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Greg Ryan writes: > > The benefit of discussing these incidents is more derived from > finding ways to modify gear/techniques to prevent them becoming accidents, > rather than illustrating particular accident treatments. Did the skipper use a full-face mask on this diver? I'd be really nervous sending someone with tunnel vision and probable neuro symptoms back into the water without one. > So I'll start the ball rolling on this one. Remember that it was > a BC hose valve which unseated and decided to empty the tank. I've > been told that bending up the hose and tying it off (in a knot?) would > prevent or at least slow the loss of air. Has anyone ever tried this > or heard of it being used successfully? It sounds plausible for > low pressure hoses, but I'm not sure about high pressure. I can't figure out what the BC Inflator Valve is. If you disconnect the LP hose from the BC, what was flowing, the quick-disconnect valve? I don't know whether tying it would help or not. How much can you kink a 120+psi air hose? As for the HP hose, it would not lose as air as rapidly as the LP hose because the restriction is much greater at the 1st stage. Another incident worth tossing in: some friends and I were decompressing after a short deep dive when one fellow's LP inflator hose came out of the clamp fixture. That is, the rubber portion of the LP hose came out of the 1st stage connector. As you can imagine, the 1st stage proceeded to vent VERY rapidly through its new 1/8" blowhole. Luckily his buddy got the tanks isolated quickly and he continued his decompression uneventfully. There was no dynamic stress on the hose -- he wasn't even breathing off his own rig, he was breathing off a hang tank of EANx 50 at the time. This was a very useful learning experience for me: if something this random and potentially fatal can happen without provocation, then steps had better be taken to protect one's self against this. Can you say "Redundancy, redundancy, redundancy?" Dave Duis NAUI AI Z9588, PADI DM 43922, EMT duis@be*.wp*.sg*.co* See it, don't spear it.
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