Overhaul of a steering gear HPU
Full recovery of the hydraulic power unit driving the rudder, with pump replacement and contamination brought back within specification.
Read the case studyPiping · Offshore
Flushing of high-pressure hydraulic lines
Contamination in a hydraulic system brought back within specification after repeated proportional valve failures.
Execution
The sequence applied and the engineering decisions taken
The order below reproduces how the work was actually carried out, including the points where the condition found required a change of scope.
- Samples taken and analysed at different points of the circuit to locate the source of the contamination.
- Acceptance criteria defined from the specification of the proportional valves installed.
- Sensitive components isolated and flushing loops installed.
- Flushing carried out in turbulent flow, with periodic sampling and the progress recorded.
- Complete replacement of the fluid and the filter elements.
- Overhaul of the filtration system, which had been sized below the real working duty.
- Report handed over with the measured progress and a recommended monitoring plan.
Comparison
Condition before and after the intervention
Drag the slider to switch between the two recorded conditions.
- Before
- Repeated proportional valve failures and filtration undersized for the working duty.
- After
- System within the specified cleanliness class, filtration resized and a monitoring plan in place.
Result
What the intervention delivered
The system reached the specified cleanliness class and the pattern of repeated proportional valve failures stopped. Resizing the filtration removed the condition that had been regenerating the contamination after every component change.
6
days on the job
4
cleanliness classes recovered
0
new failures in the following cycle
Photographic record
Job gallery
The photographic record forms part of the technical report handed to the client and feeds the equipment history.
Portfolio
Other completed projects
Transmission shaft manufactured by reverse engineering
Manufacture of a transmission shaft for discontinued equipment, worked up from the fractured component with no manufacturer drawing available.
Read the case studyFull overhaul of a mooring winch
Complete overhaul of a mooring winch with drum recovery, hydraulic drive overhaul and load testing.
Read the case studyTechnical support
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