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:
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 information include the detailed analysis or testing methodology required to demonstrate that the acceptance criteria for various ITAAC have been met, amplifying information for diesel generators, form and content of 14.3-29 DRAFT Rev. 0 - April 1996 welding records, requirements for piping design stress and as-built reconciliation reports, and details of building design and construction reports. Although the top-level interface requirements are specified in Tier 1, more detailed interface requirements may be specified in Tier 2 (generally in Chapter 1), but they must be consistent with the Tier 1 information. The evolutionary designs defined the interface between the systems of the design and the site-specific systems to be physically at the walls of the major buildings of the design, such as the turbine building, reactor building, and control building. All SSCs within those buildings were considered within the scope of the design, and the SSCs outside of those buildings were considered out of scope and site-specific. Alternative definitions of interfaces may also be acceptable, such as those based on the locations of transfers of various process flows into and out of the design scope (radioactive or contaminated flows, electrical flows, heat flows, water and air flows, etc.). The requirements for interfaces for a design are contained in 10 CFR 52.47(a)(1)(vii-ix). An applicant for design certification is required to provide: 1. The interface requirements to be met by those portions of the plant for which the application does not seek certification. The interface requirements may be located in this section of Tier 1, or located with the Design Descriptions and ITAAC for applicable SSCs and cross-referenced to this section of Tier 1. Cross referencing is typically used