Document: NRC Regulatory Guide
Document ID: 0ae1e098-eccd-43e7-b12e-43b05aa1fe48
Document Type: regulatory_guide
Title: Safety-Related Concrete Structures for Nuclear Power Plants (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1617/ML16172A240.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.142
CFR Part: 
CFR Title: 

Content:
sions to ACI 349-13 or provide equivalent provisions: a. provision for crack control under design load combinations that include LOCA loads; b. provisions to deal with the transition from the concrete portion of the drywell to the steel portion of the drywell; and c. provisions for preoperational testing and inservice inspections. 2. Regulatory Position 2 2.1 Where interconnected structural components, such as walls, slabs, and foundations, exhibit a structural response consistent with the response of structural frames, such components should conform to the requirements of Chapters 10, 11, and 21 of ACI 349-13, in addition to Chapters 13, 14, and 15 as appropriate. Treat the response of structural components in a manner consistent with the response of structural frames if the flexural moment from seismic loads is equal to or exceeds two-thirds of the design flexural capacity of the section in the absence of axial forces. 2.2 For performance criteria of mechanical splices, follow the additional splice qualification requirements in CC-4333 from ASME B&PV Code, Section III, Division 2 (ACI 359-15), with the exception that the strength requirement of an individual mechanical splice should be in accordance with Section 12.14.3.2 of ACI 349-13. Test and evaluate the mechanical splices in accordance with ASTM A1034, “Standard Test Methods for Testing Mechanical Splices for Steel Reinforcing Bars” (Ref. 21). Perform additional testing and evaluation for impactive and impulsive loading conditions, where the mechanical splices are subjected to such loading that causes high strain rate. Conduct the slip test for two mechanical splice samples in accordance with Section 10.7 of ASTM A1034 to a predetermined load equal to one-half the specified yield strength (0.5Fy) of the steel reinforcing bar. Ensure that the measured slip does not exceed the DG-1283, Page 10 values in Table 1 of this RG. The table was derived from California Department of Transportation “Authorization