• 제목/요약/키워드: bow-tie approach

검색결과 4건 처리시간 0.017초

Bow-Tie 기반 가설식 곤돌라 사고 예방 대책에 관한 연구 (A Study on Accident Prevention Measures for Temporary Gondolas through Bow-Tie Approach)

  • 공준성;기정훈;박종일
    • 한국안전학회지
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    • 제35권4호
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    • pp.48-55
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    • 2020
  • The use of temporary Gondola has been steadily increasing. The temporary Gondola is required to get a safety certification review during installation and to be inspected during use within every six months. Most of them, however, are dismantled before six months, and inappropriate activities are conducted frequently for shorter working hours and convenience of work. In this study, the characteristics of the temporary Gondola and the domestic accident cases that occurred over the past 10 years(2008-2017) are analyzed for the type of accident, the state of the accident by year, and the actions of the workers in the event of an accident. Also comprehensive accident reduction measures were proposed by identifying the fundamental causes of temporary Gondola accidents, problems of existing preventive measures, and system defects by utilizing Bow-Tie techniques.

모델링 기반 사고 대응 절차 수립 방법에 관한 연구 (A Study on Development of Functional Recommendation for Planning Emergency Response Using Model-Based Approach)

  • 설지우;채충근;이경진;문명환;고재욱
    • Korean Chemical Engineering Research
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    • 제55권2호
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    • pp.195-200
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    • 2017
  • 사고 대응 가이드라인은 사고 발생 시 그 영향을 줄이기 위한 수단으로 중요한 역할을 한다. 유용한 사고 대응 가이드라인의 개발을 위하여 개발 절차에 공학적 방법론의 적용이 필요하다. 본 논문에서는 기존에 존재하는 사고 대응 가이드라인 작성 방법론에 Bow-Tie 기법, 사고 전개 모델, 위험 대응 의사결정 등 위험 관리 기법을 적용하였다. 이러한 방법으로 일반화된 사고 대응 가이드라인 작성 절차를 제안하였으며, 직접적으로 활용할 수 있도록 Sheet를 개발하고, 특정 Case를 적용하여 Sample Guide를 작성하였다.

Risk Assessment for Marine Pilot Occupational Accidents using Fault Tree and Event Tree Analysis

  • Camliyurt, Gokhan;Choi, Sea-Am;Kim, So-Ra;Guzel, Ahmet Turgut;Park, Young-Soo
    • 한국항해항만학회지
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    • 제46권5호
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    • pp.400-408
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    • 2022
  • Maritime transportation is one of the most complicated and hazardous business fileds. Maritime accidents still occur despite several precautions since maritime is exposed to natural factors more than any other industries. In this harsh environment as a part of their job, marine pilots often embark/disembark to/ from vessels and confront life-endangering personal accidents. In the maritime field, several risk assessments are applied. However, all of them could not evaluate occupational accident risk for maritime pilot specifically. This paper performs specific risk analysis using the bow-tie method based on past accident records. This paper aims to qualify root causes and quantify root causes by importance level according to occurrence probability. As a result of analysis, occupational accident occurrence probability is found to be 14%, indicating that accident occurrence rate is significantly high. Hence, the probability of root causes triggering accidents and accident occurrence probability can be ascertained so that preventive measurements can be implemented. Besides theoretical achievement, this paper provides safety awareness to marine pilots, Marine Pilot Organizations, and ship crew who play a key role during marine pilots' transfer.

발전소 및 수전해 시스템의 수소 폭발 사고 사례 기반 위험성 평가 및 개선 방안 연구 (A Study on the Risk Assessment and Improvement Methods Based on Hydrogen Explosion Accidents of a Power Plant and Water Electrolysis System)

  • 전민재;장대진;이민철
    • 한국수소및신에너지학회논문집
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    • 제35권1호
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    • pp.66-74
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    • 2024
  • This study addresses the escalating issue of worldwide hydrogen gas accidents, which has seen a significant increase in occurrences. To comprehensively evaluate the risks associated with hydrogen, a two approach was employed in this study. Firstly, a qualitative risk assessment was conducted using the bow-tie method. Secondly, a quantitative consequence analysis was carried out utilizing the areal locations of hazardous atmospheres (ALOHA) model. The study applied this method to two incidents, the hydrogen explosion accident occurred at the Muskingum River power plant in Ohio, USA, 2007 and the hydrogen storage tank explosion accident occurred at the K Technopark water electrolysis system in Korea, 2019. The results of the risk assessments revealed critical issues such as deterioration of gas pipe, human errors in incident response and the omission of important gas cleaning facility. By analyzing the cause of accidents and assessing risks quantitatively, the effective accident response plans are proposed and the effectiveness is evaluated by comparing the effective distance obtained by ALOHA simulation. Notably, the implementation of these measures led to a significant 54.5% reduction in the risk degree of potential explosions compared to the existing risk levels.