To be a pool operator you must - ANSWER:complete pool operators training course
To prevent spinal injury - ANSWER:all of the above
the strongest suction in the pool (ENTRAPMENT) is the - ANSWER:main drain
electrical system at the pool must have - ANSWER:GFIs
The skimmer - ANSWER:weir prevents floating material from re-entering the pool
Filtration is the - ANSWER:physical process of water moving through the system
in most jurisdictions the turnover rate is - ANSWER:6 hours
the time it takes for all the water to go through the filter system is the - ANSWER:turnover rate
algae forms because of - ANSWER:poor circulation
to remove stains from the pool surface - ANSWER:drain and acid wash the pool
adding chlorine to the pool - ANSWER:RAISES pH
the formula for area is - ANSWER:length multiplied by width (number x number)
the formula for volume is - ANSWER:length multiplied by width by depth by 7.48
to measure the area for a circular pool - ANSWER:the answer is 314
for a 15,000 gallon pool with an 8 hour turnover rate the - ANSWER:RATE OF FLOW IS 31.25
CDC states that the number of accidents related to swimming are: - ANSWER:140,000
minimum numbers of ladders required in a pool are - ANSWER:2
stairs in a pool must be accompanied by a - ANSWER:handrail
When a pool has deep water more than 5 feet must have - ANSWER:a safety line and a slope line mark
Pool should have depth markers that are - ANSWER:ALL OF THE ABOVE - horizontal, vertical and no more
than 25 feet apart
the color of algae that causes damage to pool surface is - ANSWER:black algae
low chlorine in the pool will cause or result in - ANSWER:green algae
the person responsible for keeping records at the pool is the - ANSWER:pool operator
if the pool is cloudy and you cannot see the main drain - ANSWER:CLOSE THE POOL TO SWIMMERS
to raise the pH you should add - ANSWER:Soda ash
, to lower the pH you should add - ANSWER:muriatic acid
chlorine levels should be between - ANSWER:1.0 and 5.0
Liquid chlorine is named - ANSWER:sodium hypochlorite
powder chlorine is called - ANSWER:calcium hypochlorite
chlorine comes in - ANSWER:liquid, powder, and gas (ALL OF THE ABOVE)
chlorine is added to the pool to - ANSWER:oxidize organic matter
when you add chlorine to water it makes - ANSWER:hypochlorous acid
total Alkalinity of a pool should be between - ANSWER:80-140
Low alkalinity in a pool causes - ANSWER:loss of pH control, or pH bounce
to raise _________ you should add ____________ - ANSWER:1. total alkalinity
2. sodium bicarbonate
Calcium hardness of a pool should be between - ANSWER:200-400
Cyanuric Acid level cannot exceed - ANSWER:50 PPM
Metals that damage the surface of the pool are - ANSWER:Iron, manganese, copper (ALL OF THE ABOVE)
The filter medium that can filter the smallest particles is - ANSWER:diatomaceous earth
channeling means - ANSWER:over the course of time the filter and sand is bad
as the dirt in the filter _____________ the flow of water going through the filter ____________ -
ANSWER:1. accumulates
2. decreases
the term or explanation for removing the dirt/particles from the filter is - ANSWER:Backwashing
High Rate Sand Filters are able to filter how much water per minute per square foot? - ANSWER:15-20
the flow of water through the filter is measured in ___________ per minute - ANSWER:gallons
to have breakpoint level of chlorine at a pool you must have - ANSWER:ten times the level of
chloramines
If a patron smells chloramines (bad chlorine) you should - ANSWER:shock the pool
the maximum temperature in a spa is - ANSWER:104 farenheit
if you are using gas chlorine at a swimming pool the filter room must be - ANSWER:well ventilated
if there is no diving well ________________ should be posted every __________ - ANSWER:1. "NO
DIVING"
2. 20 feet