A stylized approach for evaluation of incremental change in CANDU ROP/NOP trip functional failure probability under aging conditions
Abstract of a technical presentation presented at:
The 19th Pacific Basin Nuclear Conference (PBNC 2014)
Vancouver, British Columbia, Canada,
August 24–28, 2014.
Dumitru Serghiuta and John Tholammakkil
Canadian Nuclear Safety Commission (CNSC)
Ottawa, Ontario, Canada
This paper discusses a stylized approach to evaluation of incremental change in the CANDU ROP/NOP trip functional failure probability under aging conditions and its use for evaluation of incremental change in risk for a postulated slow LOR event and independent risk-informed verification of adequacy of ROP/NOP trip setpoint value under aging conditions. The proposed stylized method is not a substitute for the design ROP/NOP methodology for calculation of ROP/NOP required trip setpoint.
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