Delft University of Technology
Faculty Mechanical, Maritime and Materials Engineering
Transport Technology / Logistic Engineering

B.C. Bührmann Chemicaliëntransport in de 21ste eeuw.
Masters thesis, Report 2003.TL.6737, Transport Technology, Logistic Engineering.

The transshipped volume of chemicals in the Port of Rotterdam has decreased over the past years. Little attention has been paid to the sector and the competition of neighboring ports has increased. With the transport of chemicals by sea the precious chemicaltankers spend a disproportionately amount of time in the ports, where goods are transshipped. Consequently the transport capacity is exploited badly and the costs during a stay in the port are high.
The first objective of the research is to introduce solutions for the poor utilization of the transportation capacity of parceltankers and to reduce costs that are a consequence of the transportation. The second objective is reduction of the port time of the parceltankers.

Problem analysis
The current transport of chemicals has developed from the oil transport. The first chemicals were transported in converted oiltankers. The cargo's ownership was owned by only a few owners and loaded or unloaded at a single location in the port. Through the years the demand for chemicals has strongly increased and also the number of chemical types has increased as well as the number of locations, where chemicals are produced. To transport different types of chemicals and to pick them up at the correct place, the number of tanks on board of a ship became larger (parceltanker).
Due to all these aspects the following bottlenecks of current organization in chemical transport are recognized:
New concept
Compared with other sectors a new transport concept has been developed which contains the following main points
Central terminal
The central terminal has two important functions:
The central terminal must meet among other things the following criteria: By means of five criteria six lay-outs are developed and are evaluated. Next a choice is made from the six terminal lay-outs presented by means of an appreciation of the established criteria. The capital costs count in heaviest. The criteria are: danger of contamination, required space, accessibility for ships, used area, reception possibilities of future parcel tankers without transship equipment.

The handling of the parceltankers at a central terminal means to the cargo, which must be delivered at a terminal, an extra step in the logistical process. By means of a computermodel an analysis has been made to see if this additional cost has a payback in reduced port time of the vessel.

The following conclusions can be drawn:

Reports on Logistic Engineering (in Dutch)
Modified: 2003.08.05; , TU Delft / 3mE / TT / LT.