Week 1 Flashcards
(24 cards)
What are the 2 functions of the engine?
Transport members
Deliver water to fire area
What is a conventional engine equipped with?
2 stage centrifugal pump
2,000 GPM
600 Max PSI
What are 2 stage 2,000 GPM pumps designated as? What are they equipped with?
High pressure engines
1 high-pressure equipped with a high pressure elbow
What are 3rd stage engines and what is their max rated psi?
700 psi with 2 special high pressure discharge elbows.
What apparatus does squad companies have?
2 stage centrifugal with a total rated capacity of 1000 Gpm and rating of 600 psi
What is the default operation setting for FDNY engine apparatus?
Volume
When should the engine NOT be maintained in volume operation?
When need to overcome head pressure such as supplying a standpipe
When in Volume, how do the pumps operate?
Parallel
When in pressure how do pumps operate?
In series
Which operation enables the pump to reach highest rated discharge?
Pressure Operation, but only half of maximum flow
When should pressure operation only be used?
When necessary to overcome head pressure such as supplying a fire department connection
What is head pressure?
The pressure when water is not flowing
Prior to using the transfer valve, what should the engine RPM be returned to?
idle pressure
How many gallons are a booster tank?
500 gallons
How do you supply water to an apparatus?
Inlets “suctions”
What are the 3 sizes of inlets?
3”
4 1/2”
6”
What types of gates are there?
Gated or Non Gated
True/False - gated inlets are to always remain in closed position
False-open
How is water discharged from apparatus?
Outlets (discharges)
What are sizes of outlets?
2 1/2”
3”
4 1/2”
Reducers are placed on 2 1/2” outlets for stretching a 1 3/4” hose
True or false: all outlets are gated?
True
How are outlets operated?
Partially open position to regulate pressure
What is idle
Pressure of a volume operation
55 PSI
What is idle pressure of a pressure operation?
110
