American Fire Sprinkler Association
12750 Merit Drive Suite 350, Dallas, Texas 75251
Ph: (214) 349-5965 Fax: (214) 276-0908
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TECH TALK
AUGUST 2008
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LOCATION OF THE FIRE DEPARTMENT CONNECTION WITH FIRE PUMPS
The location of the fire department connection (FDC) should be located
downstream of the fire pump discharge valve and not located on the
inlet or suction side of the fire pump even though the NFPA 20
standard does not specifically indicate as such except in the annex.
The reason for this is
that a FDC on the suction side of the pump will compound the water
pressure when the fire department pumper uses the FDC. This
arrangement will be similar to two pumps located in series where the
pressures are added. An example is
the fire pump is operating at 100 psi at 1500 gpm and a fire
department pumper pressurizes the FDC at 150 psi that is located on
the suction side of the pump. Add the pressure at the FDC of 150 psi
to the fire pump pressure of 100 psi will equal a total pressure of
250 psi at the discharge side of the fire pump (not considering
friction loss). The 250 psi pressure will likely exceed the system
component pressure ratings. Thus the FDC must located after the
discharge valve on the fire pump so the fire pump and the fire
department pumper will be in parallel and the pressures will not be
compounded. There are no installation standards of the FDC in NFPA 20
since it is located outside its boundaries (i.e. located downstream of
the discharge control valve). The reference to a FDC in the 2007
edition of NFPA 20 is Figure A.5.19.1.2(b) where it shows the location
and references either NFPA 13 or NFPA 14.
NEW ISSUE OF THE CODE AUTHORITY(r) (TCA) AVAILABLE
Underwriters Laboratories Inc. released Issue 2, 2008, of The Code
Authority(r) (TCA) newsletter for regulatory authorities. This
publication is now available on UL's Web site at: http://www.ul.com/
tca/ and this edition features an article Understanding Fire Pump
Controller Applications.
FSA RESIDENTIAL FIRE SPRINKLER SYSTEM INSTALLATION GUIDE
AFSA has a new fire sprinkler fitter correspondence training program
that teaches installers the techniques for residential fire sprinkler
system installation according to the 2007 NFPA 13D, Standard for the
Installation of Sprinkler Systems in one-Two-Family Dwellings and
Manufactured Homes in as little as 6 months! For more information
call (214) 349-5965.
Member: $200 with online testing ($250 with paper testing)
Non-Member: $500 with online testing ($550 with paper testing)
Not a member? AFSA will give every new company that joins between now
and July 2009 one complimentary copy of this training guide, a ($500
value), yours free for becoming an AFSA member. So join today!
-------------------------------
Mark your calendars for the next Virtual Seminar
Multipurpose Sprinkler Systems and the Fire Sprinkler Contractor
* Rescheduled September 30, 2008
To Register: Event ID: 14088
12:00 PM EDT
11:00 AM CDT
10:00 PM MDT
9:00 AM PDT
Earn: 0.15 CEU's / 1.5 CPD's.
Member: $ 90 per connection
Non Member: $130 per connection
CEU Certificate: $ 40 per listener to receive CEU Certificate.
If any listeners at your site need CEU/CPD credit, the processing fee
is an additional $40 per person. Enter each person's full name and e-
mail address you are purchasing CEU/CPD credits for including yourself
to receive Certificate.
To Register:
Online: www.krm.com/afsa
By Phone: 800-775-7654, please have your credit card information ready.
By Fax: 800-676-0734. Fax completed form with Credit Card information.
By Mail: KRM Information Services Inc. PO Box 1187 Eau Claire, WI
54702-1187 (Payment must accompany registration)
Future AFSA Virtual Seminar
October 30, 2008
December 18, 2008
2008 AFSA DESIGN SCHOOLS
Beginning System Planning School
September. 22-October. 3, 2008
November 3-14, 2008.
Registration Prices:
Member $1100
Non-Member $1600
NOTE: Enrollment open only to AFSA Contractor Members until 6 weeks
prior to each class.
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TechTalk is prepared by the Technical Services Department of the
American Fire Sprinkler Association: Vice President of Engineering and
Technical Services, Roland Huggins, a PE registered in fire protection
engineering; Phill Brown, a CFPS and a NICET IV certified automatic
sprinkler technician, and Tom Wellen, a degreed fire protection-
engineering technologist. Opinions are provided with the
understanding that AFSA assumes no liability for the opinions or
actions taken on them and they are not to be considered the official
interpretation of the NFPA or that of its technical committees.
Copyright (c) 2008, American Fire Sprinkler Association, 12750 Merit
Drive, Ste 350, Dallas, TX 75251. Voice (214) 349-5965 ext 124 or Fax
(214) 276-0908. All rights reserved.
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