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I took my tanks to Fla Keys in august. When the local dive shop on Marathon saw the TDI mix stickers on the tanks, he recoiled in horror. "What did you have in these tanks!?" he demanded. "I dunno, 32, I think", "Well, we'll have to empty it all out" he said. "what the hell for?" I asked. "There's been a few tank explosions lately" said he. I could see it was pointless to argue. The odd thing is that they had a haskel pump on their fill station, but tank filler was pretty much clueless. I have done nothing special to my tanks and have quit a few partial pressure fills on them. So far nothing has blown up. Theres always hope, I suppose. >Hello All, > >I'm looking for some answers concerning filling O2 cleaned and labled nitrox >tanks with plain old air. I have found that some shops have no problem doing >it while others rant and rave about how dangerous it is. > >The best explanation i've got so far is that the air from a non-nitrox >facility may not be as clean (filtered) as the air being pumped in on top of >the pure O2 during a nitrox fill. This less pure air might contain oil or >other contaminants which could combust when put in contact with pure o2 >under >pressure during my next nitrox fill. > >My question is, would a repuatable dive shop provide air fills to its >customers that would not also be pure enough to be placed in a O2 cleaned >tank. And if a shop providing nitrox fills has air that much cleaner, why >should I breath contaminated air from a non-nitrox facility? > >And to go way out on a limb...... I've calculated that pure O2 (100%) at 600 >psi and air (21% O2) at 3000 psi have about the same parcel pressure O2. >Wouldn't they both have the same explosive potential, and if so shouldn't >all >tanks be o2 cleaned?? > >Flame away....... > >Kirk > >P.S. One of the dive shop owners told me that there have been two tank >explosions in the last couple months because of contaminants. He couldn't >tell >me exactly where or when, just that it happened "in the mid-west". Anyone >hear >of these?
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