HomeMy WebLinkAbout313.009 - Supplying 2 ½-Inch Handlines
TRAINING AND EQUIPMENT MANUAL
DRIVER / OPERATOR SKILLS
313.009 SUPPLYING 2-1/2-INCH HANDLINES
EFFECTIVE: MARCH 2016
Current Revision Date: 09/21/21 Next Revision Date: 09/21/23
Author’s Name/Rank: Robert J. Garcia, Engineer Review Level: 2
Administrative Support: Tammy Williams
Management Analyst II
ADA
PURPOSE
To define standard operations for supplying water to 2-1/2” handlines.
APPLICATION
The 2-1/2-inch handlines are generally the largest handlines used by the Fresno Fire
Department (FFD or Department) and, under ideal situations, require three (3)
firefighters to advance and operate efficiently. The 2-1/2-inch handlines are best
suited for fires involving large, heavily loaded structures, such as warehouses,
supermarkets, shopping centers, lumber yards, or any other location where a large
amount of water is needed.
OPERATIONAL POLICY
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OPERATIONAL GUIDELINE
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PROCESS
1. Spot apparatus and prepare for standard pump operations.
2. Secure a water supply.
a. Prior to an exterior supply, extreme caution must be observed over
the total GPM flowing. Tank water supply may last only 3 minutes
when flowing a 2-1/2” handline.
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b. A 2-1/2” hose line should not be put into service for interior attack
without an exterior supply already established or one that is
imminent.
Note: It is your job to keep your company officer or the IC aware
of the supply limitations before firefighters are at risk of
losing viable hose pressures!
3. Confirm the 2-1/2” hose has been deployed and is clear of the hose bed.
Ensure ample hose has been flaked out for advancement.
4. Connect hose to desired 2-1/2” discharge and open the relative
discharge valve.
5. Remove significant kinks.
6. Check for visual or audible call for water from the firefighter at the nozzle.
7. Confirm by calling out “water coming”.
8. Locate appropriate discharge valve handle/controller and associated
discharge gauge.
9. Charge hose line at a controlled rate.
a. Open discharge prior to throttling up when possible.
b. Open only partially, allowing for a very predictable reaction for the
firefighter(s). Watch the water travel through the hose until it
reaches the firefighter(s) and confirm they have control.
10.Set appropriate discharge pressure.
a. Always refer to the specific hose line discharge gauge for
discharge pressures relative to that hose line. The Main Pump
Discharge Pressure gauge is not to be used to determine
individual hose line pressures.
b. As necessary, prior to consulting the POG, pumping an initial
pressure of 100 psi is generally a safe practice when pumping to
typical lays of 2-1/2’ attack line. An exception to this may be when
pumping to a short lay and a solid stream nozzle, where slightly
lower pressures may be appropriate.
c. As time allows, adjust pressure after consulting the POG.
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d. When a visual count of hose sections being used is not possible
(for friction loss calculations), cross reference the hose number
on the section connected at the discharge with the hose inventory
to calculate.
11.Properly Set Pump Boss/Pressure Control Valve.
a. Never allow discharge pressure to exceed target pressure PDP
by more than 30 psi for firefighter safety.
b. If apparatus is equipped with a Pump Boss, ensure/place in Pressure
mode under normal operating circumstances.
c. In Pressure mode the Pump Boss will maintain a constant discharge
pressure and adjust the engine rpm automatically to compensate for
variations in pressure.
d. In RPM mode the Pump Boss maintains a constant engine rpm and
needs the throttle adjusted to compensate for pressure variations.
12.If apparatus is equipped with a Relief Valve properly set:
a. Slowly turn the hand wheel counterclockwise until the relief valve opens
and the amber pilot light is lit.
b. Turn the wheel clockwise slightly until the light is out. The relief valve
now operates at a set pressure and is set slightly higher than the
discharge pressure.
13.Never allow discharge pressures to fall below or exceed target PDP by
more than 30 psi.
a. This causes an unsafe situation for firefighters on the hose lines
if over pressurization is supplied or under pressurization is
supplied.
b. Over pressurization can cause extreme nozzle reaction and the
hose line could possibly be too difficult to handle.
c. Under pressurization can cause a reduced amount of pressure
and gallons per minute to the nozzle, creating a possible unsafe
condition for firefighters depending on fire flow needs.
14.Check undercarriage for leaks.
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a. Water
Close open bleeder/drains.
b. Fluid
Oil, radiator, etc.
15.Assess water supply/update command, as needed.
16.Observe the following:
a. Water Tank Level
b. Engine Temperature
c. Oil Pressure
17.Note abnormal noises or concerns.
a. Motor noises, pump noises, etc.
18.Additional notes:
a. Safety Concerns
b. Need for further training/improvement in specific areas of IPE.
c. Any additional notes the evaluator offers.
INFORMATION
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DEFINITIONS
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CROSS REFERENCES
Training and Equipment Manual
Section 301.004, Supply Lines / Water Supply
Section 303.005, Pump Operator’s Guide
Section 313.005, Standard Pump Operation
Section 313.007, Change-Over from Tank to Hydrant
Section 313.008, Tank Supply from Another Engine
IFSTA Pumping and Aerial Apparatus Driver/Operator Handbook, 3rd Edition
Section 313.009
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