200t handling capacity

Four J D Neuhaus type EH50 air operated monorail hoists have been supplied and mounted by Westcon Løfteteknikk AS of Bergen to the Maersk offshore rig Guardian.

They been specified for synchronised lifting and handling of an 18.3/4in 15,000psi BOP unit before and after drilling operations.

Two hoists are each mounted on twin parallel overhead rails; each hoist provides 50t load and 20m lift capacities for between deck operations.

Removable connector bars have been supplied for fitting between paired hoists on the individual rails to maintain a fixed working distance of 4060mm between the load hook centres. With the two sets of hoists operating together, a combined lift capacity of 200t is made available. The minimum horizontal travel distance of the trolleys with connector bars fitted is 14.81m. The maximum free travel without connector bars in place is 18m, with travel distance limited by pneumatic end switches on the hoist trolleys.