• Title/Summary/Keyword: FRP vessel

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Study of the improvement program for fire safety of FRP vessel (FRP선박의 화재안전성 개선방안 연구)

  • Gang, Byeong-Jae;Lee, Hui-Jun
    • Journal of Korea Ship Safrty Technology Authority
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    • s.22
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    • pp.4-18
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    • 2007
  • The purpose of this study is to improve the fire safety characteristic of the FRP vessel. In this study, we analyzed the fire accidents of FRP vessel and investigated the ruels of domestic and other country for the structural fire protection standard of FRP vessel. We suggested the fire-retardent resin quality standard, and the improvement program for fire safety of FRP vessel.

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The disposal process for scrapped FRP fishing vessels (감척으로 인한 FRP 어선의 처리방안)

  • Song, Jung-Hun
    • Journal of the Korean Society of Fisheries and Ocean Technology
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    • v.44 no.1
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    • pp.75-80
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    • 2008
  • A scrapped fiber-reinforced plastic(FRP) fishing vessel causes many environmental problems, because technology development for recycling FRP vessel has not been adequately addressed. FRP is a main material for constructing a small coastal fishing vessel that is an object of reduction policy. Therefore, the FRP wastes derived a scrapped fishing vessel are increasing. In this study, I investigated an effective disposal process for FRP through the analysis of the actual conditions of scrapped FRP fishing vessel. The treatment processes of scrapped FRP fishing vessel are carried out with oil-removing, dismantling, intermediated processing(crushing), and then reclaiming follows burning in the final processing in Korea. However, in Japan, several recycling methods have been developed, for example, the incineration including thermal recovery, the use of cement-reclamation, and the use of asphalt concrete aggregate, because the method of reclaiming after incinerating which is generally used in Korea produces a toxic by-product such as dioxin.

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;Um, Han-Chan;Jin, Young-Hwa
    • Journal of Advanced Marine Engineering and Technology
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    • v.38 no.9
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    • pp.1150-1155
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    • 2014
  • 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.

Stress Analysis and Structural Design of FRP Pressure Vessel (복합재료 압력용기의 응력해서 및 구조설계)

  • Yun, Gwang-Jun;Kim, Tae-Uk;Jeon, Ui-Jin
    • 한국기계연구소 소보
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    • s.20
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    • pp.49-55
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    • 1990
  • Filament-Wound composite pressure vessels offer significant weight saving over the conventional metal pressure vessels. S-2 glass/epoxy pressure vessel was designed, fabricated and tested. It was considered, in the analysis that the matrix and the metal liner of FRP pressure vessel shared the internal pressure. The thicknesses of hoop and helical layers were determinded by the computer program developed for the design of FRP/Metal structural pressure vessel. The computer program increased the structural efficiency about 14% comparing with the netting analysis. The experimental measurement on the deformation by internal pressure agrees with the theoretical analysis within the accuracy of 5%.

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The examination of application possibility and development of new welding joint shape for aluminum alloy (Al어선 선체용접부의 신형상 개발 및 적용 가능성 검토)

  • Jong-Myung Kim;Chong-In Oh;Han-Sur Bang
    • Journal of the Society of Naval Architects of Korea
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    • v.38 no.1
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    • pp.99-107
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    • 2001
  • Manufacture of fishing vessel is needed the effective material for light, strength, fire and corrosion of water in order to improve durability by high-speed and fishing. These fishing vessel can be divided into FRP and AI alloys fishing vessel. FRP fishing vessel is light and effective for strength but highly ignited and susceptible to heat during the manufacturing ship by-produce noxious component for human. In the case of a scrapped ship, it cause environmental pollution. On the other hand, aluminum is a material in return for FRP and has merit of high-strength and lightness. It's more heat proof and durable than FRP and superior to prevent from corrosion. Al alloys fishing vessel development is rising as an urgent matter. But, al alloy has some defect of bad weldability, welding transformation, cracks and overcost of construction. Therefore this study is to develop the new welding joint shape solving aluminum defects and mechanical behavior. First of all, strength was compared and reviewed by analysis of plate, stiffen plate, new model simplified by using plate theory. On the base of this result, plate and new model of temperature distribution, weld residual stress and strength of tensile, compressive force were compared and reviewed by finite element computer program has been developed to deal with heat conduction and thermal elasto plastic problem. Also, new model is proved application possibility and excellent mechanic by strength comparison is established to tensile testing result.

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