The container vessel is equipped with 3 deck cranes make MacGREGOR, type GL 4528-2S with a capacity of SWL 45t at 28m radius.
The vessel was scheduled for its 5 yearly cargo gear survey and overload testing is required with a proof load of 50T (i.e. proofload = SWL + 5T). ALATAS was called to carry out the annual lifting gear survey and to arrange 50T waterbag and conduct the overload test at Singapore Anchorage.
Our class certified crane inspector however noted a damaged hoisting rope on crane 1, that had to be changed prior to the load test. Alatas arranged it's rigging gang, rigging equipment & rope stand and carried out the wire rope change-out.
ALATAS then carried out the load test, including issuing the load test certificate and detailed load test protocol. Alatas scope of work for marine crane load testing and recertification includes the following, carried out by a multi-disciplined crane service engineer and class approved crane inspector:
Following tests were carried out:
Nr. Crane | SWL x Radius | Proof Load |
---|---|---|
Crane 1: | 45T x 28M | 50.0 T (Waterbag) |
Crane 2: | 45T x 28M | 50.0 T (Waterbag) |
Crane 3: | 45T x 28M | 50.0 T (Waterbag) |
Crane 4 (Aft) | 10T x 22M | 12.5 T (Pull Load Test) |
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