112 Matching Results

Search Results

Advanced search parameters have been applied.
in subjects: "Nuclear energy"  
Results: 1 - 24 next
open access

Plasma Separation Process: Betacell (BCELL) code: User's manual. [Bipolar barrier junction]

Description: The emergence of clearly defined applications for (small or large) amounts of long-life and reliable power sources has given the design and production of betavoltaic systems a new life. Moreover, because of the availability of the plasma separation program, (PSP) at TRW, it is now possible to separate the most desirable radioisotopes for betacell power generating devices. A computer code, named BCELL, has been developed to model the betavoltaic concept by utilizing the available up-to-date sour… more
Date: November 13, 1987
Creator: Taherzadeh, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Interim economic and demographic profile, Benton and Franklin Counties, Washington: Working draft

Description: This report is organized into five sections. Section 2 summarizes the methods used to compile and analyze the data presented in the report. It includes a discussion of the Qualilty Assurance context within which the data were collected, analyzed, and stored; a definition of the variables and time period included in the profile; description of the secondary and primary data collection, compilation, and analysis procedures used in preparing the report; and a summary of the database management sys… more
Date: November 1, 1987
Creator: Clark, D.C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Advanced nuclear rocket engine mission analysis

Description: The use of a derivative of the NERVA engine developed from 1955 to 1973 was evluated for potential application to Air Force orbital transfer and maneuvering missions in the time period 1995 to 2020. The NERVA stge was found to have lower life cycle costs (LCC) than an advanced chemical stage for performing low earth orbit (LEO) to geosynchronous orbit (GEO0 missions at any level of activity greater than three missions per year. It had lower life cycle costs than a high performance nuclear elect… more
Date: December 1, 1987
Creator: Ramsthaler, J.; Farbman, G.; Sulmeisters, T.; Buden, D. & Harris, P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A synthesis of ethnohistorical materials concerning the administration of Federal Indian policy among the Yakima, Umatilla, and Nez Perce Indian people: Working draft

Description: For the purposes of the Nuclear Waste Policy Act, the Confederated Tribes and Bands of the Yakima Indian Nation, the Confederated Tribes of the Umatilla Indian Reservation, and the Nez Perce Tribe have been accorded the status of ''Affected Indian Tribe'' and have become party to the proceedings to determine a suitable location for the nation's first commercial waste repository. Each of the Tribes has expressed concerns about the suitability of the Hanford Site in eastern Washington. These conc… more
Date: November 1, 1987
Creator: Liebow, E.B.; Younger, C.A. & Broyles, J.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Transactions of the fourth symposium on space nuclear power systems

Description: This paper contains the presented papers at the fourth symposium on space nuclear power systems. Topics of these papers include: space nuclear missions and applications, reactors and shielding, nuclear electric and nuclear propulsion, refractory alloys and high-temperature materials, instrumentation and control, energy conversion and storage, space nuclear fuels, thermal management, nuclear safety, simulation and modeling, and multimegawatt system concepts. (LSP)
Date: January 1, 1987
Creator: El-Genk, M.S. & Hoover, M.D. (eds.)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A comparison of propulsion systems for potential space mission applications

Description: A derivative of the NERVA nuclear rocket engine was compared with a chemical propulsion system and a nuclear electric propulsion system to assess the relative capabilities of the different propulsion system options for three potential space missions. The missions considered were (1) orbital transfer from low earth orbit (LEO) to geosynchronous earth orbit (GEO), (2) LEO to a lunar base, and (3) LEO to Mars. The results of this comparison indicate that the direct-thrust NERVA-derivative nuclear … more
Date: January 1, 1987
Creator: Harvego, E.A. & Sulmeisters, T.K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Level of evidence for reasonable assurance guides to prediction

Description: Over the past years, the DOE Contractors have produced a great deal of work that has been extensively reviewed and criticized by the Nuclear Regulatory Commission (NRC), the Materials Review Board (MRB) of the DOE, the Advisory Committee on Reactor Safeguards (ACRS), and the technical support group at Brookhaven National Laboratory (BNL). Common aspects of the reviews and criticisms have provided information on the level of evidence required by the scientific community to defend performance cla… more
Date: April 1, 1987
Creator: Schweitzer, D.G. & Sastre, C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Internally deposited fallout from the Chernobyl reactor accident

Description: In our work with about 100 subjects resident in eastern Europe (mostly Poland) at the time of the Chernobyl reactor accident or traveling as tourists, /sup 131/I was readily detectable in the thyroid through mid-June, 1986, and was detectable in some subjects as late as early July, 9 to 10 weeks after the start of the accident. Among 42 subjects who were in eastern Europe on April 26, 1986, and in whom /sup 131/I was detectable, the median activity in the thyroid was 1.4 nCi at the time of meas… more
Date: January 1, 1987
Creator: Schlenker, R.A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Requirements and cost considerations for a Combined Space Nuclear Reactor Test Facility

Description: A number of US military programs are currently considering nuclear power systems for space propulsion and electric power applications. These space power systems will each require expensive ground testing of nuclear components and systems prior to deployment in space. In some cases, the ground test facility construction and operating costs can represent a major portion of the total program budget. To minimize the costs to individual programs, consideration is given to the potential for reducing … more
Date: January 1, 1987
Creator: Harvego, E. A.; Park, D. L.; Ramsthaler, J. H.; Reed, W. C.; Whitbeck, J. F. & Gillies, B. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Small space reactor power systems for unmanned solar system exploration missions

Description: A preliminary feasibility study of the application of small nuclear reactor space power systems to the Mariner Mark II Cassini spacecraft/mission was conducted. The purpose of the study was to identify and assess the technology and performance issues associated with the reactor power system/spacecraft/mission integration. The Cassini mission was selected because study of the Saturn system was identified as a high priority outer planet exploration objective. Reactor power systems applied to this… more
Date: December 1, 1987
Creator: Bloomfield, H. S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High-temperature compatibility study of iridium (DOP-26 alloy) with graphite and plutonia

Description: This report outlines the materials compatibility tests conducted on DOP-26 iridium alloy and carbon. The carbon used was in the form of woven graphite as present in the impact shell used to encase plutonia in nuclear heat sources. In addition, compatibility tests of the DOP-26 alloy with plutonia are described. The reactivity observed in both systems is discussed. 4 refs., 6 figs.
Date: December 1, 1987
Creator: Axler, K.M. & Eash, D.T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Atoms to electricity. [Booklet]

Description: This booklet explains the basic technology of nuclear fission power reactors, the nuclear fuel cycle and the role of nuclear energy as one of the domestic energy resources being developed to help meet our national energy demand. Nuclear power accounted for over 16 percent of the US electric energy supply in 1986 and was second only to coal as a source of our electric power. In the 1990s, nuclear energy is expected to provide almost 20 percent of the Nation's electricity. 38 figs., 5 tabs.
Date: November 1, 1987
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Nuclear Waste Treatment Program: Annual report for FY 1986

Description: To support DOE's attainment of its goals, Nuclear Waste Treatment Program (NWTP) is to provide technology necessary for the design and operation of nuclear waste treatment facilities by commercial enterprises as part of a licensed waste management system and problem-specific treatment approaches, waste form and treatment process adaptations, equipment designs, and trouble-shooting. This annual report describes progress during FY 1986 toward meeting these two objectives. 29 refs., 59 figs., 25 t… more
Date: September 1, 1987
Creator: Burkholder, H. C.; Brouns, R. A. & Powell, J. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

ATHENA radiation model

Description: The ATHENA computer program has many features that make it desirable to use as a space reactor evaluation tool. One of the missing features was a surface-to-surface thermal radiation model. A model was developed that allows any of the regular ATHENA heat slabs to radiate to any other heat slab. The view factors and surface emissivities must be specified by the user. To verify that the model was properly accounting for radiant energy transfer, two different types of test calculations were perfor… more
Date: October 1, 1987
Creator: Shumway, R.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Atmospheric Releases From Severe Nuclear Accidents: Environmental Transport and Pathways to Man: Modelling of Radiation Doses to Man From Chernobyl Releases

Description: The Chernobyl accident released a large amount of highly fractionated radioactive debris, including approximately 89 PBq of /sup 137/Cs. We calculated the resulting collective dose commitment to the Northern Hemisphere via the pathways of external exposure and ingestion of radionuclides withd food. We developed a rural/urban model of external dose and we used the PATHWAY model for ingestion. The results are a collective dose commitment of 630,000 person-Gy over the first year and 1,200,000 pers… more
Date: January 1, 1987
Creator: Anspaugh, L. R.; Goldman, M. & Catlin, R. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

West Valley Demonstration Project: Public information plan: Objectives, 1988

Description: This report describes the objectives and proposed activities of the public information program. Included are statements of purpose, goals, approach, and methods of implementation. This office deals with local, state, and federal agencies to inform them on the status of this demonstration project. (TEM)
Date: September 30, 1987
Creator: Hoffman, W. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Projected global health impacts from severe nuclear accidents: Conversion of projected doses to risks on a global scale: Experience from Chernobyl releases

Description: Best estimates of possible additional health effects were projected for the Northern Hemisphere: (1) over the next 50 years, up to 28 thousand radiation-induced fatal cancers, compared to an expected 600 million cancer deaths from natural or spontaneous causes; (2) over the next year, up to 700 additional cases of severe mental retardation, compared to a normal expectation of 340 thousand cases; and (3) in the first generation, up to 1.9 thousand radiation-induced genetic disorders, compared to… more
Date: January 1, 1987
Creator: Catlin, R. J.; Goldman, M. & Anspaugh, L. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Assessment of ceramic composites for MMW space nuclear power systems

Description: Proposed multimegawatt nuclear power systems which operate at high temperatures, high levels of stress, and in hostile environments, including corrosive working fluids, have created interest in the use of ceramic composites as structural materials. This report assesses the applicability of several ceramic composites in both Brayton and Rankine cycle power systems. This assessment considers an equilibrium thermodynamic analysis and also a nonequilibrium assessment. (FI)
Date: January 1, 1987
Creator: Besmann, Theodore M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Estimating payload internal temperatures and radiator size for multimegawatt space platforms

Description: A conceptual space platform consists of a payload, a power conditioning unit (PCU), and two radiators: the main radiator and a secondary radiator. A computer program was written to determine the required size of the two radiators and the temperatures of the PCU and payload for a given platform power level. An iterative approach is necessary because the required size of the main radiator depends on the size of the secondary radiator and vice versa. Also, the temperatures of the payload and PCU d… more
Date: August 1, 1987
Creator: Dobranich, D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

International nuclear fuel cycle fact book. [Contains glossary]

Description: As the US Department of Energy (DOE) and DOE contractors have become increasingly involved with other nations in nuclear fuel cycle and waste management cooperative activities, a need has developed for a ready source of information concerning foreign fuel cycle programs, facilities, and personnel. This Fact Book was compiled to meet that need. The information contained has been obtained from nuclear trade journals and newsletters; reports of foreign visits and visitors; CEC, IAEA, and OECD/NEA … more
Date: January 1, 1987
Creator: Leigh, I.W.; Lakey, L.T.; Schneider, K.J. & Silviera, D.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Verification and update of BNL mixed waste survey

Description: This report briefly describes attempts to verify the results of a previous survey on the amount of mixed wastes generated at various facilities during 1985. The original survey indicated some lack of understanding of current EPA regulations. This telephone survey verification indicated a better understanding of these regulations in recent months. Changes in EPA regulations and the addition of new compounds to the list of hazardous wastes are causing problems for organizations trying to comply. … more
Date: January 1, 1987
Creator: Bowerman, B.S. & Siskind, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Gas-cooled reactor power systems for space

Description: In this paper the characteristics of six designs for power levels of 2, 10, and 20 MWe for operating times of 1 and 7 y are described. The operating conditions for these arbitrary designs were chosen to minimize system specific mass. The designs are based on recent work which benefits from earlier analyses of nuclear space power systems conducted at our Laboratory. Both gas- and liquid-cooled reactors had been considered. Pitts and Walter (1970) reported on the results of a detailed study of a … more
Date: January 1, 1987
Creator: Walter, C.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Environmental compliance considerations for the management of cultural resources

Description: This paper examines three key considerations underlying the programmatic management of cultural resources that may be affected by a large federal project. These considerations are statutory background and the compliance process, cultural resource compliance tasks, and quality assurance. The first consideration addresses the legal requirements and steps that must be met and taken for federal agencies to fulfill their cultural resource compliance responsibilities. The second consideration focuses… more
Date: January 1, 1987
Creator: Curtis, S. A.; Whitfield, S. & McGinnis, K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
Back to Top of Screen