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Aquatic Facility Operator Questions with Complete Solutions
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What is NOT one of the AFO's primary responsibilities? - CORRECT ANSWER Teaching Lessons What should you do every day as a part of your AFO safety duty program? - CORRECT ANSWER Facility Inspection How many gallons of water is in one cubic ft? - CORRECT ANSWER approximately 7. How do you calculate how many gallons are in a pool? - CORRECT ANSWER 1. calculate the volume (LxW)xDavg
Suction Centrifugal
pH of soda ash - CORRECT ANSWER dissolved in water pH 13+ Safety considerations for chemical handling require what? - CORRECT ANSWER eye wash station When are chloramines formed? - CORRECT ANSWER under a heavy organic load with low chlorine levels, often with limited air movement How do you get rid of chloramines? - CORRECT ANSWER you super chlorinate How do you obtain combined chlorine? - CORRECT ANSWER (TC)-(FC) = combined chlorine How do you calculate breakpoint calculation? - CORRECT ANSWER multiply CC by 10 What should you always do when handling chemicals? - CORRECT ANSWER wear protective equipment For CSI, what does negative/positive mean - CORRECT ANSWER Negative = aggressive Positive = scaling What is the most influential variable in the CSI? - CORRECT ANSWER pH What is the maximum spa temperature and for how long? - CORRECT ANSWER 104 degrees for 15 minutes
What is total Alkalinity? - CORRECT ANSWER this is an index of the water's resistance to pH change What is the best recommendation for CH levels in pools? - CORRECT ANSWER 300-600ppm Why are pool heaters prone to scale? - CORRECT ANSWER because calcium carbonate is more likely to form on elevated temperatures with automation, why are large feed system important? - CORRECT ANSWER In order to meet set points quickly What is the most important factor related to pool water chemistry? - CORRECT ANSWER pH What should you automate if you can only afford to automate one? - CORRECT ANSWER pH What do typical chemical controllers measure? - CORRECT ANSWER ORP and pH What do chemical controllers NOT replace? - CORRECT ANSWER pool operator What is oxidation reduction potential (ORP)? - CORRECT ANSWER qualitative measure of chlorine's work value (how well it's working) What is the standard minimum ORP for virtually instantaneous pathogen deactivation? - CORRECT ANSWER 650mV