Pool Operator Exam: Pool Operator Exam Study Guide:
Questions & Answers
To be a pool operator you must - ANSWER:Complete a pool operator training course
To prevent spinal injury - ANSWER:All of the above
The strong suction in the pool (ENTRAPMENT) is the - ANSWER:Main Drain
Electrical systems in the pool must have - ANSWER:GFIs (Ground Fault Circuit Interrupters?)
The skimmer _____ prevents floating debris from re-entering the pool - ANSWER:WEIR
What is filtration? - ANSWER:Physical process of water moving through the system
What is the turnover rate in most jurisdictions? - ANSWER:6 hours
The turnover rate is? - ANSWER:Time it takes for all the water to go through the filter system
Algae forms because of ? - ANSWER:Poor circulation
To remove stains from the pool bottom and walls you need to? - ANSWER:Drain and acid wash the pool
What does adding chlorine to the pool do? - ANSWER:Raises Ph level
The formula for AREA - ANSWER:length x width
What is the surface area of a pool 50 ft wide and 100 feet long - ANSWER:5000 square feet
Formula for pool volume - ANSWER:length x width x depth x 7.48
The volume of water in a rectangular pool that is 12 feet wide, 34 feet long and constant depth of 3 feet -
ANSWER:9155 gallons
Circular pool area is? - ANSWER:r x 3.14
For a 15000 gallon pool with an an 8 hour turnover rate the _____ is 31.25 - ANSWER:Flow Rate
CDC states that the number accidents related to swimming - ANSWER:140000/year
The minimum number of ladders in a pool - ANSWER:2 ladders
Stairs in a pool must have these - ANSWER:Handrails
When a pool has a deep end of more than 5 feet, it must have these two things: - ANSWER:safety line
and a slope line mark
Pools should have both horizontal and vertical depth markers no more than - ANSWER:25 feet apart
The algae that causes the most damage to a pool is - ANSWER:Black Algae
Low chlorine levels will cause ___ in the pool - ANSWER:Green Algae
The person responsible for keeping records at the pool is - ANSWER:pool operator
, If the pool is cloudy and you cannot see the main drain, what do you do? - ANSWER:Close the pool to
swimmers
PH should be between ___ and ___ - ANSWER:7.2 and 7.8
To raise pH you add... - ANSWER:Soda Ash
To lower pH you add - ANSWER:Muriatic acid
Chlorine levels should be between ____ and ____ - ANSWER:1.0 and 5.0
Liquid chlorine is named - ANSWER:Sodium Hypochlorite
Powder chlorine is named - ANSWER:Calcium Hypochlorite
Chlorine comes in these forms - ANSWER:Liquid, gas, and powder
Chlorine is added to the pool to - ANSWER:Oxidize organic matter
When you add chlorine to the water it forms - ANSWER:Hydrochlorous acid
Total Alkalinity of a pool should be between ? - ANSWER:80 and 120 ppm
Low alkalinity results in ? - ANSWER:Loss of pH control (pH bounce)
To raise total alkalinity you should add - ANSWER:Sodium Bicarbonate
Calcium hardness of a pool should be between - ANSWER:200 and 400
Low calcium hardness causes - ANSWER:Scaling
Cyanuric acid can not exceed - ANSWER:100 ppm
Metals that damage the surface of a pool are - ANSWER:Iron, Manganese and Copper
The filter medium that can filter the smallest particles is - ANSWER:Diatomaceous Earth
______ means that over the course of time the sand in the filter becomes bad - ANSWER:Channeling
As the dirt in the filter accumulates the flow of the water going to the pool... - ANSWER:Decreases
In order to remove dirt/particles form the filters you have to - ANSWER:Backwash
High rate sand filters are able to filter - ANSWER:15-20 square foot of water per minute
The flow of water through the filter is measured in - ANSWER:gallons per minute GPM
Chloramines are what combined? - ANSWER:Chlorine and Ammonia
To have breakpoint level of chlorine at a pool you must have what? - ANSWER:10 times the level of
Chloramines
If a patron smells chloramines (bad chlorine) you must do what? - ANSWER:Shock the pool - raising the
chlorine level to 10
Shocking the pool is also called what - ANSWER:Breakpoint Chlorination of the pool water
Questions & Answers
To be a pool operator you must - ANSWER:Complete a pool operator training course
To prevent spinal injury - ANSWER:All of the above
The strong suction in the pool (ENTRAPMENT) is the - ANSWER:Main Drain
Electrical systems in the pool must have - ANSWER:GFIs (Ground Fault Circuit Interrupters?)
The skimmer _____ prevents floating debris from re-entering the pool - ANSWER:WEIR
What is filtration? - ANSWER:Physical process of water moving through the system
What is the turnover rate in most jurisdictions? - ANSWER:6 hours
The turnover rate is? - ANSWER:Time it takes for all the water to go through the filter system
Algae forms because of ? - ANSWER:Poor circulation
To remove stains from the pool bottom and walls you need to? - ANSWER:Drain and acid wash the pool
What does adding chlorine to the pool do? - ANSWER:Raises Ph level
The formula for AREA - ANSWER:length x width
What is the surface area of a pool 50 ft wide and 100 feet long - ANSWER:5000 square feet
Formula for pool volume - ANSWER:length x width x depth x 7.48
The volume of water in a rectangular pool that is 12 feet wide, 34 feet long and constant depth of 3 feet -
ANSWER:9155 gallons
Circular pool area is? - ANSWER:r x 3.14
For a 15000 gallon pool with an an 8 hour turnover rate the _____ is 31.25 - ANSWER:Flow Rate
CDC states that the number accidents related to swimming - ANSWER:140000/year
The minimum number of ladders in a pool - ANSWER:2 ladders
Stairs in a pool must have these - ANSWER:Handrails
When a pool has a deep end of more than 5 feet, it must have these two things: - ANSWER:safety line
and a slope line mark
Pools should have both horizontal and vertical depth markers no more than - ANSWER:25 feet apart
The algae that causes the most damage to a pool is - ANSWER:Black Algae
Low chlorine levels will cause ___ in the pool - ANSWER:Green Algae
The person responsible for keeping records at the pool is - ANSWER:pool operator
, If the pool is cloudy and you cannot see the main drain, what do you do? - ANSWER:Close the pool to
swimmers
PH should be between ___ and ___ - ANSWER:7.2 and 7.8
To raise pH you add... - ANSWER:Soda Ash
To lower pH you add - ANSWER:Muriatic acid
Chlorine levels should be between ____ and ____ - ANSWER:1.0 and 5.0
Liquid chlorine is named - ANSWER:Sodium Hypochlorite
Powder chlorine is named - ANSWER:Calcium Hypochlorite
Chlorine comes in these forms - ANSWER:Liquid, gas, and powder
Chlorine is added to the pool to - ANSWER:Oxidize organic matter
When you add chlorine to the water it forms - ANSWER:Hydrochlorous acid
Total Alkalinity of a pool should be between ? - ANSWER:80 and 120 ppm
Low alkalinity results in ? - ANSWER:Loss of pH control (pH bounce)
To raise total alkalinity you should add - ANSWER:Sodium Bicarbonate
Calcium hardness of a pool should be between - ANSWER:200 and 400
Low calcium hardness causes - ANSWER:Scaling
Cyanuric acid can not exceed - ANSWER:100 ppm
Metals that damage the surface of a pool are - ANSWER:Iron, Manganese and Copper
The filter medium that can filter the smallest particles is - ANSWER:Diatomaceous Earth
______ means that over the course of time the sand in the filter becomes bad - ANSWER:Channeling
As the dirt in the filter accumulates the flow of the water going to the pool... - ANSWER:Decreases
In order to remove dirt/particles form the filters you have to - ANSWER:Backwash
High rate sand filters are able to filter - ANSWER:15-20 square foot of water per minute
The flow of water through the filter is measured in - ANSWER:gallons per minute GPM
Chloramines are what combined? - ANSWER:Chlorine and Ammonia
To have breakpoint level of chlorine at a pool you must have what? - ANSWER:10 times the level of
Chloramines
If a patron smells chloramines (bad chlorine) you must do what? - ANSWER:Shock the pool - raising the
chlorine level to 10
Shocking the pool is also called what - ANSWER:Breakpoint Chlorination of the pool water
