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
CFR Part: 
CFR Title: 

Content:
e identification of potential errors, error detection methods, and error recovery paths in event trees may be used to provide estimates of how much margin should be added to the operator response time estimates. For complex situations and for actions with limited margin, such as less than 30 minutes between time available and time required, a more focused staff review will be performed. 1.B. Review Criteria The responsible reviewers evaluate licensee/applicant’s submittals for compliance with the following criteria: • An analysis establishes the time available. The basis for the time available is documented. • The analysis of the time required is based on a documented sequence of operator actions. The basis of the documented sequence of operator actions can be task analysis, vendor-provided generic technical guidelines for emergency operating procedure development, or plant-specific EOPs, depending on the maturity of the design. • Techniques to minimize bias are used when estimates of time required are derived using methods that are dependent on expert judgment. Uncertainties in the analysis of time required are identified and assessed. • The sequence of actions uses only alarms, controls, displays and equipment that would be available and functional during the subject event(s). The event and 4 As used here, credible operator errors are any errors of omission or commission that are plausible considering applicable operating experience and a human reliability analysis for the task 18.0-21 Revision 3 – December 2016 the regulatory guidance for analyzing the event typically define the alarms, controls, displays and equipment that remain functional. • The estimated time available for operators to complete the credited action is sufficient to allow successful use of all applicable procedure(s). This could involve implementation of a single procedure, multiple procedures in parallel, or procedures in sequence.5 Where applicable the review should address the