Document: NUREG-0800
Document ID: 93695235-ba5b-4bfb-be93-d9aec2460bd0
Document Type: srp
Title: STEAM AND FEEDWATER SYSTEM MATERIALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0631/ML063190016.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.3.6
CFR Part: 
CFR Title: 

Content:
iteria provide acceptable methods of compliance with the NRC regulations. 10.3.6-5 Revision 3 - March 2007 1. Materials Selection and Fabrication of Class 2 and 3 Components A. The materials specified for use in Class 2 and 3 components should conform to Appendix I to Section III of the Code and to Parts A, B, and C of Section II of the Code. B. Regulatory Guide 1.84, describes acceptable Code Cases that may be used in conjunction with the above specifications. Appendix IV to Section III of the Code provides requirements for approval of new materials. C. Regulatory Guide 1.71 provides the following guidelines for assuring the integrity of welds in locations of restricted direct physical and visual accessibility. i. The performance qualification should require testing of the welder under simulated conditions when conditions of accessibility to production welds are less than 30 to 35 cm (12 to 14 inches) in any direction from the joint. ii. Requalification should be required for significantly different restricted accessibility conditions or when any essential welding variables listed in Code Section IX are changed. D. Regulatory Guide 1.50 provides methods to control preheat temperatures for welding low alloy steel. For carbon steel and low alloy steel materials, Section III, Appendix D, Article D-1000 of the ASME Code specifies preheat temperatures. E. Regulatory Guide 1.37 and ANSI Standard N45.2.1-1973, "Cleaning of Fluid Systems and Associated Components During Construction Phase of Nuclear Power Plants," describe acceptable procedures for cleaning and handling Class 2 and 3 components of the steam and feedwater systems. F. Acceptance criteria for nondestructive examination of tubular products are provided in the relevant paragraphs of Subsections NC and ND of Section III of the ASME Code. 2. Fracture Toughness of Class 2 and 3 Components The fracture toughness properties of the ferritic materials of these components should meet the following requirements of the