At OCI’s ammonia plant at Chemelot site in Geleen, the Netherlands, a special job was carried out mid-January. Wagenborg Nedlift was contracted to lift a fully dressed absorber column with a weight of 258 tons, 47 meter length and a diameter of 4,6 meters onto its foundation.
A challenging lifting job, because the lifting works took place next to an installation still in operation. Wagenborg Nedlift, Sitech, Stork and OCI therefore had various meetings in order to draw up a JSA document. One of the measures following the JSA (Job Safety Analysis) was that the top section of the main boom would be covered with heat reflective material, because there was a small risk that the plant’s flare would catch fire.
The 750 tons crawler crane LR1750 took care of the lifting job. The crane was equipped with 63 meters main boom, 134 tons counterweight and 220 tons super lift counterweight. The LTM1750 (750 tons mobile crane) assisted as a tailing crane to erect the fully dressed absorber carefully. Once the super lift counterweight tray was attached to the LR1750, the crawler moved slowly towards the foundation. After that, the accurate positioning onto foundation went smoothly.