Document: NUREG-0800
Document ID: e6a79bdb-930d-4b57-91b9-39db4d8a76f1
Document Type: srp
Title: ENGINEERED SAFETY FEATURES MATERIALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0631/ML063190010.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.1.1
CFR Part: 
CFR Title: 

Content:
lated within the containment after design-basis accidents (DBA) must be selected (a) to maintain the integrity of the RCPB, by preventing stress corrosion cracking of safety-related components, (b) to insure that adequate solution mixing of ESF fluids will occur, and (c) to prevent evolution of excessive amounts of hydrogen within the containment in the unlikely event of a design-basis accident. The time-dependent analysis of the pH of the fluids, including the source and quantity of all soluble acids and bases in the containment after a DBA, is reviewed. The controls on contaminants, such as chlorides, lead, zinc, sulfur, or mercury, in the ESF fluids are reviewed. 3. Component and Systems Cleaning. The review includes the requirements for the cleaning (in-shop and onsite) of materials and components, cleanliness control, and preoperational system cleaning and the procedures for layup of nuclear plant fluid systems. Requirements for the maintenance of system cleanliness of fluid systems and associated components during the operational phase of the nuclear power plant are also reviewed. 6.1.1-3 Revision 2 - March 2007 4. Thermal Insulation. The review includes the composition of the nonmetallic insulation and the control of leachable contaminants from the insulation. Nonmetallic thermal insulation that will be exposed to ESF fluids in DBA environments is evaluated as a potential source of contaminants, such as chlorides, lead, zinc, sulfur, and mercury. The review also includes the use of inhibitors to reduce the probability of stress corrosion cracking of stainless steel components. 5. COL Action Items and Certification Requirements and Restrictions. For a DC application, the review will also address COL action items and requirements and restrictions (e.g., interface requirements and site parameters). For a COL application referencing a DC, a COL applicant must address COL action items (referred to as COL license information in certain DCs) included in the