Good morning. I've looked at the flyer briefly and it certainly is moving in the right direction. With record lows in Minneapolis and many other locations that are colder than -25°F in the northern tier of states I wouldn't do it unless it was a loading dock or somewhere where water damage could be limited. It only takes one year of not testing it and really (undefined 'really') cold temperatures and you have a water loss and system out of service. I understand the nitrogen cost and owner push back. It is unfortunate, but it is what it is. I believe the long-term fire protection we all long for is dependent on educating owners in many respects and that is one of those. Nitrogen is necessary, IMHO, to extend dry systems with black steel schedule 10 piping from ten (without nitrogen) to twenty years or more with nitrogen.
Scott Office: (763) 425-1001 x 2 Cell: (612) 759-5556 -----Original Message----- From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On Behalf Of David Williams via Sprinklerforum Sent: Wednesday, February 10, 2021 9:19 AM To: sprinklerforum@lists.firesprinkler.org Cc: David Williams <david.willi...@lhbcorp.com> Subject: Tyco LFP - antifreeze Hey Scott and other cold weather practitioners in Fire Protection. Any feed back on the "new" Tyco LFP antifreeze. Looks like it may have some use in southern MN locations, but with Duluth at annual 99% extreme of -24.9 and 50 year extreme at -36.6 maybe not such a good idea yet. We plan on sticking with the dry systems we have been specifying since the flammability concerns about glycol came out unless working south of Minneapolis! As per Scott we spec nitrogen for dry systems, but it sure seems owners want to take the VE from the sprinkler contractors even when we present the long term value to them. David Toshio Williams, PE*, FPE - Lead MEP/FP Engineer (*Registered in MN, WI, MI, IA, IL, IN, ND, VT) 21 West Superior Street, Suite 500, Duluth, MN 55802 Direct 218.279.2436 | Cell 218.310.2446 LHBcorp.com LHB, Inc. | PERFORMANCE DRIVEN DESIGN. ...sent from the cloud through the tubes! _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list Sprinklerforum@lists.firesprinkler.org http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
