Re: Deputies try to raise doomed sub

["Alan D. Secor" <secor@btv.ibm.com>]

I guess that depends on how catastrophic the breach was and how fast
the sub flooded....but you're right, as the water rushes in, the 
remaining air would be compressed.  It still sounds like the
hyperbaric treatment was more of a precaution though.

Al Secor

>Would it truly be 1 atm if the hull were compromised....?
>
>Bill Winner
>-----Original Message-----
>From: Alan D. Secor <secor@btv.ibm.com>
>To: personal_submersibles@psubs.org <personal_submersibles@psubs.org>
>Date: Wednesday, March 03, 1999 7:27 AM
>Subject: Re: Deputies try to raise doomed sub
>
>
>>With all this talk about air embolisms and the bends, I think you guys
>>are forgetting one simple fact....this guy was in a 1 atm sub and
>>therefore the air in his lungs was at 1 atm, same as if he were doing
>>a breath hold surface dive.  An air embolism requires an over-expansion
>>injury to the lungs, which requires breathing *compressed* air, holding
>>one's breath, and doing an ascent.  The only pressure related injury
>>he should have suffered would have been blown ear drums as Jon stated
>>below.
>>
>>Al Secor
>>
>>>
>>>
>>>Jon Hylands wrote:
>>>
>>>> On Mon, 01 Mar 1999 23:14:54 -0500, you wrote:
>>>>
>>>> > Hansen was treated at Bronson for the bends, a painful condition
>caused
>>>> > by sudden removal from a pressurized atmosphere. Bronson is the only
>>>> > hospital in the state with a decompression chamber since Alpena
>General
>>>> > Hospital stopped using one early this year.
>>>>
>>>> Why did this guy have the bends? His sub was a 1 atm sub, wasn't it?
>>>> You should be able to free-ascent from 100 feet without getting any
>>>> nitrogen build-up, shouldn't you?
>>>>
>>>> Or was it the sudden change in pressure that did it?
>>>>
>>>> Later,
>>>> Jon
>>>
>>>The sudden pressure rise will POP your ears, POP as in make a hole in your
>>>ear drums and make you disoriented and dizzy.The news papers only get it
>1/2
>>>right every time. Like I tried to say earlier...
>>>"....it was a possible air embolism that he was treated for. This can
>happen
>>>when you hold your breath on
>>>accent,"
>>>When a person panics under water they hold their breath. Not good.
>>>Holding your breath on accent will force air into your blood stream and
>cause
>>>something like a stroke, or the bends, not to mention ripping your lungs
>>>apart. I'm not sure he needed the treatment, but it was the right thing to
>do
>>>just to be safe.
>>>Jon Shawl
>>>
>>>
>>>
>>
>>--
>>Alan D. Secor
>>e-mail: secor@btv.ibm.com
>>
>>
>>
>
>
>
>

--
Alan D. Secor
e-mail: secor@btv.ibm.com