Document: NRC Regulatory Guide
Document ID: 2e29f931-cdf2-4faa-a9e4-5d7cb237e57f
Document Type: regulatory_guide
Title: Service Limits and Loading Combinations for Class 1 Plate-and-Shell-Type Component Supports + HISTORY – HISTORY 10/2006 – DG-1169 , Proposed Revision 2
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0630/ML063000484.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.130
CFR Part: 
CFR Title: 

Content:
no value/impact considerations. DG-1169, Page 9 3.2 Alternative 2: Update Regulatory Guide 1.130 Under this alternative, the NRC would update Regulatory Guide 1.130 to incorporate revisions documented in the newer edition and addenda of the ASME Code and to delete guidance supplanted by current Code requirements. The benefit of this action is to provide additional assurance to applicants and licensees that the design of Class 1 plate-and-shell-type component supports is being implemented conservatively. The costs to the NRC would be the one-time, relatively small expense of issuing the revised regulatory guide, and applicants and licensees would incur little or no cost. 4. Conclusion On the basis of this regulatory analysis, the staff recommends that the NRC revise Regulatory Guide 1.130. The staff concludes that the proposed action will provide additional assurance to applicants and licensees that the design of Class 1 plate-and-shell-type component supports is being implemented conservatively. BACKFIT ANALYSIS This draft revision to the regulatory guide provides licensees and applicants with updated guidance that the NRC staff considers acceptable for the design of Class 1 plate-and-shell-type component supports. The application of this regulatory guide is voluntary. Licensees may continue to use the original version of this regulatory guide if they so choose. No backfit, as defined in 10 CFR 50.109, “Backfitting,” is either intended or implied.