Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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The Fire Risk Assessment of Wood Specimens Coated with Metals in Different Oxidation States in Case of Fire

화재 시 다른 산화 상태의 금속으로 도포된 목재 시험편의 화재위험성평가

  • Eui Jin (Fire & Disaster Prevention Research Center, Kangwon National University) ;
  • Hee Kyung Yoo (Department of AI Software, Kangwon National University) ;
  • Yeong-Jin Chung (School of Fire and Disaster Prevention, Kangwon National University)
  • 진의 (강원대학교 소방방재연구센터) ;
  • 유희경 (강원대학교 AI소프트웨어학과) ;
  • 정영진 (강원대학교 소방방재학부)
  • Received : 2024.11.11
  • Accepted : 2024.12.11
  • Published : 2025.02.10
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Abstract

In this study, the fire risk assessment method for wood specimens is demonstrated using Chung's equations-VII, Chung's equations-VIII, and Chung's equation-IX. As an example, the fire properties were tested using a cone calorimeter according to the ISO 5660-1 standard by selecting wood specimens coated with flame retardants. The external heat flux was 50 kW/㎡. The fire performance index-VII (FPI-VII) is defined as the ignition time (TTI, s) divided by the product of the peak smoke release rate (SPRpeak, ㎡/s), the peak heat release rate (PHRR, kW/㎡), and the CO/CO2 mean rate ratio (COPmean (g/s) / CO2Pmean (g/s)). Considering the importance of the early stage of fire, the first peak smoke release rate and the first peak heat release rate were applied. The Fire Growth Index-VII (FGI-VII) is defined as the product of the maximum smoke release rate (㎡/s), the maximum heat release rate (kW/㎡), and the CO/CO2 mean production ratio (COPmean (g/s) / CO2Pmean (g/s)) divided by the time to reach the maximum smoke production rate. The first maximum values of SPR and PHRR were chosen to assess the risk in the early stage of fire. The comprehensive fire risk assessment was conducted using the fire risk index-IX (FRI-IX), which is obtained by dividing the fire growth index-VIII (FGI-VIII) by the fire performance index-VIII (FPI-VIII).

이 연구에서는 Chung's equations-VII, Chung's equation's-VIII, 그리고 Chung's equation-IX에 의하여 목재 시험편에 대한 화재 위험성 평가 방법을 논의하였다. 예로서 화재특성은 난연제로 도포된 목재 시편을 선택하여 ISO 5660-1 표준에 따라 콘칼로리미터를 사용하여 시험하였다. 외부 열유속은 50 kW/㎡로 하였다. 화제성능지수-VII은 착화시간을 최대 연기발생률, 최대열방출률, CO/CO2 평균발생률비의 곱으로 나눈 값으로 정의된다. 화재 초기 단계의 중요성을 고려하여 제1 최대연기발생률과 제1 최대열방출률이 적용되었다. 화재성장지수-VII은 최대연기발생률, 최대열방출률, CO/CO2 평균발생률비의 곱을 최대연기발생률에 도달하는 시간으로 나눈 값으로 정의된다. 연기발생률과 열방출률의 제1 최대값은 화재 초기 단계의 위험을 평가하기 위해 선택되었다. 종합적인 화재 위험성평가는 화재성장지수-VIII을 화재성능지수-VIII로 나누어 얻은 값인 화재위험성지수-IX를 이용하여 평가하였다.

Keywords

References

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