• Title/Summary/Keyword: sea transportation

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Dynamic Analysis of Spar Hull Transportation

  • Lee, Jong-Hyun
    • Journal of Advanced Marine Engineering and Technology
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    • v.35 no.6
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    • pp.867-873
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    • 2011
  • The transportation of a truss-spar hull from a transport barge of 6000 ton topside module on the spar hull is investigated in the present study. Two possible routes from a fabrication yard in Teeside, England to the Gulf of Mexico are considered in the paper. The results of motion responses of the transport barge obtained from a spectral analysis and the limiting criteria of sea fastening, deck wetness and lateral acceleration are compared and the route selection is discussed. Long-crested waves and short-crested seas as well as the joint probabilities of significant wave heights and wave periods in different sea areas are considered. Generally speaking, the results for long-crested seas are higher than those for short-crested waves.

A Study on the Atmospheric Dispersion of Odor Emitted from Banwol/Sihwa Industrial Complex in Ansan Area (반월, 시화공단 악취물질의 안산지역 확산 연구)

  • Song, Dong-Woong;Song, Chang-Keun;Kim, Cheol-Hee
    • Journal of Environmental Impact Assessment
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    • v.12 no.5
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    • pp.323-340
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    • 2003
  • There have been persistent civil appeals in Ansan area against the odor and aerosols emitted from nearby Banwol/Sihwa industrial complex. A fundamental solution for the good air quality has not been addressed yet in spite of the continuous counterplan to reduce odor emission. A systematic and scientific study is needed to examine the reason for the odor episode and to predict the impact coverage of odor pollution. An approach by computational simulation is considered to be adequate to investigate the transportation and the dispersion processes of air pollutants blown by sea breeze toward the coastal city, Ansan. This study has employed various dispersion models to simulate the transportation and the dispersion processes of odor pollutants by a local circulation between land/sea breeze using the data set of emission rates of odorous species from the Banwol/Sihwa industrial complex.

Salt and Sand Transport from Aral Sea Basin

  • Lee, Kwi-Joo;Shugan, Igor;Park, Na-Ra;Begmatov, A.;Mamatova, N.T.;Lee, Chung-Hwan
    • Journal of Ocean Engineering and Technology
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    • v.19 no.3
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    • pp.47-53
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    • 2005
  • Model for dust and salt transportation from the dried bottom of the Aral Sea is suggested. Theoretical analysis is based on the turbulent diffusion equation for the averaged function of passive impurity concentration. One-layer model of the atmospheric boundary layer is assumed. Impurity precipitation rates are calculated as the functions of the particle size and the distance source of particles. Analytical solutions for the point and two-dimensional sources of impurities are found. Model calculations for salt and sand transport from the Aral Sea basin are made on the basis of 2D source model with a constant intensity.

A Development of Catamaran type Powerboat Applicable to Leisure and Transportation for a Short Distance in the Sea (해상레저 및 근거리 교통수단으로 활용 가능한 쌍동형 파워보트 개발)

  • 강성욱;임용범;정우철;박찬원
    • Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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    • 2001.05a
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    • pp.60-64
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    • 2001
  • This paper describes the development of catamaran type powerboat applicable to leisure and transportation in the sea. Recently, the increasing prosperity of the leisure population has resulted in an increased popularity and need for recreational equipment such as water leisure powerboat. To satisfy the popularity and the need, catamaran type powerboat is developed applicable to leisure and simultaneously, as a means of tranportation for a short distance in the sea through the design using 3-Dimensional modeling method and experiments in circulating wate channel.

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Railway strategies for introducing intelligent transportation system (철도분야 지능형교통체계 도입 전략)

  • Lee, Jun;Moon, Dae-Sub;Eom, Jin-Ki;Kim, Dong-Hee;Jin, Il-Kyoung
    • Proceedings of the KSR Conference
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    • 2011.05a
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    • pp.1544-1549
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    • 2011
  • Transportation Efficiency Act of 2009 System National Integrated Transportation System Efficiency Act and the revised Road Traffic in the center of the Intelligent Transportation Systems rail, sea and air transport sector is expanding in various areas to promote business and Industry is planning to. Accordingly, the introduction of Intelligent Transportation Systems Outlook and Direction of the railway sector and to provide a comprehensive introduction of Intelligent Transportation Systems rail sector has raised the need. In this paper, the introduction of Intelligent Transportation Systems rail sector strategy is presented as follows. First, the rail users a convenient rail-centric information system used. Second, the reliability and value-added operating system built for the creation of high-tech rail. Third, crime and accidents are implemented in a safe railway. The results of this paper, the railway sector through the national Intelligent Transportation Systems to develop and introduce strategies to provide operational direction is expected to be present.

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Telemonitoring System for Protecting Aquaculture Farms Using Wired and Wireless Communications Network (유무선 통신망을 이용한 양식어장 보호용 원격감시 시스템의 개발에 관한 연구)

  • Jeong Jung-Sik;Park Sung-Hyeon;Jong Jae-Yong;Ahn Young-sup
    • Proceedings of KOSOMES biannual meeting
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    • 2004.11a
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    • pp.151-156
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    • 2004
  • In Korea, aquaculture is one of major incomes for fishing households and amounts to $50.6\%$ of total incomes for domestic fishery. The loss of aquaculture farm due to thievery at sea increases every year. In this research, we propose the system model for development of telemonitoring system, which protects aquaculture farms. For the proposed system, general requirements are described. Our system is cost-effective when it is applied to domestic fishing households.

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A study on Maritime Safety Audit(MSA) and it's Guideline (해상교통안전진단제도 및 기술기준 연구)

  • Cho, Ik-Soon;Kim, Kyoung-Mi;Jang, Woon-Jae
    • Journal of Korea Ship Safrty Technology Authority
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    • s.28
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    • pp.36-45
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    • 2010
  • While the vessel become bigger and high speed, navigational passages become narrow due to an enlargement of all sorts of new ports, sea-crossing bridges and anchorages, leading to the high probability of marine accidents. Furthermore, a constant increase in the maritime transportation and the traffic volume on the sea led to a variety of sea traffic environments and it is a trend for the demand for the sea transportation environment to increase steadily. At this point of time, the Ministry of Land, Transport, and Maritime Affairs introduced the Korea Maritime Safety Laws evaluating the degree that The Safety Audit System for maritime transport, which evaluates the degree that all kinds of port facilities installed temporarily or installed into navigational passages, and the installations and repair constructions of S.O.C. facilities affect ships' traffic safety, was introduced through Korea Maritime Safety Laws and went into effect from November 28th, 2009. This study was performed to introduce an outline including the concept and purpose of the Maritime Safety Audit(MSA) system for maritime transport and the technological guidelines for scientific and standardized enforcement, thereby analyzing the system.

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Influence Factors for the Safety Assessment on the GPE Blocks during On-shore Transportation (GPE 블록의 연안운송시 안전성 평가를 위한 영향인자)

  • Kim, Sung-Chang;Hong, Ki-Sup;Shin, Dae-Kyun;Yu, Byeong-Seok;Kim, Kwan-Hong;Suh, Yong-Seok;Paeck, Se-Jin
    • Journal of the Society of Naval Architects of Korea
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    • v.46 no.6
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    • pp.595-602
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    • 2009
  • Great number of ships has been built by Korean Shipyards since early of 2,000 due to the expanding worldwide trade. Most of shipyards have enlarged the weight of erection block and many blocks have been assembled in block fabrication factories outside the shipyards to reduce the shipbuilding period. Especially, Giga blocks that exceed 2,000 tons are often assembled by the block fabrication factories outside the shipyard. Generally, the blocks are transported to building dock in shipyard by towing barges. Accident can be occurred during the sea transportation and it may bring about not only the delay of delivery but also a disaster on the ocean environments. Transportation condition of GPE (Grand Pre-Erection) block differs from the ocean going conditions of marine vessels. Special consideration should be included before transportation work in order to guarantee the safety of GPE blocks and barge carriers. In this paper, several examples, which have been investigated to set up the safety standard of transportation of the GPE blocks on coastal routes, are introduced. For the barge transportation on coastal sea route, the design criteria are discussed, considering the design wave, the acceleration induced by wave, structural strength, and the fixture condition of blocks.

Data Analysis of International Joint Road and Sea Transportation Tests Under Normal Conditions of Transport (국제공동 육해상 정상운반시험의 데이터 분석)

  • Lim, JaeHoon;Cho, Sang Soon;Choi, Woo-seok
    • Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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    • v.18 no.2_spc
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    • pp.275-289
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    • 2020
  • In 2017, multimodal transportation tests for evaluating road, sea, and rail transport were performed by research institutes in the US, Spain, and the Republic of Korea. In this study, acceleration and strain data determined through road and sea tests were analyzed. It was investigated whether the load generated for each transport mode was amplified or attenuated according to the load transfer path. From the results, it was confirmed that the load transfer characteristics differed according to the transportation mode and loading path. The effects of strain determined through each test on the structural integrity of the spent nuclear fuel were also investigated. It was found that the magnitude of the measured strain had a negligible effect on the structural integrity of the spent nuclear fuel, considering its fatigue strength. The results for the acceleration and strain data analyses obtained in this study will be useful for scheduled domestic transportation tests under normal transport conditions.