California passed a code amendment (a very sensible one methinks) that removes
the word listed from the prescription in NFPA 25. So our statewide requirement
for all systems, regardless of which standard is applied, is that a pre mixed
solution shall be used and the concentration shall be no greater than a
threshold maximum for glycol and glycerine products. There articles for the
various concentrations depending on lowest expected temperatures. I'm not sure
if the same tables occur in the sprinkler installation standards, but for
service and maintenance we at least have a standard of care.
Steve
-------- Original message --------
From: "Travis Mack, SET" <[email protected]>
Date: 07/29/2015 4:35 PM (GMT-08:00)
To: [email protected]
Subject: Anti-freeze
A bit of a discussion with an engineer on a project:
Is it permitted to install anti-freeze in a system (NFPA 13, 2013 and
IBC 2012 are governing documents) employing standard spray uprights and
pendents using a factory pre-mix anti-freeze solution in a car
dealership occupancy?
My answer is no because TIA says only use listed mixture, and to my
knowledge, none is available at this date.
Engineer states that the TIA permits it (but it is only allowed in 13D),
so we can use pre-mix.
What does the forum collective think?
--
Travis Mack, SET
MFP Design, LLC
2508 E Lodgepole Drive
Gilbert, AZ 85298
480-505-9271
fax: 866-430-6107
email:[email protected]
http://www.mfpdesign.com
https://www.facebook.com/pages/MFP-Design-LLC/92218417692
Send large files to us via: https://www.hightail.com/u/MFPDesign
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