Certified Pool Operator Handbook Practice Test

Certified Pool Operator Handbook
Practice Test – 2017 Latest

"13. You are the CPO for a large municipal swimming pool. This pool has a volume of
560,000 gallons of water,and has an average daily bather load of 1300 people. The pool
is operated using high rate pressure sand filters. How often should you backwash the
filters?" - correct answer--When the influent and effluent gauges are 10 to 20 psi apart

"33. You are the aquatics manager at a very busy local gym that is open 24 hours per day,
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7 days per week. This gym has a 1,850 gallon spa. This spa is in almost constant use with a
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bout 100 bathers per day using the spa (on - correct answer--
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1. You operate a 120,000-
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gallon pool, and upon performing your hourly chemical tests you observe the following rea
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dings: Total Available Chlorine reading is 1.6 free available chlorine reading is 1.5 pH is 7.4
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Your supervising lifeguard has just informed you that you have had a fecal incident occur;
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a solid stool has been discharged into the pool. According to the Centers for Disease Contr
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ol, as the CPO, you should do the following: - correct answer--
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clear the pool and raise the free chlorine to 2 ppm
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10. You are the CPO for a 28,000 gallon hotel pool. You perform a water balance chemical
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test, and to your surprise, the Calcium Hardness is only 100 ppm. How much calcium chlori
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de (77%) would be required to increase this to 400 ppm?" - correct answer--100.8 lbs.
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100. The flow requirement of a rapid rate sand filter during backwashing is gpm per sq. ft. -
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correct answer--12-15
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101. The backwash ratio for high rate sand filters is ____ - correct answer--1:1
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102. is the maximum flow rate per sq. ft. for both pressure and vacuum type DE filters in pu
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blic pools without slurry. - correct answer--2 gpm
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103. The commonly accepted amount of precoat for DE filters is ____ pounds per each sq.
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ft. of surface area. - correct answer--0.125
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104. To destroy harmful organisms in pool water, the accepted minimum of free chlorine is
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____ ppm and many health codes set the maximum FC at ppm. - correct answer--1, 5
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105. With an incident of diarrheal discharge in a pool, the free available chlorine should be r
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aised to _____ ppm. - correct answer--20
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, 106. Chlorine added after the breakpoint is reached will exist as . - correct answer--
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free chlorine 7




107. Sodium hypochlorite in its commercial form contains percent available chlorine. -
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correct answer--10-12
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108. Calcium hypochlorite contains percent available chlorine by weight. - correct answer-
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-65

109. Bromine is similar in many respects to chlorine, however, bromine cannot be used for
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. - correct answer--stabilization
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11. You are the CPO for a 100 foot long, 50 foot wide country club pool. The average depth
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of this pool is 7 feet. You return to the pool on Monday morning, after a rare weekend off, an
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d find that the auto-
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fill feature has failed to work, and the pool water level is four inches too low. How many gall
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ons of water must be added to return the water to the proper level? - correct answer--
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12,495 gallons 7




110. The solid chlorine compound which is used when a slow release of chlorine over time i
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s desired is called: - correct answer--trichlor
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111. Proper pH control of provides better chlorine efficiency. - correct answer--7.2-7.4
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113. It is essential to maintain total alkalinity at ppm in plaster pools. - correct answer--80-
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120

114. To control scaling, pool water that exceeds ppm hardness should be diluted or replac
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ed with water of substantially lower hardness. - correct answer--800-1000
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115. In determining cost for heating, it is best to size the heater to the number of gallons of
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water in the spa and in the spa and to the desired temperature. BTUs will heat 1 gallon of w
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ater 1 degree F. - correct answer--8.33
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116. A _________ is used to radiate the high temperature of the water and cool it enough t
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o allow the remainder of the circulation piping to the PVC. - correct answer--Heat sink
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12. You are the operator of a 3,000 gallon health club spa, which has an average of 100 us
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ers per day. According to the CPO Handbook, how often should the water in this spa be ch
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anged? - correct answer--10 days 7 7 7 7




14. In testing for Chlorine/Bromine in a commercial pool, DPD is preferred over OTO beca
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use: - correct answer--OTO only tests for Total Chlorine
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15. Safety and rescue equipment should always be: - correct answer--
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Kept easily accessible around the pool
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