Safety Alert
Vessel loss of position while diving in close proximity to a hydrocarbon facility
Vessel loss of position while diving in close proximity to a hydrocarbon facility
- NOPSEMA
- Safety Alert
- A484748
- DivingHuman FactorsHydrocarbon ReleaseMarine Operations
- Human factorsLearning from incidentsLoss of station keeping
- Diving operationsDynamic positioning
- Diver umbilicalOperator displays and control interfaces
- Alarm managementHuman-centred designSafety communication
- Marine industry
- Vessel
Summary
A diving vessel drifted over 40 metres after inadvertent deselection of its surge control disabled automatic positioning. A diver noticed his umbilical becoming taut. The alert examines vulnerable console layout, absent confirmation and ineffective excursion feedback, highlighting interface design and safeguards against unintended deactivation.
Classifications: Human factors; human performance; ergonomics.
Classifications: Learning from incidents; incident learning; lessons learnt; lessons learned.
Classifications: Loss of station keeping; drive-off; drift-off.
Classifications: Diving operations; diving; commercial diving.
Classifications: Dynamic positioning; DP; DP operations.
Classifications: Diver umbilical; diving umbilical.
Classifications: Operator displays and control interfaces.
Classifications: Alarm management.
Classifications: Human-centred design.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
The alert examines a dynamic-positioning control error that caused vessel drift while diving near a hydrocarbon facility.
A484748. Themes: diving, human factors, hydrocarbon release, marine operations.