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:
s the acceptability of the Section III Code Cases related to Division 2 of the ASME B&PV Code, Section III. The Division 2 Code Cases addressed in this RG include those listed in RG 1.84, Revision 38, “Design, Fabrication and Materials Code Case Acceptability, ASME Section III,” issued October 2019 (Ref. 26); RG 1.193, Revision 6, “ASME Code Cases Not Approved for Use,” issued October 2019 (Ref. 27); as well as any later Division 2 Code Cases published up to the release of the 2019 Edition of the ASME B&PV Code, “Code Cases—Nuclear Components,” dated July 1, 2019 (Ref. 28). Of the above RGs, RG 1.84 is incorporated by reference in 10 CFR 50.55a. The staff plans to remove the Division 2 Code Cases from these RGs in the next revision to them and the Division 2 Code Cases will be located only in this guide (RG 1.136). Background ASME and ACI have jointly published the ASME Section III, Division 2 (ACI 359), “Code for Concrete Containments.” This code establishes rules for materials, design, fabrication, construction, examination, testing, and preparation of reports for prestressed and reinforced concrete containments for nuclear power reactors. The containments covered by the Code include (1) structural concrete pressure-resisting shells and shell components, (2) shell metallic liners, and (3) penetration liners extending the containment liner through the surrounding shell concrete. Since the last revision of RG 1.136 in 2007, the Code has been updated several times, most recently in 2019. The 2019 Edition of the Code includes significant technical changes and additions to the Code provisions, along with editorial improvements and clarifications that have occurred over several editions and addenda since 2004. Significant changes or additions to the Code provisions (indicated within parentheses in bullets below) since the publication of RG 1.136, Revision 3, and incorporated in the 2019 Edition include the following: • Concrete material and mix