Journal of Occupational Health and Epidemiology

en Analyzing the Causes and Safety Barriers of Accidents in Gas Pipeline Excavation and Piping Operations Using Tripod Beta and Bowtie Methods: A Case Study of "Struck By" Accidents Occupational Health Original Article <div style="text-align: justify;">Background: Investigating and identifying the causes of accidents is important in learning to prevent similar accidents. This study aimed to investigate the causes of "Struck By" in gas pipeline excavation and piping operations using Tripod Beta and Bowtie methods. Materials and Methods: This study is a case analysis study conducted in 2023 in Iran. It was conducted on a case basis, on "Struck By" incidents. In the first phase of the study, the data related to the accidents of gas pipeline excavation and piping were collected from all over the country. "Struck By" incidents were selected as important incidents based on the severity and repetition. In the next phase, the data related to "Struck By" incidents were analyzed using the Bowtie and Tripod Beta methods. Results: This study collected 19 incidents related to excavation and piping operations of Iran gas pipelines. Out of these 19 incidents, 8 were related to the "Struck By". Analysis of accidents using the Tripod Beta method shows that basic risk factors are mainly classified into organizational factors (31.03%), work procedures (14.94 %), and tools and equipment (11.5%). The escalation factors identified by the Bowtie method were supervision, HSE systems, competence assessment, contractor management, risk management, training, work permitting, and compliance with rules and guidelines. Conclusion: "Struck By" is one of the most common accidents in gas pipeline excavation and piping operations. Based on the results obtained, to increase productivity and efficiency in practice and prevent similar accidents, there should be more focus on supervision, HSE system, competency assessment, contractor management, risk management, training, work permit system, and compliance with rules and guidelines.</div> Accident,Risk Factors,Risk, 76 98 http://johe.rums.ac.ir/browse.php?a_code=A-10-166-5&slc_lang=en&sid=1 Aida Naghshbandi aydanaghshbandi96@gmail.com 22400319475328460010179 22400319475328460010179 No M.Sc. Student in Occupational Health and Safety Engineering, Occupational Health and Safety Engineering, Faculty of Medical Sciences, Tharbiat Modares University, Tehran, Iran. Tharbiat Modares University Omran Ahmadi o.ahmadi@modares.ac.ir 22400319475328460010180 22400319475328460010180 Yes Assistant Prof., Occupational Health and Safety Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Tarbiat Modares University Hasan Asilian Mahabad asilia_h@modares.ac.ir 22400319475328460010181 22400319475328460010181 No Professor, Occupational Health and Safety Engineering, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran. Tarbiat Modares University