Installation of two pieces of a kiln shell with an inner diameter of 5.6 m. The first part of the shell was replaced including a supporting ring that was put on the supporting shell and centered according to required tolerances during preassembly. A total weight of the part with the supporting ring was 135 tons. From this reason the largest mobile crane in the Czech Republic with a capacity of 700 tons was used.
The project was highly demanding due to a short deadline, only 14 days for the complete replacement. Particular parts of the shell were replaced step by step, the shell with the supporting ring was replaced first. Welding of joints on each of the shells was carried out on both the joints at the same time. Both the parts were replaced successfully, thanks to the perfect centering the total run-out of the kiln was reduced substantially. There was no work safety problem for the whole time of the replacement, all uplifts were carried out without any complications according to pre-specified procedures.
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