Document: NUREG-0800
Document ID: 9099ab75-0fb9-4fa1-a9f0-ccd7fd3b6c5a
Document Type: srp
Title: FRACTURE PREVENTION OF CONTAINMENT PRESSURE BOUNDARY
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340707.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.7
CFR Part: 
CFR Title: 

Content:
8.1, which addresses concrete containments and SRP Section 3.8.2, which addresses steel containments. II. ACCEPTANCE CRITERIA The I4TEB review applies acceptance criteria based on meeting the relevant requirements of the following Commission regulations: 1. General.Design Criterion 1, as It relates to the quality standards for design and fabrication 2. General Design Criterion 16, as it relates to the prevention of the release of radioactivity to the environment 3. General Design Criterion 51, as it relates to the reactor containment pressure boundary being designed with sufficient margin to assure that under operating, maintenance, testing, and postulated accident conditions (1) its ferriti c materials behave in a nonbrittle manner and (2) the probability of rapidly propagating fracture is minimized. To meet the requirements of GOC 1, 16 and 51, ferritic containment pressure boundary materials should meet the fracture toughness criteria for Class 2 components identified in the Summer 1977 Addenda of Section III of the ASME Code. These criteria were selected to provide for a uniform review, consis- tent with the safety function of the containment pressure boundary within the context of Regulatory Guide 1.26, "Quality Group Classifications and Standards for Water- Steam-, and Radioactive-Waste-Containing Components of Nuclear Power Plants." The consistency is developed in that the containment system is addressed in the licensing review process as an engineered safety feature, as is, for example, the emergency. core cooling system. Regulatory Guide 1.26 is silent with respect to the containment pressure boundary, but does assign Group B Quality Standard to the emergency core cooling system. Regulatory Guide 1.26 assigns correspondence of Group B Quality Standard to ASME Code Section III Class 2. Mandatory fracture toughness testing of ASME Code Section III Class 2 materials was first identified in the Summer 1977 Addenda Code Class 2 rules. As a result, cases exist