An interesting job, because the power pack is installed at the end of a crane boom as can be seen. In operation this boom is down in the horizontal position as shown, but the boom lifts up through 85° to be stowed away when the crane is not in use. This meant careful design as the power packs would be subject to a constant salt spray environment and shock loadings when the boom is raised and lowered.
We also had to be careful to ensure oil could not escape out of the breathers.

The entire system was designed, manufactured and installed by Ipswich Hydraulics.

The power pack is totally enclosed and water tight. Finish painted with 3 coats of 2 pack epoxy paint, to give a 15 year life span for the paint finish.

There are 4 off cylinders which provide 3 degrees of movement of the container being lifted, in addition to this an over load protection valve is mounted on each cylinder, capable of passing 2500L/Min. This allows the cylinders to collapse in 0.6 seconds over a stroke of 1500mm. This is a protection system for the crane, if the load being lifted got snagged up on a ship, then without this system, the ropes could brake or even worse the crane structure could get severely damaged.

The large diameter pipework was drawn on CAD, overlaid on the customers CAD drawings of the crane, then pre fabricated in large sections and pressure tested at our factory months before the cranes were even erected. It had to be done this way as time available on site was going to be short.

The pipework was also finish painted with 3 coats of 2 pack epoxy paint, to give a 15 year life span for the paint finish.

The whole contract for two crane sets was completed on time in 2001, with no problems.