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"There are no stupid questions, just stupid people=2E" Mr=2E Garrison, =20 Southpark=2E Seriously, I did the IANTD Gas Blender course many years ago=2E It was a =20 six hour thing and although I learned the basics there was still an awful =20= =20 lot left unanswered=2E Simple things like where to actually buy gas from=2E Anyhow, as I recall, one thing that was barely touched on was gas =20 quality=2E There are two grades of air: "clean" and "oily", simple enough=2E= =20 It is just natural to assume (industrially supplied) breathing gases are =20 "clean" and, for example, welding gases are "oily" and that contamination =20= =20 of delivery equipment will occur if you use the same hoses, fittings, =20 etc=2E In most cases the differences between grades and gases comes from =20 the number of purges/evacs of the storage bottle done by the supplier=2E =20 Hydrocarbon content rarely comes into it=2E Welding argon is no more likely= =20 to be "oily" than diving grade helium, especially as many suppliers use =20 one-way valves=2E This, on my course at least, was never made clear and we=20= =20 learned the hard way=2E With the collective unconcious of the internet, which we never had back =20 then, things should be better=2E Personally, ask a question in the right =20 spirit and it will get answered in the same way (and it does cut both =20 ways)=2E -----Original Message----- From: phi@sk*=2Ebe Sent: Tuesday, April 25, 2000 10:19 AM To: scottk@hc*=2Ecom; bryon_bertrim@ho*=2Ecom; techdiver@aquanaut=2Eco= m Subject: RE: Q about 02 fill whip experience << File: ENVELOPE=2ETXT >> --------------------------------------------------------------------------= =20 -- -----Original Message----- From: Scott [mailto:scottk@hc*=2Ecom] <snip> >> Now, if you are so fucking smart, why are you asking *stupid* =20 questions? <snip> IMHO, I don't think there is such a thing as a "stupid" question=2E If you don't want to answer, just ignore the question rather than =20 slamming him=2E He asked because he doesn't know and wanted to learn=2E I am sure yo= u didn't know the answer to this question at one time in your life=2E And I =20= =20 am sure you asked someone=2E And if this person told you that you ask "stupid" question, I am sure you still don't know the answer :-) -Phi -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut=2Ecom'=2E Send subscribe/unsubscribe requests to `techdiver-request@aquanaut=2Ecom'=2E __________________________________________________________________________=20= =20 ____ This message has been checked for all known viruses by Star Internet =20 delivered through the MessageLabs Virus Control Centre=2E For further information =20 visit- http://www=2Estar=2Enet=2Euk/stats=2Easp Visit our web site at www=2Escott-wilson=2Ecom Privilege and Confidentiality Notice=2E This e-mail and any attachments to it are intended only for the party=20 to whom they are addressed=2E They may contain privileged and/or=20 confidential information=2E If you have received this transmission in=20 error, please notify the sender immediately and delete any digital=20 copies and destroy any paper copies=2E Thank you=2E Scott Wilson Scotland Ltd Registered in Scotland No=2E 48951,=20 Registered Office: 6 Park Circus, Glasgow, G3 6AX=2E UK=2E ______________________________________________________________________________ This message has been checked for all known viruses by Star Internet delivered through the MessageLabs Virus Control Centre. For further information visit- http://www.star.net.uk/stats.asp -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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