Document: NUREG-0800
Document ID: eedf1a7c-578e-463a-9608-b06af6312cf1
Document Type: srp
Title: HUMAN FACTORS ENGINEERING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1310/ML13108A095.pdf
Revision Date: 2023-06
Chapter: 18
Section ID: 18.0
CFR Part: 
CFR Title: 

Content:
the staff must issue a safety evaluation applicable to the analysis. 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 • 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 6 A suitable part-task simulator is one of demonstrated scope and fidelity sufficient for the conduct of the specific validation. 18.0-21 Draft Revision 3 – July 2015 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 cross-validate previous time estimates derived from other activities, such as expert elicitation, tabletop analysis, or walkthrough/talk through. It is expected that the vendor/applicant will estimate operator response time using as realistic an environment as is available at the time of the preliminary validation. The group of individuals who conduct the preliminary validation of the analysis should not include individuals who conducted the analysis. Independence between these groups will help to ensure that any