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:
nd flow) for the degraded conditions. The system P&IDs, layout drawings, and component descriptions and characteristics are then reviewed for the following points: a. Essential portions of the SWS are correctly identified and are isolable from the non-essential portions of the system. The P&IDs are reviewed to verify that they clearly indicate the physical division between each portion and indicate the required classification changes. System drawings are also reviewed to see that they show the means for accomplishing isolation and the SAR description is DRAFT Rev. 5 - April 1996 9.2.1-8 reviewed to identify minimum performance requirements for the isolation valves. The drawings and descriptions are reviewed to verify that automatically operated isolation valves separate non-essential portions and components from the essential portions. Special consideration is given to the case of redundant interconnected trains to assure the operation of at least one safety-related train by proper isolation in the event of an accident or transient. b. Essential portions of the SWS, including the isolation valves separating essential and non-essential portions, are classified Quality Group C and seismic Category 1. Components and system descriptions in the SAR that identify mechanical and performance characteristics are reviewed to verify that the above seismic and safety classifications have been included, and that the P&IDs indicate any points of change in piping quality group classification. c. Design provisions have been made that permit appropriate inservice inspection and functional testing of system components important to safety. It will be acceptable if the SAR information delineates a testing and inspection program and if the system drawings show the necessary test recirculation 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