Document: NRC Regulatory Guide
Document ID: 47283fef-08ff-4021-afa3-0c8370080b94
Document Type: regulatory_guide
Title: Inservice Inspection of ASME Code Class 2 and 3 Nuclear Power Plants components
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1335/ML13350A361.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.51
CFR Part: 
CFR Title: 

Content:
4" '*1*. ( L. 4` U.S. ATOMIC ENERGY COMMISSION R GULATORY DIRECTORATE OF REGULATORY STANDARDS May 1973 GUIDE INSEF REGULATORY GUIDE 1.51 IVICE INSPECTION OF ASME CODE CLASS 2 AND 3 NUCLEAR POW A. INTRODUCTION General Design Criteria 36. "Inspection of Emergency Core Cooling System." 39. "Inspection of Containment Heat Removal System." 42, "Inspection of Containment Atmosphere Cleanup Systems," and 45. "Inspection of Cooling Water System," of Appendix A to 10 CFR Part 50. "Generzl Desian Criteria for Nuclear Power Plants," require that the subject systems be designed to permit appropriate periodic inspection of important component parts of the systems to assure system integrity and capability. Regulatory Guide 1.26 (Safety Giuide 26). "Quality Group Classification and Standards," in conjunction with § 50.55a of 10 CFR Part 50 describes a quality classification system related to specified industry codes that may be used to determine quality standards for water- and steam-containing components important to the safety of water-cooled nuclear power plants. This guide describes acceptable methods of implementing the periodic inservice inspection requirements for American Society of Mechanical Engineers (ASME) Code Class 2 and 3 components. This guide applies to light-water-cooled reactors. The Advisory Committee on Reactor Safeguards has been consulted concerning this guide and has concurred in the regulatory position. B. DISCUSSION The ASME Boiler and Pressure Vessel Code (ASME B&PV Code), Section XI, "Rules for Inservice Inspection of Nuclear Reactor Systems."' specifies requirements for ilservice inspection of Code Class 12 'Copies may he obtained from American Society of Mechanical Enqincers. United Engineering Center, 345 Ea'st 47th Street, New York, N.Y. 100 17. IC6mponents classified as AEC Quality Group A. B, and C should conform to the requirements of the ASSlI' Boiler and Pressure Vessel Code for Class I. 2. and 3 components, resp ctively. TER PLANT COMPONENTS