The Shutdown PSA Model of the TQNPP CANDU Reactor and the Outage Risk Management

This paper presents the characteristic of Outage Nuclear Safety Management Guideline (ONSMG) for Qinshan CANDU plant and the introduction of shutdown and low-power PSA (SPSA) of TQNPP. The SPSA model is used to assess the outage configuration risk of OT109. The result and its risk insight are discussed about the two different outage working plan. In conclusion, the risk of nuclear safety and the economic are discussed based on the risk assessment result.