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Pool Operator Exam 2023/2024 already graded A+
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Pool Operator Exam 2023/2024 already graded A+
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Pool Operator Examwhole range chlorine in a pool: ____ to _____ - ANS1, 5
ideal range chlorine in a pool: ____ to _____ - ANS2, 4
whole range chlorine in a spa: ____ to _____ - ANS2, 10
ideal range chlorine in a spa: ____ to _____ - ANS3, 5
4 types of solid chlorine - ANScalcium hypochlorite, lithium hypochlorite, trichlor, dichlor
liquid chlorine - ANSsodium hypochlorite (NaOCl)
how active is gas chlorine - ANS100%
the active killing form of chlorine in water - ANShypochlorous acid (HOCl)
HOCl = ______ - ANSH+ (hydrogen ion) + OCl- (hypochlorite ion)
most common granular chlorine (pH range) - ANScalcium hypochlorite (8.5 - 11, used to super
chlorinate water)
not common form of chlorine due to low active strength (pH) - ANSlithium hypochlorite (10.8)
tablet/stick chlorine usually used in erosion feeder (pH - what will it do?) - ANStrichlor (2.8 - 3.5,
lower alkalinity and pH over time)
salt used as a disinfectant (pH) - ANSdichlor (6.7 - common in vinyl lined pools)
most common type of chlorine used (pH) - ANSsodium hypochlorite (NaOCl - 13)
______ needs special training to use and has a pH of ____ and will _____ when added to water
- ANSgas chlorine, 0, lower pH
chlorine is most effective as a pH of _____ - ANS7.5
active disinfectant in the water - ANSfree chlorine (FC)
FC is determined by the ______ test and is maintained between ____ and ____ ppm -
ANSDPD, 2, 4
, equal to the amount of hypochlorous acid (HOCl) and the amt of hypochlorite ions (OCl-) -
ANSfree chlorine (fc)
the result of free chlorine reacting with organic compounds - ANScombine chlorine (CC)
common name and max for pools and spas for combine chlorine - ANSchloramines, 0.2, 0.5
CC = - ANSTC - FC
what will a DPD measure - ANSTC, FC
how much CC should a pool have ideally - ANSzero
shocking the pool is also called - ANSbreakpoint chlorination
breakpoint chlorination is the conversion of ________ into ______ - ANScombine chlorine,
nitrogen gas
breakpoint chlorination equation - ANSBPC = 10 x CC [BPC = 10 x (TC - FC)]
whole cyanuric acid range: _____ to ______ppm - ANS0, 100
ideal cyanuric acid range: _____ to ______ ppm - ANS30, 50
acts as a protection for chlorine compounds from UV light - ANScyanuric acid
CyA will act as a stabilizer for _______ but does not
stabilize ________ - ANSfree chlorine, bromine
The only way to reduce CyA concentration is to _______ - ANSdilute the water and replace it
whole range of bromine: ____ to _____ - ANS2, 10
ideal range of bromine: _____ to ______ - ANS4, 6
second most common disinfectant in the pool - ANSbromine
two types of bromine used - ANSsodium bromide, solid bromide
Bromine in natural form is a ______ but is in _____ form when
added to pools - ANSreddish brown liquid, solid
__________ is similar to hypochlorous acid - ANShypobromous acid
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