Safety Flash
Failure of welding on hyperbaric rescue chamber medical lock door assembly
Failure of welding on hyperbaric rescue chamber medical lock door assembly
- IMCA
- Safety Flash
- IMCA SF 08/07
- CorrosionDivingInspection and MaintenanceStructural and Asset Integrity
- CorrosionLine of fireMechanical failurePressure systemsStructural and asset integrity
- Inspection and maintenancePressure testing
- Pressure vessel
Summary
A hyperbaric rescue chamber medical lock door displaced during pressure testing, seriously injuring an employee. Metallurgical examination identified corrosion and poor welding in the retaining bracket. The bracket had not been treated as load-bearing or critical and was excluded from routine inspection. The flash recommends thorough inspection of load-bearing dive-spread components.
Classifications: Corrosion; corrosion damage.
Classifications: Line of fire; struck-by hazards.
Classifications: Mechanical failure; equipment failure.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Structural and asset integrity; asset integrity; structural integrity.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Pressure testing; hydrostatic testing; pneumatic testing.
Classifications: Pressure vessel; pressure vessels.
Summary
A Member has reported that a weld failed on the medical lock door assembly of a hyperbaric rescue chamber.
IMCA SF 08/07. Themes: corrosion, diving, inspection and maintenance, structural and asset integrity.