Stop using training as a measure to prevent human failure! What you need is this tool.

Safety critical task analysis : a HAZOP method based on human factors, which can be used in coordination with LOPA to analyze the possibility of human failure, and provide corresponding measures from the perspective of human-machine interface.

The main steps consists of: 1. Identify major hazards 2. Identify the critical tasks 3. Understand the tasks 4. Analyze the tasks 5. Identify major factors of human failures and performance impact factors 6. Identify controls for human failures 7. Effectiveness of the review process