POOL OPERATOR EXAM -

POOL OPERATOR EXAM -

QUESTIONS AND CORRECT DETAILED ANSWERS

(VERIFIED ANSWERS) |AGRADE

bromine is sometimes used as a disinfectant because - ANSWER- it is more stable at a higher temperature than chlorine

components and materials used for commercial swimming pools spas and hot tubs must comply with what standard - ANSWER- ansi/nspa standard 5

a pool should be free from - ANSWER- floating debris, sediment and dirt, algae

a shepherds hook must be attached to a - ANSWER- 16 foot one piece pole

filtration is - ANSWER- the process of removing suspend particles form the water

the volume of water going through filter system is measured - ANSWER- in gallon per minute

if a pool has a volume of 75000 gallons and the turnover rate is 8 hours the minimum required flow rate is - ANSWER- 156.25 gallons per minute

microorganisms can be shielded from disinfectants if they are in suspended particles. this situation is caused by - ANSWER- high turbidity levels

the chemical name for dry chlorine is - ANSWER- calcium hypochlorite

adding liquid or dry chlorine to the pool water has the following effects on ph - ANSWER- will raise the ph

alkalinity of swimming pool water is recommended to be maintained at - ANSWER- 80-140 ppm

chlorine is used in pool water to not only kill germs but to - ANSWER- oxidize organic matter

to becoming a certified pool operator a person must - ANSWER- successfully complete training course in pool operations approved by local jurisdictions

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handrails should be anchored into the - ANSWER- pool deck and bottom step

an aid in removing small particles from the pool water is - ANSWER- a flocculent

to clean a cartridge filter - ANSWER- soaked in degreaser and hosed off

the amount of time that it takes for the total volume of pool water to pass through the circulation system is called - ANSWER- turnover rate

stains on the interior pool surfaces are usually caused by - ANSWER- copper manganese iron

the chemical name for liquid chlorine is - ANSWER- sodium hypochlorite

the recommend range to maintain ph is - ANSWER- 7.2-7.8

to raise the alkalinity level in swimming pool water what chemical is added - ANSWER- sodium bicarbonate

chloramines are - ANSWER- a combination of chlorine and ammonia in pool water

accodoring to statistics from cdc how many water-related injuries are annually associated with swimming activities - ANSWER- 140000

cloudy water may be caused by - ANSWER- filter malfunction, excessive bather load, chemical imbalance of pool water

in most jurisdictions the turnover time for a swimming pool is - ANSWER- every

• hours

which type of algae inmost difficult to control in a pool, often requiring chlorination and brushing to eliminate - ANSWER- black algae

the recommend level of free chlorine in the swimming pool water is - ANSWER- 1-5ppm

to lower the ph add - ANSWER- muriatic acid

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