ANALISIS HUMAN RELIABILITY PADA OPERATOR BAGIAN MAINTENANCE MESIN 2 DENGAN METODE HUMAN ERROR ASSESSMENT AND REDUCTION TECHNIQUE DI PT. PJB UP PAITON TAHUN 2013

Operators have considerable contribution in the operation of the system through its role in the completion of their work. Therefore it is important to know the operator’s reliability (human reliability). The levels of human reliability is determined by calculating the potential in making mistakes, known as human error. Human error is influenced by the inadequate system design ,the working bad situation, the high complexity of the work, the characteristics of human behavior, the mental and physical fatigue, the working environment and organizational policies. The main objective of this study is to analyze the reliability of the human operators to control the occurrence of human error. This study was an observational with cross-sectional approach. The study was conducted on 13 operators maintenance machine 2 in coal handling system PT. PJB UP Paiton. Data were collected by means of interview and observation. Data were obtained analyzed using Hierarchical Task Analysis (HTA) and Human Error Assessment and Reduction Technique (HEART). The results showed that most of the operators did not wear Personal Protective Equipment (PPE), possible error were widely found in preventive maintenance belt conveyor 1 and belt conveyor 2, the high score (HEP = 0.4276) of human unreliability was found in operators working instruction in wire rope unit, as whole the system reliability was still low, and the majority (80%) of operators were still unreliable in doing their job. To control the occurrence of human error, companies is suggested to provide a training on hazard identification and self-management, improve work instruction, and increase the application of work instruction as well as strictly supervise the wearing Personal Protective Equipment (PPE) during works.   Keywords human error, human reliability, HEART