DECAY HEAT BENCHMARK FOR URANIUM-FREE FUELS WITH MINOR ACTINIDES
The decay heat (energy due to decay of unstable nuclei) is a small fraction of reactor power at nominal conditions, but after reactor shut-down it is the most important heat source. For taking this source into account in design and safety studies, recommendations are available for fuels of operating reactors, such as UOX and MOX. Fuels for EFIT (European Facility for Industrial Transmutation), unlike UOX and MOX, should contain a significant amount of Minor Actinides (MAs) that would influence decay heat. CEA, CIEMAT, ENEA, FZK (now KIT), PSI and SCK?CEN established a benchmark case and computed decay heat curves for MA-bearing fuels and a MOX-type fuel. The decay heat in the fuels with MAs is appreciably higher than in MOX, except for low burnup cases after short cooling times. This should be taken into account in the design of the decay heat removal system for EFIT. The obtained differences between the decay heat in MA-bearing and MOX fuels are supposed to be representative for the benchmark (or similar) conditions. More effort is needed to evaluate the uncertainties of the computed results.
Andrei Rineiski Gérald Rimpault Georgios Glinatsis Nadia Messaoudi Sandro Pelloni Aleksandra Schwenk-Ferrero Maria Carmen
KIT, 76021 Karlsruhe Germany CEA Cadarache 13108 Saint-Paul-Lez-Durance, France ENEA, 40129 Bologna,Italy SCK·CEN, 2400 Mol,Belgium PSI, 5232 Villigen Switzerland Vicente CIEMAT, 28040 Madrid,Spain
国际会议
18th International Conference on Nuclear Engineering(第18届国际核能工程大会 ICONE 18)
西安
英文
1-10
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）