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:
rations, AOOs, and accident conditions, assuming a single failureof a component to perform its intended safety function concurrent with the LOOP. GDC 44 requirements provide assurance that the VWS and its components will continue to perform their required safety functions, assuming a single failure of a component to perform its intended safety function concurrent with the LOOP. Note: RTNSS B SSCs may provide core cooling and heat transfer functions in the post-72 hour period. RTNSS C may provide for defense-in-depth cooling and heat transfer functions in order to meet NRC safety goal guidelines. 6. GDC 45 requires that the cooling water system shall be designed to permit appropriate periodic inspection of important components, such as heat exchangers and piping, to assure the integrity and capability of the system. GDC 45 applies to this SRP section because the reviewer evaluates the VWS for whether appropriate periodic inspection of important components (e.g., heat exchangers, chillers, and piping) ensures the integrity and capability of the system to perform its safety-related functions during normal operations, AOOs, and accident conditions. In addition, the VWS must be able to prevent or mitigate the consequences of a design basis accident. GDC 45 requirements provide assurance that important VWS components can be inspected, thereby ensuring system integrity and capability to perform design safety functions. 7. GDC 46 as to design provisions to permit appropriate periodic pressure and functional testing to assure; A. The structure and leaktight integrity of the system(s)’ components. B. The operability and the performance of active components of the system. C. The operability of the system as a whole and, under conditions as close to design as practical, the performance of the full operational sequence that brings the system into operation for reactor shutdown and for LOCAs, including operation of applicable portions of the protection system and the transfer