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:
ssibility. (a) The performance qualification should require testing of the welds when conditions of accessibility to production welds are less than 30 to 35 cm (12-14 inches) in any direction from the joint. (b) Requalification is required for different accessibility conditions or when other essential variables listed in the Code, Section IX, are changed. (c) The qualification and requalification tests required by 2.bc(1)(a) and (b) above may be waived provided that the joint is to be 100% radiographed or ultrasonically examined after completion of the weldment. Examination procedures and acceptance standards 31 should meet the requirements of the ASME Code Section III. Records of the examination reports and radiographs should be retained and made part of the Quality Assurance documentation of the completed weld. (2) Regulatory Guide 1.37, "Quality Assurance Requirements for Cleaning of Fluid Systems and Associated Components of Water-Cooled Nuclear Power Plants," and ANSI Standard N45.2.1-1973, "Cleaning of Fluid Systems and Associated Components During Construction Phase of Nuclear Power Plants," (Reference 10) describe acceptable procedures 32 for cleaning and handling Class 2 and 3 components of the steam and feedwater systems. Vented tanks with deionized or demineralized water are an acceptable source of water for final cleaning or flushing of finished surfaces. The oxygen content of the water in these vented tanks need not be controlled. (3) Acceptance criteria for nondestructive examination of tubular products are given in the ASME Code, Section III, Paragraphs NB/NC/ND 2550 through 2570. Technical Rationale:33 DRAFT Rev. 3 - April 1996 10.3.6-6 The technical rationale for application of the above acceptance criteria to the design of steam and feedwater system materials is discussed in the following paragraphs: 1. GDC 1 and 10 CFR 50.55a require that structures, systems, and components be designed, fabricated, erected, constructed, tested and inspected to the