• Fire Science and Engineering
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• v.27 no.1
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• pp.39-45
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• 2013

This study analyzes the explosion hazard of dry cleaning solvent recovery machine in laundry shop in two aspects, i.e. combustible and ignition source, and determines the explosive conditions of this machine by conducting mockup explosion tests repeatedly, varying conditions and using real dry cleaning solvent recovery machines. As to combustibles, two kinds of combustibles used widely in Korea have been selected and tested. The flash points, LEL's, and saturation vapor pressures of those combustibles have been measured, and their explosion specific curves have been drawn, based on the results of the measurements, so that the explosion risks of those materials may be determined, depending on the temperatures. Potential voltages generated from materials for laundry and foreign materials of metals have been assumed to be the ignition sources in this application, and their potential voltages have been measured, depending on temperature, humidity, and antistatic agent, by using real materials for laundry and a potential voltage measuring device. Tests have been conducted, varying the quantities, concentrations, and operating temperatures of materials for laundry. As a result, explosions have not been generated with potential voltages of materials for laundry, but explosions have been observed when applying artificial spark energy of 2.0 mJ.

• Journal of Navigation and Port Research
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• v.45 no.3
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• pp.109-116
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• 2021

The explosion of a chemical tanker ship during cargo transshipment via double-banking at Ulsan Port, resulted in major damage including fires involving nearby ships. As a follow-up measure to prevent the recurrence of similar accidents, the 'Safety Management of Dangerous Goods in Port' was established, and the designation of a transshipment pier for dangerous goods is required given the risk of explosion and the impact on major facilities in the port. This study evaluated the Fire & Explosion Index of major transshipment cargoes in Ulsan Port to design a transshipment pier based on the Explosion Risk Assessment. Based on the results of Fire & Explosion Index evaluation of styrene monomer and benzene, severe explosion risk was confirmed, and the exposure radius was calculated. Based on the results of the exposure radius, the risk range for each major pier was calculated, and 12 terminals were proposed as transshipment pier candidates considering port facilities, surrounding dangerous facilities, and residential aspects. Since the results of the study suggest transshipment piers based on the risk radius alone, maritime traffic safety, pier and mooring facilities, safety facilities and accessibility for emergency response should be considered comprehensively to designate actual transshipment piers.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 1998.05a
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• pp.147-150
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• 1998

현대의 고도화된 산업발달과 함께 생산품의 고품질, 다품종, 대량생산을 위한 설비의 대형화, 공정의 복잡화, 위험성이 높은 물질의 대량 사용 등으로 인하여 잠재위험이 더 한층 증가하게 되었다. 따라서 산업현장에서 여러 가지 잠재위험으로 인하여 화재, 폭발, 독성물질 누출 등 대규모 중대산업사고의 발생 가능성이 커졌으며 사고 발생시 현장의 근로자, 인근지역 주민, 주변의 환경에까지 막대한 영향을 미치게 된다. (중략)

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2000.11a
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• pp.373-376
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• 2000

현대의 화학산업시설에서는 다양한 잠재위험으로 인하여 화재, 폭발, 독성물질 누출 등의 중대산업사고의 발생 가능성 및 사고결과의 피해 범위가 증가되고 있다. 만약 사고가 발생한다면, 현장의 근로자, 인근지역 주민, 주변의 환경에 심각한 영향을 미칠 수 있으며, 사회적·경제적 불안 요소를 제공하게 된다. 지금까지는 정량적 위험성 평가라는 방법을 사용하여 화학공장의 안전관리를 수행하였으나 이번 연구에서는 이러한 사고의 위험도를 낮추기 위하여 RBI라는 기법을 사용하여 효과적이고 효율적인 안전성 향상 모델을 제시하고자 한다.(중략)

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 1999.06a
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• pp.141-148
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• 1999

우리 사회가 경제적으로 급속히 발전됨에 따라 공업화, 도시의 밀집화, 생활양식의 다양화 등으로 인하여 각종 위험물의 사용이 급증하게 되었으며, 이로 인하여 잠재위험성도 함께 증가되어 각종 위험물 취급 부주위에 따른 폭발화재사고가 급증하고 있다. 한 건의 사고가 인적$\cdot$사회적$\cdot$경제적으로 막대한 피해와 손실을 가져오게 되는 것을 과거 재해사례에서 명백하게 경험할 수 있었다. (중략)

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2019.11a
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• pp.267-267
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• 2019

The purpose of this study is to understand the risk of chemical product, Styrene Monomer(SM), shipped in a vessel. SM is harmful chemical product which can make injury, explosion and/or fire in a vessel. The understand of SM risk is very important to protect seafarer's body and vessel safety. This research can be expected that the understanding of SM risk by a seafarer's to prevent accidents by SM explosion/fire. In this study we used event tree analysis method using chemical reaction cased by explosion. As a result, we founded various chemical reaction and visualization for explosion path.

• Journal of the Korean Institute of Gas
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• v.23 no.1
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• pp.54-61
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• 2019

As the market for portable electronic devices expands, the demand for Lithium Ion Battery (LIB) is also increasing. LIB has higher efficiency than other secondary batteries, but there is a risk of explosion / fire due to thermal runaway reaction. Especially, Electric Vehicles (EV) equipped with a large capacity LIB cell also has a danger due to a large amount of toxic gas generated by a fire. Therefore, it is necessary to analyze the risk of toxic gas generated by EV fire to minimize accident damage. In this study, the flow of toxic gas generated by EV fire was numerically analyzed using Computational Fluid Dynamic. Scenarios were established based on literature data and EV data to confirm the effect distance according to time and exposure standard. The purpose of this study is to analyze the risk of toxic gas caused by EV fire and to help minimize the loss of life and property caused by accidents.

• Journal of the Korean Institute of Gas
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• v.24 no.1
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• pp.76-81
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• 2020

Recently, fire and explosion accidents caused by sparks scattered during welding and melting work in the work place where flammables are present. The causes of such fire accidents are mostly non-compliance with basic safety rules such as the removal of hazardous goods and the prevention of sparks scattering. It is strongly recommended to revise Industrial Safety and Health Act. This study analyzes the fire and explosion accidents in the work of firearms, such as welding and melting work, and analyzes the causes from a system perspective, and proposes an improvement plan for the system such as expanding the number of fire monitors, pre-approval of fire risk work, and intensifying fire prevention safety education.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2000.06a
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• pp.64-69
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• 2000

오늘날 분진은 석유 화학공업, 제약공업, 플라스틱공업 등 기능이 점점 다양화되고 있으며 산업분야에서도 광범위하게 이용되고 있다. 그로 인해 분진 폭발사고는 대형 공정에서뿐만 아니라 저장, 취급, 운송하는 일반화된 공정에서도 정전기 방전등의 점화원에 의해 화재 및 폭발의 위험성이 증가하고 있다. 이러한 재해를 미연에 방지하기 위해 안전관리의 일환으로 분진의 최소착화에너지(Minimum Ignition Energy; MIE)를 측정하여 관리하고 있다. (중략)

• Journal of the Korean Institute of Gas
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• v.20 no.5
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• pp.89-95
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• 2016

Keeping the gas pipelines in the common utility tunnel is useful because it has a lower risk of corrosion than conventional burial, and can prevent from excavating construction. But, explosions in common utility tunnels can cause greater damage from the blast overpressure compared to outdoor explosions, due to nature of the confined environment. Despite this fact, however, research on common utility tunnels has been limited to fire hazard and little has been studied on the dangers of explosions. This study developed scenarios of methane gas explosion caused by gas leak from gas piping within the common utility tunnel followed by unknown ignition; the study then calculated the extent of the impact of the explosion on the facilities above, and suggested the needs for designing additional safety measures. Two scenarios were selected per operating condition of safety devices and the consequence analysis was carried out with FLACS, one of the CFD tools for explosion simulation. The overpressures for all scenarios are substantial enough to completely destroy most of the buildings. In addition, we have provided additional measures to secure safety especially reducing incident frequency.