Crane installation 'HOS Ridgewind'

Hornbeck Offshore Services (HOS), USA contracted Albwardy Damen to install a used 70T NOV offshore crane combined with a 2.4 MW upgrade to the power generation and distribution systems.

Work carried out:

- fabrication of crane pedestal and boom rest (80 ton steel fab);
- in situ machining of pedestal connection flange;
- installation of crane pedestal, boom rest and the new crane;
- engineering and installation of power distribution for new crane in 40FT container;
- installation and hook-up of 2 additional generators of 1.25 MW each;
- carry out Inclining experiment.

The major steel fabrication works was to fabricate the pedestal and boom rest for the crane, install both the fabricated items on board the vessel.
Transition piece getting ready
Top can final welding
All three sections joined & painted, lifting to install on board
In-situ machining of the flange to correct the deformation from the welding
Mounting to the new pedestal
A 40 ft STD container was turned to power distribution module for the crane. 2 Nos. switch boards (690v & 480v), 2 Nos. transformers each 1000 kva, 2 Nos. transformers of 30kva each, 1 No. transformer of 20kva, 2 Nos. ROV panels were equipped in this PDM. The PDM was completely insulated with marine grade materials and necessary air-conditioning was provided.
Power distribution module taken shape
2 Nos. 1250KW NOV generators were supplied by the owners to power the crane. Generators installed on board.
Load testing of the crane