Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Prediction of Fire Risk and Fire Risk Grade of Five Wood Species by Chung's Equation-IX and Chung's Equation-XII

Chung's equation-IX 및 Chung's equation-XII에 의한 목재 5종의 화재위험성과 화재위험성등급 예측

  • JiSun You (Fire Research Center, Korea Institute of Civil Engineering and Building Technology) ;
  • Yeong-Jin Chung (The National Safety Environment Institute)
  • 유지선 (한국건설기술연구원 화재안전연구소) ;
  • 정영진 (국가안전환경원)
  • Received : 2024.08.11
  • Accepted : 2024.09.03
  • Published : 2024.10.10
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Abstract

Chung's equation-IX and Chung's equation-XII were utilized to predict the fire risk and evaluate fire risk ratings for five types of wood: white ash, hard maple, willow, fraxinus mandschurica, and sagent cherrys. The combustion tests were conducted using a cone calorimeter test method by ISO 5660-1 standards. The fire risk and fire risk rating (FRR) were compared with fire risk index-IX (FRI-IX) and fire risk index-XII (FRI-XII). The results yielded a fire performance index-XI (FPI-XI) ranging from 0.44 to 1.05 and a fire growth index-XI (FGI-XI) ranging from 0.89 to 3.11. Also, the fire risk index-XII (FRI-XII), indicated fire risk rating, exhibited an increasing order of sagent cherry (0.85): Grade A ≈ PMMA (1): Grade A ≈ white ash (1.22): Grade A ≈ hard maple (1.53): Grade A < willow (4.00): Grade C < faxinus mandschurica (7.07): Grade D. Additionally, the fire risk index-IX (FRI-IX) was PMMA (1): Grade A ≈ hard maple (2.28): Grade A ≈ sagent cherry (3.24): Grade A < white ash (5.73): Grade B < fraxinus mandschurica (10.29): Grade C ≪ willow (48.30): Grade G. In general, the willow and fraxinus mandschurica showed the highest fire risk. In conclusion, although the expression of the index is different as shown based on the criteria of FRI-IX and FRI-XII, predictions based on fire risk assessment of combustible materials showed a similar tendency.

5종의 목재에 대한 화재위험성의 예측 및 화재위험성 등급을 평가하기 위해 Chung's equation-IX과 Chung's equation-XII를 이용하였다. 시험편은 미국물푸레나무, 사탕단풍나무, 버드나무, 들메나무, 산벚나무를 선정하였다. 연소시험은 ISO 5660-1의 콘칼로리미터 시험법을 이용하였으며, 화재위험성지수-IX (FRI-IX)과 화재위험성지수-XII (FRI-XII)에 대한 화재위험성과 화재위험성등급(FRR)을 비교하였다. 그 결과 화재성능지수-XI (FPI-XI)와 화재성장지수-XI (FGI-XI)은 0.44~1.05와 0.89~3.11로 얻어졌다. 그리고 화재위험성지수-XII (FRI-XII)는 산벚나무(0.85): 등급 A ≈ PMMA(1): 등급 A ≈ 미국물푸레나무(1.22): 등급 A ≈ 사탕단풍나무(1.53): 등급 A < 버드나무(4.00): 등급 C < 들메나무(7.07): 등급 D 의 순으로 증가하였다. 또한 화재위험성지수-IX (FRI-IX)은 PMMA(1): 등급 A ≈ 사탕단풍나무(2.28): 등급 A ≈ 산벚나무(3.24): 등급 A < 미국물푸레나무(5.73): 등급 B < 들메나무(10.29): 등급 C ≪ 버드나무(48.30): 등급 G의 순으로 나타났다. 공통적으로 화재위험성은 버드나무와 들메나무가 가장 높게 나타났다. 결론적으로 FRI-IX와 FRI-XII의 기준을 근거로 하여 보여준 바와 같이 지수의 표현은 다르나, 가연성 재료의 화재위험성평가에 의한 예측은 유사한 경향성을 제시하였다.

Keywords

Acknowledgement

This work is supported by the Korea Agency for Infrastructure Technology Advancement (KAIA) grant funded by the Ministry of Land, Infrastructure and Transport (Grant RS-2022-00156237).

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