Document: NRC Regulatory Guide
Document ID: b143ccef-ed08-482d-bc4b-b4e012328090
Document Type: regulatory_guide
Title: Applications for Nuclear Power Plants (Rev. 1)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1523/ML15233A056.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.206
CFR Part: 
CFR Title: 

Content:
cepted by the NRC staff, as well as the level of detail that will be needed in the application, depends on design-specific technical considerations. If a DC applicant identifies portions of the design that meet one of the two conditions discussed above and intends to request the use of DAC, the applicant should provide a justification for the use of DAC that is specific to its design. The DC application itself should provide the justification, typically in Section 14.3 of the DCD where ITAAC are described. The justification should include the following: a. a description of the specific design area to be addressed by DAC; b. a discussion of the condition (rapidly changing information or the need for as-built and as-procured information) being cited and its relationship to the design topic; and c. references to all information associated with the DAC, including the following: (1) methodologies that may be described in DCD Tier 2 (e.g., Section 3.12, “ASME Code Class 1, 2, and 3 Piping Systems, Piping Components and their Associated Supports,” of the SRP for piping);); (2) a summary of information that should not be changed without prior NRC approval DG-1325, Page-66 (e.g., through inclusion in Tier 1);); (3) ITAAC presented in DCD Tier 1 and described in DCD Tier 2, Chapter 14;; (4) any relevant topical or technical reports;; and (5) a discussion of any possible system interactions that result from the use of DAC. In addition, the technical portions of the DCD that relate to the DAC should include further technical information as referenced in the justification above, including the following: a. sufficient information, through a combination of methodologies, design processes, and acceptance criteria (including ITAAC associated with design analyses and as-built verification) for the NRC staff to make a safety determination using the relevant requirements and guidance; b. related interface requirements; and c. possible system interactions. Where sufficient