Delft University of Technology
Faculty Mechanical, Maritime and Materials Engineering Transport Technology / Logistic Engineering
J.W. Pruisken Simulatie van het FAMAS Crane Feeding System.
Masters thesis, Report 98.3.LT.5054, Transport Technology, Logistic Engineering.
The transportation of goods in containers has grown immensely and subsequently the capacity of container vessels has also grown. Already there are container ships with a capacity of more than 7,000 TEU and it is almost certain that in the near future there will be ships with a capacity of at least 8,000 TEU.
Despite the increasing capacity of the container ships, there is still an aim for a maximum time-in-port of 24 hours. Therefore it becomes necessary to thoroughly analyse all processes on the entire terminal, even more so as the present maximum time-in-port already causes serious problems.
The project FAMAS (First All Modes, All Sizes) has been set out to design a modular terminal that will be able to handle all modes of all sizes efficiently. One of the FAMAS' projects pays special attention to the anticipated problems in the handling the jumbo container ships at the seaside of the terminal: the CRAFE System. The CRAne FEeding System introduces an elevated quay combined with a buffer stack.
This report describes the logistic part of the model of the CRAFE System. A logistic analysis was executed which gave insight in the flows within the CRAFE System. This was followed by a computer simulation of two out of the three possible concepts of the CRAFE System for which the simulation program ARENA was used. First of all it was investigated whether the CRAFE System is able to meet the needs of handling Jumbo Container Vessels with a capacity of 8,000 TEU. Secondly a number of sensibilities in the CRAFE System was analysed.
The CRAFE System as it is introduced in this report can function well. The time-in-pot of 24 hours will be met by concept A and B. Concept A has lower waitingtimes compaired to the concept B; 1.8 % to 8.7 % of the workingtime of the quaycranes. The reason can be found in the high capacity utilisation of the overhead travelling cranes of concept B.
The movement of AGV's will decrease with 11 % because of the combination of runs.
The time the containers needs to flow through the system takes ± 7.5 minutes. That's without the standing time in the storage. The optimal CRAFE System can only be established if there more cargo lists are available and the arrival times of the AGV's is known. Reports on Logistic Engineering (in Dutch)
