Table 2 Probability of human error according to expert viewpoints in the framework of the HFACS method
From: Human reliability analysis in maintenance team of power transmission system protection
Error Level | Error Category | Error Subcategory | Viewpoint of personnel |
|---|---|---|---|
Unsafe acts | errors | Skill-based error | occasional |
Decision error | occasional | ||
Perceptual error | Â | ||
violations | Routine violation | occasional | |
Exceptional violation | very low | ||
Preconditions for unsafe acts | Operator Conditions | Adverse mental state | occasional |
Adverse physiological state | occasional | ||
Physical/mental limitations | Â | ||
Individual factors | Communication coordination and planning | occasional | |
Fitness for duty | Â | ||
Environmental factors | Physical environment | occasional | |
Technological environment | Â | ||
Unsafe supervision | Inadequate supervision | Â | occasional |
Planned inappropriate operations | Â | occasional | |
Failed to correct a known problem | Â | occasional | |
Supervisory violation | Â | very low | |
Organizational influences | Resource management | human resources | occasional |
Funds | probable | ||
Equipment resources/facilities | occasional | ||
Organizational climate | Structure | occasional | |
Culture | occasional | ||
Politics | occasional | ||
Organizational process | operation | occasional | |
methods | occasional |