Document: NUREG-0800
Document ID: 6d6e43af-f998-40fc-9062-1277b9cebd60
Document Type: srp
Title: REACTOR AUXILIARY COOLING WATER SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350544.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.2.2
CFR Part: 
CFR Title: 

Content:
view procedures to take account of a proposed unique design will be such as to ensure that the system meets the criteria of subsection II. The reviewer will select and emphasize material from this SRP section, as may be appropriate for a particular case. 1. The information provided in the SAR pertaining to the design bases and design criteria, and the system description section are reviewed to verify that the equipment used and the minimum system heat transfer and flow requirements for normal plant operations are identified. A review of the system piping and instrumentation diagrams (P&IDs) will show which components of the system are used to: a. Remove heat from the reactor primary coolant system necessary to achieve a safe reactor shutdown. b. Provide essential cooling for containment components or systems such as the sprays, ventilation coolers, or sump equipment. c. Provide cooling for decay heat removal equipment. d. Provide cooling for emergency core cooling pump bearings or other emergency core cooling equipment necessary to prevent or mitigate the consequences of an accident. 2. The system performance requirements section is reviewed to determine that it describes allowable component operational degradation (e.g., pump leak- age) and describes the procedures that will be followed to detect and correct these conditions when degradation becomes excessive. 3. The reviewer, using the results of failure-modes and -effects analyses, determines that the system is capable of sustaining the loss of any active component and, on the basis of previously approved systems or independent calculations, that the minimum system requirements (cooling load and flow) are met for these failure conditions. The system P&IDs, layout drawings, and component descriptions and characteristics are then reviewed for the following points: a. Essential portions of the CWS are correctly identified and are isol- able from the nonessential portions of the system. The P&IDs are reviewed to