Document: NRC Regulatory Guide
Document ID: 3c238fa7-baa2-41c1-ac85-868fcda6b038
Document Type: regulatory_guide
Title: Design Limits, Loading Combinations, Materials, Construction, and Testing of Concrete Containments + HISTORY – HISTORY 07/2020 – DG-1372 , Proposed Revision 4 05/2019 – Periodic Review of Revision 3 – Revise 10/2015 – Periodic Review of Revision 3 – Reviewed with issues identified for future consideration 10/2006 – DG-1159, Proposed Revision 3 Prior to the issuance of DG-1159, RG 1.136 was entitled "Materials, Construction, and Testing of Concrete Containments (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML2010/ML20105A215.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.136
CFR Part: 
CFR Title: 

Content:
following: a. Combination of SSE and LOCA dynamic responses for all ASME Class 1, 2, or 3 systems, components, or supports. For dynamic responses resulting from the same DG-1372, Appendix A, Page A-2 initiating event, when the time-phase relationship between the responses cannot be established, the absolute summation of these dynamic responses should be used. b. Combining responses of dynamic loads other than LOCA and SSE, if a non-exceedance probability of 84% or higher is achieved for the combined SRSS [square root of sum of the squares] response. Although the above criteria were prepared for ASME systems, components, and supports, they are applicable to seismic Category I structures as well. A-4. REFERENCES A1. NUREG-0484, “Methodology for Combining Dynamic Responses,” Revision 1, Washington, DC, May 1980. (ADAMS Accession No. ML13260A310)