Advanced Reactor Safety Research at PNC,1990

not registered

An annual plan of FBR safety research had been made since 1986 by Japanese Nuclear Safety Commission. This plan focuses on the safety philosophy which fully utilizes the intrinsic characteristics of FBRs and which implements the safety technologies of FBRs. Items examined for establishing the safety philosophy includes : * defense-in-depth * safety grade classification * multi-barriers against radioactivity, and * severe accidents. In selecting research items, the following four fields of research were identified in relation to the safety philosophy : 1) research relating to safety design and safety evaluation principles,2) research on accident prevention and mitigation,3) research on (design basis) accidents evaluation, and 4) research on severe accidents. ATR safety research plan has been also revisedz. Its three research fields are 1) research on normal operations and anticipated operational occurrences, 2) research on accident conditions, and 3) research on severe accidents. T