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Old 5th December 2006, 09:51   #7 (permalink)
solocavediver
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Join Date: Apr 2006
Location: Leeds UK
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Re: DAN Hosts DEMA Pre-conference Diving Fatalities Investigation Workshop Related to

I have to say I disagree with some of this....

" the rebreather community has a lot of work to do in terms of people's "perception" of rebreathers.
The image for OC divers is of something very technical and very dangerous."

Well no, right now the community needs to do some work on the machines themselves. The OC community is quite correct, they are
very technical and very dangerous, just as early aeroplanes were very technical and dangerous compared to going by ship or train. But the point is it's early days, not for the idea of a rebreather - that's > a century old, maybe older than open circuit - but for the idea of rebreathers as a mass market thing that a large chunk of divers may want to do. But it is dangerous, dangerous enough to have my cavediver friends worried about me when I do it - and cavediving has a "most dangerous sport in the world" reputation, but still they worry about rebreathers.

"
This is not the way to grow a "baby", and to dispell the myth of the "silent death"."

Well once again I sympathise, but it is not entirely a myth. There are a considerable number of unexplained deaths on rebreathers. Once they are fully understood, and the machines carefully designed and programmed to avoid them, we can hope that mature rebreather designs will be like mature aeroplane designs - the safest method of doing it that there is. Wouldn't that be nice!! Right now, we have the situation where if you're really expert, it can be safer on a rebreather - like aeroplanes circa 1925 were probably safer than ships if you REALLY knew what you were about. We need to aim for the time when even if you're a novice, the Rebreather is safer. It can be done.

- cheers,

Charles.







Quote: (Originally Posted by granso) View Original Post
Hi!
Attached you will find what was sent after the meeting. It is still IN PROGRESS.

This sounds interesting
[...]DAN has offered a page on its website where rebreather manufacturers can have links to their own websites for the purpose of allowing public access to checklists for use in the event of a rebreather fatality. [...]

My two cents having attended the meeting:
the rebreather community has a lot of work to do in terms of people's "perception" of rebreathers.
The image for OC divers is of something very technical and very dangerous.

Now I entered this world less than one year ago, and I am a recreational diver flyin with SCR, even if I like understanding things and therefore I read and discussed a lot about CCR as well. What I found out is that the rebreather community is not united, on the contrary (it's my feeling, I hope someone will deny) there are a lot of people trying to
run other people down. This is not the way to grow a "baby", and to dispell the myth of the "silent death".

On the data presented: if you deal with statistics, you know it's "lies damn lies". I mean, give a set of data and a result you want to obtain ... there will be a test to get that result. Sad but true. You must be very honest and careful when handling data.
Some comments on the data presented:
when reported the number of fatalities depth was not specified, solo diving, cave diving etc ....
Now could you compare recreational OC diving and technical/cave rebreather diving?
Let's take cars: do you average indy or F1 accidents with highways or city accidents? I guess nobody would do that.

Now, a lot of the discussion was focussed on how sending the unit to
coroners so that they get there in good condition. This is important in terms of finding out the reason of the fatality. But ... Is that the point?
Isn't it education the point to stress? In open circuit you start from OWD, not from DM.
I personally do not think the a particular unit is dangerous. You can share or not some technical choices. An accident happens bc you exceed your limits, bc of a human error.
And you can avoid errors by training extensively people.

Just two cents from a newby who loves being underwater and loves avoiding blowing bubbles.

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