Document: NUREG-0800
Document ID: 81256f55-72dd-4777-9472-f373c71c4554
Document Type: srp
Title: AC POWER SYSTEMS (ONSITE)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550065.pdf
Revision Date: 2023-06
Chapter: 8
Section ID: 8.3.1
CFR Part: 
CFR Title: 

Content:
ystems. IEEE Std 603, as endorsed by Regulatory Guide 1.153, provides criteria used to evaluate all aspects of the instrumentation, control, and electrical portions of auxiliary supporting systems and features, including basic criteria that call for auxiliary supporting systems and features to satisfy the same criteria as the supported safety systems. The reviewer will verify the design adequacy of the instrumentation, control, and electrical aspects of the auxiliary supporting systems and features to ensure that their design conforms to the same criteria as those for the systems that they support. Hence, the review procedure to be followed for ascertaining the adequacy of these systems and features is the same as that discussed herein for the onsite systems. In essence, the reviewer first becomes familiar with the purpose and operation of each auxiliary supporting system and feature, including its components arrangement as depicted on functional piping and instrumentation diagrams (P&IDs). Subsequently, the design criteria, analyses, and description and implementation of the instrumentation, control, and electrical equipment, as depicted on electrical drawings, are reviewed to verify that the design is consistent with satisfying the acceptance criteria for Class 1E systems. In addition, it is verified that the auxiliary supporting system redundant instrumentation, control devices, and loads are examined to verify that they are powered 8.3.1-32 Revision 3 - March 2007 from the same redundant distribution system as the system that they support. The reviewer will also verify that the auxiliary supporting systems that are associated with the emergency diesel engine - such as the fuel oil storage and transfer system, cooling water system, starting air system, and lubrication system - are in accordance with the acceptance criteria. The organization responsible for plant systems reviews the other aspects of the auxiliary supporting systems to verify that the design,