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공일천 ( Il-chean Kong ),박일규 ( Il Gyu Park ),임경범 ( Kyung Bum Lim ),이동호 ( Dong Ho Rie ) 한국안전학회(구 한국산업안전학회) 2013 한국안전학회지 Vol.28 No.3
As the feature of fire, it is hard for deep-seated fire to spread to the deeper site, and it also has danger for being re-ignited cause of recontacting with oxygen after being put off. Now it is ruled in the certification criteria of wetting agent used for extinguishing deep-seated fire that the criteria for surface tension is below 33[mN/m] in Korea. For figuring out how much water for fire-fighiting can permeate into combustibles, in this research, the permeating performance is analyzed by measuring the speed of permeating and transmission quantity released after that, by pouring solution whose surface tension is changed by adjusting concentration of surfactant BDG (Butyl Di Glycol) in column From this result, it is can be determined that transmission quantity becomes less and wet area goes wider as surface tension is lower, and it is also able to be analyzed as quantity of absorbed liquid and wet area is increased because fluid permeates into the core.
김성수(Kim, Sung-Soo),공일천(Kong, Il-Chean),이장원(Lee, Jang-Won),김진수(Kim, Jin-Su),박일규(Park, Il-Guy),이동호(Rie, Dong-Ho) 한국화재소방학회 2012 한국화재소방학회 학술대회 논문집 Vol.2012 No.춘계
포소화약제는 물과 혼합시, 물의 표면장력을 저하시켜 공기와 혼합 교반을 통하여 거품을 발생시키는 약제로 소화에 이용되는 소화용수의 효율적 이용을 위하여 이용된다. 특히, 유류화재에 사용시 유면을 거품으로 덮어 질식소화에 적합한 특성을 가지고 있다. 포소화약제는 발포 방식에 따라 저발포, 중발포, 고발포로 나누어지는데 국내의 포소화약제 기준에는 저발포와 고발포의 2가지만을 규정하고 있어, 소화에 더욱 효과적이라 평가되는 중발포 소화기의 이용이 어렵다. 본 연구에서는 휴대용 중발포 소화기를 이용하여 발포실험과 소화실험을 실시하고, 저발포, 중발포, 고발포의 특성을 분석하였다. 결과로 3% 농도로 중발포 소화기 이용시 26.1배의 팽창률을 보였으며, 20단위 화재모형을 32초에 소화시킴으로써 중발포 소화기의 발포, 소화능력을 검증하였다.
인공지능 피난유도설비 적용에 따른 최적 대피시뮬레이션 연구
장재순 ( Jae Soon Jang ),공일천 ( Il-chean Kong ),이동호 ( Dong Ho Rie ) 한국안전학회(구 한국산업안전학회) 2013 한국안전학회지 Vol.28 No.3
For safe evacuation in the fire disaster, the evacuees must find the exit and evacuate quickly. Especially, if the evacuees don′t know the location of the exit, they have to depend on the evacuation guidance system. Because the more smoke spread, the less visibility is decreasing, it is difficult to find the way to the exit by the naked eye. For theses reasons, the evacuation guidance system is highly important. However, the evacuation guidance system without change of direction has the risk introduce to dangerous area. In the evacuation safety assessment scenario by the evacuation simulation has the same problem. Because the evacuee in the simulation evacuate by the shortest route to the exit, the simulation result is same like the evacuation without the evacuation guidance system. In this study, it was used with MAS (Multi Agent System)-based simulation program including the evacuation evacuation guidance system to implement the change of evacuation by fire. Using this method, confidence of evacuation safety assessment can be increase.