Document: NUREG-0800
Document ID: 6cf2fb95-08c8-493a-b5b1-4d05d609e5c4
Document Type: srp
Title: STATION SERVICE WATER SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070512.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.2.1
CFR Part: 
CFR Title: 

Content:
he For BWRs, the SAR is reviewed to assure that the applicant has described all the 48 automatic and manual actions necessary for proper functioning of the service water system when the main feedwater system is not operable. For any manual action necessary, the reviewer verifies that procedural controls are proposed to assure that the action is taken in a timely manner, in accordance with Item 3 of IE Bulletin 79-08 (Reference 15). The design will be acceptable in this regard if sufficient detail is 49 DRAFT Rev. 5 - April 1996 9.2.1-10 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 II.K.1.22 of NUREG-0737 or 10 CFR 50.34(f)(2)(xxi) are propertly implemented.50 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. Guidance for water hammer prevention and mitigation is found in NUREG-0927 (Reference 10).51 7. In order to address concerns related to SWS fouling, the reviewer verifies that the applicant has addressed the following SWS design provisions and inspection activities consistent with Generic Letter 89-13 (Reference 12) and Supplement 1 to GL 89-13 (Reference 13): a. A program of surveillance and control techniques to significantly reduce the incidence of flow blockage problems as a result of biofouling. b. A test program, consisting of an initial test program and a periodic retest program, to verify the heat transfer capability of all safety-related heat exchangers cooled by service water. c. A routine inspection and maintenance program for SWS piping and components to assure that corrosion, erosion, protective coating failure, silting, and biofouling cannot degrade the performance of the