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:
ions applicable to compliance with GDCs 1 and 30. Compliance with GDCs 1 and 30, 10 CFR 50.55a, and the positions of the Regulatory Guides, provides assurance that the reactor vessel will be designed, fabricated, erected, and tested to established and proven standards thereby reducing the likelihood of reactor vessel failure. 2. GDC 4 establishes that SSCs important to safety be designed to accommodate the effects of and to be compatible with the environmental conditions associated with normal operations, maintenance, testing, and postulated accidents, including LOCAs. The reactor vessel provides support for internal reactor components, a fission product barrier, and confinement of the reactor coolant. Application of GDC 4 to the reactor vessel materials provides assurance that degradation and/or failure of the reactor vessel resulting from environmental conditions that could cause substantial reduction in capability to contain reactor coolant inventory, reduction in capability to confine fission products, or interference with core cooling are not likely to occur. 3. GDC 14 requires that the RCPB be designed, fabricated, erected, and tested so as to have an extremely low probability of abnormal leakage, of rapidly propagating failure, and of gross rupture. The reactor vessel is an integral part of the RCPB. Regulatory Guide 1.31 provides regulatory positions regarding the control of ferrite content in stainless steel welds and that are relevant to compliance with GDC 14. Application of GDC 14 and Regulatory Guide 1.31 to the reactor vessel materials assures that they are selected, fabricated, installed, and tested to provide a low probability of significant degradation or gross failure of the reactor vessel that could cause substantial reduction in capability to contain reactor coolant inventory, reduction in capability to confine fission products, or interference with core cooling. 4. GDC 31 and 10 CFR 50.55a establish fracture toughness requirements and the