Document: NUREG-0800
Document ID: 25864ed2-efde-4c4d-a9b6-0ea7a7f662d9
Document Type: srp
Title: COMPLIANCE WITH THE CODES AND STANDARDS RULE, 10 CFR § 50.55a
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340592.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.2.1.1
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Mechanical Engineering Branch (MEB) Secondary - None I. AREAS OF REVIEW In order to establish that pressure-retaining components of the reactor coolant pressure boundary and other fluid systems important to safety of water-cooled nuclear power plants are in compliance with the Codes and Standards Rule 10 CFR § 50.55a, an applicant is required to provide a table in his safety analysis report (SAR) identifying pressure vessels, piping, pumps and valves and the component Code, Code Edition, applicable Addenda, and component order date (where applicable) for each component. 10 CFR § 50.55a requires that pressure-retaining components of the reactor coolant pressure boundary be designated as Class 11 components and constructed2 in accordance with the rules of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code, Section III, Division 1 (here- after the Code), except for components which meet the exclusion requirements of footnote 2 of the rule; Components of the reactor coolant pressure boundary which meet the exclusion requirements of footnote 2 may be classified as Quality Group B in accordance with Regulatory Guide 1.26 and constructed as Class 2 components in accordance with the Code. The Codes and Standards Rule also requires that pressure-retaining components of other fluid systems important to safety be designated as Class 2,3-Class 3, and Class MC4 components and constructed in accordance with the rules of the Code. 'Editions of the Code prior to 1971 use .the term Class A in lieu of Class 1. 2Constructed, as used herein, is an all-inclusive term comprising materials certification, design, fabrication, examination, testing, inspection, and certification required in the manufacture and installation of components. 3Editions of the Code prior to 1971 use the term Class C in lieu of Class 2. 4Editions of the Code prior to 1971 use the term Class B in lieu of Class MC. Rev. 2 - July 1981 USNRC STANDARD