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:
wed to determine that the degree of protection provided is adequate. 6. The descriptive information, P&IDs, CWS drawings, and failure-modes and -effects analyses in the SAR are reviewed to ensure that essential por- tions of the system will function following design basis accidents assuming a concurrent single, active component failure. The reviewer evaluates the information presented in the SAR to determine the ability of required components to function, traces the availability of these com- ponents on system drawings, and checks that the SAR information contains verification that minimum system flow and heat transfer requirements are met for each accident situation for the required time spans. For each case, the design will be acceptable if minimum system requirements are met. 7. The SAR is reviewed to assure that the applicant has committed to address the potential for water hammer in the auxiliary cooling water systems and will provide means for prevention, or avoidance, such as 9.2.2-9 Rev. 3 - June 1986 venting and filling capability and operating procedures for avoidance of water hammer. IV. EVALUATION FINDINGS The reviewer verifies that sufficient information has been provided and his review supports conclusions of the following type to be included in the staff's safety evaluation report: The reactor auxiliary cooling water systems include pumps, heat exchangers, valves and piping, expansion tanks, makeup piping, and the points of con- nection or interfaces with other systems. Portions of the reactor auxil- iary cooling water systems that are necessary for safe shutdown, accident prevention or accident mitigation are designed to seismic Category I and Quality Group C requirements. Based on the review of the applicant's pro- posed design criteria, design bases, and safety classification for the reactor auxiliary cooling water systems with regard to the requirements for providing adequate cooling water for the safety-related ECCS components and reactor