• Proceedings of the KSR Conference
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• 2006.11b
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• pp.207-212
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• 2006

In this study we conducted computer simulation with FDS V4.0.5 for the subway carriage of Seoul Metro to the replacement of interior materials. We tried to use the real data for the simulation by testing the interior materials in our Lab. From the result of the simulation we could confirm the fire resistance of the new interior replaced car to the chosen arson scenario case.

• Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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• 2008.10a
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• pp.337-338
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• 2008

화재시뮬레이션과 피난시뮬레이션은 일반화 되어있으나 이들을 모두 고려한 통합 시뮬레이션의 모델은 잘 알려진 바 없다. 피난은 화재 상황의 영향을 받으나 그 역은 성립한다고 볼 수 없으므로 통합시뮬레이션은 화재시뮬레이션의 결과 데이터를 피난시뮬레이션에 적용하는 형태가 될 것이다. 본 연구에서는 화재시뮬레이션의 결과가 피난상황에 영향을 주는 시뮬레이션을 수행하기 위한 방안과, 그를 위한 피난시뮬레이션 프로그램에서 필수적인 기능과 고려할 사항에 대하여 기본적 경로변경 시나리오를 예로 들어 검토해 본다.

• Proceedings of the KSR Conference
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• 2007.05a
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• pp.559-571
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• 2007

Although the railroad industry has progressed in terms of amount and quality because of the opening of the new express ways in 2004 and the construction and openings of the express railroads of cities, the establishment of safety has been poor so there has been lurking accidents and it resulted in big accidents like a Daegu subway fire. Therefore, this study is to minimize damages of life and property by establishing GIS, a map for emergency and Activity-Action and emergency reaction scenario through a web in case of emergencies mentioned before.

• Proceedings of the Safety Management and Science Conference
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• 2006.11a
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• pp.351-355
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• 2006

• Journal of Korean Society of Transportation
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• v.25 no.6
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• pp.43-53
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• 2007

In this research, in order to more concretely define the concept of the previously vaguely defined fire road, the authors propose new terminology called disaster prevention routes. These are defined as predefined access routes for the quick response to disaster areas. For this, the authors suggest selection techniques for disaster prevention routes considering characteristics of fire trucks and selected areas. The paper also includes legally-based ideas for the executive departments with exclusive responsibility for continuous management and supervision of disaster response. In addition, a case study is performed with a virtual scenario including the outbreak of fire in one borough of Seoul. This case study shows that the damage can be decreased by prompt access of fire trucks. The establishment of predefined access routes to disaster areas can help to protect citizens with more rapid response by emergency crews. Indirect benefits also include reduced congestion of roads through the prohibition of parking and stopping on the chosen roads.

• Journal of the Korean Institute of Gas
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• v.16 no.2
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• pp.52-59
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• 2012

The sprinkler system is regarded as the most effective fire extinguishing system. In this study, we proposed a sprinkler layout optimization framework based on fire simulation and mathematical programming. As a case study, the target space in the form of ordinary residence was set up with the size of $5.2m(L){\times}5.4m(W){\times}2.4m(H)$, and we constructed the fire scenario that polyurethane couch was ignited through carelessness. And we simulated and analyzed fire speed, temperature change and heat release rate according to the type and number of sprinklers installed. Through the formulation of installation and damage costs depending on sprinklers, the sprinkler layout showing optimal performance was resulted from mathematical programming.

• Journal of the Korean Society of Safety
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• v.33 no.6
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• pp.136-143
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• 2018

In this study, we conducted a pilot study on the multiple spurious operations (MSO) analysis in the fire probabilistic safety assessment (PSA) of domestic nuclear power plant (NPP) to identify the degree of influence of the operator actions used in the MSO mitigation strategies. The MSO scenario of the domestic reference NPP selected for this study is refueling water tank (RWT) drain down event. It could be caused by spurious operations of the containment spray system (CSS) of the reference NPP. The RWT drain down event can be stopped by the main control room (MCR) operator actions for stopping the operation of CSS pump or closing the CSS motor operated valve if the containment spray actuation signal (CSAS) is spuriously actuated. Outside the MCR, it can be stopped by operator actions for closing the CSS manual valves or motor operated valve or stopping the operation of CSS pump. The quantification result of a fire PSA model that takes into account all recovery actions for the RWT drain down event lead to risk reduction by about 95%, compared with quantification result of fire PSA model without considering them. Among the various operator actions, the recovery action for the spurious CSAS operations and the operator action for the manual valve are identified as the most important operator actions. This study quantitatively showed the extent to which the operator actions used as MSO countermeasures have affected the fire PSA quantification results. In addition, we can see the rank of importance among the operator recovery actions in quantitative terms.

• Journal of the Society of Naval Architects of Korea
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• v.56 no.5
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• pp.457-463
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• 2019

Damage control is a very important preliminary and primary activity to improve the survivability of naval ships by preventing spread of damage, and various types of onboard damage control training are conducted regularly on naval ships. The scenarios for these trainings should be well organized to improve the training efficiency. However, at present, it takes much time and effort to generate the training scenarios and there is a problem that the procedures and contents of the scenarios vary widely depending on the persons who generate, without the established methods and standards. In this paper, an efficient generation method of damage control onboard training scenarios has been established, especially for flood and fire o n naval ships. Also a computer program has been developed based on the established method. The results showed that this method and computer program reduce the time and effort to generate these scenarios, and it is hoped that the method be used as a ROK Navy Standard.

• Fire Science and Engineering
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• v.29 no.1
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• pp.38-44
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• 2015

This study suggested the problems and their improvement measures for the operation of fire detectors and sprinkler heads installed at apartment houses. According to a census on population and housing in 2010, apartment houses account for 71.6% of the total housing facilities. And by fire statistics data of the National Emergency Management Agency, approximately 25.0% of fire accidents and 46.4% of casualties occur at apartment houses every year. Therefore, this study conducted for identifying the causes and characteristics of fire to establish the fire safety improvement measures for apartment houses. And this study was carried out virtual fire simulation at domestic apartment houses. The scenario of the simulation contains a comparative analysis on the operation time of standard sprinkler heads and residential sprinkler heads, heat detectors and smoke detectors. As a result of simulation, it was found that standard sprinkler heads and heat detectors installed at the existing apartment houses should be replaced with residential sprinkler heads and smoke detectors for rapid fire suppression. In addition, sprinkler systems should be considered to be installed for excluded floor at apartment houses. Especially, it is necessary to construct remote inspect systems like advanced countries for efficiency of apartment houses safety management.

• Journal of the Society of Disaster Information
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• v.16 no.4
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• pp.627-637
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• 2020

Purpose: This experimental study was conducted to find out whether a water-mist fire suppression system can be applied to C.E.P., a representative combustible material of a rack storage. Method: First, it was confirmed whether the water-mist fire-extinguishing system used in this experiment was capable of extinguishing oil fires. After that, the C.E.P. boxes were loaded in the same small space as used in the oil fire experiment, and then the experiment was conducted on three scenarios; door opening, door closing, and door closing and increasing the internal load. The scenario was set considering the opening and space size conditions, which are important factors for the water-mist fire suppression. Result: Oil fire suppression tests have shown that fires are well extinguished in both the door open and closed conditions. In case of a fire of C.E.P. boxes in the same space condition as an oil fire, the fire was not extinguished in the door open condition. Fires were extinguished in the case with the door closed condition, but the afterglow was confirmed. Conclusion: In the oil fire suppression test, a water-mist fire suppression system extinguished a fire in both the door open and closed conditions. However, for the C.E.P fire, it was possible to extinguish only under the door closed condition, and there was a possibility of re-ignition.