Out of curiosity:
How will the annual testing of the antifreeze be accomplished? 4.2.4 (2007), Before freezing weather each year, the following procedure shall be performed: (1) Solution in the entire antifreeze system emptied into convenient containers. (2) Solution brought to the proper specific gravity by adding concentrated liquid as needed, or a new solution be prepared, in accordance with 8.3.3. (3) System refilled with the new or remixed solution Not to mention the sampling "...two or three times during the freezing season..." in the Annex (4.2.4) If these are, or if some of these are CPVC systems won't removing the sprinklers in the future to facilitate antifreeze replacement be a concern (difficulty in backing out sprinklers without breaking fittings)? What am I missing? I'm working on several levels to educate AHJ's, owners, contractors, politicians, the general public, and general contractors regarding residential sprinkler systems and when I'm asked about antifreeze these are the questions I pose. Scott Futrell (763) 425-1001 Office (612) 759-5556 Cell -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Jim Johnston Sent: Monday, December 21, 2009 12:02 PM To: [email protected] Subject: Residential Anti-Freeze Sytems Does anybody on the forum have experience with residential antifreeze? We have a community in Central Washington where sprinklers are required period no exception, the homes are high-end getaway homes. Some of the clients want antifreeze as a backup measure for freeze protection; we install Firefighter GL from the Noble Company in these systems all the components are piped in conformance with NFPA methods. We hydro the systems with water (AHJ makes us go 200 psi) then due a bucket test with water, we then drain the system and pull heads at the low points to get the remaining water out. We then pump the glycerin in and pull heads at the high points until the glycerin comes out, once filled we pump the solution up to about 10 psi above the static conditions of the water supply. Does this sound appropriate? Jim Johnston, P.E. Fire Protection Engineer Inland Fire Protection, Inc 1100 Ahtanum Road Yakima, WA 98903 Phone 509-248-4471 Fax 509-248-1180 [email protected] _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
