Document: NUREG-0800
Document ID: 7aef037f-a817-4377-a41f-be2c1006a20b
Document Type: srp
Title: STATION SERVICE WATER SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350543.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.2.1
CFR Part: 
CFR Title: 

Content:
oncurrent single active component failure. The reviewer evaluates the failure mode and effects analysis presented in the SAR to assure function of required components, traces the availability of these components on system drawings, and checks that the SAR contains verification that mini- mum 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. 5. The SAR is reviewed to assure that the applicant has described all the automatic and manual actions necessary for proper functioning of the service water system when the main feedwater system is not operable. The design will be acceptable in this regard if sufficient detail is presented to provide reasonable assurance that the requirements of items II.K.1.22 of NUREG-0718 and II.K.1-C.1.22 of NUREG-0694 are property implemented. 6. The SAR is reviewed to assure that the applicant has committed to address the potential for water hammer in open loop systems and will provide for venting and filling of such systems, operating procedures for avoidance of water hammer, and that the system is designed to maintain functioning following an inadvertent water hammer occurrence. 9.2.1-7 Rev. 4 - June 1986 IV. EVALUATION FINDINGS The reviewer determines 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 service water system (SWS) includes all components and piping from the SWS pump intake to the points of cooling water discharge. Portions of the SWS that are necessary for safe shutdown accident prevention, or accident mitigation are designed to seismic Category I, Quality Group C requirements. Based on the review of the applicant's proposed design criteria, design bases and safety classification for the service water system regarding the requirements for continuous cooling of