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:
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 design requirements were specified for improving the ability of concrete to resist alkali-silica reaction and sulfate attack. (CC-2231.3, CC-2231.7.4) • Concrete exposure categories and classes for durability were revised to be consistent with ACI 318-14, “Building Code Requirements for Structural Concrete” (Ref. 29). (CC-2231.7, Table CC-2231.7.1-1, and Table CC-2231.7.2-1) • Provisions were added requiring radial tension reinforcement in portions of prestressed concrete containments with single curvature and double curvature. (CC-3545) DG-1372, Page 8 • The 2016 edition of material specifications ASTM A615, “Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete” (Ref. 30), and ASTM A706, “Standard Specification for Deformed and Plain Low-Alloy Steel Bars for Concrete Reinforcement” (Ref. 31) were incorporated for reinforcing steel allowing use of Grade 75 and Grade 80 high-strength reinforcement bars. Additional conditions, included in ASTM A706-16, are also specified for ASTM A615 reinforcing steel material to ensure ductility: (1) actual yield strength shall not exceed specified minimum yield strength by more than 18,000 pounds per square inch (psi) (125 megapascals (MPa)), (2) the ratio of actual tensile strength to actual yield strength shall not be less than 1.25, and (3) for Grade 60, Grade 75, and Grade 80 bars, new minimum elongations consistent with those for ASTM A706 material are specified for different bar sizes. (Table NCA-7100-3, CC-2300, CC-2331.2) • Footnote (2) was added to Table CC-3230-1, “Load Combinations and Load Factors,” regarding treatment of load combinations involving the OBE when the OBE is set equal to one-third or less of the SSE, consistent with 10 CFR Part 50, Appendix S. • An upper