Hi Byron:

Most of the discussion I've seen relates to electrical aspects, but there's=
 another they you should consider and that's=20
the explosion of a battery cell.
Starting during the Vietnam era military equipment that uses batteries have=
 a design requirement that they allow for the=20
explosion of one cell of the battery.  This usually involves a vent so that=
 the equipment case does not become=20
shrapnel.  I've had a battery explode (I was told by hydrogen gas build up =
that did not ignite) while charging according=20
the the specifications and was lucky that the battery panel missed me.  Of =
course there have been many instances of=20
battery puncture causing fires, like when a forklift driver new to aircraft=
 pallets started a major fire some hours=20
after the pallet of batteries was unloaded from an international flight.  T=
he authorities quickly saw the potential=20
problem if this driver had just loaded a pallet onto an airplane in the sam=
e manner.

--=20
Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html

-------- Original Message --------
>   Re: [EE] Fail-safe Safety-Critical Systems Design

--=20
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