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Showing 3 results for Kalatpour
The Application of Lean Production in Reducing Human Error and Improving Response in Emergencies: A case Study in a Petrochemical Industry
Marzieh Abbassinia, Omid Kalatpour, Majid Motamedzadeh, Alireza Soltanian, Iraj Mohammadfam,
Volume 8, Issue 2 (Iranian Journal of Ergonomics 2020)
Abstract
Background and Aim: Petrochemical industry is one of the most accident-prone industries, and most accidents in this industry are related to human factors. The principles of Lean production are one of the approaches used to improve the production situation. Various studies have shown that implementing Lean production improves the safety and ergonomics. In this study, the principles of Lean production were used to reduce human error and improve response in emergencies.
Methods:  The basic CREAM method was used to evaluate human errors. In order to select Lean production tools appropriate to the emergency response tasks, the opinions of the 20-member panel of specialists and experts, including industry managers, HSE officials, and university professors, were used. For examining the impact of Lean production principles on reducing human error in emergencies, 6 months after the implementation of Lean production interventions, human error was re-examined. Evaluation of human errors after Lean production interventions was also performed by basic CREAM method.
Results: The results of the evaluation of human errors before and after the implementation of Lean production interventions showed that the level of control mode of the three sub-tasks improved from the tactical control mode to the strategic control mode. The most probable human error was in evacuate sub-task.
Conclusion: The results of this study showed that the implementation of those interventions that in addition to improving the level of safety, can improve organizational productivity, is more accepted by industry management.

Identification and Assessment of Human Error during the Process of Operating Various Types of Fire Apparatus
Tahmineh Moradi Tamadon, Fakhradin Ghasemi, Iraj Mohammadfam, Omid Kalatpour,
Volume 8, Issue 4 (Iranian Journal of Ergonomics 2021)
Abstract
Background and Objectives: Firefighting is a difficult and dangerous job. This job requires decision-making and speed in action in critical situations. Such conditions increase the probability of human error in the firefighting activities. Setting up fire operators as the first step of emergency response is associated with high criticality. The purpose of this study is identification and assessment of the risk of human error while setting up and operating fire operators.
Methods: This descriptive cross-sectional study was performed in 2019. Tasks related to the operation of industrial firefighting operators were studied and analyzed by Hierarchical Task Analysis. Then, human errors in the operation of fire operators were identified and analyzed using the systematic human error reduction and prediction approach (SHERPA). Finally, appropriate prevention solutions were proposed to reduce the risk of errors.
Results: A total of 480 errors were detected for 130 tasks as 49.58% of them were action errors, 39.17% check type, 10.42% communication and 0.83% were selective errors and no retried error was observed. According to the results of risk assessment, 8.33% of the errors were unacceptable, 24.17% were undesirable, and 48.33% were acceptable risks but needed to be revised and 19.17% were acceptable without the need for revision.
Conclusion: The process of operating fire operators can be associated with human errors and prevent successful firefighting operations. Therefore, these errors should be identified and controlled using appropriate methods.

Develop and Validity Operator Room Risk-taking Questionnaire with Event-related Potentials
Omid Kalatpour, Rashid Heidarimoghadam, Iraj Mohammadfam, Maryam Farhadian, Mohammad Reza Tavakkol,
Volume 10, Issue 2 (Iranian Journal of Ergonomics 2022)
Abstract
Objectives: Risk-taking is a personality trait which plays a part in the occurrence of work-related accidents. For this reason, people who are highly risk-taking whose decision might cause accident should not be employed in critical situations. The purpose of this survey was to design and verify the validity of the risk tolerance questionnaire, suitable for control room operators, through examining the event related potential (ERP).
Methods: At first, the questions were selected from reliable scientific resources based on the conceptual model. The questions of the initial questionnaire were selected based on face validity, and then the questionnaire was filled out by 178 control room operators. At the next step, the best questions of the questionnaire were extracted using exploratory factor analysis (EFA). In terms of reliability, 42 individuals of the study group refilled in the questionnaire again after three months as a test-retest. The ERPs were assessed using electroencephalography along with Balloon Analogue Risk Task (BART). The correlation coefficient calculated between the ERPs, and risky behaviors, and questionnaire scores.
Results: One factor and 13 questions were identified as the best questions regarding EFA. Cronbach's alpha was 0.91. The Spearman correlation coefficient was calculated between the questionnaire score and risk-taking behavior as well as between the questionnaire score and P300, which was 0.38 (P = 0.01, η2 = 0.70) and 0.63 (P = 0.01, η2 = 0.99), respectively.
Conclusion: The Operator control Room Risk-Taking (ORTQ) questionnaire consists of 13 questions which can be used as an appropriate tool to assess the risk-taking trait in control room operators and also for research purposes. This questionnaire has got three personality dimensions including risk-taking nature, impulsivity and venturesomeness.

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