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Sounds more to me that you are just an apologist for mindless, dumb, conflicting standards. Rather than trying to rationalize the actions of these dive shops, why not offer solutions? Also, I have never understood how you can, using proper procedures, hook up a tank with 1000 psi to a source with 4000 psi and somehow expect oxygen to migrate upstream and blow the place up. If you were to apply the same standards to driving cars, the speed limit would be 5 mph and engines would be limited to 6 hp. Trying to create rules for every possibility real or imagined, is a waste of time and money. Jim On 8/1/97 1:24 PM CHKBOONE@ao*.co* wrote: >Mike, > > I just called Olympus dive shop and got their side of the story. It >seems that the reason they wanted a sticker on each tank is for >identification on a vessel full of divers of all kinds - an insurance >requirement implemented after an accident involving a tank mix-up. They >said that they would have topped off your tanks as you liked if you would >have just put a sticker on each one. I know this is a pain in the butt but >I think I would have just slapped a sticker on the other tank and carried on. > > > The reason Discovery Diving could not top off the tanks was because they >are not a blender and their compressor is not cleaned for O2 applications. > Adding air on top of a high O2 mix requires the same cautions as partial >pressure filling, maybe more since any oily substances would be atomized as >they entered the tank. They have no way of knowing what the mix in the tank >is but it is reasonable to assume it's high if you are topping something on >the order of 500 to 1000 psi with air to get a nitrox mix. > > Sounds to me like they did the reasonable thing and you should be more >pleased with their diligence than irritated by the inconvenience and >redundant labeling in this case. > > As to the isolator valve screw up, only you are to blame for not >supervising the filling of your own tanks. You know these things happen ! > NEVER leave your tanks to be filled by anyone - it introduces another >unknown into an already shaky and complicated formula. By the way, do you >have and maintain your own O2 analyzer or do you trust others with that too. > > There is a lot more to safe technical diving than knowing how to use the >equipment and planning and executing the dive itself. Dealing with dive >shops and boat captains is a soft science far more difficult to get a handle >on than the technical aspects of diving itself yet every bit as important >where safety and success is concerned. > > Thank your lucky stars for shops that err on the side of safety. There >is nothing more dangerous to the uninitiated diver, defensless by virtue of >his ignorance, than dependancy on inept service personnel. > > I understand your frustration, God knows I've suffered through my share, >but technical diving is something you must be able to afford, both monetarily >and emotionally. > > I have nothing to do with these shops and have never dove in NC. I do >not teach diving and have never made a dime on it. This comes straight from >the heart and soul ! > > >Chuck -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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