Document: NUREG-0800
Document ID: 2c1e60ee-a3b4-4f26-8ebd-56dc7a8435b6
Document Type: srp
Title: THREADED FASTENERS ! ASME CODE CLASS 1, 2, AND
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550058.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.13
CFR Part: 
CFR Title: 

Content:
plicant 3.13-10 March 2007 should apply criteria of ASME Code, Section III, Subparagraphs NB-2200, NC- 2200, ND-2200 rather than the criteria of the material specification applicable to the mechanical testing if there is a conflict between the two sets of criteria. The reviewer should ensure that the applicant conforms to the recommendations in RG 1.65 for RV studs. The reviewer should also assess whether the applicant has implemented any special controls to ensure that the surface treats, plating applications, or use of lubricants on RV closure studs are compatible with the stud material at the anticipated operating temperature for the RCPB. Lubricants and sealants in mechanical connections secured by threaded fasteners should be specified by the applicant to ensure maximum compatibility with the threaded fasteners. For example, molybdenum sulfide lubricant is known to promote corrosion in low alloy steel and should not be used. The applicant should provide the technical basis for the acceptability of lubricants or sealants, with reference to accepted industry practice, experience, and supporting data. The guidance for selection of lubricants is provided in NUREG-1339. Any mechanical connection using threaded fasteners should be designed to preclude galvanic corrosion. The application should identify any differences in materials used in mechanical connections and include the technical basis for the compatibility of the materials used, with reference to accepted industry practice, experience, and supporting data. The reviewer should ensure that the applicant conforms to the RG 1.37 quality assurance criteria for cleaning fluid systems and associated components. The reviewer should also confirm conformance to the practices noted in the RG 1.37 that are intended to minimize the probability that SCC will occur in components that are fabricated from either austenitic stainless steel or nickel-based alloys. Additional information summarizing the initiatives of the NRC