[PSUBS-MAILIST] onboard O2

[Rick Patton via Personal_Submersibles]

Hank,

I could be wrong but the way I see it, if you have an HP failure in an
airplane you will never leave one atmosphere and you can crack a window to
lessen the fire hazard from a high 02 level where as if the same happen in
your boat, you are going to be pressed down in internal depth pretty
quickly before you can reach the shut off valve on the bottle and you can't
open a window to get rid of the high 02 level and then you also have the
fact that the boat will equalize with the outside pressure well before you
reach the surface.
I may be over paranoid about this issue as I and 8 others were pressed
accidentally while in Sat from 300' to a little over 400' while we were all
asleep riding out a storm in the North Sea before someone woke up and
caught the problem. I'll tell you the story off line sometime.

Rick

On Sun, May 7, 2017 at 7:05 AM, hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Hi All,
> I have purchased a few new medical O2 bottles for Elementary 3000.  I got
> a bit worried after the O2 piping and penetrating discussion.  I will have
> internal O2 supply and I admit I had some reservations because the big guys
> don't do that.  Then! this morning I was watching a show on TV about a
> Saudi Prince flying around in his beautiful two seater glider.   Low and
> behold, there it was, behind  the pilot, a O2 bottle.  If airplanes can
> carry O2 tanks inside the plane, why not a submarine?
> Hank
>
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