[PSUBS-MAILIST] Fw: Gamma

Fri Mar 17 18:22:02 EDT 2017

Thanks Alan

Rick

On Fri, Mar 17, 2017 at 12:13 PM, Alan via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Rick,
> I have purchased a few from this company in Washington state.
> http://www.emtmedicalco.com/PEDIATRIC-REGULATORS-0-4-LPM-CGA-540-5404.htm
> I think others Psubbers have also. You want the paediatric regulator with
> your required fitting.
> Alan
>
> Sent from my iPad
>
> On 18/03/2017, at 10:34 AM, Rick Patton via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Can anyone recommend a good 02 flow meter without a regulator as I am
> coming into the sub as LP o2.
>
> Rick
>
> On Sun, Mar 12, 2017 at 9:45 AM, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> Seems to me a medical O2 tank inside the sub with a regulator venting
>> into the compartment is the safest.  I also carry a 35cuft O2 bottle to
>> refill the medical tank.
>> Hank
>>
>>
>> On Sunday, March 12, 2017 1:28 PM, Sean T. Stevenson via
>> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>
>>
>> The NASA thing was because of the 100% oxygen environment, which makes an
>> inferno out of anything burning. This was exascerbated by the fact that
>> they had a tendency to use tons of velcro everywhere, which became a fuel
>> source in the elevated oxygen environment. If your cabin environment is
>> only air, as it should be, then the fire risk from oxygen piping exists
>> only from the metals themselves or any entrained hydrocarbons.  Machining
>> operations which create sharp or thin edges within fittings can make the
>> parts internally susceptible to burning in the presence of a source of
>> ignition, which adiabatic heat from high rates of compression (i.e. a fast
>> acting oxygen valve) in combination with residual hydrocarbons in the
>> fittings / piping can represent.  Also, all materials used in the personnel
>> space, which includes but is not limited to the materials used in hoses,
>> must be self-extinguishing / fire resistant. A hose burning will ! likely
>> cause it to rupture.
>> Sean
>>
>>
>> On March 12, 2017 12:40:45 PM MDT, Rick Patton via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>> Thanks for the input guys.
>>  My 02 bottles will be medical bottles that come already cleaned and be
>> outside with 02 cleaned first stage regulators on them to go to LP right
>> away and then I'll buy 02 cleaned LP hose to go to the SS threw hull
>> fitting that's welded to the hull.
>>  The sked 80 SS threw hull, 90 degree street ell and 1/4" turn stop valve
>> weren't cleaned though so those should be easy to clean based on your
>> input. I'll also go with factory 02 cleaned rubber hose to the flow meter
>> so it would be just those three thing.
>> Just out of curiosity though, if a fire occurred from
>> carbon/contamination  or whatever, would the fire just burn very briefly in
>> the hose and then go out or would there be an explosion that would rupture
>> the hose? As I recall, the unfortunate fire that occurred at NASA in the
>> capsule with the three astronauts, wasn't that a quick fire with no
>> explosion?
>>
>> Rick
>>
>>
>> On Sun, Mar 12, 2017 at 7:49 AM, Sean T. Stevenson via
>> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>
>> Not all detergents are the same in this regard. You need something with a
>> high affinity for hydrocarbons which is residue free. Simple green and
>> formula 409 are mentioned in the Oxygen Hacker's Companion, but I always
>> use orange TKO. I use vinegar on regulator and valve parts to remove
>> corrosion, and will scrub these after the vinegar soak, and then wash them
>> with an orange TKO solution as the next step before rinsing with distilled
>> or filtered water. Cylinders just get a hot orange TKO solution wash,
>> followed by a clean water rinse.
>> I wouldn't use solvents for cleaning lines for oxygen service, although
>> you can if you subsequently flush the lines to remove all traces of the
>> solvent afterwards. A quick detergent solution flush, followed by a clean
>> water rinse, followed by blowing out with clean dry air or nitrogen should
>> suffice. I like to pull vacuum on everything I put together to ensure that
>> any remaining water or volatiles are evaporated, but that may not be
>> practical for everyone.
>> Note also that I only ever bother with this for 100 % oxygen service at
>> high pressures. Most of the time, I assemble tubing and fittings as
>> delivered, blow it out once with nitrogen to remove any loose particles,
>> and call it a day.
>> Sean
>>
>>
>> On March 11, 2017 11:50:54 AM MST, Brian Cox via Personal_Submersibles <personal_submersibles at psubs.
>> org <personal_submersibles at psubs.org>> wrote:
>>
>> Rick,           I haven't, but my understanding is that just soap and
>> water is sufficient.  Using a dish washing liquid.
>>
>> Brian
>>
>> --- personal_submersibles at psubs. org <personal_submersibles at psubs.org>
>> wrote:
>>
>> From: Rick Patton via Personal_Submersibles <personal_submersibles at psubs.
>> org <personal_submersibles at psubs.org>>
>> To: Personal Submersibles General Discussion <personal_submersibles at psubs.
>> org <personal_submersibles at psubs.org>>
>> Subject: Re: [PSUBS-MAILIST] Fw: Gamma
>> Date: Sat, 11 Mar 2017 08:09:48 -1000
>>
>> has anyone 02 cleaned the insides of tubes or fittings before using the
>> solvent method?
>>
>> Rick
>>
>> On Sat, Mar 11, 2017 at 5:37 AM, Gregory Snyder via Personal_Submersibles
>> <personal_submersibles at psubs. org <personal_submersibles at psubs.org>>
>> wrote:
>>
>> Indeed!!! Awesome boat!
>>
>> On Mar 11, 2017, at 7:19 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.
>> org <personal_submersibles at psubs.org>> wrote:
>>
>> Thanks' guys, I am pretty pleased with how Gamma has turned out.  I can
>> not think of a single thin! g I want to do her now.  I have always had a
>> diesel engine in mind but  that might have been a want, not a need.
>> Hank
>>
>>
>> On Friday, March 10, 2017 7:25 PM, Douglas Suhr via Personal_Submersibles
>> <personal_submersibles at psubs. org <personal_submersibles at psubs.org>>
>> wrote:
>>
>>
>> Beautiful Hank! What a fine sub you've got there. ~ Doug S.
>>
>>
>> On 3/10/17, Rick Patton via Personal_Submersibles
>> <personal_submersibles at psubs. org <personal_submersibles at psubs.org>>
>> wrote:
>> > Lookin good Hank!
>> >
>> > Rick
>> >
>> > On Fri, Mar 10, 2017 at 1:58 PM, Alan via Personal_Submersibles <
>> > personal_submersibles at psubs. org <personal_submersibles at psubs.org>>
>> wrote:
>> >
>> >> Thanks Hank,
>> >> I enjoy watching! the videos. All the best for the ensuing dive & look
>>
>> >> forward
>> >> to hearing the report.
>> >> Alan
>> >>
>> >> Sent from my iPad
>> >>
>> >> On 11/03/2017, at 11:28 AM, hank pronk via Personal_Submersibles <
>> >> personal_submersibles at psubs. org <personal_submersibles at psubs.org>>
>> wrote:
>> >>
>> >> New video of arm assembly on Gamma.
>> >> Hank
>> >>
>> >>
>> >> On Friday, March 10, 2017 3:27 PM, xxx xxxxx <mp13 at live.ca> wrote:
>> >>
>> >>
>> >> https://www.youtube.com/watch? v=S9HGAFanbNE
>> <https://www.youtube.com/watch?v=S9HGAFanbNE>
>> >> <Image 2017-03-10 at 3.27 PM.jpg>
>> >>
>> >>
>> >> <Image 2017-03-10 at 3.27 PM.jpg>
>> >! >
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>> >>
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