Safety Alert
Maintenance – Trapped Pressure
Maintenance – Trapped Pressure
- IADC
- Safety Alert
- IADC Alert 06-42
- Inspection and MaintenanceIsolationPressure Systems
- Pressure systems
- Fluid transfer
Read at IADCOpens the publisher’s page on iadc.org
Summary
This alert describes nitrogen transfer between cylinders using partially filled cylinders to replenish others. After closing the cylinder valves, an assistant vented the line by loosening a connection with a wrench. A further nitrogen release during disconnection startled him; his head struck the cylinder rack, chipping a tooth.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Fluid transfer; fluid loading; fluid offloading.
Summary
Trapped pressure created a hazard during maintenance work.
IADC Alert 06-42. Themes: inspection and maintenance, isolation, pressure systems.