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Exploring individual factors influencing human reliability among control room operators: a qualitative study
Mehran Ghalenoei1,2, Seyed Bagher Mortazavi1, Adel Mazloumi3
1Faculty of Medical Sciences, Tarbiat Modares University, Iran.
Summary
This study identifies key operator factors for human reliability in power plants. Professional competence and quick decision-making are crucial for enhancing operator reliability and reducing errors.
Area of Science:
- Human Factors Engineering
- Industrial Psychology
- Power Plant Operations
Background:
- Current human reliability assessment relies on performance shaping factors and expert judgment.
- Identifying individual factors influencing human error is critical for accurate reliability assessments.
Purpose of the Study:
- To identify and categorize key factors affecting operator reliability in combined cycle power plant control rooms.
- To inform improvements in human reliability assessment methods within industrial settings.
Main Methods:
- Qualitative content analysis of semi-structured interviews.
- Purposive sampling of 32 control room operators (module controllers, head operators, managers).
Main Results:
- Five key categories influencing operator reliability were identified: mental condition, consciousness at work, professional competence, communication skills, and quick reactions/decision-making.
- Professional competence and speed of reactions emerged as particularly significant factors.
Conclusions:
- Operator reliability in combined cycle power plants is significantly influenced by factors beyond traditional assessments.
- Recommendations include prioritizing professional competence and rapid decision-making capabilities in human reliability assessments for power plant operators.
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