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:
hese cross references may be provided along with the detailed PRA and severe accident analyses in the applicable sections of Tier 2. The cross-references should be sufficiently detailed to allow a COL applicant or licensee to consider whether a proposed design change impacts the treatment of these parameters in Tier 1. C. Additional Certified Design Material This section of Tier 1 should contain the Design Descriptions and their related ITAAC for design and construction activities that are applicable to more than one system of the design. The following items should be addressed in Tier 1, if applicable to the standard design. Applicants may propose additional items to be treated on a generic basis. The Design Descriptions should describe the scope and applicability of the additional certified design material to the appropriate systems. Alternatively, the additional material may be specified in the Design Descriptions and ITAAC for the SSCs to which they apply. 14.3-27 DRAFT Rev. 0 - April 1996 1. Design Acceptance Criteria (DAC) Additional material may be provided because, in selected areas of the design, applicants may not provide sufficient design detail in the DCD Tier 2. Applicants may not have provided complete design information in these areas because they are either areas of rapidly changing technology where applicants believe it is unwise to prematurely freeze the design, or because the information is dependent on as-built or as-procured information. Areas of rapidly changing technology may include control room and remote shutdown system design (human factors), and advanced instrumentation and controls. Areas dependent on as-built or as-procured information may include piping design and radiation shielding, ventilation, and airborne monitoring design. For these areas, applicants should provide the design related processes and associated DAC in Tier 1 that a COL applicant or licensee would follow to complete the design. The design information and appropriate