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:
g the probable maximum flood). This review is performed according to SRP Section 3.4.1. 8. The capability exists to detect, collect, and control system leakage and to isolate portions of the system in case of excessive leakage or component malfunctions. 9. Provisions are made for operational testing. 10. Instrumentation and control features are provided to verify the system is operating in a correct mode. 11. The system is capable of automatically initiating auxiliary feedwater flow upon receipt of a system actuation signal. 10.4.9-3 DRAFT Rev. 3 - April 1996 12. The system satisfies the recommendations of Regulatory Guide 1.62 with respect to the system capability to manually initiate protective action by the auxiliary feedwater system. 13. The system design possesses the capability to automatically terminate auxiliary feedwater flow to a depressurized steam generator, and to automatically provide feedwater to the intact steam generator. Or as an alternative if it is shown that the intact steam generator will receive the minimum required flow without isolation of the depressurized steam generator and containment design pressure is not exceeded, then operator action may be relied upon to isolate the depressurized steam generator. 14. The system possesses sufficient auxiliary feedwater flow capacity so that a cold shutdown can be achieved. Upon request from ASBSPLB , the Reactor Systems Branch 6 (RSBSRXB) will verify that the system meets the minimum flow requirements for 7 decay heat removal. 15. The applicant's proposed technical specifications are such as to assure the continued reliability of the AFWS during plant operation; i.e., the limiting conditions for operation and the surveillance testing requirements are specified and are consistent with the Standard 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