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Pool Operator Certification Exam Latest
Updated Graded A+
Class A pool - ANS--any pool intended for use by accredited competitive aquatic events -can be used for recreational purposes Class B pool - ANS-any pool intended for public recreational use Class C pool - ANS--any pool intended for use by apartments, condominiums, property owners associations, multi-family owned pools, etc. -includes pools operated solely for lodgings such as hotels/motels Class D pool - ANS-any pool operated for special purposes such as vortex pools, sand bottom pools, splash pools, float tanks and interactive water attractions Class E pool - ANS-any pool used for physical therapy and operated above 86 degrees F Class F pool - ANS-any pool used for wading purposes primary concern of the health inspector is: - ANS-the health and safety of the community of pool users enforcement begins with: - ANS--the approval of the original construction design -regular on sit inspections of the facility operation manager's primary responsibility is: - ANS-to make sure that the team understands what is expected of them and that they have the tools they need to get their jobs done four management work functions - ANS-planning organizing leading controlling key functions of leading - ANS-decision making motivating communicating hiring staff development key functions of controlling - ANS-standards measuring evaluating correction
SMART - ANS-specific measurable achievable relevant time-based negligence - ANS--concerned with unintentional fault or carelessness resulting in injury -avoidable accidents that should have been anticipated and prevented by taking reasonable precautions standard of care - ANS--a measure used to establish a standard against which actual conduct is judged duty of care - ANS-the amount of reasonable care owed to individuals using the aquatic facility who should become a certified pool operator? - ANS--any individual who makes changes to the water quality, or performs routine maintenance of swimming pool system components -any individual who evaluates and adjusts the pool water chemistry danger - ANS--strongest signal word -user must be extremely careful handling product warning - ANS--less strong than danger -means that the user could become very ill or badly injured by exposure caution - ANS--shows the product could be harmful but less harmful than products with a danger or warning signal -could cause skin irritation, illness if fumes are breathed or trauma if product contacts the eyes to reduce the risks of poisoning from chlorine gas: - ANS-the EPA requires that use in nonresidential swimming pools be restricted to certified pesticide applicators, or to those under their direct control SARA Title III exists to: - ANS-encourage emergency planning efforts at the state and local level, regarding the release or spill of hazardous or toxic chemicals SARA Title III includes: - ANS-aluminum sulfate ammonia calcium hypochlorite chlorine gas hydrogen peroxide muriatic acid
- backwash the filter after full disinfection time
- return the chlorine level to normal levels Contamination Time (CT) value - ANS--the concentration of free chlorine in ppm times time in min what is the CT value for giardia? - ANS- what is the CT value for crypto - ANS-15, hypochlorous acid (HCl) - ANS--inactivates pathogens and alage -oxidizes -the active killing form of chlorine in water free chlorine - ANS-the active available disinfectant in the water FC= HoCl + OCl- combined chlorine - ANS-forms when free chlorine reacts with 2 types of contaminants in the water pathogens - ANS-bacteria, fungi, viruses and protozoan parasites available chlorine content (acc) - ANS--comparison of the relative amount of chlorine released into water for different chlorine disinfectants -developed using chlorine gas as the standard reference of 100% active chlorine percentage - ANS-the percentage by weight of the technical grade active ingredient in the product how does sodium hypochlorite raise the water's Total Dissolved Solids? - ANS-by adding sodium (Na+) and chloride (Cl-) ions to the water sodium hypochlorite (NaOCl) - ANS--liquid chlorine releasing disinfectant that is the most common disinfectant used -active strength: 10-12% -ACC 10-12% -pH 9- calcium hypochlorite is used to - ANS-superchlorinate the water calcium hypochlorite - ANS--dry form of chlorine -class 3 oxidizer -continuous use may result in high calcium levels -pH 8.5- lithium hypochlorite (LiOCl) - ANS--dry, granular compound of chlorine
-rapidly and completely soluble -use for superchlorination -class 1 oxidezer chlorine generation - ANS-in line generation brine method chlorine gas - ANS--effective disinfectant -active strength 100% -ACC 100% -pH 0 cyanuric acid (CyA) - ANS--aka conditioner/stabilizer -added directly or indirectly via stabilized chlorine products -protect chlorine from UV light and sunlight -stabilizes FC but not bromine -maintain between 30 and 50 ppm excessive levels of CyA may lead to - ANS-an increased risk of algae the most common method of reducing CyA concentration is - ANS-to partially drain and replace water with fresh potable water unstabilized disinfectants are - ANS-sodium hypochlorite calcium hypochlorite lithium hypochlorite chlorine gas unstabilized disinfectants - ANS--aka inorganic disinfectants -sensitive to UV radiation and sunlight -easily automated and controlled by an oxidation reduction potential stabilized disinfectants - ANS--contain cyanuric acid as part of their molecular structure trichlor - ANS--dry compound -class 1 oxidizer -low solubility -lowers the total alkalinity and pH over time -stabilizes -releases cyanuric acid into the water dichlor - ANS--anhydrous -dichlor dihydrate -a salt, very soluble -used to superchlorinate pool and raise stabilizer level
what is the acceptable pH of pool/spa water that is slightly alkaline? - ANS-7.2-7. ideal range for pH is - ANS-7.4-7. to lower the pH add - ANS-acids or acid salts such as bisulfate to increase pH add - ANS-a basic material most common, sodium carbonate other bases: sodium hydroxide, sodium sesquicarbonate total alkalinity - ANS--a measure of the ability of water to resist changes in pH -is a buffer -like an anchor for keeping pH where it should be the ideal total alkalinity for high pH disinfectants is - ANS-80-100 ppm the ideal total alkalinity for low pH disinfectants is - ANS-100-120 ppm water will exhibit pH bounce when the total alkalinity is ___ - ANS-low low total alkalinity may result in - ANS-pH bounce etching of pool/spa surface staining of surface walls heater failure high total alkalinity may result in - ANS-pH lock cloudy water rough pool/spa surfaces clogged filters clogged heater elementes reduced circulation total hardness - ANS-the sum of calcium and magnesium in pool water, it is easier to lower the pH or total alkalinity than the calcium hardness. T or F - ANS-true what is the ideal level for calcium hardness? - ANS-200-400 ppm what is used to increase calcium hardness? - ANS-calcium chloride at higher temperatures, there is an increasing tendency for - ANS-scaling conditions at lower temperatures, there is an increasing tendency for - ANS-corrosive conditions
total dissolved solids (TDS) is the - ANS-total weight of all soluble matter in the water the lower the water's conductance, the more _____ the water. - ANS-pure disinfection chemicals added to pool water contribute to the __________ in TDS, mostly as salt. - ANS-increase bleach disinfectant makes the pH ______. - ANS-rise as TDS increases, the amount of partially oxidized and unoxidized organic contaminants ____________. - ANS-increases galvanic corrosion is observed by the - ANS-discoloration of metal parts in the water it is recommended that the TDS should not exceed _______ ppm higher than the TDS when the pool was started up. - ANS-1, excessively _______ levels of TDS will cause the water to look dull or tired and may exhibit a bad or salty taste. - ANS-high saturation index (SI) is - ANS-a method of determining whether water will deposit calcium carbonate or maintain it in solution. the ideal SI result is an SI= ___ - ANS- in balanced water, the SI should be between ___ and ___ - ANS--.3 and +. in corrosive water, the SI should be ___ and lower. - ANS--. in scaling water, the SI should be ____ and higher. - ANS-+. SI= - ANS-Tf + pH + Cf + Af - TDSf ryznar stability index (RSI) is used to - ANS-judge how to maintain calcium carbonate water balance and reduce metal corrosion RSI estimates - ANS-the degree to which calcium carbonate deposits, or scales on surfaces, or dissolves/corrodes calcium carbonate from the surface the most common use of RSI is to - ANS-minimize metal corrosion through calcium carbonate's providing a protective coating on the metal surface the maximum combined chlorine in a pool is ___ ppm - ANS-0. the maximum combined chlorine in spas is ___ ppm - ANS-0.
black a turbid green pool is usually the result of an _______ problem. - ANS-algae a translucent green pool is most likely caused by the presence of _______ in the water.
- ANS-copper ions a reddish brown tint in the water is due to _____ or __________. - ANS-iron or manganese _____ can exhibit brown, dark red or black brown water color. - ANS-iron _________ can show as a brownish black color in water. - ANS-manganese low pH makes water corrosive to copper metal, forming water-soluble copper ions. T or F - ANS-true chelation/sequestering agents are designed to: - ANS-remove or dissolve metals from the water common sequestering/chelating agents - ANS-HEDP PBTC EDTA dark stains are often a result of - ANS-plant matter that fall into the bottom on the pool scale - ANS-a crusty white deposit scale results in: - ANS-rough pool wall surfaces reduced circulation flow calcification of filter media _______ scale is more likely to occur at locations where there is water evaporation or high temperatures. - ANS-calcium most common organic clarifiers are: - ANS-synthetic polyelectrolytes or polymeric coagulants most frequently used clarifiers are: - ANS-cationic clarifiers most common causes for cloudy water: - ANS-improper filtration insufficient water circulation poor water chemistry the most common inorganic water clarifier is: - ANS-aluminum sulfate (alum)
what contributes to the formation of foam? - ANS-quaternary algicides organic wastes suntan lotions body deodorants cosmetics foam generally occurs when the calcium hardness is ___ ppm or below - ANS- green algae are: - ANS-the most common and most easily controlled black algae are usually found; - ANS-growing on pool walls in area of poor circulation yellow algae often require treatment with: - ANS-specially formulated algicide what are the nutrients needed for algae to grow? - ANS-carbon hydrogen oxygen nitrogen phosphorous types of algicides - ANS-quaternary polymeric metallic ammonium sulfate sodium bromide sodium tetraborate
