AFO Aquatic Facility Operator case studies
AFO Aquatic Facility Operator · Put your knowledge to work in context.
The Aquatic Facility Operator (AFO) certification is a professional credential offered by the National Recreation and Park Association (NRPA) for the people who run the mechanical, chemical and safety systems behind a pool - not just the deck. It is built for pool operators, aquatics supervisors, maintenance and facilities staff, and parks agency employees who are accountable for day-to-day water quality, circulation equipment and facility risk. The AFO Aquatic Facility Operator case studies are 5 cases and about 6,084 words.
1The Dichlor Habit: Combined Chlorine, CYA, and a Low ORP That Looks Fine
A 75,000-gallon indoor municipal pool operates 7 days a week at 84°F. Three weeks ago staff switched from sodium hypochlorite to dichlor tablets in a floating feeder "to simplify dosing." Today at 14:00, after 310 bathers since opening, readings are: free chlorine 2.4 ppm, combined chlorine 0.9 ppm, pH 7.4, total alkalinity 95 ppm, cyanuric acid 68 ppm, ORP 615 mV.
1,186 words, about 6 min2Suction-Side Vacuum, Air in the Basket, and a Turnover That No Longer Complies
A 180,000-gallon outdoor lap pool is served by two 300-square-foot rapid sand filters and a 15-hp centrifugal pump rated 500 gpm at 60 feet of head. Your jurisdiction requires a 6-hour turnover.
1,097 words, about 5 min3Saturday at 4:15: Bather Load, a Missed Rotation, Sun Glare, and a Cracked Drain Cover
on a Saturday in July. Your outdoor pool has 190 bathers on deck and in the water.
1,231 words, about 6 min4A Gauge That Never Moves, a Channeled Sand Bed, and a Heater That Keeps Tripping
A 216,000-gallon pool is designed for a 6-hour turnover (600 gpm). The flow meter reads 380 gpm.
1,219 words, about 6 min5Unannounced Inspection: Seven Findings and One Hour to Sort Them
Your county health inspector arrives unannounced at 10:00 a.m. Tuesday at your indoor facility: a 25-yard, six-lane lap pool of 135,000 gallons and a 6-person spa with a nominal setpoint of 104°F.
1,351 words, about 7 min