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
CFR Part: 
CFR Title: 

Content:
sign of the ESFAS is compatible with the functional requirements of EAS systems. Note: the following finding applies only to systems involving digital computer-based components. Based on the review of software development plans and the inspections of the computer development process and design outputs, the Staff concludes that the computer systems meet the guidance of Reg. Guide 1.152. Therefore, the special characteristics of computer systems have been adequately addressed, and the Staff finds that the ESFAS satisfies these requirements of GDC 1 and 21. Based on the review of the applicant/licensee's defense-in-depth and diversity analysis, the Staff concludes that the ESFAS complies with the criteria for defense against common-mode failure in digital instrumentation and control systems. Therefore, the Staff finds that adequate diversity and Rev. 4 — June 1997 SRP 7.3-8 defense against common-mode failure has been provided to satisfy these requirements of GDC 21, GDC 22, and the Staff Requirements Memorandum on SECY-93-087. Note: the following findings apply only to applications under 10 CFR 52. The ESFAS design appropriately addresses the applicable unresolved and generic safety issues. Therefore, the Staff finds that the ESFAS satisfies the requirements of 10 CFR 52.47(a)(1)(iv). The review of the ESFAS examined the proposed inspections, tests, analyses, and acceptance criteria (ITAAC). Based upon the review and coordination with those having primary responsibility for ITAAC, the Staff concludes that if the inspections, tests, and analyses are performed and the acceptance criteria are met, the plant will operate in accordance with the [design certification OR combined license]. Therefore, the Staff finds that the ESFAS satisfies the requirements of [10 CFR 52.47(a)(1)(vi) OR 10 CFR 52.79(c)]. The application for design certification does not seek certification for the following portions of the ESFAS [insert list]. Based upon review of the completed safety