I don't recall what they used for hangers. The job was done 22 years 
ago +/-, so I don't remember all the details. My boss at the time 
handled the negotiations and everybody signed off on it (Ins co, AHJ, 
etc.). As I recall there was an issue with stainless but I really 
don't remember what. It may have been cost plus other stainless 
components were deteriorating in there also. They used to make velvet 
in the mill and this was an area with an acid bath or something similar.

The mill is near my house and has been closed as manufacturing for a 
while. It is now storage/workshop/offices and the CPVC pipe is still in there.


At 01:34 PM 4/16/2009, you wrote:
>What did you hang the pipe with?
>
>Just because someone gave permission to install a product in a 
>system outside of it's listing doesn't absolve a contractor of 
>potential negligence if the system fails or does not perform as a 
>listed component would.  That could be kind of shaky ground.
>
>Was stainless not available?
>
>
>Craig L. Prahl, CET
>Fire Protection Specialist
>Mechanical Department
>CH2MHILL
>Lockwood Greene
>1500 International Drive
>PO Box 491, Spartanburg, SC  29304-0491
>Direct - 864.599.4102
>Fax - 864.599.8439
>craig.pr...@ch2m.com
>http://www.ch2m.com
>
>
>-----Original Message-----
>From: sprinklerforum-boun...@firesprinkler.org 
>[mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Todd Williams
>Sent: Thursday, April 16, 2009 12:22 PM
>To: sprinklerforum@firesprinkler.org
>Subject: Re: CPVC in Ord Hazard
>
>Sounds like a great project for your competition.
>
>Many moons ago (my previous employer), we did a partial system in a 
>manufacturing area that was so caustic that galvanized pipe would 
>rot in less than a year. We got permission to use CPVC and it held 
>up fine. Other than that, stay away
>
>
>
>At 12:13 PM 4/16/2009, you wrote:
> >If an AHJ accepts CPVC pipe for an Ord. Group II warehouse
> >installation, is it ok to do a LH alteration to that system for office
> >space? Or is it better to just Run and make sure there is no connection
> >to you for any part in this system?
> >
> >
> >
> >I'm thinking "Don't Touch It!" Any other thoughts?
> >
> >
> >
> >Thom McMahon, SET
> >
> >Firetech, Inc.
> >
> >2560 Copper Ridge Dr
> >
> >P.O. Box 882136
> >
> >Steamboat Springs, CO 80488
> >
> >Tel:  970-879-7952
> >
> >Fax: 970-879-7926
> >
> >
> >
> >
> >
> >_______________________________________________
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>
>Todd G. Williams, PE
>Fire Protection Design/Consulting
>Stonington, Connecticut
>www.fpdc.com
>860.535.2080
>_______________________________________________
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Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, Connecticut
www.fpdc.com
860.535.2080  
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