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Review of ORNL-TSF shielding experiments for the gas-cooled Fast Breeder Reactor Program

Description: During the period between 1975 and 1980 a series of experiments was performed at the ORNL Tower Shielding Facility in support of the shield design for a 300-MW(e) Gas Cooled Fast Breeder Demonstration Plant. This report reviews the experiments and calculations, which included studies of: (1) neutron streaming in the helium coolant passageways in the GCFR core; (2) the effectiveness of the shield designed to protect the reactor grid plate from radiation damage; (3) the adequacy of the radial shi… more
Date: January 1, 1982
Creator: Abbott, L. S.; Ingersoll, D. T.; Muckenthaler, F. J. & Slater, C. O.
Partner: UNT Libraries Government Documents Department
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Emanation of tritiated water from disposal sites at Los Alamos, New Mexico

Description: The level of contamination induced by the presence of tritiated water (HTO) on the Bandelier tuff near Los Alamos, New Mexico has been seen to decrease vertically and horizontally at the same rate. This decrease in radioactivity with distance from the source has been measured around three different disposal shafts and found to be somewhat slower than the decrease in emanation rate with distance from the source. Physical factors, suspected of influencing HTO emanation, were entered as independen… more
Date: January 1, 1982
Creator: Abeele, W.V.
Partner: UNT Libraries Government Documents Department
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Wisconsin collector-efficiency study, phase two

Description: The collector efficiency study developed a solar collector rating methodology specific to Wisconsin conditions. Existing rating programs were researched and a collector methodology was developed. A computer program was written to calculate the collector ratings and 25 collector models were rated. The accuracy of the proposed rating methodology was evaluated for 16 collectors placed in 11 domestic hot water systems. One liquid space heating analysis with storage and one air space heating analysi… more
Date: January 15, 1982
Creator: Abright, B.L.
Partner: UNT Libraries Government Documents Department
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Thermohydraulic Modeling and Simulation of Breeder Reactors

Description: This paper deals with the modeling and simulation of system-wide transients in LMFBRs. Unprotected events (i.e., the presumption of failure of the plant protection system) leading to core-melt are not considered in this paper. The existing computational capabilities in the area of protected transients in the US are noted. Various physical and numerical approximations that are made in these codes are discussed. Finally, the future direction in the area of model verification and improvements is d… more
Date: January 1, 1982
Creator: Agrawal, A. K.; Khatib-Rahbar, M.; Curtis, R. T.; Hetrick, D. L. & Girijashankar, P. V.
Partner: UNT Libraries Government Documents Department
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Physics of laser fusion. Volume II. Diagnostics of experiments on laser fusion targets at LLNL

Description: These notes present the experimental basis and status for laser fusion as developed at LLNL. There are two other volumes in this series: Vol. I, by C.E. Max, presents the theoretical laser-plasma interaction physics; Vol. III, by J.F. Holzrichter et al., presents the theory and design of high-power pulsed lasers. A fourth volume will present the theoretical implosion physics. The notes consist of six sections. The first, an introductory section, provides some of the history of inertial fusion a… more
Date: January 1, 1982
Creator: Ahlstrom, H.G.
Partner: UNT Libraries Government Documents Department
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Comparison of high-p/sub T/ particle production in pp and p anti p interactions at the CERN ISR

Description: We have measured the production of neutral and charged hadrons with transverse momenta in the range 2 GeV/c to 6 GeV/c at ..sqrt..s = 63 GeV. Data have been obtained under identical experimental conditions in pp and p anti p collisions. The comparison of the inclusive spectra shows no statistically significant difference over the p/sub T/ range studied.
Date: January 1, 1982
Creator: Akesson, T.; Albrow, M.G. & Almehed, S.
Partner: UNT Libraries Government Documents Department
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Transverse momentum structures of charged particle final states from proton-proton collisions with a charged trigger particle of large transverse momentum

Description: A sample of proton-proton collisions at ..sqrt.. s = 63 GeV with a (trigger) charged particle of transverse momentum in the range 4 to 12 GeV/c and vertical bar rapidity vertical bar < 1 is studied. The events were obtained with the Axial Field Spectrometer at the CERN ISR (experiment R807). Preliminary results are reported from an investigation of the distribution of the transverse momentum vectors of the observed charged particles in the central rapidity region associated with the trigger par… more
Date: January 1, 1982
Creator: Akesson, T.; Albrow, M.G. & Almehed, S.
Partner: UNT Libraries Government Documents Department
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Direct-flash-steam geothermal-power-plant assessment. Final report

Description: The objective of the project was to analyze the capacity and availability factors of an operating direct flash geothermal power plant. The analysis was to include consideration of system and component specifications, operating procedures, maintenance history, malfunctions, and outage rate. The plant studied was the 75 MW(e) geothermal power plant at Cerro Prieto, Mexico, for the years 1973 to 1979. To describe and assess the plant, the project staff reviewed documents, visited the plant, and me… more
Date: January 1, 1982
Creator: Alt, T.E.
Partner: UNT Libraries Government Documents Department
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Actinide integral measurements in the CFRMF and integral tests for ENDF/B-V

Description: Integral capture and/or fission rates have been reported earlier for several actinides irradiated in the fast neutron field of the Coupled Fast Reactivity Measurements Facility (CFRMF). These nuclides include /sup 232/Th, /sup 233/U, /sup 235/U, /sup 238/U, /sup 237/Np, /sup 239/Pu, /sup 240/Pu, /sup 242/Pu, /sup 241/Am and /sup 243/Am. This paper forucses on the utilization of these integral data for testing the respective cross sections on ENDF/B-V. Integral cross sections derived from the me… more
Date: January 1, 1982
Creator: Anderl, R. A.
Partner: UNT Libraries Government Documents Department
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Releases of radioactivity at the Savannah River Plant, 1954-1980

Description: This report contains summaries of releases of radioactivity to onsite seepage basins and to plant effluents for each year since plant startup (1954 through 1980). Releases for the years 1954 through 1959 were reassessed in 1974 and assigned release values for specific long-lived radionuclides. These long-lived radionuclides (half-lives greater than 1 year) are the only radionuclides included for the years 1954 through 1970. Since 1970 all detectable radionuclides have been included. Measured mi… more
Date: January 1, 1982
Creator: Ashley, C.; Zeigler, C. C. & Culp, P. A.
Partner: UNT Libraries Government Documents Department
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Studies of the interactions of ionizing radiations with communications materials

Description: Various models were developed for calculating the energy loss per unit length, or stopping power, and the inelastic mean free path for electrons in a material. We have included both organic materials such as polyethylene and inorganic materials such as SiO/sub 2/. In each case, the calculated values of stopping power and mean free path have been compared with experimental values where available and, in the case of mean free paths for organic materials, with those predicted from our universal fo… more
Date: January 1, 1982
Creator: Ashley, J.C. & Williams, M.W.
Partner: UNT Libraries Government Documents Department
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Geothermal heating

Description: The aim of the study is to demonstrate the viability of geothermal heating projects in energy and economic terms and to provide nomograms from which an initial estimate may be made without having to use data-processing facilities. The effect of flow rate and temperature of the geothermal water on drilling and on the network, and the effect of climate on the type of housing are considered.
Date: January 1, 1982
Creator: Aureille, M.
Partner: UNT Libraries Government Documents Department
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Approach to Numerical Safety Guidelines Based on a Core Melt Criterion. [PWR; BWR]

Description: A plausible approach is proposed for translating a single level criterion to a set of numerical guidelines. The criterion for core melt probability is used to set numerical guidelines for various core melt sequences, systems and component unavailabilities. These guidelines can be used as a means for making decisions regarding the necessity for replacing a component or improving part of a safety system. This approach is applied to estimate a set of numerical guidelines for various sequences of c… more
Date: January 1, 1982
Creator: Azarm, M. A. & Hall, R. E.
Partner: UNT Libraries Government Documents Department
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Four-feedplate operation of ZT-40 with passive crowbars

Description: This report summarizes the measurements made on the ZT-40 reversed-field pinch during the start-up on October 5, 1979, until May 1980, when the power crowbar circuitry became operational. The material contained herein pertains to the operation of ZT-40 with four current feedpoints, passive crowbars, and a nonconducting, high-purity alumina liner. The plasma properties are given for reversed-field pinches obtained either by aided or self-reversal and for nonreversed-field (stabilized) pinches. I… more
Date: January 1, 1982
Creator: Baker, D. A.; Buchenauer, C. J. & Burkhardt, L. C.
Partner: UNT Libraries Government Documents Department
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Measurement of the nu/sub. mu. / charged-current cross section

Description: The Fermilab 15-ft bubble chamber, filled with a heavy neon-hydrogen mix, was exposed to a narrow band nu/sub ..mu../ beam. Based on the observation of 830 charged current nu/sub ..mu../ interactions, the cross section was found to rise linearly with the neutrino energy in the interval, 10 GeV less than or equal to E/sub nu/ less than or equal to 240 GeV, with a constant slope of: sigma/sub nu/E/sub nu/ = (0.64 +- 0.05) 10/sup -38/ cm/sup 2/ GeV/sup -1/. This result is discussed in relation to … more
Date: January 1, 1982
Creator: Baker, N. J.; Connolly, P. L & Kahn, S. A.
Partner: UNT Libraries Government Documents Department
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Potential for substitution of geothermal energy at domestic defense installations and White Sands Missile Range

Description: Geothermal resources that might provide substitute energy at any of 76 defense installations are identified and evaluated. The geologic characteristics and related economics of potential geothermal resources located at or near the 76 installations were estimated. The geologic assessment identified 18 installations with possible geothermal resources and 4 Atlantic Coastal Plain resource configurations that represented the alternatives available to East Coast bases. These 18 locations and 4 resou… more
Date: January 1, 1982
Creator: Bakewell, C. A. & Renner, J. L.
Partner: UNT Libraries Government Documents Department
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Rummy high-altitude pressure measurements and analysis

Description: Five pressure-measurement canisters equipped with parachutes were deployed from an A7C aircraft on the Rummy test. Their altitudes above Yucca flat were over 8.5 km when the pressure pulse arrived. Three successful measurements were obtained. These time histories showed a more complicated behavior than histories obtained on Pahute Mesa tests because the Rummy event developed double spall closures over a large area. Excellent agreement was obtained between the observed pressure histories and tho… more
Date: January 1, 1982
Creator: Banister, J.R. & Hereford, W.V.
Partner: UNT Libraries Government Documents Department
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Effect of Parasitic Refrigeration on the Efficiency of Magnetic Liquefiers

Description: Our studies have shown that magnetic refrigerators have the potential to liquefy cryogens very efficiently. High efficiency is especially important for liquid hydrogen and natural gas applications where the liquefaction costs are a significant fraction of the total liquid cost. One of the characteristics of magnetic refrigerators is the requirement for a high-field superconducting magnet. Providing a 4.2-K bath for this magnet will require a small amount of parasitic refrigeration at 4.2 K even… more
Date: January 1, 1982
Creator: Barclay, J. A. & Stewart, W. F.
Partner: UNT Libraries Government Documents Department
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HARP: high-pressure argon readout for calorimeters

Description: Steel tubes of approximately 8 mm O.D., filled with Argon gas to approx. 200 bar, are considered as the active element for a charge collecting sampling calorimeter readout system. The tubes are permanently sealed and operated in the ion chamber mode, with the charge collection on a one-millimeter concentric anode. We present the motivation for such a device, including Monte Carlo predictions of performance. The method of construction and signal collection are discussed, with initial results on … more
Date: January 1, 1982
Creator: Barranco-Luque, M.; Fabjan, C. W. & Frandsen, P. K.
Partner: UNT Libraries Government Documents Department
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Development, characterization and evaluation of materials for open-cycle MHD. Quarterly report for the period ending December 1980

Description: The development and fabrication is continuing on a graded composite electrode with a refractory HfO/sub 2/-Re/sub x/O/sub y/ surface and a HfO/sub 2/-RE/sub x/O/sub y/-In/sub 2/O/sub 3/ current leadout for testing. The electrical conductivity of some oxide current leadouts were measured, and some general conclusions made regarding effects of composition. Also measured was the electrical conductivity of some yttrium chromites doped with Mg and Ca. The characterization and evaluation of Pt-coated… more
Date: January 1, 1982
Creator: Bates, J.L. & Marchant, D.D.
Partner: UNT Libraries Government Documents Department
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Development of materials for open cycle MHD. Quarterly report for the period ending March 1981

Description: The work centers around the development and fabrication of the HfO/sub 2/-RE/sub x/O/sub y/ electrodes and HfO/sub 2/-RE/sub x/O/sub y/-In/sub 2/O/sub 3/ current leadouts for testing in MHD facilities. The electrical conductivity of some potential HfO/sub 2/-RE/sub x/O/sub y/ refractory electrodes has been measured and preliminary results analyzed in relationship to structure and composition. Six potential air preheater materials, tested in the Montana State University heat exchanger, were char… more
Date: January 1, 1982
Creator: Bates, J.L. & Marchant, D.D.
Partner: UNT Libraries Government Documents Department
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Use of plutonium isotope activity ratios in dating recent sediments. [/sup 238/Pu//sup 239/Pu + /sup 240/Pu]

Description: The majority of plutonium presently in the biosphere has come from the testing of nuclear devices. In the early 1950s, the Pu-238/239+240 activity ratio of fallout debris was &gt; 0.04; in the more extensive test series of 1961 to 1962, the Pu-238/239+240 activity ratios were quite consistent at 0.02 to 0.03 and maximum fallout delivery occurred in mid-1963. A significant perturbation in Pu isotope activity ratios occurred in mid-1966 with the deposition of Pu-238 from the SNAP-9A reentry and b… more
Date: January 1, 1982
Creator: Beasley, T. M.
Partner: UNT Libraries Government Documents Department
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Permeability of stemming materials for prompt gas sampling

Description: The permeability and porosity of a suite of man-made granular aggregates and stemming materials currently in use at NTS was measured in 1-D loading as a function of stress. In all cases, the gas permeability was measured at 22 MPa after cycling up and down from 100 to 1200 MPa. Depending on stress and material, permeability decreased up to three orders of magnitude, porosity up to 63% and the sample compacted by as much as 35%. Steel ball bearings were found to retain the highest permeability o… more
Date: January 1, 1982
Creator: Beiriger, J. & Trimmer, D.
Partner: UNT Libraries Government Documents Department
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