[PSUBS-MAILIST] onboard O2

[james cottrell via Personal_Submersibles]

Hi Alan,
My hull volume is 71 cubic ft. What size O2 bottles could I carry inside according to G.L. rules?
Thanks,
Greg

      From: Alan via Personal_Submersibles <personal_submersibles at psubs.org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
 Sent: Sunday, May 7, 2017 6:14 PM
 Subject: Re: [PSUBS-MAILIST] onboard O2
   
Hi Hank,here are the G.L. rules regarding O2 storage inside the hull.   " For storage of the oxygen bottles within the pressure hull the volume of the bottle is to be restricted in such a way that the pressure does not exceedby one atmosphere & the O2 content does not  exceed 25% by volume if thecomplete contents escape."   I have seen a burst disk on a tank go & the tank wasn't at any elevatedheat.Alan

Sent from my iPad
On 8/05/2017, at 9:15 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:


Rick,Valid points for sure, but in my case I have small bottles instead of one large bottle.  Also the regulator fits directly to the tank, so the risk is so minimal.  It comes down to our own personal experiences and comfort level.  If I have a leak, the alarm will scream before the pressure is an issue.  If you are real concerned about over pressures, pick up a small 12 v compressor and plumb it into a small tank to get rid of the pressure.  That is one of the benefits of Gamma's internal HP compressor.Hank 

    On Sunday, May 7, 2017 11:33 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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