Home / Agencies / NRC / 2025-14215
Proposed Rule

Licensing Safety Analysis for Loss-of-Coolant Accidents

Agency
NRC
Document Number
2025-14215
Published
July 28, 2025
Effective Date
-

Abstract

The U.S. Nuclear Regulatory Commission (NRC) is denying a petition for rulemaking (PRM), dated August 1, 2022, submitted by Ralph O. Meyer. The petition requested that the NRC amend its regulations regarding the licensing safety analysis for loss-of-coolant accidents. The petition was docketed on August 1, 2022, and was assigned Docket No. PRM-50-124. The NRC is denying the petition because the NRC is addressing emergency core cooling system performance with a risk- informed and performance-based regulatory approach rather than a deterministic approach as suggested by the petitioner.

Federal Register Source

This document is published by the Office of the Federal Register, National Archives and Records Administration. Access the full regulatory text, preamble, and docket comments below.

View Full Text on FederalRegister.gov →

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Frequently Asked Questions

What is the 2025-14215 Federal Register document?
Document 2025-14215 is a Proposed Rule published by the Nuclear Regulatory Commission in the Federal Register on July 28, 2025. The U.S. Nuclear Regulatory Commission (NRC) is denying a petition for rulemaking (PRM), dated August 1, 2022, submitted by Ralph O. Meyer. The petition requested that the NRC amend its regulations regarding the licensing safety analysis for loss-of-coolant accidents. The petition was docketed on August 1, 2022, and was assigned Docket No. PRM-50-124. The NRC is denying the petition because the NRC is addressing emergency core cooling system performance with a risk- informed and performance-based regulatory approach rather than a deterministic approach as suggested by the petitioner. View the original at https://www.federalregister.gov/documents/2025/07/28/2025-14215/licensing-safety-analysis-for-loss-of-coolant-accidents.
Is document 2025-14215 an economically significant rule?
No. Document 2025-14215 is not classified as economically significant under Executive Order 12866. Economically significant rules require OIRA review and are estimated to have impacts of $100 million or more per year.

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