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:
y combination of steam generators. This arrangement should take into account pipe failure, active component failure, power supply failure, or control system failure that could prevent system function. One arrangement that would be acceptable is crossover piping containing valves that can be operated by remote manual control from the control room, using the power diversity principle for the valve operators and actuation systems. 4. The auxiliary feedwater system should be designed with suitable redundancy to offset the consequences of any single-active component failure; however, each train need not contain redundant active components. 5. When considering a high energy line break, the system should be so arranged as to assure the capability to supply necessary emergency feedwater to the steam generators, despite the postulated rupture of any high energy section of the system, assuming a concurrent single active failure. C. REFERENCES None SRP Draft Section 10.4.9 Attachment A - Proposed Changes in Order of Occurrence 10.4.9-19 DRAFT Rev. 3 - April 1996 Item numbers in the following table correspond to superscript numbers in the redline/strikeout copy of the draft SRP section. Item Source Description 1. Current PRB names and Editorial change made to reflect current PRB names abbreviations. and responsibilities for SRP Section 10.4.9. 2. Editorial The text was modified to state that the design should comply with the GDCs. 3. Integrated Impact 217. Text was added to incorporate 10 CFR 50.63 with the description of applicable requirements for consistency with the acceptance criteria subsection. 4. Current PRB names and Editorial change made to reflect current PRB names abbreviations. and responsibilities for SRP Section 10.4.9. 5. Current PRB names and Editorial change made to reflect current PRB names abbreviations. and responsibilities for SRP Section 10.4.9. 6. Current PRB names and Editorial change made to reflect current PRB names abbreviations. and responsibilities