The Swedish Transport Agency has received a warning regarding valves in the high-pressure CO2 system from the US Coast Guard. The valves may self-release unintentionally and put personnel in the vicinity at great risk. The valves are in use on Swedish vessels.
More detailed information and a designation of these valves can be found on the Swedish Transport Agency website:
SFu Safety Alert 2009-08-20,
USCG Safety Alert 05-09