There are various reasons for these requests, both technical and economic:
- Often, there is not sufficient room for conventional erection because the latest generation of unloading je ies built today are designed for the final requirement only.
- These jetties are only equipped with reinforced and load bearing railbeams which are insufficient to bear the weight of the mobile cranes needed for the erection, with heir heavy dead weight and support loads.
- New material handling plants end to have only a short con struction time in the overall programme, hich does not in clude for the erection of the handling equipment. The chen requires delivery to take place immediately after he jetty and downstream plant have been completed, followed by the shortest possible commissioning period.
- In existing material handling plants, delivery of fully assem bled ship unloaders is required in order that production can continue without interruption caused by conventional erec tion and to keep demurrage costs for ships to an absolute minimum.
Krupp Fordertechnik have been able to meet these requests in many cases and details of how hese were achieved, together with photographs of some of hese machines being trans ported, follow below.
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