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:
icle CC-3000 of the Code, with the exceptions listed below to Table CC-3230-1. (1) Hydrodynamic loads resulting from LOCA and/or SRV actuation for boiling-water reactor concrete containments should be combined according to the approach contained in Appendix A of this RG, “Staff Position on Boiling-Water Reactor Containment Pool Dynamics.” Fluid-structure interaction associated with these hydrodynamic loads and those from earthquakes should be included. DG-1372, Page 17 (2) Where post-LOCA flooding is a design consideration, the design evaluation should be performed using the load combinations in the Code containing internal flooding along with OBE (except where OBE is set at one-third or less of the SSE) and internal flooding along with design wind. (3) Loads to be protected against during extreme environmental conditions include those induced by the design-basis tornado, hurricane, and the SSE specified for the plant site. Therefore, the Wt load in CC-3222.2, in CC-3240, and in the load combinations in Table CC-3230-1 should include worst case extreme winds (tornados and hurricanes) and corresponding wind-generated missiles. (4) Other site-related or plant-related loads applicable to containment such as floods, explosive hazards in proximity to the site, potential aircraft crashes (nonterrorism-related incidents), and missiles generated from activities of nearby military installations or turbine failures should be evaluated and included, as applicable, in the appropriate factored load combinations. (5) Loads encountered during construction of the containment should include dead loads, live loads, prestress loads, temperature, wind, earth pressure, snow, rain, and ice, and other construction loads that may be applicable such as material loads, personnel and equipment loads, horizontal construction loads, erection and fitting forces, equipment reactions, and form pressure. ASCE/SEI Standard 37 gives additional guidance on construction loads for use in the load