What containers can be used to transport SF6?
According to 49CFR173.115(b), any SF6 at pressures less than 25PSIG @ 68°F can be transported in a non-DOT approved container – without any further transport requirements. However, at pressures of 25PSIG @ 68°F or greater, the container must bear DOT approval numbers, and have a working pressure of at least 1000 PSIG. Per 49CFR173.304a(2) (liquefied, compressed gases), SF6 may transported in cylinders with DOT approval numbers: DOT-3A1000; DOT-3AA1000; DOT-AAX2400; DOT-3; DOT-3AL1000; DOT-3E1800; DOT-3T1800. The four digit number is the minimum working pressure of the vessel.
