[PSUBS-MAILIST] Project Pilot Fish

Tue Nov 15 16:16:12 EST 2016

Hello Alan, and everyone,

Following our trial dives in the Channel last summer, here is a video aired
on French TV last week end:
https://www.youtube.com/watch?v=Uv9kIQpqLSU&t=42s

As a follow up on the subject of the thread, I got my hands on a H2
compensated CO sensor, and a non H2 compensated CO sensor which I used for
some tests monitoring both H2 and CO separately:

-the cabin of the sub without the batteries nor humans gives no CO
whatsoever, that is after a couple of weeks closed with a bit of sun heat.
So for me the paint as a CO source is cleared. It still does not smell good
inside, so I guess I will do a full gas chromatography just to know what is
inside. Bets are on... btw for those interested in long dives, I found
useful documentation online " spacecraft maximum allowed concentration for
selected airborne contaminants"

-the batteries, which are sealed AGM  type, still leak off a tiny amount of
H2, about 10mL per hour of H2 when idle, fully disconnected. I initially
thought this could be due to poor charging or discharging practice, but
even my two reserves batteries behave this way, and those have been handled
carefully since I bouth them 2 years ago.
So beware sealed batteries may not be perfectly sealed... still far far
below explosivity level though...

regards,
Antoine

regards,
Antoine

On Mon, Aug 8, 2016 at 8:23 PM, Alan via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Antoine,
> if you are not already under the water again,
> what about changing the batteries for sealed lead acid batteries.
> These won't let out any gas unless overcharged or on high discharge.
> Alan
>
>
> Sent from my iPad
>
> On 8/08/2016, at 4:40 am, Antoine Delafargue via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> yes we bag the batteries,
> the paint is two years old, we will see if there is still readings after
> that.
> regards
> Antoine
>
> On Sun, Aug 7, 2016 at 6:15 PM, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> Antoine,
>> How are you making a cover?  Are you simply bagging the batteries?
>> I actually thought it was the paint also.
>> Hank
>>
>>
>> On Sunday, August 7, 2016 9:56 AM, Antoine Delafargue via
>> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>
>>
>> Hi Alan and everyone
>>
>> Ok Carsten you may be right. We tested the batteries and they do trigger
>> the CO readings. so that is hydrogen right? no possibility to emit CO for a
>> battery?
>> but they do so when disconnected, neither when charged nor discharged!
>> which is puzzling.
>>
>> for now we are making a cover for the batteries and we ll put our
>> catalyst Inside.
>>
>> regards
>> Antoine
>>
>>
>> On Sun, Aug 7, 2016 at 4:49 AM, Alan via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>> I wonder if there is anything coming out of the interior paint over time.
>> sometimes paint takes months to dry properly.
>> Or I have heard of the monitors being upset by paint fumes even though
>> they are not CO. You could heat up a section of paint work to help
>> accelerate
>> any leaching of chemicals, & tape a plastic bag with your CO meter in it
>> over the heated area of paint. If this is the problem go home & heat the
>> interior
>> for as many weeks as it takes.
>> You will get there eventually. Most of the hard work has been done
>> already.
>> All the best.
>> Alan
>>
>>
>> Sent from my iPad
>>
>> On 7/08/2016, at 12:22 pm, Antoine Delafargue via Personal_Submersibles <personal_submersibles at psubs.
>> org <personal_submersibles at psubs.org>> wrote:
>>
>> not sure H2 could be the culprit, as we charge batteries with open hatch
>> and then when diving we use minimal power levels.
>>
>> We do have active charcoal and Sofnocat H2/CO catalyst (which by the way
>> was warm when the CO level became high and we pulled it out)
>>
>> regards
>> Antoine
>>
>> On Sat, Aug 6, 2016 at 9:38 PM, MerlinSub at t-online.de via
>> Personal_Submersibles <personal_submersibles at psubs. org
>> <personal_submersibles at psubs.org>> wrote:
>>
>> Has Pilotfish Activcoal filter? Katalyst for H2 burning?
>> CO2 scrubber works normal on a little higher CO2 niveau than normal.
>> Some O2 mask for half our all 6 hours use or so could make it a better
>> stay.
>>
>> Two person in such a tiny space for so long..
>> B.Voyage.. Carsten
>>
>>
>>
>>
>> -----Original-Nachricht-----
>> Betreff: Re: [PSUBS-MAILIST] Project Pilot Fish
>> Datum: 2016-08-06T18:29:49+0200
>> Von: "emile via Personal_Submersibles" <personal_submersibles at psubs.o rg
>> <personal_submersibles at psubs.org>>
>> An: "'Personal Submersibles General Discussion'" <personal_submersibles at psubs.o
>> rg <personal_submersibles at psubs.org>>
>>
>>
>>
>> Carsten , Antoine,
>>
>> The batteries are not charged inside the sub. If the CO sensor is so
>> sensitive on H2, this might be the problem.
>> Sensor electronics failure due to the high humidity is also a possibility.
>> I never measure as my mission duration is much shorter.
>>
>> Emile
>>
>>
>> *Van:* Personal_Submersibles [mailto:personal_submersibles-
>> bounces at psubs.org <personal_submersibles-bounces at psubs.org>] *Namens *
>> MerlinSub at t-online.de via Personal_Submersibles
>> *Verzonden:* zaterdag 6 augustus 2016 18:12
>> *Aan:* Personal Submersibles General Discussion
>> *Onderwerp:* Re: [PSUBS-MAILIST] Project Pilot Fish
>>
>> Antoine - if my CO Monitor on the Euronaut  shows me 300 ppm CO this
>> means probably it is 60 ppm H2.
>> The sensor count both and shows H2 fifes time higher than it is. Will see
>> what the blood test shows.
>>
>> Do you charge batteries inside the sub during the Travel?
>>
>> vbr Carsten
>>
>>
>>
>> -----Original-Nachricht-----
>> Betreff: Re: [PSUBS-MAILIST] Project Pilot Fish
>> Datum: 2016-08-06T17:31:39+0200
>> Von: "Antoine Delafargue via Personal_Submersibles" <personal_submersibles at psubs.o
>> rg <personal_submersibles at psubs.org>>
>> An: "Personal Submersibles General Discussion" <personal_submersibles at psubs.o
>> rg <personal_submersibles at psubs.org>>
>>
>>
>>
>> Hello everyone,
>>
>> we had to abort our trip not far after the beginning, as we detected
>> quite a lot of carbon monoxide build up in the cabin, and could not find
>> what it was and how to manage it. it basically reached 300ppm after 10
>> hours which is huge. We had brought some catalytic filter to human CO
>> production twenty times lower than that. So the catalyst filter was not
>> really able to get the rate down. It is not oxygen pollution.
>> The sensor may be off but we just did a blood test confirming level a bit
>> above the normal levels.
>> that leaves maybe some chemicals like some glue we took in the tool box
>> for repairs...
>>  It would have been too dangerous to be at sea with such creeping CO
>> level.
>>
>> We probably now cannot make it for this tide window. We ll decide tonight
>> what we do
>>
>> regards
>> Antoine
>>
>> On Sat, Aug 6, 2016 at 3:09 PM, James Frankland via Personal_Submersibles
>> <personal_submersibles at psubs.o rg <personal_submersibles at psubs.org>>
>> wrote:
>> Hi Emile,
>> Do you know when the surface boat will be here in Guernsey?  I would like
>> to go and meet them maybe.
>> James
>>
>>
>> On Friday, 5 August 2016, emile via Personal_Submersibles <personal_submersibles at psubs.o
>> rg <personal_submersibles at psubs.org>> wrote:
>> Hi Alan,
>>
>> I also wanted t notify the group about the start. The Fb page of the
>> project
>> is the quickest link for info with sometimes near live video.
>> A friend who supplied the comsets will be on the surface vessel from
>> Guernsey to st. Malo
>> The air quality  or bad luck can cause failure; not the sub  or the crew!
>>
>> Regards, Emile
>>
>> -----Oorspronkelijk bericht-----
>> Van: Personal_Submersibles [mailto:personal_submersibles-
>> bounces at psubs.org <personal_submersibles-bounces at psubs.org>]
>> Namens Alan via Personal_Submersibles
>> Verzonden: vrijdag 5 augustus 2016 14:39
>> Aan: Personal Submersibles General Discussion
>> Onderwerp: [PSUBS-MAILIST] Project Pilot Fish
>>
>> I have just seen on Facebook that Project Pilot Fish, where the guys are
>> peddling their submarine across the English Channel, has started. I saw a
>> video of them being towed out to sea. Emile did a lot of the build.
>> Hope they make it, but have my doubts as it is quite a feat.
>> If anyone (Emile) can update the group on the progress, it would be
>> appreciated.
>> Antoine has done an amazing job bringing this all together & getting
>> sponsorship.
>> Alan
>>
>>
>> Sent from my iPad
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