Specialized contractor Collett & Sons put its new Enerpac hydraulic jack-up type lifting system to work on an industrial installation project in the UK.
The 1,000 tonne capacity JS-250 is a multi-point synchronous lifting system with self-contained hydraulics. Collett used it to install a 100 tonne Siemens steam turbine type SST-600 and a 60 tonne generator at a new incinerator plant in Hull, north east England. Space restrictions were a challenge where the four tower system lifted the loads to a height of 4.5 metres before skidding them 14 m into position.
The JS-250 lifts in increments as square steel “barrels” are stacked together to form lifting towers. Collett brought the components in on its self propelled modular transporter (SPMT) and positioned them above the jack-up units at each corner of the load.
Lincoln Collett, Collet & Sons Ltd technical director, commented, “The Enerpac jack-up system is perfect for this kind of job. We considered a gantry, but there was no space to move the gantry forward to position the turbine and generator. The combination of the jack-up’s synchronised lift and skidding worked very well.”