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BLM Windlass - Electric System Overhaul During Dry Docking


ALATAS specializes in Anchor Winch and Mooring Winch repairs, Make Brissonneau & Lotz Marine (BLM). The windlasses on these large container vessels are electric drive equipped, and after 10 years in operation, the BLM control system is starting to have more frequent breakdown and intermittent faults. The owner engaged ALATAS to carry out a pre dry-docking survey and to come up with a repair plan and scope of work to fully overhaul the Windlasses, electric drive and control system.

Alatas deployed our BLM Deck Machinery specialist and control system engineer to carry out the following electrical repairs:

1.         Provide 1x BLM specialist engineer ex Alatas Singapore and 1x Technician ex Alatas Shanghai
2.         Supply and replace contactors on Anchor winch & Mooring winch control panel
4.         Supply and replace carbon brushes on winch motors, polish commutator surface
6.         Service Motor resistor units and align cooling fins
7.         Troubleshoot Mooring control panel 3 & 5
8.         Carry out comprehensive function testing after overhaul
9.         Carry out Anchor drop testing.
10.       Carry out pull load testing of mooring winch


Condition of V & D contactors.

Replacement of contactor of V & D for Windlass no2 & replacements of on poles contacts for V & D MC on Windlass no1.



All MC for CRV,G & GV contact poles were replaced

Replace new contactors



All motor brakes were removed, inspected, checked & clean.

Brake pads thickness measured to be within spec.



All corbon brush check & measured & replaced as required.

Resetting of band brake green zone setting on the Band brake cylinder unit



Removing back end of motor for carbon brush & commutators inspection.

Polishing all commutators surface.



Meggar test all motor coils insulation after service.

All motor brakes were removed, inspected, checked & clean.



Rebending of brake units plates

Condition of D & V contactors.



Removing of contact poles, cleaning of MC before installing new contact poles.

Nes Contact poles installed.



New rign plate fabricated by Shipyard installed & fitted onto M2

Motor brake pads was also replaced.








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