the B-7471 Although the initial thrust of that work focused on components of active systems, there was concurrent work focused on items whose principal function was to carry the loads associated with operations. That program focused on the classification of structurally-significant items and their classification as {open_quotes}safe life{close_quotes} or {open_quotes}damage tolerant{close_quote} to determine what periodic replacements or repeated inspections were required. That work came to the attention of the Department of Defense which supported preparation of the book-length report by F. Stanley Nowlan and Howard F. Heap at United Airlines entitled {open_quote}Reliability-Centered maintenance{close_quotes}.

  9. Technique for Measuring Hybrid Electronic Component Reliability

    SciTech Connect (OSTI)

    Green, C.C.; Hernandez, C.L.; Hosking, F.M.; Robinson, D.; Rutherford, B.; Uribe, F.

    1999-01-01T23:59:59.000Z

    Materials compatibility studies of aged, engineered materials and hardware are critical to understanding and predicting component reliability, particularly for systems with extended stockpile life requirements. Nondestructive testing capabilities for component reliability would significantly enhance lifetime predictions. For example, if the detection of crack propagation through a solder joint can be demonstrated, this technique could be used to develop baseline information to statistically determine solder joint lifelengths. This report will investigate high frequency signal response techniques for nondestructively evaluating the electrical behavior of thick film hybrid transmission lines.

  10. Reliability Technology earns prestigious Los Alamos award

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Scienceand Requirements Recently ApprovedReliability Technology earns award Reliability Technology

  11. RELIABILITY CONSIDERATIONS OF ELECTRONICS COMPONENTS FOR THE DEEP UNDERWATER MUON AND NEUTRINO DETECTION SYSTEM

    E-Print Network [OSTI]

    Leskovar, B.

    2010-01-01T23:59:59.000Z

    1980 RELIABILITY CONSIDERATIONS OF ELECTRONICS COMPONENTS10548 RELIABILITY CONSIDERATIONS OF ELECTRONICS COMPONENTS™**"* ' Reliability Considerations of Electronics Components

  12. Nondestructive Examination (NDE) Reliability for Inservice Inspection of Light Water Reactors. Volume 14, Semiannual report, April 1991--September 1991

    SciTech Connect (OSTI)

    Doctor, S.R.; Diaz, A.A.; Friley, J.R.; Good, M.S.; Greenwood, M.S.; Heasler, P.G.; Hockey, R.L.; Kurtz, R.J.; Simonen, F.A.; Spanner, J.C.; Taylor, T.T.; Vo, T.V. [Pacific Northwest Lab., Richland, WA (United States)

    1992-07-01T23:59:59.000Z

    The Evaluation and Improvement of NDE Reliability for Inservice Inspection of Light Water Reactors (NDE Reliability) Program at the Pacific Northwest Laboratory was established by the Nuclear Regulatory Commission to determine the reliability of current inservice inspection (ISI) techniques and to develop recommendations that will ensure a suitably high inspection reliability. The objectives of this program include determining the reliability of ISI performed on the primary systems of commercial light-water reactors (LWR`s); using probabilistic fracture mechanics analysis to determine the impact of NDE unreliability on system safety; and evaluating reliability improvements that can be achieved with improved and advanced technology. A final objective is to formulate recommended revisions to the Regulatory and ASME Code requirements, based on material properties, service conditions, and NDE uncertainties. The program scope is limited to ISI of the primary systems including the piping, vessel, and other components inspected in accordance with Section XI of the ASME Code. This is a progress report covering the programmatic work from April 1991 through September 1991.

  13. Nondestructive Examination (NDE) Reliability for Inservice Inspection of Light Water Reactors. Volume 15, Semiannual report: October 1991--March 1992

    SciTech Connect (OSTI)

    Doctor, S.R.; Diaz, A.A.; Friley, J.R. [Pacific Northwest Lab., Richland, WA (United States)

    1993-09-01T23:59:59.000Z

    The Evaluation and Improvement of NDE Reliability for Inservice Inspection of Light Water Reactors (NDE Reliability) Program at the Pacific Northwest Laboratory was established by the Nuclear Regulatory Commission to determine the reliability of current inservice inspection (ISI) techniques and to develop recommendations that will ensure a suitably high inspection reliability. The objectives of this program include determining the reliability of ISI performed on the primary systems of commercial light-water reactors (LWRs); using probabilistic fracture mechanics analysis to determine the impact of NDE unreliability on system safety; and evaluating reliability improvements that can be achieved with improved and advanced technology. A final objective is to formulate recommended revisions to ASME Code and Regulatory requirements, based on material properties, service conditions, and NDE uncertainties. The program scope is limited to ISI of the primary systems including the piping, vessel, and other components inspected in accordance with Section XI of the ASME Code. This is a progress report covering the programmatic work from October 1991 through March 1992.

  14. On the reliability of seasonal forecasts Antje Weisheimer

    E-Print Network [OSTI]

    Stevenson, Paul

    to plant in the coming season #12;Antje Weisheimer EQUIP workshop 14 March 2013 Reliability of reliability #12;Antje Weisheimer EQUIP workshop 14 March 2013 category 5 Perfect reliability Uncertainty ranges do include perfect reliability slope #12;Antje Weisheimer EQUIP workshop

  15. A Hierarchical Model for Estimating the Reliability of Complex Systems

    E-Print Network [OSTI]

    Reese, Shane

    an approximation to the joint posterior distribution on the total system reliability was obtained. Many reliability or bounding moments of the system reliability posterior distribution (Cole (1975), Mastran (1976), DostalA Hierarchical Model for Estimating the Reliability of Complex Systems Valen E. Johnson, Todd L

  16. Interval Analysis and Reliability in Robotics

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    be highly reliable (i.e. for a robot used in surgical applications). The sources of uncertainties will restrict ourself in this paper to industrial robot. These type of robots have a base that is attached the mechanism motion). There are two main classes of industrial robots mechani- cal architecture: serial

  17. New correlation calculates reliable paraffin solubilities

    SciTech Connect (OSTI)

    Yaws, C.L.; Pan, X. (Lamar Univ., Beaumont, TX (US))

    1991-04-08T23:59:59.000Z

    A new correlation based on boiling point has been developed which accurately calculates paraffin solubilities in water. The correlation provides reliable solubility values down to very low concentrations (parts per million and less), for which the API correlation is not accurate. It can be used for initial engineering studies, including those involving health, safety, and environmental considerations.

  18. Implementing the Reliable Server Pooling Thomas Dreibholz

    E-Print Network [OSTI]

    Dreibholz, Thomas

    Implementing the Reliable Server Pooling Framework Thomas Dreibholz University of Duisburg Server Pooling (RSerPool) pro- tocol suite currently under standardization by the IETF is designed, configuring, accessing and monitoring pools of server resources. But RSerPool is not only able to manage pools

  19. Grid Reliability- An Electric Utility Company's Perspective

    Broader source: Energy.gov [DOE]

    Presentation—given at the Federal Utility Partnership Working Group (FUPWG) Fall 2008 meeting—covers Southern Company's business continuity, North American Electric Reliability Corporation (NERC) cybersecurity, and homeland security as well as physical recovery after a major outage, and five questions to ask your local utility.

  20. Y AND RELIABILITY: LOGO MANUAL COLOR SCHEME

    E-Print Network [OSTI]

    Bordenstein, Seth

    AND RELIABILITY: LOGO MANUAL COLOR SCHEME TYPOGRAPHY RECOMMENDED DISPLAY SPACE PMS 131C PMS COOL GRAY 11C VERSION HORIZONTAL 1J COLOR SCHEME R=203 G=163 B=57 C=21 M=34 Y=93 K=2 20,0 @Me Nas $10M in equipment Machine shop equipped conference facility All-purpose machine shop Skilled engineering staff

  1. Invited Paper GaN HEMT reliability

    E-Print Network [OSTI]

    del Alamo, Jesús A.

    Invited Paper GaN HEMT reliability J.A. del Alamo *, J. Joh Microsystems Technology Laboratories mechanism recently identified in GaN high-electron mobility transistors subject to electrical stress. Under high voltage, it has been found that electrically active defects are generated in the AlGaN barrier

  2. "Reliability, Resiliency, and Restoration for Smarter Grid

    E-Print Network [OSTI]

    Ohta, Shigemi

    "Reliability, Resiliency, and Restoration for Smarter Grid Workshop" Save the Date April 3 and 4 at mohlsen@bnl.gov "The Resilient Smart Grid" to be held at Brookhaven National Laboratory Upton, Long Island://www.bnl.gov/maps/. This is the 5th workshop that BNL is hosting on the Smart Grid. This Workshop will build on the previous

  3. Development of a maintenance program

    SciTech Connect (OSTI)

    Walker, I.

    1987-01-01T23:59:59.000Z

    Bruce Nuclear Generating Station (NGS) A in Tiverton, Ontario, has been operating for 10 yr. One reason for its successful operating record is the development of an effective preventive maintenance program. Evaluation of the existing preventive program included a review of maintenance of selected key equipment over the life of the station. The review emphasized the need to improve the storage and sorting of maintenance information for trend and cost analysis, manpower planning, reliability, and radiation dose calculations.

  4. How much do electric customers want to pay for reliability; New evidence on an old controversy

    SciTech Connect (OSTI)

    Woo, C.K. (Dept. of Economics and Finance, City Polytechnic of Hong Kong, 83 Tat Chee Ave., Kowloon (HK)); Pupp, R.L. (Quantitative Solutions, San Francisco, CA (US)); Flaim, T.; Mango, R. (Niagara Mohawk Power Corp., Syracuse, NY (US))

    1991-01-01T23:59:59.000Z

    Electric utilities are facing competitive challenges from independent power producers, cogenerators, qualifying facilities, and customer bypass, in addition to increasing resistance to building new capacity whether it be conventional or nuclear. Utilities are meeting these challenges by offering an array of demand-side management programs and differentiated tariffs that better match utility rates and customer preferences for service reliability. Customer preferences for service reliability may be gathered by market survey, however, survey estimates are subject to various common criticisms a fact that has retarded the adoption of this approach. by using power survey design techniques and statistical methods, the authors show in this paper, how accurate customer value of service reliability data may be collected with a market survey.

  5. Structural Reliability: Assessing the Condition and Reliability of Casing in Compacting Reservoirs

    E-Print Network [OSTI]

    Chantose, Prasongsit

    2012-02-14T23:59:59.000Z

    . Effective stress may exceed rock compressive strength, inducing compaction. Wells in compacting reservoirs risk high failure and deformation rates. This project introduces the concept of structural reliability to quantify casing failure risks in compacting...

  6. Sandia National Laboratories: PV Systems Reliability

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

    Generator Modeling Radar Friendly Blades Special Programs Techno-Economic Modeling, Analysis, and Support Analysis, Modeling, Cost of Energy, and Policy Impact: Wind Vision 2014...

  7. Sandia National Laboratories: PV Reliability & Performance Model

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

    Generator Modeling Radar Friendly Blades Special Programs Techno-Economic Modeling, Analysis, and Support Analysis, Modeling, Cost of Energy, and Policy Impact: Wind Vision 2014...

  8. Sandia National Laboratories: Blade Reliability Collaborative

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

    Generator Modeling Radar Friendly Blades Special Programs Techno-Economic Modeling, Analysis, and Support Analysis, Modeling, Cost of Energy, and Policy Impact: Wind Vision 2014...

  9. Sandia National Laboratories: Continuous Reliability Enhancement...

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

    Biofuels Biofuels Publications Biochemical Conversion Program Lignocellulosic Biomass Microalgae Thermochemical Conversion Sign up for our E-Newsletter Required.gif?3.21 Email...

  10. Sandia National Laboratories: 2013 Inverter Reliability Workshop

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

    Biofuels Biofuels Publications Biochemical Conversion Program Lignocellulosic Biomass Microalgae Thermochemical Conversion Sign up for our E-Newsletter Required.gif?3.21 Email...

  11. Reliability Estimation for Double Containment Piping

    SciTech Connect (OSTI)

    L. Cadwallader; T. Pinna

    2012-08-01T23:59:59.000Z

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

  12. Electronic logic for enhanced switch reliability

    DOE Patents [OSTI]

    Cooper, J.A.

    1984-01-20T23:59:59.000Z

    A logic circuit is used to enhance redundant switch reliability. Two or more switches are monitored for logical high or low output. The output for the logic circuit produces a redundant and fail-safe representation of the switch outputs. When both switch outputs are high, the output is high. Similarly, when both switch outputs are low, the logic circuit's output is low. When the output states of the two switches do not agree, the circuit resolves the conflict by memorizing the last output state which both switches were simultaneously in and produces the logical complement of this output state. Thus, the logic circuit of the present invention allows the redundant switches to be treated as if they were in parallel when the switches are open and as if they were in series when the switches are closed. A failsafe system having maximum reliability is thereby produced.

  13. The Lightswitch Wizard -- reliable daylight simulations

    E-Print Network [OSTI]

    For Initial Design; C. F. Morrison; M. Dubrous; C. F. Reinhart ?; M. Morrison; F. Dubrous

    A web-based, non-expert daylighting analysis tool has been developed to support daylighting-related design decisions in peripheral private offices during an early design stage (http://buildwiz.com). The tool offers a comparative, reliable, and fast analysis of the annual amount of daylight in the offices (daylight factor and daylight autonomy) and the lighting energy performance of automated lighting controls (occupancy sensors, photocells) compared to standard on/off switches. Blinds are either manually or automatically controlled.

  14. Euclid Programming

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

    Programming Programming Compiling and linking programs on Euclid. Compiling Codes How to compile and link MPI codes on Euclid. Read More Using the ACML Math Library How to...

  15. Training Program Graduates Weatherization-Ready Workers

    Broader source: Energy.gov [DOE]

    Graduates of Human Capital Development Corporation's (HCDC) First Choice Program aren't just trained in areas of construction, they also can tackle home weatherization services.

  16. Extending the human controller methodology in systems- Theoretic Process Analysis (STPA)

    E-Print Network [OSTI]

    Thornberry. Cameron L. (Cameron Louis)

    2014-01-01T23:59:59.000Z

    Traditional hazard analysis techniques are grounded in reliability theory and analyze the human controller-if at all-in terms of estimated or calculated probabilities of failure. Characterizing sub-optimal human performance ...

  17. Title and author(s) Notes on Human Error Analysis and

    E-Print Network [OSTI]

    calibration and testing as found in the US Licensee Event Reports. Available on request from Risø Library JUDGEMENT 4 "HUMAN ERROR" - DEFINITION AND CLASSIFICATION 6 RELIABILITY AND SAFETY ANALYSIS 10 HUMAN FACTORS

  18. On the evaluation of human error probabilities for post-initiating events

    E-Print Network [OSTI]

    Presley, Mary R

    2006-01-01T23:59:59.000Z

    Quantification of human error probabilities (HEPs) for the purpose of human reliability assessment (HRA) is very complex. Because of this complexity, the state of the art includes a variety of HRA models, each with its own ...

  19. Conditional Reliability, Sub-Monthly Time Step, Flood Control, and Salinity Features of WRAP

    E-Print Network [OSTI]

    Salazar, A.A.; Olmos, H.E.; Hoffpauir, R.J.; Wurbs, R.A.

    .................................................................... 9 2.1 Conditional Reliability CR Record ................................................................................. 14 2.2 Beginning of SIM Output CRM File for the CRM Example .......................................... 25 2.3 TABLES Input... record field 9 to provide beginning reservoir storage for program SALT and TABLES 5CR2 record routines root1.SUB SIMD sub-monthly time step simulation results root1.FFA SIMD flood frequency analysis file with annual series of peak flow and storage...

  20. Updating Human Factors Engineering Guidelines for Conducting Safety Reviews of Nuclear Power Plants

    SciTech Connect (OSTI)

    O, J.M.; Higgins, J.; Stephen Fleger - NRC

    2011-09-19T23:59:59.000Z

    The U.S. Nuclear Regulatory Commission (NRC) reviews the human factors engineering (HFE) programs of applicants for nuclear power plant construction permits, operating licenses, standard design certifications, and combined operating licenses. The purpose of these safety reviews is to help ensure that personnel performance and reliability are appropriately supported. Detailed design review procedures and guidance for the evaluations is provided in three key documents: the Standard Review Plan (NUREG-0800), the HFE Program Review Model (NUREG-0711), and the Human-System Interface Design Review Guidelines (NUREG-0700). These documents were last revised in 2007, 2004 and 2002, respectively. The NRC is committed to the periodic update and improvement of the guidance to ensure that it remains a state-of-the-art design evaluation tool. To this end, the NRC is updating its guidance to stay current with recent research on human performance, advances in HFE methods and tools, and new technology being employed in plant and control room design. This paper describes the role of HFE guidelines in the safety review process and the content of the key HFE guidelines used. Then we will present the methodology used to develop HFE guidance and update these documents, and describe the current status of the update program.

  1. Student Internship Programs Program Description

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

    Student Internship Programs Program Description The objective of the Laboratory's student internship programs is to provide students with opportunities for meaningful hands- on...

  2. Playas Grid Reliability and Distributed Energy Research

    SciTech Connect (OSTI)

    Romero, Van; Weinkauf, Don; Khan, Mushtaq; Helgeson, Wes; Weedeward, Kevin; LeClerc, Corey; Fuierer, Paul

    2012-06-30T23:59:59.000Z

    The future looks bright for solar and renewable energies in the United States. Recent studies claim that by 2050, solar power could supply a third of all electricity demand in the country’s western states. Technology advances, soft policy changes, and increased energy consciousness will all have to happen to achieve this goal. But the larger question is, what would it take to do more throughout the United States? The studies tie future solar and renewable growth in the United States to programs that aim to lower the soft costs of solar adoption, streamline utility interconnections, and increase technology advances through research and development. At the state and local levels, the most important steps are: • Net metering: Net metering policies lets customers offset their electric bills with onsite solar and receive reliable and fair compensation for the excess electricity they provide to the grid. Not surprisingly, what utilities consider fair is not necessarily a rate that’s favorable to solar customers. • Renewable portfolio standards (RPS): RPS policies require utilities to provide a certain amount of their power from renewable sources; some set specific targets for solar and other renewables. California’s aggressive RPS1 of 33% renewable energy by 2020 is not bankrupting the state, or its residents. • Strong statewide interconnection policies: Solar projects can experience significant delays and hassles just to get connected to the grid. Streamlined feasibility and impact analysis are needed. Good interconnection policies are crucial to the success of solar or renewable energy development. • Financing options: Financing is often the biggest obstacle to solar adoption. Those obstacles can be surmounted with policies that support creative financing options like third-party ownership (TPO) and property assessed clean energy (PACE). Attesting to the significance of TPO is the fact that in Arizona, it accounted for 86% of all residential photovoltaic (PV) installations in Q1 20132. Policies beyond those at the state level are also important for solar. The federal government must play a role including continuation of the federal Investment tax credit,3 responsible development of solar resources on public lands, and support for research and development (R&D) to reduce the cost of solar and help incorporate large amounts of solar into the grid. The local level can’t be ignored. Local governments should support: solar rights laws, feed-in tariffs (FITs), and solar-friendly zoning rules. A great example of how effective local policies can be is a city like Gainesville, Florida4, whose FIT policy has put it on the map as a solar leader. This is particularly noteworthy because the Sunshine State does not appear anywhere on the list of top solar states, despite its abundant solar resource. Lancaster, California5, began by streamlining the solar permitting process and now requires solar on every new home. Cities like these point to the power of local policies, and the ability of local governments to get things done. A conspicuously absent policy is Community Choice energy6, also called community choice aggregation (CCA). This model allows local governments to pool residential, business, and municipal electricity loads and to purchase or generate on their behalf. It provides rate stability and savings and allows more consumer choice and local control. The model need not be focused on clean energy, but it has been in California, where Marin Clean Energy7, the first CCA in California, was enabled by a state law -- highlighting the interplay of state and local action. Basic net metering8 has been getting a lot of attention. Utilities are attacking it9 in a number of states, claiming it’s unfair to ratepayers who don’t go solar. On the other hand, proponents of net metering say utilities’ fighting stance is driven by worries about their bottom line, not concern for their customers. Studies in California10, Vermont11, New York12, and Texas13 have found that the benefits of net metering (like savings on investments

  3. In-Plant Reliability Data base for nuclear plant components. Interim report: diesel generators, batteries, chargers and inverters

    SciTech Connect (OSTI)

    Kahl, W.K.; Borkowski, R.J.

    1985-01-01T23:59:59.000Z

    The objective of the In-Plant Reliability Data (IPRD) program is to develop a comprehensive, component-specific reliability data base for probabilistic risk assessment and for other statistical analyses relevant to component reliability evaluations. This document is the product of a pilot study that was undertaken to demonstrate the methodology and feasibility of applying IPRDS techniques to develop and analyze the reliability characteristics of key electrical components in five nuclear power plants. These electrical components include diesel generators, batteries, battery chargers and inverters. The sources used to develop the data base and produce the component failure rates and mean repair times were the plant equipment lists, plant drawings, maintenance work requests, Final Safety Analysis Reports (FSARs), and interviews with plant personnel. The data spanned approximately 33 reactor-years of commercial operation.

  4. Reliability Evaluation of Electric Power Generation Systems with Solar Power 

    E-Print Network [OSTI]

    Samadi, Saeed

    2013-11-08T23:59:59.000Z

    reliability evaluation of generation systems including Photovoltaic (PV) and Concentrated Solar Power (CSP) plants. Unit models of PV and CSP are developed first, and then generation system model is constructed to evaluate the reliability of generation systems...

  5. ORNL/TM-2004/91 MEASUREMENT PRACTICES FOR RELIABILITY

    E-Print Network [OSTI]

    Oak Ridge National Laboratory

    ................................................................................... 4 4. Loss of Load Probability: A Historical Perspective ................................................................................. 8 6. Pitfalls in Methods for Reliability Index Calculation............................................................ 27 C. Activities and Organizations Developing and Sharing Information on Reliability and Power

  6. Reliability as a measure of transportation system performance

    E-Print Network [OSTI]

    Jackson, Dena Delise

    2000-01-01T23:59:59.000Z

    This investigation involved a comparative analysis to assess the quantitative and qualitative characteristics of seven previously proposed methods of measuring travel time reliability. For each method, reliability was calculated using a l2-week...

  7. Gearbox Reliability Collaborative - Phase 1 and 2 Overview (Presentation)

    SciTech Connect (OSTI)

    Link, H.

    2011-08-01T23:59:59.000Z

    The presentation given at the Wind Turbine Reliability Workshop at Sandia National Laboratories, August 2-3, 2011, serves as an overview for the findings from the Gearbox Reliability Collaborative Project Report: Findings from Phase 1 and Phase 2 Testing

  8. Reliability of the generation supply in an interconnected power system

    E-Print Network [OSTI]

    Holditch, Damon Will

    1967-01-01T23:59:59.000Z

    method of calculating generation supply reliability was first described by Calabrese. This method has been expanded and refined by numerous other authors. The reliability figure of meri. t usually calculated using Calabrese's method is called loss...

  9. Ensuring the Availability and Reliability of Urea Dosing For...

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

    Ensuring the Availability and Reliability of Urea Dosing For On-Road and Non-Road Ensuring the Availability and Reliability of Urea Dosing For On-Road and Non-Road 2003 DEER...

  10. Energy Department Invests Over $10 Million to Improve Grid Reliability...

    Energy Savers [EERE]

    10 Million to Improve Grid Reliability and Resiliency Energy Department Invests Over 10 Million to Improve Grid Reliability and Resiliency June 11, 2014 - 6:20pm Addthis NEWS...

  11. Composite System based Multi-Area Reliability Evaluation

    E-Print Network [OSTI]

    Nagarajan, Ramya

    2011-02-22T23:59:59.000Z

    of such systems. Multi - area reliability evaluation is typically done by considering equivalent tie lines between different areas in an integrated power system. It gives approximate results for the reliability indices of a power system as it models each...

  12. Human factors review for Severe Accident Sequence Analysis (SASA)

    SciTech Connect (OSTI)

    Krois, P.A.; Haas, P.M.; Manning, J.J.; Bovell, C.R.

    1984-01-01T23:59:59.000Z

    The paper will discuss work being conducted during this human factors review including: (1) support of the Severe Accident Sequence Analysis (SASA) Program based on an assessment of operator actions, and (2) development of a descriptive model of operator severe accident management. Research by SASA analysts on the Browns Ferry Unit One (BF1) anticipated transient without scram (ATWS) was supported through a concurrent assessment of operator performance to demonstrate contributions to SASA analyses from human factors data and methods. A descriptive model was developed called the Function Oriented Accident Management (FOAM) model, which serves as a structure for bridging human factors, operations, and engineering expertise and which is useful for identifying needs/deficiencies in the area of accident management. The assessment of human factors issues related to ATWS required extensive coordination with SASA analysts. The analysis was consolidated primarily to six operator actions identified in the Emergency Procedure Guidelines (EPGs) as being the most critical to the accident sequence. These actions were assessed through simulator exercises, qualitative reviews, and quantitative human reliability analyses. The FOAM descriptive model assumes as a starting point that multiple operator/system failures exceed the scope of procedures and necessitates a knowledge-based emergency response by the operators. The FOAM model provides a functionally-oriented structure for assembling human factors, operations, and engineering data and expertise into operator guidance for unconventional emergency responses to mitigate severe accident progression and avoid/minimize core degradation. Operators must also respond to potential radiological release beyond plant protective barriers. Research needs in accident management and potential uses of the FOAM model are described. 11 references, 1 figure.

  13. RELIABILITY PLANNING IN DISTRIBUTED ELECTRIC ENERGY SYSTEMS

    E-Print Network [OSTI]

    Kahn, E.

    2011-01-01T23:59:59.000Z

    Wind Energy Statistics for Large Arrays of Wind Turbines (wind energy program is based on such a design Therefore Justus, for example, has found that a is cubic, wind turbine

  14. Final report on reliability and lifetime prediction.

    SciTech Connect (OSTI)

    Gillen, Kenneth Todd; Wise, Jonathan; Jones, Gary D.; Causa, Al G. [Goodyear Tire and Rubber Co., Akron, OH; Terrill, Edward R. [Goodyear Tire and Rubber Co., Akron, OH; Borowczak, Marc [Goodyear Tire and Rubber Co., Akron, OH

    2012-12-01T23:59:59.000Z

    This document highlights the important results obtained from the subtask of the Goodyear CRADA devoted to better understanding reliability of tires and to developing better lifetime prediction methods. The overall objective was to establish the chemical and physical basis for the degradation of tires using standard as well as unique models and experimental techniques. Of particular interest was the potential application of our unique modulus profiling apparatus for assessing tire properties and for following tire degradation. During the course of this complex investigation, extensive relevant information was generated, including experimental results, data analyses and development of models and instruments. Detailed descriptions of the findings are included in this report.

  15. Granite Reliable Power | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to: navigation, search OpenEI ReferenceJump to: navigation,II Wind Farm JumpReliable Power Jump

  16. Microsoft Word - Pv Reliability Paper.doc

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHighandSWPA / SPRA / USACE LMI-EFRCAddendumNo. 1 Contract0 1RELIABILITY AND

  17. Consortium for Electric Reliability Technology Solutions Grid of the Future White Paper on Review of Recent Reliability Issues and Systems Events

    SciTech Connect (OSTI)

    Hauer, John F.; Dagle, Jeffery E.

    1999-12-01T23:59:59.000Z

    This report is one of six reports developed under the U.S. Department of Energy (DOE) program in Power System Integration and Reliability (PSIR). The objective of this report is to review, analyze, and evaluate critical reliability issues demonstrated by recent disturbance events in the North America power system. Eleven major disturbances are examined, most occurring in this decade. The strategic challenge is that the pattern of technical need has persisted for a long period of time. For more than a decade, anticipation of market deregulation has been a major disincentive to new investments in system capacity. It has also inspired reduced maintenance of existing assets. A massive infusion of better technology is emerging as the final option to continue reliable electrical services. If an investment in better technology will not be made in a timely manner, then North America should plan its adjustments to a very different level of electrical service. It is apparent that technical operations staff among the utilities can be very effective at marshaling their forces in the immediate aftermath of a system emergency, and that serious disturbances often lead to improved mechanisms for coordinated operation. It is not at all apparent that such efforts can be sustained through voluntary reliability organizations in which utility personnel external to those organizations do most of the technical work. The eastern interconnection shows several situations in which much of the technical support has migrated from the utilities to the Independent System Operator (ISO), and the ISO staffs or shares staff with the regional reliability council. This process may be a natural and very positive consequence of utility restructuring. If so, the process should be expedited in regions where it is less advanced.

  18. Conversion of three-dimensional graphic building models into input data for building energy calculation program

    E-Print Network [OSTI]

    Hayek, Raja Fares

    1994-01-01T23:59:59.000Z

    the Reliability of the Translator . . DEVELOPMENT OF TRANSLATION PROGRAM Vl Vl1 1X Xl 13 17 17 18 18 18 19 20 CHAPTER The Modelling Pmgram . . Modelling Progratns Criteria for Selection of a Modelling Program Selection of a Modelling Program... APPENDICES . . APPENDIX I ELINK USER'S MANUAL II ELINK TUTORIAL III ADDITIONAL RELIABILITY TESTING RUNS IV ELINK PROGRAM LISTING VITA 60 60 61 64 65 67 69 70 81 91 96 133 LIST OF FIGURES FIGURE 1. Sequence of building project phases 2...

  19. Photovoltaic Module Reliability Workshop 2013: February 26-27, 2013

    SciTech Connect (OSTI)

    Kurtz, S.

    2013-10-01T23:59:59.000Z

    NREL's Photovoltaic (PV) Module Reliability Workshop (PVMRW) brings together PV reliability experts to share information, leading to the improvement of PV module reliability. Such improvement reduces the cost of solar electricity and promotes investor confidence in the technology--both critical goals for moving PV technologies deeper into the electricity marketplace.

  20. Photovoltaic Module Reliability Workshop 2010: February 18-19, 2010

    SciTech Connect (OSTI)

    Kurtz, J.

    2013-11-01T23:59:59.000Z

    NREL's Photovoltaic (PV) Module Reliability Workshop (PVMRW) brings together PV reliability experts to share information, leading to the improvement of PV module reliability. Such improvement reduces the cost of solar electricity and promotes investor confidence in the technology--both critical goals for moving PV technologies deeper into the electricity marketplace.

  1. Photovoltaic Module Reliability Workshop 2011: February 16-17, 2011

    SciTech Connect (OSTI)

    Kurtz, S.

    2013-11-01T23:59:59.000Z

    NREL's Photovoltaic (PV) Module Reliability Workshop (PVMRW) brings together PV reliability experts to share information, leading to the improvement of PV module reliability. Such improvement reduces the cost of solar electricity and promotes investor confidence in the technology--both critical goals for moving PV technologies deeper into the electricity marketplace.

  2. ELECTROMECHANICAL RELIABILITY TESTING OF THREE-AXIAL SILICON FORCE SENSORS

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , available automatic test equipment for integrated circuits (ICs) can be leveraged [2]. The reliabilityELECTROMECHANICAL RELIABILITY TESTING OF THREE-AXIAL SILICON FORCE SENSORS S. Spinner1,2, J the measurement results. 1. INTRODUCTION The reliability of microelectromechanical systems (MEMS) receives growing

  3. Design Strategy for a Formally Verified Reliable Computing Platform

    E-Print Network [OSTI]

    Butler, Ricky W.

    must demonstrate that these systems meet stringent reliability requirements. Flight critical components the manu­ facturing of electronic devices with failure rates low enough to meet the reliability of the system in the presence of component failures. The first task must therefore cal­ culate the reliability

  4. Photovoltaic Module Reliability Workshop 2014: February 25-26, 2014

    SciTech Connect (OSTI)

    Kurtz, S.

    2014-02-01T23:59:59.000Z

    NREL's Photovoltaic (PV) Module Reliability Workshop (PVMRW) brings together PV reliability experts to share information, leading to the improvement of PV module reliability. Such improvement reduces the cost of solar electricity and promotes investor confidence in the technology--both critical goals for moving PV technologies deeper into the electricity marketplace.

  5. Estimation of Photovoltaic System Reliability and Performance Metrics

    E-Print Network [OSTI]

    Liberzon, Daniel

    1 Estimation of Photovoltaic System Reliability and Performance Metrics Sairaj V. Dhople, Student reliability and perfor- mance analysis of grid-tied photovoltaic (PV) systems is for- mulated using Markov and energy yield, and reliability metrics such as availability. The paper also provides an analytical method

  6. Photovoltaic Module Reliability Workshop 2012: February 28 - March 1, 2012

    SciTech Connect (OSTI)

    Kurtz, S.

    2013-11-01T23:59:59.000Z

    NREL's Photovoltaic (PV) Module Reliability Workshop (PVMRW) brings together PV reliability experts to share information, leading to the improvement of PV module reliability. Such improvement reduces the cost of solar electricity and promotes investor confidence in the technology--both critical goals for moving PV technologies deeper into the electricity marketplace.

  7. Guest Editorial: Special Issue on Reliable Distributed Systems

    E-Print Network [OSTI]

    Firenze, Università degli Studi di

    Guest Editorial: Special Issue on Reliable Distributed Systems Shambhu J. Upadhyaya, Senior Member, designers, and implementers of distributed systems, with emphasis on system properties such as reliability with the 19th IEEE Symposium on Reliable Distributed Systems held at Nuernberg, Germany, 2000, but the topics

  8. Bayesian Networks and Evidence Theory to Model Complex Systems Reliability

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    , infrastructure of water distribution or electricity. The reliability studies of such systems are consequentlyBayesian Networks and Evidence Theory to Model Complex Systems Reliability Ch. SIMON, Ph. WEBER, E.levrat}@cran.uhp-nancy.fr Abstract-- This paper deals with the use of Bayesian Net- works to compute system reliability of complex

  9. Reactor Safety Research Programs

    SciTech Connect (OSTI)

    Edler, S. K.

    1981-07-01T23:59:59.000Z

    This document summarizes the work performed by Pacific Northwest Laboratory (PNL) from January 1 through March 31, 1981, for the Division of Reactor Safety Research within the U.S. Nuclear Regulatory Commission (NRC). Evaluations of nondestructive examination (NDE) techniques and instrumentation are reported; areas of investigation include demonstrating the feasibility of determining the strength of structural graphite, evaluating the feasibility of detecting and analyzing flaw growth in reactor pressure boundary systems, examining NDE reliability and probabilistic fracture mechanics, and assessing the integrity of pressurized water reactor (PWR) steam generator tubes where service-induced degradation has been indicated. Experimental data and analytical models are being provided to aid in decision-making regarding pipeto- pipe impacts following postulated breaks in high-energy fluid system piping. Core thermal models are being developed to provide better digital codes to compute the behavior of full-scale reactor systems under postulated accident conditions. Fuel assemblies and analytical support are being provided for experimental programs at other facilities. These programs include loss-ofcoolant accident (LOCA) simulation tests at the NRU reactor, Chalk River, Canada; fuel rod deformation, severe fuel damage, and postaccident coolability tests for the ESSOR reactor Super Sara Test Program, Ispra, Italy; the instrumented fuel assembly irradiation program at Halden, Norway; and experimental programs at the Power Burst Facility, Idaho National Engineering Laboratory (INEL). These programs will provide data for computer modeling of reactor system and fuel performance during various abnormal operating conditions.

  10. Reactor Safety Research Programs

    SciTech Connect (OSTI)

    Dotson, CW

    1980-08-01T23:59:59.000Z

    This document summarizes the work performed by Pacific Northwest laboratory from October 1 through December 31, 1979, for the Division of Reactor Safety Research within the Nuclear Regulatory Commission. Evaluation of nondestructive examination (NDE) techniques and instrumentation are reported; areas of investigation include demonstrating the feasibilty of determining structural graphite strength, evaluating the feasibilty of detecting and analyzing flaw growth in reactor pressure boundary systems, examining NDE reliability and probabilistic fracture mechanics, and assessing the remaining integrity of pressurized water reactor steam generator tubes where service-induced degradation has been indicated. Test assemblies and analytical support are being provided for experimental programs at other facilities. These programs include the loss-of-coolant accident simulation tests at the NRU reactor, Chalk River, Canada; the fuel rod deformation and post-accident coolability tests for the ESSOR Test Reactor Program, lspra, Italy; the blowdown and reflood tests in the test facility at Cadarache, France; the instrumented fuel assembly irradiation program at Halden, Norway; and the experimental programs at the Power Burst Facility, Idaho National Engineering Laboratory. These programs will provide data for computer modeling of reactor system and fuel performance during various abnormal operating conditions.

  11. Evaluation of Human Performance Issues for Fire Risk

    SciTech Connect (OSTI)

    Bley, Dennis C.; Cooper, Susan E.; Forester, John A.; Kolaczkowski, Alan M.; Ramey-Smith, Ann; Thompson, Catherine M.; Whitehead, Donnie W.; Wreathall, John

    1999-05-04T23:59:59.000Z

    This paper summarizes the current status of the treatment of human reliability in fire risk analyses for nuclear power plants and identifies areas that need to be addressed. A new approach is suggested to improve the modeling.

  12. Evaluation of human error probabilities for post-initiating events

    E-Print Network [OSTI]

    Dawson, Phillip Eng

    2007-01-01T23:59:59.000Z

    The United States Nuclear Regulatory Commission is responsible for the safe operation of the United States nuclear power plant fleet, and human reliability analysis forms an important portion of the probabilistic risk ...

  13. Program School/ Career: Descripton ISIS Program Codes

    E-Print Network [OSTI]

    Wisconsin at Madison, University of

    Program School/ Career: Descripton ISIS Program Codes Program Career: Descripton College School;Program School/ Career: Descripton ISIS Program Codes Program Career: Descripton College School/ College 1

  14. 227Poverty and Human Capability Studies Poverty AND HUMAN

    E-Print Network [OSTI]

    Dresden, Gregory

    227Poverty and Human Capability Studies Poverty AND HUMAN CAPABILIty StUDIeS (Pov) Core FACULty: PROFESSORS BeCKLey*, GOLDSMITH, MARGAND The Shepherd Program for the Interdisciplinary Study of Poverty studies can prepare them as future professionals and citizens to address the problems of poverty

  15. 237Poverty and Human Capability Studies Poverty and Human

    E-Print Network [OSTI]

    Dresden, Gregory

    237Poverty and Human Capability Studies Poverty and Human CaPability StudieS (Pov) Core FaCulty: PROFESSORS beCKley*, GOLDSMITH, MARGAND The Shepherd Program for the interdisciplinary Study of Poverty and graduate studies can prepare them as futureprofessionalsandcitizenstoaddresstheproblems of poverty and how

  16. Using wind plant data to increase reliability.

    SciTech Connect (OSTI)

    Peters, Valerie A. (Sandia National Laboratories, Livermore, CA); Ogilvie, Alistair B.; McKenney, Bridget L.

    2011-01-01T23:59:59.000Z

    Operators interested in improving reliability should begin with a focus on the performance of the wind plant as a whole. To then understand the factors which drive individual turbine performance, which together comprise the plant performance, it is necessary to track a number of key indicators. Analysis of these key indicators can reveal the type, frequency, and cause of failures and will also identify their contributions to overall plant performance. The ideal approach to using data to drive good decisions includes first determining which critical decisions can be based on data. When those required decisions are understood, then the analysis required to inform those decisions can be identified, and finally the data to be collected in support of those analyses can be determined. Once equipped with high-quality data and analysis capabilities, the key steps to data-based decision making for reliability improvements are to isolate possible improvements, select the improvements with largest return on investment (ROI), implement the selected improvements, and finally to track their impact.

  17. Real Time Grid Reliability Management 2005

    SciTech Connect (OSTI)

    Eto, Joe; Eto, Joe; Lesieutre, Bernard; Lewis, Nancy Jo; Parashar, Manu

    2008-07-07T23:59:59.000Z

    The increased need to manage California?s electricity grid in real time is a result of the ongoing transition from a system operated by vertically-integrated utilities serving native loads to one operated by an independent system operator supporting competitive energy markets. During this transition period, the traditional approach to reliability management -- construction of new transmission lines -- has not been pursued due to unresolved issues related to the financing and recovery of transmission project costs. In the absence of investments in new transmission infrastructure, the best strategy for managing reliability is to equip system operators with better real-time information about actual operating margins so that they can better understand and manage the risk of operating closer to the edge. A companion strategy is to address known deficiencies in offline modeling tools that are needed to ground the use of improved real-time tools. This project: (1) developed and conducted first-ever demonstrations of two prototype real-time software tools for voltage security assessment and phasor monitoring; and (2) prepared a scoping study on improving load and generator response models. Additional funding through two separate subsequent work authorizations has already been provided to build upon the work initiated in this project.

  18. Reliability of dynamic systems under limited information.

    SciTech Connect (OSTI)

    Field, Richard V., Jr. (.,; .); Grigoriu, Mircea

    2006-09-01T23:59:59.000Z

    A method is developed for reliability analysis of dynamic systems under limited information. The available information includes one or more samples of the system output; any known information on features of the output can be used if available. The method is based on the theory of non-Gaussian translation processes and is shown to be particularly suitable for problems of practical interest. For illustration, we apply the proposed method to a series of simple example problems and compare with results given by traditional statistical estimators in order to establish the accuracy of the method. It is demonstrated that the method delivers accurate results for the case of linear and nonlinear dynamic systems, and can be applied to analyze experimental data and/or mathematical model outputs. Two complex applications of direct interest to Sandia are also considered. First, we apply the proposed method to assess design reliability of a MEMS inertial switch. Second, we consider re-entry body (RB) component vibration response during normal re-entry, where the objective is to estimate the time-dependent probability of component failure. This last application is directly relevant to re-entry random vibration analysis at Sandia, and may provide insights on test-based and/or model-based qualification of weapon components for random vibration environments.

  19. Adhesion and Thin-Film Module Reliability

    SciTech Connect (OSTI)

    McMahon, T. J.; Jorgenson, G. J.

    2006-01-01T23:59:59.000Z

    Among the infrequently measured but essential properties for thin-film (T-F) module reliability are the interlayer adhesion and cohesion within a layer. These can be cell contact layers to glass, contact layers to the semiconductor, encapsulant to cell, glass, or backsheet, etc. We use an Instron mechanical testing unit to measure peel strengths at 90deg or 180deg and, in some cases, a scratch and tape pull test to evaluate inter-cell layer adhesion strengths. We present peel strength data for test specimens laminated from the three T-F technologies, before and after damp heat, and in one instance at elevated temperatures. On laminated T-F cell samples, failure can occur uniformly at any one of the many interfaces, or non-uniformly across the peel area at more than one interface. Some peel strengths are Lt1 N/mm. This is far below the normal ethylene vinyl acetate/glass interface values of >10 N/mm. We measure a wide range of adhesion strengths and suggest that adhesion measured under higher temperature and relative humidity conditions is more relevant for module reliability.

  20. Stochastic Methods in Reliability and Risk Management This volume focuses on stochastic methods developed for reliability modeling and risk

    E-Print Network [OSTI]

    Li, Haijun

    such as quantitative risk management, decision analysis under uncertainty, and their applications in areas methods developed for reliability modeling and risk analysis. Reliability theory and risk analysis have. This special volume highlights this convergence of reliability modeling and risk analysis, that forms the core

  1. On the possibility of using models of reliability theory for technical systems to investigate the reliability of energy systems

    SciTech Connect (OSTI)

    Rudenko, Yu.N.; Ushakov, I.A.

    1984-01-01T23:59:59.000Z

    Certain features of mathematical models of energy-system reliability are analyzed. Mathematical models employed in reliability theory for technical systems are considered together with the possibility of modifying them for use in the solution of problems associated with ensuring the reliability of energy systems.

  2. Section 1222 Program - Proposed Plains & Eastern Clean Line Project...

    Energy Savers [EERE]

    (DOE) Section 1222 Program is administered by the Office of Electricity Delivery and Energy Reliability (OE). 2. What Is the Process DOE will use to Review Applications Under the...

  3. ELECTRIC INFRASTRUCTURE TECHNOLOGY, TRAINING, AND ASSESSMENT PROGRAM

    SciTech Connect (OSTI)

    TREMEL, CHARLES L

    2007-06-28T23:59:59.000Z

    The objective of this Electric Infrastructure Technology, Training and Assessment Program was to enhance the reliability of electricity delivery through engineering integration of real-time technologies for wide-area applications enabling timely monitoring and management of grid operations. The technologies developed, integrated, tested and demonstrated will be incorporated into grid operations to assist in the implementation of performance-based protection/preventive measures into the existing electric utility infrastructure. This proactive approach will provide benefits of reduced cost and improved reliability over the typical schedule-based and as needed maintenance programs currently performed by utilities. Historically, utilities have relied on maintenance and inspection programs to diagnose equipment failures and have used the limited circuit isolation devices, such as distribution main circuit breakers to identify abnormal system performance. With respect to reliable problem identification, customer calls to utility service centers are often the sole means for utilities to identify problem occurrences and determine restoration methodologies. Furthermore, monitoring and control functions of equipment and circuits are lacking; thus preventing timely detection and response to customer outages. Finally, the two-way flow of real-time system information is deficient, depriving decision makers of key information required to effectively manage and control current electric grid demands to provide reliable customer service in abnormal situations. This Program focused on advancing technologies and the engineering integration required to incorporate them into the electric grid operations to enhance electrical system reliability and reduce utility operating costs.

  4. Report to Congress on stockpile reliability, weapon remanufacture, and the role of nuclear testing

    SciTech Connect (OSTI)

    Miller, G.H.; Brown, P.S.; Alonso, C.T.

    1987-10-01T23:59:59.000Z

    This report analyzes two issues: (1) ''whether past warhead reliability problems demonstrate that nuclear explosive testing is needed to identify or to correct stockpile reliability,'' or (2) ''whether a program of stockpile inspection, nonnuclear testing, and remanufacture would be sufficient to deal with stockpile reliability problems.'' Chapter 1 examines the reasons for nuclear testing. Although the thrust of the request from Congressman Aspin et al., has to do with the need for nuclear testing as it relates to stockpile reliability and remanufacture, there are other very important reasons for nuclear testing. Since there has been increasing interest in the US Congress for more restrictive nuclear test limits, we have addressed the overall need for nuclear testing and the potential impact of further nuclear test limitations. Chapter 1 also summarizes the major conclusions of a recent study conducted by the Scientific and Academic Advisory Committee (SAAC) for the President of the University of California; the SAAC report is entitled, ''Nuclear Weapon Tests: The Role of the University of California-Department of Energy Laboratories.'' Chapter 2 presents a brief history of stockpile problems that involved post-deployment nuclear testing for their resolution. Chapter 3 addresses the problems involved in remanufacturing nuclear weapons, and Chapter 4 discusses measures that should be taken to prepare for possible future restrictive test limits.

  5. Investigation of the Role of Trap States in Solar Cell Reliability using Photothermal Deflection Spectroscopy

    E-Print Network [OSTI]

    Bezryadina, Anna Sergeyevna

    2012-01-01T23:59:59.000Z

    of PV materials Reliability of photovoltaic materials isof photovoltaic (PV) technologies. PV reliability andPhotovoltaic’s Properties and Characterization .. 9 1.5. Degradation and Reliability

  6. RELIABILITY CONSIDERATIONS OF ELECTRONICS COMPONENTS FOR THE DEEP UNDERWATER MUON AND NEUTRINO DETECTION SYSTEM

    E-Print Network [OSTI]

    Leskovar, B.

    2010-01-01T23:59:59.000Z

    to the designer of high-reliability equipment and systems.HDBK-217B, Reliability Prediction of Electronic Equipment,217B-Reliability Prediction of Electronic Equipment provides

  7. Joint first-passage probability, and reliability of systems under Stochastic excitation

    E-Print Network [OSTI]

    Song, J; Kiureghian, A D

    2006-01-01T23:59:59.000Z

    and reliability of electrical substation equipment andthe reliability of a system of interconnected equipmentthe reliability of a system of inter- connected equipment

  8. Radioisotope thermoelectric generator reliability and safety

    SciTech Connect (OSTI)

    Campbell, R.; Klein, J.

    1989-01-01T23:59:59.000Z

    There are numerous occasions when a planetary mission requires energy in remote areas of the solar system. Anytime power is required much beyond Mars or the Asteroid Belts, solar power is not an option. The radioisotope thermoelectric generator (RTG) was developed for such a mission requirement. It is a relatively small and lightweight power source that can produce power under adverse conditions. Just this type of source has become the backbone of the power system for far outer plant exploration. Voyagers I and II are utilizing RTGs, which will soon power the Galileo spacecraft to Jupiter and the Ulysses spacecraft to study the solar poles. The paper discusses RTG operation including thermoelectric design, converter design, general-purpose heat source; RTG reliability including design, testing, experience, and launch approval; and RTG safety issues and methods of ensuring safety.

  9. Wind Power Reliability: Breaking Down a Barrier

    Broader source: Energy.gov [DOE]

    The steady increase of wind power on the grid presents new challenges for power system operators charged with making sure the grid stays up and running. "We need to ensure that we are going down a path that will lead to better reliability [with wind power]," said Bob Zavadil, an executive vice president at EnerNex Corporation in Knoxville, Tenn., a firm specializing in renewable energy grid interconnection and integration. "If this piece isn't done, there will be problems." EnerNex has spent the last decade perfecting wind turbine and plant models that test a wind plant's influence on the grid and its ability to provide grid support. In its latest effort, the company is using American Recovery and Reinvestment Act funds worth $750,000 to develop documentation and validations of computer wind turbine models.

  10. Reliable noninvasive measurement of blood gases

    DOE Patents [OSTI]

    Thomas, Edward V. (Albuquerque, NM); Robinson, Mark R. (Albuquerque, NM); Haaland, David M. (Albuquerque, NM); Alam, Mary K. (Cedar Crest, NM)

    1997-05-20T23:59:59.000Z

    This invention relates to methods and apparatus for, preferably, determining non-invasively and in vivo at least two of the five blood gas parameters (i.e., pH, [HCO.sub.3.sup.- ], PCO.sub.2, PO.sub.2, and O.sub.2 sat.) in a human.

  11. Arnold Schwarzenegger REAL-TIME GRID RELIABILITY

    E-Print Network [OSTI]

    Monitoring System (RTDMSTM) Manu Parashar & Jim Dyer Electric Power Group (EPG) RTDMS CA ISO TRAINING SESSION and decrease on sink generators). Transmission lines removed (forced or scheduled) from service between source Energy Research Program Prepared By: Lawrence Berkeley National Laboratory Consortium for Electric

  12. Sponsored Program Resources SPONSORED PROGRAMS

    E-Print Network [OSTI]

    Mather, Patrick T.

    Sponsored Program Resources - 1 - SPONSORED PROGRAMS Sponsored programs are research, instruction for sponsored programs is provided through an agreement between the sponsor and Syracuse University are being achieved and funds properly used Sponsored programs are managed by the Office of Sponsored

  13. Program Description

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

    Experience, is a unique educational program designed to introduce students in geophysics and related fields to "hands on" geophysical exploration and research. The program...

  14. Program Administration

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    1997-08-21T23:59:59.000Z

    This volume describes program administration that establishes and maintains effective organizational management and control of the emergency management program. Canceled by DOE G 151.1-3.

  15. Guessing human-chosen secrets

    E-Print Network [OSTI]

    Bonneau, Joseph

    2012-06-12T23:59:59.000Z

    number of third parties seeking to authenticate users [121, 244]. Reliable data on damages caused by weak human-chosen secrets is hard to come by [141], but a recent study of corporate data breaches commissioned by Verizon [12] suggested that nearly a... on Financial Cryptography and Data Security. Springer-Verlag, 2012 Some data on personal knowledge questions analysed in §7 was published in collaboration with Mike Just and Greg Matthews, who assisted in gathering government census records from around...

  16. Environmental Programs Environmental Programs Committee

    E-Print Network [OSTI]

    Richards-Kortum, Rebecca

    162 Environmental Programs Environmental Programs Committee Walter Whitfield Isle, Chair (English) Katherine Bennett Ensor (Statistics) Mark R. Wiesner (Civil and Environmental Engineering) Donald Ostdiek (Architecture) The Environmental Programs Committee coordinates courses and curricula on environmental topics

  17. Accessible programming using program synthesis

    E-Print Network [OSTI]

    Singh, Rishabh

    2014-01-01T23:59:59.000Z

    New computing platforms have greatly increased the demand for programmers, but learning to program remains a big challenge. Program synthesis techniques have the potential to revolutionize programming by making it more ...

  18. Thermal Performance and Reliability Characterization of Bonded Interface Materials (BIMs): Preprint

    SciTech Connect (OSTI)

    DeVoto, D.; Paret, P.; Mihalic, M.; Narumanchi, S.; Bar-Cohen, A.; Matin, K.

    2014-08-01T23:59:59.000Z

    Thermal interface materials are an important enabler for low thermal resistance and reliable electronics packaging for a wide array of applications. There is a trend towards bonded interface materials (BIMs) because of their potential for low thermal resistivity (< 1 mm2K/W). However, BIMs induce thermomechanical stresses in the package and can be prone to failures and integrity risks. Deteriorated interfaces can result in high thermal resistance in the package and degradation and/or failure of the electronics. DARPA's Thermal Management Technologies program has addressed this challenge, supporting the development of mechanically-compliant, low resistivity nano-thermal interface (NTI) materials. In this work, we describe the testing procedure and report the results of NREL's thermal performance and reliability characterization of an initial sample of four different NTI-BIMs.

  19. Load Response Fundamentally Matches Power System Reliability Requirements

    SciTech Connect (OSTI)

    Kirby, Brendan J [ORNL] [ORNL

    2007-01-01T23:59:59.000Z

    Responsive load is the most underutilized reliability resource available to the power system. Loads are frequently barred from providing the highest value and most critical reliability services; regulation and spinning reserve. Advances in communications and control technology now make it possible for some loads to provide both of these services. The limited storage incorporated in some loads better matches their response capabilities to the fast reliability-service markets than to the hourly energy markets. Responsive loads are frequently significantly faster and more accurate than generators, increasing power system reliability. Incorporating fast load response into microgrids further extends the reliability response capabilities that can be offered to the interconnected power system. The paper discusses the desired reliability responses, why this matches some loads' capabilities, what the advantages are for the power system, implications for communications and monitoring requirements, and how this resource can be exploited.

  20. College of Architecture, Arts and Humanities ARCHITECTURE,

    E-Print Network [OSTI]

    Stuart, Steven J.

    College of Architecture, Arts and Humanities COLLEGE OF ARCHITECTURE, ARTS AND HUMANITIES The College of Architecture, Arts and Humanities offers graduate programs in three schools: the School in Architecture; City and Regional Planning; Construction Science and Management; Digital Pro- duction Arts

  1. Human-System Safety Methods for Development of Advanced Air Traffic Management Systems

    SciTech Connect (OSTI)

    Nelson, W.R.

    1999-05-24T23:59:59.000Z

    The Idaho National Engineering and Environmental Laboratory (INEEL) is supporting the National Aeronautics and Space Administration in the development of advanced air traffic management (ATM) systems as part of the Advanced Air Transportation Technologies program. As part of this program INEEL conducted a survey of human-system safety methods that have been applied to complex technical systems, to identify lessons learned from these applications and provide recommendations for the development of advanced ATM systems. The domains that were surveyed included offshore oil and gas, commercial nuclear power, commercial aviation, and military. The survey showed that widely different approaches are used in these industries, and that the methods used range from very high-level, qualitative approaches to very detailed quantitative methods such as human reliability analysis (HRA) and probabilistic safety assessment (PSA). In addition, the industries varied widely in how effectively they incorporate human-system safety assessment in the design, development, and testing of complex technical systems. In spite of the lack of uniformity in the approaches and methods used, it was found that methods are available that can be combined and adapted to support the development of advanced air traffic management systems.

  2. Minimization of Life Cycle Costs Through Optimization of the Validation Program A Test Sample Size and Warranty Cost

    E-Print Network [OSTI]

    Sandborn, Peter

    Minimization of Life Cycle Costs Through Optimization of the Validation Program ­ A Test Sample Size and Warranty Cost Approach Andre Kleyner, Delphi Delco Electronics, Kokomo Peter Sandborn, Ph cycle cost, validation program, cost optimization, reliability cost curve, warranty, sample size

  3. 1992 annual report of the North American Electric Reliability Council

    SciTech Connect (OSTI)

    Not Available

    1992-01-01T23:59:59.000Z

    This report describes the operation and concerns of the North American Electric Reliability Council and contains contributions from each of its member regional councils concerning reliability of electric power in their representative areas. The topics of the reports include current and future electric system reliability, regional monitoring, planning, telecommunications, the generating availability data system, technical services available, installed capacity changes, equipment changes, unusual events, hurricane Andrew, and ice storms.

  4. Field Operations Program Activities Status Report

    SciTech Connect (OSTI)

    J. E. Francfort; D. V. O'Hara; L. A. Slezak

    1999-05-01T23:59:59.000Z

    The Field Operations Program is an electric vehicle testing and evaluation program sponsored by US Department of Energy and managed by the Idaho National Engineering and Environmental Laboratory. The Program's goals are to evaluate electric vehicles in real-world applications and environments, support electric vehicle technology advancement, develop infrastructure elements necessary to support significant electric vehicle use, support increased use of electric vehicles in federal fleets, and increase overall awareness and acceptance of electric vehicles. This report covers Program activities from fiscal year 1997 through mid-fiscal year 1999. The Field Operations Program succeeded the Site Operator Program, which ended in September 1996. Electric vehicle testing conducted by the Program includes baseline performance testing (EV America testing), accelerated reliability (life-cycle) testing, and fleet testing. The baseline performance parameters include accelerations, braking, range, energy efficiency, and charging time. The Program collects accelerated reliability and fleet operations data on electric vehicles operated by the Program's Qualified Vehicle Testing (QVT) partners. The Program's QVT partners have over 3 million miles of electric vehicle operating experience.

  5. NDE reliability through round robin testing

    SciTech Connect (OSTI)

    Fong, J.T.; Mordfin, L.; Hedden, O.F.; Bush, S.H.

    1986-01-01T23:59:59.000Z

    This book presents the papers given at a conference on the accuracy of nondestructive testing. Topics considered at the conference included the design of a round robin ultrasonic testing program for piping, new advances in nondestructive evaluation analysis, the statistical handling of the data, the requalification of ultrasonic testing inspectors for the detection of intergranular stress corrosion cracking in BWR plants, and an overview of round robin testing.

  6. OE's SGIG Program Featured in International Publication

    Broader source: Energy.gov [DOE]

    An article in the March 2012 issue of the quarterly publication Metering International focuses on DOE's Smart Grid Investment Grant program, highlighting how the program is improving the reliability and resiliency of the US electric grid. The article examines the need to protect the grid and the benefits of modernization, including reduced demand, increased capacity, and faster recovery. OE's Debbie Haught, who oversees the SGIG program, and Joseph Palladino, who leads the analysis of the program, authored the piece. Metering International provides information on trends and developments in the industry.

  7. Competition and Reliability in North American Energy Markets...

    Energy Savers [EERE]

    Issue Paper Synopses Jack Casazza, Frank Delea, and George Loehr argue that "deregulation and restructuring have had a devastating effect on the reliability of the North...

  8. Office of Electricity Delivery And Energy Reliability To Hold...

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

    Office of Electricity Delivery And Energy Reliability To Hold Technical Conference On The Design Of Future Electric Transmission Office of Electricity Delivery And Energy...

  9. applying software reliability: Topics by E-print Network

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

    12;The US Space Shuttle Feitelson, Dror 6 Aarhus Universitet Reliable Software and Architecture Computer Technologies and Information Sciences Websites Summary: Aarhus Universitet...

  10. Sandia Energy - Reliability, O&M, Standards Development

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

    and reduce performance risks and costs. With elements of reliability and performance engineering, this work can leverage the knowledge of DOE researchers and the results of...

  11. Imprecise reliability by evidential networks Christophe SIMON and Philippe WEBER

    E-Print Network [OSTI]

    Boyer, Edmond

    Imprecise reliability by evidential networks Christophe SIMON and Philippe WEBER October 3, 2008 to adequately tell variability from imprecision. Many representations exist C. Simon and Ph. Weber

  12. NREL Gearbox Reliability Collaborative Analysis Round Robin: Preprint

    SciTech Connect (OSTI)

    Oyague, F.; Butterfield, C. P.; Sheng, S.

    2009-05-01T23:59:59.000Z

    The Gearbox Reliability Collaborative is working to determine the causes and loading conditions that result in the premature failure of wind turbine gearboxes.

  13. Microsoft PowerPoint - Sandia Inverter Systemic Reliability Presentati...

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

    Copyright 2013, First Solar, Inc. 2 Topic Review * First Solar Plant & Location Overview * Overview of Reliability * Component Review * 'Soft' Failures Review Copyright 2013,...

  14. Power Electronics Reliability Kick Off Meeting ? Silicon Power...

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

    Validated Through Broad Use Boating Defense Machine Tool Wind Energy Semiconductors Health Care 2 Project Goals * Better understand the current and future reliability of...

  15. On the Reliability of System Identification: Applications of Bootstrap Theory

    E-Print Network [OSTI]

    Kareem, Ahsan

    1 On the Reliability of System Identification: Applications of Bootstrap Theory T. Kijewski & A of Notre Dame, Notre Dame, IN, USA Keywords: bootstrapping, system identification, Monte Carlo, damping

  16. advance capability reliability: Topics by E-print Network

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

    future employees with the strategic business objectives. Jussi Stader; Ann Macintosh 1999-01-01 48 PLPD: reliable protein localization prediction from imbalanced and overlapped...

  17. Sandia National Laboratories: assess PV system reliability issues

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

    system reliability issues Solar Regional Test Center in Vermont Achieves Milestone Installation On September 23, 2014, in Concentrating Solar Power, Energy, Facilities, National...

  18. Project Profile: Physics-Based Reliability Models for Supercritical...

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

    developed models to predict the reliability of hybrid gas bearing (HGB) and dry gas seal (DGS) components in the turboexpander of a supercritical CO2 turbine. The...

  19. architecture reliability analysis: Topics by E-print Network

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

    Henrik Brbak 4 Global methodology in control architecture to improve mobile robot reliability Physics Websites Summary: Global methodology in control architecture to...

  20. Gearbox Reliability Collaborative Experimental Data Overview & Analysis (Presentation)

    SciTech Connect (OSTI)

    Oyague, F.

    2010-05-01T23:59:59.000Z

    This presentation details how wind turbine gearboxes fail to meet 20-year design life and how the Gearbox Reliability Collaborative (GRC) is addressing the challenges.

  1. Thermal Stress and Reliability for Advanced Power Electronics...

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

    More Documents & Publications Thermal Stress and Reliability for Advanced Power Electronics and Electric Machines Power Electronic Thermal System Performance and Integration...

  2. Office of Electricity Delivery and Energy Reliability | Department...

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

    & Internships Funding Opportunities Information Center Contact Us Energy.gov Office of Electricity Delivery & Energy Reliability 1000 Independence Avenue, SW Washington, DC...

  3. Smart Grid: Creating Jobs while Delivering Reliable,Environmentally...

    Open Energy Info (EERE)

    Smart Grid: Creating Jobs while Delivering Reliable, Environmentally-friendly Energy Home > Groups > OpenEI Community Central Graham7781's picture Submitted by Graham7781(2017)...

  4. Electro-thermal-mechanical Simulation and Reliability for Plug...

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

    Peer Evaluation Meeting ape026hefner2012o.pdf More Documents & Publications Electro-thermal-mechanical Simulation and Reliability for Plug-in Vehicle Converters and Inverters...

  5. Sandia National Laboratories: very high solar energy reliability

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

    reliability ECIS-Princeton Power Systems, Inc.: Demand Response Inverter On March 19, 2013, in DETL, Distribution Grid Integration, Energy, Energy Surety, Facilities, Grid...

  6. Gearbox Reliability Collaborative Project Report: Findings from Phase 1 and Phase 2 Testing

    SciTech Connect (OSTI)

    Link, H.; LaCava, W.; van Dam, J.; McNiff, B.; Sheng, S.; Wallen, R.; McDade, M.; Lambert, S.; Butterfield, S.; Oyague, F.

    2011-06-01T23:59:59.000Z

    This report describes the Gearbox Reliability Collaborative's work at NREL to increase the reliability of wind turbine gearboxes.

  7. Computational Thermochemistry and Benchmarking of Reliable Methods

    SciTech Connect (OSTI)

    Feller, David F.; Dixon, David A.; Dunning, Thom H.; Dupuis, Michel; McClemore, Doug; Peterson, Kirk A.; Xantheas, Sotiris S.; Bernholdt, David E.; Windus, Theresa L.; Chalasinski, Grzegorz; Fosada, Rubicelia; Olguim, Jorge; Dobbs, Kerwin D.; Frurip, Donald; Stevens, Walter J.; Rondan, Nelson; Chase, Jared M.; Nichols, Jeffrey A.

    2006-06-20T23:59:59.000Z

    During the first and second years of the Computational Thermochemistry and Benchmarking of Reliable Methods project, we completed several studies using the parallel computing capabilities of the NWChem software and Molecular Science Computing Facility (MSCF), including large-scale density functional theory (DFT), second-order Moeller-Plesset (MP2) perturbation theory, and CCSD(T) calculations. During the third year, we continued to pursue the computational thermodynamic and benchmarking studies outlined in our proposal. With the issues affecting the robustness of the coupled cluster part of NWChem resolved, we pursued studies of the heats-of-formation of compounds containing 5 to 7 first- and/or second-row elements and approximately 10 to 14 hydrogens. The size of these systems, when combined with the large basis sets (cc-pVQZ and aug-cc-pVQZ) that are necessary for extrapolating to the complete basis set limit, creates a formidable computational challenge, for which NWChem on NWMPP1 is well suited.

  8. Programming Language Evolution and Source Code Rejuvenation

    E-Print Network [OSTI]

    Pirkelbauer, Peter Mathias

    2011-02-22T23:59:59.000Z

    entropy. In conjunction with extensions to programming languages, source code rejuvenation o ers an evolutionary trajectory towards more reliable, more secure, and better performing code. We describe the tools that allow us e cient implementations..., provision of specialized libraries, enhancements of programming techniques, experiments with analysis and design techniques, and implementation of development and analysis tools. The ubiquitous multi-core architectures o er performance bene ts...

  9. Nuclear Computerized Library for Assessing Reactor Reliability (NUCLARR). Version 3.5, Quick Reference Guide

    SciTech Connect (OSTI)

    Gilbert, B.G.; Richards, R.E.; Reece, W.J.; Gertman, D.I.

    1992-10-01T23:59:59.000Z

    This Reference Guide contains instructions on how to install and use Version 3.5 of the NRC-sponsored Nuclear Computerized Library for Assessing Reactor Reliability (NUCLARR). The NUCLARR data management system is contained in compressed files on the floppy diskettes that accompany this Reference Guide. NUCLARR is comprised of hardware component failure data (HCFD) and human error probability (HEP) data, both of which are available via a user-friendly, menu driven retrieval system. The data may be saved to a file in a format compatible with IRRAS 3.0 and commercially available statistical packages, or used to formulate log-plots and reports of data retrieval and aggregation findings.

  10. Layered and segmented system organization (LASSO) for highly reliable inventory monitoring systems (IMS)

    SciTech Connect (OSTI)

    Mangan, Dennis L.; Matter, John C.; Waddoups, I. (Ivan); Abhold, M. E. (Mark E.); Chiaro, P. (Peter)

    2002-01-01T23:59:59.000Z

    The Trilateral Initiative is preparing for International Atomic Energy Agency (LUiA) verification of excess fissile material released itom the defense programs of the United States and the Russian Federation. Following acceptance of the material using an Attribute Verification System, the IAEA will depend on an Inventory Monitoring System to maintain Continuity of Knowledge of the large inventory of thousands of items. Recovery fiom a total loss of Continuity of Knowledge in such a large storage facility would involve an extremely costly inventory re-verification This paper presents the framework for a Layered and Segmented System Organization that is the basis for a highly reliable IMS with protection-in-depth.

  11. Nuclear Decommissioning and Organisational Reliability: Involving Subcontractors in Collective Action

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Page 1 Nuclear Decommissioning and Organisational Reliability: Involving Subcontractors to the decommissioning. The use of subcontractors is not new; in the nuclear industry it became widespread in the 1990s reliability is at the heart of the safety of at-risk systems. Many studies have been conducted in the nuclear

  12. An Examination of Temporal Trends in Electricity Reliability Based on

    E-Print Network [OSTI]

    , national-scale information on the reliability of the U.S. electric power system is lacking. This report. In principle, comprehensive information on the actual reliability of the electric power system and on how January 2012 The work described in this report was funded by the Office of Electricity Delivery and Energy

  13. GPGPUs: How to Combine High Computational Power with High Reliability

    E-Print Network [OSTI]

    Gurumurthi, Sudhanva

    recent results derived from radiation experiments about the reliability of GPGPUs. Third, it describes of applications running on GPGPUs. Keywords--GPGPUs, reliability, HPC, fault injection, radiation experiments I their appearance on the market. Their very high computational power combined with low cost, reduced power

  14. Assessing the reliability of linear dynamic transformer thermal modelling

    E-Print Network [OSTI]

    Assessing the reliability of linear dynamic transformer thermal modelling X. Mao, D.J. Tylavsky and G.A. McCulla Abstract: Improving the utilisation of transformers requires that the hot-spot and top. An alternative method for assessing transformer model reliability is provided. 1 Introduction The maximally

  15. Consensus alignment server for reliable comparative modeling with distant templates

    E-Print Network [OSTI]

    Vajda, Sandor

    Consensus alignment server for reliable comparative modeling with distant templates Jahnavi C; Accepted April 26, 2004 ABSTRACT Consensus is a server developed to produce high- quality alignments different align- ment methods, the server produces a consensus alignment, with a reliability measure

  16. On Improving the Performance of Reliable Server Pooling Systems

    E-Print Network [OSTI]

    Dreibholz, Thomas

    On Improving the Performance of Reliable Server Pooling Systems for Distance-Sensitive Distributed, Germany, dreibh@iem.uni-due.de, http://www.exp-math.uni-essen.de/~dreibh Abstract. Reliable Server Pooling (RSerPool) is a protocol framework for server redundancy and session failover, currently under

  17. Improving the Load Balancing Performance of Reliable Server Pooling

    E-Print Network [OSTI]

    Dreibholz, Thomas

    Improving the Load Balancing Performance of Reliable Server Pooling in Heterogeneous Capacity@iem.uni-due.de Abstract. The IETF is currently standardizing a light-weight protocol frame- work for server redundancy and session failover: Reliable Server Pooling (RSer- Pool). It is the novel combination of ideas from

  18. Towards Reliable SubDivision of Geological Areas: Interval Approach

    E-Print Network [OSTI]

    Kreinovich, Vladik

    Towards Reliable Sub­Division of Geological Areas: Interval Approach David D. Coblentz 1;2 , Vladik difficult to produce a reliable subdivision. The subdivision of a geological zone into segments is often, and often, we do not have a statistically sufficient amount of thoroughly analyzed geological samples

  19. Towards Reliable SubDivision of Geological Areas: Interval Approach

    E-Print Network [OSTI]

    Kreinovich, Vladik

    Towards Reliable Sub­Division of Geological Areas: Interval Approach David D. Coblentz 1;2 , Vladik Difficult to Produce a Reliable Subdivision The subdivision of a geological zone into segments is often the area, and often, we do not have a statistically sufficient amount of thoroughly analyzed geological

  20. Gearbox Reliability Collaborative High Speed Shaft Tapered Roller Bearing Calibration

    SciTech Connect (OSTI)

    Keller, J.; Guo, Y.; McNiff, B.

    2013-10-01T23:59:59.000Z

    The National Renewable Energy Laboratory (NREL) Gearbox Reliability Collaborative (GRC) is a project investigating gearbox reliability primarily through testing and modeling. Previous dynamometer testing focused upon acquiring measurements in the planetary section of the test gearbox. Prior to these tests, the strain gages installed on the planetary bearings were calibrated in a load frame.

  1. MARKETS FOR REACTIVE POWER AND RELIABILITY: A WHITE PAPER

    E-Print Network [OSTI]

    1 MARKETS FOR REACTIVE POWER AND RELIABILITY: A WHITE PAPER Engineering and Economics of Electricity Research Group (E3 RG) CORNELL UNIVERSITY E3 RG contributing authors: Robert Thomas, Director the Consortium for Electric Reliability Technology Solutions (CERTS) and in part by the National Science

  2. PSFQ: A Reliable Transport Protocol for Wireless Sensor Networks

    E-Print Network [OSTI]

    Han, Richard Y.

    PSFQ: A Reliable Transport Protocol for Wireless Sensor Networks Chieh-Yih Wan Dept. of Electrical class of reliable data applications emerging in wireless sensor networks. For example, currently sensor of sensors in wireless sensor networks on the fly (e.g., during disaster recovery). Due to the application

  3. Separating myths from reality in PV inverter reliability

    E-Print Network [OSTI]

    Rollins, Andrew M.

    Separating myths from reality in PV inverter reliability Or, How I learned to stop worrying: Navigant Consulting report to NREL on PV inverter status. NCI found that inverters were limited by 18 and love the BOM Timothy J. Peshek SDLE Reliability workshop, CWRU 4/9/2012 #12;What inverter manufacturers

  4. IEEE TRANSACTIONS ON RELIABILITY 1 Optimal Maintenance Strategies for Wind

    E-Print Network [OSTI]

    Ntaimo, Lewis

    from sensors, our research objective is to derive an optimal observation and preventive maintenance TRANSACTIONS ON RELIABILITY 3 ACRONYMS NA no action PM preventive maintenance OB observation CM correctiveIEEE TRANSACTIONS ON RELIABILITY 1 Optimal Maintenance Strategies for Wind Turbine Systems Under

  5. Reducing Complexity and Improving the Reliability of Frequency Reconfigurable Antennas

    E-Print Network [OSTI]

    the desired performance. In this paper, we minimize the number of electronic components used to reconfigureReducing Complexity and Improving the Reliability of Frequency Reconfigurable Antennas J-- In this paper the complexity and reliability of frequency reconfigurable antennas are presented. A new approach

  6. Review Article Gate-Level Circuit Reliability Analysis: A Survey

    E-Print Network [OSTI]

    Chen, Chunhong

    electronic components (such as single electron devices) have demonstrated their nondeterministic characReview Article Gate-Level Circuit Reliability Analysis: A Survey Ran Xiao and Chunhong Chen. Circuit reliability has become a growing concern in today's nanoelectronics, which motivates strong

  7. Issue Papers on Reliability and Competition Thomas August 2005

    E-Print Network [OSTI]

    Electric Power Industry Restructuring and Grid Reliability Robert J. Thomas, Professor School of Electrical and Computer Engineering, Cornell University Introduction Electric power in the U.S. is a more than $250). The electricity system is a critical infrastructure; its continued and reliable functioning is essential

  8. A Reliable method for Blind Channel Identification using Burst Data

    E-Print Network [OSTI]

    Raphaeli, Dan

    1 A Reliable method for Blind Channel Identification using Burst Data Dan Raphaeli, Senior Member Output (MISO) FIR channels with nonminimum phase. The approach is based on mini- mizing a cost function of identification success when consider- ing statistical channels, its ability to obtain reliable channel estimates

  9. Reliability of Heterogeneous Distributed Computing Systems in the Presence

    E-Print Network [OSTI]

    Hayat, Majeed M.

    Reliability of Heterogeneous Distributed Computing Systems in the Presence of Correlated Failures of distributed-computing systems (DCSs) has been widely studied under the assumption that computing elements (CEs of correlated failures are also investigated. Index Terms--Distributed computing, load balancing, reliability

  10. Dynamically Quantifying and Improving the Reliability of Distributed Storage Systems

    E-Print Network [OSTI]

    Bianchini, Ricardo

    Dynamically Quantifying and Improving the Reliability of Distributed Storage Systems Rekha Bachwani-scale storage systems can be significantly improved by using bet- ter reliability metrics and more efficient on a distributed storage system based on erasure codes. We find that MinI improves relia- bility significantly

  11. ContentsContents4466Reliability and quality control

    E-Print Network [OSTI]

    Vickers, James

    outcomes You will first learn about the importance of the concept of reliability applied to systems such things as maintenance and part replacement schedules, whole system replacements and reliability testing systems understand the relationship between the Weibull distribution and the exponential distribution #12

  12. Maximizing Service Reliability in Distributed Computing Systems with Random Node

    E-Print Network [OSTI]

    Hayat, Majeed M.

    Maximizing Service Reliability in Distributed Computing Systems with Random Node Failures: Theory Member, IEEE Abstract--In distributed computing systems (DCSs) where server nodes can fail permanently with nonzero probability, the system performance can be assessed by means of the service reliability, defined

  13. A summary of North American HVDC converter station reliability specifications

    SciTech Connect (OSTI)

    Vancers, I. (ABB Power Systems Inc., Los Angeles, CA (United States)); Hormozi, F.J. (Los Angeles Dept. of Water and Power, CA (United States))

    1993-07-01T23:59:59.000Z

    This paper summarizes Reliability, Availability, and Maintainability (RAM) specifications that were issued for thyristor based HVDC converter stations in service in North America. A total of twenty project specifications are summarized. A detailed summary by project is shown with specific quantitative requirements categorized. Definitions of terms, representative design principles, and formulas used in calculating RAM parameters contained in existing reliability specifications are presented.

  14. RELIABILITY COMPARISON MODELS FOR OFFSHORE WIND TURBINES (OWT)

    E-Print Network [OSTI]

    Bernstein, Joseph B.

    RELIABILITY COMPARISON MODELS FOR OFFSHORE WIND TURBINES (OWT) Yizhou Lu, T. M. Delorm, A. Christou of survivor functions R(t) of drive-trains, after 1 year of operation, between Offshore Wind Turbine (OWT) vs of the reliability of these 5 Types Surrogate failure rate data Onshore wind turbines (OT) 1-1.5MW CONCLUSIONS

  15. Anyone working to improve access to healthy food for underserved populations Food shelves, food banks, meal programs and USDA nutrition programs

    E-Print Network [OSTI]

    Amin, S. Massoud

    , Minnesota Department of Health, Minnesota Department of Human Services, Second Harvest Heartland shelves, food banks, meal programs and USDA nutrition programs · Food policy networks, public health agencies and State Health Improvement Program grantees · Health care organizations and health care

  16. LESSONS LEARNED AND BEST PRACTICES PROGRAM MANUAL

    SciTech Connect (OSTI)

    Gravois, Melanie C.

    2007-05-24T23:59:59.000Z

    This document provides requirements and guidelines for conducting a Lessons Learned and Best Practices Program within Lawrence Berkeley National Laboratory (LBNL) to ensure ongoing improvement of safety and reliability, prevent the recurrence of significant adverse events/trends, and determine implementation strategies that will help LBNL successfully meet the missions and goals set forth by the Department of Energy (DOE).

  17. FUEL CELL TECHNOLOGIES PROGRAM Hydrogen Storage

    E-Print Network [OSTI]

    to the rate of refueling today's gasoline vehicles. Using currently available high-pressure tank storage that can achieve similar performance, at a similar cost, as gasoline fuel storage systems. Compressed gasFUEL CELL TECHNOLOGIES PROGRAM Hydrogen Storage Developing safe, reliable, compact, and cost

  18. Method used to estimate screening-level Total Failure Probability for human error events

    SciTech Connect (OSTI)

    Burns, R.S.; Turner, J.H. [Oak Ridge National Lab., TN (United States). Engineering Technology Div.

    1994-12-31T23:59:59.000Z

    This document briefly describes the method used to estimate a screening value for the Total Failure Probability (F{sub T}) of human error events that are identified in the fault trees which describe potential liquid UF{sub 6} release accidents at two US Gaseous Diffusion Plants. A discussion is provided of the assumptions, limitations, and overall logic of the F{sub T} assignment method, and a description is presented of how the method is employed. The description herein presents the screening technique used to quantify human errors in the accident analysis portion of the Gaseous Diffusion Plant Safety Analysis Report Upgrade Program. Specifically, the basic events analyzed here are given in the fault trees for one facility at the Paducah Gaseous Diffusion Plant (PGDP) and one at the Portsmouth Gaseous Diffusion Plant (PORTS). These plants are primarily chemical processing facilities that deal with a slightly radioactive process gas, low-enriched uranium hexafluoride (UF{sub 6}). A Human Reliability Analysis (HRA) was not accomplished while drawing the fault trees; the accomplishment of an HRA would be determined by the overall study results. The method described herein provides a framework within which a conservative estimate of human error probability can be made at the screening level for use in the event trees and fault trees.

  19. Wind turbine reliability : a database and analysis approach.

    SciTech Connect (OSTI)

    Linsday, James (ARES Corporation); Briand, Daniel; Hill, Roger Ray; Stinebaugh, Jennifer A.; Benjamin, Allan S. (ARES Corporation)

    2008-02-01T23:59:59.000Z

    The US wind Industry has experienced remarkable growth since the turn of the century. At the same time, the physical size and electrical generation capabilities of wind turbines has also experienced remarkable growth. As the market continues to expand, and as wind generation continues to gain a significant share of the generation portfolio, the reliability of wind turbine technology becomes increasingly important. This report addresses how operations and maintenance costs are related to unreliability - that is the failures experienced by systems and components. Reliability tools are demonstrated, data needed to understand and catalog failure events is described, and practical wind turbine reliability models are illustrated, including preliminary results. This report also presents a continuing process of how to proceed with controlling industry requirements, needs, and expectations related to Reliability, Availability, Maintainability, and Safety. A simply stated goal of this process is to better understand and to improve the operable reliability of wind turbine installations.

  20. Systems reliability analysis for the national ignition facility

    SciTech Connect (OSTI)

    Majumdar, K.C.; Annese, C.E.; MacIntyre, A.T.; Sicherman, A.

    1996-06-12T23:59:59.000Z

    A Reliability, Availability and Maintainability (RAM) analysis was initiated for the National Ignition Facility (NIF). The NIF is an inertial confinement fusion research facility designed to achieve controlled thermonuclear reaction; the preferred site for the NIF is the Lawrence Livermore National Laboratory (LLNL). The NIF RAM analysis has three purposes: (1) to allocate top level reliability and availability goals for the systems, (2) to develop an operability model for optimum maintainability, and (3) to determine the achievability of the allocated goals of the RAM parameters for the NIF systems and the facility operation as a whole. An allocation model assigns the reliability and availability goals for front line and support systems by a top-down approach; reliability analysis uses a bottom-up approach to determine the system reliability and availability from component level to system level.