[Investigations in dynamics of gauge theories in theoretical particle physics] (open access)

[Investigations in dynamics of gauge theories in theoretical particle physics]

The major theme of the theoretical physics research conducted under DOE support over the past several years has been within the rubric of the standard model, and concerned the interplay between symmetries and dynamics. The research was thus carried out mostly in the context of gauge field theories, and usually in the presence of chiral fermions. Dynamical symmetry breaking was examined both from the point of view of perturbation theory, as well as from non-perturbative techniques associated with certain characteristic features of specific theories. Among the topics of research were: the implications of abelian and non-abelian anomalies on the spectrum and possible dynamical symmetry breaking in any theory, topological and conformal properties of quantum fields in two and higher dimensions, the breaking of global chiral symmetries by vector-like gauge theories such as QCD, the phenomenological implications of a strongly interacting Higgs sector in the standard model, and the application of soliton ideas to the physics to be explored at the SSC.
Date: February 1, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
UMTRA Project Office Records Management Plan (open access)

UMTRA Project Office Records Management Plan

The Uranium Mill Tailings Remedial Action (UMTRA) Project Office maintains two distinct records handling areas. One of the areas is maintained by a Technical Assistance Contractor (TAC), and is referred to as the UMTRA Project Document Control Center (UPDCC). The UPDCC manages all UMTRA records except those dealing with contracts, personnel, budgeting, finance, and any other documents which are of a purely administrative nature. The second area, the UMTRA Project Administrative Files Collection (UPAFC), contains all those records listed above that are not managed by the UPDCC. This Records Management Plan (RMP) for the UPAFC will be the framework for identifying the elements and activities that relate to the management and operational aspects involved in the handling of UPAFC. Guidelines for the program will be obtained from US Department of Energy (DOE) Orders. DOE Orders implement the guidelines issued by the National Archives and Records Administration (NARA), the final authority for records management. The RMP will address the life cycle of records, including their creation, maintenance, use, and disposition.
Date: June 1, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
[Investigations in dynamics of gauge theories in theoretical particle physics]. [Virginia Polytechnic Institute State Univ. , Blacksburg] (open access)

[Investigations in dynamics of gauge theories in theoretical particle physics]. [Virginia Polytechnic Institute State Univ. , Blacksburg]

The major theme of the theoretical physics research conducted under DOE support over the past several years has been within the rubric of the standard model, and concerned the interplay between symmetries and dynamics. The research was thus carried out mostly in the context of gauge field theories, and usually in the presence of chiral fermions. Dynamical symmetry breaking was examined both from the point of view of perturbation theory, as well as from non-perturbative techniques associated with certain characteristic features of specific theories. Among the topics of research were: the implications of abelian and non-abelian anomalies on the spectrum and possible dynamical symmetry breaking in any theory, topological and conformal properties of quantum fields in two and higher dimensions, the breaking of global chiral symmetries by vector-like gauge theories such as QCD, the phenomenological implications of a strongly interacting Higgs sector in the standard model, and the application of soliton ideas to the physics to be explored at the SSC.
Date: January 1, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Proceedings of the ninth annual Pacific Climate (PACLIM) workshop (open access)

Proceedings of the ninth annual Pacific Climate (PACLIM) workshop

We describe the climatology of the western United States as seen from two 1-month perspectives, January and July 1988, of the National Meteorological Center large-scale global analysis, the Colorado State University Regional Atmospheric Modeling System (RAMS), and various station observation sets. An advantage of the NMC analysis and the RAMS is that they provide a continuous field interpolation of the meteorological variables. It Is more difficult to describe spatial meteorological fields from the available sparse station networks. We assess accuracy of the NMC analysis and RAMS by finding differences between the analysts, the model and station values at the stations. From these comparisons, we find that RAMS has much more well-developed mesoscale circulation, especially in the surface wind field. However, RAMS climatological and transient fields do not appear to be substantially closer than the large-scale analysis to the station observations. The RAMS model does provide many other meteorological variables, such as precipitation, which are not readily available from the archives of the global analysis. Thus, RAMS could, at the least, be a tool to augment the NMC large-scale analyses.
Date: March 1, 1993
Creator: Redmond, K. T. & Tharp, V. L.
Object Type: Report
System: The UNT Digital Library
Daily temperature and precipitation data for 223 USSR Stations (open access)

Daily temperature and precipitation data for 223 USSR Stations

On- May 23, 1972, the United States and the USSR established a bilateral initiative known as the Agreement on Protection of the Environment. Given recent interest in possible greenhouse gas-induced climate change, Working Group VIII (Influence of Environmental Changes on Climate) has become particularly useful to the scientific communities of both nations. Among its many achievements, Working Group VIII has been instrumental in the exchange of climatological information between the principal climate data centers of each country [i.e., the National Climatic Data Center (NCDC) in Asheville, North Carolina, and the Research Institute of Hydrometeorological Information in Obninsk, Russia]. Considering the relative lack of climate records previously available for the USSR, data obtained via this bilateral exchange are particularly valuable to researchers outside the former Soviet Union. To expedite the dissemination of these data, NOAA`s Climate and Global Change Program funded the Carbon Dioxide Information Analysis Center (CDIAC) and NCDC to distribute one of the more useful archives acquired through this exchange: a 223-station daily data set covering the period 1881-1989. This data set contains: (1) daily mean, minimum, and maximum temperature data; (2) daily precipitation data; (3) station inventory information (WMO No., name, coordinates, and elevation); (4) station history information …
Date: November 1, 1993
Creator: Razuvaev, V. N.; Apasova, E. G.; Martuganov, R. A.; Vose, R. S. & Steurer, P. M.
Object Type: Report
System: The UNT Digital Library
Engineering Development of Advanced Physical Fine Coal Cleaning Technologies: Froth Flotation. Quarterly Technical Progress Report No. 18, January 1, 1993--March 31, 1993 (open access)

Engineering Development of Advanced Physical Fine Coal Cleaning Technologies: Froth Flotation. Quarterly Technical Progress Report No. 18, January 1, 1993--March 31, 1993

This task is the actual demonstration of the advanced froth flotation technology. All previous work has led to this task. ICF KE technicians and process engineers from the team will operate the plant over a 10 month period to demonstrate the capability of the technology to remove 85% of the pyritic sulfur from three different test coals while recovering at least 85% of the as-mined coal`s energy content. Six major subtasks have been included to better define the overall work scope for this task. The ICF KE team will test the Pittsburgh No. 8 seam, the Illinois No. 6 seam and the Upper Freeport seam; the team will operate the circuit in a continuous run; the team will analyze all samples generated in those runs and will develop a plan to store and dispose of the coal and refuse products. All laboratory data generated will be accessible to all team members and the DOE. The test program for the Pittsburgh No. 8 coal began during March 1, 1993. An arrangement has been made between ICF Kaiser Engineers (ICF KE) and American Electric Power (AEP), who is the host for the DOE POC facility. The arrangement calls for AEP to purchase …
Date: July 1, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Engineering Development of Advanced Physical Fine Coal Cleaning Technologies: Froth Flotation. Quarterly Technical Progress Report No. 19, April 1, 1993--June 30, 1993 (open access)

Engineering Development of Advanced Physical Fine Coal Cleaning Technologies: Froth Flotation. Quarterly Technical Progress Report No. 19, April 1, 1993--June 30, 1993

The first system to test in the advanced DOE POC was the grinding circuit. The grinding circuit consists of the mill classifying cyclones in reverse closed circuit with the ball mill. Reverse closed circuit means the incoming feed and ball mill product are sized in the mill classifying cyclones ahead of the ball mill. This permits removal of natural-sized material and ground-sized material before recirculation through the ball mill. Numerous tests were conducted to establish the correct combination of orifice sizes, pressures and grinding media to meet the design criteria of 95% passing 200 mesh in the column flotation feed. The results from this test work are shown on Table 13.1, Grinding Circuit Test Results and graphically on Figure 13.2 and 13.3. These graphs show the relationship to Column Feed Rate Versus Size of Column Feed and Column Feed Rate Versus Column Feed Mean Particle Size. Our examination of the data indicates that the ball mill must have the smaller grinding media, and the mill classifying cyclone must be arranged as shown in test 93041901. The next step in the test plan was the 16-test resolution IV fractional factorial experiment of a 2{sup 6-2} experiment to determine major interaction of …
Date: November 1, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Everything you might want to know about the Internet but are afraid to ask!. A new users resource (open access)

Everything you might want to know about the Internet but are afraid to ask!. A new users resource

This document is a guide to accessing the Internet and the services available on Internet. The document contains a short explanation of the Internet by E. Kroll and E. Hoffman, brief descriptions of the primary access tools, a glossary, answers to frequently asked questions about the Internet, J. Martin`s `Search for Internet Treasure` and other helpful information. The data access tools discussed in this document include Gopher, World Wide Web, WAIS, ASTRA, ARCHIE, WHOIS, NETSERV, and TRICKLE. The file transfer tool discussed is BITFTP. The two communication services discussed are NETNEWS and LISTSERV.
Date: September 1, 1993
Creator: Thiel, E.
Object Type: Report
System: The UNT Digital Library
Uranium Mill Tailings Remedial Action Project Environmental Protection Implementation Plan (open access)

Uranium Mill Tailings Remedial Action Project Environmental Protection Implementation Plan

The Uranium Mill Tailings Remedial Action (UMTRA) Project Environmental Protection Implementation Plan (EPIP) has been prepared in accordance with the requirements of the US Department of Energy (DOE) Order 5400.1. The UMTRA EPIP covers the time period of November 9, 1993, through November 8, 1994. It will be updated annually. Its purpose is to provide management direction to ensure that the UMTRA Project is operated and managed in a manner that will protect, maintain, and where necessary, restore environmental quality, minimize potential threats to public health and the environment, and comply with environmental regulations and DOE policies. Contents of this report are: (1) general description of the UMTRA project environmental protection program; (2) notifications; (3) planning and reporting; (4) special programs; (5) environmental monitoring programs; (6) quality assurance and data verification; and (7) references.
Date: October 1, 1993
Creator: Vollmer, A. T.
Object Type: Report
System: The UNT Digital Library
Pacific Northwest Laboratory Annual Report for 1992 to the DOE Office of Energy Research (open access)

Pacific Northwest Laboratory Annual Report for 1992 to the DOE Office of Energy Research

This report summarizes progress in OHER biological research and general life sciences research programs conducted at PNL in FY 1992. The research develops the knowledge and fundamental principles necessary to identify, understand, and anticipate the long-term health consequences of energy-related radiation and chemicals. Our continuing emphasis is to decrease the uncertainty of health risk estimates from energy-related technologies through an increase understanding of the ways in which radiation and chemicals cause biological damage. Descriptors of individual research projects as detailed in this report one separately abstracted and indexed for the database.
Date: June 1, 1993
Creator: Kreml, S. A. (ed.) & Park, J. F.
Object Type: Report
System: The UNT Digital Library
Pacific Northwest Laboratory Annual Report for 1992 to the DOE Office of Energy Research. Part 1, Biomedical sciences (open access)

Pacific Northwest Laboratory Annual Report for 1992 to the DOE Office of Energy Research. Part 1, Biomedical sciences

This report summarizes progress in OHER biological research and general life sciences research programs conducted at PNL in FY 1992. The research develops the knowledge and fundamental principles necessary to identify, understand, and anticipate the long-term health consequences of energy-related radiation and chemicals. Our continuing emphasis is to decrease the uncertainty of health risk estimates from energy-related technologies through an increase understanding of the ways in which radiation and chemicals cause biological damage. Descriptors of individual research projects as detailed in this report one separately abstracted and indexed for the database.
Date: June 1, 1993
Creator: Kreml, S. A. & Park, J. F.
Object Type: Report
System: The UNT Digital Library
Licensing plan for UMTRA project disposal sites. Final [report] (open access)

Licensing plan for UMTRA project disposal sites. Final [report]

The Uranium Mill Tailings Remedial Action (UMTRA) Project Office developed a plan to define UMTRA Project licensing program objectives and establish a process enabling the DOE to document completion of remedial actions in compliance with 40 CFR 1 92 and the requirements of the NRC general license. This document supersedes the January 1987 Project Licensing Plan (DOE, 1987). The plan summarizes the legislative and regulatory basis for licensing, identifies participating agencies and their roles and responsibilities, defines key activities and milestones in the licensing process, and details the coordination of these activities. This plan provides an overview of the UMTRA Project from the end of remedial actions through the NRC`s acceptance of a disposal site under the general license. The licensing process integrates large phases of the UMTRA Project. Other programmatic UMTRA Project documents listed in Section 6.0 provide supporting information.
Date: September 1, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Environmental resource document for the Idaho National Engineering Laboratory. Volume 2 (open access)

Environmental resource document for the Idaho National Engineering Laboratory. Volume 2

This document contains information related to the environmental characterization of the Idaho National Engineering Laboratory (INEL). The INEL is a major US Department of Energy facility in southeastern Idaho dedicated to nuclear research, waste management, environmental restoration, and other activities related to the development of technology. Environmental information covered in this document includes land, air, water, and ecological resources; socioeconomic characteristics and land use; and cultural, aesthetic, and scenic resources.
Date: July 1, 1993
Creator: Irving, J. S.
Object Type: Report
System: The UNT Digital Library
Long-Term Surveillance Plan for the Collins Ranch Disposal Site, Lakeview, Oregon. Revision 2 (open access)

Long-Term Surveillance Plan for the Collins Ranch Disposal Site, Lakeview, Oregon. Revision 2

This long-term surveillance plan (LTSP) for the Lakeview, Oregon, Uranium Mill Tailings Remedial Action (UMTRA) Project disposal site describes the surveillance activities for the Lakeview (Collins Ranch) disposal cell, which will be referred to as the Collins Ranch disposal cell throughout this document. The US Department of Energy (DOE) will carry out these activities to ensure that the disposal cell continues to function as designed. This final LTSP was prepared as a requirement for acceptance under the US Nuclear Regulatory Commission (NRC) general license for custody and long-term care of residual radioactive materials. This LTSP documents whether the land and interests are owned by the United States or an Indian tribe, and details how the long-term care of the disposal site will be carried out. It is based on the DOE`s Guidance for Implementing the UMTRA Project Long-term Surveillance Program (DOE, 1992a).
Date: December 1, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Technical Approach to Groundwater Restoration. Final Report (open access)

Technical Approach to Groundwater Restoration. Final Report

The Technical Approach to Groundwater Restoration (TAGR) provides general technical guidance to implement the groundwater restoration phase of the Uranium Mill Tailings Remedial Action (UMTRA) Project. The TAGR includes a brief overview of the surface remediation and groundwater restoration phases of the UMTRA Project and describes the regulatory requirements, the National Environmental Policy Act (NEPA) process, and regulatory compliance. A section on program strategy discusses program optimization, the role of risk assessment, the observational approach, strategies for meeting groundwater cleanup standards, and remedial action decision-making. A section on data requirements for groundwater restoration evaluates the data quality objectives (DQO) and minimum data required to implement the options and comply with the standards. A section on sits implementation explores the development of a conceptual site model, approaches to site characterization, development of remedial action alternatives, selection of the groundwater restoration method, and remedial design and implementation in the context of site-specific documentation in the site observational work plan (SOWP) and the remedial action plan (RAP). Finally, the TAGR elaborates on groundwater monitoring necessary to evaluate compliance with the groundwater cleanup standards and protection of human health and the environment, and outlines licensing procedures.
Date: November 1, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Long-term surveillance plan for the Lowman, Idaho, disposal site (open access)

Long-term surveillance plan for the Lowman, Idaho, disposal site

The long-term surveillance plan (LTSP) for the Lowman, Idaho, Uranium Mill Tailings Remedial Action (UMTRA) Project disposal site describes the surveillance activities for the Lowman disposal cell. The US Department of Energy (DOE) will carry out these activities to ensure that the disposal cell continues to function as designed. This preliminary final LTSP is being submitted to the US Nuclear Regulatory Commission (NRC) as a requirement for issuance of a general license for custody and long-term care for the disposal site. The general license requires that the disposal cell be cared for in accordance with the provisions of this LTSP. The LTSP documents whether the land and interests are owned by the United States or an Indian tribe, and describes, in detail, how the long-term care of the disposal site will be carried out through the UMTRA Project long-term surveillance program. The Lowman, Idaho, LTSP is based on the DOE`s Guidance for Implementing the UMTRA Project Long-term Surveillance Program, (DOE, 1992).
Date: September 1, 1993
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Predicted fate of tritium residuum from groundwater tracer experiments in the Amargosa Desert, southern Nevada (open access)

Predicted fate of tritium residuum from groundwater tracer experiments in the Amargosa Desert, southern Nevada

Analytic solutions are used in this study to evaluate potential groundwater transport of tritium used in goundwater tracer tests southwest of the Nevada Test Site. Possible transport from this site is of interest because initial radionuclide concentrations were high and the site is close to goundwater discharge points (12 km). Anecdotal evidence indicates that 90 percent of these tracers were removed by pumping at the completion of the tests; this study examines the probable transport of the tracers with and without the removal. Classical dispersive transport analytic solutions are used, treating the tracer test as a point slug injection. Input parameters for the solutions were measured at the site, and consideration of parameter uncertainty is incorporated in the results. With removal of the tracer, the maximum expected region with above-Safe Drinking Water Act (40 CFR 121) concentrations of tritium extends 5 km from the injection point, and does not reach any sites of public access. Detectable tritium from the tests is likely to have reached the Ash Meadows fault zone, but flow along the fault probably diluted the tracer to below detection limits before arrival at springs along the fault. Arrival at the springs would have occurred 20 to 25 …
Date: July 1, 1993
Creator: Brikowski, T.
Object Type: Report
System: The UNT Digital Library
The Global Climatology Network Precipitation data (open access)

The Global Climatology Network Precipitation data

Several years ago, in response to growing concern about global climate change, the US National Climatic Data Center and the Carbon Dioxide Information Analysis Center undertook an effort to create a baseline global land surface climate data set called the Global Historical Climatology Network (GHCN, Vose et al., 1992). GHCN was created by merging several large existing climate data sets into one data base. Fifteen separate data sets went into the creation of the GHCN version 1.0. GHCN version 1.0 was released in 1992. It has 7,533 precipitation stations, but the number of stations varies with time. A slight majority (55%) have records in excess of 50 years, and a significant proportion (13%) have records in excess of 100 years. The longest period of record for any given station is 291 years (1697--1987 for Kew, United Kingdom).
Date: August 1, 1993
Creator: Peterson, T. C.; Easterling, D. R.; Vose, R. S. & Eischeid, J. K.
Object Type: Article
System: The UNT Digital Library
An algebraic approach to modeling in software engineering (open access)

An algebraic approach to modeling in software engineering

Our work couples the formalism of universal algebras with the engineering techniques of mathematical modeling to develop a new approach to the software engineering process. Our purpose in using this combination is twofold. First, abstract data types and their specification using universal algebras can be considered a common point between the practical requirements of software engineering and the formal specification of software systems. Second, mathematical modeling principles provide us with a means for effectively analyzing real-world systems. We first use modeling techniques to analyze a system and then represent the analysis using universal algebras. The rest of the software engineering process exploits properties of universal algebras that preserve the structure of our original model. This paper describes our software engineering process and our experience using it on both research and commercial systems. We need a new approach because current software engineering practices often deliver software that is difficult to develop and maintain. Formal software engineering approaches use universal algebras to describe ``computer science`` objects like abstract data types, but in practice software errors are often caused because ``real-world`` objects are improperly modeled. There is a large semantic gap between the customer`s objects and abstract data types. In contrast, mathematical modeling …
Date: September 1, 1993
Creator: Loegel, G. J. & Ravishankar, C. V.
Object Type: Article
System: The UNT Digital Library
Computer/information security design approaches for Complex 21/Reconfiguration facilities (open access)

Computer/information security design approaches for Complex 21/Reconfiguration facilities

Los Alamos National Laboratory and Sandia National Laboratories have been designated the technical lead laboratories to develop the design of the computer/information security, safeguards, and physical security systems for all of the DOE Complex 21/Reconfiguration facilities. All of the automated information processing systems and networks in these facilities will be required to implement the new DOE orders on computer and information security. The planned approach for a highly integrated information processing capability in each of the facilities will require careful consideration of the requirements in DOE Orders 5639.6 and 1360.2A. The various information protection requirements and user clearances within the facilities will also have a significant effect on the design of the systems and networks. Fulfilling the requirements for proper protection of the information and compliance with DOE orders will be possible because the computer and information security concerns are being incorporated in the early design activities. This paper will discuss the computer and information security addressed in the integrated design effort, uranium/lithium, plutonium, plutonium high explosive/assembly facilities.
Date: August 1, 1993
Creator: Hunteman, W. J.; Zack, N. R. & Jaeger, C. D.
Object Type: Article
System: The UNT Digital Library
Proceedings of the workshop for exchange of technology for CWC inspections (open access)

Proceedings of the workshop for exchange of technology for CWC inspections

With the signing of the Chemical Weapons Convention (CWC), the work of the Preparatory Commission in defining the modalities of on-site verification inspections will begin early in 1993. One of the methods for increasing the effectiveness of inspections is the collection of samples for chemical analysis. The CWC allows for this analysis to be performed either at the site of the inspection or in a dedicated off-site laboratory. The decision as to where samples are to be analyzed in any specific instance may involve a consideration of the threat, real or perceived, to the compromise of legitimate sensitive host-party information. The ability to perform efficient chemical analysis at the inspection site, where samples remain in joint (host-inspector) custody and the analytical procedures can be observed by the host, can alleviate much of the concern over possible loss of confidential information in both government and industry. This workshop was designed to encourage the exchange of information among participants with experience in the use of analytical equipment for on-site sample collection and analysis. Individual projects are processed separately for the databases.
Date: April 1, 1993
Creator: McGuire, R. R.
Object Type: Article
System: The UNT Digital Library
Expert judgment on markers to deter inadvertent human intrusion into the Waste Isolation Pilot Plant (open access)

Expert judgment on markers to deter inadvertent human intrusion into the Waste Isolation Pilot Plant

The expert panel identified basic principles to guide current and future marker development efforts: (1) the site must be marked, (2) message(s) must be truthful and informative, (3) multiple components within a marker system, (4) multiple means of communication (e.g., language, pictographs, scientific diagrams), (5) multiple levels of complexity within individual messages on individual marker system elements, (6) use of materials with little recycle value, and (7) international effort to maintain knowledge of the locations and contents of nuclear waste repositories. The efficacy of the markers in deterring inadvertent human intrusion was estimated to decrease with time, with the probability function varying with the mode of intrusion (who is intruding and for what purpose) and the level of technological development of the society. The development of a permanent, passive marker system capable of surviving and remaining interpretable for 10,000 years will require further study prior to implementation.
Date: November 1, 1993
Creator: Trauth, K. M.; Hora, S. C. & Guzowski, R. V.
Object Type: Report
System: The UNT Digital Library
Oak Ridge Health Studies Phase 1 report, Volume 2: Part C, Dose Reconstruction Feasibility Study. Tasks 5: A summary of information concerning historical locations and activities of populations potentially affected by releases from the Oak Ridge Reservation (open access)

Oak Ridge Health Studies Phase 1 report, Volume 2: Part C, Dose Reconstruction Feasibility Study. Tasks 5: A summary of information concerning historical locations and activities of populations potentially affected by releases from the Oak Ridge Reservation

A significant number of information sources have been identified that are relevant to historical locations and activities of populations potentially affected by releases from the Oak Ridge Reservation. The information that has been reviewed as part of this Task 5 investigation has shown that numerous residences and farms have historically been present near the ORR boundary and that a variety of land uses and recreational activities have been practiced. Based on this information alone, it would appear that many routes of off-site exposure could have been plausible. Most of the available published information addresses demographic and land use data on a regional or county-wide basis over fairly broad time periods. The information sources that are most readily available do not support direct evaluation of potential exposure pathways at specific geographic locations near the Oak Ridge facilities at specific points in time. A number of information sources have been identified that can provide demography and land use information more specific to locations and time periods that are identified to be of interest. Examples of data sources in this category include individual USGS topographic maps, aerial photographs, lowest-level census tract data, and interviews with long-time local residents. However, specific release events and …
Date: September 1, 1993
Creator: DaMassa, C. L. & Widner, T. E.
Object Type: Report
System: The UNT Digital Library
Preliminary hazards analysis for the National Ignition Facility (open access)

Preliminary hazards analysis for the National Ignition Facility

This report documents the Preliminary Hazards Analysis (PHA) for the National Ignition Facility (NIF). In summary, it provides: a general description of the facility and its operation; identification of hazards at the facility; and details of the hazards analysis, including inventories, bounding releases, consequences, and conclusions. As part of the safety analysis procedure set forth by DOE, a PHA must be performed for the NIF. The PHA characterizes the level of intrinsic potential hazard associated with a facility, and provides the basis for hazard classification. The hazard classification determines the level of safety documentation required, and the DOE Order governing the safety analysis. The hazard classification also determines the level of review and approval required for the safety analysis report. The hazards of primary concern associated with NIF are radiological and toxicological in nature. The hazard classification is determined by comparing facility inventories of radionuclides and chemicals with threshold values for the various hazard classification levels and by examining postulated bounding accidents associated with the hazards of greatest significance. Such postulated bounding accidents cannot take into account active mitigative features; they must assume the unmitigated consequences of a release, taking into account only passive safety features. In this way, the …
Date: October 1, 1993
Creator: Brereton, S. J.
Object Type: Report
System: The UNT Digital Library