Document: NUREG-0800
Document ID: fbf00155-ed67-4c5f-bb08-246909eb564a
Document Type: srp
Title: REACTOR COOLANT PRESSURE BOUNDARY MATERIALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340601.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.2.3
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Materials Engineering Branch (MTEB) Secondary - Chemical Engineering Branch (CMEB) I. AREAS OF REVIEW The following areas, which relate to materials of the reactor coolant pressure boundary (RCPB) other than the reactor pressure vessel, which is covered in Stand- ard Review Plan Section 5.3.1, "Reactor Vessel Materials," are reviewed by MTEB and CHEB as indicated. 1. Material Specifications The specifications for pressure-retaining ferritic materials, nonferrous met- als and austenitic stainless steels, including weld materials, that are used for each component (e.g., vessels, piping, pumps, and valves) of the reactor coolant pressure boundary, are reviewed by MTEB. The adequacy and suitability of the ferritic materials, stainless steels, and nonferrous metals specified for the above applications are determined. 2. Compatibility of Materials with the Reactor Coolant General corrosion and stress corrosion cracking induced by impurities in the reactor coolant can cause failures of the reactor coolant pressure boundary. The chemistry of the reactor coolant and the additives (such as inhibitors) whose function is to control corrosion are reviewed by CMEB as part of its primary review responsibility for SRP Sections 5.4.8 and 9.3.4. CMEB reviews the compatibility of the materials of construction employed in the RCPB with the reactor coolant, contaminants, or radiolytic products to which the system is exposed. The extent of the corrosion of ferritic low alloy steels and carbon steels in contact with the reactor coolant is reviewed. Rev. 2 - July 1981 USNRC STANDARD REVIEW PLAN Standard review plans are prepared for the guidance of the Office of Nuclear Reactor Regulation staff responsible for the review of applications to construct and operate nuclear power plants. These documents are made available to the public as part of the Commission's policy to Inform the nuclear Industry and the general public of regulatory procedures and policies.