Document: NUREG-0800
Document ID: 6fd4d885-bb73-4ac0-9513-7365558c831e
Document Type: srp
Title: REACTOR AUXILIARY COOLING WATER SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550053.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.2.2
CFR Part: 
CFR Title: 

Content:
stems to the extent practicable. Where a system for RCP seal injection/cooling is required specifically to meet the station blackout duration, the system should comply with RG 1.155, Position C.3.3.4, on ability to actuate and control the system from appropriate locations. As an alternative to independent RCP seal cooling, the applicant may provide adequate testing data in support of the proposed RCP seal design and demonstrate maintenance of seal integrity after extended loss of seal injection and cooling. The capability of RCP seals to maintain their integrity following an external loss of cooling water is reviewed by the secondary review organization. F. Design provisions are made for isolation of component cooling water supply and return lines to the RCP by remote manual means only. Design provisions are made for the control room operator to have the necessary information to determine when it is appropriate to isolate the lines by remote manual means and how soon the lines should be isolated if they become release paths from the containment during a LOCA. 5. The primary review organization verifies whether the system is designed to maintain system functions as required in such adverse environmental phenomena as earthquakes, tornadoes, hurricanes, and floods. The reviewer evaluates the system using engineering judgment and the results of failure-modes and -effects analyses to determine the following: A. The failure of portions of the system or of other systems not designed to seismic Category I standards and located close to essential portions of the system or of nonseismic Category I structures that house, support, or are close to essential portions of the CWS does not preclude essential functions. The review identifies these nonseismic category components or piping and ensures appropriate provision of isolation capabilities in failure. Reference to SAR Chapter 2, describing site features and the general arrangement and layout drawings, is necessary as well as