Document: NRC Regulatory Guide
Document ID: 82659041-98b0-4721-b25d-c4fb2ea394d0
Document Type: regulatory_guide
Title: An Approach for Using Probabilistic Risk Assessment in Risk-Informed Decisions on Plant-Specific Changes to the Licensing Basis (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1635/ML16358A153.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.174
CFR Part: 
CFR Title: 

Content:
ting conditions (e.g., operating a valve dry, over-pressurization of a system) or failure of another component that caused the SSC failure. Therefore, corrective actions should also consider SSCs with similar characteristics with regard to operating, design, or maintenance conditions. The results of the monitoring need not be reported to the NRC, but should be retained onsite for inspection. 4. Element 4: Submit Proposed Change Requests for proposed changes to the plant’s licensing basis typically take the form of requests for license amendments (including changes to or removal of license conditions), technical specification changes, changes to or withdrawals of orders, and changes to programs under 10 CFR 50.54, “Conditions of Licenses” (Ref. 39) (e.g., quality assurance program changes under 10 CFR 50.54(a)). Licensees should (1) carefully review the proposed licensing basis change to determine the appropriate form of the change request; (2) ensure that information required by the relevant regulations in support of the request is developed; and (3) prepare and submit the request in accordance with relevant procedural requirements. For example, license amendments should meet the requirements of 10 CFR 50.90, 10 CFR 50.91, “Notice for Public Comment; State Consultation” (Ref. 40), and 10 CFR 50.92, as well as the procedural requirements in 10 CFR 50.4, “Written Communications” (Ref. 41). Risk information that the licensee submits in support of the licensing basis change request should meet the guidance in Section C.6 of this RG. Licensees may submit risk information in support of their licensing basis change request. If the licensee’s proposed change to the licensing basis is consistent with currently approved staff positions, the staff’s determination is generally based solely on traditional engineering analyses without recourse to risk information (although the staff may consider any risk information submitted by the licensee). If the