Document: NUREG-0800
Document ID: 4a46b35d-2e81-4517-9716-154b19f57049
Document Type: srp
Title: REACTOR COOLANT PRESSURE BOUNDARY MATERIALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0631/ML063190006.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.2.3
CFR Part: 
CFR Title: 

Content:
REVIEW RESPONSIBILITIES Primary - Organization responsible for review of component integrity issues related to reactor coolant pressure boundary Secondary - Organization responsible for the review of component integrity issues related to reactor vessels Organization responsible for the review of component integrity issues related to steam generator tubes Organization responsible for the review of chemical engineering issues Organization responsible for the review of materials engineering issues related to flaw evaluation and welding I. AREAS OF REVIEW The following areas relating to materials of the reactor coolant pressure boundary (RCPB) other than the reactor pressure vessel - which is covered in Standard Review Plan (SRP) Section 5.3.1, “Reactor Vessel Materials,” - are reviewed: 1. Material Specifications. The specifications for pressure-retaining ferritic materials, nonferrous metals 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 the primary reviewer with support from the secondary reviewers. The adequacy and suitability of the ferritic materials, stainless steels, and nonferrous metals specified for the above applications are determined. 5.2.3-2 Revision 3 - March 2007 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 is reviewed by the organization responsible for chemical engineering issues as part of its primary review responsibility for SRP Sections 5.4.8 and 9.3.4. The organization responsible for chemical engineering issues also reviews the compatibility of the materials of construction employed in the RCPB with the reactor coolant,