water Flashcards
What is a common use of raw water that usually requires only screening?
service
firewater
potable water
answer B
deluge systems provide
water for irrigation
water for firefighting
drinking water
answer B
Why is one of the firewater pumps driven by a diesel engine instead of an electric motor?
to run without power
less to maintain
cheaper than diesal
answer A
What is the function of a “jockey” pump?
Maintain pressure on the firewater system
Send large amounts of water to the deluge system to douse a fire
Refill the firewater storage pond
Pump out firewater from the process after the deluge is activated
answer A
Besides screening, what is one of the processes required to produce service water?
filtering
softening
chlorination
answer A
Clarifying and filtering comprise a primary means of treating what condition in screened water?
turbulence
turbidity
turpitude
answer B
what is turbidity ?
cloudiness caused by suspended patricles
condition that describes unhealthy bacteria
movement of water
answer A
What is the term used for the thick mixture formed in pipes and equipment by accumulation of suspended solids?
sludge
back flush
turbidity
answer A
The process of bringing together coagulated particles to form larger, heavier particles that settle to the bottom or are filtered out of the water is called ________.
filtering
decontamination
floccuation
answer C
What is Service Water used for?
eye was station
Wash downs, cooling tower makeup, flushing, cleaning
safety showers
answer B
The purpose of a potable water system is to provide:
water for consumption
water for irrigation
water for firefighting
answer A,B
What is typically the last step in producing potable water?
filtration
chlorination
disinfection
answer C
What procedure is used to remove accumulated contaminants that plug a sand filter?
raking
sifting
back flushing
answer C
Most of the cooling in a cooling tower is due to:
evaporation of water
radiant heat loss
conduction
Answer A
Drier air allows a cooling tower to achieve a lower temperature water than humid air.
True
false
answer true
What kind of problem would result from having the blowdown rate too low on a cooling tower?
high temp in basin
increased scaling/fouling
increased corrosion
answer B
What kind of problem would result from having the blowdown rate too high on a cooling tower?
excessive water usage
increased corrosion
high temp in basin
answer A
What type of problems result if the pH is too high in a cooling tower
increased corrosion
increased scaling/fouling
high temp in basin
answer B
What type of problems result if the pH is too low in a cooling tower
increased corrosion
increased scaling/fouling
high temp in basin
answer A
If a cooling tower is operating with 500 ppm hardness and the makeup water has 100 ppm hardness, how many cycles is it operating at:
divide 500/100
5
7
10
answer A
To increase the cycles from 4 to 5, the blowdown rate would need to be:
increased
decrease
answer B
Which of the following is not an impact of a chlorine leak?
release of poison gas
washing out pipes and slabs
corrosion
answer b
Which of the following tasks are associated with raw water supply systems?
Sample water for chemicals
clean and inspect screens
operate fans
answer B
A fire monitor is a piece of equipment used to detect if a fire has started.
true
false
answer False
Besides screening, what is one of the processes required to produce service water?
chlorination
filtration
de ionization
answer B
