[Jewelry making - Article 00527] - Re: [Orchid] Acetylene - Safety Information

[Rick Copeland]

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>        1.  I recently read that acetylene should not be used with
>     silver (http://www.c-f-c.com/specgas_products/acetylene.htm).  Is
>     this true?  I have used it for silver in the past during formal
>     instruction at a local university. 

    I've used acetylene successfully for years with silver.  Check the
    archives as there has been some lively debates on the plus and
    minuses of each type of gas. 

>        2.  Is a Flashback Arrestor necessary in this application
>     (using ambient oxygen)?  If so, should it be installed at the
>     regulator? 

    Yes and yes. 

>        3.  Is there a device available to specifically detect
>     acetylene gas leakage?  If so, where do I get it? 

    I just exchanged my empty acetylene tank for a full one today.  I
    asked the welding shop about gas leak detectors and they said the
    ones the can order are for commercial welding shops that need to
    comply with OSHA.  $6,000 was the price range they quoted me.  I'm
    sure there are less expensive options out there.  I recently
    installed a Kidde Carbon Monoxide and Explosive Gas detector in my
    workroom.  The instructions say it will detect propane and natural
    gas.  I have tested it with acetylene and it did trigger the alarm.
    The alarm sells for about $70 at your local home center and runs on
    household current with a battery backup. 

    Your mileage may vary and I'm not endorsing Kidde products or their
    use. I'm just stating how I am using the product and sleeping a
    little better at night... 

Rick Copeland -- Silversmith
rick.copeland AT Covad.net
home.covad.net/~rcopeland
Colorado Springs, Colorado

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