Document: NUREG-0800
Document ID: 6cac2015-4823-4421-9a34-1ee7f23d1ec2
Document Type: srp
Title: or ESFAS — Section 7.3):
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0525/ML052500512.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.2
CFR Part: 
CFR Title: 

Content:
The review included the identification of those systems and components for the DCS which are designed to survive the effects of earthquakes, other natural phenomena, abnormal environments, and missiles. Based upon the review, the Staff concludes that the applicant/licensee has identified those systems and components consistent with the design bases for those systems. Sections 3.10 and 3.11 of the SER address the qualification programs to demonstrate the capability of these systems and components to survive these events. Therefore, the Staff finds that the identification of these systems and components satisfies the requirements of GDC 2 and 4. Based on the review of system functions, the Staff concludes that the DCS conforms to the design basis requirements of IEEE Std 279 and 10 CFR 50.34(f). Setpoint analyses account for measurement inaccuracies attributable to the DCS in accordance with the guidance of Draft Reg. Guide 1.105. The Staff concludes that the DCS adequately supports RTS and ESFAS functions as necessary to sense accident conditions and anticipated operational occurrences in order to initiate protective actions consistent with the accident analysis presented in Chapter 15 of the SAR and evaluated in the SER. Therefore, the Staff finds that the DCS appropriately supports RTS and ESFAS compliance with the requirements of GDC 20. Rev. 4 — June 1997 SRP 7.9-8 The DCS conforms to the guidelines for periodic testing in Reg. Guide 1.22 and Reg. Guide 1.118. The bypassed and inoperable status indication conforms to the guidelines of Reg. Guide 1.47. The DCS conforms to the guidelines on the application for the single-failure criterion in IEEE Std 379 as supplemented by Reg. Guide 1.53. Based on the review, the Staff concludes that the DCS satisfies the requirement of IEEE Std 279 with regard to the system reliability and testability. Therefore, the Staff finds that the DCS satisfies these requirements of GDC 21. Based on the review of software development