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 | |||
| 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 | |||
| Individual factors | Communication coordination and planning | occasional | |
| Fitness for duty | |||
| Environmental factors | Physical environment | occasional | |
| Technological environment | |||
| Unsafe supervision | Inadequate supervision | occasional | |
| Planned inappropriate operations | occasional | ||
| Failed to correct a known problem | occasional | ||
| Supervisory violation | 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 |