Heavy lift shipping and offshore transport & installation contractor, Jumbo, is using Dyneema heavy lift slings to install offshore wind turbine transition pieces.

The transition piece lifting tool

The transition piece lifting tool

In total, the slings, from Lankhorst Ropes, will be used to lift and position 80 transition pieces from the Jumbo Javelin onto monopiles situated in the Yunlin Offshore Wind Farm, Taiwan.

Jumbo Javelin is a dynamically positioned, heavy lift crane vessel featuring two rotating mast cranes with a combined lift capacity of 1,800t. For this project, 1,600t was the combined lifting capacity with the use of the Jumbo fly jib, a modular crane extension, at a maximum outreach of 28m. The Lankhorst LankoForce slings are fitted to a lifting tool used to aid the correct positioning of the transition pieces weighing 450 tonnes. As the lifting and positioning tool features multiple slings, Lankhorst has manufactured the slings to tight tolerances of + / - 1.5%.

Made from HMPE Dyneema SK78 yarns, the LankoForce endless spliced sling (grommet) are 82mm diameter. The transition piece lifting tool will use six endless spliced sling lengths of 6.574 metre and 12 slings of 7.456 metre, depending on the size of transition piece.

By Jake Frith