pool operators license test exam 2023 with 100% correct answers

how many water related injuries occur annually according to the CDC 140,000 Diving Rules no diving in under 6ft of water and only dive from boards or stands shallow end stairs rules must have hand rail for built in stairs who is responsible for maintaining the operation log the certified pool operator main drain of the pool strongest suction that may result in entrapment or drowning how many letters or stairs are the minimum requirement 2 What is filtration? the physical process of removing suspended particles from the pool water what is channeling damaging condition that occurs over time in a sand filter what is backwashing process of removing accumulated particles inside a sand filter what is the rate of high rate sand filters 15-25 gallons per minute per square foot what is the volume of water going through filter system measured in gallons per minute turnover rate for swimming pool 6 hours equation for surface area or rectangle or square pool length x width =surface area surface area equation for circular pool (pie)(r^2)= SA equation for volume of swimming pool (L)(W)(D)(7.48) what is the definition of turnover rate amount of time it takes for the total volume of pool water to pass through the circulation system equation for minimum required flow rate (volume of pool/ turnover rate)/60 why does algae form in swimming pool because of pool water circulation what can black algae lead to it can penetrate into the plaster of the pool surface and cause damage and is the most difficult type of algae to contorl