MEP Fire Fighting

Fire Pump Design Intent - 2006 Codes – NFPA 20, IBC, and IFC
FIRE PUMP DESIGN INTENT
2003 NFPA 20, 2002 NFPA 13, and 2006 IBC
To Accompany Architectural Review
Listed items require revision or clarification by contractual documentation (i.e., revised
drawings, specifications, addenda, etc.) before plans can be approved. Answers in letter form
are not acceptable. Design intent must be submitted by a fire protection sprinkler system
engineer or architect. Starting construction before plan approval may be considered as
just cause by the state to issue a stop work order. [Rule 0780-02-03-.02]
Architectural
1. The fire pump room must be separated from all other spaces of the building by 2-hour fire
rated construction. The rating may be reduced to 1-hour if the building is fully sprinklered
with a NFPA 13 system. [NFPA 20 5.12.1.1]
2. Provide heat (NFPA 20 5.12.2), lighting (NFPA 20 5.12.3), emergency lighting (NFPA 20
5.12.4), ventilation (NFPA 20 5.12.5), and a floor drain in the pump room (NFPA 20
5.12.6).
Mechanical
1. Provide a plan and a cross section of the fire pump room. Identify any equipment that is
not fire pump related (plumbing, mechanical, electrical, etc.). [2006 IFC Section 913 and
NFPA 20 5.2.3]
2. Identify the fire pump manufacturer and model with pump and driver ratings. Identify the
manufacturer of the controller and transfer switches (if applicable). [NFPA 20 5.7]
3. All controllers and transfer switches shall be specifically listed for electric-motor driven fire
pump service. [NFPA 20 10.1.2.1]
4. Provide a fire pump system schematic showing all system components including valves,
tamper switches, check valves, controllers, pumps, bypass, test header, suction and
discharge line. If the system supplies standpipes and sprinklers, show all main system
components on the schematic.
5. Provide a graph sheet showing the following information.
A. Water supply combined curve (i.e., separate fire pump curve, public water supply
curve, and a third curve showing the combined pump and public water supply
effect). [NFPA 13 Chapter 14, A.14.3.2, and Figures A.14.3.2(a) thru (d)]
B. Verify that pump operation does not reduce suction pressure head below allowable
per NFPA 20 5.14.3. Include pressure losses from the backflow preventer and
meter if needed.
C. Verify that the water supply is capable of delivering 150 percent of the pump’s rated
capacity. [NFPA 20 5.6.5]
6. Show the fire department connection. It must be on the discharge side of the fire pump.
[NFPA 13 6.8]
7. Provide a pump bypass and a means to test the pump. [NFPA 20 5.14.4 and 5.19.1]
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Fire Pump Design Intent - 2006 Codes – NFPA 20, IBC, and IFC
8. Provide a pressure relief valve. [NFPA 20 5.18]
9. Provide a jockey pump. [NFPA 20 5.24] Show check and control valves at the discharge
piping, and a control valve at the suction piping. [NFPA 20 Figure A.5.24.4]
10. Each jockey and fire pump controller must have separate sensing lines and be located
between the discharge check and control valves. [NFPA 20 10.5.2.1 and Figure
A.10.5.2.1(a) & (b)] Show this on the plans and diagram/section.
11. For fire pumps in high-rise buildings where electric motors are used and the height of the
structure is beyond the pumping capability of fire department apparatus, a reliable
emergency source of power shall be provided. [NFPA 20 9.2.1.2] For reliable sources,
see NFPA 20 9.2.4.
12. Provide earthquake protection based on seismic design requirements. [NFPA 20 5.27]
13. Check valves and backflow prevention devices must be listed for fire protection service
and when located upstream of the pump shall be located a minimum of ten pipe diameters
from the pump suction flange. [NFPA 20 5.26.1, 5.26.3, and 5.14.3]
Electrical
1. Power for electric motor driven fire pumps must be from a reliable source or two or more
independent sources. [NFPA 20 9.2.1.1]
2. Where multiple electric power sources are provided, they shall be arranged so that a fire
at one source will not cause an interruption at the other source. [NFPA 20 9.2.5.1]
3. Where power is supplied by a service, it must be arranged to minimize the possibility of
damage by fire. [NFPA 20 9.2.2 and .3] Service-entrance conductors or fire pump feeder
conductors must be physically routed outside the building and must be installed as
service-entrance conductors in compliance with 2005 NFPA 70, Article 230. When routed
through or under the building, it must be encased in concrete at least 2” thick. [NFPA 20
9.1.3 and 2005 NFPA 70, Article 695.6(A), 230.6(1), or (2)]
4. The power supply feeding the fire pump and accessories must be dedicated, and
directly connected with no disconnect device to the power source. [NFPA 20 9.2, 9.3, and
A.9.3.2] Except that a single disconnecting means and associated over-current protective
device is permitted between a power source remote from the fire pump room and
controller or transfer switch or listed combination of both. [NFPA 20 9.3.2.2.3.1] This
disconnect must be supervised. [NFPA 20 9.3.2.2.3.2(E)]
5. Where alternate power is supplied by an on-site generator, the generator must be
located and protected in accordance with 9.2.2 and Section 9.6. [NFPA 20 9.2.5.2]
6. All controllers must be located close to the motor with access for servicing. [NFPA 20
10.2.1]
7. Transfer of power to the fire pump controller between the normal supply and the alternate
supply must take place within the fire pump room. [NFPA 20 9.6.4]
8. Manual transfer switches may not be used to transfer power to the fire pump controller.
[NFPA 20 10.8.1.2]
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Fire Pump Design Intent - 2006 Codes – NFPA 20, IBC, and IFC
9. A fire pump controller may not be used as a junction box to supply other equipment
(jockey or make-up controllers). [NFPA 20 10.3.4.6]
10. No remote device may be installed that will prevent automatic operation of the transfer
switch. [NFPA 20 10.8.1.3]
11. All pump room wiring must be in rigid, intermediate, or liquid tight flexible metal conduit,
LFNC-B, listed Type MC cable, Type MI cable, or other approved means. [NFPA 20 9.1.3
and 2005 NFPA 70, Article 695.6(E)]
12. If the pump is not constantly attended, the controller must have connections to provide an
audible or visual alarm in a constantly attended location for the following conditions.
[NFPA 20 10.4.7]
A. Controller has operated into a motor running condition.
B. Loss of power to one of the phases on the line side of the motor contactor.
C. Phase reversal on the line side of the motor contactor.
D. Controller connected to alternate source where two sources of power are supplied.

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