PUMP OPS QUESTIONS AND
CORRECT ANSWERS
how do you transition from the on board tank to a supplied source? ANSW✅✅changing smoothly
without interrupting the fire attack
when lines are not always in use, how do you keep the pump from overheating? ANSW✅✅open
pump bypass valve
circulate water
use coolers
keep water flowing in lines
how is lift measured during drafting? ANSW✅✅from surface of water to the pump intake
what is done to increase efficiency of water shuttle operations ANSW✅✅increase size of dump
tank
what is it called when water comes to a sudden stop? ANSW✅✅water Hammer
what does a reading of -75kpa on the compound gauge tell you during drafting operations?
ANSW✅✅max vacuum capability is achieved
what is the purpose of the fire attack pumper in relay pumping? ANSW✅✅determines the
required amount of water flow
acts as a booster line
what pump initiates shut down procedures during relay pumping? ANSW✅✅attack pump- pump
closest to the fire
which pumper shuts down last during relay ANSW✅✅supply pumper- closest to hydrant/water
source
, when pump intake pressure drops below 140kpa, what has happened ANSW✅✅danger of
cavitation
what is created to draw foam through an inductor? ANSW✅✅venturi
what must be considered when selection a foam proportioner? ANSW✅✅foam solutions flow
requirements and discharge pressure
one hydraulic length is ANSW✅✅100ft
no more then __ sections of hose after foam connection ANSW✅✅3
one section = ANSW✅✅15m
if the nozzle person indicates there is not enough foam, how is this corrected? ANSW✅✅decrease
pressure to the line
increase foam concentrate
using an in-line educator the foam is poor quality, why is this? ANSW✅✅flow through educator
exceeds its rated capacity
what is the friction loss on a stand pipe system? ANSW✅✅175kpa.....
what is the friction loss added to the pump discharge for each floor above stand pipe?
ANSW✅✅35kpa
what is the lay called from the fire to the hydrant ANSW✅✅reverse
what is the lay called from the hydrant to the fire ANSW✅✅forward
CORRECT ANSWERS
how do you transition from the on board tank to a supplied source? ANSW✅✅changing smoothly
without interrupting the fire attack
when lines are not always in use, how do you keep the pump from overheating? ANSW✅✅open
pump bypass valve
circulate water
use coolers
keep water flowing in lines
how is lift measured during drafting? ANSW✅✅from surface of water to the pump intake
what is done to increase efficiency of water shuttle operations ANSW✅✅increase size of dump
tank
what is it called when water comes to a sudden stop? ANSW✅✅water Hammer
what does a reading of -75kpa on the compound gauge tell you during drafting operations?
ANSW✅✅max vacuum capability is achieved
what is the purpose of the fire attack pumper in relay pumping? ANSW✅✅determines the
required amount of water flow
acts as a booster line
what pump initiates shut down procedures during relay pumping? ANSW✅✅attack pump- pump
closest to the fire
which pumper shuts down last during relay ANSW✅✅supply pumper- closest to hydrant/water
source
, when pump intake pressure drops below 140kpa, what has happened ANSW✅✅danger of
cavitation
what is created to draw foam through an inductor? ANSW✅✅venturi
what must be considered when selection a foam proportioner? ANSW✅✅foam solutions flow
requirements and discharge pressure
one hydraulic length is ANSW✅✅100ft
no more then __ sections of hose after foam connection ANSW✅✅3
one section = ANSW✅✅15m
if the nozzle person indicates there is not enough foam, how is this corrected? ANSW✅✅decrease
pressure to the line
increase foam concentrate
using an in-line educator the foam is poor quality, why is this? ANSW✅✅flow through educator
exceeds its rated capacity
what is the friction loss on a stand pipe system? ANSW✅✅175kpa.....
what is the friction loss added to the pump discharge for each floor above stand pipe?
ANSW✅✅35kpa
what is the lay called from the fire to the hydrant ANSW✅✅reverse
what is the lay called from the hydrant to the fire ANSW✅✅forward
