Document: NUREG-0800
Document ID: 5cdeed4a-6cd5-4840-90c0-5159fbf2c9f0
Document Type: srp
Title: CHILLED WATER
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1409/ML14093A350.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.2.7
CFR Part: 
CFR Title: 

Content:
following type to be included in the staff’s safety evaluation report. The reviewer also states the bases for those conclusions. The VWS includes pumps, heat exchangers, chillers, valves and piping, expansion tanks, makeup piping, and the points of connection or interfaces with other systems. Portions of the VWS necessary for safe shutdown and accident prevention or mitigation are designed to seismic Category I and Quality Group C requirements. After review of the applicant’s proposed design criteria, design bases, and safety classification for the VWS as to the requirements for adequate cooling water for the safety-related ECCS components, HVAC, and reactor auxiliary equipment for all conditions of plant operation, the staff concludes that the design of the VWS is acceptable and meets the requirements of GDCs 1, 2, 4, 5, 44, 45 and 46. These conclusions are based on the following findings. 9.2.7-28 Draft Revision 0 – July 2014 The specific areas of review for the safety-related VWS are as listed below. Additionally, the nonsafety-related areas of review, including RTNSS B and C functions, are shown below each area of review for the safety-related VWS in bold-italics. 1. The applicant meets GDC 1 requirements for the VWS. Acceptance is based on the SSCs important to safety as being designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety functions to be performed. Recognized codes and standards shall be identified and evaluated to determine their applicability, adequacy, and sufficiency and shall be supplemented or modified as necessary to assure a quality product. Appropriate records of the design, fabrication, erection, and testing of SSCs important to safety shall be maintained by or under the control of the nuclear power unit licensee throughout the life of the unit. 2. The applicant meets GDC 2 requirements for system safety-related portions capable of withstanding the effects of natural phenomena such