ML23284A274
| ML23284A274 | |
| Person / Time | |
|---|---|
| Issue date: | 12/04/2023 |
| From: | Acevedo M NRC/RES/DE/SGSEB |
| To: | |
| Shared Package | |
| ML23178A178 | List: |
| References | |
| DG-1364 RG 1.61 Rev 3 | |
| Download: ML23284A274 (1) | |
Text
Response to Public Comments on Draft Regulatory Guide (DG)-1364 Damping Values for Seismic Design of Nuclear Power Plants.
Proposed Regulatory Guide (RG) 1.61 On June 13, 2023 the NRC published a notice in the Federal Register (88 FR 38407) that Draft Regulatory Guide, DG-1364, a proposed Revision 2 of Regulatory Guide 1.61 was available for public comment. The Public Comment period ended on July 13, 2023. The NRC received comments from the individuals or organizations listed below. The NRC has combined the comments and NRC staff responses in the following table.
Comments were received from the following:
Mark Shaver for NuScale, Suite 200 1100 Northeast Circle Blvd.
Corvallis, Washington, 97330 ADAMS Accession No. ML23194A025 Commenter Section of Specific Comments NRC Resolution DG-1364 NuScale Page 6, The operating-basis earthquake damping value (percent of critical damping) The NRC staff agrees with the comment. It is recommended to Section for steel-plate composite walls is given as a range of 2 to 3 percent. Other keep this damping value at 3 percent, which also will be consistent 1.1.2, structural materials in Table 2 are listed as having single percentage with the American Society of Civil Engineers Standard 43-19. Table Table 2 damping values. It is not clear what value should be selected. 2 in section 1.1.2 will be updated to reflect this recommendation.
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