The protection of nuclear power plants following a design basis event is provided automatically by
the protection systems as defined by IEEE Std 279-1971 (ANSI N42.7-1972), Criteria for Protection
Systems for Nuclear Power Generating Stations, and by required specified manual actions.
Following the automatic initiation of the protection systems, the operator has the responsibility
of bringing the nuclear power plant to and maintaining it in a safe condition. The operator requires specific information to assist him in fulfillling this role. The scope of this document is limited to the design criteria for the monitoring display instrumentation required b y the operator during the post accident period.