POOL OP STUDY GUIDE EXAM 2024
QUESTIONS WITH COMPLETE
ANSWERS
The CDC estimates that approximately ________ water related injuries occur annually -
Answer-140,000
No diving in water underneath ____ ft to prevent spinal injuries. Diving should only be
done from ______ or ______. - Answer-6 feet; diving boards or stands
What is the pool op responsible for maintaining during the day? - Answer-The daily pool
operation log
What is the strongest point of suction in a pool? What could it cause? - Answer-main
drain; entrapment and drowning
Built-in stairs are commonly used in the shallow end of pools and must have a _______
handrail - Answer-secure
How many ladders or stairways should be provided in a pool for adequate access and
egress for swimmers? - Answer-At least 2 ladders or stairways
What is the physical process of removing suspended particles from the pool water? -
Answer-Filtration
What happens to the the amount of water that can pass through the filter as dirt
accumulates inside it? - Answer-The amount of water that can go through it decreases
What is a damaging condition that occurs over time in a sand filter? - Answer-
Channeling
What is the process of removing accumulated particles from inside a sand filter? -
Answer-Backwashing
What is the rate water passes through a high rate sand filter normally? - Answer-15-25
gallons per minute per square foot
What is the volume of water going through a filter system measured in? - Answer-
gallons per minute
What is the turnover rate for a swimming pool? - Answer-Every 6 hours
, What is the equation for surface area of a rectangular or square pool? - Answer-length x
width = surface area
What is the equation for surface area of a circular pool? - Answer-71 x r2 = surface area
What is the equation for the volume of a swimming pool? - Answer-length x width x
depth x 7.48 = volume
What is the amount of time it takes for the total volume of pool water to pass through the
circulation system? - Answer-turnover rate
What is the equation for minimum required flow rate? - Answer-(volume of pool/turnover
rate)/60 = flow rate
What primarily forms in a swimming pool because of poor pool water circulation? -
Answer-Algae
What can penetrate into the plaster of the pool surface and cause damage and is the
most difficult type of algae to control? - Answer-Black algae
What must be done in order to remove stains from the interior pool surface? - Answer-
The pool must be drained and acid washed
What requires special handling and is heavier than air and must be stored in rooms that
are well ventilated? - Answer-Chlorine gas
What is the recommended level of free chlorine in a swimming pool? - Answer-1 to 10
parts per million (ppm)
What can be done with chlorine to remove a chlorine odor emanating from a pool? What
is the odor usually caused by? - Answer-shocking the pool with chlorine; chloramines
What can be added to the water and will sanitize the water and prevent the growth of
algae? - Answer-chlorine
What can be added to the pool water to raise the chlorine? - Answer-Adding liquid or
dry chlorine
When should the pool operator close the pool to swimming? - Answer-if he ever finds
the water has become cloudy and he cannot see the main drain
What not only kills germs, but will oxidize organic matter in pool water? - Answer-
Chlorine
QUESTIONS WITH COMPLETE
ANSWERS
The CDC estimates that approximately ________ water related injuries occur annually -
Answer-140,000
No diving in water underneath ____ ft to prevent spinal injuries. Diving should only be
done from ______ or ______. - Answer-6 feet; diving boards or stands
What is the pool op responsible for maintaining during the day? - Answer-The daily pool
operation log
What is the strongest point of suction in a pool? What could it cause? - Answer-main
drain; entrapment and drowning
Built-in stairs are commonly used in the shallow end of pools and must have a _______
handrail - Answer-secure
How many ladders or stairways should be provided in a pool for adequate access and
egress for swimmers? - Answer-At least 2 ladders or stairways
What is the physical process of removing suspended particles from the pool water? -
Answer-Filtration
What happens to the the amount of water that can pass through the filter as dirt
accumulates inside it? - Answer-The amount of water that can go through it decreases
What is a damaging condition that occurs over time in a sand filter? - Answer-
Channeling
What is the process of removing accumulated particles from inside a sand filter? -
Answer-Backwashing
What is the rate water passes through a high rate sand filter normally? - Answer-15-25
gallons per minute per square foot
What is the volume of water going through a filter system measured in? - Answer-
gallons per minute
What is the turnover rate for a swimming pool? - Answer-Every 6 hours
, What is the equation for surface area of a rectangular or square pool? - Answer-length x
width = surface area
What is the equation for surface area of a circular pool? - Answer-71 x r2 = surface area
What is the equation for the volume of a swimming pool? - Answer-length x width x
depth x 7.48 = volume
What is the amount of time it takes for the total volume of pool water to pass through the
circulation system? - Answer-turnover rate
What is the equation for minimum required flow rate? - Answer-(volume of pool/turnover
rate)/60 = flow rate
What primarily forms in a swimming pool because of poor pool water circulation? -
Answer-Algae
What can penetrate into the plaster of the pool surface and cause damage and is the
most difficult type of algae to control? - Answer-Black algae
What must be done in order to remove stains from the interior pool surface? - Answer-
The pool must be drained and acid washed
What requires special handling and is heavier than air and must be stored in rooms that
are well ventilated? - Answer-Chlorine gas
What is the recommended level of free chlorine in a swimming pool? - Answer-1 to 10
parts per million (ppm)
What can be done with chlorine to remove a chlorine odor emanating from a pool? What
is the odor usually caused by? - Answer-shocking the pool with chlorine; chloramines
What can be added to the water and will sanitize the water and prevent the growth of
algae? - Answer-chlorine
What can be added to the pool water to raise the chlorine? - Answer-Adding liquid or
dry chlorine
When should the pool operator close the pool to swimming? - Answer-if he ever finds
the water has become cloudy and he cannot see the main drain
What not only kills germs, but will oxidize organic matter in pool water? - Answer-
Chlorine
