Document: NUREG-0800
Document ID: 6cdd237d-c5b3-4a09-8753-54cfe1fea503
Document Type: srp
Title: REACTOR VESSEL MATERIALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0631/ML063190007.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.3.1
CFR Part: 
CFR Title: 

Content:
r material should not have an ultimate tensile strength over 1170 MPa (170 ksi), and the fracture toughness tests and acceptance levels of NB-2333 of Section III of the Code must be met as required by paragraph IV.A of Appendix G to 10 CFR Part 50. C. Surface treatments, plating, or thread lubricants used should be shown to be compatible with the materials, and stable at operating temperatures. D. Nondestructive examination should be performed according to Section III of the Code, subsubarticle NB-2580 including additional recommendations given in Regulatory Position C.2 of RG 1.65. Technical Rationale The technical rationale for application of these acceptance criteria to the areas of review addressed by this SRP section is discussed in the following paragraphs: 1. General Design Criteria (GDC) 1 and 30 and 10 CFR 50.55a, establish quality assurance requirements for the design, fabrication, erection, and testing of structures, systems and components (SSCs) important to safety. GDC 1 and 10 CFR 50.55a establish that the quality assurance standards to be applied to SSCs shall be commensurate with the importance of the safety functions to be performed and will be established and implemented through the development of a quality assurance program. 10 CFR 50.55a also incorporates by reference applicable editions and addenda of the ASME Boiler and Pressure Vessel Code. GDC 30 establishes that RCPB components shall meet the highest quality standards practical. The safety functions of the reactor vessel are to provide 1) a support structure for the internal reactor components, 2) reactor coolant confinement as part of the reactor coolant flow path, and 3) a containment barrier to the release of fission products as part of the RCPB. RGs 1.31, 1.34, 1.43, 1.44, 1.50, and 1.65 provide regulatory positions applicable to compliance with GDC 1 and 30. Compliance with GDC 1 and 30 and 10 CFR 50.55a provides assurance that the reactor vessel will be designed, fabricated, erected,