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Comparison on the fire performance of additional insulation materials for improving the fire retardancy in engine-room of FRP vessel

FRP 선박 기관실 난연성 향상을 위한 추가 방열재의 화재성능비교

  • Choi, Jung-Min (Fire extinguishment and combustion research team, Fire Insurers Laboratories of Korea) ;
  • Um, Han-Chan (Korean Ship Safety Technology Authority) ;
  • Jin, Young-Hwa (Fire extinguishment and combustion research team, Fire Insurers Laboratories of Korea)
  • Received : 2014.09.30
  • Accepted : 2014.11.20
  • Published : 2014.11.30

Abstract

To prevent the flame spread in FRP vessel in fire, the engine-room of the vessel should be constructed additionally with laminated fire-retardant resin over 3 times or equivalent insulation materials to former according to the relevant standard for FRP vessel structure. It is surveyed that insulation materials called 'Gel coat' are widely used in FRP fishing vessel, however, test method and its criteria for Gel coat are not clearly establish and have not been evaluated yet, while test method and criteria for fire-retardant resin and fire-retardant polyurethane composite are described in test standard for type-approval. In this study, 3 fire-retardant resins, 4 gel coats, 1 flame-retardant paint and 1 polyurethane composite were selected based on the survey and were evaluated according to both IMO FTP Code part 5 and flame-retardant test. When comparing based on CFE values from flame-spread test, average value for 4 gel coats were lower than that of 3 fire-retardant resins. As for flame-retardant test, there were no significant differences between fire-retardant resin and gel coat, based on charred area.

강화플라스틱(FRP) 선박은 화재 시 화염확산을 막기 위하여 관련 구조 기준에 따라 기관실 주위 벽 내부를 난연성 수지로 3회 이상 적층하거나, 이와 동등한 방열재로 둘러싸야한다. 관련 난연성 적층용 수지 및 일부 난연재료(연질폴리우레탄복합체)의 경우 선박용 물건의 형식승인 시험기준에 따라 그 성능을 평가할 수 있으나, 방열재로 빈번하게 사용되고 있는 '겔코트'에 대한 성능기준은 명확하지 않은 실정으로 난연성 수지와 화재안전성능이 비교 평가된 바 없다. 본 연구에서는 FRP 선박을 건조하는 조선소를 대상으로 설문조사를 실시하여 사용 중인 난연성 수지 3종, 겔코트 4종, 방염도료 1종 및 폴리우레탄 복합재 1종에 대해 화염전파시험과 방염성능시험을 적용하여 그 성능을 비교하였다. 화염전파시험 결과 임계열유속(CFE) 기준으로 각 종별 평균값을 비교하면 폴리우레탄 복합재, 난연성 수지, 방염도료, 겔코트 순으로 양호한 것으로 나왔고, 겔코트는 3회 도포한 것이 6회 도포한 것보다 양호한 결과를 보였다. 방염성능시험 결과 탄화면적 기준으로 각 종별 평균값을 비교하면 방염도료가 가장 좋게 나왔고 난연성 수지와 겔코트는 유사한 수준으로 나타났다.

Keywords

References

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