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:
acceptable if the ASME Code, Section III criteria shown in Table 3.13-1 of this SRP section are appropriately specified by the applicant for ASME Code Class 1, 2, and 3 systems. B. Mechanical Testing, Special Process and Controls The criteria for mechanical property testing of threaded fastener materials are provided in the particular ASME Code Section II, Part A, specification under 3.13-5 March 2007 which the material was procured. The material heat treatment and tensile test coupon preparation criteria for threaded fasteners that are fabricated from ferritic materials (i.e., carbon steel, low-alloy steel, quenched and tempered steel) are acceptable if the ASME Code, Section III criteria shown in Table 3.13-1 are appropriately specified by the applicant for ASME Code Class 1, 2, and 3 systems. The applicant 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. Lubricants and sealants in mechanical connections secured by threaded fasteners should be specified to ensure they are compatible with the threaded fasteners. Any mechanical joint using threaded fasteners should be designed to preclude galvanic corrosion. C. Fracture Toughness Requirements for Ferritic Materials The fracture toughness of ferritic bolts, studs, and nuts (i.e., made from either low-alloy steel or carbon steel materials) is acceptable if the ASME Code, Section III criteria shown in Table 3.13-1 are appropriately specified by the applicant for ASME Code Class 1, 2, and 3 systems. Ferritic bolts, studs, and nuts (i.e., bolts, studs, and nuts made from either low-alloy steel or carbon steel materials) used in RCPB applications must also meet the fracture toughness requirements of 10 CFR Part 50, Appendix G. D. Fabrication Inspection The examination criteria for threaded fasteners are acceptable if the ASME Code,