I think this room is remote from the building. Would have to cross
unconditioned space to reach it.

Mike Hill

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of
[email protected]
Sent: Tuesday, March 20, 2012 2:58 PM
To: [email protected]
Cc: [email protected];
[email protected]
Subject: Re: Heat Tracing


Jim,

Maybe I'm missing something, but is a small electric heater to keep the room
at 40F out of the question?

Jim


James L (Jim) Roberts, PE/SET |FLUOR|Director-Fire Protection Engineering|
Greenville, SC USA|[email protected]|IODC 20.5149 |864.281.5149|
Int-001.864.281.5149|



From:   <[email protected]>
To:     <[email protected]>
Date:   03/20/2012 01:05 PM
Subject:        Heat Tracing
Sent by:        [email protected]



I'm working on a four level student housing project (NFPA 13R) at the
University of New Mexico where we have a single unheated trash room that
can't be reached with the wet sprinkler piping.  The only options I'm aware
of are either a dry system, preaction system, or an anti-freeze loop.
Since either option would only be serving a single sprinkler head, I found
that in NFPA 13, 2007 section 8.16.4, listed heat tracing is allowed but
must be specifically listed for use on branch lines and must be supervised,
and specifically listed for use on branch lines.

Of course, this head is at the end of the system, so I'm wondering if
there's anything that wouldn't have to be traced all the way back to the
riser.  I'm also wondering if this would even apply since we're using NFPA
13R on this project.

Thanks in advance for your help.

Jim Thiesse
Aero Automatic Sprinkler

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