Investigation Report
Crush incident during work under diving bell on diving support vessel Wellservicer with loss of 1 life
Crush incident during work under diving bell on diving support vessel Wellservicer with loss of 1 life
- MAIB
- Investigation Report
- DivingLine of Fire
- Crushing and pinch pointsDropped objectsMechanical failureRisk management
- Diving operationsRigging
- Diving bellFall protection equipmentValveWinch
- Functional testingManagement of changePermit to workRisk assessment
- Marine industry
- Vessel
Summary
Investigates a fatal crushing accident aboard Wellservicer off Aberdeen during modification of its diving bell recovery system. A faulty hydraulic pilot valve prevented winch brakes applying, allowing the suspended cursor to fall. The report examines commissioning, project oversight, management of change, risk assessment and permit failures, alongside subsequent stakeholder actions.
Classifications: Crushing and pinch points; crush hazards; pinch points.
Classifications: Dropped objects; falling objects; DROPS.
Classifications: Mechanical failure; equipment failure.
Classifications: Risk management; risk evaluation.
Classifications: Diving operations; diving; commercial diving.
Classifications: Rigging; slinging.
Classifications: Diving bell; closed bell; wet bell.
Classifications: Fall protection equipment; safety harness; fall arrest equipment.
Classifications: Valve; valves.
Classifications: Winch; winches.
Classifications: Functional testing; function test.
Classifications: Management of change; MOC; change management.
Classifications: Permit to work; PTW; work permit.
Classifications: Risk assessment; hazard assessment.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
A person was fatally crushed while working beneath a diving bell.
Themes: diving, line of fire.