Document: NRC Regulatory Guide
Document ID: 1ac32162-97f5-4f31-bb0b-e39d7e0e70ca
Document Type: regulatory_guide
Title: Assessing and Managing Risk Before Maintenance Activities at Nuclear Power Plants
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003740117.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.182
CFR Part: 
CFR Title: 

Content:
tended functions, (2) for nonsafety-related equipment, failures will not occur that prevent the fulfillment of safety-related functions, and (3) failures resulting in scrams and unnecessary actuations of safety-related systems are minimized. (Note that, for Maintenance Rule purposes, the term "SSC" may denote a structure, system, or train. Although components may be monitored individually at the licensee's discretion, the Rule and its guidance generally do not require monitoring to that level of detail.) The benefits of performing maintenance activities during power operations include increased system and plant reliability, reduction of plant equipment and system material condition 'Copies are available for inspection or copying for a fee from the NRC Public Document Room at 2120 L Street NW., Washington, DC; the PDR's mailing address is Mail Stop LL-6, Washington, DC 20555; telephone (202)634-3273; fax (202)634-3343. 2Single copies of regulatory guides, both active and draft, and draft NUREG documents may be obtained free of charge by writing the Reproduction and Distribution Services Section, OCIO, USNRC, Washington, DC 20555-0001, or by fax to (301)415-2289, or by email to <DISTRIBUTION@NRC.GOV>. Copies of active and draft guides are available for inspection or copying for a fee from the NRC Public Document Room. 1.182-2 deficiencies that could adversely impact plant operations, and reduction of work scope during plant refueling outages. However, relevant margins of safety could be inadvertently reduced under certain conditions, for example, if maintenance is performed at power without proper controls and careful consideration of risk. The intent of 10 CFR 50.65(a)(4) is to require that licensees perform assessments before maintenance activities are performed on SSCs covered by the Maintenance Rule and manage the increase in risk that may result from the proposed activities. The results of these assessments are to be used in conjunction with other regulatory