Document: NUREG-0800
Document ID: 4a295d6b-937a-429e-8fe4-1470b992d859
Document Type: srp
Title: Rev. 0 – November 2009
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0929/ML092950353.pdf
Revision Date: 2023-06
Chapter: 18
Section ID: 18
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CFR Title: 

Content:
plete D3 analysis, which provides time available and time required, and the supporting analyses, is submitted for NRC review. This D3 analysis will be submitted as part of the supporting justification for a design certification, design certification amendment, combined license application, or license amendment. When the NRC reviewers have high confidence that the manual operator actions will be accomplished correctly, reliably, and within the time available, the NRC staff will make a safety determination as part of the Safety Evaluation Report (SER) on the associated licensing action. Acceptable implementation shall be verified through completion of specified Inspections, Tests, Analyses, and Acceptance Criteria (ITAAC) or License Conditions. 2.B. Review Criteria The responsible reviewers evaluate vendor/applicant’s submittals for compliance with the following criteria: • The preliminary validation is conducted as an independent confirmation of the Phase 1 Analysis that compared time available and estimated time required. • The preliminary validation is conducted by a multi-disciplinary team with the knowledge and skills necessary to verify the rigor and assumptions of the analysis and validate the analysis conclusions regarding the ability of operators to perform the actions reliably within the time available. • The preliminary validation uses two or more methods to validate the analysis. 18-A-8 Rev. 0 – November 2009 • The preliminary validation results support the conclusion that the time required, including margin, to perform individual steps and the overall documented sequence of manual operator actions is reasonable, realistic, repeatable, and bounded by the Phase 1 Analysis documentation.5 Note: As the difference between time available and time required for operator action decreases, there is increasing potential that uncertainties in the estimate of time required will invalidate a conclusion that operators can perform the actions reliably within