[PSUBS-MAILIST] Ballast air

Thu Mar 12 10:38:50 EDT 2015

Hi Adam,
Agreed, I also carry a Steinke Hood in the event that a ditch is needed.  I also carry an emersion suit because the water I dive in is extremely cold.  Guarded ports is a biggy, I have a couple of ports that are quite vulnerable and have had a scare already.  I am defiantly addressing that.
Hank--------------------------------------------
On Thu, 3/12/15, 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: Thursday, March 12, 2015, 10:23 AM

 Hi, 

 Egress 
 out of the sub is a different scenario and not one that I
 like to 
 entertain. 
 Obviously 
 I hope we all do everything conceivable to design the
 flooded sub scenario 
 out of existence; bullet proof hull, oversized soft ballast,
 hard drop weights, 
 jettisonable propellers, guarded ports/penetrators, strobe
 light, comms, 72 
 hours emergency life support... 

 This 
 facemask connected to a scuba tank/regulator at the moment
 of egress would be 
 the bailout solution, for shallow depths. 
 If 
 your going any deeper, the scuba regulator is very poor 
 insurance. I
 would say, even the K-250 dives 
 below this threshold, and should have all of the above 
 features.

 Adam 

 From:
 Personal_Submersibles 
 [mailto:personal_submersibles-bounces at psubs.org] On
 Behalf Of Alan via 
 Personal_Submersibles
 Sent: Thursday,
 March 12, 2015 4:32 
 AM
 To: Personal Submersibles General
 Discussion
 Subject: Re: 
 [PSUBS-MAILIST] Ballast air

 I am still not convinced. 
 In the case of a flooded submarine the 
 scrubber system wouldn't work unless you mounted
 the scrubber
 very high in the sub. Also in the situation where you
 flood the sub
 to escape, you need air on tap for the final pressure
 equalisation.
 It is reasonably comforting to see a regulator next to
 you when
 you are last person out.
 Alan

 Sent from my iPad

 On 12/03/2015, at 4:43 pm, Adam
 Lawrence via Personal_Submersibles 
 <personal_submersibles at psubs.org>

 wrote:

   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.
    ee
   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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