# Regulatory Guide: Alternative Radiological Source Terms for Evaluating Design Basis Accidents at Nuclear Power Reactors
> **Nuclear Regulatory Commission** · Final guide; issuance. · Published 2023-10-16 · 88 FR 71277
## Document
- **Document number:** 2023-22789
- **Category:** other
- **Sub-agency:** Nuclear Regulatory Commission
- **Federal Register citation:** 88 FR 71277
- **CFR reference:** 10 CFR 50
- **Publication date:** 2023-10-16
- **Energy docket:** NRC-2021-0179
## Abstract

The U.S. Nuclear Regulatory Commission (NRC) is issuing Revision 1 to Regulatory Guide (RG), 1.183, "Alternative Radiological Source Terms for Evaluating Design Basis Accidents at Nuclear Power Reactors." This RG describes a method that the NRC staff considers acceptable in complying with regulations for design basis accident dose consequence analysis using an alternative source term. This guidance for light-water reactor (LWR) designs includes the scope, nature, and documentation of associated analyses and evaluations; consideration of impacts on analyzed risk; and content of submittals.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2023/10/16/2023-22789/regulatory-guide-alternative-radiological-source-terms-for-evaluating-design-basis-accidents-at)
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