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AbstractAbstract
[en] Activity ratios found in burnt nuclear fuel are characteristic of burnup and decay time after shutdown of a reactor. Cs-134/Cs-137, Cs-136/Cs-137, and Te-129/Te-132 activity ratios established for the Chernobyl fallout are compared with those calculated for different burnups by using the code system SAS 2(UHB)/ORIGEN-S(UHB). The measured activity ratios in fallout correspond to a calculated mean burnup of 12.85 +/- 0.15 GWd/ton (core average). Surprisingly, they also indicate a shutdown of the plant between 3 and 5 days before the accident occurred. The inventories of important radionuclides at the time of accident are calculated for the determined burnup and decay period of the core
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Silver, E.G. (ed.); Oak Ridge National Lab., TN (USA); p. 1-5; 1988; p. 1-5; US Gout. Printing office
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Report
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CESIUM 134, CESIUM 136, CESIUM 137, COMPUTER CALCULATIONS, FALLOUT, GRAMINEAE, INTERNAL CONVERSION RADIOISOTO, INVENTORIES, ISOTOPE RATIO, NUCLEAR POWER PLANTS, RADIOACTIVITY, REACTOR ACCIDENTS, REACTOR CORES, REACTOR SHUTDOWN, S CODES, SAMPLING, SOILS, SURFACE WATERS, TELLURIUM 129, TELLURIUM 132, USSR, WATER CHEMISTRY
ACCIDENTS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CESIUM ISOTOPES, COMPUTER CODES, DAYS LIVING RADIOISOTOPES, DEVELOPED COUNTRIES, ELECTRON CAPTURE RADIOISOTOPES, EUROPE, EVEN-EVEN NUCLEI, EVEN-ODD NUCLEI, HOURS LIVING RADIOISOTOPES, INTERMEDIATE MASS NUCLEI, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, NUCLEAR FACILITIES, NUCLEI, ODD-EVEN NUCLEI, ODD-ODD NUCLEI, PLANTS, POWER PLANTS, RADIOISOTOPES, REACTOR COMPONENTS, SECONDS LIVING RADIOISOTOPES, SHUTDOWN, TELLURIUM ISOTOPES, THERMAL POWER PLANTS, WATER TREATMENT, YEARS LIVING RADIOISOTOPES
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