Document: NRC Regulatory Guide
Document ID: 9e5c28ce-3a04-491c-8c21-07d90622ba1b
Document Type: regulatory_guide
Title: Guide for Assessing, Monitoring, and Mitigating Aging Effects on Electrical Equipment Used in Production and Utilization Facilities
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2128/ML21288A115.pdf
Revision Date: 2023-05
Chapter: 
Section ID: RG-1.248
CFR Part: 
CFR Title: 

Content:
egrity of the aggregate parts and components. Consequently, a component with undetected damage or degraded condition could pass a system functional test but still fail unexpectedly when called upon to function under anticipated environmental conditions or the more severe stresses encountered during a design-basis event (e.g., fully loaded equipment, more extreme environmental conditions, extended operation in a heavily loaded state) Nuclear power generating station applicants for and holders of renewed licenses under 10 CFR Part 54 are required to demonstrate that the effects of aging will be adequately managed so that the intended function(s) will be maintained consistent with the current licensing basis for the period of extended operation. The scope of the SSCs under this rule includes, for the most part, passive long-lived components, which includes such components as electrical cables, metal enclosed buses, electrical connections, transmission conductors, and switchyard buses. This RG provides guidelines and methods acceptable to the NRC staff for assessing, monitoring, and mitigating aging effects on electrical equipment in nuclear generating stations. Consideration of International Standards The International Atomic Energy Agency (IAEA) works with member states and other partners to promote the safe, secure, and peaceful use of nuclear technologies. The IAEA develops Safety DG-1393, Page 6 Requirements and Safety Guides for protecting people and the environment from the harmful effects of ionizing radiation. This system of safety fundamentals, safety requirements, safety guides, and other relevant reports, reflects an international perspective on what constitutes a high level of safety. To inform its development of this RG, the NRC staff considered IAEA Safety Requirements and Safety Guides pursuant to the Commission’s International Policy Statement (Ref. 13) and Management Directive and Handbook 6.6, “Regulatory Guides” (Ref. 14). The NRC staff has