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:
Splice with Threaded Ends, Section III, Division 2 See comments for Code Case N-791. 9/20/10 N-796 Threaded Sleeves with Parallel Threads Cut on Upsized Bar Ends, Section III, Division 2 See comments for Code Case N-791. 10/18/10 N-807 Use of Grades 75 and 80 Reinforcement in Concrete Containments, Section III, Division 2 The NRC does not endorse the generic use of higher grades of steel for the reinforcement of concrete containment construction. Among other potential issues, higher grades may reduce the ductility of the steel reinforcement and thereby reduce the overall ductility of the containment 4/20/2011 DG-1372, Page 24 CODE CASE NUMBER CODE CASE TITLE REASON(S) FOR UNACCEPTABILITY DATE structure, which is undesirable. Also, research and development related to use of high-strength reinforcement is still progressing, and there is a lack of operating experience with the use of high-strength reinforcement in the U.S. nuclear power industry. N-837 Alternative to the Registered Professional Engineer Requirements, Section III, Divisions 1, 2, 3, and 5 This Code Case is only for non-U.S. nuclear facilities; therefore, it does not apply to U.S. nuclear facilities regulated by the NRC. 10/22/2013 DG-1372, Page 25 D. IMPLEMENTATION The NRC staff may use this RG as a reference in its regulatory processes, such as licensing, inspection, or enforcement. However, the NRC staff does not intend to use the guidance in this RG to support NRC staff actions in a manner that would constitute backfitting as that term is defined in 10 CFR 50.109, “Backfitting,” and as described in NRC Management Directive 8.4, “Management of Backfitting, Forward Fitting, Issue Finality, and Information Requests” (Ref. 56), nor does the NRC staff intend to use the guidance to affect the issue finality of an approval under 10 CFR Part 52. The staff also does not intend to use the guidance to support NRC staff actions in a manner that constitutes “forward fitting” as that term is defined