Document: NUREG-0800
Document ID: 97120913-d26f-4324-ab62-22f3f5b73925
Document Type: srp
Title: and 8.3.2.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0636/ML063600410.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.1
CFR Part: 
CFR Title: 

Content:
ransformer cooling, overhead transmission lines, underground or inaccessible power and control cables could be affected by these conditions. Operating experience provides additional information on the effects of severe heat and cold on electrical system equipment (References 23 and 28) and on the effects of protracted submergence and wet environments on underground electric cables (Reference 26). Communication links between the plant operators and local TSO/ISOs serve as a means to obtain timely information on power grid operating conditions and status to verify the operability of the offsite power grid in accordance with the requirements of the plant’s technical specifications. Communications with offsite entities are also important for restoration of offsite power in the event of a LOOP or station blackout. The plant’s 8.2-22 Revision 4 - March 2007 offsite communications equipment and protocols, communication contingency procedures, communications circuit routing, and telemetry links used to monitor the power grid and to verify and maintain grid stability and operability should be reviewed to determine that they are secure and will continue to function during severe weather events causing regional effects. Operating experience provides additional information on offsite communications capability and integrity during severe weather events (Reference 22). 6. To ensure that the requirements of GDC 4 are satisfied, the organization responsible for the review of plant systems should review the location of structures, systems, and components of the preferred power system to determine the protection provided against dynamic effects, including effects of missiles, pipe whipping, and discharging fluids, that may result from equipment failures and from events and conditions outside the station. This information should be used to determine the possibility of simultaneous loss of both paths of preferred power. 7. To ensure that the requirements of GDC 5 are satisfied, the