Document: NUREG-0800
Document ID: 49aefb86-1adb-4b3c-826f-480e32947595
Document Type: srp
Title: Radiological Consequence Analyses Using Alternative Source Terms
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0037/ML003734190.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.0.1
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CFR Title: 

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of themselves, affect the previously analyzed core damage frequency (CDF) and large early release frequency (LERF). However, the reviewer should ensure that any associated plant modification that may have an impact on CDF or on LERF is reviewed by risk analysts in SPSB. f. A review of the proposed changes as they relate to the plant’s licensing basis is performed. Areas of review include how the licensee satisfies certain basic regulatory requirements such as diversity, redundancy, defense-in-depth, safety margins, NUREG-0737 commitments and the General Design Criteria, as applicable. Review procedures related to structures, systems, and components, and nonradiological aspects of accidents in other SRP sections may be applicable. Previously approved implementations of an AST, if applicable, should be included in this review. If changes to technical specifications, exemptions from regulations, or other forms of relief are needed to implement the licensee’s proposed change, reviewers should ensure that the appropriate requests accompany the application. 2. An application may be a full or selective implementation of an AST. The reviewer should consider the following in performing the review of the application: a. A full implementation addresses all characteristics of an AST, replaces the previous accident source term used in all design basis radiological analyses, and incorporates the TEDE criteria of 10 CFR 50.67 and Section II of this SRP section. The reviewer should ensure that a complete analysis of the DBA LOCA has been performed, as a minimum. Other analyses may be necessary as described in RG-1.183. 15.0.1-9 Rev. 0 -- July 2000 b. In a selective implementation, the licensee may opt to only implement one or more of the characteristics of an AST and may chose to use the AST only in analyses supporting limited plant modifications. The reviewer should ensure that the proposed selective implementation is technically justified and that a clear, logical, and