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Making a mistake is the downside, but Tom Mount (sp?) called a dive on Bill Mee when he reached back in the cave and found that his isolator was shut. He opened it, heard the gas rushing across , an then got concerned that maybe all of the oxygen was on one side, and the air on the other. There is no reason on this earth to not leave the isolator all the way open, all of the time. John, it is bullshit like this that kills smart people . Don't do it. Taylor, John wrote: > > George, > > You still didn't confirm (or otherwise), whether missing the dive was the > downside here? > > 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 12:00 PM > > To: Taylor, John > > Cc: techdiver > > Subject: Re: isolator valve position > > > > 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. > > > > 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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