Document: NUREG-0800
Document ID: 51b93b24-7bff-4144-949f-36812854b7aa
Document Type: srp
Title: HUMAN FACTORS ENGINEERING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1612/ML16125A114.pdf
Revision Date: 2023-06
Chapter: 18
Section ID: 18.0
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Content:
lts should provide high confidence that the performance time criteria will be met in the Phase 3 ISV. Unacceptable ISV results will require modification of the design or operating strategy late in the design and licensing process. 5 The Phase 1 analysis may be conducted using a task sequence based on task analysis, vendor-provided generic technical guidelines for emergency operating procedure development, or plant-specific EOPs, depending on the maturity of the design. Accordingly, it is recognized that it will not be possible in all circumstances to directly assess time available relative to this criterion during the Phase 1 analysis. 18.0-22 Revision 3 – December 2016 2.A. Method The preliminary validation should provide independent confirmation of the validity of the “time required” estimate derived in the Phase 1 analysis through the use of methods such as the following: • Tabletop analysis • Timeline analysis (such as the method shown in Appendix A of NUREG-1852) • Walkthrough/talkthrough analysis • Software models of human behavior, such as task network modeling • Use of control/display mockups • Man-in-the-loop prototype testing • Pilot testing • Real-time validation on a suitable6 part-task simulator Note: The preceding list is not all-inclusive – other validation methods may be used if sufficient technical justification is provided. As the difference between time available, and time required for operator action decreases, the importance of reducing uncertainty and minimizing potential bias in the estimates increases. Accordingly, the vendor/applicant should use several diverse methods to estimate operator response times to maximize the cross-validation value of the methods (i.e., minimize the potential for bias and reduce sources of uncertainty in the estimates of operator response times). For example, when the design has advanced to the point where a part-task simulator is available, the vendor/applicant should use it to