Pools Flashcards
Pool size that does not have to follow construction standards
20,000 square ft
Trainings for life guard
1st aid and CPR
Indoor pool ventilation formula
Outdoor air flow = 0.48 x Az = _____ cubic ft/meter
Az
The net occupiable floor of the zone in square ft, surface area plus 6 ft around pool
Size of hose attached to hose bib
75 ft
How to protect a hose
Use back flow prevention
Hot water limit for showers
110 F
Pool temperature max and min
No min - 104 F
Cyanuric acid
Stabilizer/conditioner, slows down chlorine decay, excessive levels interfere with effectiveness of chlorine
How to dilute cyanotic acid
Dilute water
Cyanotic acid taste
Salty
Pool operation records
Done every 2 years
Steps for fecal, vomit, blood, near drowning in pool
Immediately close pool, remove contaminated water, ensure pH of 7.5 or lower and maintain pool temperature at 77 F or higher
Types of pool chlorine
Sodium hypochlorite, calcium hypochlorite, Litium hypochlorite
Consistency of sodium hypochlorite
Liquid
Consistency of calcium hypochlorite
Granular
Consistency of lithium hypochlorite
Granular
pH changes waters pH
True
Other types of sanitizers
Bromine, ozone, hydrogen peroxide, ultra-violet light ionization (salt water pools)
Main drain not visible
Close pool
pH below 7.2 characteristics
Corrosion, etching of plaster, eye and skin irritation, increase in chlorine
pH above 7.8 characteristics
Scale formation, cloudy water, staining of plaster, eye and skin irritation, drop chlorine efficiency
Auto fills
Automatic make up water flow, controls with manual override provided to maintain a proper pool
Turnover time
Pool volume going through circulation
Turnover rate for pool and spa
Pool: 6 hr
Spa: 30 min
Flow meter
Measures how much gallons of water per min
Pool capacity formula
length x width/20
Spa capacity formula
Length x width/10
Round spa capacity
Pir^2/10
Wadding pools formula
They are exempt
Volume of pools in gal
Surface area x average depth x 7.5 = gal
Flow rate
Measured in gallons/min (GPM)
Main drain
Found in the lowest part of the pool
Virginia Graeme Baker Act (AB1020)
Promotes the safe use of pools, spas and hot tubs by imposing mandatory federal requirements for suction entrapment avoidance
Skimmer
Skim leafs and debris from surface
Amount of skimmers
1 per 500 square feet of pool surface area
Impeller
Moves water through the pump and into the system
Filter
Remove every small particle from the water, particulate matter adheres to the filter media
Common types of filters
Sand, diatomaceous earth, cartridge
Order of filter effectiveness
DE: 4 microns = best
Sand: 25 microns
Cartridge: 15 microns = worst
Sight glass
Should be installed between separation tank and filter
Cartridge
Approved wash down area and pool equipment area, back wash not needed, gets disassembled, washed and reassembled
Chlorinator
Has to supply no less than 3lbs of chlorine per 10,000 gal of pool water per day
Flow rate accuracy
Needs to be within 10% of actual flow rate
Influent pressure/ vacuum gauges
Lets you know if you need to backwash, should be marked with a start and clean pressure reading
Valve location
Next to skimmer
Piping label
Label which directions and which pipes are for what
Safety signs
Letters must be no less than 4 inches, show pool capacity, no diving signs for pools less than 4 ft, emergency phone numbers, caution sign (1 in for spas) shut off sign, keep gate closed, diarrhea sign
Diarrhea sign
14 days, no pool
Spray ground/splash pads sign
Recirculating water
Safety equipment: life ring
Must be 3/16ths of an inch thick, 17 inches in diameter, rope has to be length of pool
Pool body hook
Must be permanently attached to a rescue pole at 12 feet
Pool gates
Pool should be closed with a gate of at least 5 feet with a self close gate
Fence/gate gap
No more than 4 inches, should not be climbable
Pool deck
4 ft wide around the pool completely unobstructed
Pool color
White
Ground fault circuit interpreters (GFCI)
Will sense problems with light and shut it off
Shallow limited height
Cannot be deeper than 3 1/2 feet
Tiles
Non-slip and tells the deepness
Can pool and spa share systems?
No