Safety Alert
Safety Alert 323 - Subsea Flowline Failure Causes Pollution Incident and Delayed Detection Leads to Larger Spill Volume
Safety Alert 323 - Subsea Flowline Failure Causes Pollution Incident and Delayed Detection Leads to Larger Spill Volume
- BSEE
- Safety Alert
- BSEE Safety Alert 323
- EnvironmentHydrocarbon ReleaseStructural and Asset Integrity
- Environmental protectionHydrocarbon releaseStructural and asset integrity
- Inspection and maintenanceROV operations
- Process pipework and pipelinesRemotely operated vehicle
- Alarm managementOperating and work proceduresSafety communication
- Upstream oil and gas
- Subsea
Summary
A subsea flowline released production fluids while personnel interpreted alarms as slugging or plugging, delaying shut-in for several hours. With the failure cause still under investigation, BSEE recommends thorough alarm investigation, revised leak-detection escalation, monitoring of operating data, conditional ROV integrity checks and transient analysis of small-volume leaks.
Classifications: Environmental protection; environmental safety; pollution prevention.
Classifications: Hydrocarbon release; hydrocarbon leak; oil and gas release.
Classifications: Structural and asset integrity; asset integrity; structural integrity.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: ROV operations; remotely operated vehicle operations.
Classifications: Process pipework and pipelines; process piping.
Classifications: Remotely operated vehicle; ROV; underwater robot.
Classifications: Alarm management.
Classifications: Operating and work procedures.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Subsea; underwater worksite.
BSEE Safety Alert 323. Themes: environment, hydrocarbon release, structural and asset integrity.