Document: NUREG-0800
Document ID: 2cb61281-91f4-400a-8eda-41e187e51d77
Document Type: srp
Title: AUXILIARY FEEDWATER SYSTEM (PWR)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070570007.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.4.9
CFR Part: 
CFR Title: 

Content:
C 2 is based in part on meeting the guidance of Position C.1 of Regulatory Guide 1.29 if any portion of the system is deemed to be safety related and the guidance of Position C.2 for nonsafety-related portions. Also, acceptance is based in part on (1) meeting the guidance of Regulatory Guide 1.117 with respect to identifying portions of the system that should be protected 10.4.9-7 Revision 3 - March 2007 from tornadoes and (2) meeting the guidance of Regulatory Guide 1.102 with respect to identifying portions of the system that should be protected from flooding. 2. Acceptance for meeting the relevant aspects of GDC 4 is based on identification of essential portions of the system as protected from dynamic effects including internal and external missiles. In part, this information should be consistent with the guidance of Regulatory Guide 1.117 with respect to identifying portions of the system that should be protected from tornado missiles and the guidance of BTP 3-3 with respect to identifying portions of the system that should be protected from the dynamic effects of pipe breaks. 3. Acceptance of GDC 5 is based on provision of information that addresses the capability of shared portions of the AFW system to perform required safety functions during an accident in one unit such that the capability to conduct a safe and orderly shutdown and cool-down in the unaffected unit(s) is not significantly affected. 4. Acceptance of GDC 19 is based on meeting BTP 5-4 with regards to cold shutdown from the control room using only safety grade equipment. 5. Acceptance of GDC 34 and 44 is based on the system having sufficient flow capacity so that the system can remove residual heat over the entire range of reactor operation and cool the plant to the decay heat removal system cut-in temperature and the system design conforming to the guidance of BTP 10-1 as it relates to AFW pump drive and power supply diversity. In addition, the recommendations of NUREG-0611 and NUREG-0635 shall