Lobzilla
Contributor
Might work for a twinset, but with a single tank/backplate rig, the plate and the (probable) STA weight will add quite a bit to the total weight of the package. I use a single tank BP/W rig, and I prefer to lug the tank down before I assemble my kit.
Good point but still worth a try.
I also have an overactive imagination. I don't know the facts about whether a damaged valve will cause an explosion, but my mind produced that image, and I compulsively shared it.
If a tanks slips off your shoulder, step aside to get your feet out of harms way but hang on to the valve until the bottom of the tank is on the ground. With a little practice, people will think that's your way of putting the tanks down.
If the valve breaks off, a tank will not explode but will buzz around like these whistling firework things. The hole where the gas can escape from is relatively small but due to the pressure this is still a great way of getting everybody's attention.
If that tank is filled with 100% Oxygen (for deco), things may get much uglier. If even the smallest amount of metal gets hot enough from friction or impact to start burning, an explosion is typically the end result. Metal will burn easily and very rapidly in pure O2 and the energy released is enough to rupture the tank. I think there was a guy here on scubaboard who got seriously hurt after accidentally tipping over an O2 tank in his garage.
Scuba tanks are manufactured according to DOT standards established for industrial cylinders that get banged around, fall off a truck, slide across an intersection after falling off a truck, etc. So there is a healthy amount of safety margin built into these tanks.
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