Document: NUREG-0800
Document ID: e75b7685-2a36-4e9b-a431-02d166dcf372
Document Type: srp
Title: LOSS OF NONEMERGENCY AC POWER TO THE STATION AUXILIARIES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070681.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.2.6
CFR Part: 
CFR Title: 

Content:
ewer concentrates on the need for the reactor protection system, the engineered 4 safety systems, and operator action to secure and maintain the reactor in a safe condition. The analytical methods are reviewed by RSBSRXB to ascertain whether the mathematical 5 modeling and computer codes have been previously reviewed and accepted by the staff. If a referenced analytical method has not been previously reviewed, the reviewer requests initiation of a generic evaluation of the new analytical model by RSBSRXB or the Core Performance 6 Branch (CPB) as appropriate.7 The predicted results of the transient analysis are reviewed to assure ensure that the 8 consequences meet the acceptance criteria given in subsection II, below. The results of the analysis are reviewed to ascertain that the values of pertinent system parameters are within expected ranges for the type and class of reactor under review. Review Interfaces9 The RSBSRXB will coordinate other branch evaluations that interface with the overall review 10 of the transient analysis as follows: 1. The ICSBHICB reviews the instrumentation and controls aspects of the sequence 11 12 described in the SAR to evaluate whether the reactor and plant protection and safeguards controls and instrumentation systems will function as assumed in the safety analysis with regard to automatic actuation, remote sensing, indication, control, and interlocks with auxiliary or shared systems. 2. The ICSBHICB evaluates the design of the auxiliary feedwater system to determine that 13 the requirements and guidance of II.E.1.2 of NUREG-0737 and 10 CFR 50.34(f)(2)(xii)14 are met. The RSBSRXB reviewer consults with the ICSBHICB reviewer to assure 15 16 ensure that the appropriate delay time for auxiliary feedwater initiation is assumed in the analysis. 3. The reliability of the auxiliary feedwater system is reviewed by the ASBSPLB in 17 accordance with SRP Section 10.4.9 and in accordance, including conformance with 18 19 the requirements and