• Title/Summary/Keyword: YT Pooling

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Effective Operation Strategies for Pooling Yard Tractors m Container Terminals (컨테이너터미널에서 야드 트랙터 풀링시스템을 적용한 효율적인 운영 전략)

  • Shin, Jae-Young;Kwon, Sun-Cheol
    • Journal of Navigation and Port Research
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    • v.33 no.6
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    • pp.401-407
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    • 2009
  • The improvement in the terminal productivity plays a key role for container terminals to be more competitive. The productivity of yard tractors(YT) is one of the most important factor accelerating the terminal productivity. Thus, YT pooling system is newly introduced in container terminals for increasing the YT productivity. Recently, the terminals in Korea tend to adopt YT pooling system. This paper proposes the important decision factors for YT pooling work space and several types of formulations according to states of container terminals.

A Study on RTLS Technology based YT Dynamic Operation for Efficiency of Container Terminal (컨테이너터미널 운영효율성을 위한 RTLS 기반 YT Dynamic Operation 모델)

  • Shin, Jeong-Hoon;Chang, Myung-Hee;Yu, Song-Jin
    • Journal of Navigation and Port Research
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    • v.32 no.5
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    • pp.369-377
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    • 2008
  • Interest in high productivity and streamlined operation is growing amid a heated competition between ports and mega size vessel oriented operation. It becomes clear that terminals that operate YT(Yard Tractor) for transportation in container yard have less efficiency in operation and cost comparing terminals functioning AGV(Automated Guided Vehicle) system. To offset disadvantages arising out of YT operations, continual efforts (e,g YT pooling operation) were taken place for the last decade, but the result has not been fruitful; YT pooling operation still has a problem in that it cannot read individual YT's actual location. This study suggests 'YT dynamic operation model'- a practical application of RTLS(Real Time Location System) technology which will solve YT pooling operation problems.

Real-Time YT Tracking and Analysis of Yard Congestion in Pooling Operation Based on RTLS (RTLS기반의 풀링운영에서 실시간 YT 추적과 장치장 혼잡도 분석)

  • Ha, Chang-Seung;Seo, Moon-Kyo
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.11 no.7
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    • pp.2603-2609
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    • 2010
  • Currently at port, various trials about the improvement of operating method for raising operation efficiency of transferring equipment are made, but if the delay is occurred to quay crane due to individual team method in YT operation, the problem which even arranged YT should stop the work. Therefore, this study installed wireless location determining device within yard and measured the location of YT with real-time. Also, in order to raise the location determination effect, we converted operating method into pooling operation method and arranged YT. Through this study, we can trace the movement of YT with real-time and the work control method which anlayzes and evaluates congestion of yard objectively is prepared.

A Study on the Application of Transfer Equipment Pooling Systems for Enhancing Productivity at Container Terminals (컨테이너터미널에서 생산성 향상을 위한 이송장비 풀링시스템 적용방안에 관한 연구)

  • Cha, Sang-Hyun;Noh, Chang-Kyun
    • Journal of Navigation and Port Research
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    • v.38 no.4
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    • pp.399-407
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    • 2014
  • Due to the increase of container terminals, as the volume of terminals become distributed, the competition of preserving existing volume and inviting new volume are becoming fierce, and various ways for processing terminal volume and inviting volume are being sought. Container terminal efforts to maximize efficiency in order to improve the volume handling capability and productivity by both expansion of the latest equipment and development of the latest terminal system. There are a variety of factors that influence the improvement of productivity at container terminals. Among them, in the case of yard transfer equipment, if it were to convert from the method of a Yard Tractor(YT) being fixed allocated to a certain Gantry Cranes(GC) to a Pooling System that processes in a method that properly distributes and allocates a Yard Tractor(YT) to multiple Gantry Cranes(GC), the terminal productivity and the fusibility of YT may be increased. The KPI which is an indicator for the productivity at container terminals is GC productivity and since GC productivity cannot exceed the speed of physical GC operations, a Pooling System is applied to increase productivity which its meaning and effect is massive. Here in the Report, we produce the Pooling Algorithm system to improve the efficiency of the transported equipments in container terminal which is actually applying for this method and have compared Non pooling system with Pooling system in the fields. By introducing a transfer equipment pooling system and enhancing the productivity compared to other terminals, it may become an essential factor for increasing the continuous service quality and profitability in terms of terminal business.

The Effect Analysis on the Container Terminal Productivity according to Combination of YT Pooling and Dispatching Rules (이송장비 풀링(Pooling)과 우선순위 규칙(Dispatching rule) 조합에 따른 컨테이너 터미널 생산성 효과분석)

  • Chun, Seoyoung;Yoon, SungWook;Jeong, Sukjae
    • Journal of the Korea Society for Simulation
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    • v.28 no.3
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    • pp.25-40
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    • 2019
  • Today, container terminals are fiercely competing to attract an increasing number of containers. As a way to improve terminal productivity, this study proposes two dispatching rules for yard truck allocation priorities. First, Multi-Attribute Dispatching Rule(MADR) is an allocation method to calculate the weighted sum of multiple factors affecting container terminal productivity and priority them. Especially, the workload of the quay crane was considered one of the factors to reduce the residence time of the ship. Second, Cycling Dispatching Rule(CDR) is the effective way to increase the number of double cycles that directly affect terminal productivity. To identify the effects of combinations of pooling and dispatching, a comparative experiments was performed on 8 scenarios that combined them. A simulation environment has been developed for experiments and the results have demonstrated that the combination of terminal level pooling and Multi-attribute Dispatching could be an excellent combination in KPIs consisting of GCR and delayed departure of ships, etc.

The Operation of the Yard in a Terminal (터미널의 장치장 운영)

  • Ahn, Eun Yeong;Kang, Byoungho;Kang, Jaeho;Ryu, Kwang Ryel;Kim, Kap Hwan
    • Journal of Intelligence and Information Systems
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    • v.12 no.3
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    • pp.47-65
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    • 2006
  • These days, the number of automated container terminals is increasing to encourage the productivity of the container terminal inside and outside of the country. So far, there have been a lot of researches on the operating one type of equipments in a container terminal. However, there is still room for further improvement as none of equipment works itself but cooperate each other to finish a job, which means synchronization among the equipments is necessary. Among lots of equipments in a terminal, this paper concerns with the operation of ATCs (Automated Transfer Crane) and YTs (Yard Truck). The purpose of this paper is to find the efficient heuristic methods for operating ATCs and YTs that can set up a schedule in a real time. Moreover, using simulation this paper shows the efficient stacking strategy to decide the location of containers to be put and the proper selection range of YTs.

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Efficient Yard Tractor Control Method for the Dual Cycling in Container Terminal (효율적인 듀얼 사이클을 위한 야드 트랙터 통제 방법)

  • Chung, Chang-Yun;Shin, Jae-Young
    • Journal of Navigation and Port Research
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    • v.36 no.1
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    • pp.69-74
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    • 2012
  • Recent global supply chain, improving the efficiency of container shipping process is very important. In the overseas shipping of goods, the voyage of super containership is common to overcome amount of increasing cargo. Thus, container terminal managers make an experiment on the double cycle and dual cycle operation, which ship loading and unloading were carried out simultaneously, for maximizing the productivity of quay side. Yard Tractors(YTs) pooling methods also are introduced for increasing the efficiency of assignment of YTs. In this paper, we analyzed the efficiency of dual cycling through comparing existing pooling methods with the modified method for the dual cycling. We developed a simulation model using simulation analysis software, Arena. The result of experiment shown that the more dual cycling don't always increase the gross crane rate(GCR), which means productivity of quay cranes(QCs) per hour.

Development of Infrared-Ray Communication System for Position Recognition of Yard Tractor in Container Terminal (컨테이너터미널 내의 야드 트랙터 위치인식을 위한 적외선 통신시스템 개발)

  • Hong, Dong-Hee;Kim, Chang-Gon
    • Journal of Digital Convergence
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    • v.11 no.1
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    • pp.211-223
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    • 2013
  • In Korea, the location of yard tractors is figured out in real time by using RFID system in container terminals. However, even though the location recognition of RFID system works fine when transfer crane is in yard operation, there are some problems when container crane is in ship operation. That is because yard tractors come one by one to each transfer crane in an order, but yard tractors come in 4 lanes to the container crane, which makes the system impossible to recognize each yard tractor separately. Therefore, we developed the infrared-ray communication system which can recognize yard tractors accurately in not only in the yard operation of transfer crane but also in the ship operation of container crane in same way in this study. The result in this study showed constant number of recognition, and the range of recognition measures 5.7m in 25m distance. The range of recognition shown in this study is enough to recognize each yard tractor passing under container crane separately.