• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2011.06a
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• pp.227-228
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• 2011

이 연구는 기름 유출 사고 시 해상에서 실시되는 방제활동을 보다 신속하고 효과적으로 실시하기 위해 사고초기부터 오일붐의 필요량을 신속하고 간단하게 제시해주는 프로그램의 개발에 대하여 알아보려고 한다. 유출유의 기계적회수를 위해 유회수기, 임시저장탱크의 필요수량은 제시되었으나, 오일붐은 제시되지 못하고 있다. 본 연구에서는 해양선진국 및 국제해사기구(IMO)에서 제시한 오일붐의 필요수량에 대한 방법들을 활용해 프로그램에서 유출규모, 유막특징의 입력을 통해 오일붐의 최소 및 권고량이 제시되도록 NI(National Instuments)사(社)의 LabVIEW 2010버전으로 프로그래밍 되었다. 기름유출 시 OBM Program을 이용해 누구나 쉽게 오일붐 필요량을 파악할 수 있고, 신속하게 오일붐의 필요량이 파악되어 방제활동 대응시간을 단축시켜주며, 단축된 대응시간만큼 피해규모의 축소를 기대할 수 있다.

• The Journal of Fisheries Business Administration
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• v.42 no.2
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• pp.97-112
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• 2011

The coastal and offshore fishery to manage from a fishery permit system in our country at present seems to be a sign of lots problem, which are illegal fishing, a permit rent, non fishing vessel the purpose of vessel reduction, fishery compensation, tax exemption oil, the excessive occurrence of administrative cost due to differences during a period of a fishery permit. All the readjustment system for the permit has suggested an effective solution for a fishery permit management, the maintenance of a fishery order(the prevention of illegal fishery), the prevention of unused fishery, the entrance of new vessel in coastal fishery and it's system has prevent this problems in ahead. This paper has estimated an prevention convenience for an illegal spill of the tax exemption oil, actual effects of vessel reduction, the conservation of fishery resource for the future value and carried out an economic analysis to estimate compliance cost for the system introduction. Also, this study have analyzed throughly the coastal fishery situation and catched lots of issues on the management for the permit system. Especially, the problems improving the readjustment introduction for the permit have estimated the social and economic effects quantitatively and qualitatively with a calculated technique to classify various scenarios. This paper has judged correctly the term of validity for the permit to shorten as a result of the estimation and it will be to take the net convenience cost 1,655thousand million won. The results of this study have expect to provide a basic data to introduce the readjustment system for the permit.

• Korean Journal of Microbiology
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• v.54 no.3
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• pp.293-294
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• 2018

Yangia sp. TSBP01, isolated from tidal flat sediment contaminated by the oil spill, is known to convert indole to indigo via an intermediate called indoxyl. Our analysis revealed that Yangia sp. TSBP01 contained the genome of 5,165,974 bp (G + C content: 66.5%) being composed of two chromosomes and five plasmids. This strain had genes encoding several oxygenases such as indole oxygenase directly involved in the conversion of indole to indoxyl.

• Fire Science and Engineering
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• v.23 no.6
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• pp.57-65
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• 2009

Fire suppression tests are carried out for a train car using water mist systems. Three kinds of fire scenario applied to the real-scale train car are a surface fire representing car combustibles, a oil pool fire pretending an oil spill and a blocked fire for evaluation of space-cooling capacity. Five fixedpressure water mist systems and one self-contained water mist system with nitrogen gas are used for fire suppression experiments. Almost water mist systems can extinguish effectively train car fires, and fire-control capability of the system is seen due to the space cooling.

• Journal of Navigation and Port Research
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• v.38 no.4
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• pp.379-384
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• 2014

In case of sunken tankers, remaining-oil recovery operation should be conducted due to possible oil spill accident. However, the deep sea operation make difficulties in checking the completion of remaining oil recovery process, therefore the work termination procedure is very important. In this paper, a reasonable work termination procedure through the comparison and analysis of two cases(Youil No.1 and Osung No.3, Kyung-Shin) which were performed in different method, using disparate equipment. By investigating previously applied methods and techniques, work speed, safety and expenses were compared. The proposed ending procedure of the remaining-oil recovery project is to recover the remaining oil from each cargo tanks and to clean up such tanks whilst an independent surveyor proceeds to a confirmation procedure whereby said surveyor checks out whether any remaining oil exists by putting a stick in each cleaned up tanks and opening up the hatch cover of the tanks or the top place of the tanks to confirm the cleanness of oil. Such procedure shall be done through discussion by the ordering party, contractor and the independent surveyor all together with a flexible application.

• Korean Journal of Microbiology
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• v.39 no.1
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• pp.8-15
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• 2003

To evaluate the effects of slow release fertilizer and chemical dispersant on oil biodegradation, mesocosm studies were conducted on sand seashore. The rapid removal rates (85%) of aliphatic hydrocarbons and the simultaneous decreases of n-$C_{17}$/pristane (69%) and $n-C_{18}/phytane$ (61%) ratios by the addition of slow-release fertilizer (SRF) within 37 days of experiment indicated that SRF could enhance the oil degrading activity of indigenous microorganisms in sand mesocosm. Although the growth of heterotrophic bacteria and petroleumdegrading bacteria in the mesocosm treated with $Corexit 9527^{R}$ was stimulated, the biological oil removal based on the ratios of $Corexit 9527^{R}$ and $n-C_{18}/phytane$ was inhibited. Removal rates of aliphatic hydrocarbons (56%), and n-$C_{17}$/pristane (27%) and $n-C_{18}/phytane$ (17%) ratios by the addition of chemical dispersant $Corexit 9527^{R}$ were similar or lower than those values of control (50, 60, 46%), respectively. The biodegradation activity, however, when simultaneously treated with SRF and $Corexit 9527^{R}$, was not highly inhibited and even recovered after the elimination of chemical dispersant. From these results it could be concluded that the addition of SRF enhanced the oil removal rate in oligotrophic sand seashore and chemical dispersant possibly inhibit the oil biodegradation. Hence, in order to prevent the unrestrained usage of chemical dispersant in natural environments contaminated with oil, the National Contingency Plan of Oil Spill Response should be carefully revised in consideration of the application for bioremedaition techniques.

• Journal of Korean Port Research
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• v.14 no.3
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• pp.373-378
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• 2000

Oil spill in sea water is the most frequent and significant problem of marine pollution. As an early detection sensor of the pollution, an activated carbon coated quartz crystal is prepared and examined for its performance of detection sensitivity and stability. Powdered activated carbon and phenol resin is coated on the surface of the sensor and the sensor is baked for an hour. Adsorption of acetone dissolved in water and salt water is measured using frequency shift of quartz crystal at different concentrations of solute material. The outcome indicates that the sensor preparation is adequate and the measurement of solute concentration is stable and sensitive enough to be implemented on the monitoring of solute concentration is stable and sensitive enough to be implemented in the monitoring of organic pollution of sea water.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2003.05a
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• pp.769-771
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• 2003

고분산성을 이루는 물질들이 석영(quartz)을 바탕물질로 하여 기계-화학적 반응 기술을 이용하여 제작하였다. 반응의 처리 조건과 이후의 응용에 따라서 기계-화학적 반응을 이용하여 제작한 물질은 자기 특성, 유전체 특성, 전기적 특성을 동시에 나타냈다. 부착성 복합물질의 특징을 고려하여 세그네토 마그네틱스(Segneto-magnetics)로 분류 제작된 자기-전기적 분말은 유전체재료 특성을 나타냈다. 특히, 석영 표면에 하나 또는 그 이상의 이질 화합물 층이 10∼50nm 두께로 합성되어, 자기ㆍ전기적 특성을 나타냈다.

• Proceedings of KOSOMES biannual meeting
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• 2006.05a
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• pp.93-102
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• 2006

효율적인 방제전략 수립 지원시스템 개발의 일환으로 환경민감정보 기반 실시간 유출유 확산예측 시스템과 피해위험도 예측시스템을 연계한 해양오염 방제지원시스템을 개발하였다. 실시간 유출유 확산예측시스템에서는 실시간 바람과 실시간 해수유동을 기반으로 유출유의 이동을 계산하고, 유출유 특성에 따라 해상 유출유의 풍화작용을 모델링하여 유출유의 잔류량 및 확산분포를 계산한다. 유출유 확산 예측의 실시간 바람은 국립환경연구원의 실시간 기상모델 결과를 FTP를 이용하여 실시간으로 연계하여 활용하며, 실시간 해수유동으로서 조류는 수치모델결과와 검조소 관측결과의 결합을 통해 실시간 조석을 예측하는 CHARRY (Current by Harmonic Response to the Reference Yardstick) 모델을 이용하여 예측하고, 실시간 취송류는 바람과 취송류간의 상관관계와 반응함수를 이용하여 예측한다. 실시간 해수유동을 따라 이동하면서 풍화되는 유출유의 풍화작용은 유출유 특성에 따라 결정된 감소율을 적용하여 모델링한다. 본 시스템은 이와 같은 정보를 ESI(Environmental Sensitivity Index) 및 방제자원 정보와 통합하여 종합적으로 제공함으로써 방제전략 수립을 지원한다.

• Proceedings of the Korean Institute of Navigation and Port Research Conference
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• 2013.10a
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• pp.387-389
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• 2013

In order to determine the collision risk, the probability estimation is very important part for accurate risk estimation. Recently, the collision risk at the Busan North Port is studied for making the risk map by authors. The result has been found some connections with previous collision places. For more precise estimation, the probability calculation is necessary. Recently the Bayesian matrix is mainly used for calculating the probabilities. Also considering the oil spill risk with tankers, ships' speed, relative angle and ships' size are key aspect whether breaking the double hull or not. This research presents the way of estimating the probabilities not her research and also the collision risk probability considerations for small divided areas.