Investigation Report
Hydrogen Sulphide Release Through Corroded Piping During Pigging
05-29-2016 13:10 G12362 MP 299 H2S release through corroded piping
- BSEE
- Investigation Report
- Unknown
- CorrosionHydrogen sulphideLoss of containment
- Inspection and maintenance
- Gas detectorProcess pipework and pipelines
- Alarm managementEmergency responseAtmospheric gas testingPreventive maintenance
- Upstream oil and gas
- Offshore installation
Summary
BSEE investigates a hydrogen sulphide release during pigging at Main Pass 299-FP. Exterior corrosion compromised scrubber outlet piping; inadequate routine corrosion maintenance was identified as the primary cause. The report describes repeated alarms, mustering, breathing apparatus use and leak detection. Internal corrosion was not confirmed.
Classifications: Corrosion; corrosion damage.
Classifications: Hydrogen sulphide; H2S; H₂S; hydrogen sulfide.
Classifications: Loss of containment; containment loss.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Gas detector; gas monitor; gas detection instrument.
Classifications: Process pipework and pipelines; process piping.
Classifications: Alarm management.
Classifications: Emergency response; emergency preparedness.
Classifications: Atmospheric gas testing; gas testing; atmosphere testing.
Classifications: Preventive maintenance; preventative maintenance; planned maintenance.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
Classifications: Offshore installation; offshore platform; offshore rig.