Spotlight
Power Reactors (Division 1): Regulatory Guides 1.121 - 1.140
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 | Publish Date |
Additional Information |
|---|---|---|---|---|
| 1.121 | Bases for Plugging Degraded PWR Steam Generator Tubes (for Comment) | 0 | 08/1976 | Periodic Review – May 2023 – Considerations Reviewed in 2013 – No issues identified |
| 1.122 |
Development of Floor Design Response Spectra for Seismic Design of Floor-Supported Equipment or Components | 1 | 02/1978 | Reviewed in 2019 – Issues identified for future consideration |
| 0 | 09/1976 | |||
| 1.123 | Quality Assurance Requirements for Control of Procurement of Items and Service for Nuclear Power Plants (Withdrawn -- See 56 FR 36175, 07/31/1991) |
W | 07/1991 | |
| 1 | 07/1977 | |||
| 0 | 10/1976 | |||
| 1.124 | Service Limits and Loading Combinations for Class 1 Linear-Type Supports | 3 | 07/2013 | Periodic Review – September 2023 - Revise |
| 2 | 02/2007 | Periodic Review - March 2013 - Revise | ||
| 1 | 01/1978 | |||
| 0 | 11/1976 | |||
| 1.125 | Physical Models for Design and Operation of Hydraulic Structures and Systems for Nuclear Power Plants | 2 | 03/2009 | Reviewed in 2014 – Issues identified for future consideration |
| 1 | 10/1978 | |||
| 0 | 03/1977 | |||
| 1.126 | An Acceptable Model and Related Statistical Methods for the Analysis of Fuel Densification | 2 | 03/2010 | Reviewed in 2015 – No issues identified |
| 1 | 03/1978 | |||
| 0 | 03/1977 | |||
| 1.127 | Inspection of Water-Control Structures Associated with Nuclear Power Plants | 2 | 02/2016 | |
| 1 | 03/1978 | |||
| 0 | 04/1977 | |||
| 1.128 | Installation Design and Installation of Vented Lead-Acid Storage Batteries for Nuclear Power Plants | 3 | 04/2024 | |
| 2 | 02/2007 |
Periodic Review – May 2023 – Revise Periodic Review – May 2013 – No Action |
||
| 1 | 10/1978 | |||
| 0 | 04/1977 | |||
| 1.129 | Maintenance, Testing, and Replacement of Vented Lead-Acid Storage Batteries for Production and Utilization Facilities + HISTORY |
4 | 03/2023 | |
| 3 | 09/2013 | |||
| 2 | 02/2007 | |||
| 1 | 02/1978 | |||
| 0 | 04/1977 | |||
| 1.130 | Service Limits and Loading Combinations for Class 1 Plate-and-Shell-Type Component Supports | 3 | 07/2013 | Periodic Review - September 2023 - Revise |
| 2 | 03/2007 | Periodic Review – March 2013 - Revise | ||
| 1 | 10/1978 | |||
| 0 | 07/1977 | |||
| 1.131 | Qualification Tests of Electric Cables, Field Splices, and Connections for Light-Water-Cooled Nuclear Power Plants (for Comment) (Withdrawn -- See 74 FR 18000, 04/20/2009) |
W | ||
| 0 | 08/1977 | |||
| 1.132 | Geologic and Geotechnical Site Characterization Investigations for Nuclear Power Plants | 3 | 12/2021 | |
| 2 | 10/2003 | |||
| 1 | 03/1979 | |||
| 0 | 09/1977 | |||
| 1.133 | Loose-Part Detection Program for the Primary System of Light-Water-Cooled Reactors | 1 | 05/1981 | Reviewed in 2015 – Issues identified for future consideration |
| 0 | 09/1977 | |||
| 1.134 | Medical Assessment of Licensed Operators or Applicants for Operator Licenses at Nuclear Power Plants | 4 | 09/2014 | Periodic Review – May 2025 – Reviewed with No Issues Identified |
| 3 | 03/1998 | |||
| 2 | 04/1987 | |||
| 1 | 03/1979 | |||
| 0 | 09/1977 | |||
| 1.135 | Normal Water Level and Discharge at Nuclear Power Plants (for Comment) (Withdrawn -- See 74 FR 39349, 08/06/2009) |
W | 08/2009 | |
| 0 | 09/1977 | |||
| 1.136 | Design Limits, Loading Combinations, Materials, Construction, and Testing of Concrete Containments | 4 | 02/2021 | |
| 3 | 03/2007 | |||
| 2 | 06/1981 | |||
| 1 | 10/1978 | |||
| 0 | 11/1977 | |||
| 1.137 | Fuel Oil Systems for Emergency Power Supplies | 2 | 06/2013 | Periodic Review – September 2023 - Revise |
| 1 | 10/1979 | |||
| 0 | 01/1978 | |||
| 1.138 | Laboratory Investigations of Soils and Rocks for Engineering Analysis and Design of Nuclear Power Plants | 3 | 12/2014 | January 2025 - No issues identified |
| 2 | 12/2003 | |||
| 1 | 04/2003 | |||
| 0 | 04/1978 | |||
| 1.139 | Guidance for Residual Heat Removal (for Comment) (Withdrawn -- See 73 FR 32750, 06/10/2008) |
W | 06/2008 | |
| 0 | 05/1978 | |||
| 1.140 | Design, Inspection, and Testing Criteria for Air Filtration and Adsorption Units of Normal Atmosphere Cleanup Systems in Light-Water-Cooled Nuclear Power Plants | 3 | 08/2016 | |
| 2 | 06/2001 | |||
| 1 | 10/1979 | |||
| 0 | 03/1978 |
Page Last Reviewed/Updated Friday, July 18, 2025
Page Last Reviewed/Updated Friday, July 18, 2025