Document: NRC Regulatory Guide
Document ID: 01fb3132-b05a-41a0-ab81-466a6fb6f4d3
Document Type: regulatory_guide
Title: Preparation of Environmental Reports for Nuclear Power Plant License Renewal Applications (Rev. 1)
Source: NRC Regulatory Guide Division 4
Source URL: https://www.nrc.gov/docs/ML0916/ML091620409.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-4.2S1
CFR Part: 
CFR Title: 

Content:
s that have not considered such alternatives. Specifically, 10 CFR 51.53(c)(3)(ii)(L) requires the following: If the staff has not previously considered severe accident mitigation alternatives for the applicant’s plant in an environmental impact statement or related supplement or in an environmental assessment, a consideration of alternatives to mitigate severe accidents must be provided. Section 4.9.1.2 and Appendix G to the revised GEIS discuss severe accident mitigation alternatives. The analyses performed for Chapter 4, “Environmental Consequences of Postulated Accidents,” in the 1996 GEIS, represent adequate, plant-specific estimates of the environmental impacts of severe accidents. However, the Commission determined that a site-specific consideration of severe accident mitigation alternatives (SAMAs) will be required at the time of license renewal in a final environmental impact statement, final environmental assessment, or related supplement. The applicant should provide the relevant citation. If no such citations exist, the applicant should provide the information described below. Information and Analysis Content The identification of possible SAMAs and evaluation of their merits should use the information and analyses developed for the latest available version of the plant-specific probabilistic risk assessment, as well as insights from the individual plant examination for severe accident vulnerabilities and the plant- DG-4015, Page 48 specific individual plant examination of external events for severe accident vulnerabilities (e.g., earthquakes, fire, winds). In preparing the SAMA analyses, applicants may be guided by analyses performed for previous applications for renewal of operating licenses, as documented in supplements to the GEIS. In structuring the analysis, the applicant should consider the methodology presented in NUREG/BR-0184, “Regulatory Analysis Technical Evaluation Handbook,” issued January 1997, and the guidance provided in NEI