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:
ment 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 combination for construction given in Table CC-3230-1 of the ASME Code. Where SEI/ASCE Standard 37 and the ASME Code provide conflicting criteria, then the ASME Code should govern. b. The integrity of the containment structure should additionally be demonstrated for the combustible gas loading conditions listed below. The acceptance criteria are limited to demonstrating that liner strains satisfy the factored load category requirements in CC-3720, “Liner,” of the Code. These loading conditions should include the effect of temperature. For prestressed concrete containment the effects of prestress should also be included. The analysis to demonstrate containment structural integrity should account for applicable additional considerations in RG 1.216. (1) For the factored load category: D + Pg1 + [Pg2 or Pg3] where D = dead load Pg1 = pressure resulting from an accident that releases hydrogen generated from 100-percent fuel clad metal-water reaction Pg2 = pressure resulting from uncontrolled hydrogen burning Pg3 = pressure resulting from post-accident inerting, assuming carbon dioxide is the inerting agent RG 1.7 provides additional guidance on the pressure load Pg3 due to combustible gas concentration for satisfying the requirements in 10 CFR 50.44(c). (2) For the service load category, the strains in the containment liner should not exceed the limits given in CC-3720 when exposed to pressure Pg3. (3) As a minimum design condition for either condition 1 or 2 above, the following load DG-1372, Page 18 combination should be satisfied for water-cooled reactor designs, with characteristics (e.g., type and quantity of cladding materials) such that the potential for production of combustible gases is comparable to LWR designs licensed as of October 16, 2003, to which only