If it is military the concentrate lines are often (maybe always) required to be stainless steel. At least ETL 02-15 and 01-1-1 have that requirement.
Reed A. Roisum, CET Engineering Technician Direct: (701)280-8580 Cell: (701)212-8810 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Wednesday, April 14, 2010 2:42 PM To: [email protected] Subject: RE: Foam system piping The foam concentrate lines are typically dictated by the mfgr. Only mention of specifics is that the foam concentrate piping NOT be galvanized. Some of the concentrates can have a somewhat corrosive nature to them. Consult the manufacturer of the foam you intend to use. Foam concentrate ratio (3% or 6% are typical) are dependant on the hazard being protected. Again it's best to consult with the mfgr. Also they can tell you the specific design density to use and whether you need air aspirating type sprinklers or standard heads will be suitable. Once you give them the MSDS on the chemical to be protected they will also tell you whether you need Alcohol Resistant or standard AFFF. 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 [email protected] http://www.ch2m.com -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Russell Sent: Wednesday, April 14, 2010 2:31 PM To: AFSA Subject: Foam system piping The last time I designed a foam system was over 20 years ago and I don't recall very much of the specifics. I used stainless steel pipe to carry the foam concentrate to the porportioner. I do know that it needs to be corrosion resistant. What I don't remember is why stainless. Was it required by the foam manufacturer, the project specifications or a fire code? Can someone help me out here? One more thing I don't remember is what type foam concentrate it was. Not much info, huh. Russell Rewis Brown Automatic Sprinklers, Inc. 107C Hemlock Street Valdosta, Georgia 31601 229-244-8130 [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) _______________________________________________ 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)
