Human error risk prioritization in crane operations based on CPT and ICWGT

Area of Science:

• Occupational Safety and Health
• Risk Management
• Human Factors Engineering

Background:

• Human error is a critical factor in crane safety incidents.
• Existing methods for human error risk prioritization may lack accuracy and rationality.
• Effective risk management is essential for preventing accidents in crane operations.

Purpose of the Study:

• To develop a novel risk prioritization model for human errors in crane operations.
• To improve the accuracy and rationality of human error risk assessment.
• To enhance overall crane safety management.

Main Methods:

• The proposed model integrates Cumulative Prospect Theory (CPT) and an Improved Combination Weighting Model of Game Theory (ICWGT).
• ICWGT combines subjective and objective methods for risk-factor weighting, using trapezoidal fuzzy numbers for expert uncertainty.
• CPT is employed to assess expert risk attitudes and determine overall prospect values for risk ranking.

Main Results:

• A case study on overhead crane operations demonstrated the model's feasibility.
• Sensitivity and comparison analyses validated the effectiveness of the proposed prioritization approach.
• The model successfully ranked human error risks based on calculated prospect values.

Conclusions:

• The developed model offers a more accurate and rational approach to prioritizing human error risks in crane operations.
• This risk ranking mechanism is beneficial for improving crane safety and risk management strategies.
• The integration of CPT and ICWGT provides a robust framework for human error assessment in complex industrial settings.