Document: NUREG-0800
Document ID: 638ddb22-e6d2-4b69-855f-e55482aae718
Document Type: srp
Title: STEAM AND FEEDWATER SYSTEM MATERIALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070583.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.3.6
CFR Part: 
CFR Title: 

Content:
50, §50.55a, 10 CFR 50 Appendix A, General Design Criteria 1 and 35, and 10 CFR 50 Appendix B to 10 CFR Part 50. This 42 conclusion is based on the following: The applicant has selected materials for Class 2 and 3 components of the steam and feedwater systems that satisfy Appendix I of Section III of the ASME Boiler and Pressure Vessel Code, and meet the requirements of Parts A, B, or C of Section II of the Code. The applicant has also met the recommendations of Regulatory Guide 1.85 which describes acceptable code cases that may be used in conjunction with this industry standard. When required, the fracture toughness properties of ferritic steel materials satisfy the requirements of the Code. Where the Code allowed fracture testing to be optional, the applicant provided reasonable justification for not requiring fracture toughness testing of ferritic steel components of the main steam and feedwater systems. These fracture toughness tests and mechanical properties required by the Code provide reasonable assurance that ferritic materials will have adequate safety margins against the possibility of nonductile behavior or rapidly propagating fracture. The applicant has met the requirements of Regulatory Guide 1.71, "Welder Qualification for Areas of Limited Accessibility," by meeting the regulatory positions in Regulatory Guide 1.71 or providing and meeting an alternative to the regulatory positions in Regulatory Guide 1.71, that the staff has reviewed and found to be acceptable. The onsite cleaning and cleanliness controls during fabrication satisfy the position given in 10.3.6-9 DRAFT Rev. 3 - April 1996 Regulatory Guide 1.37, "Quality Assurance Requirements for Cleaning of Fluid Systems and Associated Components of Water-Cooled Nuclear Power Plants," and the requirements of ANSI Standard N45.2.1-1973, "Cleaning of Fluid Systems and Associated Components During Construction Phase of Nuclear Power Plants." If austenitic stainless steel is utilized, the review