• 제목/요약/키워드: Explosion accidents

검색결과 300건 처리시간 0.027초

Fault Tree Analysis 기법을 이용한 발파사고 분석 (An Analysis of Blasting Accidents by Fault Tree Analysis)

  • 서승록;이정훈
    • 대한인간공학회지
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    • 제20권3호
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    • pp.61-76
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    • 2001
  • This study is for analyzing the explosion accidents in the tunnels, roads, subways, streets and various kinds of building construction area with the use of Fault Tree Analysis(FTA). based on the police Department and Guns & Explosives Safety Technology Association's researching materials. the explosion accidents have been investigated and analyzed between 1988 and 1977. As the result, we can find out that the majority of the explosion accidents in Korea is the accidents by flown stones(45.7%), like in Japan. So we make the research chart which is needed for analyzing the explosion accident, and then analyze these accidents systematically. using the investigation codes of the industrial accidents. After that, the FTA was performed on the accidents by flown stones. They result fromm non-observance of the safety rules, and lees knowledge of the safety and so on. Moreover several causes are combined and then the accidents are apt to happen. So according to the results of this study, for the protection of the explosion accidents, the specialized safety education is badly needed and the enough investigation of the places before the work along with the management for safety in working must be planned.

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중소규모 건설현장 화학물질로 인한 화재·폭발 재해예방 사례연구 (Case Study on Prevention of Fire/Explosion Accidents caused by Chemical Substances in Small/Medium Sized Construction Sites)

  • 신운철;권준혁;이용수
    • 대한안전경영과학회지
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    • 제16권3호
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    • pp.63-70
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    • 2014
  • There has been an increase in fire/explosion accidents caused by chemical substances used in new small/medium sized construction, reconstruction, or extension sites. There is vast room for improvement, especially in safety training, safety inspection, and selection of countermeasures because training, technicality, and management systems regarding fire/explosion risks in small/medium sized construction sites are very immature in most cases. The purpose of this study is to propose a differentiated technical, educational, and management application plan for preventative management of fire/explosion accidents caused by chemical substances used in small/medium sized construction sites.

제조업에서의 용접·용단 작업 중 화재·폭발·질식 사망사고 특성 (The Characteristics of the Fatal Accidents Caused by Fire, Explosion and Asphyxiation during Welding and Flame Cutting in the Manufacturing Industry)

  • 서동현;한우섭;이근원
    • 한국안전학회지
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    • 제34권3호
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    • pp.21-27
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    • 2019
  • Many accidents have been occurring during welding and flame cutting work related to maintenance and repair as the domestic manufacturing facilities gradually become decrepit. However, it is not easy to find the accurate statistics and analysis data on accidents occurring during welding or flame cutting operations related to maintenance and repair of machinery and equipment. Therefore, in this study, the fatal accident cases of fire/explosion and asphyxiation that occurred during the welding and flame cutting work in the manufacturing industry were collected and their characteristics were analyzed. Then, we tried to find the connection of the accidents according to the machinery/equipment and the work content, and to provide the materials and measures that can be used to prevent the similar accidents. We collected 329 cases of the fatal accidents related to fire/explosion and leakage/contact of chemical substances in the domestic manufacturing industry during the last 10 years (2008 ~ 2017). Among them, 72 accidents occurred during welding or flame cutting were extracted and the related reports were investigated whether they occurred during usual work or unusual work. Also, the machinery/equipment and the work content related to the accidents were classified and analyzed based on the criteria. The analysis results showed that 31 cases of the fire/explosion accidents occurred during usual work and 32 cases during unusual work, and it was found that 9 cases of asphyxiation death occurred during usual work. Then, from the analysis results, the connections of the machinery/equipment and the work contents related to the accidents were schematized into a accident tree.

AUTODYN을 이용한 LNG 폭발 사고 위력 평가에 관한 법공학적 연구 (A Forensic Engineering Study on Evaluation of Explosive Pressure and Velocity for LNG Explosion Accident using AUTODYN)

  • 김의수;김종혁;심종헌;김진표;고재모;박남규
    • 한국안전학회지
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    • 제30권4호
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    • pp.56-63
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    • 2015
  • Gas explosion accidents could cause a catastrophe. we need specialized and systematic accident investigation techniques to shed light on the cause and prevent similar accidents. In this study, we had performed LNG explosion simulation using AUTODYN which is the commercial explosion program and predicted the damage characteristics of the structures by LNG explosive power. In the first step, we could get LNG's physical and chemical explosion properties by calculation using TNT equivalency method. And then, by applying TNT equivalency value about the explosion limit concentration of LNG on the 2D-AUTODYN simulation, we could get the explosion pressure wave profiles (explosion pressure, explosion velocity, etc.). In the last step, we performed LNG explosion simulation by applying to the explosion pressure wave profiles as the input data on the 3D-AUTODYN simulation. As a result, we had performed analyzing of the explosion characteristics of LNG in accordance with concentration through the 3D-AUTODYN simulation in terms of the explosion pressure behavior and structure's destruction and damage behavior.

Poisson분포를 이용한 도시가스 화재 폭발사고의 발생 예측프로그램 및 사회적 위험기준에 관한 연구 (Study on Predictable Program of Fire.Explosion Accident Using Poisson Distribution Function & Societal Risk Criteria in City Gas)

  • 고재선;김효;이수경
    • 한국화재소방학회논문지
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    • 제20권1호
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    • pp.6-14
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    • 2006
  • 가스로 인한 화재 및 폭발사고의 예측 가능한 프로그램을 구체화하고, 적절한 사회적 위험기준을 제시하기 위하여 최근 11년간의 가스사고 데이터베이스를 분석하였다. 먼저 동일유형의 가스사고 발생가능 성을 판단할 수 있는 Poisson 분석 방법을 적용하기 위해 3개의 사고유형, 즉 누출, 폭발, 화재로 구분하여 총 16개 항목으로 나누어서 적용하였다. 그 결과, 시공 작업 부주의-폭발-배관의 항목의 사고발생반도가 가장 작았으며, 배관연결부이완부식-누출-배관의 경우는 가장 높은 빈도를 나타내었다. 따라서 이에 대한 적절한 가스사고 대응책이 마련되어야 할 것이다. 또한 치명적인 가스사고의 추세와 합리적인 위험정책에 대한 지침을 결정하기위해 D. O. Hagon 방정식과 회기직선식을 이용하여 F.N 곡선의 누적사망자의 최소 및 최대점에 대응시켜 허용가능영역을 설정하였다. 향후 가스사고에 대한 신뢰성 있는 분석을 위해서는 가스로 인한 화재 폭발사고에 대한 데이터베이스를 지속적으로 확충보완을 시켜야 되며, 이를 위한 표준 코드화 작업이 요구된다.

부탄연소기 폭발로 인한 인체 상해 평가에 관한 연구 (The Study on Evaluation of Human Body Injury by Explosion of Portable Butane Gas Range)

  • 김의수;심종헌;김진표;박남규
    • 한국안전학회지
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    • 제31권3호
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    • pp.60-67
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    • 2016
  • The gas leak and explosion accident is able to give a fatal injury to nearby people from the explosion center and interest in effect of the explosion on the human body is increased. Accidents by Portable Butane Gas Range of a gas explosion accident occupy the most share. As a result, the injury on the human body frequently occur. However, It is situation that are experiencing difficulties in consequence analysis of explosion accidents owing to shortage of explosion power data and lack of research on the effect of the human body by the gas explosion. This paper acquire human injury data by performing the actual explosion experiment with Portable Butane Gas Range and evaluate power by explosion and effect of explosion on the human body to perform explosion simulation with LS-DYNA program. It is intended to contribute to the exact cause of the accident investigation and the same type of accident prevention.

LPG 폭발로 인한 건설현장 굴착웅덩이의 구조물 파손 특성에 관한 연구 (A Study on the Failure Characteristic of Excavation Puddle by LPG Explosion using AUTODYN)

  • 김의수
    • 한국가스학회지
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    • 제26권5호
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    • pp.58-65
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    • 2022
  • Gas explosion accidents could cause a catastrophe. we need specialized and systematic accident investigation techniques to shed light on the cause and prevent similar accidents. In this study, we had performed LPG explosion simulation using AUTODYN which is the commercial explosion program and predicted the damage characteristics of the structures by LNG explosive power. In the first step, we could get LPG's physical and chemical explosion properties by calculation using TNT equivalency method. And then, by applying TNT equivalency value about the explosion limit concentration of LPG on the 2D-AUTODYN simulation, we could get the explosion pressure wave profiles (explosion pressure, explosion velocity, etc.). In the last step, we performed LPG explosion simulation by applying to the explosion pressure wave profiles as the input data on the 3D-AUTODYN simulation. As a result, we had performed analyzing of the explosion characteristics of LPG in accordance with concentration through the 3D-AUTODYN simulation in terms of the explosion pressure behavior and structure destruction and damage behavior. The analyses showed that the generated stresses of the structures were lower than the compressive strengths in cases 1(two lane) and 2(four lane), while the generated stress in case 3(six lane) was 8.68e3 kPa, which exceeded the compressive strength of 5.89e3 kPa.

가스터빈 내부 냉각계통 발화에 의한 고온부품 손상의 현상학적 고찰 (A Phenomenological Review on the Damage of Hot Gas Parts caused by Explosion of Gas Turbine Cooling System)

  • 유원주;이승현
    • 대한안전경영과학회지
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    • 제12권2호
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    • pp.75-82
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    • 2010
  • Gas turbines for power generating operate in a very high temperature condition and use natural gas for fuel. For this reason, many cases of damage happen at hot gas parts which are severely affected by high temperature gas and many cases of explosion occur by fuel gas. So a lot of efforts should be made to prevent hot gas parts damage and gas explosion accidents. Though there are many damage cases and explosion accidents, it is very difficult to find out the root causes of hot gas parts damage caused by gas explosion due to gas leakage in the heat exchanger for air cooling and gas heating. To prevent gas turbine from damage caused by gas explosion, removal of leakage gas from gas turbine is inevitably required before firing the gas turbine and installing alarm systems is also required for detecting gas leakage at stop valve to turbine while shut down.

국내 가스 사고사례 중 NG 및 LPG의 가스 화재.폭발사고 예측시스템 구축에 관한 연구 (Study on Prediction System Construction of Fire.Explosion Accident by NG & LPG among Domestic Gas Accidents)

  • 고재선;김효
    • 한국가스학회지
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    • 제10권1호
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    • pp.48-55
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    • 2006
  • 한국적 상황에 적절한 사회적 위험기준을 제시하고, 도시가스시설에 대한 화재 및 폭발사고에 대한 포괄적이고 정량적인 예측프로그램을 만들기 위하여 최근 11년간의 가스사고 데이터베이스를 분석하였다. 동종유형의 가스사고 발생가능성을 판단할 수 있는 Poisson분석 방법을 적용한 결과(t=5년), 시공 작업 부주의-폭발-배관의 항목의 사고발생반도가 가장 작았으며, 배관연결부이완부식-누출-배관의 경우는 가장 높은 빈도를 나타내었다. 따라서 이에 대한 적절한 가스사고 대응책이 마련되어야 할 것이다 향후 가스사고에 대한 신뢰성 있는 분석을 위해서는 가스로 인한 화재 폭발사고에 대한 데이터베이스를 지속적으로 확충보완을 시켜야 되며, 이를 위한 표준 코드화 작업이 요구된다.

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보일러실 화재.폭발사고 경감방안에 관한 연구 (A Study on the mitigation method of explosion and fire accidents in the Boiler room)

  • 손은수;백명기;송재수;조원철;이태식
    • 한국방재학회:학술대회논문집
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    • 한국방재학회 2007년도 정기총회 및 학술발표대회
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    • pp.405-409
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    • 2007
  • This paper focused on the way of prevention of disaster in the accident of explosion when the fire broke out in the boiler room where installed the basement of the building, and showed the effective ways for sustaining people and property safely in the view of problems and improvement of the law and safety awareness of people.

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