Fire Science and Engineering (한국화재소방학회논문지)

Korean Institute of Fire Science and Engineering (한국화재소방학회)
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Analysis of the Maximum Heat Release Rate in Accordance with the Test Method of the Flame Retardant Performance for Pipe Insulation

배관용 보온재의 난연 성능 시험방법에 따른 최대 발열량 분석

  • You, Woo Jun (Dept. of Architecture & Fire Safety, Dong Yang Univ.) ;
  • Park, Jung Wook (Dept of Fire & National Emergency, Gyeong Il Univ.) ;
  • Sin, Yeon Je (Dept. of Architecture & Fire Safety, Dong Yang Univ.) ;
  • Park, Hyeong Gyu (Dept. of Architecture & Fire Safety, Dong Yang Univ.) ;
  • Lim, Ohk Kun (R&D Laboratory in Korea Fire Institute)
  • 유우준 (동양대학교 건축소방안전학과) ;
  • 박정욱 (경일대학교 소방방재학과 대학원) ;
  • 신연제 (동양대학교 건축소방안전학과) ;
  • 박형규 (동양대학교 건축소방안전학과) ;
  • 임옥근 (한국소방산업기술원)
  • Received : 2019.11.28
  • Accepted : 2019.12.24
  • Published : 2020.02.28
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Abstract

In this study, the heat release rate of pipe insulation is analyzed by considering the installation status in accordance with the standards ISO 20632 and NFPA 274. The flame retardation rate was evaluated for six types of test samples: polyethylene foam covered with beaten silver (PE(S)), PE foam tapped (PE(N)), elastomeric closed cell thermal insulation (rubber), Japanese PE foam (PE(J)), Japanese polyurethane foam (PU(J)), and Japanese styro form (ST(J)) by EN 13501-1 and fire growth curve. The results show that PU(J), PE(J), and PE(N) were Class E and ultra-fast, NFPA 274 test standards for Class D and Fast, and PE(S) by ISO 20632 were Class C and Slow, and Rubber and ST(J) were Classes and Low. However, the changes in the time-averaged maximum heat release rate for each test standard (ISO 20632 and NFPA 274) to evaluate the flame retardation rate differed among identical materials. This means that the fundamental study is necessary to analyze the more accurate reasons.

본 연구에서는 보온재의 설치 상태를 고려한 ISO 20632와 NFPA 274 시험 기준에 따른 발열량 산출 결과를 분석하였다. 이를 위해서 보온재 총 6종(은박 발포폴리에틸렌(PE(S)), 무은박 발포폴리에틸렌폼(PE(N)), 고무발포(Rubber), 일본-폴리에틸렌폼(PE(J)), 일본-폴리우레탄폼(PU(J)) 그리고 일본-스티로폼(ST(J)))에 대해서 EN 13501-1과 화재성장곡선에 따른 난연 등급을 구분하였다. 그 결과 PU(J), PE(J) 그리고 PE(N)는 Class E 및 Ultra-fast, NFPA 274 시험기준에 의한 PE(S)는 Class D 및 Fast, ISO 20632에 의한 PE(S)는 Class C 및 Slow, 그리고 Rubber와 ST(J)는 Class B 및 Slow로 나타났다. 하지만, 난연 등급 평가 기준인 최대 발열량에 대한 시간평균 기울기는 시험 방법에 따라서 동일 보온재에 대하여 다르게 나타났으며, 보다 정확한 원인을 분석하기 위한 기초 연구가 필요한 것으로 판단된다.

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References

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