Document: NUREG-0800
Document ID: 48fcca4d-4efe-4600-b4ca-9911efb87843
Document Type: srp
Title: and 5.2.1.2.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070446.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.2.1.1
CFR Part: 
CFR Title: 

Content:
37, assurance is provided that the steam generator materials are protected from damage due to corrosion or contamination, thus providing a high degree of certainty that assigned steam generator safety functions will be performed and the health and safety of the public will be protected. III. REVIEW PROCEDURES The reviewer will select and emphasize material from the procedures described below, as may be appropriate for a particular case. 5.4.2.1-9 DRAFT Rev. 3 - April 1996 For each area of review, the following review procedure is used by the reviewer : 38 A. Materials ReviewPrimary Reviewer39 1. Selection and Fabrication of Materials The reviewer examines the materials and fabrication procedures as given in the SAR for Class 1 and Class 2 components of the steam generators, to determine the degree of conformance with the acceptance criteria stated in subsection II.A.1 of this SRP section, 40 and verifies that information relative to toughness tests is in conformance with the acceptance criteria stated in subsection II.A.1.b, above. The reviewer verifies that the tubes are properly welded and expanded into the tube sheet, and that proper care is taken to maintain cleanliness during fabrication, assembly, and installation of the unit. If stainless steel materials are used in the design of the steam generator, the reviewer should verify that the applicant has adequately addressed the potential for intergranular stress corrosion cracking (IGSCC). The reviewer should use the applicable criteria of SRP Section 5.2.3, "Reactor Coolant Pressure Boundary Materials," as they relate to material selection and fabrication process controls for stainless steel.41 Operating experience has indicated that certain nickel-chromium-iron alloys (e.g. Inconel) are susceptible to cracking due to corrosion. Thermally treated Inconel 690 alloy has improved corrosion resistance in comparison to Inconel 600 alloy previously used in steam generator applications. Where nickel-chromium-iron