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John, I am not even mildly suprised. When something is really , really , really stupid, I never need to look very far to find out whence it originates. Sorry ( not to you , but in general) to be so blunt, but this just takes the cake. Thanks for pointing this out. We have a lot of work to do to offset the damage that is being done by the intitutionalized forces of ignorance out there. A lot of work, and I do not mind doing it until it is arrested. Taylor, John wrote: > > George, > > What do you mean by a "mixing screwup"? Both BSAC extended range courses and > IANTD Trimix teach opening the isolator one turn only. > > I can only think you mean that the rig may be filled with the isolator > closed. This can only happen if someone closes it fully (I always open it > fully after use). I thought you guys always filled your own tanks? This has > happened to me in the past, and caused me to miss a dive. > > Regards and seasons greetings, > > JT > -- > John Taylor > CREDIT | FIRST > SUISSE | BOSTON > Equity Derivatives and Convertibles Unit > * +852 2101 6927 (Office) > * +852 2101 7698 (Fax) > * +852 9031 6395 (Mobile) > * mailto:john.taylor@cs*.co*.uk* > * mailto:live4diving@ho*.co* > > > -----Original Message----- > > From: kirvine@sa*.ne* [SMTP:kirvine@sa*.ne*] > > Sent: Tuesday, December 28, 1999 7:07 AM > > To: Jbdvr@ao*.co* > > Cc: techdiver@aquanaut.com > > Subject: Re: isolator valve posistion > > > > NO - extremely dangerous. The tiny chance that you need to islolate is > > no match for the chance of a mixing screwup. Don't do it. Besides, it > > would take about 25 minutes to drain your tanks on a freeflow with > > broken knob or freezeup, and the few extra seconds it would take to make > > another turn on the knob is not exactly the risk here. > > > > > > Jbdvr@ao*.co* wrote: > > > > > > I read a article the other day where the author recommended only > > turning > > > the isolator valve open partly, say one full turn, to equalize the > > pressure > > > between the tanks and allow for faster shut down in a emergency. Does > > this > > > practice have any merit? thanks..joe > > > -- > > > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > > > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > > > > -- > > Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. > > Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'. > > This message is for the named person's use only. It may contain > confidential, proprietary or legally privileged information. No > confidentiality or privilege is waived or lost by any mistransmission. > If you receive this message in error, please immediately delete it and all > copies of it from your system, destroy any hard copies of it and notify the > sender. You must not, directly or indirectly, use, disclose, distribute, > print, or copy any part of this message if you are not the intended > recipient. CREDIT SUISSE GROUP, CREDIT SUISSE FIRST BOSTON, and each of > their subsidiaries each reserve the right to monitor all e-mail > communications through its networks. Any views expressed in this message > are those of the individual sender, except where the message states > otherwise and the sender is authorised to state them to be the views of > any such entity. -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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