RE: [PSUBS-MAILIST] Hydrogen Build-up

["Stephen Pearce" <sjpearceqld@bigpond.com>]

Ian 

That web site is a great resource.

Much appreciated!

Regards

Steve P

-----Original Message-----
From: owner-personal_submersibles@psubs.org
[mailto:owner-personal_submersibles@psubs.org] On Behalf Of Ian
Roxborough
Sent: Thursday, 13 April 2006 1:33 AM
To: personal_submersibles@psubs.org
Subject: Re: [PSUBS-MAILIST] Hydrogen Build-up


Hydrogen gas is flammable or explosion at concentrations above 4%.
http://www.llnl.gov/es_and_h/hsm/doc_18.04/doc18-04.html#Table1

Ian.

On Wed, 12 Apr 2006 18:59:15 +1000
"Stephen Pearce" <sjpearceqld@bigpond.com> wrote:

> G-day all
>  
> From the material I have been reading and what I remember Hydrogen gas
> is formed in lead acid batteries when charging and discharging. My
> understanding is that if you ventilate the battery compartment with
the
> atmosphere when running on the surface and the air in the pressure
hull
> when submerged this can stop a BIG BANG! 
>  
> Can anyone suggest the amount of Hydrogen as a % of the Subs
atmosphere
> is required for an explosion to occur? Is there such a thing as a
> Hydrogen Scrubber? Is hydrogen produced more readily when charging or
> discharging the batteries?
>  
> By contributing to this string the life you save could be mine. :-)
>  
> Regards
>  
> Steve P
> 



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