• Fire Science and Engineering
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• v.18 no.4
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• pp.22-26
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• 2004

The static eliminator is used for prevention of disasters by static discharge, improvement of production efficiency, protection of a sensitive electronic element on the discharge of static, and it is handled for elimination of static in the painting plant, the film manufacturing plant, the producing semi-conductor factory. This study described on the explosion appearance by discharge phenomena on the voltage input type eliminator's ion generation bar of inflammable gas through an experimental tests. It was used Hydrogen, Ethylene, Propane, Methane gas with the inflammable gas and it was studied on the ignition phenomena by the length of ion-generation static bar, the number of ion-generation electrode and the variation of input voltage to the ion-generation electrode. As a result of this study it was confirmed that the shorter of the bar's length, the greater of explosion danger. And it is considered that there will not ignite at general using inflammable gas, in case of more than 900 mm bar and one electrode.

• Journal of the Korean Institute of Gas
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• v.26 no.4
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• pp.36-40
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• 2022

Recently, the biggest topic in the industry is the area of industrial safety and health management. Since city gas is flammable gas and has a high risk of fire and explosion, much effort is required to prevent serious industrial and citizenry disasters. As part of city gas safety management, this study attempted to quantitatively predict the scope and degree of damage in the event of an explosion accident caused by city gas leakage through the Consequence Analysis. As a result, there was a difference in the accident result value according to various leakage conditions such as pressure and weather conditions. Through this study, a scenario of explosion due to city gas leakage will be prepared when performing city gas safety management work and used to prepare more effective accident prevention and emergency action plans.

• International Journal of Advanced Culture Technology
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• v.11 no.3
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• pp.346-357
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• 2023

The purpose of this study is to suggest improvement plans for prevention regulations by reflecting the toxicity, fire and explosion effects of hazardous materials factories and surrounding areas using an off-site consequence assessment program. Regarding the effects of the hydrogen cyanide leak accident, which is the 1st petroleum of the 4th class flammable liquid, Areal Locations of Hazardous Atmospheres (ALOHA) program was used to compare and analyze the extent of damage effects for toxicity, overpressure, and radiation. As a result, the toxicity was analyzed to exceed 5km in the area with Acute exposure guideline level (AEGL)-2 concentration or higher, the overpressure was 103m in the range of 1 psi or more, and the radiant heat was analyzed to be 724m in the range of 2kw/m² or more. Toxicity and radiation affected the area outside the hazardous material storage area, but the overpressure was limited to the inside of the hazardous material storage area. Therefore, we propose to improve the safety management of hazardous materials by conducting a risk assessment for hazardous materials and reflecting the results in internal and external emergency response plans to prepare prevention regulations.

• Fire Science and Engineering
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• v.31 no.3
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• pp.97-105
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• 2017

Because asphalt is a solid at normal temperature and is not a hazardous material as stipulated in the Safety Management Act on Hazardous Materials, it is often recognized as having no risk of fire or explosion. On the other hand, it is as dangerous as flammable liquid because it is heated to $170-180^{\circ}C$ and stored in a storage tank. This study analyzed the risk of fire and explosion during the storage and handling of asphalt and the actual conditions of asphalt regulations by fire service organizations. Moreover, this study analyzed the domestic case of explosions in the production process of asphalt concrete (ASCON) and domestic and foreign cases of asphalt storage tank explosions. The analysis suggested that unlike Japan, Korea has no asphalt regulations in fire service organizations. Explosions can occur when ignition is delayed after fuel is sprayed on the dryer drum burner of the aggregates during the production of ASCON. A physical explosion can occur in the storage tank when environmental purification facilities suddenly work strongly to remove air pollutants or bad smells during the heating of asphalt in an asphalt storage tank. In addition, explosions can occur when fires such as welding is performed in the asphalt storage tank.

• Proceedings of the Korea Society for Energy Engineering kosee Conference
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• 2007.11a
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• pp.232-237
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• 2007

• Fire Science and Engineering
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• v.6 no.1
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• pp.55-64
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• 1992

대부분의 플라스틱 분진은 폭발 위험을 내포하고 있으며 이러한 분진 폭발위험은 공장의 설계와 운영시 고려하여야 할 요소이다. 이러한 위험을 평가하고 그에 따르는 적절한 대책을 세우기 위하여는 무엇보다도 분진의 폭발 특성을 파악하여야 한다. 일반적으로 사용되고 있는 분진 폭발대책은 폭발을 안전하게 방출시키는 것이며 쉽게 발화되넌 플라스틱의 건조 공정, 분쇄 공정등에 있어서는 Suppression이나 Inerting등의 방법을 사용하는 것이 효과적이다. 이러한 기본적인 방법 외에도 일반적인 예방 대책으로는 위험 지역의 분류, 관리 철저, 그리고 분진 발생과 발화원을 최소화하고 폭발이 발생할 경우 폭발 지역을 자동 차단하도록 공장을 설계하는 것이다.

• Journal of the Korean Professional Engineers Association
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• v.37 no.3
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• pp.38-41
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• 2004

지난 4월 22일 발생한 북한의 룡천역 폭발사고로 인하여 사망자수 150여명, 부상자수 1,300여명에 달하는 엄청난 재해가 발생하였다고 전해지고 있다. 룡천역을 중심으로 반경 500m 파일이 완파되었으며, 폭발 영향권도 4km에 달하였고 반경 500m 안에는 역사와 학교 및 4-5층 규모의 아파트가 다수 있었기에 피해 규모가 더욱 컸다고 알려 졌다. 1990년대 들어 우리나라도 심대한 대형 재난사고를 당하였다. 성수대교 붕괴(1994), 대구지하철 공사장 가스폭발(1995), 삼풍백화점 붕괴(1995), 대구지하철 화재(2003) 등 잇따른 대형 참사는 우리의 위기관리 현실을 되돌아보게 하였고, 국민들은 언제 발생할지 모를 재난에 대한 불안감으로 그 어느 때보다 안전한 나라에 대한 열망이 강한 것이 사실이다.(중략)

• Proceedings of the Korea Institute of Fire Science and Engineering Conference
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• 1997.11a
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• pp.203-210
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• 1997

Reports of explosions in cargo and storage tanks of high flash point liquids such as residual fuel oil, asphalt, and oily waste water have shown that these explosions have occurred even when the liquid temperatures are well below the liquid nominal flash point. The reasons for these seemingly paradoxical explosions are reviewed and results of recent laboratory tests are presented to better define the conditions leading to flammable vapor atmospheres in these tanks. The potential effectiveness of various prevention measures are discussed including inerting, monitoring tank vapor concentrations, and periodic cleaning of condensation and deposits on the tank walls and roof.

• Journal of Ocean Engineering and Technology
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• v.23 no.3
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• pp.59-64
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• 2009

Bridge types such as the suspension bridges and the cable stayed bridges maintained by cables present the dangerous possibility of a ship running through the bottom of the bridge. Due to hangers and main cables in the upper structural system, the bridge is also susceptible to disasters. However, these cable bridges are usually used for long span bridges over the sea. This structure is relatively more exposed to disasters, such as wind, hail, and earthquake, than other structures. This structure also has the potential to cause car accidents on account of the poor visibility due to foggy conditions. If a fire breaks out because of a car accident due to wind, a car explosion will likely occur.

• Journal of the Korean Society of Safety
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• v.18 no.3
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• pp.120-125
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• 2003

This research analyzes blasting accident cause that is happening construction and engineering works spot taking advantage of AHP (Analytic Hierarchy Process) techniques as metrical. Result that apply AHP with blasting accident that is happened the South Korea and Japan, appeared by thing which relative importance by human cause is highest. Specially, it is observance of safety rule that dominate the highest ratio among of human cause, and if observe a little, causes that prevention is possible are much. By result of this research, necessity of safety education is important first of all for prevention of blasting accident. Also, thorough safety control plan of during work and enough on-the-slut probe before work should be established. Because explosives uses gunpowder and explosive high energy, work by qualified person is essential. Ant it may become help to minimize dissipation of important life and property preventing beforehand explosion accident of gunpowder.