Document: NRC Regulatory Guide
Document ID: 42280809-8d61-4537-929f-69224a044bb5
Document Type: regulatory_guide
Title: Inservice Inspection of Prestressed Concrete Containment Structures with Grouted Tendons (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1814/ML18142C165.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.90
CFR Part: 
CFR Title: 

Content:
Regulatory Guide Number: 1.90, Revision 3 Title: In-service Inspection of Prestressed Concrete Containment Structures with Grouted Tendons Office/division/branch: RES/DE/SGSEB Technical Lead: Ramón L. Gascot Lozada Staff Action Decided: Reviewed with issues identified for future consideration 1. What are the known technical or regulatory issues with the current version of the Regulatory Guide (RG)? Regulatory Guide 1.90, Revision 2, “Inservice Inspection of Prestressed Concrete Structures with Grouted Tendons,” issued in November 2012, describes methods that the NRC considers acceptable for use in developing an appropriate in-service inspection (ISI) program for prestressed concrete containment structures with grouted tendons. One issue identified during the review relates to citation of an earlier version of the ASME Boiler and Pressure Vessel Code. Revision 2 of RG 1.90 refers to ASME Boiler and Pressure Vessel Code, Section III, Division 2, Code for Concrete Reactor Vessels and Containments, 2001 Edition through the 2003 Addenda, also known as American Concrete Institute (ACI) Standard 359 which is endorsed by RG 1.136. There is a new version of this code, published in 2013 but there is no significant change in the code that is pertinent to RG 1.90. Staff review concluded that RG 1.90 need not be updated until a further need arises for NRC’s licensing activities. 2. What is the impact on internal and external stakeholders of not updating the RG for the known issues, in terms of anticipated numbers of licensing and inspection activities over the next several years? Only two nuclear power plants in the United States have used grouted tendons: Three Mile Island Nuclear Station, Unit 2 (which is permanently shut down), and H.B. Robinson Steam Electric Plant (vertical tendons only). However, in France, Belgium, South Korea, Canada, and China, the use of grouted tendons in nuclear power plant containment structures has been more common. In addition, at least one