Marine Order 32 (Cargo handling equipment) 2016

If a crane or derrick is tested with movable weights, after the movable weights are hoisted:

the crane or derrick must be swung at slow speed to each end of its slewing arc; and

for a jib crane with a travelling capability - the crane must be moved the entire length of its travelling track at slow speed with the jib extended to the maximum working outreach perpendicular to its direction of travel on one side of its travelling track, and again, with the jib similarly extended to the other side; and

for a bridge or gantry crane with a travelling capability - the crane must be moved the entire length of its travelling track with the hoist at one end of the traversing span, and again, with the hoist at the other end; and

for a bridge or gantry crane without a travelling capability - the crane must be made to move the weights from one end of its traversing span to the other; and

for a derrick crane - the derrick crane must be luffed at slow speed to its maximum operating angle measured from the horizontal plane, then returned at slow speed to its minimum operating angle.

If a derrick or crane is tested with a spring, hydraulic balance or similar appliance, the proof load must be applied in its midship position for at least 5 minutes at the minimum working angle at each end of its working arc.

A crane must undergo an operational test, including testing of its limit switches, using its full range of speeds and by hoisting a load at least equal to the SWL while carrying out all motions occurring in normal operations including hoisting, luffing, slewing and travelling.

For testing derrick gear in union purchase, the proof load must be manoeuvred, with the gear rigged over the opposite side of the ship, throughout the working range of the gear, rigged over one side of the ship and hoisted to a level that:

makes the angle between the runners close to but less than 120°; or

a lesser angle mentioned in a drawing mentioned in Schedule 6,

After testing the crane or derrick:

it must be examined by a competent person for damage or permanent deformity; and

the overload limit switches must be reset.