Pool and Hot tub CPO practice Exam | Questions & 100% Correct Answers (Verified) | Latest Update | Grade A+

ou are the operator for a pool which is 164 feet long and 80 feet wide. The pool bottom has a constant slope which is 4 feet deep at the shallow end, and 10 feet deep at the deep end. What is the volume of this pool in gallons? Correct Answer: f You operate a pool which uses high rate sand filters. You discover that your filter tank has developed a major leak and must be replaced. Your pool operates with a flow rate of 525 GPM. Using a filter media rate (fmr) of 15 gallons per minute, what size sand filter would you need to replace your damaged filter? Correct Answer: fdsd Which chemical is used to lower the pH value of pool or spa water? Correct Answer: You have a 25,000 gallon hotel pool with a calcium hardness level of 170 ppm. How much calcium chloride (77%) would be required to increase this to 250 PPM? 2 Correct Answer: The daily opening checklist should be used to: Correct Answer: Evaporation heat losses from a pool are highest under which environmental condition? Correct Answer: How much sodium thiosulfate would you need to lower the free chlorine from 18 ppm to 2.0 ppm in an 150,000 gallon pool? Correct Answer: When should you backwash high rate sand filters that have a single pressure gauge? Correct Answer: Oxidation Reduction Potential testing (ORP) is measured in: Correct Answer: The reagent commonly used to test pH is: Correct Answer: What condition mandates an immediate closure of your swimming pool? 3 Correct Answer: When mechanical cooling is used on an indoor therapeutic pool facility, the recommended ASHRAE fresh air exchange rate should be: Correct Answer: The Occupational Safety and Health Administration (OSHA) requires aquatic facilities to maintain: Correct Answer: An erosion chemical feeder is what type of feeder? Correct Answer: Cyanuric acid (stabilizer) protects free chlorine (FC) against effects of: Correct Answer: Which type of filter requires the least amount of water