Fatality at Jersey Island

[gianaameri]

Well I googled it-

NADA

Two news articles devoid of any of the "facts" you allege. I also added the woman's name, separately the dive site. NADA.

There is absolutely NONE of the allegations you made EXCEPT a quote you took from someone in Rebreather world blog- and that person did not cite or reference the source directly with a link to verify the information.

That discussion also questions whether it was a Prism I or Hollis Explorer. Some claim it was a Prism 2 some say no.

So WHERE exactly do your facts come from. Unless you can cite a web-page or source, it all, as usual with you... "just so stories".

My source is the Coroner (16 bits of info.).

I quote: "Hollis Prism 2."

I have also 1 bit of info. from a journalist.

Total 17 bits of info. to include 1 bit from a journalist.

Some (not all 17 bits) of this info. has been published on the net in 2 different places (other than here) by two different people.

Then there is the stuff from BSAC.

 

[Dr. Lecter]

If a diver is breathing in and out of a single counterlung from a single rebreather hose with no one-way valve in it, the other hose being blocked, WOB would be negligible.

Maybe that is what was happening, but I am not sure.

Assuming what you posted is accurate and based on Tammy's clarification of the Hollis DSV/loop design, it sounds like it was what was happening. However, it also sounds like the incomplete assembly quickly resulted in a flood, with the loop connections being neither water nor air tight. Eight minutes (5 pre-breathe and 3 during the dive) is not a very long time to be breathing off a single lung before passing out/hitting hypercapnia. I've couch-dove the revo without scrubbers or O2 flow to see the effects of CO2 and metabolic consumption, and it takes significantly longer than 8 minutes for the effects of either to cause noticeable signs of a problem.

Admittedly, only one lung roughly halves the available O2 and gas within which the CO2 is diluted, but I'm guessing the victim was also smaller than I am. It is hard to believe that the flooding did not play a significant role given how fast the dive turned fatal.

 

[vincent54]

Why would the Coroner release info. to anyone not directly involved with this case?

 

[gianaameri]

Assuming what you posted is accurate, and based on Tammy's clarification of the Hollis DSV/loop design, it sounds like it was. However, it also sounds like the incomplete assembly quickly resulted in a flood. Eight minutes (5 pre-breathe and 3 during the dive) is not a very long time to be breathing off a single lung before passing out/hitting hypercapnia. I've couch-dove the revo without scrubbers or O2 flow to see the effects of CO2 and metabolic consumption, and it takes significantly longer than 8 minutes for the effects of either to cause noticeable signs of a problem.

Admittedly, only one lung roughly halves the available O2 and gas within which the CO2 is diluted, but I'm guessing the victim was also smaller than I am. It is hard to believe that the flooding did not play a significant role given how fast the dive turned fatal.

She was also at 14 meters - 2.4 bar (and submerged).

Jersey water ain't warm either and there is currents.

Vis. was low.

The CO2 in the counterlung would have to be multiplied by 2.4.

If somebody posts the Hollis Prism 2 counterlung volume and we can make an assumption on her weight and work rate, then we can also derive the pCO2 estimate at 14 meters (but kind of pointless to do so).

---------- Post added November 28th, 2014 at 06:23 PM ----------

Why would the Coroner release info. to anyone not directly involved with this case?

Wider public interest and safety.

Other Coroners should have done long ago what this one is doing, and it would have saved lives.

 

[Omisson]

My source is the Coroner (16 bits of info.).

I quote: "Hollis Prism 2."

I have also 1 bit of info. from a journalist.

Total 17 bits of info. to include 1 bit from a journalist.

Some (not all 17 bits) of this info. has been published on the net in 2 different places (other than here) by two different people.

Then there is the stuff from BSAC.

You spoke to the coroner - but there is no publicly released report that you can point to for 16 of your 17 "pieces of information"-

and you tell us that AFTER you claim its all available by googling... In fact that's EXACTLY what you told me to do.

So where is it?

Yea ok.

I think you are full of it. and your inability to point to a single credible reference proves it.

 

[Brad_Horn]

So where is it?

This might help you! About the Viscount's Department

 

[Omisson]

This might help you! About the Viscount's Department

Finding the vi counts contact info doesn't really tell me anything but thanks anyway.

 

[gobfish1]

Claudia?, If you raise the question on a specific thread, then I can answer in detail on behalf of OSEL. If questions on the Apoc are posted on other threads, it drowns out discussion on other units which do not offer the same functional-safety features.
The short answer is that on the Apoc it cannot be incorrectly assembled (in a diveable state) and it is impossible to half fill the scrubber as the solid-state Micropore EAC is used.
Micropore - Extendair on Vimeo
https://www.youtube.com/watch?v=JET2OdrjDlA

Hay Brad you still selling thEM o2 apox RIGS to noddy divers with no training ,


Dont know much about this death , sounds sad all round , made worse by the fact she was still learning , ie first dive as / traind ccr diver , BAD NEWS , the noddys dont stand a chance when trained by other noddys,

 

[gianaameri]

Finding the vi counts contact info doesn't really tell me anything but thanks anyway.

Then just ask the Coroner like I did.

---------- Post added November 29th, 2014 at 03:55 AM ----------

The Prism2 has 2 different size counterlungs. The 3.5 liter set & the smaller 2.5 liter set. I assume (don't know for sure) it is the combined volume. The 3.5 liter size is standard.

I think she had a scary amount of CO2 possibly producing near instant incapacitation on descent accompanied with overwhelming psychosis.

See: http://ocw.tufts.edu/data/33/508776.pdf .

Because O2 was added to a fixed volume, but CO2 was not being removed, I think she may have had to vent out some (not a lot) excess counterlung volume during the pre-breathe.

 

[Diver0001]

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A ScubaBoard Staff Message...

Merged the two existing threads on this and swept up a bit.

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