• Title/Summary/Keyword: fire condition

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Comparison a Forest Fire Spread variation according to weather condition change (기후조건 변화에 따른 산불확산 변화 비교)

  • Lee, Si-Young;Park, Houng-Sek
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2008.11a
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    • pp.490-494
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    • 2008
  • We simulated a forest fire which was occurred in Yangyang area on 2005 and compared a results between two different weather conditions(real weather condition and mean weather condition since 1968) using FARSITE, which is a forest fire spread simulator for preventing and predicting fire in USDA. And, we researched a problem in the transition for introducing, so we serve the basic method for prevention and attacking fire. In the result, severe weather condition on 2005 effected a forest fire behavior. The rate of spread under real weather condition was about 4 times faster than mean weather condition. Damaged area was about 10 time than mean weather condition. Therefore, Climate change will make a more sever fire season. As we will encounter to need for accurate prediction in near future, it will be necessary to predict a forest fire linked with future wether and fuel condition.

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An Experimental Study on the Fire Hazards in Electric Heater (전기히터의 화재위험성에 관한 실험연구)

  • Hong, Sung-Ho;Lee, Bock-Young;Park, Sang-Tae;Yu, Hyun-Jong
    • Journal of the Korean Society of Safety
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    • v.22 no.2 s.80
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    • pp.36-40
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    • 2007
  • This study presents on the analysis fire hazards of electric heater. In order to analyze fire hazards fire experiment is conducted. The fire experiment is conducted to simulate normal condition and abnormal condition. The abnormal condition experiment is simulated in which combustibles are placed near by electric heater. Vertical burning test(UL 94) is conducted for the fire retardant experiment. The results show that fire hazard is high in case of abnormal condition. And Material of electric heater has not fire retardant performance. In this paper, we suggest to add temperature fuse in electric heater for reducing fire hazard.

A Experimental Study on the Fire Safety of Drum-type Electric Washing Machine (드럼세탁기 화재안전성 확보를 위한 실험연구)

  • Hong, Sung-Ho;Lee, Sang-Hyun;Park, Sang-Tae;Yu, Hyun-Jong;Jeon, Woong-Jae
    • Proceedings of the KIEE Conference
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    • 2008.04b
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    • pp.131-133
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    • 2008
  • This study presents on the analysis fire hazards of drum type electric washing machine. In order to analyze fire hazards fire experiment is conducted. The fire experiment is conducted to simulate under the normal condition and abnormal condition. The experiment under the abnormal condition is simulated in safety device failure, situation of accumulated dust and tracking phenomenon caused by humidity. The results show that fire hazard is high at the abnormal condition. In this paper, we suggest to use the safety device of low operating temperature in electric washing machine for reducing fire hazard.

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An Experimental Study on the Fire Behavior of CFT Column under the Constant Axial Loading Condition in Fire (일정축력을 받는 콘크리트 충전 각형기둥의 경계조건 변화에 따른 화재거동특성에 관한 실험적 연구)

  • Kim, Hyung-Jun;Kim, Heung-Youl;Min, Byung-Youl;Kwon, In-Kyu;Kwon, Ki-Hyuk
    • Fire Science and Engineering
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    • v.24 no.6
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    • pp.69-75
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    • 2010
  • A concrete filled square steel tube (CFT) is composed of the external steel material, which its strength is reduced in fire due to sudden temperature increase, and the internal concrete with high thermal capacity that can ensure the fire resistance performance of the structure. Therefore, research about the influence factors of the structural performance of CFT column is required in order to apply CFT column to a fire resisting structure, and additional research about influence for each condition is also necessary. Among the influence factors, the boundary condition between column and beam is important structurally, and it is one of the major factors that determine overall fire resisting performance. This study performed a fire experiment under loading in order to analyse the influences of CFT column to the boundary condition. As the results of the experiment, fire resistance time of 106 minutes was ensured for the clamped-end condition but 89 minutes for the hinge-end condition in case of the 360 cross section. And, fire resistance time of 113 minutes was ensured for the clamped-end condition but 78 minutes for the hinge-end condition in case of the 280 cross section.

An Experimental Study about Fire Resistance effect on Boundary Condition of CFT Column under Loading in Fire (CFT기둥 재하가열 실험에서의 경계조건에 따른 내화성능 영향에 관한 실험적 연구)

  • Kim, Hyung-Jun;Kim, Heung-Youl;Park, Kyung-Hun;Cho, Kyung-Suk;Kwon, In-Kyu
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2010.04a
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    • pp.389-394
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    • 2010
  • A concrete filled square steel tube (CFT) is composed of the external steel material, which its strength is reduced in fire due to sudden temperature increase, and the internal concrete with high thermal capacity that can ensure the fire resistance performance of the structure. Therefore, research about the influence factors of the structural performance of CFT column is required in order to apply CFT column to a fire resisting structure, and additional research about influence for each condition is also necessary. Among the influence factors, the boundary condition between column and beam is important structurally, and it is one of the major factors that determine overall fire resisting performance. This study performed a fire experiment under loading in order to analyse the influences of CFT column to the boundary condition. As the results of the experiment, fire resistance time of 106 minutes was ensured for the clamped-end condition but 89 minutes for the hinge-end condition in case of the 360 cross section. And, fire resistance time of 113 minutes was ensured for the clamped-end condition but 78 minutes for the hinge-end condition in case of the 280 cross section. The difference in the fire resistance performance according to changes in the boundary conditions showed a tendency that larger change effect on the fire resistance performance was derived from smaller cross section area.

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A Experimental Study on the Fire Hazards in Drum-Type Electric Washing Machine (건조일체형 드럼세탁기의 화재위험성에 관한 실험연구)

  • Hong, Sung-Ho
    • The Transactions of the Korean Institute of Electrical Engineers P
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    • v.57 no.3
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    • pp.328-331
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    • 2008
  • This study presents on the analysis fire hazards of drum type electric washing machine. In order to analyze fire hazards fire experiment is conducted. The fire experiment is conducted to simulate under the normal condition and abnormal condition. The experiment under the abnormal condition is simulated in safety device failure, situation of accumulated dust and tracking phenomenon caused by humidity. The results show that fire hazard is high at the abnormal condition. In this paper, we suggest to use the safety device of low operating temperature in electric washing machine for reducing fire hazard.

Numerical study of the Effect of Ventilation Condition on Rolling Stock Fire Growth through the FDS Simulation (환기량 조건이 열차 화재 성장에 미치는 영향성에 대한 FDS 화재 시뮬레이션)

  • Yang, Sungl-Jin;Lee, Chang-Deok;Oh, Ji-Eun;Kang, Chan-Yong
    • Proceedings of the KSR Conference
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    • 2010.06a
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    • pp.124-132
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    • 2010
  • To predict and analyze the rolling stock's fire growth is considered not only important factor in estimating hazard analysis of rolling stock, but also a primary factor in aspect of a rail load facility. Because it's could be regarded as a ignition source in risk assesment for the facility i.e. tunnel and station. However, currently, standardized method to predict and analyze the fire growth has not been completed yet. it is due to the fact that fire growth is not only depended on thermal property of interior materials, but also is affected dominantly by various factors such as ignition source (characterized by location, duration, and intensity), train running condition and in/exterior ventilation condition. Especially, ventilation condition is one of the most effective factor to affect fire growth in compartment space as noticed by under-ventilation fire condition. In this study, the effect of each ventilation condition on fire growth and load were examined through the numerical method through FDS (Fire Dynamics Simulator).

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The Study for Fire Prevention of Main Wooden Cultural Properties of Korea (국가지정 목조문화재의 소방대책에 관한 실태조사)

  • Back, Min-Ho;Lee, Ji-Hyang
    • Fire Science and Engineering
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    • v.24 no.3
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    • pp.1-8
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    • 2010
  • This study is searched in the on actual condition and analysis about the fire fighting measure of 123 main wooden cultural properties designated by the Cultural Heritage Administration. First, the management of wooden cultural properties and the present condition of fire occurrence are arranged. Second, The field research and the information research of related government agencies are done from August. 2008 to October. 2008 about 123 main wooden cultural properties: Cultural properties designation classification, location classification, building area, number of possession cultural properties, present condition of fire fighting, a fire engine drive direction for fire suppression, number of self-defense fire brigade, fire administrator nomination, and the distance and time from a fire station are arranged in this study. Third, the inside and outside present conditions are classified and analyzed by average index for the fire occurrence risk of 123 main wooden cultural properties. And the basic data is arranged for the fire fighting measure of main wooden cultural properties.

A Study on the Actual Education Condition and Improvement of Education Program about Forest Fire (산불교육실태 및 개선방안에 관한 연구)

  • Lee, Si-Young
    • Fire Science and Engineering
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    • v.24 no.6
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    • pp.13-19
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    • 2010
  • In this study, surveys of forest fire division of eight local government about a education program for forest fire prevention and attacking of Forest Human Resources Development Institutes were conducted. In the result, questionnaire answers about improvements of curriculum, requested subject, training camp for forest fire attacking and others were analyzed. So, we made an alternative proposal of education program about forest fire for actively meeting a change of forest condition and forest fire management policy, strengthening of ability that officers in forest fire division required, and enhancing a efficiency.

A Experimental Study on the Arson Fire Characteristics (방화(放火)화재 특성에 관한 실험적 연구)

  • Choi, Jin;Kwon, Oh-Seung;Kang, Kyung-Sik
    • Journal of the Korea Safety Management & Science
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    • v.10 no.2
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    • pp.1-13
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    • 2008
  • This Study is to analyze the characteristics of arson fire under fire dynamics to protect people and property from arson fire which has been radically increased with the development of the Korean economy. Assembly and merchandise purposes such as theater, retail, and exhibition has been performed as the arson fire study. The experiment for this study is based on the analysis of the characteristic for its own combustion process and smoke spread when arson fire occurs. This study presents the analysis through comparing the condition of setting fire using liquid fuel such as thinner on purpose to the condition of setting fire naturally depending on each occupancy.