Document: NUREG-0800
Document ID: 48fcca4d-4efe-4600-b4ca-9911efb87843
Document Type: srp
Title: and 5.2.1.2.
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070446.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.2.1.1
CFR Part: 
CFR Title: 

Content:
during normal operation or anticipated operational occurrences. The steam generator is a part of the reactor coolant pressure boundary and provides for emergency core cooling under certain transients. Requiring margin between operational and design conditions ensures that the integrity of the reactor coolant pressure boundary is maintained and that the steam generator can fulfill its emergency core cooling safety functions during the most severe transients expected. 4. GDC 31 requires that the reactor coolant pressure boundary be designed with sufficient margin to preclude brittle fracture during expected operational, maintenance, testing, and accident conditions. The steam generator is a part of the reactor coolant pressure boundary and provides one of the means of emergency core cooling. Requiring design margins to brittle fracture limits ensures that the integrity of the reactor coolant pressure boundary is maintained and that the steam generator can fulfill its emergency core cooling safety functions during the most severe transients expected. 5. 10 CFR 50 Appendix B provides quality assurance requirements for the design, construction, and operation of safety related structures, systems and components of a nuclear plant. Criterion XIII specifically requires controls for the cleaning and preservation of material and equipment in accordance with work and inspection instructions to prevent damage or deterioration. The steam generator is a part of the reactor coolant pressure boundary and provides one of the means of emergency core cooling. Regulatory Guide 1.37 describes acceptable standards for cleaning and cleanliness control to prevent material damage or deterioration. By meeting criterion XIII of 10 CFR 50 Appendix B and the positions of Regulatory Guide 1.37, assurance is provided that the steam generator materials are protected from damage due to corrosion or contamination, thus providing a high degree of certainty that assigned steam generator safety