Pool Operator Exam Questions and Answers Graded A+

Pool Operator Exam Questions and Answers Graded A+ To be a pool operator you must Complete a pool operator training course To prevent spinal injury All of the above 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 /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 Chloramines are what combined? Chlorine and Ammonia To have breakpoint level of chlorine at a pool you must have what? 10 times the level of Chloramines If a patron smells chloramines (bad chlorine) you must do what? Shock the pool - raising the chlorine level to 10 Shocking the pool is also called what Breakpoint Chlorination of the pool water If patrons complain of red eyes and odor that means Chloramines are present The max temperature of a spa is 104 Fahrenheit If you are using gas chlorine at your pool then what needs to be well ventilated Filter room If there is no diving allowed the sign NO DIVING needs to be posted where? Every 20 feet Commercial swimming pools and spas are regulated by ASPIINSPA Resistance is caused by what? Friction and Head Loss Handrails are anchored to what two places? Pool deck and bottom step To clean a cartridge filter you must do what Soak it in degreaser and hose it off Why is bromine used? It is more stable at high temperatures Cyanuric acid is commonly called? Stabilizer How fast does Chlorine kill bacteria when added to a pool? Immediately Chlorine in a natural state is what? Green colored gas Pressure differential should never exceed what 10 P.S.I. What is the most difficult algae to control and it often needs superchlorination and brushing Black Algae What does a sequestering agent do? Prevent precipitation of minerals on the surface of the pool Cloudy water (turbid water) may be caused by what Poor filtration/circulation, unbalanced water (on the scaling side), algae bloom (in this case the pool's surface is slippery), heavy bather load, and suspended solids A shepherd's hook must be on a what? 16 foot fixed pole (not telescopic) What is an aid for removing small particles from the pool Flocculent Sunlight, hot weather, and high bather load contribute to what? Accelerated growth of algae Sodium hypochlorite (liquid chlorine) deteriorates quickly in what conditions? Heat, sunlight and contamination Microorganisms can be shielded from disinfectants if they are in suspended particles. This caused by what? High Turbidity levels When you are handling pool chemicals you must wear what equipment? Googles, apron, and gloves Bubbles in the water mean what? Air in the filter Cyanuric acid is commonly called Stabilizer If the filter is full of dirt then what increases and what decreases? Influent pressure INCREASES and Effluent pressure DECREASES ***know the difference between surface area and volume read through*** When testing pH, what does it mean if the sample is yellow? pH is too low Which of the following is not a primary job of a pool operator? Ensuring the patrons have fun at the pool An acceptable level of of free chlorine (good chlorine) at a spa is what? 4.0 ppm The strongest point of suction that can lead to entrapment and drowning in a pool is where? Main Drain You test the pool and observe that calcium hardness is too high. What chemical should you add to lower the calcium hardness? YOU DO NOT NEED TO ADD CHEMICALS. You must drain the pool and replace it with fresh water to lower the calcium hardness. The pool operator is responsible for maintaining what? The daily pool operation log What does channeling mean when discussing swimming pool filtration? A damaging condition that occurs over time in a sand filter You arrive at the pool and the phone isn't working. What do you do? Keep the pool closed until the telephone is repaired and working