Typically black carbon steel is used for the foam-water systems but galv. can be used. Most foam mfgr. data will state not to used galvanized piping only where it would be in direct contact with the undiluted foam concentrate.
CLDI is typical for UG, have never heard of anyone trying to use it above ground. Better check it's listing before proceeding down that road. As far as life span, might try calling various pipe mfgrs. and see if they have any data concerning life cycle based on various installation conditions. Craig L. Prahl, CET Fire Protection Group 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.lg.com -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Benjamin Schrader Sent: Thursday, November 29, 2007 4:44 PM To: [email protected] Subject: RE: A Pipe's Life Thanks for the info, Ron. Did you mean that the presence of AFFF causes the breakdown of steel pipe? Benjamin -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ron Greenman Sent: Wednesday, November 28, 2007 5:35 PM To: [email protected] Subject: Re: A Pipe's Life Benjamin, First and foremost you cannot use galvanized with AFFF. Black steel tends to swell, stratify and then de-laminate (there are some proper and precise words to describe this but they're escaping me at the moment). Stainless works well on ships. I don't have a clue about C.L. ductile but sounds like it might work. On Nov 28, 2007 2:13 PM, Benjamin Schrader <[EMAIL PROTECTED]> wrote: > An existing AFFF foam system, supplied by sea water, needs the pumps > replaced. The pipe supplying the pumps, and from the pumps to the > deluge valves, in diameters from 8" to 4", totals less than 200' in length. > > > > Our client is looking to us for guidance on what kind of pipe should > be used > to replace the old pipe. The old pipe is black steel. How do you determine > the cost effectiveness of new steel pipe vs. ductile cement lined vs. > galvanized vs. stainless steel? How do you estimate life of pipe? > From your experience, what other concerns should be considered for > this decision? > > > > Thanks for the help. > > > > Benjamin Schrader > > Maine Fire Protection Systems > > 6 Dowd Rd > > Bangor, ME 04401 > > phone (207) 942-8809 > > fax (207) 941-1910 > > email [EMAIL PROTECTED] > > > > > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email > to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > -- Ron Greenman at home.... _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
