Document: NUREG-0800
Document ID: 895e917e-6441-4955-bd23-ef8c1e10c92a
Document Type: srp
Title: INITIAL TEST PROGRAM AND D-RAP (Tier 1)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070670.pdf
Revision Date: 2023-06
Chapter: 14
Section ID: 14.3.10
CFR Part: 
CFR Title: 

Content:
ting post-fuel load, it is not appropriate to define associated ITAAC entries as Part 52 specifies that the ITAAC will be completed prior to fuel load. Design Reliability Assurance Program - The above acceptance criteria can be met for the D-RAP by the following: Tier 1 should contain a high level commitment to a D-RAP for use in the detailed design and equipment specification of risk-significant SSCs prior to fuel load, and as described in Appendix C to SRP Section 14.3. An ITAAC should be provided to verify the commitments in Tier 1. Tier 2 Section 17.4 contains a more detailed description of the D-RAP. The D-RAP is described in Tier 1 because of the essential role of a reliability assurance program in assuring that the final as-built facility performs satisfactorily in service. The following items were found to be acceptable for the evolutionary standard designs, but are not meant to constitute the only acceptable discussion appropriate in Tier 1. Items should be added or deleted as appropriate for a specific design. Particular attention should be paid to additional commitments that should be made on a design-specific basis, particularly for new or unusual aspects of standard designs. The Design Description in Tier 1 should describe the scope, purpose, objectives and essential elements of the D-RAP. It should provide a commitment for a process to evaluate and prioritize SSCs, and list the SSCs based on their risk-significance. It should include a commitment that the process used to determine dominant failure modes considered industry experience, analytical models, and applicable requirements. Also, for those SSCs designated as risk-significant, the key assumptions and risk insights should consider operations, maintenance, and monitoring activities. The scope of the D-RAP program should include risk-significant SSCs as determined by probabilistic, deterministic, or other methods used for design certification to identify and prioritize risk-significant SSCs. The