Safety Flash
Incompatible threads on the bell onboard gas bottles
Incompatible threads on the bell onboard gas bottles
- IMCA
- Safety Flash
- IMCA SF 08/00
- DivingInspection and MaintenancePressure Systems
- Pressure systems
- Inspection and maintenance
- Gas cylinderValve
- Marine industry
Summary
A diving support vessel reported incompatible pillar valve and cylinder threads discovered during recertification and testing of bell onboard gas bottles. The bottles had W28.8 x 1¼” threads to DIN 477, while valves were ¾” NPT. Contractors may wish to check their worksites for similar mismatches.
Classifications: Pressure systems; stored pressure; pressurised systems; pressurized systems.
Classifications: Inspection and maintenance; asset inspection; equipment maintenance.
Classifications: Gas cylinder; compressed gas bottle; gas cylinders.
Classifications: Valve; valves.
Classifications: Marine industry; shipping industry; maritime sector.
Summary
Incompatible valve and cylinder threads were discovered during recertification of diving bell gas bottles.
IMCA SF 08/00. Themes: diving, inspection and maintenance, pressure systems.