Document: NUREG-0800
Document ID: 91fee075-c567-438d-bf9f-47be3177b457
Document Type: srp
Title: ENGINEERED SAFETY FEATURES MATERIALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070453.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.1.1
CFR Part: 
CFR Title: 

Content:
nd associated 104 auxiliary systems have an extremely low probability of leakage, of rapidly propagating failures and of gross rupture. The controls placed on concentrations of leachable impurities in non-metallic thermal insulation used on components of the Engineered Safety Features are in accordance with the requirementspositions of Regulatory Guide 1.36, "Nonmetallic Thermal Insulation for Austenitic Stainless Steels." Compliance with the requirementspositions of Regulatory Guide 1.36 form a basis for meeting the requirements of GDC 1, 14 and 31.105 The protective coating systems have been qualified by tests acceptable to the staff. This qualification provides reasonable assurance that the coating systems will not degrade the operation of the ESF by delaminating, flaking or peeling. The coatings applied are in accordance with Regulatory Guide 1.54, "Quality Assurance Requirements for Protective Coatings Applied to Water-Cooled Nuclear Power Plants." Conformance with this Regulatory Guide provides a basis for meeting the requirements of Appendix B to 10 CFR Part 50, "Quality Assurance Criteria for Nuclear Power Plants and Fuel Reprocessing Plants."106 3. The requirements of GDC 4, 35, and 41 and Appendix B, 10 CFR Part 50 have been met with respect to compatibility of ESF components with environmental conditions associated with normal operation, maintenance, testing and postulated accidents, including loss-of-coolant accidents, since the controls on the pH and chemistry of the reactor containment sprays and the emergency core cooling water following a loss-of-coolant or design basis accident, are adequate to reduce the probability of stress corrosion cracking of the austenitic stainless steel components and welds of the engineered safety features systems in containment throughout the duration of the postulated accident to completion of cleanup.107 6.1.1-17 DRAFT Rev. 2 - April 1996 Also, the control of the pH of the sprays and cooling water, in conjunction with