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:
n. RTNSS B: applies for nonsafety-related functions in the post-72 hour period. RTNSS C: applies for nonsafety-related defense-in-depth functions in order to meet NRC safety goal guidelines. For RTNSS B and C replace item 5 (above) with the following: Multiple performance functions (if required by system design to perform a safety function) assigned to the system and the necessity of each function for RTNSS component cooling and shutdown. 9.2.7-5 Draft Revision 0 – July 2014 6. The capability of the system surge tank to perform its intended function with considerations for system leakage. RTNSS B and C: apply. 7. The capability of the system to provide adequate cooling water during all operating conditions. RTNSS B: applies for nonsafety-related functions in the post-72 hour period. RTNSS C: applies for nonsafety-related defense-in-depth functions in order to meet NRC safety goal guidelines. 8. The sizing of the system for adequate design heat load transfer capability and appropriate design margin. RTNSS B: applies for nonsafety-related functions in the post-72 hour period. RTNSS C: applies for nonsafety-related defense-in-depth functions in order to meet NRC safety goal guidelines. Nonsafety-related nonrisk-significant: may apply for SSCs used to obtain CSD conditions. Functions that support achieving and maintaining CSD conditions are reviewed for reliability of systems and components 9. The effects of non-seismic Category I component failures on the seismic Category I portion of the system (e.g., containment penetrations). RTNSS B and C and nonsafety-related nonrisk-significant: apply. 10. The requirements for operational testing and in-service inspection of the system. RTNSS B and C: does not directly apply. Testing and in-service inspection are elements of the reliability assurance program (RAP). Also, surveillance testing is done for items in the Availability Controls Manual. Alternative criteria are addressed in SRP Section 19.3 on the programmatic