Safety Alert
Chemical Exposure Results from Trapped Pressure in MWD Tool
Chemical Exposure Results from Trapped Pressure in MWD Tool
- IADC
- Safety Alert
- IADC Alert 02-20
- Hazardous SubstancesPressure Systems
- Hazardous substancesLoss of containmentPressure systemsRespiratory hazards
- Drilling
- Upstream oil and gas
Summary
An alert describes two crewmembers exposed to suspected acid from a lithium/thionyl chloride battery during an MWD tool download. Drilling fluid leaked from an opened port, and attempts to replace its plug failed. Mist or gas subsequently escaped; the employees suffered severe vomiting and shortness of breath.
Classifications: Hazardous substances; hazardous chemicals; chemical exposure.
Classifications: Loss of containment; containment loss.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Respiratory hazards; respirable dust; inhalation hazards.
Classifications: Drilling; well drilling.
Classifications: Upstream oil and gas; oil and gas extraction; upstream petroleum.
IADC Alert 02-20. Themes: hazardous substances, pressure systems.