Effects of Lower Drying-Storage Temperature on the Ductility of High-Burnup PWR Cladding

[摘要] The purpose of this research effort is to determine the effects of canister and/or cask drying and storage on radial hydride precipitation in, and potential embrittlement of, high-burnup (HBU) pressurized water reactor (PWR) cladding alloys during cooling for a range of peak drying-storage temperatures (PCT) and hoop stresses. Extensive precipitation of radial hydrides could lower the failure hoop stresses and strains, relative to limits established for as-irradiated cladding from discharged fuel rods stored in pools, at temperatures below the ductile-to-brittle transition temperature (DBTT).

[发布日期] 2016-08-30

[学科分类] 核能源与工程

[关键词] Cladding integrity;Spent fuel;radial hydrides;storage