HUMAN RELIABILITY ANALYSIS OF PACKAGING PRODUCTION OPERATORS WITH HIERARCHICAL TASK ANALYSIS (HTA) AND FUZZY HEART METHODS

Abstract

Machine operator experienced has a significant number of production 
defects and frequent failures to meet production targets. These issues are largely 
attributed to the high level of operator involvement in the production process, 
increasing the likelihood of human error. To address this, a Human Reliability 
Analysis (HRA) was conducted to identify factors contributing to human error and 
the associated risks of production defects. The analysis employed the Hierarchical 
Task Analysis (HTA) method to break down each task. Subsequently, Human Error 
Probability (HEP) and the Human Error Assessment and Reduction Technique 
(HEART) were used to evaluate the likelihood of human error and overall human 
reliability. In the HEART method, the Assessed Proportion of Effect (APOE) value 
was determined through expert judgment. To mitigate the subjectivity in APOE 
determination, a modification using Fuzzy Linguistic Expression was applied.