I was told, though I can't really quote chapter and verse or any source, that the driver was they didn't want places burning down as a result of the FIRE SPRINKLER CONTRACTOR doing hot work. Maybe someone else has other information
Kevin Law, PE Sr. Fire Protection Engineer HVAC/Fire Protection, M&PE Bechtel National - WTP Project Ph. 509-371-3280 Cell 509-531-5715 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Doug Hicks Sent: Friday, November 12, 2010 7:59 PM To: [email protected] Subject: Re: Re: reduce then increase pipe sizes Ron, can you tell me why field welding is not allowed? Is the welder to be certified, or is the weld to be x-rayed? Douglas Hicks General Fire Equipment Co of Eastern Oregon, Inc -------------------------------------------------- From: "Ron Greenman" <[email protected]> Sent: Friday, November 12, 2010 9:56 AM To: <[email protected]> Subject: Re: Re: reduce then increase pipe sizes > Per NFPA you can't weld pipe in the field. > > On Fri, Nov 12, 2010 at 8:56 AM, [email protected] <[email protected]> > wrote: >> >> Can you have a reducing tee welded up? Or again, are the clearances >> too tight? >> >> >>>Cc : >>>Subject : RE: Re: reduce then increase pipe sizes >>> >> >That would be great is we had clear access to the pipe to do that. >> This is a 100+ year old mill (and 100+ y.o. system) and there are >> lots of other things in the vicinity of the main. We would have to go >> a lot further away to be able to do that. >> >> >> At 09:36 AM 11/11/2010, you wrote: >>> From a. Fitters asspect. I would just cut the 3" main , roll groove >>> it in place and install a 3" grooved tee then reduce the bull outlet >>> Tom berry Precision fire protection Service/inspections >>> [email protected]. Sent >> >>> >> Subject: >>> reduce then increase pipe sizes I am working on an existing system >>> where we have to tie in a new 2-1/2" main into an existing 3". Since >>> they do not make a 3x2-1/2 mechanical tee, that option is out. My >>> proposal is to utilize an existing plugged 2" outlet, install a 2 x >>> 0-6 TxG nipple and then increase to 2-1/2". It works hydraulically >>> with 18+ psi left over (reducing the 2-1/2" > >>> _______________________________________________ >> >> >> _______________________________________________ >> 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) >> > > > > -- > Ron Greenman > Instructor > Fire Protection Engineering Technology Bates Technical College > 1101 So. Yakima Ave. > Tacoma, WA 98405 > > [email protected] > > http://www.bates.ctc.edu/fireprotection/ > > 253.680.7346 > 253.576.9700 (cell) > > Member: > AFSA, SFPE, ASCET, NFPA, NFSA, AFAA, ASEE, NIBS, WSAFM, WFC > > They are happy men whose natures sort with their vocations. -Francis > Bacon, essayist, philosopher, and statesman (1561-1626) > _______________________________________________ > 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)
