• Title/Summary/Keyword: Cause of Accident

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The Risk Analysis for the Rail Transport of Explosives (폭약류의 철도수송에 따른 리스크 평가)

  • Lee, Jae-Hean;Song, Dong-Woo;Lee, Su-Kyung
    • Journal of the Korean Institute of Gas
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    • 제15권2호
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    • pp.33-39
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    • 2011
  • This study presented quantitative risk analysis in case of transporting explosive materials by railway. Accident types were classified into accidents of in station and in transit. And the study presented an initial value of accident frequency through derailment accident and crushing one according to each type, and drew the results of accident frequency through event tree analysis. Damage impact evaluation used TNT equivalent method and probit analysis method. As the result of risk evaluation, railway transportation of explosive materials passing through areas which are high in population density is appeared to be able to cause a large number of personnel injury when occurring accidents. Specially, the accident of explosive transportation combined with petroleum was forecasted as easily resulting in large explosive accident. Consequently, there is a necessity to reduce consequences by decreasing passage through areas where are high in population density, and take measures for lessening the risks in case of transporting dangerous explosive materials.

Analysis on the Characteristics of Hazardous Chemical Transport Vehicle Accidents in Korea (국내 유해화학물질 운송차량사고 특성분석)

  • Jeong, Jae-uk;Lee, Sang-jae
    • Journal of the Society of Disaster Information
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    • 제16권2호
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    • pp.310-317
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    • 2020
  • Purpose: In this study, the characteristics of hazardous chemical transport vehicle accidents during the last six years from 2014 to 2019 was analyzed. This study is to prevent chemical transport accidents. Method: Using statistics from the Ministry of Environment, chemical transport vehicle accidents were classified into accident type, accident cause and vehicle type. Result: Of the total 506 cases chemical accidents, 105 cases were caused by transport vehicle. More than 20 percent of total accidents were reported. Most of the accidents were caused by spill·leak. The main causes of the accident were traffic accidents(49 cases) and management negligence(29 cases). This was more than 74% of all transport vehicle accidents. By vehicle type, 57 cases(54%) were most common in tank lorries, followed by trucks (39 cases, 37%) and trailers (9 cases, 9%). Conclusion: In order to prevent accident of transport vehicle, thorough inspection of the transport vehicle is required and safe operation of the driver. In addition, the government needs to expand real-time monitoring of transport vehicles and comprehensively manage different systems by the relevant ministries.

Analysis of Hebei Spirit Collision Accident by Simulation (시뮬레이션에 의한 허베이스피리트호-삼성바지선 충돌사고 분석)

  • Kim, Sun-Young;Lee, Gyeong-Joong;Park, Se-Kil;Kim, Yeon-Gyu;Lee, Moon-Jin;Son, Nam-Sun;Gong, In-Young;Kim, Mi-Hyun
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 한국항해항만학회 2011년도 춘계학술대회
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    • pp.85-86
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    • 2011
  • On 7 December 2007, the Hebei Spirit, a 260,000 dwt VLCC, anchored near Korea's Daesan Port, was collided with a passing crane-carrying barge Samsung1, which was under tow of two tugs Samsung T5 and Samho T3. In this study, the behaviour of Hebei Spirit at the time of the accident has been reproduced and analyzed by simulation. This study precedes the study for the investigation of any available countermeasures for Hebei Spirit to prevent the accident. The simulation has been done only for Hebei Spiri and the motion of Samsung barge is just given with recorded AIS data. Dynamic characteristics of Hebei Spirit have been modeled based on empirical data and her sea trial data. Effects of current, wave and wind are also estimateed using empirical formula. Considering uncertainty of environmental condition and control of Hebei Spirit, simulation has been done by varying engine control method and holding power coefficients of the anchor. Finally, based on simulations, the most plausible scenario on the state of anchor and engine control could cause real accidents.

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Examination of the Cause of Damage to Capacitors for Home Appliances and Analysis of the Heat Generation Mechanism (가전용 커패시터의 소손원인 규명 및 발열 메커니즘 해석)

  • Park, Hyung-Ki;Choi, Chung-Seog
    • Journal of the Korean Society of Safety
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    • 제26권6호
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    • pp.13-19
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    • 2011
  • The purpose of this study is to examine the cause of damage to electrolytic capacitors and to present the heat generation mechanism in order to prevent the occurrence of similar problems. From the analysis results of electrolytic capacitors collected from accident sites, the fire causing area can be limited to the primary power supply for the initial accident. From the tests performed by applying overvoltage, surge, etc., it is thought that the fuse, varistor, etc., are not directly related to the accidents that occurred. The analysis of the characteristics using a switching regulator showed that the charge and discharge characteristics fell short of standard values. In addition, it is thought that heated electrolytic capacitors caused thermal stress to nearby resistances, elements, etc. It can be seen that the heat generation is governed by the over-ripple current, application of AC overvoltage, surge input, internal temperature increase, defective airtightness, etc. Therefore, when designing an electrolytic capacitor, it is necessary to comprehensively consider the correct polarity arrangement, appropriate voltage application, correct connection of equivalent series resistance(ESR) and equivalent series inductance(SEL), rapid charge and discharge control, sufficient margin of dielectric tangent, etc.

Alternative Prevention on Human Error of Fatal Injuries by the Folk Lifts (지게차 사망재해의 인적오류에 대한 대안)

  • Kang, Hyun-Su;Park, Peom
    • Journal of the Korea Safety Management & Science
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    • 제18권1호
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    • pp.75-82
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    • 2016
  • According to the statistics, occupational fatal injuries by the fork lifts were about 30 per year in whole industrial. Fork lifts are widely used in various parts of industries to improve the efficiency of the work. In this study, the current regulations to be adequate in industrial site have to be renew in order to prevent the fatal injuries by the fork lifts. Fatal injury analysis were conducted with several accident cases by the fork lifts. For each accident, the causes of the injuries were examined and proper safety measures were proposed. In this study, the fork lift showed a high fatality rate in industrial accidents and no detailed cause analysis of fatal accidents was conducted in terms of unsafe acts or conditions. First, fork lifts were the highest of the machines caused the accidents. In order to prevent fatal injuries by the fork lifts, the tarket was manufacturing industry. Second, the order of the cause of cognitive engineering agenda in the manufacture industrial was visibility, responsibility and affordance, and revision of acts was proposed. Third, there was not a lots of different points of human error between occurrence types and business sizes. Forth, number of fatalities by the attacker was more than by the inducer.

A study for investigation and analysis of accidents or hazzards on the turnout (분기기에서의 사고사례조사 및 사고원인분석 연구)

  • Yang, Dae-Kwon;Jang, Bong-Chun;Lee, Dae-Hyung;Shin, Soon-Ho;Kim, Man-Cheol
    • Proceedings of the KSR Conference
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    • 한국철도학회 2006년도 추계학술대회 논문집
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    • pp.91-97
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    • 2006
  • Currently, approx. 10,532 turnouts were installed on the KR line, of which 3,644 turnouts were installed in the main line where high speed operation is performed. This shows that it is necessary to improve the performance of turnout as one of vulnerable areas for the safe operation of a train. Even though the number of railway accidents is decreasing every year due to the renewal of railway facilities, there are still many factors that cause the occurrence of an accident. In particular, an incident in turnout area does not only have a high risk of a serious accident but also affect the operation of a train on the adjacent track in most cases, and consequently a big social loss is expected due to the delay in train operation as well as the loss of life and property. The objective of this study is to examine the accidents occurred in turnout area that is one of typical vulnerable areas over the past ten years, on the basis of the results, and to take an appropriate measure by finding out the major cause of accidents in turnout area so that a systematic safety system can be established to prevent or reduce accidents in turnout area.

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Importance of Human Error to Prevent Industrial Accidents (산업 사고 예방을 위한 인적오류의 중요성)

  • Lee, Kwan-Suk;Lee, Young-Kwan
    • Journal of the Ergonomics Society of Korea
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    • 제30권1호
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    • pp.151-160
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    • 2011
  • There have been many efforts to prevent accidents in Korea for the last 25 years. Many measures in the area of hardware sciences including electrical, mechanical, chemical engineering, etc. were applied to eliminate or at least reduce causes of accidents. However, the accidents rate has not been reduced much despite of these measures. This research aimed to find real causes of these accidents and to suggest a comprehensive model that can mainly be applied to industrial fields to find potential or existence of human errors during the pre-installation stage or after an accident. We tried to explain sequences of an operator's information process that might cause human errors on one hand, and life cycle stages of facilities involved when human errors occur on the other hand. With this comprehensive model presented in this research, one can follow up the sequence of human errors caused by operators. Further, errors made at the design stage which could be a main cause of accidents can be tracked. It is recommended that this comprehensive model should be used to prevent human errors in industrial fields since safety personnel can easily find out errors or error potentials through the life cycle stages of manmachine facilities.

Clinical evaluation of chest trauma (흉부손상의 임상적 고찰)

  • 김영호
    • Journal of Chest Surgery
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    • 제15권4호
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    • pp.414-421
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    • 1982
  • 200 patients admitted to the Chest Surgery Department of Jeonbug National University Hospital from January, 1974 to December, 1981 were analyzed clinically. The ratio of male to female was 7: 1, which showed male predominance. Distribution of patients according to age disclosed that over half [62%] of the patients was social age between 20 and 49 years. The most common cause of chest trauma was traffic accident [39%], and the next were stab wound, fall down [17.5%], and hit [8.5%] in decreasing order. Common lesions due to chest trauma were as follows; rib fracture [51%], hemopneumothorax, hemothorax, and pneumothorax in decreasing number. The most common cause of rib fracture was traffic accident [50%] and the associated organ injuries were long bone fracture, head injury, spine and pelvic bone fracture, spleen rupture, and liver laceration. Hemothorax, pneumothorax, and hemopneumothorax were treated with insertion of thoracic catheter in 90 cases, pure thoracentesis in 11 cases, and emergency thoracotomy in 11 cases. In flail chest, 6 patients were treated by intramedullary insertion of Kirschner`s wire and the results were good. The incidence of complication was 17%, including atelectasis [11 cases], pyothorax, fibrothorax, pneumonia, and acute respiratory failure. Four patients were died [2%], and the causes were acute respiratory failure in 2 cases, spinal cord injury in one case and head injury in one case.

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Lessons Learned from Major Environmental Health Disasters in South Korea and the Role of Environmental Health Experts (국내 주요 환경보건 재난의 전개 과정과 그 교훈, 그리고 환경보건 전문가의 역할)

  • Ahn, Jong-Ju
    • Journal of Environmental Health Sciences
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    • 제48권1호
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    • pp.9-18
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    • 2022
  • In today's civilization, it can be impossible to prevent disasters that cause large-scale human and material harm, and the environmental industry is not excepted from this. Over the last 50 years, several large and small environmental health catastrophes have occurred in Korea. Notable instances include the phenol pollution accident in the Nakdong River, the Hebei Spirit oil spill in Taean, Chungcheongnam-do, and the humidifier disinfectant disaster. Looking at these instances, it is clear that the government failed to prevent similar incidents and accidents after the tragedies. The government created and executed different policies to prevent such incidents and accidents, but the majority of them were highly fragmented. It is understandable that depending on the political and social level of the society in which the environmental health hazard incident/accident happened, the investigation of the cause, countermeasures, and policy reaction may differ. To put it another way, the more authoritarian and non-democratic a political social system is, the more likely it is to cover up occurrences and accidents without a deep examination. This is in line with the members of society's level of political awareness and acknowledgment of the importance of life and safety. In 1985, when the Onsan pollution disease was discovered, and in 2011, when we recognized the realities of the humidifier disinfectant disaster, South Korea's political and social systems were entirely different.

Designed rear sensing black-box system using Kinect (Kinect를 이용한 후방 감지 블랙박스 시스템 설계)

  • Kim, Gyu-Hyun;Jang, Jong-Wook
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 한국정보통신학회 2013년도 춘계학술대회
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    • pp.290-293
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    • 2013
  • Due to vehicle personal injury accident does not, and to analyze the cause and prevention of a variety of devices and technologies are coming out. Among other things, representative of the black box, and rear camera. Despite these advances in technology, and vehicle human injuries continue to occur. The reason for this is that the children, the negligence of the driver or the vehicle is in reverse when a person suddenly passed the back of the vehicle, or the rear of the existing detection system is properly detected was unable to. Therefore, In this paper, we want to design a black box to reveal the cause of the accident, using Kinect to prevent accidents, rear-view camera and rear integrated black box system.

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