Document: NUREG-0800
Document ID: bf62536e-58c7-4cb0-a51f-5c5ce2c21d6b
Document Type: srp
Title: DRAFT Rev. 2 - April
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070423.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.3.2.9
CFR Part: 
CFR Title: 

Content:
erence temperature at the end of the service lifetime of the reactor vessel, and their withdrawal schedules, shall be in accordance with the requirements of paragraph II.CB.3 of 65 Appendix H. (4) For multiple reactors located at a single site, an integrated surveillance program may be authorized by the Commission on an individual case basis, depending on the degree of commonality and the predicted severity of irradiation in accordance with the requirements of paragraph II.C of Appendix H . 66 The material surveillance program criteria of ASTM E-185 cited in 10 CFR 50, Appendix H, is predicated on an assumed 40-year reactor vessel design life. For those applicants proposing a facility with greater than a 40-year design life, the criteria of ASTM E-185 must be supplemented to provide for monitoring of the reactor vessel materials for the entire reactor vessel design life.67 7. Reactor Vessel Fasteners The acceptance criteria for the reactor vessel bolting material are given by paragraph IV.A.3 of Appendix G to 10 CFR Part 50 and by the recommendations of Regulatory 68 Guide 1.65, "Materials and Inspections for Reactor Vessel Closure Studs." These acceptance criteria satisfy the quality standards requirements of GDC 1, GDC 30, and §10 CFR 50.55a, and meet the requirements of GDC 31 regarding prevention of 69 fracture of the RCPB. Regulatory Positions C.1 and C.2 of Regulatory Guide 1.65 recommend the following: a. Materials for reactor vessel studs (and other fasteners) that are considered suitable are SA-540 Grades B-23 and B-24, SA-193 Grade B-7, SA-194 Grade 7, and SA- 320 Grade L-43, as presented in Section II of the ASME Code. b. The fastener material should not have an ultimate tensile strength over 1170 MPa (170 ksi) , and the fracture toughness tests and acceptance levels of paragraph 70 IV.A.3 of Appendix G to 10 CFR Part 50 must be met as detailed in paragraph 71 NB-2333 of Section III of the Code. c. Surface treatments, plating, or thread lubricants used