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George, This guy was teaching trimix, not rebreather. Even scarier. However, all agencies except GUE allow an instructor to teach rebreather while diving one. IANTD makes an exception for the Halcyon, due to Halcyon's own rule regarding an instructor not diving a rebreather while teaching it. This is of course common sense. The following information was taken directly from IANTD's latest standards: To become a MK-5P instructor through IANTD all dives must be conducted using a Cis Lunar. Interestingly, I thought the Inspiration was for non technical dives though the standards for Technical Inspiration Diver provide that all dives must be deeper than 165' but no deeper than 260'. Of course technical diver and trimix training can be taken as part of the course which increases the number of dives from 4 to 8 total. Be afraid, be very, very afraid. Errol -----Original Message----- From: kirvine@sa*.ne* <kirvine@sa*.ne*> To: Errol Kalayci <errol@ga*.ne*> Cc: Steven Bliim <Steven.Bliim@Mc*.co*.au*>; techdiver@aquanaut.com <techdiver@aquanaut.com> Date: Wednesday, September 01, 1999 7:53 PM Subject: Re: Rebreather problems? >Errol, what agency tells instructors to teach rebreather while on >rebreather - we do not allow that with the Halcyon. Who is the idiot >that cam up with that one? > > >Errol Kalayci wrote: >> >> Steve, >> So let me get this straight: 1) Barry was teaching a trimix course >> while using a CCR. 2) Barry's other instructor did a normal dive and >> deco, this implies either solo diver or abandonding Barry when he had >> a problem. Does anyone still have a question why an instructor should >> not be ona rebreather while teaching any course? >> All things considered Steve, you were very lucky to live through such >> a major violation of Rules #1 & 2. >> Errol >> >> -----Original Message----- >> From: Steven Bliim <Steven.Bliim@Mc*.co*.au*> >> To: techdiver@aquanaut.com <techdiver@aquanaut.com> >> Date: Tuesday, August 31, 1999 11:40 PM >> Subject: Rebreather problems? >> >> The following is reported to have occurred in Sydney, >> Australia in early August. One might say that Barry should >> buy a lottery ticket after this one. >> >> What a weekend! In Sydney to start my trimix course with >> Barry Hallett at >> > Southern Cross, Saturday was dead flat so bugger the >> course we did two 48m >> > dives with a fairly hefty surface interval, 20m viz on the >> Coollooli >> > and the Dee Why. Did some theory and mixing that >> afternoon, then Sunday >> did >> > another 48m dive on the wreck next to the Dee Why >> (Meggol), on 21.5/22 >> > Trimix, I had a lovely dive. Barry on his Buddy >> Inspiration fully closed >> > circuit rebreather however had a less than happy day (See >> below for the >> > full details). At almost 50m, Barry's 'breather gave him >> pure O2, yup, 6.0 >> > atm, needless to say he suffered major nausea, visual >> disturbances, and >> > what he describes as like being hit with 240v, twice. He >> suffered two big >> > hits but was able to make it to the surface on open >> circuit, negating >> > almost 30min of deco, no signs or symptons experienced - >> he's a very lucky >> > man. Not to be outdone, his other instructor, Kosta, also >> on a Buddy >> > Inspiration surfaced after a normal dive and deco, and >> took a mild >> shoulder >> > hit of DCS, so he went down for another 20min of deco, >> surfaced with no >> > other problems. This is also after their new girl in the >> shop took a foot >> > hit on Wed after a 48m dive, normal profile with the only >> contributing >> > factor being she had cold feet - she's now going to buy a >> drysuit! >> > >> > My dive went uneventfully, trimix is a lovely gas for >> clearing the head >> and >> > focussing clearly, and completing tasks much more quickly. >> Looking forward >> > to using it on the 70m dives next month, then......! >> > >> > Barry's big day out: (don't read on if details bore you!) >> > >> > Barry's Inspiration uses three separate electronically >> controlled O2 >> > sensors and a polling method. Near the start of the dive >> and on the >> bottom >> > at nearly 50m, one sensor went u/s, and the computer asked >> him if he >> wanted >> > to recalibrate all three, and in his self admitted >> complacency, he >> answered >> > yes. He later realised the computer was asking him a >> question akin to "Do >> > you want to suffer an enormous CNS O2 seizure and die, or >> not?" As the O2 >> > set point for the dive was 1.4, and as he had just told >> the sensors that >> he >> > was now only at 1 atm, and therefore PO2 of 0.21, the >> 'breather then >> > commenced adding pure o2 into the loop, with the expected >> results of two >> > major seizures. He should not be alive to tell this >> story, as on the >> > ascent, having bailed to open circuit, his bailout gas >> supply exhausted >> (he >> > suspects it wasn't full to start with - error #2), luckily >> he had made it >> > to the ascent line and was able to receive gas from >> another diver, but he >> > continued to the surface fearing another major hit, which >> actually >> > occurred. He was also not cognitive of one divers efforts >> to give him >> air, >> > despite being right in his face. Barry will freely admit >> he f___d up, due >> > to complacency. He still has faith in the rebreather, and >> is not shy to >> > tell people what he did wrong in orer to let other people >> learn from his >> > mistakes. Here endeth the lesson. >> > >> > >> >> Regards >> Steven Bliim > > -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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