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" > _______________________________________________
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--
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)
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