Pool Operator Exam Practice Questions With Complete Solutions Latest Study Guide 2023/2024 (Graded 100%)

Pool Operator Exam Practice Questions With Complete Solutions Latest Study Guide 2023/2024 (Graded 100%). The strong suction in the pool (ENTRAPMENT) is the - Main Drain Electrical systems in the pool must have - GFIs (Ground Fault Circuit Interrupters?) The skimmer _____ prevents floating debris from re-entering the pool - WEIR What is filtration? - Physical process of water moving through the system What is the turnover rate in most jurisdictions? - 6 hours The turnover rate is? - Time it takes for all the water to go through the filter system Algae forms because of ? - Poor circulation To remove stains from the pool bottom and walls you need to? - Drain and acid wash the pool What does adding chlorine to the pool do? - Raises Ph level The formula for AREA - length x width What is the surface area of a pool 50 ft wide and 100 feet long - 5000 square feet Formula for pool volume - length x width x depth x 7.48 The volume of water in a rectangular pool that is 12 feet wide, 34 feet long and constant depth of 3 feet - 9155 gallons Circular pool area is? - r x 3.14 For a 15000 gallon pool with an an 8 hour turnover rate the _____ is 31.25 - Flow Rate CDC states that the number accidents related to swimming - 140000/year The minimum number of ladders in a pool - 2 ladders Stairs in a pool must have these - Handrails When a pool has a deep end of more than 5 feet, it must have these two things: - safety line and a slope line mark Pools should have both horizontal and vertical depth markers no more than - 25 feet apart The algae that causes the most damage to a pool is - Black Algae Low chlorine levels will cause ___ in the pool - Green Algae The person responsible for keeping records at the pool is - pool operator If the pool is cloudy and you cannot see the main drain, what do you do? - Close the pool to swimmers PH should be between ___ and ___ - 7.2 and 7.8 To raise pH you add... - Soda Ash To lower pH you add - Muriatic acid Chlorine levels should be between ____ and ____ - 1.0 and 5.0 Liquid chlorine is named - Sodium Hypochlorite Powder chlorine is named - Calcium Hypochlorite Chlorine comes in these forms - Liquid, gas, and powder Chlorine is added to the pool to - Oxidize organic matter When you add chlorine to the water it forms - Hydrochlorous acid Total Alkalinity of a pool should be between ? - 80 and 120 ppm Low alkalinity results in ? - Loss of pH control (pH bounce) To raise total alkalinity you should add - Sodium Bicarbonate Calcium hardness of a pool should be between - 200 and 400 Low calcium hardness causes - Scaling Cyanuric acid can not exceed - 100 ppm Metals that damage the surface of a pool are - Iron, Manganese and Copper The filter medium that can filter the smallest particles is - Diatomaceous Earth ______ means that over the course of time the sand in the filter becomes bad - Channeling As the dirt in the filter accumulates the flow of the water going to the pool... - Decreases In order to remove dirt/particles form the filters you have to - Backwash High rate sand filters are able to filter - 15-20 square foot of water per minute The flow of water through the filter is measured in - gallons per minute GPM