Document: NUREG-0800
Document ID: b17adfa2-7bfa-4f7d-9b7b-7a5df200327f
Document Type: srp
Title: REACTOR INTERNAL AND CORE SUPPORT MATERIALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340586.pdf
Revision Date: 2023-06
Chapter: 4
Section ID: 4.5.2
CFR Part: 
CFR Title: 

Content:
n environmental conditions, process controls must be exercised during all stages of component manufacturing and reactor construction to avoid sensitization of the material, and to minimize exposure of the stainless steel to contaminants that lead to stress-corrosion cracking. The review includes information submitted by the applicant in these areas, as described in SRP Section 5.2.3, "Reactor Coolant Pressure Boundary Materials." 5. Other Materials Materials other than austenitic stainless steels are reviewed and evaluated in terms of their mechanical properties, corrosion resistance, and fabricability. II. ACCEPTANCE CRITERIA The design, fabrication, and testing of the materials used in the reactor internal and core support structure are reviewed and evaluated to meet code and standards commensurate with the safety function to be performed so that the relevant requirements of Section 50.55a and General Design Criterion 1 are met. The specific acceptance criteria necessary to meet these relevant requirements are as follows: 1. Material Specifications For core support and reactor internal structures, the permitted material specifications are those given in the ASME Boiler and Pressure Vessel Code (hereafter "the Code"), Section III, NG-2000. These materials are described in detail in Parts A, B, and C of Section II of the Code. Additional permitted materials are those shown in ASME Code Cases approved for use by Regulatory Guide 1.85, "Code Case Acceptability, ASME Section III Materials." 2. Controls on Welding The welds of components for core support structures and reactor internals are fabricated in accordance with the Code, Section III, NG-4000, and must meet the examination and acceptance criteria shown in NG-5000. 4.5.2-2 Rev. 2 - July 1981 3. Nondestructive Examination of Wrought Seamless Tubular Products and Fittings Examination shall be in accordance with the requirements of ASME Code Section III, NG-2500. The acceptance criteria shall be in accordance with