Skip to main content

Navigation

Spotlight

Power Reactors (Division 1): Regulatory Guides 1.41 - 1.60

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
1.41

Preoperational Testing of Redundant On-Site Electric Power Systems To Verify Proper Load Group Assignments

- HISTORY

Withdrawing RG 1.41 because its guidance has been incorporated into RG 1.32, Revision 4.

(Withdrawn - See Federal Register, RC-2024-0140-0009)

      
W 01/14/2025  
1.42 Interim Licensing policy on as low as Practicable for Gaseous Radiodine Releases from Light-Water-Cooled Nuclear Power Reactors.
(Withdrawn -- See 41 FR 11891, 03/22/1976)		 W 03/1976  
1 03/1974  
1.43

Control of Stainless Steel Weld Cladding of Low-Alloy Steel Components

- HISTORY

 1 03/2011

Reviewed in 2026 – Reviewed with no issues identified

Reviewed in 2016 – Reviewed with no issues identified
0 05/1973  
1.44

Control of the Processing and Use of Stainless Steel

- HISTORY

 1 03/2011

Reviewed in 2026 – Reviewed with no issues identified

Reviewed in 2016 – Reviewed with no issues identified
0 05/1973  
1.45

Guidance on Monitoring and Responding to Reactor Coolant System Leakage

- HISTORY

  • 03/2016 – Periodic Review of Revision 1 – No issues identified
  • Prior to the issuance of Revision 1, RG 1.45 was entitled "Reactor Coolant Pressure Boundary Leakage Detection Systems"
 1 05/2008 Reviewed in 2016 – No issues identified
0 05/1973  
1.46 Protection Against Pipe Whip Inside Containment
(Withdrawn -- See 50 FR 9732, 03/11/1985)		 W 03/1985  
0 05/1973  
1.47

Bypassed and Inoperable Status Indication for Nuclear Power Plant Safety Systems

- HISTORY

  • 10/2008 – DG-1205, Proposed Revision 1
 1 02/2010 Periodic Review January 2016 – No Action
0 05/1973  
1.48 Design Limit and Loading Combinations for Seismic Category I Fluid System Components
(Withdrawn -- See 50 FR 9732, 03/11/1985)		 W 03/1985  
0 05/1973  
1.49 Power Levels of Nuclear Power Plants
(Withdrawn -- See 72 FR 36737, 07/05/2007)		 W 07/2007  
1 12/1973  
0 05/1973  
1.50

Control of Preheat Temperature for Welding of Low-Alloy Steel

- HISTORY

 1 03/2011

Reviewed in 2026 – Reviewed no issues identified

Reviewed in 2016 – Reviewed no issues identified
0 05/1973  
1.51 Inservice Inspection of ASME Code Class 2 and 3 Nuclear Power Plants components
(Withdrawn -- See 40 FR 30540, 07/21/1975)		 W 07/1975  
0 05/1973  
1.52

Design, Inspection, and Testing Criteria for Air Filtration and Adsorption Units of Post-Accident Engineered-Safety-Feature Atmosphere Cleanup Systems in Light-Water-Cooled Nuclear Power Plants

- HISTORY

  • 12/2011 – DG-1274, Proposed Revision 4
  • 10/2000 – DG-1102, Proposed Revision 3
 4 09/2012 Periodic Review – August 2023 - Revise
3 06/2001  
2 03/1978  
1 07/1976  
0 06/1973  
1.53

Application of the Single-Failure Criterion to Safety Systems

- HISTORY

  • 12/2016 – Periodic Review of Revision 2 – Issues identified for future consideration
  • 10/2011 – Periodic Review of Revision 2 – No issues identified
  • Prior to the issuance of Revision 1, RG 1.53 was entitled "Application of the Single-Failure Criterion to Nuclear Power Plant Protection Systems"
  • 05/2002 – DG-1118, Proposed Revision 1
 2 11/2003 Reviewed in 2016 – Issues identified for future consideration
1 10/2003  
0 06/1973  
1.54

Service Level I, II, and III Protective Coatings Applied to Nuclear Power Plants

- HISTORY

 3 04/2017  
2 10/2010  
1 07/2000  
0 06/1973  
1.55 Concrete Placement in Category I Structures
(Withdrawn -- See 46 FR 37579, 07/21/1981)		 W 07/1981  
0 06/1973  
1.56 Maintenance of Water Purity in Boiling Water Reactors (for Comment)
(Withdrawn -- See 75 FR 7526, 02/19/2010)		 W 02/2010  
1 07/1978  
0 06/1973  
1.57

Design Limits and Loading Combinations for Metal Primary Reactor Containment System Components

- HISTORY

  • 10/2006 – DG-1158, Proposed Revision 1
 2 05/2013  
1 03/2007  
0 06/1973  
1.58

Qualification of Nuclear Power Plant Inspection, Examination and Testing Personnel
(Withdrawn -- See 56 FR 36175, 07/31/1991)

- HISTORY

  • Task RS 901-5, Proposed Revision 1
 W 07/1991  
1 09/1980  
1.59

Design Basis Floods for Nuclear Power Plants

- HISTORY

 DG 07/2024 DG-1290 Rev 1
2 08/1977 09/2014 – PR – Revise
1 04/1976  
0 08/1973  
1.60

Design Response Spectra for Seismic Design of Nuclear Power Plants

- HISTORY

 2 07/2014 Periodic Review - January 2025 - Revise
1 12/1973  
0 10/1973  

To top of page

Page Last Reviewed/Updated Friday, April 17, 2026

Page Last Reviewed/Updated Friday, April 17, 2026