First of all, you have no business lying about me or the WKPP just because
you do not have a single reason that you can tell us to use one of these
ridiculous lights. Secondly, you don't have the experience or resume to tell
me I don't know what I am talking about in my specifications for lights used
in the WKPP. Thirdly, I am so sick of clowns who have no experience and are
full of "bright ideas" trying to tell me what works when they just plain
don't have a clue. Your little switch idea is typical of somebody who does
not get it at all and has never done it at all.

Read what I wrote again.

The fact is that when a canister light explodes on the surface, as used to
happen quite often with wet cell nicads , the lid fractures , you moron.
When they explode underwater, the o-ring comes out if near the surface. We
don't turn our lights on at the surface or after they have been used.

The issue, again, you idiot, is that if the batteries offgas, the pressure
is enough to push out the oring when you surface and allow the hydrogen to
escape . The other issue is that we can see from the start if the o ring is
in place - you can not with the bullshit light. Read the rest.

You really do not deserve anything but contempt for this. As per the usual,
the strokes feel the need to lie about us every time we tell the truth about
them. You match up to my experience and then get back to us all on how it
should be done. How much did you pay for your MLS light, by the way - LOL.
They go well with bondage wings , helmets, and the rest of the clown suit.


-----Original Message-----
From: Ole Martin Pedersen [mailto:olepe@in*.ed*.nt*.no*]
Sent: Wednesday, April 03, 2002 2:38 AM
To: Techdiver@Aquanaut.Com
Subject: Re: dive rite light


> The canister is a total wetdream.
> it and has captured o-rings. Only a moron would not understand
> the problem there. For one thing, we use a surface o-ring only so that
> should the light explode, the ring will blow out.

George, I believe you've had scooters exploding in the WKPP, but have ever
lights exploded?

In an explosion, the gas expands _extremely_ rapidly, and pressure from an
explosion always expands perpendicular to the 'explosive'. (Toward the
walls)

If a canister is to explode, almost all the pressure is on the canister
walls. The area of the o-ring is way to small to "let out the pressure of
an explosion".

The only way of making a big enough "safety-valve" to let out gas from a
canister exposion, is getting rid of the metal hatches and leave the lid
loose. (I am NOT recommending this) The problem then is that
you've made a projectile.

My point is that there is no way of lessing the damages of a exploding
canister.

The only thing you can do is preventing the making of gas, and preventing
sparks from accuring. Offgasing is a by far greater problem in scooters,
which start and stop all the time.

In my opinion, the switch in some lights is the problem, as they switch
4.1 Ampere - or more. Ill claim that a switch ALWAYS sparks when
switching this big currents. (The switch in EE lights is not Ex-certified,
I assume?) Ex-certified switches would be a great way to improve lights.

--
Ole Martin Pedersen <olepe@in*.ed*.nt*.no*>

PS: Before you start yelling, calling me an asshole, show me that the
o-ring away is enough to let out all the gas of an hydrogen-air explosion.
An explosion is not a fart: It is tremendous.

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