AQUATIC FACILITY OPERATOR (AFO)
CERTIFICATION EXAM | NRPA
OFFICIAL STUDY GUIDE & 200+
PRACTICE QUESTIONS WITH VERIFIED
ANSWERS PDF
What is NOT one of the AFO's primary responsibilities? - answer- Teaching Lessons
What should you do every day as a part of your AFO safety duty program? - answer-
Facility Inspection
How many gallons of water is in one cubic ft? - answer- approximately 7.5
How do you calculate how many gallons are in a pool? - answer- 1. calculate the
volume (LxW)xDavg
2. multiple by 7.5 gallons
Law of Dilution - answer- During a turnover less than half of the water molecules pass
through the filter
What kind of pools need a higher turnover? - answer- Special pools
When do gutters NOT work? - answer- when flooded
What do surge pits need? - answer- room to contain surge flow
What do modulating float valves regulate? - answer- the amount of water contributed by
the bottom outlet by slowly restricting the bottom drain valve as the water level in the
surge pit rises
What are the two types of pumps? - answer- Self-Priming and Flooded Suction
Centrifugal
4 inches = - answer- 400 gpm
What does eliminating dead spots mean? - answer- Heated and treated water is equally
distributed in the pool
Horizontal High Rate Sand Filter - answer- increases surface area
CERTIFICATION EXAM | NRPA
OFFICIAL STUDY GUIDE & 200+
PRACTICE QUESTIONS WITH VERIFIED
ANSWERS PDF
What is NOT one of the AFO's primary responsibilities? - answer- Teaching Lessons
What should you do every day as a part of your AFO safety duty program? - answer-
Facility Inspection
How many gallons of water is in one cubic ft? - answer- approximately 7.5
How do you calculate how many gallons are in a pool? - answer- 1. calculate the
volume (LxW)xDavg
2. multiple by 7.5 gallons
Law of Dilution - answer- During a turnover less than half of the water molecules pass
through the filter
What kind of pools need a higher turnover? - answer- Special pools
When do gutters NOT work? - answer- when flooded
What do surge pits need? - answer- room to contain surge flow
What do modulating float valves regulate? - answer- the amount of water contributed by
the bottom outlet by slowly restricting the bottom drain valve as the water level in the
surge pit rises
What are the two types of pumps? - answer- Self-Priming and Flooded Suction
Centrifugal
4 inches = - answer- 400 gpm
What does eliminating dead spots mean? - answer- Heated and treated water is equally
distributed in the pool
Horizontal High Rate Sand Filter - answer- increases surface area
