Analyse van een stortgoedterminal door middel van modelvorming en simulatie (summary)

Delft University of Technology

Faculty Mechanical, Maritime and Materials Engineering Transport Technology / Logistic Engineering

N.J. Soeteman Analyse van een stortgoedterminal door middel van modelvorming en simulatie. Masters thesis, Report 98.3.LT.5026, Transport Technology, Logistic Engineering.

Ertsoverslagbedrijf Europoort c.v. is a large scale transshipment company for dry bulk goods, founded in 1967. In the three decades of its existence the company has developed into a terminal where yearly approximateiy fifty million tons of iron ore are handled.

As a result of the large pressure of work, there is hardly any time availabie for the necessary maintaince of the machinery. Because of this a study has been performed in order to analyse the capacities of the terminal.

Modelling

At first a literature survey has been written, in order to find useful parameters used in earlier defined simulations. With the collected data and the results of research at EECV, a description of the terminal has been composed. Special attention has been paid to the machinery and the co-operation between the machines.

Based on these data a simulation model has been programmed with Arena. Simulation

In order to examine the bottlenecks and sensibility of the terminal several experiments have been carried out, in which the capacities and the driving-speed of the machinery have been varied.

After this the results of changes in the composition of the orderliste for the inner harbour have been examined, under different circumstances. All experiments have been carried out for both low and high tide, in order to collect data about the influence of tide.

Conclusions

It appears that the results of the experiments considering changes in capacities of the machinery only result in minor fluctuations of the total production of EECV. The composition of the orderlists on the contrary appears to have great influence on the production of the terminal. Better division of the orders in the lists results in substantially higher productions for the seaside as well as the inner harbour.

The feasible increase of output of 15% indicates the possibility of a higher occupation of the machinery. When the machinery does work at higher occupation, the inner harbour will finish the loading carlier, which results in timesaving. The remaining time can now be used for the maintaince of the machinery.

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