Document: NUREG-0800
Document ID: 743c65f7-fe56-43cc-8658-f69bb64672dc
Document Type: srp
Title: Final Revision 0 – April 2014
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1311/ML13115A156.pdf
Revision Date: 2023-06
Chapter: 18
Section ID: 18
CFR Part: 
CFR Title: 

Content:
ity sufficient for the conduct of the specific validation. 18-A-7 Final Revision 0 – April 2014 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/talkthrough. 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 undocumented assumptions and analytical methods used in the analysis are identified and documented during the analysis. However, it is recognized that communication between the groups will be necessary, especially after the preliminary validation is complete. The processes of validation and design are iterative and feedback from the preliminary validation should be used to refine the design, the procedures, and the training provided to the operators. The preliminary validation should be rigorous and conducted by operators, system technical experts, and human factors experts. These personnel should verify that the analysis is logical for its purpose, contains a sufficient level of detail, and that the analyzed action sequence presents no physical or spatial difficulty for performance. The language and the level of information presented in the documented sequence of manual operator actions should be compatible with the minimum number, qualifications, training, and experience of the operating staff. Operators and system technical experts should ensure that the documented sequence of manual operator actions, independent of the time