• Title/Summary/Keyword: Korea Fire Institute

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Simulation of Pool Fire with Two Rooms Using CFAST Model (CFAST 모델을 이용한 이중격실화재 모사)

  • Ryu, Su-Hyun;Keum, O-Hyun;Kim, Wee-Kyung;Kim, Yun-Il;Bae, Young-Bum;Park, Jong-Seuk
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 2008.11a
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    • pp.444-449
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    • 2008
  • Fire model shall be verified and validated to reliably predict the consequences of fires within its limitations. This study aims to predict pool fire phenomena with two rooms using CFAST and to compare CFAST simulation results with PRISME experimental data which can be applicable to the fire of nuclear power plant facility. Five different mass loss rate(MLR) are used in the simulation and the simulated results of specific quantities such as temperature, chemical composition are compared to the experimental data. From this study, the CFAST simulation results with the proper MLR show better similarity and trend with pool fire experimental data.

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Simulation of Pool Fire with Two Rooms Using FDS Model (화재분석모델을 이용한 이중격실화재 검증분석)

  • Kim, Bong-Hyun;Bae, Yong-Bum;Ryu, Su-Hyun;Lee, Gong-Hee;Kim, Yun-Il;Moon, Chan-Ki;Park, Jong-Seok
    • Proceedings of the SAREK Conference
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    • 2008.06a
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    • pp.1332-1337
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    • 2008
  • Fire model shall be verified and validated to reliably predict the consequences of fires within its limitations. This study aims to predict pool fire with two rooms using FDS and to coompare FDS simulation results with PRISME experimental data which can be applicable to the fire of nuclear power plant facility. Four different sizes of grid (0.08m, 0.1m, 0.125m, 0.2m) are used in the simulation and the simulated results of specific quantities such as temperature, chemical composition, heat flux and heat release rate are compared to the experimental data. From this study, the FDS simulation results with the finer grid resolution show better similarity and trend with pool fire experimental data. The sensitivity analysis and the selection of the proper size grid are essential to predict the consequences of pool fire with two rooms reliably.

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Experimental Study on Fire Hazard of Residential Fires Before and After Sprinkler Activation

  • Sekizawa, Ai;Yanai, Eiji;Takemoto, Akio;Kozeki, Daisuke;Suzuki, Keiko
    • Proceedings of the Korea Institute of Fire Science and Engineering Conference
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    • 1997.11a
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    • pp.376-383
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    • 1997
  • Fire experiments were conducted in a real scale room which is assumed to be a residential living room under the various opening conditions and locations of wood crib fire source to study on fire hazard before and after sprinkler activation. Concentrations of oxygen and carbon monoxide, smoke density, and temperature were measured to look into environmental conditions in a room of fire origin. The response time of residential sprinklers was also examined in relation to distance between sprinkler heads and a fire source.

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Fire Safety Labeling System for Household Goods to Prevent House Fires

  • Kyong-Jin Park;Bong-Kil Kim;Hyun-Mi Kim
    • Journal of the Korean Society of Industry Convergence
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    • v.27 no.4_1
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    • pp.735-740
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    • 2024
  • Data released by the National Fire Agency showed that the total incidence of fires from 2014 to 2023 was 410,497, among which 75,215 were house fires, constituting 18% of the total occurrences. The fatalities resulting from house fires numbered 1,435. Fatalities stemming from prior house fires occurred between midnight and 6 am, coinciding with periods of sleep and diminished responsiveness to fire emergencies. A fire safety labeling system is proposed to prevent fire hazards associated with household products. This system primarily entails indicators of thermal energy and inherent fire attributed to household products. Furthermore, the Korea Fire Safety Institute has suggested adopting a risk label as a concrete measure plan for implementing the fire safety labeling system for household products. The results promise to safeguard the public against fires and increase the exports of household commodities by enhancing the corporate reputation through positive association with fire safety measures.

A study on the fire performance and heat transfer of the HPC column with fiber-cocktail in ISO fire under loading condition

  • Kim, Hyung-Jun;Kim, Heung-Youl;Kwon, In Kyu;Kwon, Ki-Hyuk;Min, Byung-Yeol;Cho, Bum-Yean
    • Computers and Concrete
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    • v.12 no.5
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    • pp.717-737
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    • 2013
  • In this study, experiment and numerical analysis were conducted to identify the heat transfer characteristics and behavior of high-strength concrete upon a fire. The numerical analysis was employed to forecast the characteristics and properties of the high-strength concrete upon a fire, which can not be accomplished through a fire test due to the specific conditions and restrictions associated with the test. The result of the numerical analysis was compared with that of the test to verify the reliability of the analysis. In the numerical analysis of the heat transfer characteristics and behavior of 80 and 100 MPa high-strength concrete upon a fire, the commercial software of ABAQUS(V.6.8) was used. It was observed from the experiment that the contraction of the concrete with fiber-cocktail was mitigated by 25~55 % compared with that without fiber-cocktail because the fiber controlled the heat transfer of the concrete and thus improved the fire-resistance performance of the column.

Application of Signal Pattern Recognition Technique of Digital Wireless Fire Alarm System (디지털 방식 무선 화재알림설비의 신호 패턴 인식기법 적용)

  • Park, Seunghwan;Kim, Doo-Hyun;Kim, Sung-Chul
    • Journal of the Korean Society of Safety
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    • v.37 no.5
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    • pp.14-21
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    • 2022
  • The purpose of this study was to apply the signal pattern recognition technique to the digital wireless fire-alarm system and to reduce unwanted fire alarms. In this study, the fire alarms of the K Institute, which operates the largest digital wireless fire-alarm system in Korea, were classified into normal operations and unwanted fire alarms, and these were analyzed and compared with actual fire signals. In addition, by designing a non-fire signal filter and applying it to the K Institute, we confirmed that the monthly unwanted fire alarm rate of all 5,713 detectors decreased sharply. In particular, the unwanted fire alarm rate for flame decreased from 1.09% to 0.11% and the unwanted fire alarm rate for smoke decreased from 0.65% to 0.035%.