Marine Propulsion: when a non-approved installation nearly compromised navigation
Context
A frequency drive in a marine propulsion system, vessel in operation, maximum criticality, the system responsible for moving the vessel. The equipment had been repaired in an approved facility, following OEM standards. However, the onboard reinstallation was carried out by a non-authorized company.
What happened
During operation, intermittent failures began to appear. A detailed technical inspection identified:
- Power busbars not torqued to specification
- High-resistance connection with progressive heating
- Partial deformation and melting of the busbar
- Onset of thermal degradation
The root cause
There was no failure in the equipment or the repair. The failure was in the installation: torque not checked, no calibrated tool, no post-installation technical validation and misalignment with the OEM manual.
In power systems, the bolt is not a detail. It is electrical structural engineering.
The DMG intervention
- Detailed technical inspection
- Torque correction to OEM specification
- Structural busbar assessment and electrical integrity analysis
- Restoration of safe operating condition
- Issuance of a formal technical report
Result
- System preserved
- Propulsion maintained
- Risk eliminated
- Compliance restored
Strategic question: who technically guarantees the complete cycle of your critical assets today? Are repair, installation, commissioning and traceability under one technical responsibility, or fragmented?
Technical governance
Don’t let the risk gap show up in the investigation
Start with a Site Assessment: we map your drive fleet, criticality and exposure. Then, the complete cycle under a single technical responsibility.