Investigation Report
Pipeline Pig Ejected Backwards During Loading and Fractured Operator’s Arm
10-23-2008 17:30 G02280 SM/130 Required Evacuation - Other Injury to person
- BSEE
- Investigation Report
- Unknown
- Line of fireMechanical failurePressure systems
- Process pipework and pipelinesValve
- Energy and process isolationJob safety analysisOperating and work proceduresStop-work authority
- Upstream oil and gas
Summary
An operator suffered a broken right arm when a pipeline pig ejected backwards during loading. The investigation identifies pressure leaking through two closed isolation valves and failure to maintain depressurisation. It discusses compliance with job safety analysis and operating procedures, use of a loading rod, and contingency arrangements for faulty safety systems.
Classifications: Line of fire; struck-by hazards.
Classifications: Mechanical failure; equipment failure.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Process pipework and pipelines; process piping.
Classifications: Valve; valves.
Classifications: Energy and process isolation; isolation; energy isolation.
Classifications: Job safety analysis; JSA; job hazard analysis; JHA.
Classifications: Operating and work procedures.
Classifications: Stop-work authority; stop work; stop-work intervention.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.