Safety Flash
Near-miss: Release of trapped pressure after ROV dive
Near-miss: Release of trapped pressure after ROV dive
- IMCA
- Safety Flash
- IMCA SF 26/16
- IsolationMachinery and EquipmentPressure Systems
- Pressure systems
- Inspection and maintenance
- Remotely operated vehicle
- Evacuation, escape and rescueExclusion zonesPressure reliefRisk assessment
Summary
An incorrectly oriented ROV tooling frame released trapped pressure when a crew loosened an Allen bolt during dismantling. The supervisor evacuated and cordoned off the area while pressure bled down naturally. Subsequent measures included reassessing risks, drilling cross-member holes, checking similar systems and marking correct frame orientation.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Remotely operated vehicle; ROV; underwater robot.
Classifications: Evacuation, escape and rescue; EER; escape and rescue.
Classifications: Exclusion zones; red zones; restricted access zones.
Classifications: Pressure relief; overpressure protection.
Classifications: Risk assessment; hazard assessment.
Summary
Trapped pressure was released while dismantling an incorrectly assembled ROV frame, prompting evacuation and equipment modifications.
IMCA SF 26/16. Themes: isolation, machinery and equipment, pressure systems.