FAILURE DOWNGRADE RUNNING METHOD AND SYSTEM FOR NUCLEAR POWER PLANT CONTROL ROOM

摘要

The present invention provides a failure downgrade operation method and system for a nuclear power plant control room. The method includes: using a KIC system to construct a pre-defense line in a control room defense in depth system (S11); using an ACP and an ECP to construct a main defense line in the control room defense in depth system (S12); using a DHP panel to construct a diversity defense line in the control room defense in depth system (S13); and using an SAP panel to construct a serious accident mitigation line in the control room defense in depth system (S14). Positioning of a device belonging to a serious accident defense line in a failure downgrade operation strategy is considered, the problem of the mixed arrangement of devices at different defense in depth levels and in different failure running modes is solved, the failure downgrade operation strategy of the control room is clear, and the related dedicated devices are configured to significantly reduce the difficulty that an operator handles failures of HSIs, reduce the human error probability, and improve the safety of a nuclear power plant.