There are great benefits to replacing 3/4" end of branch line piping with 1" piping, especially since there are reasons the standard doesn't allow 3/4" steel pipe any longer.
It's easily plugged with minimal amounts of debris and easily ecluded over time. I agree with you Rick, its a good idea and a prudent practice to replace older technology with newer. We know what we know when we know it and if you can convince a client to help himself make a good decision based on sound advise, the goals of fire and life safety are being met. NFPA 25 is still a relatively new document and it's predecessors (NFPA 13A and 14A) didn't prescribe anything - and as such were not adoptable as codes. The pre-cursor to NFPA 25 requirements as they relate to internal condition inspections and flushing were found in a small green covered pamplet printed by the Insurance industry. I have a copy somewhere but don't recall the name of it exactly. Anyway, the ISO offices used to send notices out to building owners with dry systems 50 + years old, requiring the internal condition inspection. That document and ISO did require the 3/4" ends of branch line to be upgraded to 1". bc ---- Rick Green <[EMAIL PROTECTED]> wrote: > Reduce the possibility of future sprinkler pipe obstructions. Increased > corrosion growth evident in dry pipe sprinkler systems, especially with > smaller diameter pipe. > > Rick E. Green, District Manager > East Coast Fire Protection, Inc. > 1113 Cavalier Boulevard > Chesapeake, Virginia 23323 > 757/485-7486(p), 757/485-8730(fax), 757/328-0131(cell) > [EMAIL PROTECTED] > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bob Knight > Sent: Thursday, October 18, 2007 5:01 PM > To: [email protected] > Subject: RE: 3/4" Steel Pipe on Dry Pipe System > > Rick, > There are no NFPA 13 criteria for changing 3/4" pipe in the manner that you > have described. What would the benefit be to your customer to change the > 3/4" to 1"? > > Bob Knight > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Rick Green > Sent: Thursday, October 18, 2007 2:47 PM > To: [email protected] > Subject: 3/4" Steel Pipe on Dry Pipe System > > > East Coast recently completed inspection of a dry pipe sprinkler system. > During trip test unable to trip the dry pipe system because of foreign > material causing pipe blockage. Initially pipe blockage was notice in the > inspectors test pipe. After a thorough inspection, majority of the pipe > including mains, branch lines showed signs of foreign material in the pipe. > > We have proposed to owner to flush sprinkler system and also replace ¾" > branch line pipe. > > Is their a standard reference that requires removal of 3/4" sprinkler pipe > with larger diameter pipe (1") when the sprinkler pipe is flushed? > > > Rick E. Green, District Manager > East Coast Fire Protection, Inc. > 1113 Cavalier Boulevard > Chesapeake, Virginia 23323 > 757/485-7486(p), 757/485-8730(fax), 757/328-0131(cell) > [EMAIL PROTECTED]<mailto:[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) > > No virus found in this incoming message. > Checked by AVG Free Edition. > Version: 7.5.488 / Virus Database: 269.15.0/1077 - Release Date: 10/18/2007 > 9:54 AM > > > No virus found in this outgoing message. > Checked by AVG Free Edition. > Version: 7.5.488 / Virus Database: 269.15.0/1077 - Release Date: 10/18/2007 > 9:54 AM > > > _______________________________________________ > 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)
