Document: NRC Regulatory Guide
Document ID: 43a088bc-92fe-4dbd-8f2e-9b5863bef228
Document Type: regulatory_guide
Title: Qualifications for Cement Grouting for Prestressing Tendons in Containment Structures (Rev. 2)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1623/ML16232A247.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.107
CFR Part: 
CFR Title: 

Content:
Regulatory Guide Periodic Review Regulatory Guide Number: 1.107, Revision 2 Title: Qualification for Cement Grouting for Prestressing Tendons in Containment Structures Office/division/branch: RES/DE/SGGEB Technical Lead: Ramón L. Gascot 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)? RG 1.107, Revision 2 (Rev.2) “Qualification for Cement Grouting for Prestressing Tendons in Containment Structures” published in June 2011, describes the method that the NRC staff considers acceptable for the use of portland cement grout as the corrosion inhibitor for prestressing tendons in prestressed concrete containments. This guide also provides quality standards for using portland cement grout to protect steel from corrosion. The recommendations of this guide are applicable when portland cement grout is used as the corrosion inhibitor for the highly stressed tendons of prestressed concrete containment structures. The recommendations of this guide are not intended for use in relation to the grout for foundation anchors. RG 1.107 endorses with exceptions the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section III, Division 2, 2001 edition through 2003 Addenda, “Code for Concrete Reactor Vessels and Containments,” and the 2001 “Guide Specification for Grouting of Post-Tensioned Structures,”1st Edition of the Post-Tensioning Institute/American Segmental Bridge Institute. Subsequently both have been revised. The most recent version of the former is 2015 and the latter 2012. Ultimately RG 1.107 should be updated in light of these revised standards. 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? This guide is applicable to BWR and PWR concrete