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Licensing topical report: the measurement and modelling of time-dependent fission product release from failed HTGR fuel particles under accident conditions

Description: The release of fission products from failed fuel particles was measured under simulated accident (core heatup) conditions. A generic model and specific model parameters that describe delayed fission product release from the kernels of failed HTGR fuel particles were developed from the experimental results. The release of fission products was measured from laser-failed BISO ThO/sub 2/ and highly enriched (HEU) TRISO UC/sub 2/ particles that had been irradiated to a range of kernel burnups. The b… more
Date: April 1, 1980
Creator: Myers, B.F. & Morrissey, R.E.
Item Type: Refine your search to only Report
open access

Light water reactor fuel reprocessing: dissolution studies of voloxidized and nonvoloxidized fuel

Description: Small-scale tests with irradiated Zircaloy-clad fuels from Robinson, Oconee, Saxton, and Point Beach reactors with burnups from about 200 to 28,000 MWD/MTHM have been made to determine the dissolution behavior of both voloxidized (U{sub 3}O{sub 8}) and nonvoloxidized (UO{sub 2}) fuel. No significant technical problems were encountered in batch-dissolving of either form. Dissolution rates were well-controlled in all tests. Significant characteristics of U{sub 3}O{sub 8} dissolution that differed… more
Date: April 1, 1980
Creator: Johnson, D. R. & Stone, J. A.
Item Type: Refine your search to only Report
open access

Line-focus solar central power system, Phase I. Final report, 29 September 1978 to 30 April 1980. Volume II. Text

Description: The conceptual design, parametric analysis, cost and performance analysis, and a commercial assessment of a 100-MWe high-temperature line-focus central power system are presented. Parametric analyses and conceptual design of the heliostat subsystem, receiver subsystem, heat transport subsystem, energy storage subsystem, electrical power generating subsystem, and master control subsystem are included. A market analysis and development plan are given. (WHK)
Date: April 1, 1980
Creator: Slemmons, A J
Item Type: Refine your search to only Report
open access

Line-focus solar central power system, Phase I. Final report, 29 September 1978 to 30 April 1980. Volume III. Appendices

Description: The conceptual design, parametric analysis, cost and performance analysis, and commercial assessment of a 100-MWe line-focus solar central receiver power plant are reported. This volume contains the appendices: (a) methods of determination of molten salt heat-transfer coefficients and tube-wall temperatures, (b) inputs for STEAEC programs, (c) description of system analysis computer program, (d) receiver analysis program, and (e) heliostat production plan and design methodology. (WHK)
Date: April 1, 1980
Creator: Slemmons, A J
Item Type: Refine your search to only Report
open access

Line-focus solar central power system, phase I. Subsystem experiment: receiver heat transfer

Description: Wind-tunnel tests confirmed that heat losses due to natural convection are negligible in the line-focus, solar-powered receiver. Anomalies in the forced-convection tests prevented definitive conclusions regarding the more important forced convection. Flow-visualization tests using a water table show much lower velocities inside the receiver cavity than outside, supporting the supposition that the forced-heat transfer should be less than that from a standard exposed cylinder. Furthermore, the wa… more
Date: April 1, 1980
Creator: Slemmons, A J
Item Type: Refine your search to only Report
open access

Line-focus solar thermal energy technology development. FY 79 annual report for Department 4720

Description: The primary role of the Solar Energy Projects Department II (4720) is the development, evaluation, and testing of line-focus solar thermal technology. This report of FY 79 progress and accomplishments is divided into two parts: (1) Component and Subsystem Development including the design and analysis of collector modules, their components, and associated materials and processes, and (2) Systems and Applications Development, involving larger configurations of solar thermal line-focus systems. Th… more
Date: April 1, 1980
Creator: Bergeron, K D; Champion, R L & Hunke, R W
Item Type: Refine your search to only Report
open access

Liquid metal reactions under postulated accident conditions for fission and fusion reactors

Description: Sodium and lithium reactions are considered in the context of a postulated breach of a coolant boundary. Specific topics addressed are coolant-atmosphere and coolant-material reactions which may contribute to the overall consequence of a postulated accident scenario, and coolant reaction extinguishment and effluent control which may be desirable for containment of the spilled coolant.
Date: April 1, 1980
Creator: Muhlestein, L.D.
Item Type: Refine your search to only Article
open access

LMFBR in-core thermal-hydraulics: the state of the art and US research and development needs

Description: A detailed critical review is presented of the literature relevant to predicting coolant flow and temperature fields in LMFBR core assemblies for nominal and non-nominal rod bundle geometries and reactor operating conditions. The review covers existing thermal-hydraulic models, computational methods, and experimental data useful for the design of an LMFBR core. The literature search made for this review included publications listed by Nuclear Science Abstracts and Energy Data Base as well as pa… more
Date: April 1, 1980
Creator: Khan, E.U.
Item Type: Refine your search to only Report
open access

LOFT Monthly Progress Report for March 1980

Description: During March, evaluation of Test L3-2 continued and preparations began for the next tests, L6-5 and L3-7. Test L6-5 is the first test of the operational transient series and is a loss-of-feedwater incident. Test L3-7 is a small break, similar to L3-2, wherein the emergency coolant flow is adjusted to permit investigation of natural circulation modes. The controlling schedule items involve efforts to add instrumentation to the plant to better characterize system response. Specifically, a new hot… more
Date: April 1, 1980
Creator: Kaufman, N. C.
Item Type: Refine your search to only Report
open access

Low-cost flywheel demonstration program. Final report

Description: The Applied Physics Laboratory/Department of Energy Low Cost Flywheel Demonstration Program was initiated on 1 October 1977 and was successfully concluded on 31 December 19'9. The total cost of this program was $355,190. All primary objectives were successfully achieved as follows: demonstration of a full-size, 1)kWh flywheel having an estimated cost in large-volume production of approximately $50/kWh; developmeNt of a ball-bearing system having losses comparable to the losses in a totally magn… more
Date: April 1, 1980
Item Type: Refine your search to only Report
open access

Low-cost flywheel demonstration program. Final report, 1 October 1977-31 December 1979

Description: The Applied Physics Laboratory/Department of Energy Low Cost Flywheel Demonstration Program was initiated on 1 October 1977 and was successfully concluded on 31 December 1979. The total cost of this program was $355,190. All primary objectives were successfully achieved as follows: demonstration of a full-size, 1-kWh flywheel having an estimated cost in large-volume production of approximately $50/kWh; development of a ball-bearing system having losses comparable to the losses in a totally magn… more
Date: April 1, 1980
Creator: Rabenhorst, D. W.; Small, T. R. & Wilkinson, W. O.
Item Type: Refine your search to only Report
open access

Low-energy nuclear fusion data and their relation to magnetic and laser fusion

Description: The accuracy of the basic fusion data for the T(d,n)/sup 4/He, /sup 3/He(d,p)/sup 4/He, T(t,2n)/sup 4/He, D(d,n)/sup 3/He, and D(d,p)T reactions was investigated in the 10- to 100-keV bombarding energy region, and the effects of inaccuracies on the design of fusion reactors were assessed. The data base for these reactions (particularly, the most critical T(d,n)/sup 4/He reaction) rests on 25-year-old experiments the accuracy (often assumed to be +- 5%) of which has rarely been questioned: yet, … more
Date: April 1, 1980
Creator: Jarmie, N.
Item Type: Refine your search to only Report
open access

Low level waste management: a compilation of models and monitoring techniques. Volume 1

Description: In support of the National Low-Level Waste (LLW) Management Research and Development Program being carried out at Oak Ridge National Laboratory, Science Applications, Inc., conducted a survey of models and monitoring techniques associated with the transport of radionuclides and other chemical species from LLW burial sites. As a result of this survey, approximately 350 models were identified. For each model the purpose and a brief description are presented. To the extent possible, a point of con… more
Date: April 1, 1980
Creator: Mosier, J. E.; Fowler, J. R. & Barton, C. J. (comps.)
Item Type: Refine your search to only Report
open access

LSA large area silicon sheet task continuous liquid feed Czochralski growth. Quarterly report, January-March 1980

Description: The purpose of this specific phase of the continuous liquid feed program is the design and development of equipment and processes in order to demonstrate the continuous growth of crystals, by use of the Czochralski method, suitable for producing monocrystalline silicon for use in solar cells. This involves the growth of at least 150 kgs of monocrystalline silicon ingots, 150 mm in diameter, obtained from a single growth container. Our approach to meeting this goal is to develop a furnace with c… more
Date: April 1, 1980
Creator: Walters, D.
Item Type: Refine your search to only Report
open access

LSi-11 Microcomputer-Based Data Acquisition System for an Optical Multichannel Analyzer

Description: A microcornputer based operating system for programming and data acquisition from a two a dimensional target optical multichannel analyzer used for high-speed UV/visible spectroscopy is described. The hardware and software interfacing requirements for such a system to provide dedicated real time data acquisition is considered. It is found that a relatively simple parallel interface to an inexpensive microcomputer can be properly configured to perform adequately for high-speed image processing.
Date: April 1, 1980
Creator: Chao, J. L. & Harris, C. B.
Item Type: Refine your search to only Article
open access

Materials Characterization Center workshop on leaching of radioactive waste forms. Summary report

Description: At the first Materials Characterization Center (MCC) workshop, on the leaching of radioactive waste forms, there was general agreement that, after certain revisions, the proposed leach test plan set forth by the MCC can be expected to meet most of the nuclear waste community's waste form durability data requirements. The revisions give a clearer definition of the purposes of each test and the end uses of the data. As a result of the workshop, the format of the test program has been recast to cl… more
Date: April 1, 1980
Creator: Ross, W. A.; Strachan, D. M.; Turcotte, R. P. & Westsik, J. H. Jr.
Item Type: Refine your search to only Report
open access

Materials Management in an Internationally Safeguarded Fuels Reprocessing Plant

Description: The following appendices are included: aqueous reprocessing and conversion technology, reference facilities, process design and operating features relevant to materials accounting, operator's safeguards system structure, design principles of dynamic materials accounting systems, modeling and simulation approach, optimization of measurement control, aspects of international verification problem, security and reliability of materials measurement and accounting system, estimation of in-process inv… more
Date: April 1, 1980
Creator: Hakkila, E. A.; Baker, A. L. & Cobb, D. D.
Item Type: Refine your search to only Report
open access

Materials management in an internationally safeguarded fuels reprocessing plant. [1500 and 210 metric tons heavy metal per year]

Description: The first volume of this report summarizes the results and conclusions for this study of conventional and advanced nuclear materials accounting systems applicable for both large (1500 MTHM/y) and small (210 MTHM/y) spent-fuel reprocessing facilities subject to international verification.
Date: April 1, 1980
Creator: Hakkila, E. A.; Cobb, D. D.; Dayem, H. A.; Dietz, R. J.; Kern, E. A.; Markin, J. T. et al.
Item Type: Refine your search to only Report
open access

Materials management in an internationally safeguarded fuels reprocessing plant. [1500 and 210 metric tons heavy metal per year]

Description: The second volume describes the requirements and functions of materials measurement and accounting systems (MMAS) and conceptual designs for an MMAS incorporating both conventional and near-real-time (dynamic) measurement and accounting techniques. Effectiveness evaluations, based on recently developed modeling, simulation, and analysis procedures, show that conventional accountability can meet IAEA goal quantities and detection times in these reference facilities only for low-enriched uranium.… more
Date: April 1, 1980
Creator: Hakkila, E. A.; Cobb, D. D.; Dayem, H. A.; Dietz, R. J.; Kern, E. A.; Markin, J. T. et al.
Item Type: Refine your search to only Report
open access

McDermitt and Wells 1/sup 0/ x 2/sup 0/ NTMS Areas, Nevada. Data report

Description: This data report presents results of stream sediment reconnaissance in the National Topographic Map Series (NTMS) McDermitt and Wells 1/sup 0/ x 2/sup 0/ quadrangles. Stream sediment samples were collected for the Lawrence Livermore Laboratory. Samples were collected at 1089 sites in the McDermitt quadrangle and at 553 sites in the Wells quadrangle. Neutron activation analysis (NAA) results are given for uranium and 16 other elements. Analytical data (U, Th, Hf; Al, Ce, Fe, Mn, Sc, Na, Ti, V; a… more
Date: April 1, 1980
Creator: Jones, P L & Fay, W M
Item Type: Refine your search to only Report
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