Safety Flash
MODU mooring line failure
MODU mooring line failure
- IMCA
- Safety Flash
- IMCA SF 09/12
- Marine OperationsStructural and Asset IntegrityVessel and Mooring
- Loss of vessel stabilityLoss of station keepingMechanical failure
- Mooring operations
- Mooring lines
- Upstream oil and gas
Summary
This safety flash describes failure of one of eight mooring lines securing a MODU during drilling. The unit moved approximately 12 m and tilted 2–3 degrees before thrusters and ballasting restored its position. The account refers to Marine Safety Forum Safety Flash 12-31.
Classifications: Loss of vessel stability; capsize; vessel stability.
Classifications: Loss of station keeping; drive-off; drift-off.
Classifications: Mechanical failure; equipment failure.
Classifications: Mooring operations; berthing; unmooring.
Classifications: Mooring lines; mooring rope; mooring wire.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Summary
Failure of one MODU mooring line allowed the unit to move and tilt before thrusters and ballasting restored its position.
IMCA SF 09/12. Themes: marine operations, structural and asset integrity, vessel and mooring.