Safety Flash
Leak of oil-based mud
Leak of oil-based mud
- IMCA
- Safety Flash
- IMCA SF 08/23
- EnvironmentHazardous SubstancesInspection and Maintenance
- Environmental protectionLoss of containmentMechanical failurePressure systems
- Fluid transferPressure testing
- Valve
- Pre-use checksPreventive maintenanceSafety communication
- Marine industry
- Vessel
Summary
A vessel preparing to transfer oil-based mud to shore spilled about 20–25 litres through tank ventilation during hose pressure testing. A deteriorated valve seal prevented full closure. The flash describes deck containment, toolbox communication, valve replacement, monthly manifold-valve cleaning and clearing residual chemicals or mud from transfer lines.
Classifications: Environmental protection; environmental safety; pollution prevention.
Classifications: Loss of containment; containment loss.
Classifications: Mechanical failure; equipment failure.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Fluid transfer; fluid loading; fluid offloading.
Classifications: Pressure testing; hydrostatic testing; pneumatic testing.
Classifications: Valve; valves.
Classifications: Pre-use checks; pre-use inspection.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Marine industry; shipping industry; maritime sector.
Classifications: Vessel; aboard ship; onboard vessel.
Summary
A vessel was preparing to transfer oil-based mud to the shore base. The shore base team began pressure testing their hose to ensure there was no leakage, but during the test about 20-25 litres of mud came out of the tank ventilation.
IMCA SF 08/23. Themes: environment, hazardous substances, inspection and maintenance.