Document: NRC Regulatory Guide
Document ID: b3f1c9ad-b3bf-44dd-b353-6c5da96d4b26
Document Type: regulatory_guide
Title: Criteria for The Protection of Safety-Related
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2415/ML24158A041.pdf
Revision Date: 2024-08
Chapter: 
Section ID: RG-1.238
CFR Part: 
CFR Title: 

Content:
ishing setpoints for safety-related instrumentation to protect plant safety and analytical limits, and on maintaining instrument channels implementing these setpoints to ensure they are functioning as required. RIS 2006-017 provides information about the appropriate establishment of as- found and as-left acceptance tolerances. 3. Annex B, “Guidelines for selection of overload protection for valve actuator motor (VAM) circuits,” is informative but endorsement of IEEE Std. 741-2022 does not include endorsement of Annex B. RG 1.106 provides additional information on electrical protection of motors on motor- operated valves. 4. The following annexes are informative, but endorsement of IEEE Std. 741-2022 does not include endorsement of these annexes: a. Annex C, “Auxiliary system automatic bus transfer—protection concerns,” and b. Annex D, “Use of high-speed magnetic circuit breakers for special applications.” DG-1354, Page 9 D. IMPLEMENTATION The NRC staff may use this regulatory guide as a reference in its regulatory processes, such as licensing, inspection, or enforcement. However, the NRC staff does not intend to use the guidance in this regulatory guide to support NRC staff actions in a manner that would constitute backfitting as that term is defined in 10 CFR 50.109, “Backfitting,” and as described in NRC Management Directive 8.4, “Management of Backfitting, Forward Fitting, Issue Finality, and Information Requests” (Ref. 35), nor does the NRC staff intend to use the guidance to affect the issue finality of an approval under 10 CFR Part 52, “Licenses, Certifications, and Approvals for Nuclear Power Plants.” The staff also does not intend to use the guidance to support NRC staff actions in a manner that constitutes forward fitting as that term is defined and described in Management Directive 8.4. If a licensee believes that the NRC is using this regulatory guide in a manner inconsistent with the discussion in this Implementation section,