Document: NUREG-0800
Document ID: 4a46b35d-2e81-4517-9716-154b19f57049
Document Type: srp
Title: REACTOR COOLANT PRESSURE BOUNDARY MATERIALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0631/ML063190006.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.2.3
CFR Part: 
CFR Title: 

Content:
e compatible with the environmental conditions associated with normal operation, maintenance, testing, and postulated accidents, as required by GDC 4. 5.2.3-21 Revision 3 - March 2007 The materials of construction for the RCPB are compatible with the thermal insulation used in these areas and are in conformance with the recommendations of Regulatory Guide 1.36, “Nonmetallic Thermal Insulation for Austenitic Stainless Steels.” Conformance with the above recommendations satisfies the requirements of GDC 14 and GDC 31 that the probability of rapidly propagating failure of RCPB materials be extremely low, and the probability of rapidly propagating fracture of RCPB materials be minimized. The ferritic steel tubular products and the tubular products fabricated from austenitic stainless steel have been found to be acceptable by nondestructive examinations in accordance with the provisions of the ASME Code, Section III. Compliance with these Code requirements satisfies the quality standards requirements of GDC 1, GDC 30 and 10 CFR 50.55a for these materials. The fracture toughness tests required by the ASME Code, augmented by Appendix G to 10 CFR Part 50, provide reasonable assurance that adequate safety margins against nonductile behavior or rapidly propagating fracture can be established for all pressure retaining components of the reactor coolant pressure boundary. The use of Appendix G of the ASME Code, Section III, and the results of fracture toughness tests performed in accordance with the Code and NRC regulations in establishing safe operating procedures, provide adequate safety margins during operating, testing, maintenance, and postulated accident conditions. Compliance with these Code provisions and NRC regulations satisfies the requirements of GDC 14 and GDC 31 that the probability of rapidly propagating failure of RCPB materials be extremely low, and the probability of rapidly propagating fracture of RCPB materials be minimized. The controls imposed on