• Title/Summary/Keyword: Real scale fire test

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The Real Scale Fire Test for Unit Space in Apratment housing (공동주택의 단위공간 실물화재실험)

  • Yoo, Yong-Ho;Kweon, Oh-Sang;Kim, Heung-Youl
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • pp.346-351
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    • 2009
  • 본 연구에서는 화재시 많은 인명피해가 예상되는 공동 주택을 대상으로 단위공간별 화재 성상을 예측하기 위한 실물화재실험을 실시하였다. 구성된 실물화재모델은 비교적 가연물량이 많은 침실과 화재 발생 위험도가 높은 주방을 대상으로 하였으며, 실험 모델에 구성된 단위품목은 일반주택의 가연물을 선조사 한 후 선정하였다. 실험결과 침실의 경우 점화 후 약 5분이 경과되었을 때 플래쉬오버 상태에 이르게 되어 매우 급격한 성장을 보였으며, 최대 열방출율 약 7433.3 kW, 최대 일산화탄소 578.6 ppm, 최대 이산화탄소 1.25ppm, 내부 최대온도 1350$^{\circ}$로 측정 되었다. 특히, 화재 발생 초기에 가연 공간에서 화재의 진화가 이루어지지 않으면 약 3분 내에 인체에 급격한 피해를 줄 수 있는 한계온도 이상으로 화재가 성장하기 때문에 신속한 초기 대응이 필요함을 확인하였다. 이러한 실물화 재실험에서 얻어낸 결과는 향후 화재확대 예측 시뮬레이션 결과와 비교함으로써 각 용도별 공간에서의 화재 확산 예측에 적용 될 수 있을 것이다.

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An Experiment Study for Flame Spread Prevention System of Snadwich Panels (샌드위치 패널의 화재확대 방지시스템 개발을 위한 실험적 연구)

  • Shin, Hyun-Joon;In, Ki-Ho;Yoo, Yong-Ho
    • Korean Journal of Air-Conditioning and Refrigeration Engineering
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    • v.27 no.6
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    • pp.307-312
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    • 2015
  • The sandwich panel is commonly used domestically because it's less costly and easier to handle. But fires have frequently occurred in buildings employing sandwich panels, such as the fires in Eecheon cold storage and in Gwangju Pyungdong industrial zone. Sandwich panels with steel plates on their surface prevent fire water from penetrating to the fire source, which makes it difficult to extinguish a fire in a timely manner. Toxic gas generated from some insulation material leads to serious loss of life and property. This study is intended to develop an extinguishing system for sandwich panels, thereby reducing the fire risk. Fire water and volume were determined in the wake of the study on the structure of a sandwich panel extinguishing system, and improvement and testing of the fire characteristics of the sandwich panel. Based on such study and test, a fire model test was conducted. Consequently, the sandwich panel with extinguishing system was proven to have a reduced fire risk, compared to traditional or fire retardant panels.

A Study on Fire Characteristics of Solid Combustible Materials Based on Real Scale Fire Test (실규모 실험에 의한 고체가연물의 화재특성 연구)

  • Kim, Sung-Chan
    • Fire Science and Engineering
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    • v.25 no.5
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    • pp.62-68
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    • 2011
  • A series of fire tests involving realistic solid combustible materials was conducted to quantify the heat release rate and investigate the fire growth characteristics during the initial fire growth stage. For these tests, single/double wood cribs, urethane cushion having polypropylene covers and wood crib on nylon carpet with urethane carpet padding were used as a fuel source. The fire growth coefficient of the solid combustible materials was quantified and the fire growth characteristics were compared with the $t^2$ fire scenario. The mean effective heat of combustion was evaluated by the total mass loss of fuel and total energy release concept and examined the effect of the ventilation and fire condition. The present study provides the practical information on the fire growth characteristics of solid combustible material to design to a set of fire scenarios for the fire risk analysis.

The Risk Assessment of Tunnel Fire Through Real Scale Fire Test (실물터널 화재실험을 통한 터널화재 위험도 평가)

  • 최준석;최병일;김명배;한용식;장용재;이유환;황낙순;김필영
    • Fire Science and Engineering
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    • v.16 no.3
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    • pp.71-76
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    • 2002
  • The real scale tunnel fire tests are carried out for the first time in domestic range to assess the extent of risk in the tunnel fire. The tunnel dimension is 465 m in length, 9.2 m in width and 6.5 m in height. Gasoline pools with 0.25 MW∼2.5 MW size and a 1500CC passenger car are used as fire sources. Six jet fans are used to change the flow velocity inside the tunnel. Temperatures at total 86 points in the tunnel are measured to find the temperature distribution and smoke behavior in the real tunnel fire. In the experiment, it is examined that the important parameters to assess the extent of risk in tunnel fire such as back layering of smoke front, descending of smoke layer and the fire size of a real passenger car.

A Research for Identification Method of Sprayed Fire-Resistive Material by Thermal Analysis (열분석을 통한 내화 뿜칠재 일치성분석 연구)

  • Cho, Nam-Wook;Rie, Dong-Ho;Shin, Hyun-Jun
    • Fire Science and Engineering
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    • v.25 no.1
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    • pp.7-12
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    • 2011
  • As recent buildings are getting more high-rise and larger, steel structures, not a reinforced concrete structure, for columns and beams among the main structural members in a building are being widely used. Steels used for the main members of a building are constructed with a fire-resistive structure by applying them with fire-resistive coatings. The introduction of a simple test method that can verify the performance of fire-resistive material constructed on a site without conducting a fire-resistant test(real scale fire test) is needed and this study derived a site analysis method possible to make a rapid and scientific analysis through the analysis of components (instrumental analysis) concerning tire-resistive materials. the possibility of application of it in analyzing congruence over site construction materials by recognizing it as a standard material after securing an inherent fingerprint area of tire-resistive materials of which performance was verified in the concrete through thermal analysis was proved through experiments. This research result can be minimize of casualties, who is harmed to building collapse according to structures fire.

A Study on the Fire Characteristics of Aluminum Composite Panel by Large Scale Calorimeter (라지스케일 칼로리미터에 의한 알루미늄 복합패널 외장재의 연소특성에 관한 연구)

  • Yun, Jung-Eun;Min, Se-Hong;Kim, Mi-Suck;Choi, Sung-Bok
    • Fire Science and Engineering
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    • v.24 no.2
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    • pp.89-96
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    • 2010
  • In this research, exterior material combustion experiment was really tested to evaluate fire risks of aluminium complex panel which is used a lot for building exterior material. As a result, We saw fast fire spreading of aluminium complex panel. The reason is polyethylene in aluminum complex panel combust spreading fast fire flame vertically. In this test, the highest heat release rate of aluminum complex panel was 1,144 kW and surface temperature which is measured by thermocouple went up to more than $903.3^{\circ}C$, that temperature is quite a higher than $660^{\circ}C$ which is aluminum melting temperature. So, fire of aluminum complex panel can be evaluated to give us severe damage both by fast fire spreading vertically and by fire spreading through openings internally. These results from real experiment will be able to use to predict fire spreading of aluminum complex panel by comparing to modeling materialization of aluminum complex panel in the future.

A Study of Fire Extinguishment Characteristic for the Real Scale Deap-Seated Fire (실규모 심부화재 소화특성에 관한 연구)

  • Kim, Nam-Kyun;Rie, Dong-Ho
    • Fire Science and Engineering
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    • v.29 no.2
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    • pp.13-19
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    • 2015
  • Real scale fire tests was carried out for extinguishing performance evaluation of the wetting agent. The experiment was conducted in accordance with a Class A fire extinguishing test methods specified in the 'Type Approval of the Manual System Fire Extinguisher and Technical Standards of Test'. In addition, the subjects of this experiment were the wood flour and rice husk. Fire-fighting water, the three kinds of wetting agents used in the country and this study was used, was undertaken to determine a clear discrimination of the water and wetting agent. In the experimental results, it was confirmed that the internal temperature is maintained long time in the case of water. The internal temperature were rapidly lowered in the experiment of wetting agents. Therefore, the discrimination of extinguishing ability was confirmed by the temperature distribution in accordance with time. Based on the results of this experiment, this study is expected to be used as a underlying material on presenting a method of optimized performance evaluation of wetting extinguishing agent.

A Validation Study of Temperature Field Predicted by Computational Fire Model for Spray Fire in a Multi-Compartment (다중구획공간내 분무화재시 화재해석모델의 온도장 검증연구)

  • Kim, Sugn-Chan
    • Fire Science and Engineering
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    • v.28 no.5
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    • pp.23-29
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    • 2014
  • The present study has been conducted to investigate the validity of the computational fire model and the results predicted by BRANZFIRE zone model and FDS field model are compared with a real scale fire test with spray fire in a multi-compartment. The liquid spray fires fueled with toluene and methanol are used as the fire source and the quantitative measurement of heat release rate is performed in an isolated ISO-9705 compartment with a standard door opening. The temperature field predicted by FDS model showed good agreement with the measurement in the fire room and the corridor, and BRANZFIRE model also gave acceptable result in spite of its simplicity and roughness. The mean temperature predicted by FDS model corresponds with measurement within maximum discrepancy range of 25% and the overall mean value of FDS model matched well with experimental data less than 10%. This study can contribute to establish the limitation and application scope of computational fire model and provide reference data for applying to reliable fire risk assessment.

Feasibility Study on the Fire Scenario Design of a Couch Burning through a Fire Spread Model (화염 전파모델을 이용한 소파화재 설계화원구성의 적용성 연구)

  • Kim, Sung-Chan
    • Fire Science and Engineering
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    • v.30 no.6
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    • pp.37-42
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    • 2016
  • The present study has been performed to examine the feasibility of a flame spread model on the design fire scenario for fire risk analysis. Thermo-Gravimetric analysis and sample burning test were conducted to obtain the material properties of a single couch covered with synthetic leather material and a series of FDS calculations applying with the measured material properties were performed for different grid sizes. The overall fire growth characteristics predicted by the fire model were quite different from the results of a real scale fire test and the initial peak value of the HRR and total released energy showed the results within a 30% discrepancy for the computational grids used in the present study. The current model has some limitations in predicting the fire growth characteristics, such as fire growth rate and the time to the maximum HRR. This study shows that the fire model may be applicable to creating the design fire scenario through continuous model improvement and detailed material properties.

A study of the HRR and fire propagation phenomena for the fire safety design of deep road tunnel (대심도터널 화재 안전 설계를 위한 승용차의 열방출률 및 화재전파 특성에 관한 연구)

  • Yoo, Yong-Ho;Kweon, Oh-Sang
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.12 no.4
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    • pp.321-328
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    • 2010
  • The study performed an actual fire experiment in order to propose the heat release rate of automobile that is the most basic architectural element for the fire safety design in a tunnel, whose importance has been recognized as the underground traffic tunnels are planned in Korean metropolitan cities. The heat release rate of a van is measured by the large scale calorimeter, in which the law of oxygen consumption is applied, and the fire expansion characteristics in a tunnel by placing two passenger cars nearby one another in the tunnel. As the results, the heat release rate of the van was revealed to be 5.9 MW, and carbon monoxide was emitted 482 ppm at a maximum. In case of two passenger car experiment for the fire expansion characteristics, the adjacent car was ignited about 3 minutes 30 seconds after the fire occurrence, and the complete fire was developed after 15 minutes. The maximum heat release was 9 MW. The results from the actual fire experiment can be an important input data for future quantitative analysis as well as an element applicable to a tunnel disaster preventive equipment design.