Certified Pool Operator Question & Answer (Verified)

Certified Pool Operator Question & Answer (Verified) 12 Reasons why the health inspector will close your pool - CORRECT ANSWER-1. pump filter not working for more than an hour 2. main drain is not visible 3. chemical readings out of range 4. no pool operator (15 minute grace period) 5. no lifeguard or cpr certs present 6. water is below the skimmer line 7. danger to the public 8. chlorinator is not working 9. health inspector is not allowed in 10. bathrooms + drains not working 11. flow rate is too low 12. no phone (landline) Measuring records as the CPO - CORRECT ANSWER-Operator must test the water for Cl and pH every hour, and Total Alkalinity, Calcium Hardness and Cyanuric Acid once per week. Records must be maintained on site and available for at least 2 years at the pool and 3 years total. 5 Factors of Water Balance - CORRECT ANSWER-pH, Total Alkalinity, Calcium Hardness, Temperature, and total dissolved liquids Corrosive water - CORRECT ANSWER-pH is too low, dissolves everything it contacts scaling water - CORRECT ANSWER-pH it too high, mineral deposits on walls or pipes Regulated pH range - CORRECT ANSWER-7.2-7.8 pH reading is tested with Phenol Red To lower pH, - CORRECT ANSWER-add muriatic acid To raise the pH, - CORRECT ANSWER-add sodium carbonate (Soda Ash) 2. sodium bisulfate 3. carbon dioxide Total Alkalinity - CORRECT ANSWER-represents the amount of carbonates, bicarbonates, and hydroxides in a solution - you want this to be high, because the pH resists changes in fluctuating pH Bounce - CORRECT ANSWER-low alkalinity Regulated Total Alkalinity range - CORRECT ANSWER-60-180 ppm ideal goal is 100ppm To lower Total Alkalinity, - CORRECT ANSWER-add muriatic acid To raise Total Alkalinity, - CORRECT ANSWER-add Baking Soda Calcium Hardness - CORRECT ANSWER-amount of calcium and magnesium in the water (mineral content in water) Regulated calcium hardness range - CORRECT ANSWER-150-400ppm To raise Calcium Hardness, - CORRECT ANSWER-add calcium chloride Total Dissolved Liquids (TDS) - CORRECT ANSWER-sum of all organic and inorganic materials dissolved in the water- cannot be eliminated with a chemical----- <1500 ppm allowed in water Temperature - CORRECT ANSWER-Max temps = 88 for swimming pool 96 for therapy pool 104 for hot tub Saturation Index - CORRECT ANSWER--.5-.5 check once a week for a pool, everyday for a spa Employees have the right to know: - CORRECT ANSWER-- may come into contact w/blood -may come into contact w/ dangerous chemicals - personal protection - material safety data sheet Cyanuric Acid (CYA) - CORRECT ANSWER-chemical used to stabilize an outdoor pool (not UV light sensitive) added directly through the skimmer, Regulated Cya levels - CORRECT ANSWER-30-100 ppm Sodium Hypochlorite NaOCl - CORRECT ANSWER-Liquid Chlorine, or bleach Chlorine Breakdown FAC's and CAC's - CORRECT ANSWER-Free Available Chlorine = good chlorine (disinfects) Combined Available Chlorine = Chloramines = bad stuff you can smell, ammonia and no disinfectants Regulated range for FAC's - CORRECT ANSWER-1.5-10 for a pool 3-10 for a wading po