Data / Federal rules / 2025-02065
Regulatory Guides: Criteria for Power Systems for Nuclear Power Plants and Criteria for the Protection of Class 1E Power Systems and Equipment for Nuclear Power Plants
The Nuclear Regulatory Commission published this final rule in the Federal Register on January 31, 2025.
SpecStream is the live web data engine for teams and agents. It reads every rule and proposed rule in the Federal Register each morning, and this page is that reading. Name your industry once and new rules, comment deadlines and effective dates arrive in your sheet, CRM, Slack or agent as they are published.
What the agency says
The U.S. Nuclear Regulatory Commission (NRC) is issuing Revision 4 to Regulatory Guide (RG) 1.32, "Criteria for Power Systems for Nuclear Power Plants," and new RG 1.238, "Criteria for the Protection of Class 1E Power Systems and Equipment for Nuclear Power Plants." RG 1.32, Revision 4, describes an acceptable approach for use in complying with NRC regulations for the design, operation, and testing of electric power systems in nuclear power plants. RG 1.238 describes an acceptable approach for use in complying with NRC regulations for protection of Class 1E power systems and equipment at nuclear power plants. The NRC is also withdrawing RG 1.41, "Preoperational Testing of Redundant On-Site Electric Power Systems to Verify Proper Load Group Assignments," since its guidance is incorporated into RG 1.32, Revision 4.
Key facts
- Document number
- 2025-02065
- Type
- Final rule
- Action
- Final guide; issuance
- Agency
- Nuclear Regulatory Commission
- Published
- January 31, 2025
- Dates
- Revision 4 to RG 1.32 and Revision 0 to RG 1.238 are available on January 31, 2025.
- Docket
- NRC-2024-0140
- Code of Federal Regulations
- 10 CFR 50; 10 CFR 52
- Pages
- 2
Other documents from the Nuclear Regulatory Commission
| Document | Type | Published |
|---|---|---|
| Irradiated Fuel Reprocessing Plants 2026-21690 | Proposed rule | Oct 23 |
| Fee Schedules; Fee Recovery for Fiscal Year 2026 C1-2026-12067 | Final rule | Oct 19 |
| AP1000 Design Certification Renewal 2026-21031 | Proposed rule | Oct 14 |
| AP1000 Design Certification Renewal 2026-21030 | Final rule | Oct 14 |
| Exemptions From Materials Licensing 2026-20336 | Final rule | Oct 5 |
| Exemptions From Materials Licensing 2026-20335 | Proposed rule | Oct 5 |
| State of Indiana: Discontinuance of Certain Commission Regulatory Authority Within the State, Notice of Agreement Between the Nuclear Regulatory Commission and the State of Indiana 2026-20276 | Final rule | Oct 2 |
| NRC Modernization: Rulemaking Procedure, Federal Advisory Committee Act Alignment, Access, and Security; Correction and Confirmation of Effective Date 2026-19963 | Final rule | Sep 30 |
Everything from the Nuclear Regulatory Commission · Published in January 2025
Read from the Federal Register API, last updated 2026-10-23. The document on federalregister.gov is the official record; dates and dockets can change through later corrections. Free to reuse with credit to SpecStream under CC BY 4.0.