Annealing behaviour of irradiated HTGR fuel element at high temperature
Description
The relative release of some fission products, namely Kr-85, Cs-134 and Cs-137, due to annealing of irradiated HTGR spherical fuel elements containing TRISO coated particles was investigated at high temperatures simulating accident condition. The annealing was carried out at temperatures from 1500 C to 2500 C after preheating at 1250 C. The annealing time ranged from six hours up to 1000 hours. The relative release of fission products increased with time and / or temperature. The maximum release for Kr-85 occurred 2500 C after six hours, and for Cs-134 and Cs-137 occurred at 2400 C after six hours. The post annealing test showed that no Ag-110 remained in the microspheres and that most of the Cs-134 and Cs-137 were released from the spheres to the TRISO coating.3 figs, 6 tab
Additional details
Publishing Information
- Journal Title
- Arab Journal of Nuclear Sciences and Applications
- Journal Volume
- 27
- Journal Issue
- 3
- Journal Page Range
- p. 155-172.
- CODEN
- AJNADV
INIS
- Country of Publication
- Egypt
- Country of Input or Organization
- Egypt
- INIS RN
- 26021979
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ANNEALING; BURNUP; CESIUM 134; CESIUM 137; COATED FUEL PARTICLES; EXPERIMENTAL DATA; FISSION PRODUCTS; FUEL ELEMENTS; HTGR TYPE REACTORS; KRYPTON 85; MICROSPHERES; TEMPERATURE RANGE 1000-4000 K
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CESIUM ISOTOPES; DATA; ELECTRON CAPTURE RADIOISOTOPES; EVEN-ODD NUCLEI; FUEL PARTICLES; GAS COOLED REACTORS; GRAPHITE MODERATED REACTORS; HEAT TREATMENTS; HOURS LIVING RADIOISOTOPES; INFORMATION; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; KRYPTON ISOTOPES; MATERIALS; MICROSEC LIVING RADIOISOTOPES; NUCLEI; NUMERICAL DATA; ODD-EVEN NUCLEI; ODD-ODD NUCLEI; RADIOACTIVE MATERIALS; RADIOISOTOPES; REACTOR COMPONENTS; REACTORS; TEMPERATURE RANGE; YEARS LIVING RADIOISOTOPES