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
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o phases. Staffing analyses are to evaluate minimum staffing, so typically these analyses should include Phase 1 and 2 events and actions in the selected scenarios. For the second or transition phase, some plants may involve off-site or recalled personnel (NEI 12-06). If a plant’s mitigation strategy specifies recalled/offsite personnel for selected events, then those events do not need to be included in the staffing analyses for minimum staffing. b. The applicant should consider the following types of personnel tasks: • Important Human Actions – The sample should include all important HAs, as determined in NUREG-0711, Section 7. • Manual Initiation of Protective Actions – The sample should include manual system-level actuation of critical safety functions. • Automatic System Monitoring – The sample should include situations in which humans must monitor a risk-important automatic system. • Operating Event Report - Identified Problematic Tasks – The sample should include high-workload personnel tasks identified as problematic during the applicant's review of operating experience. • Range of Knowledge-Based Tasks – The sample should include tasks that are not well defined by detailed procedures (see NUREG-0711 for additional information). • Range of Human Cognitive Activities – The sample should include the range of cognitive activities that personnel perform, including: − detecting and monitoring (e.g., of critical safety-function threats) − situation assessment (e.g., interpreting alarms and displays to diagnose faults in plant processes and in automated control and safety systems) − planning responses (e.g., evaluating alternatives to recover from plant failures) 18.0-32 Draft Revision 3 – July 2015 − response implementation (e.g., in-the-loop control of plant systems, assuming manual control from automatic control systems, and carrying out complicated control actions) − obtaining feedback (e.g., feedback of the success of