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:
ion of the Code. The NRC staff has evaluated the provisions contained in Articles CC-1000 through CC-6000 of the Code. This RG endorses Articles CC-1000 through CC-6000 of the Code with the exceptions and clarifications noted below. This RG also provides additional guidance on loads and load combinations including combustible gas loading conditions, design and analysis, and a method for determining the ultimate capacity of a concrete containment. In those areas where the provisions of the referenced Code are insufficient for licensing purposes, the staff has provided supplementary guidelines, as part of the regulatory positions presented in DG-1372, Page 9 Section C of this guide. The reasons and basis for the supplementary guidance for regulatory positions that are not self-explanatory are as follows. Discussion of Staff Regulatory Guidance Positions Regulatory Position 1 CC-2232.41: Basis for Selection of Self-Consolidating Concrete (SCC) In Regulatory Position 1 the staff does not endorse the general use of SCC for containment construction. It further clarifies the limited use of alternative concrete mixture provisions (reproportioning or SCC) provided in the text of the Code provision to localized sites and conditions where consolidation of concrete is unusually difficult. The regulatory position also refers to ASTM standards C1610/C1610M, C1611/C1611M, C1712/C1712M, C1758/C1758M (Refs. 33, 34, 35, 35) and industry best practices in ACI 237R (Ref. 36) if SCC is used for this purpose Regulatory Position 2 CC-2243: Grout for Grouted Tendon System Regulatory Position 2 provides guidance to supplement paragraph CC-2243 with respect to grouting of prestressing tendons. This is intended to provide assurance of the integrity of grouted tendons that cannot be directly inspected during the life of the containment. Regulatory Position 3 CC-2311: Mechanical Anchorage Devices Regulatory Position 3 addresses dimensions of obstructions for headed bars such that the