Scott,
>From Wikipedia. Pigging can just be a single shot thing also. You just
drag the pig through a pipe not in use, then flush it.
Pigging
>From Wikipedia, the free encyclopedia
This article may require cleanup to meet Wikipedia's quality
standards. Please improve this article if you can. (Ja
Ron,
By "pig" do you mean inflatable plug like Cherne manufacturer's? If so, I
didn't know those were used for "cleaning". I guess it would work as long as
there is accountability and it gets out of the ug before the fire...
Scott Futrell
(763) 425-1001 Office
(612) 759-5556 Cell
-Orig
Getting that kind of scour is rare and very dependent on available pressure.
When is it supposed to be flushed? When it's installed, right? How does
it, us? Who witnesses the pressure test, us? What If wide open, bagged or
not, you can't achieve the 10 fps rate? I wrote #20 years ago about hav
If there may be folks trapped in a building they're spraying, they aren't
going to worry about the suction pressure so much as the life in the window.
And we sure don't want that debris to end up at the next reducing coupling
or blocking a riser nipple/drop/orifice, etc. Worst part is that the flo
We had a problem with our construction group wanting to allow a lower
flow than the 10ft/s velocity in the lines saying that it was the
maximum the system would flow, but they were only opening a single
hydrant. We insisted and finally got them to get more hose monsters and
flowed more hydrants to
Agree - if a dry sprinkler system, screwed pipe should be used.
John
John August Denhardt, P.E.
Strickland Fire Protection Incorporated
5113 Berwyn Road
College Park, Maryland 20740
Office Telephone Number: 301-474-1136
Mobile Telephone Number: 301-343-1457
FIRE SPRINKLERS SAVE LIVES
-O
I'm just having a problem reconciling that with all the verbiage and tables
dealing with the 10fps velocity.
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
I believe George got it right; because Job does not make a 155F. Can
have what is not made.
John
John August Denhardt, P.E.
Strickland Fire Protection Incorporated
5113 Berwyn Road
College Park, Maryland 20740
Office Telephone Number: 301-474-1136
Mobile Telephone Number: 301-343-1457
FIRE SP
I think what #3 is saying is that let's say you have a 6" underground, but
reduce at the riser to 3" because that is all of the system demand you have,
you can flow a 3" open outlet at the riser to flush the underground, and
that is equal to the maximum flow rate available to the system under fire
The objective is to move the water fast enough to move the crap and to
move enough water that there's enough flow to get the stuff to the
outlet so I think (dangerous) flow rate is more important. If I put my
big thumb over the end of your 24" pipe I'll get good velocity but
stuff might get hung u
If you have a pump, flows in 20 are higher.
Matt
Sent on the Sprint® Now Network from my BlackBerry®
-Original Message-
From: "craig.pr...@ch2m.com"
Date: Tue, 30 Mar 2010 16:47:12
To: sprinklerforum@firesprinkler.org
Subject: Underground flushing velocities
NFPA 24 says the following
NFPA 24 says the following:
NFPA 24: 10.10.2.1.3 The minimum rate of flow shall be not less than one of the
following:
(1) Hydraulically calculated water demand flow rate of the system, including
any hose requirements
(2) Flow necessary to provide a velocity of 10 ft/sec (3.1 m/sec) in accordanc
I have seen on Tyco's website where they have posted the listing change as a
news article or update to the listing. If you poke around there, I think it is
still up.
Matt Grisé PE*, LEED AP
Sales Engineer
Alliance Fire Protection
*Licensed in KS & MO
913.888.0647 ph
913.888.0618 f
913.927
I know that the listing had changed over time from whether CPVC can
be used exposed or not in occupied areas. Is there any place where
this history is documented?
Todd G. Williams, PE
Fire Protection Design/Consulting
Stonington, CT
860.535.2080
www.fpdc.com
Just as long as some of our older members vote "Depends"
At 10:13 AM 3/30/2010, you wrote:
>Yesterday's 45% yes to 48% no has reversed--48% yes to 45% no. Thanks.
>And remember you can vote once a day from an email address so if you
>have more than one
.. Sort of a Chicago deal.
>
>On Tue, Mar 30
To follow along with George's thought (usually a scary thing to do),
NFPA 25 says replacement sprinklers shall match the Temperature RATING.
Roland
On Mar 29, 2010, at 5:06 PM, George Church wrote:
> I'm not allowed to have an opinion on this, but if I did I'd think
> there
> wouldn't be a s
Yesterday's 45% yes to 48% no has reversed--48% yes to 45% no. Thanks.
And remember you can vote once a day from an email address so if you
have more than one….. Sort of a Chicago deal.
On Tue, Mar 30, 2010 at 5:44 AM, John Drucker wrote:
> Voted - YES
>
> John Drucker Jr CET
> Fire Protection Su
Voted - YES
John Drucker Jr CET
Fire Protection Subcode Official
Fire/Building/Electrical Inspector
Borough of Red Bank, NJ
-Original Message-
From: sprinklerforum-boun...@firesprinkler.org
[mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Steve
Leyton
Sent: Monday, March 2
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