[Sprinklerforum] Re: Water filled Sprinkler Pipe Condensate issue

Tim, Is any of the building steel sweating? If not, is this grid system circulating water colder than the interior air temperature. I just cannot fathom why you are getting a condensation issue. John R. O’Connor, SET, RME National Fire Sprinklers, Inc. 2601 Elm Hill Pike, Suite J

[Sprinklerforum] Dry system tripping due to water pressure surges

Dear Forumites, We have been installing dry pipe systems in an industrial facility in a "campus" of unheated warehouses. City water pressures range from 120 to 125 static, with 1,500 GPM flows with very high residuals. We have been experiencing high pressure surges (sometimes as much as 100 PSI

RE: Existing Dry System

You may want to run this by the AHJ. His requirements will trump the architect's. John R. O'Connor, SET, RME National Fire Sprinklers, Inc. 2601 Elm Hill Pike, Suite J Nashville TN 37214 Office 615-885-1301 Fax 615-885-7505 Cell 615-519-1118 jocon...@nfspk.com In God We Trust

RE: Distilled Spirits

Dear Forum, You might look at FMG's data sheets #7-74 and 7-29 for guidance. But when FM is not involved, there is more gray area, and not a lot of definitive direction. We have been involved with a small (but rapidly growing) distillery here in Tennessee for the past 7-8 years.

RE: ESFR and Obstructed Construction

I would surmise that the 8 foot minimum distance is to prevent 'cold soldering'. The I-beam pockets preclude this from happening, therefore this restriction is non applicable to the design problem. John R. O’Connor, SET, RME National Fire Sprinklers, Inc. 2601 Elm Hill Pike, Suite J

RE: Help Finding Code Section

Try 8.15.1 in NFPA-13, 2016 Ed. John R. O'Connor, SET, RME National Fire Sprinklers, Inc. 2601 Elm Hill Pike, Suite J Nashville TN 37214 Office 615-885-1301 Fax 615-885-7505 Cell 615-519-1118 jocon...@nfspk.com In God We Trust

Dry pendent heads

Is there a prohibition anywhere in NFPA-13 to connecting a dry pendent sprinkler directly into the bottom of a dry pipe feed-main or cross-main 4" or larger, via a standard 1" weld-o-let? Thanks to you all. John R. O'Connor, SET, RME National Fire Sprinklers, Inc. 2601 Elm Hill

RE: Converting from ESFR to CMDA - Spacing Issues

Kyle, Refer to NFPA-13, 2016 Ed, page 52, parag. 8.4.6.6. This may apply to your situation. John O'Connor National Fire Sprinklers, Inc. Nashville TN From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Kyle.Montgomery Sent: Monday, October 08, 2018 3

RE: AFSA Seeking New President and CEO

You have my vote, Steve. John O’Connor Nashville From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Steve Leyton Sent: Friday, August 03, 2018 12:01 PM To: sprinklerforum@lists.firesprinkler.org Subject: RE: AFSA Seeking New President and CEO I’ve

RE: [EXTERNAL] RE: Real system pressures versus the calculations

At zero flow take the pump boost pressure plus 20% (depending on the manufacturer-normally I use 20%) for the surge pressure at shut-off, add the city static pressure and you will have the pressure that will be exerted throughout the system, less the elevation loss, of course. This is the

RE: Apartment Crawl Space

Brian, Per 13, crawl spaces are generally not required. See NFPA-13, 2016 Ed, page 92, 8.15.6.2. As for interstitial spaces in combustible const., as often found in residential work, sprinklers will be required. You would have been in luck with 4 floors or less, but not 5. Good luck. John

RE: Fire pump removal

Dewayne, I was involved many years ago with an existing hospital, being retrofitted with new sprinklers. Existing fire pump was for standpipes, and had to be upgraded in both boost pressure and volume. Anyway, it was going to be out about three weeks while the old came out and we put in the

RE: Solenoid Valve for domestic side of 13D system riser

Have you looked into the Tyco 1” RSV. That’s what it’s designed to do. John O’Connor Nashville TN From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Owen Evans Sent: Wednesday, August 03, 2016 12:17 PM To: sprinklerforum@lists.firesprinkler.org

RE: "Self Storage" building design

OH Group II John O'Connor, National Fire Sprinklers, Inc. -Original Message- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of wmens...@comcast.net Sent: Monday, September 14, 2015 3:38 PM To: sprinklerforum Subject: "Self Storage"

RE: Floating Docks

ends for us. I believe the lengths were 6 to 8 feet each, but that may be best determined by your maximum and minimum water elevations. John O'Connor National Fire Sprinklers, Inc. -Original Message- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf

RE: Floating Docks

Pete, I failed to mention that the braided steel hose lines were 4 diameter. John -Original Message- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of John O'Connor Sent: Thursday, October 30, 2014 9:24 AM To: sprinklerforum@lists.firesprinkler.org

RE: Sidewall sprinkler EC QR listed for ordinary hazard II

Tyco makes the SW-20 and SW-24 for OH. It's Extended coverage, K=11.2 in Standard Response. You can use S/R in Ord Hazard. Why the need for QR in an OH occupancy? John O'Connor -Original Message- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf

RE: Automated Reply Re: RE: Texas code set

Anyone else getting a little bit tired of S Shannon's vacation message? John O'Connor -Original Message- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of dshan...@pscl.ie Sent: Tuesday, July 29, 2014 12:31 PM To: sprinklerforum

RE: Listed Flexible Hose?

approved its use, as there was no other alternative. Contact me at jocon...@nfspk.com John O'Connor National Fire Sprinklers, Inc. -Original Message- From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of wmens...@comcast.net Sent: Wednesday, June 04

RE: no dry type sprinkler systems allowed in light hazard applications

. John O'Connor National Fire Sprinklers Nashville -Original Message- From: sprinklerforum-boun...@lists.firesprinkler.org [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Cahill, Christopher Sent: Friday, February 21, 2014 9:23 AM To: sprinklerforum

RE: Flow Test Residual and Pitot The Same?

for the 20 PSI in this case to also be the residual, but unlikely. I'd suggest another REAL test to verify. John O'Connor National Fire Sprinklers, Nashville TN -Original Message- From: sprinklerforum-boun...@lists.firesprinkler.org [mailto:sprinklerforum-boun...@lists.firesprinkler.org

RE: Stockham Fittings

pressure for 40 years. What else will these people think up to justify their jobs? John O'Connor National Fire Sprinklers, Nashville TN -Original Message- From: sprinklerforum-boun...@lists.firesprinkler.org [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf Of Forest

RE: resurrecting an old system

Mike, I would respectfully urge flushing prior to full 200# test, simply because this system contains mud and other debris, that could, still in place, allow pinhole leaks to remain undetected. Flush to eliminate debris that could be allowing a successful pressure test. Once flushed, the system

RE: Freeze prevention

What about thermal transfer to temperature sensitive sprinkler heads? Not a very good idea, without sophisticated sensors and controls. John O'Connor -Original Message- From: sprinklerforum-boun...@lists.firesprinkler.org [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On Behalf

RE: Containing Sprinkler Runoff.

Go one step further, how about the runoff from fire department operations should a fire occur in a non-sprinklered facility? John O'Connor National Fire Sprinklers, Inc. Nashville TN -Original Message- From: sprinklerforum-boun...@lists.firesprinkler.org [mailto:sprinklerforum-boun

RE: calc procedure logic

The 7.0 PSI end head minimum pressure was never intended to kick out the links, seat etc, but to develop the minimum spray pattern required to deliver the specified density. John O'Connor National Fire Sprinklers, Inc. Nashville TN -Original Message- From: sprinklerforum-boun

RE: Exposed threads

of vibrations that a fire pump would never experience. Probably came from some design engineer in the third basement of Boeing during WWII. It is amazing how some rules get hatched and live forever, only to be expanded upon as if the original came down from Mt. Sinai. John O'Connor National Fire

2013 Ed., NFPA-13 Question

, except as allowed ion 8.4.7.2.2. Comments from the forum? John O'Connor National Fire Sprinklers, Inc. Nashville TN -- next part -- An HTML attachment was scrubbed... URL: http://fireball.firesprinkler.org/mailman/private/sprinklerforum/attachments/20130403/9c586def

RE: 2013 Ed., NFPA-13 Question

This requirement applies only to CMSA and has no impact on CMDA systems (standard spray sprinklers). Now the change to Table 23.4.4.7.1 whereby galvanized in dry systems has a C value of 100 instead of 120 will have some impact. Roland On Apr 3, 2013, at 11:53 AM, John O'Connor jocon...@nfspk.com wrote

RE: Bedbugs

with the original. Worked pretty well. John O'Connor National Fire Sprinklers, Nashville TN -Original Message- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Ford, Charles Sent: Thursday, February 28, 2013 8:17 AM To: sprinklerforum

RE: Bedbugs

been a short time delay to fuse temperature should a fire occur in the interim. John O'Connor -Original Message- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Cahill, Christopher Sent: Thursday, February 28, 2013 9:54 AM

RE: Bedbugs

. John O'Connor -Original Message- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of John Denhardt Sent: Thursday, February 28, 2013 12:19 PM To: sprinklerforum@firesprinkler.org Subject: RE: Bedbugs Absolutely John August

RE: Bedbugs

Gentlemen: It appears due to new standards, i.e. the 2013 NFPA-13 that my opinion was in error, that one based on the old standard. I will have to obtain the latest issue of NFPA-13 and follow that new criteria. I stand corrected. John O'Connor -Original Message- From: sprinklerforum

Clean Room Protection

'. The Clean Room is for auto-parts manufacturing, product being inverters for the electric auto industry. Any experience out there in similar situations? Thanks for your input. John O'Connor National Fire Sprinklers, Inc. Nashville TN -- next part -- An HTML attachment

RE: Expansion chamber for anti-freeze

of the check valve. Hence escalating pressures and no way to vent same. Pressure chamber does the trick. John O'Connor Nashville TN -Original Message- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Joel Chaim Sent: Wednesday, October

RE: How would you address this?

overseers? I think not. John O'Connor Nashville -Original Message- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Smith, Steven D. (CSFD) Sent: Friday, October 14, 2011 8:47 AM To: tm...@mfpdesign.com; sprinklerforum@firesprinkler.org

RE: Riser Location for combined stand pipe

Two separate standpipe risers often prove most cost effective. Intermediate landings for hose valves appear to be sound engineering and a good idea, but presents problems routing lines to the floor control valve locations needed at main landings. John O'Connor National Fire Sprinklers, Inc

RE: Issue with water supply company

What authority does the local water company have concerning a FP design question? They are the water purveyor, not code enforcer. John O'Connor National Fire Sprinklers Inc. Nashville TN -Original Message- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun

RE: pipe schedule and storage

. John O'Connor National Fire Sprinklers, Inc. Nashville TN -Original Message- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Todd Williams Sent: Wednesday, August 11, 2010 11:14 AM To: sprinklerforum@firesprinkler.org Subject

RE: pipe schedule and storage

And if the system is converted to dry can the existing pipe schedule afford the 30% area increase while flowing water thru two pieces of 1 at the end of all lines. I doubt it. John O'Connor -Original Message- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun

RE: Air Dryer

Look at General Air Products of Exton PA. They make a Dry Air Pac. Works well, we have installed several in critical locations where we do not want any moisture in dry or pre-action systems. None better. John O'Connor National Fire Sprinklers, Inc. Nashville TN -Original Message

RE: News Bite

...@comcast.net. He would be pleased to offer some suggestions. John O'Connor National Fire Sprinklers, Inc. Nashville TN -Original Message- From: sprinklerforum-boun...@firesprinkler.org [mailto:sprinklerforum-boun...@firesprinkler.org] On Behalf Of Gary Stites Sent: Monday, January 25, 2010 3:51 PM

Dry shadowing

Dear Forum Members, I am looking for the NFPA-13 reference that deals with dry shadowing in odd shaped rooms. It has come up a few times before in odd shaped rooms, especially since we have all begun using extended coverage heads. I have seen it before but now can't find it. Help! Thanks,

RE: water source heat pumps

Greg, One drawback that I see is future service work by another contractor, thinking that the entire floor is isolated by the FCV and having that one LIVE vertical branchline feeding all the utility closets. Could be a problem. John R. O'Connor National Fire Sprinklers, Inc. Nashville TN

RE: Window Sprinklers

Food for thought concerning the WS sprinkler application: First, we are assuming that a fire inside a room is out of control and ready to break thru a rated glass wall. Second, we are assuming that a fire in a corridor is out of control and is going to break into the room adjacent to a rated

RE: Backflow preventer installation

Pete, What water supply is the backflow preventer protecting? John R. O'Connor, SET, RME National Fire Sprinklers, Inc. Nashville TN 37214 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Larrimer, Peter A Sent: Thursday, August 28, 2008 7:51 AM

RE: Pre-Action C Value

Jimmy, Use C=100. For 99.9% of the time this system is dry, and subject to the corrosion and sediment build-up like all dry systems using black steel pipe. John John R. O'Connor, SET, RME National Fire Sprinklers, Inc. Nashville TN 37214 -Original Message- From: [EMAIL PROTECTED]

RE: Residential Sprinkler Ordinances

Forum: Two locales in Tennessee which have residential ordinances: Pleasant View TN and Ashland City TN. John O'Connor National Fire Sprinklers, Inc. Nashville TN -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ryan J. Smith Sent: Friday, August 15

RE: Residential Sprinklers and Beam Obstructions

Bob, Refer to Tyco data sheet TFP400 (for the LFII), page 4 of 8 where they discuss Beam Ceiling Design Criteria. You should be able to locate the heads in the bottom of the beams and avoid the pockets for obvious reasons. John -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL

RE: Failed Bucket Test

The weight of water in feet is .4331 per foot. 57.7 feet x .4331 = 25 PSI. I think someone has the formula backwards. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ron Greenman Sent: Tuesday, April 08, 2008 11:13 AM To: sprinklerforum@firesprinkler.org

Hose allowance on 13-R systems

Is there a requirement in 13-R for any allowance for hose? If so, how much, and where is it printed? Do requirements of NFPA-13 such as allowance for hose streams apply to 13-R and 13-D systems, when nothing to the contrary is written in the 13-R and 13-D standards? John R O'Connor, SET

Re: Hose allowance on 13-R systems

Edition) see 6.3 (1) for domestic demand. Jack W. Carlson, SET Triple A Fire Protection, Inc. [EMAIL PROTECTED] (706) 247-5050 cell -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John O'Connor Sent: Thursday, January 31, 2008 1:12 PM To: sprinklerforum

Re: Garage doors

13R allows designers to ignore OH doors in regards to positioning of sprinklers required in garages. 13D allows garage sprinklers to be omitted entirely. - Original Message - From: Russell [EMAIL PROTECTED] To: AFSA sprinklerforum@firesprinkler.org Sent: Wednesday, October 24, 2007

Viking Cold Storage Systems

Dear Forum, I am looking for feedback from sprinkler contractors who have installed the Viking Cold Storage System using K-25 ESFR heads and propylene glycol in pre-action system(s) in freezers. Please respond off-line via email or phone. Thanks! John R. O'Connor, SET National Fire