Safety Alert
Safety Alert 296 - Catastrophic Failures in Mooring Systems Possibly Put Floating Structures at Risk
Safety Alert 296 - Catastrophic Failures in Mooring Systems Possibly Put Floating Structures at Risk
- BSEE
- Safety Alert
- BSEE Safety Alert 296
- Inspection and MaintenanceStructural and Asset IntegrityVessel and Mooring
- Mechanical failureStructural and asset integrity
- Inspection and maintenance
- Mooring fittingsMooring lines
- Competence and trainingExclusion zonesNon-destructive testing
- Upstream oil and gas
- Offshore installation
Summary
This alert examines tether-chain failure in a Gulf of Mexico hybrid riser system and earlier mooring shackle and socket failures. It discusses prohibited post-heat-treatment weld repairs, material toughness and inadequate specifications or testing. Recommendations address manufacturing inspection, qualified inspectors, representative test coupons and restrictions above buoyancy air cans.
Classifications: Mechanical failure; equipment failure.
Classifications: Structural and asset integrity; asset integrity; structural integrity.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Mooring fittings; cleats; bollards.
Classifications: Mooring lines; mooring rope; mooring wire.
Classifications: Competence and training; competency assurance; safety training.
Classifications: Exclusion zones; red zones; restricted access zones.
Classifications: Non-destructive testing; NDT; non-destructive examination; NDE.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.
Summary
The alert concerns potentially catastrophic failures in floating-structure mooring systems.
BSEE Safety Alert 296. Themes: inspection and maintenance, structural and asset integrity, vessel and mooring.