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:
rformed. Application of these ASME Code criteria also provides assurance of an extremely low probability of abnormal leakage, rapidly propagating failure, or gross rupture. The applicant has conformed to these ASME Code criteria and the guidance in RG 1.65, and, therefore, meets the requirements of 10 CFR 50, Appendix A, as well as GDC 1, 14, and 30. 2. The fracture toughness tests provided for in the ASME Code, as augmented by the requirements of Appendix G of 10 CFR Part 50, provide reasonable assurance that adequate safety margins against nonductile behavior or rapidly propagating fracture will be provided for threaded fastener materials used in ASME Code Class 1, 2 and 3 systems. The applicant has conformed to these criteria and, therefore, meets the requirements of 10 CFR 50.55a and GDC 31. 3. The applicant has identified special processes used for threaded fasteners. Since the applicant has certified that the materials and fabrication criteria of Section III of the ASME Code have been complied with, the staff considers the special processes used to be acceptable. 4. The threaded fastener materials are compatible with the materials of the components being joined. Lubricants and sealants are compatible with the materials of the components being joined and with the piping system fluids. Following the criteria of the ASME Code, Section III ensures that the level of general corrosion of threaded fasteners will be acceptable. The applicant has provided evidence of compatibility of threaded fasteners with the materials being joined and with the piping system fluids as well as compliance with ASME Code criteria. Therefore, the applicant meets the requirements of GDC 4 relative to compatibility of components with environmental conditions. 5. The applicant’s controls to avoid contamination that could lead to SCC conform to the recommendations of RG 1.37. These controls satisfy the requirements of 10 CFR 50, Appendix B, Criterion XIII with respect to controls for