Document: NUREG-0800
Document ID: 9a64419a-34ff-49d2-87dd-c6f10c12014f
Document Type: srp
Title: or 7.3 of the SAR.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0525/ML052500501.pdf
Revision Date: 2023-06
Chapter: 7
Section ID: 7.2
CFR Part: 
CFR Title: 

Content:
edition of ASME Std NQA-1, "Quality Assurance Requirements for Nuclear Facility Applications." The 1994 edition of NQA-1 also includes the former ASME Std NQA-2a, Part 2.7 of which addresses computer software. ASME Std NQA-2a, Part 2.7 is referenced by IEEE Std 7-4.3.2, Section 5.3.1, but has not been endorsed by the NRC. Rev. 4 — June 1997 SRP 7.1-5 1. Electromagnetic compatibility — Section 3(7) of ANSI/IEEE Std 279 requires that the design basis for protection systems document the range of transient and steady-state conditions throughout which the system must perform. IEEE Std 603 contains similar requirements. For digital computer-based systems, the range of conditions considered should include the electromagnetic environment, including electrostatic discharge. Electrical Power Research Institute (EPRI) topical report TR-102323, "Guidelines for Electromagnetic Interference Testing in Power Plants," and the associated Staff safety evaluation report describe an adequate guideline for qualifying digital I&C equipment for a plant environment. Lightning protection should be addressed as part of the review of electromagnetic compatibility. Lightning protection features should conform to the guidance of NFPA Std 78, "Lightning Protection Code," and ANSI/IEEE Std 665, "Guide for Generation Station Grounding." 2. Computer system quality — In order for safety-related, digital computer-based I&C systems to comply with the quality and reliability requirements of ANSI/IEEE Std 279, GDC 1, GDC 21, GDC 29, and 10 CFR 50 Appendix B, the computers (including embedded software) must be of high quality. The quality requirements applicable to hardware are well documented in ANSI/IEEE Std 279, IEEE Std 603, and ASME Std NQA-1. IEEE Std 7-4.3.2 identifies five areas where additional guidance is needed to support evaluation of digital systems with respect to these requirements. a. Software development and hardware/software integration — An acceptable means of ensuring the