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In a message dated 97-09-11 03:10:59 EDT, you write: >> In other words, once opened enough to the ambient environment the dynamics >>of the closed system that permitted the initial and sustaining rate of >>combustion collaps quickly. >This is facinating. >For what it's worth, I went back to the source I was asking for >information on O2 handling, (a welding shop), and grilled them on O2 >explosions, how they were prevented, and how catastropic they are if they >occur. >Turns out that they use metal to metal connections exclusively, to avoid >exactly what we are talking about here. >They were also unainimous in their opinion that an O2 fire, once started, >would escalate to a catastrophie instantly, with no prevention possible. >I can't help but note that they were also unainimous in their >inexperiance, that is, none of them had ever witnessed such an event. >Your theory, if so, seems to indicate that the event you described is an >absolute worst case. That is, any opening to the envirement would cause >such a collapse, and extinquish the fire. >Do you agree? ================================== What I described as possibly happening in this case was close to a minimum case. A worst case would be if the inside of the tank caught fire and then ruptured. Once the inside starts burning it will probably continue as long as there is confined oxygen and fuel whether the valve opens up or not. It's not really "my" theory except for bits and pieces here and there where I speculate, it's the scientific community's theory and observations. >To continue, I don't understand why you aren't willing to follow up on >your claim, but I suppose I'm willing to investigate further, as I'm >interested in O2 cleaning issues. ================================================ I have not followed up because "I" already know what can happen. I simply put this out in the first place to help others see that it does happen in the real world - not just in labs. Also, as I said before, the details of this case really don't matter much except to those interested in the science behind it, as you seem to be. If you can get hold of some of the safety films used by industry you will find them very interesting and eye opening. >From your first post: >>Last week at Underseas Divers on Big Pine Key >OK, the shop name is Underseas Divers, but I have no idea where Big Pine >Key is. >What state? What city-town? >Do you want me to look these up myself, or could you provide a phone >number-area code? >Do you have the name of the person who was injured? What date did it >occur on? ====================================== I will send you this info by e-mail but I talked to them today and I can tell you that you wont get much out of them. They typically blame the diver's tank and pretend not to know much about the details that we are interested in, as if no one was interested enough to inspect the damage closely. I don't blame them at all for not saying much but it disgusts me that they blame the diver. I believe that it is as my source said - the adaptor was dirty. I really wish the shop would get on here and tell us exactly what happened just for everyone's education but as is always the case these businesses will protect themselves at all cost even to the point of blaming their clientele and withholding information that could save lives. No wonder no one believes O2 cleaning is necessary. I hope you can find out more than I have. Perhaps there is an official report of some kind from OSHA or the county. Let us know what you find out. Chuck >--------- >"Huh?" > --Jammer, 1992 -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send list subscription requests to `techdiver-request@aquanaut.com'.
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