Document: NUREG-0800
Document ID: 98a045ec-37ef-46fc-9eaa-9e695c2d6e53
Document Type: srp
Title: OFFSITE POWER SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350488.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.2
CFR Part: 
CFR Title: 

Content:
ng Branch (EHEB) will provide to PSB upon request information on the design basis, high and low atmospheric temperatures, high wind, rain, ice, and snow conditions. This information Will be considered during the review to assure that the design minimizes in accordance with GDC 17 the effects of these conditions. Items such as switchyard and transformer locations and associated trans- mission lines could be affected by these conditions. 6. To assure that the requirements of General Design Criterion 4 are satisfied, the ASB, on request, will 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 8.2-7 Rev. 3 - July 1983 will be used to determine the possibility of simultaneous loss of both paths of preferred power. 7. To assure that the requirements of General Design Criterion 5 are satis- fied, the structures, systems, and components of the preferred power systems will be examined to identify any that are shared between units of a multi- unit station. These will be reviewed to ascertain that they have sufficient capacity and capability of performing all required safety functions in the event of an accident in one unit, with a simultaneous orderly shutdown and cooldown of the remaining units. Review of the design criteria should establish that the capacity and capability of incoming lines, power sources, and transformers for each required circuit have margin to achieve this. Spurious or false accident signals should not overload these circuits. SRP Section 8.3 further discusses spurious or false accident signal considerations. 8. The preferred power system instrumentation provided to monitor variables and equipment status should be identified during the electrical schematic and system description