EVO 8 Water Relay Flashcards
Upon arriving to a fire the only hydrant on the block has a white disk and the truck has arrived and blocked you in. Who gives the Urgent and 10-70 over the Dept radio and The HT ?
The Officer OR ECC of the operating pumper upon finding no
viable water source transmits signal 10-70 via Department radio and HT and decides on
optimum position of the pumper
Sec 3.1
Upon transmission of the 10-70 who is designated the water resource unit ?
The next arriving pumper, designated as the Water Resource Unit, upon hearing signal
10-70 must find a viable water source.
Sec 3.2
If water relay is to be used what size hose will be used to connect hydrant to the supply pumper ?
If water relay is necessary, the 10’ or 35’ hydrant connection is connected from a hydrant
to the Supply Pumper
Sec 3.3
Where is the 3 1/2” supply stretched to on the operating pumper ?
The pump panel side.
Sec 3.4
During water relay the operating and supply pumper shall be in volume or pressure ? What is the Exception to this ?
Volume
Sec 3.3
Exception: At Standpipe operations where head pressure needs to be overcome, the
Supply Pumper remains in the Volume position and the operating pumper must be in the
Pressure position.
Sec 3.4
The ECC of the Supply Pumper opens the hydrant fully, engages the pumps, primes, and
then sets the reading on the Pro-Pressure Governor to match the idle pressure shown on
the ???? What will this reading normally be ?
Pump Pressure Gauge
Sec 3.5
100-125 psi when in the volume position
What is the pump pressure of an idle engine when in volume ? what about pressure position ?
55 psi for volume
110 psi for pressure
Sec 3.5
The Operating Pumpers ECC leaves the gated inlet ______ while______ the drain to the
gated inlet, thus allowing air in the 3½” supply line to exhaust. When good water flow is
observed flowing through the drain, close drain.
closed, opening
Sec 3.7
During water relay the pump pressure gauge on the operating engine will read approximately what ?
In most
circumstances during a relay, with both apparatus in the volume position, this number will
be around 150 – 175 psi (intake from relay approximately 100 psi plus volume psi 55).
Sec 3.9
The above relay procedure should accommodate two-2½” handlines without intake
pressure gauge dropping below 15 psi on the operating pumper. If the Intake pressure
gauge reading does drop below 15 psi on the Operating Pumper, then the ECC of the
Operating pumper should ?
request the Supply Pumper to increase throttle (tap-up propressure
governor) in 10 psi increments as needed.
Sec 3.12
During water relay If the Supply Pumper’s Intake pressure gauge drops below 15 psi, the Supply Pumper
ECC should ??
contact the **Operating Pumper ECC ** and the IC and inform
them that the hydrants supply limit has been reached
Sec 3.13
For apparatus manufactured prior to 1997 without a Pro-Pressure Governor, the Supply
Pumper should send water to the Operating pumper at what pressure ?
at idle pressure, opening the
discharge gate fully. If the Operating Pumper ECC requires more pressure from the
Supply Pumper, he/she must communicate this to the Supply Pumper ECC who will
slowly increase throttle as needed
Sec 4
Time permitting, a 2½” gate should be attached to the hydrants 2½” outlet for possible
augmentation if necessary.
True or False
True
Sec Notes 1
On Engines at what pressure does the automatic intake relief valve discharge ?
When the inlet pressure reaches 150-175 psi
Sec Notes 4
On some hydrants with high pressures (e.g., parts of Staten Island) the Intake pressure
reading on the Operating Pumper may reach or exceed 150 psi, even if the Supply
Pumper is in the Volume position. If the Operating Pumper ECC notes the intake
pressure is greater than 150 psi or the automatic intake relief valve discharges (this
should happen when the inlet pressure reaches 150-175 psi), he/she should
communicate
with the Supply Pumper ECC to insure he/she is in the Volume position.
Sec Notes 4
