Power Reactors (Division 1): Regulatory Guides 1.241 - 1.257
This page lists the number, title, publication date, and revisions for each regulatory guide in Division 1, "Power Reactors," with references to draft guides and related documents (where applicable).
See also Draft Regulatory Guides for Public Comment.
See NRC Regulatory Guides for more general information.
Regulatory Guides are reviewed about every 10 years, although a guide may be reviewed more frequently if the staff believes an emerging issue affects the guide. The NRC began these reviews in 2010, and began posting the results of its reviews on this site in 2013. The review dates are hyperlinked to the review memorandum, which provide useful information about the status and any known issues with the associated regulatory guide.
| Guide Number | Title | Revision Number | Issue Date | Additional Information |
|---|---|---|---|---|
| 1.242 | Performance-Based Emergency Preparedness for Small Modular Reactors, Non-Light-Water Reactors, and Non-Power Production or Utilization Facilities | 0 | 11/2023 | |
| 1.243 | Safety-Related Steel Structures and Steel-Plate Composite (SC) Walls for other than Reactor Vessels and Containments | 0 | 08/2021 | |
| 1.244 | Control of Heavy Loads at Nuclear Facilities | 0 | 12/2021 | |
| 1.245 | Preparing Probabilistic Fracture Mechanics (PFM) Submittals | DG | 07/2025 | DG-1422, Rev 1, Proposed revision 1 to RG 1.245 |
| DG | 02/2024 | |||
| 0 | 01/2022 | |||
| 1.246 | Acceptability of ASME Code, Section XI, Division 2, Requirements for RIM Programs for NPPs, for Non-LWRs | 0 | 10/2022 | |
| 1.247 | TRIAL - Acceptability of Probabilistic Risk Assessment Results for Non-Light Water Reactor Risk-Informed Activities | Trial | 03/2022 | |
| 1.248 | Guide for Assessing, Monitoring, and Mitigating Aging Effects on Electrical Equipment Used in Production and Utilization Facilities | 0 | 10/2022 | |
| 1.249 | Use of ARCON Methodology For Calculation Of Accident-Related Offsite Atmospheric Dispersion Factors | 0 | 08/2023 | |
| 1.250 | Dedication of Commercial-Grade Digital I&C Items for Use in Nuclear power Plants | 0 | 10/2022 | |
| 1.253 | Guidance for a Technology-Inclusive Content of Application Methodology to Inform the Licensing Basis and Content of Applications for Licenses, Certifications, and Approvals for Non-Light-Water Reactors | 0 | 03/2024 | |
| 1.254 | Technology-Inclusive Identification of Licensing Events for Commercial Nuclear Plants | 0 | 03/2026 | |
| 1.256 | Guidance for Assessment of Flooding Hazards Due to Water Control Structure Failures and Incidents | DG | 07/2024 | DG-1417 |
| 1.257 | Qualification of Fiber-Optic Cables, Connections, and Optical Fiber Splices for Use in Safety Systems for Production and Utilization Facilities | 0 | 08/2025 |
Page Last Reviewed/Updated Friday, May 08, 2026
Page Last Reviewed/Updated Friday, May 08, 2026