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Ignition inhibitors for cellulosic materials. [Fire retardants; effects of irradiation]

Description: By exposing samples to various irradiance levels from a calibrated thermal radiation source, the ignition responses of blackened alpha-cellulose and cotton cloth with and without fire-retardant additives were compared. Samples treated with retardant compounds which showed the most promise were then isothermally pyrolyzed in air for comparisons between the pyrolysis rates. Alpha-cellulose samples containing a mixture of boric acid, borax, and ammonium di-hydrogen phosphate could not be ignited b… more
Date: April 5, 1976
Creator: Alvares, N. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Objective function for the environmental assessment of waste

Description: Various waste management systems were examined in order to determine what the environmental impacts might be and to rank the relative importance of those impacts. This examination determined that radiation dose to man was the most significant, and probably overriding, impact. This report describes methods of providing an objective function for dose to man. The search for an objective function began with a reading of Federal Regulations and the output of various standard setting councils and com… more
Date: October 5, 1976
Creator: Toy, A. J.; Boegel, J. & Cohen, J. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Estimating ISABELLE shielding requirements

Description: Estimates were made of the shielding thicknesses required at various points around the ISABELLE ring. Both hadron and muon requirements are considered. Radiation levels at the outside of the shield and at the BNL site boundary are kept at or below 1000 mrem per year and 5 mrem/year respectively. Muon requirements are based on the Wang formula for pion spectra, and the hadron requirements on the hadron cascade program CYLKAZ of Ranft. A muon shield thickness of 77 meters of sand is indicated out… more
Date: April 5, 1976
Creator: Stevens, A. J. & Thorndike, A. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Working model for Ge(Li) detector counting efficiencies

Description: A practical model has been developed that is capable of describing the overall Ge(Li) detection efficiency as a function of several known or measurable parameters such as gamma-ray energy, source-to-detector distance, detector dimensions, source extension (area and volume), source composition, and external absorbers. The algorithms of this model permit the evaluation of a large variety of sample shapes, sizes, material compositions, and source strengths with a single initial detector calibratio… more
Date: May 5, 1976
Creator: Gunnink, R. & Niday, J. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Terminal storage of radioactive waste in geologic formations

Description: The principal aim of the National Waste Terminal Storage (NWTS) program is to develop pilot plants and, ultimately, repositories in several different rock formations in various parts of the country. Rocks such as salt, shale, limestone, granite, schists, and serpentinite may all qualify as host media for the disposition of radioactive wastes in the proper environments. In general, the only requirement for any rock formation or storage site is that it contain any emplaced wastes for so long as i… more
Date: July 5, 1976
Creator: Lomenick, T. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

National Waste Terminal Storage Program

Description: Objective of this program is to provide facilities (Federal repositories) in various deep geologic formations at several locations in USA for the safe disposal of commercial radioactive waste from power reactors. The four types of containerized waste are described. The steps for developing the repositories are outlined. (DLC)
Date: October 5, 1976
Creator: Zerby, C. D.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Seismic spectra of events at regional distances. [About 40 underground nuclear explosions at NTS]

Description: About 40 underground nuclear explosions detonated at the Nevada Test Site (NTS) were chosen for analysis of their spectra and any relationships they might have to source parameters such as yield, depth of burial, etc. The sample covered a large yield range (less than 20 kt to greater than 1 Mt). Broadband (0.05 to 20 Hz) data recorded by the four-station seismic network operated by Lawrence Livermore Laboratory were analyzed in a search for unusual explosion signatures in their spectra. Long ti… more
Date: April 5, 1976
Creator: Springer, D. L. & Denny, M. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comparing structural loads in large pools evaluated with the LUSH code and current design methods

Description: Large pools for storing spent fuel elements from nuclear reactors are being proposed to augment the present storage capacity of pools located at nuclear power plants and fuel reprocessing plants. These pools will be part of either independent spent fuel storage installations or large reprocessing plants. Because of the large size of the pools, seismic loads are of significant interest, and in particular the adequacy of current design methods for calculating seismic loads was of special concern.… more
Date: November 5, 1976
Creator: Dong, R. G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Homogeneous catalytic hydrogenations of complex carbonaceous substrates. [16 references]

Description: Results of homogeneous catalytic hydrogenation of complex unsaturated substrates including coal and coal-derived materials are reported, with organic soluble molecular complexes as catalysts. Among the substrates used were Hvab coal, solvent-refined coal, and COED pyrolysate. The hydrogenations were carried out in an autoclave. The results are summarized in tables.
Date: November 5, 1976
Creator: Cox, J. L.; Wilcox, W. A. & Roberts, G. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of the thermal yield from the subsurface explosions. [1 kt source buried at 0. 5, 1. 5 and 3. 0 meters]

Description: The objective of this investigation is to determine the upper limits on the thermal yield of a 1 kt source detonated at shallow depths. Three problems were computed for the depths of burial of 0.5, 1.5, and 3 m. The source is an iron bubble with 30 cm radius and 25 kg of mass. The computation was done on the CEL code. The results show that the relative thermal yield is no more than 6 percent, and that it vanishes at DOB of about 4 m. The computed blast strength is plotted against the range. The… more
Date: August 5, 1976
Creator: Kamegai, M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Four-D propagation code for high-energy laser beams: a user's manual

Description: This manual describes the use and structure of the June 30, 1976 version of the Four-D propagation code for high energy laser beams. It provides selected sample output from a typical run and from several debug runs. The Four-D code now includes the important noncoplanar scenario feature. Many problems that required excessive computer time can now be meaningfully simulated as steady-state noncoplanar problems with short run times.
Date: August 5, 1976
Creator: Morris, J. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Plane stress calculations with a two dimensional elastic-plastic computer program. [HEMP]

Description: In the study of ductile fracture it is useful to simulate fracture on the computer under plane stress conditions. In general, this is a three dimensional problem. Presented here is a method for adapting a two dimensional elastic-plastic computer program to calculate problems in plane stress as well as plane strain geometry. A simulation of a tension test of a flat aluminum plate pulled to failure is calculated with the modified two dimensional program. The results are compared with a fully thre… more
Date: April 5, 1976
Creator: Wilkins, M. L. & Guinan, M. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Use of the Borrmann Effect to Produce Nearly Monoenergetic X Rays

Description: The use of the Borrmann effect to produce nearly monoenergetic x rays is described. Both theoretical and experimental results are presented for the energy range from 15 to 55 keV. Peak shape, full-widths at half-maximum, and intensities are discussed. In addition, a brief description of a computer code for calculating the theoretical results is given.
Date: October 5, 1976
Creator: Prevo, C. T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Environmental monitoring report for Pantex Plant covering 1975

Description: During 1975 Pantex Plant conducted a monitoring program to determine the concentration of specific radioactive and non-radioactive species in the local environment. Although the plant activities involve the handling of significant quantities of uranium, plutonium and tritium, only small releases of uranium (depleted in the isotope /sup 235/U) and tritium occurred which could have affected the local environment. Monitoring data indicate that concentrations of these nuclides in the environment ar… more
Date: March 5, 1976
Creator: Alexander, R.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Technical proposal: design and fabrication of a superalloy BIPS workhorse loop and technical assessment of an optimized superalloy flight system

Description: An add-on program is proposed to the existing Brayton Isotope Power System (BIPS) Contract E(04-3)-1123. The proposed program includes the design and fabrication of a superalloy BIPS ''workhorse'' loop and the technical assessment of an optimized superalloy flight system (FS).
Date: March 5, 1976
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Preliminary design calculations for a field-reversed mirror reactor

Description: The field-reversed-mirror (FRM) is a plasma-confinement scheme that uses the diamagnetic current of the deuterium-tritium (D-T) fuel plasma to convert the open-field pattern of a conventional mirror machine into a closed-field pattern that should have considerably improved plasma-confinement properties. If realized, this improvement in confinement will considerably improve the energy gain of the mirror reactor and will reduce the cost of producing energy. The FRM device is described and compare… more
Date: November 5, 1976
Creator: Condit, W. C.; Carlson, G. A.; Devoto, R. S.; Doggett, J. N.; Neef, W. S. & Hanson, J. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Exploding pusher targets illuminated using f/1 lenses at approx. 0. 4 TW

Description: A series of laser fusion microimplosion experiments have been performed with the LLL two beam laser system JANUS. The JANUS laser is capable of focusing up to 400 gigawatts of 1.06 ..mu..m laser power (32J in 80 psec) on microscopic laser fusion targets, producing intensities in excess of 10/sup 17/ w/cm/sup 2/. In these experiments the targets were Deuterium--Tritium (DT) gas filled, thin walled (.5 to 1.0 ..mu..m) SiO/sub 2/ microshells with diameters of 40 to 100 ..mu..m. Targets with these … more
Date: October 5, 1976
Creator: Storm, E. K.; Ahlstrom, H. G. & Holzrichter, J. F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Flow-regime characterization for horizontal two-phase steam flow

Description: A relatively simple model, using Baker parameters, is described and applied to flow-regime data generated by high speed photography of two-phase steam flow. The experiments were conducted at the Geothermal Test Facility (GTF) at Lawrence Livermore Laboratory. Although results depend somewhat on the personal judgment and interpretation of the observer, the model was found to give a reasonable prediction of the flow regime for the flow ranges available in 1- and 2-in.-diam pipes.
Date: October 5, 1976
Creator: Calder, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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