Document: NRC Regulatory Guide
Document ID: 96ecfd93-e64a-4f35-93fe-d3b95daac61d
Document Type: regulatory_guide
Title: Monitoring the Effectiveness of Maintenance at Nuclear Power Plants + HISTORY –HISTORY 06/2018 – DG-1336 , Proposed Revision 4 09/2011 – DG-1278 , Proposed Revision 3 08/1996 – DG-1051 , Proposed Revision 2 06/1994 – DG-1031, Proposed Revision 1 11/1992 – DG-1020, Proposed Revision 0 (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1812/ML18129A080.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.160
CFR Part: 
CFR Title: 

Content:
nsidered in the assessment under 10 CFR 50.65(a)(4) if the measure is to remain in place during the maintenance activity. Temporary Equipment Paragraph 6 of Section 11.3.2, “General Guidance for the Assessment - Power Operation and Shutdown” contains a note which states: If, during power operation conditions, the temporary alteration associated with maintenance is expected to be in effect for greater than 90 days, the temporary alteration should be screened, and if necessary, evaluated under 10 CFR 50.59 prior to implementation. The note in Paragraph 6 of Section 11.3.2 may not be clear regarding the application of the 90 day allowance to other programs and processes, as well as to the timing of required evaluations, and is clarified as stated below. • Any adverse effects on other elements of the licensing basis (e.g., technical specifications, 10 CFR 50.65, security, EQ, HELB, fire protection, effects on co-located equipment for multi-unit sites, and etc.) from these maintenance activities and temporary modifications are addressed either through the 10 CFR 50.59 process or other processes (e.g., work control) before an activity is initiated. With regard to security, the applicable change process is 50.54(p), which allow a licensee to make changes to a physical security plan, or guard training and qualification plan, or cyber security plan, or categories of Background, Generic Planning Base, Licensee Planning Base, and Responsibility Matrix contained in a licensee safeguards contingency plan without prior Commission approval if the changed do not decrease the safeguards effectiveness of the plan. With regard to emergency plans, the applicable change process is 10 CFR 50.54(q). 10 CFR 50.54(q)(2) requires a holder of a license under part 50, or a combined license under part 52 after the Commission makes the finding under § 52.103(g), to follow and to maintain the effectiveness of an emergency plan that meets the requirements in appendix E to 10 CFR part 50