[PSUBS-MAILIST] Ballast air

Thu Mar 12 07:29:24 EDT 2015

Hi Adam,
I like the scuba regulator set up because there is no chance of any nasty chemical in the smoke getting through a filter.  I would love to see some pictures of your sub, do you have a project page? 
Hank --------------------------------------------
On Wed, 3/11/15, Adam Lawrence via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

 Subject: Re: [PSUBS-MAILIST] Ballast air
 To: "'Personal Submersibles General Discussion'" <personal_submersibles at psubs.org>
 Received: Wednesday, March 11, 2015, 11:43 PM

 Alan,

 Yes, there is a very
 small amount of smoke in the 
 volume of a 1-3 person submarine, compared to a building
 fire. Air filter 
 respirators cartridges, combined with scrubbing and O2
 replenishment accomplish 
 the same thing as an SCBA, but without increasing cabin 
 pressure.

 Adam

 From:
 Personal_Submersibles 
 [mailto:personal_submersibles-bounces at psubs.org] On
 Behalf Of Alan James 
 via Personal_Submersibles
 Sent:
 Wednesday, March 11, 2015 10:21 
 PM
 To: Personal Submersibles General
 Discussion
 Subject: Re: 
 [PSUBS-MAILIST] Ballast air

 OK I
 follow.
 So
 would the filter system 
 filter out the smoke?
 I
 see firemen using 
 compressed air, not filters.
 Flown
 over Houston but 
 never visited.
 Alan

 From: Adam 
 Lawrence via Personal_Submersibles 
 <personal_submersibles at psubs.org>
 To: 'Personal
 Submersibles General 
 Discussion' <personal_submersibles at psubs.org> 
 Sent: Thursday, March
 12, 2015 4:04 
 PM
 Subject: Re:
 [PSUBS-MAILIST] 
 Ballast air

 Allen,

 No, not 
 breathing pure O2, just enough to sustain you at the normal
 needed consumption 
 rate, this O2 is mixed with filtered and scrubbed cabin air
 at the canister 
 when you inhale.

 A 
 one tam sub, I am in Houston Texas.

 Adam

 From: 
 Personal_Submersibles
 [mailto:personal_submersibles-bounces at psubs.org] On 
 Behalf Of Alan James via Personal_Submersibles
 Sent: 
 Wednesday, March 11, 2015 9:46 PM
 To:
 Personal Submersibles 
 General Discussion
 Subject: Re:
 [PSUBS-MAILIST] Ballast 
 air

 So are you
 breathing pure O2 in 
 an emergency situation?
 I guess
 the only 
 time you would have a full face mask on
 is when
 there is 
 smoke in the cabin from a fire.
 If you
 breathed 
 pure O2 you would be adding more fuel to the
 flames.
 What sort
 of sub do 
 you own Adam & what part of the World are you
 from?
 I'm
 down in 
 N.Z.
 Alan

 From: Adam Lawrence via

 Personal_Submersibles
 <personal_submersibles at psubs.org>
 To: 'Personal 
 Submersibles General Discussion'
 <personal_submersibles at psubs.org> 
 Sent: Thursday, March 
 12, 2015 3:24 PM
 Subject: Re:
 [PSUBS-MAILIST] Ballast air

 Hi
 Allen,

 What 
 I have is simpler than a full blown rebreather.
 The 
 oxygen supply/flow enters the cabin at the scrubber
 canister. The canister has 
 an air filter on it already (dust/smoke/hydrogen
 sulfide...). The emergency 
 piece of equipment is a full face mask with a hose that
 connects to the scrubber 
 assembly (fan off) on the inhale side, exhale goes back into
 the 
 cabin.

 The next 
 simple version may be just a full face mask with dust/vapor
 cartridge, good 
 enough to keep your eyes and lungs clean while making a
 quick 
 ascent.

 Those 
 millionaires get all the toys.

 Adam

 From:
 Personal_Submersibles 
 [mailto:personal_submersibles-bounces at psubs.org] On
 Behalf Of Alan James 
 via Personal_Submersibles
 Sent:
 Wednesday, March 11, 2015 
 5:27 PM
 To: Personal Submersibles
 General Discussion
 Subject: Re:
 [PSUBS-MAILIST] Ballast air

 Hi 
 Adam,
 that would
 require a rebreather 
 style set up to do that.
 I believe
 they had 
 a rebreather back up on James Camerons sub.
 A bit
 expensive 
 & complicated.
 Alan

 From: Adam Lawrence via

 Personal_Submersibles
 <personal_submersibles at psubs.org>
 To: 'Personal 
 Submersibles General Discussion'
 <personal_submersibles at psubs.org> 
 Sent: Thursday, March 
 12, 2015 8:27 AM
 Subject: Re:
 [PSUBS-MAILIST] Ballast air

 For emergencies, wouldn’t you 
 use a full-face mask connected to a CO2
 scrubber and air filter 
 and pure oxygen, all on the inhale side...

 Compressed scuba air would
 increase cabin pressure and make things
 uncomfortable...

 -----Original 
 Message-----
 From: Personal_Submersibles
 [mailto:personal_submersibles-bounces at psubs.org]
 On Behalf Of hank pronk via
 Personal_Submersibles
 Sent: 
 Wednesday, March 11, 2015 10:26 AM
 To:
 Personal Submersibles 
 General Discussion
 Subject: Re:
 [PSUBS-MAILIST] Ballast air

 Brian,
 I
 don't mean 
 oxygen, I mean  regular scuba air.  I have and am sure
 all
 other subs have scuba breathing
 apparatus for emergencies like 
 smoke.  I
 take air from my ballast supply
 for that 
 purpose.  If your ballast air is
 Nitrogen
 then you will need 
 an extra tank for emergency breathing.  
 Hank 
 --------------------------------------------
 On Wed, 3/11/15, 
 Brian Cox via Personal_Submersibles
 <personal_submersibles at psubs.org>

 wrote:

 Subject: Re:
 [PSUBS-MAILIST] Ballast air
 To:
 "Personal Submersibles General Discussion"
 <personal_submersibles at psubs.org>
 Received: Wednesday, March 11, 2015, 10:18
 AM

 Yes, my oxygen will be a
 separate
 tank, or tanks.

 Brian

 --- personal_submersibles at psubs.org
 wrote:

 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] Ballast air
 Date: Wed, 11 
 Mar 2015 05:37:11 -0700

 Brian,
 You 
 must be planning to have a separate tank for emergency  air
 for
 breathing, in case of fire etc.
 Hank
 --------------------------------------------
 On Wed, 
 3/11/15, Brian Cox via Personal_Submersibles
 <personal_submersibles at psubs.org>
 wrote:

 Subject: [PSUBS-MAILIST] 
 Ballast air
   To: "PSubs" <personal_submersibles at psubs.org>
   Received: Wednesday, March 11, 2015, 2:50
 AM

   I'm planning
 on having
   3 - 300cu ft air cylinders for
 my ballast supply air.
   I noticed that if
 I get them filled with nitrogen it is

 cheaper than getting breathing or industrial air
   !   That is, until I get my own

 compressor. Brian

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