Safety Flash
Helium gas quad – Gas variances across quadrants
Helium gas quad – Gas variances across quadrants
- IMCA
- Safety Flash
- IMCA SF 10/19
- Competence and TrainingDivingPressure Systems
- Human factors
- Diving operations
- Gas cylinder
- Pre-use checksSafety communication
- Marine industry
Summary
A helium gas quad intended for later use was rejected after analysis revealed differing oxygen concentrations between its quadrants and inconsistent markings. The flash identifies poor production checks and gas mixing, emphasising checks against documentation, on-site testing and consultation with suppliers about individual quadrant sampling.
Classifications: Human factors; human performance; ergonomics.
Classifications: Diving operations; diving; commercial diving.
Classifications: Gas cylinder; compressed gas bottle; gas cylinders.
Classifications: Pre-use checks; pre-use inspection.
Classifications: Safety communication; toolbox talk; toolbox talks.
Classifications: Marine industry; shipping industry; maritime sector.
Summary
Gas composition varied between quadrants of a helium quad because of incorrect labelling and incomplete mixing checks.
IMCA SF 10/19. Themes: competence and training, diving, pressure systems.