Containing refrigeration gases and nitrogen
Gas cylinders containing refrigeration gas and nitrogen are normally sent to the vessel full and then returned to a service provider when empty. These gases are not corrosive and providing the bottle contains the original gas sent from the supplier (and gas has not been added to the bottle on board) the bottles can be periodically inspected and tested at intervals in accordance with the RID/ADR* regulations. In most cases for refrigeration gases and nitrogen this is at 10 yearly intervals.
The inspection and testing should include –
– Checking the cylinder’s internal and external conditions;
– Checking of threads, service equipment, any other accessories including the pressure-relief devices; and
– Carrying out a pressure test.
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Source: The Isle of Man Ship Registry
