Questions and CORRECT Answers
The CDC estimates ______ water-related injuries occur annually - CORRECT ANSWER -
140,000
To prevent spinal injuries when diving in pools ____ markers should be present - CORRECT
ANSWER - "no diving"
No diving under _____ feet of water should be allowed, and diving should be allowed from
diving boards or stands - CORRECT ANSWER - 6
______ are commonly used in the shallow end of pools and must have a secure____ -
CORRECT ANSWER - Built-in stairs
handrail
The certified pool op is responsible for maintaining the ______ - CORRECT ANSWER -
daily pool operation log
main drain - CORRECT ANSWER - Strongest point of suction in a pool that may lead to
entrapment and drowning of a bather
There much be at least __ ladders or stairways provided in a pool for adequate access and egress
for swimmers - CORRECT ANSWER - 2
Filtration - CORRECT ANSWER - the physical process of removing suspended particles from
the pool water
As dirt accumulates inside a filter - CORRECT ANSWER - the amount of water that can pass
through the filter decreases
, Channeling - CORRECT ANSWER - A damaging condition that occurs over time in a sand
filter
Backwashing - CORRECT ANSWER - the process of removing accumulated particles from
inside a sand filter
High-rate sand filters typically have a filter rate of ___ gallons per minute per square foot -
CORRECT ANSWER - 15-25
Gallons per Minute (gpm) - CORRECT ANSWER - how the volume of water going through
the filter system is measured
The turnover rate for a swimming pool is every - CORRECT ANSWER - 6 hours
Equation for surface area of a rectangular /square pool - CORRECT ANSWER - Length x
Width = SA
Equation for Surface Area of a circular pool - CORRECT ANSWER - Pi x Radius ^2 = SA
The equation for the volume of a swimming pool: - CORRECT ANSWER - length x width x
depth x 7.48= volume
The turnover rate - CORRECT ANSWER - the amount of time it takes for the total volume of
the pool to pass through the circulation system
the equation for minimum required flow rate - CORRECT ANSWER - (Volume of the
pool/turnover rate)/60 = flow rate
Algae primarily forms in a pool because - CORRECT ANSWER - poor pool water circulation