• 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.

• 한국안전학회지
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• 제37권5호
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• pp.22-32
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• 2022

The domestic smart factory is being built and spread rapidly, mainly by mid-sized companies and large enterprises according to the government's active introduction and support policy. But these factories only promote production system and efficiency, so harmfulness and risk factors are not considered. Therefore, to derive harmful risk factors in terms of industrial safety for 12,983 government-supported smart factory workplaces from 2014 to 2019, industrial accident status analysis compared workplaces with automation facilities and government-supported workplaces with automation facilities. Also, to reduce risks associated with domestic smart factory processes, twenty government-supported workplaces with automation facilities underwent analysis, evaluating risks through a status survey using the process evaluation table. In addition, the status survey considered region, size, industry, construction level, and accident rate; the difference in risk according to the structure of the process was confirmed. Based on the smart factory process evaluation results, statistical analysis confirmed that serial, parallel, and hybrid structures pose different risk levels and that the risks of mixed structures are greater. Finally, safety control system application was presented for risk assessment and reduction in the smart factory process, reflecting the results of disaster analysis and actual condition investigation.

• 신재생에너지
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• 제19권3호
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• pp.22-33
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• 2023

The number of fire and explosion accidents caused by pyrolysis oil and gas at waste plastic pyrolysis plants is increasing, but accident status and safety conditions have not been clearly identified. Therefore, the aim of the study was to identify the risks of the waste plastic pyrolysis process and suggest appropriate safety management measures. We collected information on 19 cases of fire and explosion accidents that occurred between 2010 and 2021 at 26 waste plastic pyrolysis plants using the Korea Occupational Safety and Health Agency (KOSHA) database and media reports. The mechanical, managerial, personnel-related, and environmental problems within a plant and problems related to government agencies and the design, manufacturing, and installation companies involved with pyrolysis equipment were analyzed using the 4Ms of Machines, Management, Man, and Media, as well as the System-Theoretic Accident Model and Processes (STAMP) methodology for seven accident cases with accident investigation reports. Study findings indicate the need for establishing legal and institutional support measures for waste plastic pyrolysis plants in order to prevent fire and explosion accidents in the pyrolysis process. In addition, ensuring safety from the design and manufacturing stages of facilities is essential, as are measures that ensure systematic operations after the installation of safety devices.

• 한국화재소방학회논문지
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• 제23권5호
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• pp.32-42
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• 2009

본 연구는 국내의 화재조사전문교육 운영 실태를 분석하고 개선방안을 도출하는데 있다. 연구결과 현재의 화재조사전문교육은 공적영역(소방, 경찰, 전기안전공사, 가스안전공사 등) 중심으로 이루어지고 있으며 중앙소방학교에서 실시하고 있는 교육이 가장 체계적인 것으로 나타났다. 그리고 사적영역(화재피해이재민, 일반국민 등)을 대상으로 하는 화재조사전문교육은 거의 이루어지고 있지 않는 것으로 나타났다. 이러한 문제점을 개선하기 위해서 현행 중앙소방학교를 평생교육체제로 전환하여 대학의 학위과정과 연계하고 소방방재청에서 시행하고 있는 화재조사관자격증 제도를 외부에 개방 및 학습수준별 5단계로 나누어 운영할 것을 제안하였다.

• 대한교통학회지
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• 제27권3호
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• pp.81-90
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• 2009

도로 네트워크의 안전 관리는 기본적으로 교통안전 조사를 위한 사이트(교통사고 잦은 지점) 선정, 안전문제에 대한 진단, 잠재적 위험요소들에 대한 가능한 대안 선정, 주어진 예산 제약 하에 대안간의 우선순위 결정과 같은 순서로 이루어진다(Persaud, 2001). 효율적인 안전 조사를 위해 요구되는 지점(교통사고 잦은 지점) 선정에 대한 과정은 매우 중요하다. 이에, 본 연구는 인천시 4지 신호 교차로 중 교통사고 잦은 지점으로 선정된 지점의 3년간(2004~2006년) 사고 자료와 기하구조 자료를 이용하여 EB 기법 이용 시 필요한 사고예측모델을 개발하였다. 또한, 교통사고 잦은 지점을 선정하는데 있어 현재 우리나라에서 적용되고 있는 단순사고건수와 심각도를 고려하여 선정된 우선순위와 단순사고건수 대신 EB 기법을 이용하여 예측된 사고건수를 이용하여 선정된 우선순위 비교를 통해 기존 방법의 한계를 제시하고 합리적인 예측모형 개발 필요성을 보여주고자 하였다. 분석 결과, 총 사고건수 추정 시 기존의 사고 예측 방법인 비선형 회귀모형과 EB 기법의 결과 값 모두 예측력이 높은 것으로 나타났지만 지점별 사고건수 예측력을 함께 고려할 경우엔 EB 기법이 비선형 회귀 모형(포아송)의 결과보다 예측력이 좋은 것으로 나타났다. 또한, 도출된 우선순위 비교 결과 대부분의 지점의 우선순위는 크게 변동이 없었으나, 서해4거리 등 몇 개 지점의 개선우선순위에는 상당한 변동이 발생하는 것으로 나타났다. 이는 실제 사고건수를 이용할 경우 발생하는 RTM문제를 본 연구에서 제안한 기법을 사용할 경우 해결가능하다는 것을 시사한다.

• 한국항해항만학회지
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• 제44권3호
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• pp.264-274
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• 2020

로로 페리선은 급선회 시 선박의 선미부 객실의 증개축으로 인한 무게중심 상승, 과도한 화물적재, 발라스트 부족 등으로 인한 복원성 결여 및 고박 부실 등의 여러 가지 원인으로 전복되어 해저에 침몰하였다. 이 연구의 목적은 유체-구조 연성(Fluid-Structure Interaction; FSI) 해석기법을 이용하여 급선회에 따른 빠른 침수 및 전복에 이어 침몰사고로 진척된 원인을 과학적이고 정확하게 규명하고 분석하는 것이다. 이를 위해 사고 당시의 동영상과 사진들을 분석하여 시간에 따른 선박의 정확한 자세를 구현하고, 이에 따른 화물 이동과 선체 외부의 해수 유입구와 선체 내부에서의 유입된 해수의 이동 경로에 따른 해수 유입량을 실선 부양 시뮬레이션 및 유체정역학적 특성치 프로그램을 사용하여 정확히 검증하여 실선 침수·침몰 시뮬레이션을 수행하여 사고원인을 정확하고 객관적으로 규명하고자 하였다.

• 한국원자력학회:학술대회논문집
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• 한국원자력학회 2004년도 추계학술발표회 발표논문집
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• pp.579-580
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• 2004

• 한국항해항만학회지
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• 제27권3호
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• pp.247-252
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• 2003

This paper is mainly concerned with the assessment of safe navigation between ships moving each other in restricted waterways. The numerical simulation of manoeuvring motion was conducted parametrically to propose an appropriate safe speed and distance, which is required to avoid sea accident under the different conditions, such as ship-velocity ratios, ship-length ratios, separation and stagger between ships. As for the calculation parameters, the ratios of velocity difference between two ships were considered as 0.6, 1.2, 1.5 and the ones of ship-length difference were regarded were regarded as 0.5, 1.0, 1.18. From the inspection of this investigation, it indicates the following result. Firstly, the separation between ships is more needed for the small vessel, compared to the large vessel. Secondly, the lateral distance between ships is necessarily required for the velocity ration of 1.2, compared to the cases of 0.6 and 1.5. The manoeuvring characteristics based on this investigation will be very useful for keeping the safety of navigation from the practical point of ships design and traffic control in confined water.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2009년도 세계 도시지반공학 심포지엄
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• pp.643-650
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• 2009

The necessary consequence by the rapid economic growth in large-scale urban excavation is increasing. If the site is the congested in downtown, the scale of excavation will get the large-scale and the extreme depth. We have achieved a high level technology internationally by the design and construction of underground excavation since 1980's. But the accidents during excavation are frequently occurring. So, this demage instigates the human life loss as well as economical loss. The recent accident is come about the damage for public facilities such as the railroad, subway and etc. in addition to the loss of life and property. For these reasons, the recent accident is being caused the damage of copious social overhead capital. The reasons of collapse during excavation can be classified roughly into the administrative part(sanction, permission), the investigation and design, the construction and management and etc. In this study the close check for the cases of the recent collapse is performed and the improvement course for the prevention of collapse is found.

• 한국항해학회지
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• 제24권1호
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• pp.23-34
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• 2000

The human error or error involved with human is still the major portion of the causes of marine casualties and attracting a great concern in ship operation. However, there are not so many researches conducted to investigate or develop methodologies for analyzing such causes of human error in maritime industry, which may be caused by the variety of factors affecting the performance of ship operation and the characteristics of human being. This paper aims to study the methodologies used in investigating human factors or errors in maritime field through the investigation of researches performed so far. The methodology for human factors can be usually classified into one of three types; descriptive studies, experimental research and evaluation research. Also there are many different kinds of applied researches for some specific subjects. Prior to the investigation of the root cause of marine accident related with human error, clear concept of the human factors and systematic taxonomy shall be established. Moreover, it is very important considerations in case of casualty inspection on human factors that the inspector on the accident shall have adequate knowledges, understandings on the concept of human factors including the way of research more than those of methodologies and techniques.