Friday, October 12, 2012

Monster Heavy Lift Crane Ready to Lift a Kilotonne of Freight Out at Sea

Liebherr Reveals latest Innovation
Shipping News Feature

GERMANY – WORLDWIDE - The first CAL 64000-1500 Litronic®, a heavy lift offshore crane developed by Liebherr-Werk Nenzing GmbH, is now ready for operation. The crane is installed on the ‘Innovation’, a vessel belonging to HGO InfraSea Solutions, which was christened in Bremerhaven on 3rd September. The machine is capable of lifting an astounding 1,500 tonnes of freight at a maximum working radius of 31.5 metres. Even at a working radius of almost 46 metres the crane is still capable of lifting 1,000 tonnes of cargo.

With this latest model Liebherr says it meets the increasing demand for high performing heavy lift cranes, widening its product range and strengthening its position as world market leader for cranes in the offshore industry. Within the last two years eight heavy lift cranes were delivered for the heavy lift jack-up vessel market throughout the world, five of them are Liebherr products.

The enormous size and weight of the heavy lift crane required special planning for production, transport and installation. First, the company’s own production facilities at Liebherr-MCCtec Rostock GmbH had to be adapted, i.e. the clearance heights and widths in the workshops and on internal site roads had to be enlarged. Then the crane was transported to Poland in several parts weighing up to 600 tonnes each for final assembly at the Crist Shipyard in Gdynia.

The CAL 64000-1500 Litronic® will first be used for the installation of offshore wind power stations in the North Sea wind park Global Tech I. The crane’s enormous lifting capacity of up to 1,500 tonnes enables the installation of over 5 megawatt strong turbines and rotors as well as the loading and subsequent safe installation of the heaviest foundations down to a maximum water depth of 50 metres. This reduces set-up times and so contributes to increased productivity. Another possible application is in oil and gas production where the crane can be used for assembly and disassembly of platforms and other structures.

With a boom length of 105 metres the crane is capable of a lifting height of over 120 metres above deck. A special component of the heavy lift crane is its slewing ring with an outer diameter of 13 metres and an inner diameter of 11 metres. The crane is designed as “Crane Around the Leg”, a design demanding special installation planning. The heavy lift crane is able to rotate 360° around one of the four jack-up legs of the vessel.

The unique assembly of the crane is thus closely co-ordinated with the completion of the jack-up vessel as the crane must be positioned before the vessel leg. The CAL 64000-1500 Litronic® is the first heavy lift offshore crane in the world to date to be built according to this design. The main advantage of the “Crane around the Leg” design is that despite the crane’s enormous size it can be positioned in a space-saving way and thus requires a relatively small obstruction area of only 12 metres.