Pool Operator Certification Exam with complete solutions

Class A pool - ANSWER--any pool intended for use by accredited competitive aquatic events -can be used for recreational purposes Class B pool - ANSWER-any pool intended for public recreational use Class C pool - ANSWER--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 - ANSWER-any pool operated for special purposes such as vortex pools, sand bottom pools, splash pools, float tanks and interactive water attractions Class E pool - ANSWER-any pool used for physical therapy and operated above 86 degrees F Class F pool - ANSWER-any pool used for wading purposes primary concern of the health inspector is: - ANSWER-the health and safety of the community of pool users enforcement begins with: - ANSWER--the approval of the original construction design -regular on sit inspections of the facility operation manager's primary responsibility is: - ANSWER-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 - ANSWER-planning organizing leading controlling key functions of leading - ANSWER-decision making motivating communicating hiring staff development key functions of controlling - ANSWER-standards measuring evaluating correction SMART - ANSWER-specific measurable achievable relevant time-based negligence - ANSWER--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 - ANSWER--a measure used to establish a standard against which actual conduct is judged duty of care - ANSWER-the amount of reasonable care owed to individuals using the aquatic facility who should become a certified pool operator? - ANSWER--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 - ANSWER--strongest signal word -user must be extremely careful handling product warning - ANSWER--less strong than danger -means that the user could become very ill or badly injured by exposure caution - ANSWER--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: - ANSWER-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: - ANSWER-encourage emergency planning efforts at the state and local level, regarding the release or spill of hazardous or toxic chemicals SARA Title III includes: - ANSWER-aluminum sulfate ammonia calcium hypochlorite chlorine gas hydrogen peroxide muriatic acid sodium bisulfate sodium hypochlorite OSHA has estimated that more than ____ million workers are exposed to 650,000 hazardous chemical products in more than ___ million American workplaces - ANSWER-32; 3 the basic goal of Hazard Communication Program is: - ANSWER-to ensure that employers and workers know about work hazards and how to protect themselves Recreational Water Illnesses - ANSWER-spread by swallowing, breathing or having contact with contaminated water from swimming pools, spas, hot tubs, etc. symptoms of RWI's - ANSWER--gastrointestinal, skin, ear, respiratory, eye, neurologic and wound infections -most common: diarrhea what inactivates crypto? - ANSWER-UV, ozone and chlorine dioxide inactivate giardia can be destroyed within ___ min at 1ppm of free chlorine at pH of ____ or less - ANSWER-45; 7.5 shigella is present in - ANSWER-the diarrheal stools of infected persons shigellosis usually lasts __-__ days - ANSWER-5-7 protozoa - ANSWER-cryptosporidium giardia bacteria - ANSWER-shigella E. coli viruses - ANSWER-norovirus adenovirus hepatitis a what is the response for formed stool? - ANSWER-1. raise the free available chlorine level to 2 ppm and ensure the pH is 7.5 or less at 77 deg. or higher 2. maintain the chlorine concentration for at least 25 min before opening the pool 3. ensure the filtration system is operating while the pool reaches and maintains the proper free chlorine concentration what is the response for diarrheal discharge? - ANSWER-1. raise the free available chlorine level to 20 ppm 2. maintain the pH of 7.5 or less at 77 deg. or higher 3. maintain the pH and chlorine level for 12.75 hours 4. backwash the filter after full disinfection time 5. return the chlorine level to normal levels Contamination Time (CT) value - ANSWER--the concentration of free chlorine in ppm times time in min what is the CT value for giardia? - ANSWER-45 what is the CT value for crypto - ANSWER-15,300 hypochlorous acid (HCl) - ANSWER--inactivates pathogens and alage -oxidizes -the active killing form of chlorine in water free chlorine - ANSWER-the active available disinfectant in the water FC= HoCl + OCl- combined chlorine - ANSWER-forms when free chlorine reacts with 2 types of contaminants in the water pathogens - ANSWER-bacteria, fungi, viruses and protozoan parasites available chlorine content (acc) - ANSWER--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 - ANSWER-the percentage by weight of the technical grade active ingredient in the product how does sodium hypochlorite raise the water's Total Dissolved Solids? - ANSWER-by adding sodium (Na+) and chloride (Cl-) ions to the water sodium hypochlorite (NaOCl) - ANSWER--liquid chlorine releasing disinfectant that is the most common disinfectant used -active strength: 10-12% -ACC 10-12% -pH 9-14 calcium hypochlorite is used to - ANSWER-superchlorinate the water calcium hypochlorite - ANSWER--dry form of chlorine -class 3 oxidizer -continuous use may result in high calcium levels -pH 8.5-11 lithium hypochlorite (LiOCl) - ANSWER--dry, granular compound of chlorine -rapidly and completely soluble -use for superchlorination -class 1 oxidezer chlorine generation - ANSWER-in line generation brine method chlorine gas - ANSWER--effective disinfectant -active strength 100% -ACC 100% -pH 0 cyanuric acid (CyA) - ANSWER--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 - ANSWER-an increased risk of algae the most common method of reducing CyA concentration is - ANSWER-to partially drain and replace water with fresh potable water unstabilized disinfectants are - ANSWER-sodium hypochlorite calcium hypochlorite lithium hypochlorite chlorine gas unstabilized disinfectants - ANSWER--aka inorganic disinfectants -sensitive to UV radiation and sunlight -easily automated and controlled by an oxidation reduction potential stabilized disinfectants - ANSWER--contain cyanuric acid as part of their molecular structure trichlor - ANSWER--dry compound -class 1 oxidizer -low solubility -lowers the total alkalinity and pH over time -stabilizes -releases cyanuric acid into the water dichlor - ANSWER--anhydrous -dichlor dihydrate -a salt, very soluble -used to superchlorinate pool and raise stabilizer level anhydrous dichlor - ANSWER--no water is bound to molecule -class 3 oxidizer dichlor dihydrate - ANSWER-class 1 oxidizer bromine - ANSWER--disinfectant -oxidizer -reddish brown liquid hypobromous acid (HOBr) - ANSWER--weak acid -destroyed by sunlight bromine tablets (BCDMH) - ANSWER--when dissolved in water, HOBr acid and HOCl acid are released ozone (O3) - ANSWER--supplemental oxidizer and disinfectant -cannot be transported and must be generated on site -venturi injection is the most common way to dissolve ozone into water ultraviolet light - ANSWER--supplemental oxidizer and disinfectant -does not cre