Document: NUREG-0800
Document ID: b1bccb14-17b6-422b-93ee-6d4f00b6512b
Document Type: srp
Title: CHILLED WATER SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1510/ML15103A559.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.2.7
CFR Part: 
CFR Title: 

Content:
., floods, winds, missiles, seismic events). As a result of this evaluation, RTNSS C SSCs maybe designed against the effects of natural phenomena. SRP Section 19.3 provides further guidance related to the reliability and availability missions of RTNSS B and C SSCs. X X 3. Compliance with GDC 4 is not required for RTNSS SSCs; however, RTNSS B SSCs should be analyzed and designed to withstand adverse effects associated with internal hazards, i.e., those created from conditions inside the plant (e.g. flooding). X 4. GDC 5 is not applicable to nonsafety-related SSCs. 5. Compliance with GDC 44 is not required for RTNSS SSCs; however, 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. X X 6. GDC 45 is not applicable to nonsafety-related SSCs. 7. GDC 46 is not applicable to nonsafety-related SSCs. 8. 10 CFR 20.1406 is applicable to nonsafety-related SSCs. X X X Technical Rationale The technical rationale for application of these acceptance criteria to the areas of review addressed by this SRP section is discussed in the following paragraphs. The specific areas of review for the CWS are as listed below. 1. GDC 1 requires that SSCs important to safety shall be designed, fabricated, erected, and tested to quality standards commensurate with the importance of the safety functions to be performed. Where generally recognized codes and standards are used, they 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 in keeping with the required safety function. A quality assurance program shall be established and implemented in order to provide adequate assurance that these SSCs will satisfactorily perform their safety functions. Appropriate records of the design, fabrication, erection, 9.2.7-11 Revision