Document: NUREG-0800
Document ID: 21a25622-c805-4d35-996c-a62a763f51a4
Document Type: srp
Title: describes the general procedures to be followed in reviewing any instrumentation and control
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0525/ML052500503.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.1
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CFR Title: 

Content:
19. Based on the review of system functions, the Staff concludes that the ESFAS conforms to the requirements of [ANSI/IEEE Std 279 OR IEEE Std 603] and 10 CFR 50.34(f). The ESFAS setpoint methodology conforms to the guidance of Draft Reg. Guide DG-1045. Based upon this review and coordination with those having primary review responsibility for the accident analysis, the Staff concludes that the ESFAS includes the provision to sense accident conditions and anticipated operational occurrences consistent with the accident analysis presented in Chapter 15 of the SAR and evaluated in the SER. Therefore, the Staff finds that the ESFAS satisfies the requirements of GDC 20. SRP 7.3-7 Rev. 4 — June 1997 SRP 7.3-7 The ESFAS 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 ESFAS conforms to the guidelines on the application of the single-failure criterion in ANSI/IEEE Std 379 as supplemented by Reg. Guide 1.53. Based on the review, the Staff concludes that the ESFAS satisfies the requirement of [ANSI/IEEE Std 279 OR IEEE Std 603] with regard to system reliability and testability. Therefore, the Staff finds that the ESFAS satisfies these requirements of GDC 21. The ESFAS conforms to the guidelines in Reg. Guide 1.75 for protection system independence. Based on the review, the Staff concludes that the ESFAS satisfies the requirement of [ANSI/IEEE Std 279 OR IEEE Std 603] with regard to the system's independence. Therefore, the Staff finds that the ESFAS satisfies the requirements of GDC 22. Based on the review of the failure modes and effects analysis for the ESFAS, the Staff concludes that the system is designed to fail into a safe state if conditions such as disconnection of the system, loss of energy, or a postulated adverse environments are experienced. Therefore, the Staff finds that the ESFAS satisfies the requirements of GDC 23. Based