[PSUBS-MAILIST] EBA!!!
Hugh Fulton via Personal_Submersibles
personal_submersibles at psubs.org
Thu Aug 24 18:26:14 EDT 2017
Hi Scott, Pencil me in but would like to see a photo, size, connections
etc. and explanation of it. You make some good points on testing the smoke
filled compartment etc. My domes and hatch are all good for 15 psi
internal pressure and relief valves are 2 x 2" full flow. Thanks for the
opportunity. Hugh
-----Original Message-----
From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
On Behalf Of via Personal_Submersibles
Sent: Friday, 25 August 2017 2:25 AM
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] EBA!!!
Hank,
I completely understand being so into the project a lot of "what if"
scenarios are never considered. That is one of the reasons, of the 14 people
that work on Pisces VI, one of them does nothing but safety and writing the
operations manual. The Pisces VI used a EBA built by Drager called the
Oxy-SR 30M. It is basically the same thing KISS and Pisces developed except
it only lasted 30 minutes, did not have the ability to hook up comms, and
costs more.
The Pisces VI has a lot more safety devices built into her, most of which
are over kill for a Psub, but this is an area where I see most of the psubs
lacking (including my own KW350 "Trustworthy").
Thank you,
Scott Waters
> -------Original Message-------
> From: hank pronk via Personal_Submersibles
> <personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion
> <personal_submersibles at psubs.org>
> Subject: Re: [PSUBS-MAILIST] EBA!!!
> Sent: Aug 24 '17 05:40
>
> Scott,
> I have to admit that I have not put so much thought into that
> scenario. I think because I (we) spend so much time and effort
> installing wiring with fuses and breakers that I have a false sense of
> security where short circuits are concerned. I am glad you brought it
> up and I am sure in the future you will be pointing out more risk
> assessments. We are lucky to have you with us.
> What did Pisces VI have originally?
> Hank
>
> On Wednesday, August 23, 2017, 11:22:46 PM MDT, via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
> I guess I should mention some other reasons why this unit is worth it
> *It has a 3hr breath time *It can be hooked up to u/w comms to keep
> communications with the surface while still breathing safe air *It
> is compact (unlike the BioMarine units that a lot of submarines use
> for their EBAs) *Fully enclosed mask which makes donning way faster
> than a reg and mask that most BIBS use *All parts are professionally
> built to the KISS standard. (If you have ever dove a KISS rebreather
> you will know what I mean
>
> Probably one of the most important things I learned at my month at
> sea with Woods Hole and the DSV Alvin is the importance of actually
> running realistic drills of emergency situations. This was made
> bluntly obvious to me when we really started talking about it. For
> example has anyone on psubs actually done a smoke in cabin drill from
> operational depth? I think if you do you will be shocked. Trying to
> don a BIBS and mask, ensure passengers get their BIBS and mask donned,
> locate the issue, isolate the issue, get the submarine on it's way up,
> communicate with the surface, on the way up (which is probably at a
> full blow), slow the accent, vent the cabin from the BIBS at a slow
> rate so you don't blow a viewport or blow the hatch dogs and flood the
> submarine at 10 to 30 feet likely drowning everyone. Now that you have
> done this with a drill add the stress level and I think you will see
> why it is unacceptable. I know there was a comment on a hour of BIBS
> usage only brought up the p!
> ressure about 15psi. I would challenge you to do the calcs to see at
> what pressure a viewport or the hatch fails from internal pressure. I
> think again you will be shocked.
>
> I have learned a lot in my career with submarines and I know psubs is
> committed to safety above all other and I would love to help make it
> safer. This is the reason why I am pushing this so hard and sharing
> the discount. If you take nothing else from this e-mail, then I urge
> everyone to actually run their emergency plans under controlled
> circumstances then evaluate afterwards and ask, "with the stress level
> of a real situation, is this a good plan?".
>
> Thank you,
> Scott Waters
>
> > -------Original Message-------
> > From: Alan via Personal_Submersibles
> <personal_submersibles at psubs.org> > To: Personal Submersibles
> General Discussion <personal_submersibles at psubs.org> > Subject: Re:
> [PSUBS-MAILIST] EBA!!!
> > Sent: Aug 23 '17 22:43
> >
> > Brian,
> > I am not an expert on rebreathers but > in a submarine, could
> you have a lung with full face mask & 3 hoses > attached to it. One
> hose pushes on to the submarines O2 outlet, > & the other 2 to your
> CO2 scrubber inlet & outlet. Manually control > the volume of the
> lung or set up some sort of bellows add system!
> > In a 1 ton volume submarine you would have over an hour of
> breathing > off a standard regulator & air before you doubled the
> pressure inside > the sub anyway.
> > I am installing ptfe insulated wiring on the inside of my sub to
> avoid > any > fires with that, but you can't guarantee what's in
> all the electronics > you > put in your sub!
> > Alan
> >
> > Sent from my iPad
> >
> > On 24/08/2017, at 3:11 PM, Brian Hughes via Personal_Submersibles
> > <personal_submersibles at psubs.org> wrote:
> >
> > > My friend Tom Rose's $100.00 USD rebreather. Unfortunately, a
> few > > years ago he died of a heart attack. Tom was a character.
> > >
> > > I've been contemplating making something similar out of a piece
> of > > acrylic pipe, like an old style canister light battery
> holder, and > > an MSA mask. Add a stub for O2 addition. Before I
> got into this > > psubs hobby I use to build DIY mixed gas
> rebreathers.
> > >
> > >
> >
>
> http://web.archive.org/web/20080420110800/http://www.atlimp.com/pend2.
> htm
> > >
> > > Get Outlook for Android
> >
> > > _______________________________________________
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> Personal_Submersibles at psubs.org > >
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>
> >
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