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:
tory Guide 1.84, 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 allows fracture toughness 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 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." The applicant has considered system piping and component size, configuration, and geometry, water chemistry, piping and component material, fluid temperature (including flash points), and fluid velocity in its evaluation of flow-accelerated corrosion. For design certification and combined license reviews, the findings will also summarize (to the extent that the review is not discussed in other safety evaluation report sections) the staff's 10.3.6-9 Revision 3 - March 2007 evaluation of the ITAAC, including design acceptance criteria (DAC), as applicable,