Pool Ops Test UPDATED ACTUAL Exam
Questions and CORRECT Answers
What is a dead spot? - CORRECT ANSWER - an area in the pool where water doesn't move
what is turnover - CORRECT ANSWER - occurs when an amount of water equal to the total
volume of the pool has moved through the recirculation system
what is the turnover period - CORRECT ANSWER - the time it takes for the total volume of
water to circulate once through the recirculation system
what is the turnover rate - CORRECT ANSWER - a measure of the amount of water moving
through the recirculation system in a 24 hour period of time
what is the optimum turnover rate in a new swimming pool? - CORRECT ANSWER - 4 hours
(6 turnovers/day)
what is the optimum turnover rate in a whirlpool less than 4000 liters - CORRECT
ANSWER - 15 minutes
what is the optimum turnover rate in a whirlpool 4000 liters or greater - CORRECT
ANSWER - 20 minutes
what is the optimum turnover rate in a water slide receiving pool - CORRECT ANSWER - 1.5
hours
what is the optimum turnover rate in a water spray park (recirculating) - CORRECT
ANSWER - 2 hours
,what is the optimum turnover rate in a wading pool (recirculating) - CORRECT ANSWER -2
hours
how to calculate the turnover rate - CORRECT ANSWER - volume of the pool x number of
turnovers required per day
calculate the volume of a rectangular pool with a constant depth - CORRECT ANSWER -
length x width x depth
calculate the volume of a rectangular pool with variable depth - CORRECT ANSWER -
length x width x (depth1+depth2)/2
calculate the volume of a circular pool with constant depth - CORRECT ANSWER - 2(radius)
x 3.14 x depth
what is the flow rate? - CORRECT ANSWER - a measure of water volume passing through
the recirculation system over a period of time
how to calculate flow rate - CORRECT ANSWER - turnover rate/24 hours per day x 60
minutes/hr
what is the purpose of skimmers? - CORRECT ANSWER - to remove water from the pool
surface for recirculation and filtration
how much of the water being recirculated should flow to remove the maximum contaminant
load? - CORRECT ANSWER - 80% of the water that is being recirculated
what is a floating weir - CORRECT ANSWER - those little doors kept in front of the
skimmers so that scum, lint, leaves and hair cannot flow back into the pool
what angles do floating weir's operate best? - CORRECT ANSWER - 45 degree angle
, `what is a strainer basket - CORRECT ANSWER - baskets in the skimmer that stop debris
from entering the recirculation line
what is an equalizer line? - CORRECT ANSWER - they protect the recirculation pump by
ensuring that the pump is always sucking water and not air
what are overflow gutters - CORRECT ANSWER - what GMU pool has and it skims a larger
surface than skimmers
what is required to have with a gutter system? - CORRECT ANSWER - a balancing or surge
tank
what does a surge tank ensure? - CORRECT ANSWER - that the pump pulls water and not
air, and stores water that is displaced by bathers entering the pool
where is the main drain located? - CORRECT ANSWER - lowest point of the pool floor
what is the purpose of the main drain? - CORRECT ANSWER - part of the recirculation
system that removes heavier debris that does not float, and can be used to drain the pool
what are 4 safety concerns with the main drain - CORRECT ANSWER - 1) grates covering
main drain need to be secure to the floor
2) suction through main drain must be at a velocity that swimmers will not be drawn down onto
the grate
3)holes in the grate must be properly sized so that fingers or toes do not get lodged between them
4)the grate should be painted a contrasting color
what are the 4 entrapment preventions for pools with submerged suction outlets - CORRECT
ANSWER - 1) a minimum of two outlets per pump with pipe centers at least 3 feet apart with
covers listed, approved, and installed in accordance with ASME and ANSI
Questions and CORRECT Answers
What is a dead spot? - CORRECT ANSWER - an area in the pool where water doesn't move
what is turnover - CORRECT ANSWER - occurs when an amount of water equal to the total
volume of the pool has moved through the recirculation system
what is the turnover period - CORRECT ANSWER - the time it takes for the total volume of
water to circulate once through the recirculation system
what is the turnover rate - CORRECT ANSWER - a measure of the amount of water moving
through the recirculation system in a 24 hour period of time
what is the optimum turnover rate in a new swimming pool? - CORRECT ANSWER - 4 hours
(6 turnovers/day)
what is the optimum turnover rate in a whirlpool less than 4000 liters - CORRECT
ANSWER - 15 minutes
what is the optimum turnover rate in a whirlpool 4000 liters or greater - CORRECT
ANSWER - 20 minutes
what is the optimum turnover rate in a water slide receiving pool - CORRECT ANSWER - 1.5
hours
what is the optimum turnover rate in a water spray park (recirculating) - CORRECT
ANSWER - 2 hours
,what is the optimum turnover rate in a wading pool (recirculating) - CORRECT ANSWER -2
hours
how to calculate the turnover rate - CORRECT ANSWER - volume of the pool x number of
turnovers required per day
calculate the volume of a rectangular pool with a constant depth - CORRECT ANSWER -
length x width x depth
calculate the volume of a rectangular pool with variable depth - CORRECT ANSWER -
length x width x (depth1+depth2)/2
calculate the volume of a circular pool with constant depth - CORRECT ANSWER - 2(radius)
x 3.14 x depth
what is the flow rate? - CORRECT ANSWER - a measure of water volume passing through
the recirculation system over a period of time
how to calculate flow rate - CORRECT ANSWER - turnover rate/24 hours per day x 60
minutes/hr
what is the purpose of skimmers? - CORRECT ANSWER - to remove water from the pool
surface for recirculation and filtration
how much of the water being recirculated should flow to remove the maximum contaminant
load? - CORRECT ANSWER - 80% of the water that is being recirculated
what is a floating weir - CORRECT ANSWER - those little doors kept in front of the
skimmers so that scum, lint, leaves and hair cannot flow back into the pool
what angles do floating weir's operate best? - CORRECT ANSWER - 45 degree angle
, `what is a strainer basket - CORRECT ANSWER - baskets in the skimmer that stop debris
from entering the recirculation line
what is an equalizer line? - CORRECT ANSWER - they protect the recirculation pump by
ensuring that the pump is always sucking water and not air
what are overflow gutters - CORRECT ANSWER - what GMU pool has and it skims a larger
surface than skimmers
what is required to have with a gutter system? - CORRECT ANSWER - a balancing or surge
tank
what does a surge tank ensure? - CORRECT ANSWER - that the pump pulls water and not
air, and stores water that is displaced by bathers entering the pool
where is the main drain located? - CORRECT ANSWER - lowest point of the pool floor
what is the purpose of the main drain? - CORRECT ANSWER - part of the recirculation
system that removes heavier debris that does not float, and can be used to drain the pool
what are 4 safety concerns with the main drain - CORRECT ANSWER - 1) grates covering
main drain need to be secure to the floor
2) suction through main drain must be at a velocity that swimmers will not be drawn down onto
the grate
3)holes in the grate must be properly sized so that fingers or toes do not get lodged between them
4)the grate should be painted a contrasting color
what are the 4 entrapment preventions for pools with submerged suction outlets - CORRECT
ANSWER - 1) a minimum of two outlets per pump with pipe centers at least 3 feet apart with
covers listed, approved, and installed in accordance with ASME and ANSI
