• Title/Summary/Keyword: Oil-spill

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Development of Water Wheel Type Oil Skimmer (수차형 유회수기의 개발)

  • 노준혁;박안진;강상훈;이영식;김종현;윤범상
    • Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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    • 2000.10a
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    • pp.123-128
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    • 2000
  • The ocean is now increasingly suffering from pollution mainly caused by oil spill accidents roil increasing marine transportation. It cause not only the deterioration of ocean resources but also critical damage on the ocean ecosystem. Present study is an experimental one for the development of the oil skimmer which can collect spilled-oil actively and effectively from the sea surface. As an effort of achieving it, a new type of water wheel attached nil skimmer was devised, based upon the concept of orifice. The shapes of the water wheel, blades and oil storing tank are found to be very important factors on the oil skimming performance through systematic experimental analysis. Real oil recovery test was also carried out in square tank using the oil skimmer with their optimal shapes. Quite satisfactory result are obtained from the test which showed 99% and 98% recovery rates for light oil and heavy oil in still water condition, respectively.

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Discussion on the Criterion for the Determination of On-Water Oil Removal Resource Requirement in Korea (우리나라 기름오염 방제능력 확보기준의 타당성)

  • Kang Seong-Gil;Sung Hong-Gun;Lee Moonjin;Choi Hyuek-Jin;Yu Jeong-Seok;Kang Chang-Gu
    • Journal of the Korean Society for Marine Environment & Energy
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    • v.5 no.4
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    • pp.3-18
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    • 2002
  • The present study was carried out to discuss the suitability of the criterion for the determination of the on-water oil removal resource requirement in Korea by comparison with the US criterion. According to the present criterion in Korea, the on-water response operation against the worst case discharge assuming the oil spillage of 60,000 ton from the accident of DWT 300,000 tanker requires the oil recovery capacity of 19,425 kl/hr (on-water recovery volume 20,000 ton). Under the US criterion, the recovery capacity of 16,667 kl/hr is required to respond to oil spill accident of the worst case discharge from the DWT 300,000 tanker. The result shows that resource requirement from the Korean criterion is 16% higher than US criterion, indicating that thc Korean criterion is reasonable.

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A Study on the Decision Making Procedure of Clean-up Endpoints for Oiled Shorelines in Korea (우리나라 해안오염 방제종료 의사결정절차의 고찰)

  • Kim, Dong-Geun;Jeon, Hae-Jong;Kim, Jae-Dong
    • Journal of Fisheries and Marine Sciences Education
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    • v.24 no.5
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    • pp.712-720
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    • 2012
  • Recently, many problems related on shoreline response to spill oil were exposed again on a occasion of M/T Hebei spirit accident even though the weakness on the shoreline response system has been brought up since M/T Sea Prince oil spill accident. Therefore the establishment of shoreline response system that best suits our country is needed through considering the response system of well-developed country. The socioeconomic conflict between the persons concerned on the clean-up endpoints can be sharpened in Korea because the frequency of coastal use of our country is too high compared to other countries. Thus procedural justification, that is, how the clean-up endpoints be established is more important than what type of clean-up endpoints be used. In the present paper, we attempted to suggest a new manner on the decision making system for clean-up endpoints that best suits our country. The decision making system for clean-up endpoints need to be divided into two steps, that is, set-up step of clean-up endpoints criteria and decision step of clean-up endpoints. The decision making organization of local governments play a key role in case of set-up step of clean-up endpoints criteria, while the response command headquarters under Korean coast guard and decision making organization of local governments codecide whether the clean-up endpoints criteria is fits or not.

A Study on Long-term Monitoring of Seaweed Flora and Community Structure at Hakampo, Western Coast of Korea (한국 서해안 학암포 해조상 및 군집구조의 장기모니터링 연구)

  • Heo, Jin Suk;Han, Su Jin;Choi, Han Gil;Nam, Ki Wan
    • Korean Journal of Fisheries and Aquatic Sciences
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    • v.48 no.6
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    • pp.969-976
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    • 2015
  • Macroalgal community structure was seasonally examined at Hakampo (Taean) in western coast of Korea from February 2007 to October 2010. Also, the effects of "Hebei Spirit" oil spill on the seaweed community structure were evaluated. A total of 101 macroalgal species were identified, comprising 12 green, 18 brown and 71 red algae. Species richness ranged 58-65 species with maximal in 2008 and minimal in 2009. Seaweed biomass ranged $75.81-102.06g\;dry\;wt./m^2$ (mean, $88.78g/m^2$) with maximal in 2008 and minimal in 2010. Vertical distribution from the high to low intertidal zone was Neorhodomela aculeata and Polyopes affinis; Corallina pilulifera and Chondrus ocellatus; Sargassum thunbergii and Ulva australis. Coarsely-branched seaweeds comprised the highest proportion of biomass ($37.17g/m^2$, or 41.86% of the total biomass) and ecological state group I (ESG I) seaweed biomass was between 81.67-85.44%. Also, ephemeral macroalgae including Ulva species sharply increased in species number and biomass within 1-2 year from the "Hebei Sprit" oil spill in the mid and low intertidal zone. Hakampo rocky shore is still good condition as evaluated based on macroalgal species number, biomass, and composition in functional form and ESG I seaweeds.