Safety Flash
Power management system dynamic positioning (DP) incident
Power management system dynamic positioning (DP) incident
- IMCA
- Safety Flash
- IMCA SF 07/02
- DivingEmergency ResponseMachinery and EquipmentMarine Operations
- Loss of station keeping
- Dynamic positioningSaturation diving
- Emergency responseFunctional testingIndependent audit and verification
- Marine industry
- SubseaVessel
Summary
A power management fault interrupted stern thruster operation during saturation diving, causing a DP vessel to leave its intended position. Divers returned to the bell and were recovered. The flash examines inadequate control-card segregation and an unidentified single-point failure, recommending reconfiguration, electrical protection, independent review and FMEA validation trials.
Classifications: Loss of station keeping; drive-off; drift-off.
Classifications: Dynamic positioning; DP; DP operations.
Classifications: Saturation diving; sat diving.
Classifications: Emergency response; emergency preparedness.
Classifications: Functional testing; function test.
Classifications: Independent audit and verification.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Subsea; underwater worksite.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
A power management fault shut down thrusters during diving operations, causing loss of position and requiring controlled recovery.
IMCA SF 07/02. Themes: diving, emergency response, machinery and equipment, marine operations.