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:
ermines that a DAC was not successfully met, the design process may be required to be repeated to meet the DAC, possibly requiring a change to the as-built system design. 2. Initial Test Program (ITP) Refer to SRP Section 14.3.10. 3. Design Reliability Assurance Program (D-RAP) Refer to SRP Section 14.3.10. D. Interface Requirements This section of Tier 1 specifies interface requirements that must be met by the site-specific portions of a facility that are not within the scope of the certified design. The interface requirements in the DCD define the design attributes and performance characteristics that ensure that the site-specific portion of the design is in conformance with the certified design. The site- specific portions of the design are those portions of the design that are dependent on characteristics of the site, such as the design of the ultimate heat sink. This section of Tier 1 also identifies the scope of the design to be certified by specifying the systems that are completely or partially out of scope of the certified design. Thus, interface requirements are defined for: (a) systems that are entirely outside the scope of the design, and (b) the out-of-scope portions of those systems that are only partially within the scope of the standard design. In some cases, the scope of the standard design requires that the DCD contain information that was supplied by a utility in the past. However, simply because design information may be traditionally "licensee-supplied" does not mean that it is "out-of-scope" of the standard design. In some cases, the scope of the standard design requires that additional material be included in Tier 1 and Tier 2 beyond that required from reactor designers for facilities licensed under 10 CFR Part 50. In particular, supporting information for the ITAAC; certain aspects of power generation and support equipment; and aspects of facility structures, equipment and programs should be included in the DCD Tier 2. Examples of this