The Heron was designed specifically for offshore renewables – with a second deck and extending platform capable of reaching the nacelle of a wind turbine.
Imagine installing or replacing gearboxes, generators, turbine hubs and blades – on foot and without the need for the large boom cranes. Wouldn’t that make operations easier – wouldn’t it be safer for employees?
Would you consider changing three blades in roughly the same time it takes to change one an operational efficiency?
And would you consider more productive up-time and less weather related downtime an interesting cost-saving opportunity?
The Heron concept is a jack-up with a second elevating deck and extending platform. The second deck raises at a speed of up to 2m per minute; it has a capacity of 500mT. The extending platform grabs the turbine with a soft capture collar, minimising differential sway, to provide a safe and stable working environment.
This second deck eliminates the need for large boom cranes, rope access and crew transfers via bump-n-jump boats. And it provides not only a greater deck area but 2 levels of working environment at different heights.
- Safe access for intervention operations – adjusting the height of the second deck creates a walk-to-work environment;
- The second deck acts as a payload elevator – it can self-elevate in wind conditions that prevent normal crane operations;
- Modular construction meaning tailored vessel sizes and capacities without major re-design costs;
- No AHTs are required, reducing the cost of mobilisation.
- Faster delivery of operations at extended height;
- Providing heavy maintenance activities including lifting in and out of gearbox, generator, turbine hub and blades without large boom cranes (and associated vessels and costs);
- Exchanging 3 turbine blades in around the same time it takes, using boom cranes, to rig-up and dismount a single blade;
- Providing a secure and protected working platform at nacelle height, removing the need for rope access;
- The soft capture system removes the differential relative motion of mast sway and JU sway and allows for a walk-to-work environment, removing the need for bump-n-jump access.
The Heron design was recognised as a finalist at the World Oil Awards 2016, in the category ‘Best New Horizon’ idea. View particulars and general specifications (March 2018) and GAs. (Opens as pdf.)
To find out more about how the Heron can meet your particular needs, call Iain Steven on 0141 354 7966.
Or come and meet us in person at these upcoming events.