Document: NRC Regulatory Guide
Document ID: 0b9a3243-ab39-402c-9f4b-215c6e4f79ab
Document Type: regulatory_guide
Title: Inservice Inspection of Ungrouted Tendons in Prestressed Concrete Containments (Rev. 3)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML0037/ML003740007.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.35
CFR Part: 
CFR Title: 

Content:
ontainment be designed to per mit (1) periodic inspection of all important areas and (2) an appropriate surveillance program. This guide describes a basis acceptable to the NRC staff for developing an appropriate inservice inspection and surveillance program for ungrouted tendons' in pre stressed concrete containment structures of light water-cooled reactors. The Advisory Committee on Reactor Safeguards has been consulted concerning this guide and has concurred in the regulatory position. Any information collection activities mentioned in this regulatory guide are contained as requirements in 10 CFR Part 50, which provides the regulatory ba sis for this guide. The information collection require ments in 10 CFR Part 50 have been cleared under OMB Clearance No. 3150-0011. B. DISCUSSION Following the issuance for public comment of the proposed Revision 3 of this regulatory guide (Task SC 'For the purpose of this guide, a tendon is defined as a separate continuous multiwire or multistrand tensioned ele ment anchored at both ends to an end anchorage assembly. 810-4) and of the accompanying proposed Regula tory Guide 1.35.1 (Task SC 807-4) in April 1979, the NRC Office of Research awarded a contract to Oak Ridge National Laboratory (ORNL). The con tract work included evaluating actual inspections per formed by licensees, the methods of implementing Revision 2 of this guide, and the opinions and prob lems of utilities, A/Es, vendors, etc., related to Revi sion 2 of this regulatory guide. The contractor also considered the pertinent portion of the January 1982 draft version of "Inservice Inspection of Concrete Pressure Components," developed by a Working Group of ASME Section XI, in making final sugges tions for modifying this guide. These suggestions were published in NUREG/CR-2719.2 This guide has been revised to reflect public com ments, suggestions from ORNL, and additional staff review. Regulatory Position 1 provides general informa tion on the applicability of the