Document: NRC Regulatory Guide
Document ID: 086612c4-a8a7-4f50-a166-6f1cb05bcdaf
Document Type: regulatory_guide
Title: Guidelines for Environmental Qualification of Safety-Related Computer-Based Instrumentation and Control Systems in Nuclear Power Plants
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0630/ML063040591.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.209
CFR Part: 
CFR Title: 

Content:
�� NUREG/CR-6476, “Circuit Bridging of Components by Smoke,” issued October 1996 • NUREG/CR-6543, “Effects of Smoke on Functional Circuits,” issued October 1997 • NUREG/CR-6579, “Digital I&C Systems in Nuclear Power Plants: Risk-Screening of Environmental Stressors and a Comparison of Hardware Availability with an Existing Analog System,” issued January 1998 • NUREG/CR-6597, “Results and Insights on the Impact of Smoke on Digital Instrumentation and Controls,” issued January 2001 • NUREG/CR-6741, “Application of Microprocessor-Based Equipment in Nuclear Power Plants — Technical Basis for Qualification Methodology,” issued January 2003 In general, the NRC’s NUREG-0800, “Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants,” issued 2003, reflects the information provided in regulatory guides. The NRC Office of Nuclear Reactor Regulation uses the Standard Review Plan as guidance in reviewing applications to construct and operate nuclear power plants. This regulatory guide will apply to the 1997 Revision 4 of Chapter 7, “Instrumentation and Controls,” of the Standard Review Plan. The NRC issues regulatory guides to describe to the public methods that the staff considers acceptable for use in implementing specific parts of the agency’s regulations, to explain techniques that the staff uses in evaluating specific problems or postulated accidents, and to provide guidance to applicants. Regulatory guides are not substitutes for regulations, and compliance with regulatory guides is not required. The NRC issues regulatory guides in draft form to solicit public comment and involve the public in developing the agency’s regulatory positions. Draft regulatory guides have not received complete staff review and, therefore, they do not represent official NRC staff positions. This regulatory guide contains information collections that are covered by the requirements of 10 CFR Part 50 which the Office of