The crane system needed to lift a large cage containing products from the floor above a 30 metre line of dipping tanks. It then needed to travel along the line and lower and release the cage into the tanks.
A free standing gantry system was installed with two cranes which could each carry a load of up to five tonnes.
Headroom was very tight so special twin hoist double girder cranes were designed with each crane having the twin electric chain hoists mounted in fixed positions
and suspended from brackets above the double girders.
Purpose made lifting frames were designed to be suspended from the hoists and to easily locate on the lifting lugs of the cages.