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Technical Feasibility of Krypton-85 Storage in Sodalite

Description: Based on these experimental results, the process that is technically feasible for a reference 2000 metric ton of heavy metal (MTHM) per year reprocessing plant producing approx. 17 MCi or approx. 190 m/sup 3/ at STP would encapsulate krypton at approx. 20 cm/sup 3//g from krypton at temperatures greater than 575/sup 0/C and pressures greater than 1600 atm with one batch a day in a 58-L high pressure vessel. Based on preliminary measurements at 500/sup 0/C, the same process also would be feasibl… more
Date: January 1, 1979
Creator: Benedict, R. W.; Christensen, A. B.; Del Debbio, J. A.; Keller, J. H. & Knecht, D. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Laboratory evaluation of an ion exchange process for removing cesium from Purex acid waste solutions

Description: A laboratory investigation was made of an ion exchange process for removing radioactive cesium from acidic Purex waste. Twenty-seven laboratory ion exchanger runs are reported. Parameters investigated include comparison of Zeolon-900, AW-500 and Duolite ARC-359 ion exchangers, pH of feed solutions, composition of sodium scrub solutions, composition of eluting solutions and overflow versus downflow elution. The cause and rate of zeolite degradation was investigated.
Date: June 1, 1979
Creator: Buckingham, J.S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Catalytic oxidation of tritium in air at ambient temperature

Description: Tritium/air oxidation kinetic data are derived from ambient-temperature measurements carried out with three precious-metal catalysts. Each catalyst consists of a high-surface-area substrate in pelletized form, onto which precious metal has been dispersed. The metal/substrate combinations investigated are platinum/alumina, palladium/kaolin, and palladium/zeolite. Electron-microprobe scans reveal that the dispersed metal is deposited in each case near the outer surface of the pellet, with metal c… more
Date: July 1, 1979
Creator: Sherwood, A.E.; Monahan, B.G.; McWilliams, R.A.; Uribe, F.S. & Griffith, C.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development of new catalysts for coal-liquids refining. First quarterly report, 1 January 1979-31 March 1979

Description: Two existing hydrotreating units were redesigned to increase their operating range, and the necessary parts ordered. A new microactivity testing (MAT) unit was designed, and the parts ordered. Base-line testing procedures were improved, and the effect of unit parameters on catalytic activity was studied with borrowed Filtrol testing units. Synthesis and characterization of various catalytic components and matrix modifications was carried out. Sodium-Y zeolites with different silica-alumina rati… more
Date: April 1, 1979
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Confinement of airborne radioactivity. Progress report, January--December 1977

Description: Iodine penetration and ignition temperature data obtained from carbon that was removed from the Savannah River Plant (SRP) confinement system show that Type GX-176 carbon has a useful life of at least 30 months. Development studies on new halogen adsorbers showed that coal- and petroleum-base carbons can be treated in the laboratory to retain methyl iodide as well as, or better than, commercial coconut-base carbons. Radiation stability tests for iodine-loaded, silver-exchanged zeolite (AgX) sho… more
Date: January 1, 1979
Creator: Evans, A.G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Literature survey: methods for the removal of iodine species from off-gases and liquid waste streams of nuclear power and nuclear fuel reprocessing plants, with emphasis on solid sorbents

Description: Emphasis was focused on the operating parameters that most strongly affected the optimization of the processes used to treat actual process or feed streams which simulated actual compositions occurring at nuclear facilities. These parameters included gas superficial velocity, temperature, types of organic and inorganic contaminants, relative humidity, iodine feed-gas concentration, iodine species, column design (for both acid-scrub and solid sorbent-based processes), sorbent particle size, run … more
Date: January 1, 1979
Creator: Holladay, D.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Petrology of tuff units from the J-13 drill site, Jackass Flats, Nevada

Description: The J-13 drill hole, located in Jackass Flats, Nevada Test Site, has penetrated 125 m of alluvium and 932 m of tuff. Most of the tuff deposits consist of welded tuffs; glass phases in the tuffs have been replaced by authigenic minerals, mainly K-feldspar, silica, and zeolites. The zonation of authigenic minerals, with depth, indictes that alteration of glass phases and filling of vugs occurred during welding and compaction of tuff units soon after deposition and by interaction with groundwater.… more
Date: December 31, 1979
Creator: Heiken, G. H. & Bevier, M. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mineralogy and petrology of tuff units from a UE25a-1 drill site, Yucca Mountain, Nevada

Description: Drill hole UE25a-1 has penetrated tuffs of Tertiary age which contain two major zeolitized horizons at depths below 380 m. These horizons are restricted to low-density, high-porosity nonwelded tuffs below the basal vitrophyre of the Topopah Springs Member of the Paintbrush Tuff (approximately 70 m above the current water table), and interfinger with more-densely-welded devitrified tuffs of granophyric mineralogy. Zeolites occur as glass pyroclast replacement, vug linings, and fracture fillings.… more
Date: November 1, 1979
Creator: Sykes, M.L.; Heiken, G.H. & Smyth, J.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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