- Easily used by ships maintenance staff right out of the box.
- Instant indication of condition for motor bearings, gears, compressors, slewing rings, hoists, winches etc.
- Plan maintenance and have the spares available on time. Minimise off-hire and demurrage.
A Safe Harbour for Your CM Requirements
Podded Drives and Thrusters
Exterior drives and thrusters are subject to thrust, shear and torsional forces that place great strain on the assembly. Permanently installed Holroyd AE sensors have been used on many such installations to signal potential damage and allow for a planned intervention. Using wireless links it is possible to monitor azimuthing drives without the need for complex wiring. The figure shows a bridge display our sensors on a particularly troublesome installation.
(As a rider to this statement, this issue was a "first of kind installation", retrofit design improvements have now proved successful for the manufacturer.)
See also other Kittiwake products such as ThrusterSCAN developed for Thruster drives in offshore applications.
Offshore Supply Ship Gearbox
MHC was used by one offshore vessel fleet operator as their default CM monitoring tool. On one vessel there was an increase in Distress® on the starboard PTO Gearbox. The gearbox had been in reliable service for 4 years. Measurement frequency was increased and showed a deterioration over the next 6 months until a pre scheduled maintenance period. As the deterioration was only gradual, the equipment was deemed fit to remain in service until the next scheduled maintenance.
Maintenance revealed clear damage to the thrust bearing as shown in the photograph. The bearing was replaced during just one day out of service. Compare this with an unplanned stoppage, estimated to cost around $150,000.
The anchor recovery winch on an offshore vessel has proven unreliable in service. Although greased as per manufacturers recommendations, operators could hear an intermittent noise. VA was used to isolate the cause but proved ineffective due to background noise for the generators on the deck below. A visiting maintenance engineer tried his MHC MEMO instrument taking only two measurements.
- Port side Distress® = 4
- Starboard side Distress® = 26
Failure of this bearing at sea on a previous occasion resulted in an off hire loss of $100,000.
Click to enlarge