IEEE 765-2002

This standard describes the design criteria of the preferred power supply (PPS) and its interfaces with the class 1E power system, switchyard, transmission system and the alternate ac (AAC) source. This revision adds an annex which identifies the type of interface requirements needed to ensure offsite power reliability from an Independent System Operator. The scope fo the standard remains unchanged. This standard provides PPS requirements for nuclear power plants and guidance in the areas of AAC power source interfaces with the PPS, physical independence of the PPS power and control circuits, and expanded PPS criteria for multi-unit stations. The purpose of this standard remains unchanged. This standard is being revised and an annex provided to define the attributes of the PPS that are required to ensure PPS reliability when offsite power is supplied by an entity other than the nuclear utility, such as an ISO. It is intended to provide utilities with the necessary guidance and structure to ensure PPS reliability in a deregulated environment and ensure the nuclear plant(s) licensing reqiurements and design criteria are not compromised. Revision Standard - Superseded. Revised by IEEE Std 765-2006 The design criteria of the preferred power supply (PPS) and its interfaces with the Class 1E power system, switchyard, transmission system, and alternate ac (AAC) source are described. This standard provides PPS requirements for nuclear power plants and guidance in the areas of AAC power source interfaces with PPS, physical independence of the PPS power and control circuits, and expanded PPS criteria for multi-unit stations.