Strategies of factory tests of safety digital instrumentation and control system in nuclear power plants

Combining the domestic practice and the experiences in the nuclear safety review of the factory tests (FT) of the safety digital instrument and control system (DCS), DCS FT is identified as several stages according to nuclear safety regulations and standards. The results show that the safety DCS function and performance should be tested. FOAK test strategy should be used discreetly, and not suggested to be used for the first system. (authors)