[TheForge] RE: Fact or urban myth?

[Michael]

Thanks Dave.
Mikey

-----Original Message-----
From: theforge-bounces at mailman.qth.net
[mailto:theforge-bounces at mailman.qth.net] On Behalf Of Dave Mudge
Sent: Monday, August 28, 2006 7:44 PM
To: Sponsored by ABANA
Subject: Re: [TheForge] RE: Fact or urban myth?

I have a friend that worked in the compressed gas industry for many many
years.
I have forwarded this question to my friend and I think that we will
have a qualified answer shortly.
dave mudge

On 8/28/06, James Binnion <jbin at well.com> wrote:
> The only way that I can think of that this could be a problem is if
> there were residues of the acetylene in the equipment and you were to
> exceed 15 PSI. The acetylene wants to make metallic acetylides at
> high pressure and these are unstable and will explode. but I have
> never heard of this as a danger before.
> Jim
> On Aug 28, 2006, at 2:03 PM, Michael wrote:
>
> >
> >
> > Recently I came across a warning against using hydrogen in welding
> > equipment
> > previously used with acetylene, due to the possibility of explosion
> > when
> > hydrogen gas encounters acetylene residues.
> >
> > I wrote to the person who had posted this warning on his site, and
> > received
> > his assurances that the danger was very real, and that he had
> > checked his
> > facts with knowledgeable people who were involved in both oxy-
> > hydrogen and
> > oxyacetylene welding back in the thirties and forties.
> >
> > Nevertheless, I can find no mention of this hazard anywhere else.
> > If someone
> > can throw more light on the issue, I'd be obliged.
> > Mikey
> >
> >
> >
> >
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> James Binnion
> jbin at well.com
>
>
>
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