Re: Deputies try to raise doomed sub

["William B Winner" <Winnercrew@csi.com>]

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
>
>
>