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:
on loops around pumps or isolation valves that would be required by this program. d. The review of seismic design is performed by the structural and geotechnical reviewer of EB EMEB and the review for seismic and quality group 46 classification is performed by the mechanical engineering reviewer of EB EMEB as indicated in subsection I of this SRP section. 47 3. The reviewer determines that the safety function of the system will be maintained, as required, in the event of adverse environmental phenomena such as earthquakes, tornadoes, hurricanes, and floods, or in the event of certain pipe breaks or loss of offsite power. The reviewer uses engineering judgment, the results of a failure mode and effects analyses, and the results of reviews performed under other SRP sections to verify the following: a. The failure of portions of the system or of other systems not designed to seismic Category I and located close to essential portions of the system, or of non-seismic Category I structures that house, support, or are close to essential portions of the SWS, will not preclude operation of the essential portions of the SWS. Reference to SAR Chapter 2 describing site features and the general arrangement and layout drawings will be necessary as well as the SAR tabulation of seismic design classifications for structures and systems. Statements in the SAR that verify that the above conditions are met are acceptable. (CP) b. The essential portions of the SWS are protected from the effects of floods, hurricanes, tornadoes, and internally or externally generated missiles. Flood protection and missile protection criteria are discussed and evaluated in detail under the Section 3 series of the SRP. The reviewer will utilize the procedures identified in these SRP sections to assure that the analyses presented are valid. A statement to the effect that the system is located in a seismic Category I structure that is tornado missile and flood protected or that components of the system will