[TheForge] RE: Fact or urban myth?

[Darrell]

Liiike Forest says, stupid is as stupid does!

----- Original Message ----- 
From: "Lon Humphrey" <ironcrossforge at adelphia.net>
To: "Sponsored by ABANA" <theforge at mailman.qth.net>
Sent: Wednesday, August 30, 2006 7:40 AM
Subject: Re: [TheForge] RE: Fact or urban myth?


> it was widely recognized in the industry that acetylene
>>equipment used to store and handle the bulk product
>
> me thinks the key word there is BULK
>
> i have been a welder for 19 years and have been smithing for 22 i see so 
> many of these posts and wonder how many of the folks really have any real 
> world experiance with this stuff
> Just to clarify i learnded the old way.... gas welding first then stick 
> then tig then mig
> i cant see using hydrogen gas being any more dangerous than accetlane 
> .....oh yea never ever use a accetlane bottel while its lying on its side 
> ....BULLSHIT do it all the time and i still got all my fingies and arms 
> and leggs
>
>
> ----- Original Message ----- 
> From: "Larry Brown" <lp.brown at verizon.net>
> To: "Sponsored by ABANA" <theforge at mailman.qth.net>
> Sent: Wednesday, August 30, 2006 4:45 AM
> Subject: Re: [TheForge] RE: Fact or urban myth?
>
>
>> Thanks to Dave, as more and more people talk of hydrogen it is wise to 
>> learn what you can do and shouldn't.
>> Larry Brown
>>
>> At 09:33 PM 8/29/2006 -0500, you wrote:
>>>Here is the answer from my friend who worked many years in the
>>>compressed gas industry.
>>>dave mudge
>>>----------------------------------------------------------------------------------------------------------
>>>I don't have the reference's any more because I left my library with the 
>>>job
>>>However, it was widely recognized in the industry that acetylene
>>>equipment used to store and handle the bulk product should be burned
>>>when decommissioned. One of the first cousins of Acetylene was
>>>determined to be so dangerous that our corporation finally refused to
>>>accept any orders for products containing it.  The hazard of metal
>>>acetylides is real but may not be the culprit here.  Acetylene as
>>>produced is actually a mixture of a number of compounds which in
>>>combination make a kind of microscopic varnish film with the acetylene
>>>on all surfaces of the equipment. Exposed do high pressure, not
>>>necessarily hydrogen, or friction from high velocity gas movement, it
>>>may decompose.  Hydrogen is a particularly good candidate to stimulate
>>>decomposition because of its unique thermal properties as a compressed
>>>gas.
>>>For the view point of a former member of  a safety committee
>>>responsible for specifying the equipment and safe handling procedures
>>>for compressed gases I conclude with the following statement:
>>>In the normal course of events  no equipment suitable for acetylene
>>>service  is also suitable for hydrogen.  Both are chemically and
>>>physically dangerous to handle.  The compressed gas industry has in
>>>its over one hundred years of experience  developed, in conjunction
>>>with federal regulators and  industrial manufactures, a set of rules
>>>of thumb and equipment specification that allow most sensible people
>>>to use materials that are wildly dangerous without injury.  Do not use
>>>acetylene equipment for hydrogen service.  The specifications of the
>>>equipment are incompatible
>>>--------------------------------------------------------------------------------------------------------------------
>>
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