Document: NUREG-0800
Document ID: 2925ed14-c49b-459b-8786-e6bffd2c43c4
Document Type: srp
Title: AUXILIARY FEEDWATER SYSTEM (PWR)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070603.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.4.9
CFR Part: 
CFR Title: 

Content:
ndard Technical Specifications. 16. In conjunction with the Instrumentation and Controls Systems Branch (ICSBHICB) the 8 ASBSPLB verifies that the system design meets the generic short and long term 9 recommendations identified in NUREGS-0611 and -0635 (References 16 and 17) . 10 These recommendations will apply to all PWRs. 17. An AFWS reliability analysis is performed in accordance with as required by TMI Action Plan Item II.E.1.1 of NUREG-0737 (Reference 18) and 10 CFR 50.34(f)(1)(ii) 11 for applicants subject to 10 CFR 50.34(f)using the methodology defined by Appendix III and Annex 1 of Appendix X in NUREG-0611 and NUREG-0635 to determine the system reliability and major contributors to AFW system failure under various loss of main feedwater transients.12 18. The reviewer coordinates with ICSBHICB will evaluateand verifies that the design to 13 determine that meets the requirements and guidance of TMI Action Plan item II.E.1.2 of NUREG-0737 are met regarding the automatic and manual initiation of the AFWS, and 10 CFR 50.62(c)(1) regarding the automatic initiation of the AFWS on conditions indicative of an anticipated transient without scram (ATWS). 14 19. The reviewer verifies that the system design has the capability to permit operation at hot 15 shutdown for at least four hours followed by cooldown to the RHR cut-in temperature from the control room using only safety grade equipment and assuming the worst case single active failure in accordance with Branch Technical Position RSB 5-1 (Reference 14) . 16 20. The SPLB reviews the diversity and performance of the AFWS with regard to the decay heat removal capability and capacity for station blackout events.17 DRAFT Rev. 3 - April 1996 10.4.9-4 Review Interfaces:18 SPLB also performs the following reviews under the SRP sections indicated:19 1. The review for Fire Protection is coordinated and performed by the Chemical Engineering BranchSPLB as part of theirits primary review responsibility for SRP 20 21 Section