Guidance
MODU mooring systems in cyclonic conditions information paper
MODU mooring systems in cyclonic conditions information paper
- NOPSEMA
- Guidance
- Emergency ResponseManagement of ChangeStructural and Asset IntegrityVessel and Mooring
- Loss of station keepingMajor accident managementRegulation and legislationRisk managementStructural and asset integrity
- Inspection and maintenanceMooring operations
- Mooring linesNavigation and positioning equipmentWire rope
- Emergency responseManagement of changeRisk assessmentSafety-case assurance
- Upstream oil and gas
Summary
This information paper examines cyclonic mooring risks for mobile offshore drilling units. It discusses site-specific design return periods, met-ocean and seabed inputs, component degradation, installation assurance and change management. Operational guidance covers line-tension management, inspection performance standards, emergency preparedness and consideration of position monitoring during cyclone evacuation.
Classifications: Loss of station keeping; drive-off; drift-off.
Classifications: Major accident management; major accident prevention.
Classifications: Regulation and legislation; safety legislation; regulatory requirements.
Classifications: Risk management; risk evaluation.
Classifications: Structural and asset integrity; asset integrity; structural integrity.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Mooring operations; berthing; unmooring.
Classifications: Mooring lines; mooring rope; mooring wire.
Classifications: Navigation and positioning equipment; ECDIS; AIS; chart plotters.
Classifications: Wire rope; steel wire rope.
Classifications: Emergency response; emergency preparedness.
Classifications: Management of change; MOC; change management.
Classifications: Risk assessment; hazard assessment.
Classifications: Safety-case assurance.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Summary
The paper discusses design, installation, assurance and emergency preparedness for MODU mooring systems exposed to cyclonic conditions.
Themes: emergency response, management of change, structural and asset integrity, vessel and mooring.