Investigation Report
Transformer Short Circuits Caused Vessel Power Loss and Drift
10-28-2009 22:00 G32547 GC/945 Required Muster
- BSEE
- Investigation Report
- Unknown
- Electrical safetyLoss of station keeping
- Electrical workInspection and maintenance
- Emergency responsePre-use checks
- Upstream oil and gas
- Vessel
Summary
An investigation examines transformer short circuits during re-energisation following maintenance aboard Discover Deep Seas. Power loss disabled thrusters and steering, allowing drift of up to 83 feet and prompting crew muster. Moisture accumulation was identified as the most probable cause. Inspection recommendations address condensation heating, drying and insulation-resistance checks before re-energisation.
Classifications: Electrical safety; electrical hazards.
Classifications: Loss of station keeping; drive-off; drift-off.
Classifications: Electrical work; electrical maintenance.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Emergency response; emergency preparedness.
Classifications: Pre-use checks; pre-use inspection.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Vessel; aboard ship; onboard vessel.