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To: techdiver@aquanaut.com
Dear Danielo Allegrini and Leandro Dybal Bertoni,
Your privat emails to me caused me to re-examine the information that I had
available.
I'm sorry to have posted depreciating remarks about the support divers, from
the information that I had at the time I assumed that the 2 divers who were
videotaping were also doing midlevel support. Having reread the information, I
now agree that they were not doing support, and that there appears to have been
no deep or midlevel support divers to assist the 2 protagonists Marcus Werneck
e Luis Toledo. My comments about the support divers not having a clue were
wrong since they were able to connect up to the bottom divers at 22M and
exchange information about 2 hours into the dive. If deep and midlevel
support divers had been available, would this have made a great deal of
difference?
Michael Fisch
----- Original Message -----
Sent: Tuesday, September 10, 2002 4:13 PM
Subject: RB80 - accident
>
> I have received so many e-mails asking for the Report that I
decided to
> post it to all members.
> You can have an access to full Report at
> http://www.pdic.com.br/relatorios.asp in spite of it is in
Portuguese
there
> are some photos and the graphic (dive profile) of both divers.
The
> downloading is quite large (1mb).
> Below I will try to figure out the main points of the Report :
> ___________________________________________________
> Diving Accident Report
> Accident's Place : Ceita Core Cavern, Bonito, MS
> Accident's Date: 20 August 2002
> Divers in the accident : Marcus Werneck e Luis Toledo
> Support divers:
> Ismael Escote, Jayme Planas Navarro, Edmundo da Costa
J�nior; Leandro
Dybal
> Bertoni,
> Danilo Allegrini, Valfredo Pires Jr., S�rgio Costa
> Level of training :
> � Marcus Werneck - PDIC Instructor Trainer; Instrutor GUE
Cave 1, 2 e Tech
> 1, 2, e 3; RB-80 diver
> � Luis Toledo - GUE Cave 2, Tech 3, RB-80 diver
> � Ismael Escote - Instructor NAUI, PDIC; Full cave diver,
Trimix diver
> � Jayme Planas Navarro - Full cave diver; Trimix diver
> � S�rgio Costa - GUE Cave I diver; Photo Sub
> � Edmundo da Costa J�nior - Instructor PADI, SSI, GUE Cave
1 e Tech 1,
> Instructor TDI
> Trimix
> � Leandro Dybal Bertoni - GUE Cave 2 diver, Tech 1; SSI
Stress e Rescue
> diver
> � Danilo Allegrini - GUE Cave 1 diver, Tech 1; SSI Stress e
Rescue diver
> � Valfredo Pires Jr - GUE Cave 1 diver, Tech 1; Instructor
PADI
> Important equipments used :
> � Halcyon RB-80 with double S80, stages S80 e S40
> � Argon cylinder 14 cuft 2015 psi, with Argon
> � Dry Suit DUI TLS350
> � Undergarment DUI Polartec 300
> � Hood 5 mm
> Prof. Max and Mixes used during the dive :
> Bottom : 160 m -> TMX 8/77
> Intermediary : 66 m -> TMX 20/45
> Deco : 21m -> EAN 50
> Deco : 6 m -> 100% O2 -> (analysis after accident gave 98.3%
O2)
> � Max. Prof. : 151 meters
> � Bottom time till starting ascenting : 30 minutes
> � 66m change to TMX 20/45 - 59 min. of the dive
> � 23m change to EAN 50 - 123 min. of the dive
> � 6m change to 100% O2:
> � Marcus Werneck - 53 min between 6 and 3 meters
> � Luis Toledo - 88 min. between 6 and 3 meters
> Divers ready to start dive
> Accidents description :
> No problems during the begging of the dive, they went down
Ceita Core
Cavern
> as was planned before. After 30 minutes they start ascenting,
then Marcus
> Werneck noticed a small leak in his Dry Suit, probably thru
the neck's
seal.
> Both divers said they forgot to flush the RB80' Loop before
ascenting till
> arrive at the first stop (change mix) at 66m. They also said
they do not
> remember what happened during this part of the dive and that
sometimes
> breathing became �heavy�. Arriving at 40m , Luiz Toledo
said he was having
> difficulties to coordinate movements of his bellow members.
Marcus Werneck
> started then an extension of Deco stop times and after arrive
to a certain
> depth, helped to stabilize his buddy position and also changed
his mix to
> EAN 50 . After 100 minutes running time, "shallow" support
divers went
down
> to the 22m deco stop but both deep divers were not there, they
were bellow
> 30 meters. The support divers decided to stay at 20 meters,
waiting for
both
> deep divers. Another team of 2 divers went down passing thru
the support
> divers at 20 meters and stayed with both deep divers below
taking photos
for
> the next 20 minutes. The 2 photographers left the cave after
that. After
25
> minutes the support divers start to leave the place, they
noticed that the
> deep divers still would take more time bellow. They met
another 2 divers
> that were ready to give a deeper support for both deep divers.
This last
> team met they at 22 meters, Marcus Werneck then said that Luiz
Toledo was
> not feeling the legs and said for them to prepare the emergency
procedures,
> including to bring O2 to 6 meters and also a full face.
> At 18 m, Marcus Werneck felt strong vertigo and decided to
abort the 18m
and
> 9m deco stops, his dry suit also had more leaking problems.
Marcus Werneck
> left water after 53m of pure O2 and with hypothermia. Luiz
Toledo was
still
> doing his deco at 6 and 3 m and left water after 88m with pure
O2.
> There were rescue and all proceedings were done for both
divers "(you can
> find more info more at the full report)" including a
Hyperbaric Chamber
next
> day in Rio de Janeiro.
> No more details.
> _____________________________________
> As you can notice this report is very confusing with so many
strange
> proceedings during the dive. It will be nice to have a better
explanation.
> Regards, Carlos
> """"""""""""""""""""""""""""""""""""""""""""""""
> mailto:rebreather@u...
> mailto:rebreather@s...
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