Document: NUREG-0800
Document ID: f03d2c71-27a1-41fd-9362-1e62c6142e13
Document Type: srp
Title: Containment Systems and Severe Accidents (Tier 1)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070653.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.3.11
CFR Part: 
CFR Title: 

Content:
ected aspects of the standard design. These are provided in Appendix D to this SRP. The standard ITAAC should be used to ensure consistent and comprehensive treatment of these issues in the applicable systems of Tier 1. A three-column format for ITAAC is acceptable, as discussed below. a. Column 1 - Design Commitments This column contains the text for the specific design commitment that is extracted from the design descriptions discussed above. Any differences in text should be minimized, unless intentional. Differences in text are generally intended to better conform the commitments in the design description with the ITAAC format. 14.3-23 DRAFT Rev. 0 - April 1996 b. Column 2 - Inspections, Tests, and Analyses This column contains the specific method to be used by the licensee to demonstrate that the design commitment in Column 1 has been met. The method is either by inspection, test, or analysis or some combination of these. Tier 2 contains detailed supporting information for various inspections, tests, and analyses that can, and should be, used to verify the Tier 1 design information and satisfy the acceptance criteria. If questions on interpretation should arise, the material in Tier 2 provides the background material and context for Tier 1 information. Tier 2 contains information reviewed by the staff which is the basis for the staff's safety determination for the design. Therefore, the information in Tier 2 describes an acceptable means, but not the only means, of satisfying an ITAAC. Inspections are defined in the Introduction, and include visual and physical observations, walkdowns or record reviews. The inspections required for the "Basic Configuration Walkdown" ITAAC invoke the general provisions contained in the Introduction for as-built structures and systems. Tests are defined in the Introduction, and mean the actuation, operation, or establishment of specified conditions to evaluate the performance or integrity of the as-built SSCs. This includes