The tight lift was hindered by a high wall to the side of the 31000 that restricted its movement. The entire operation took less than two hours. Once airborne and upright, the 31000 took over and carried the load to its final location. The crane lifted the 55 metres tall cold box, which measure 9 by 9 metres, off a flat-bed trailer in a tandem lift with a 600 tonne Manitowoc 18000, which was also owned by Chunjo. The cold box is a self-contained processing unit that liquefies and purifies natural gas, and is one of the largest single components at the plant. In the same project, the 31000 has performed its biggest lift to date – a pick-and-carry lift of a 650 tonnes cold box. The crane made a series of 123 heavy lifts, first of it was a 250 tonnes load using 55 metres main boom and 60 metres luffing jib. The crane performed its first job at a plant operated by Posco E&C in Gwangyang, South Korea, where cutting-edge technology is making liquefied gas from low-grade coal. Manitowoc has built their largest crawler crane, 31000 with a lifting capacity of 2,300 ton. South Korea’s Chunjo Construction has taken delivery of the first unit Manitowoc 31000 in April 2013.
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