Fresenius Water System Practice Exam

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• What does a radical change in the percent rejection rate of an RO machine signal?
• What can excessive delta pressure indicate?
• What type of water quality issue is suggested by recurring muscle weakness among patients?
• What is the first piece of equipment that water goes through?
• What does backwashing refer to in a water treatment context?
• What is bicarbonate categorized as in the context of bodily functions?
• What is the particle size that the RO pre-filter protects the RO machine from?
• Which element is NOT commonly associated with anemia and hemolysis in dialysis patients?
• What is the primary goal of an action level in a water treatment context?
• Which type of chlorine is known as unbound?
• What material is commonly used for piping within water treatment systems?
• When should routine culture testing be performed?
• What health issue can aluminum and fluoride exposure cause?
• Which of the following is essential when documenting chlorine testing results?
• How often should the TDS meter be standardized using the S setting?
• Which devices are used to remove particles from water by passing fluid through pores?
• What is the primary function of sodium bisulfate in water treatment?
• Which of the following components is critical for monitoring RO system performance?
• What is sepsis?
• What tools are used to test for residual chlorine after disinfection?
• What does an alternative water supply plan ensure in a medical facility?
• What is the purpose of the total chlorine testing algorithm?
• The size of the RO prefilter is routinely measured in what micron range?
• A Phoenix meter is calibrated when it shows more than how much deviation from the standard?
• Which factor mainly affects the performance of RO systems?
• What type of pump is used to maintain water pressure during usage?
• What is the risk of not disinfecting water treatment components after repairs?
• Which of the following elements is essential for maintaining safe water quality?
• Total chlorine is defined as the sum of which two components?
• Which method is used to test water for levels of calcium and magnesium?
• When is backflow prevention particularly critical in a water supply system?
• What is one of the main benefits of keeping a minimum EBCT in carbon treatment systems?
• Which process removes calcium and magnesium by the softener?
• How is total volume defined in the context of water treatment?
• What type of pumps are used under the holding tank to move water out to the stations?
• For how long should the RPC strip be immersed in the sample?
• What is the frequency of routine total chlorine testing according to FMS policy?
• How many qualified staff members must perform and document total chlorine testing?
• What device diverts the product water to the drain if the TDS alarm limit is exceeded on the RO?
• What investigation should be considered if a cluster of patients exhibit muscle weakness?
• What is the primary setting for a Hach colorimeter used in water testing?
• What should be monitored to maintain water quality in dialysis?
• What is the recommended ideal temperature for RO operation?
• What does total chlorine in water refer to?
• How does a decrease in temperature affect the RO membrane's efficiency?
• What instrument is primarily used to test for total chlorine in water treatment?
• What is the main role of the multimedia filter function?
• What level of residual chlorine indicates successful disinfection?
• RO pre-filters should be changed after how long?
• What is the hard water limit after the softener has operated?
• What type of information does the HMIS labeling system provide?
• Chloramine is a combination of which two elements?
• Where are the ultrafilters located within the water treatment system?
• What is the definition of feed water in water treatment systems?
• Which of the following is a symptom of a pyrogenic reaction?
• What is an indirect feed in water system design?
• What method of water treatment is used during RO failure and is part of the alternate water supply plan?
• Which material is primarily used in the construction of backflow prevention devices?
• What type of equipment is located in the distribution loop after the holding tank to remove bacteria and endotoxins?
• A sample container is rinsed how many times before a sample is collected?
• What is the primary function of an ultrafilter?
• What is a common indicator that the RO pre-filter needs to be changed?
• What does conductivity measure in a fluid?
• What issue can arise if bicarbonate levels are not properly managed in the body?
• When is it necessary to replace RO membranes?
• What is the first step to take if a chlorine breakthrough occurs post GAC filter 1?
• What is the function of reject water in a dialysis system?
• What is the safe level of total chlorine in the water system?
• What is the primary content of a carbon tank?
• What serious side effect can occur if chlorine crosses the dialyzer membrane?
• Which of the following allows bacteria to survive against disinfection methods?
• What does the term "product water" refer to in reverse osmosis systems?
• Monthly disinfection of holding tanks and water distribution loops is aimed at controlling which of the following?
• Which process does the deionizer facilitate in water treatment systems?
• How long must the RO machine operate continuously before conducting chlorine testing?
• How does reverse osmosis work?
• When should routine total chlorine testing be conducted?
• What is a hydrometer used for in water treatment?
• When can a pyrogenic reaction occur?
• What does the carbon (GAC) filter effectively remove from water?
• What is the primary function of a city water booster pump?
• What is necessary for confirming the effectiveness of total chlorine removal in water treatment?
• What does the term "combined chlorine" refer to?
• How often should a TDS meter be standardized?
• What are three symptoms of hemolysis?
• What is the primary use of a water softener?
• What is the purpose of monitoring total chlorine levels in water?
• FMS follows water quality standards established by which organization?
• Chloramine adsorption is influenced by which of the following factors?
• What is the safe range for total chlorine levels in water?
• What is the purpose of residual chlorine strips?
• What is the primary reason for high chlorination of the water supply?
• What optimization process is critical for maintaining TDS meter accuracy?
• What does a breakthrough indicate in water quality testing?
• What does fill volume refer to in a water treatment process?
• Which type of pump is responsible for circulating water back to the holding tank?
• Why are chlorine and chloramines administered to city water systems?
• How does adsorption work in water treatment systems?
• What is the effective wavelength of UV lights in nanometers?
• Phoenix meters must be verified how often with standard solutions?
• What is the purpose of a chemical feed system in RO systems?
• What does EBCT stand for in water treatment processes?
• What significance does the temperature of water have during the entry into the facility system?
• What is used to measure the performance of reverse osmosis (RO) systems?
• What is a common metric for assessing treatment efficiency in reverse osmosis?
• What is a common feature of both bacteria and viruses?
• What is the acceptable water hardness post softener?
• What is a patient complication that may result from exposure to chlorine or chloramines during dialysis?
• Which component is primarily responsible for preventing backflow into the city water supply?
• What is defined as water that has been forced through an RO membrane?
• In gravity feed solution delivery systems, what function do head tanks serve?
• Machine conductivity readings may vary how much from theoretical conductivity?
• What does the term "ion exchange" primarily refer to in water treatment?
• What is endotoxin?
• What does delta pressure reflect in a water system?
• What does the total chlorine testing algorithm guide staff on?
• According to FMS policy, what is the minimum EBCT time required?
• What is the function of the backflow preventer?
• What is temporary labeling used for in the context of mix tanks?
• At what temperature is the over temperature alarm set?
• In what scenario would you most likely replace the RO membranes?
• What type of filter is commonly known as a multimedia sediment filter?
• Which device is used to measure total dissolved solids in the water?
• What does CFU stand for in the context of water quality testing?
• Why is GAC testing increased to hourly intervals?
• What is the correct amount of water to collect for total chlorine testing using RPC ultra low chlorine test strips?
• After a repair in a water treatment system, which components must be disinfected by the technical staff?
• Which component is essential for the proper functioning of the water softening process?
• Which of the following is true about granulated activated carbon filters (GAC)?
• What is the minimum duration for which an RO system must run before testing?
• Which characteristic is true about gram-positive bacteria when stained?
• How often should loop pumps that move water from the holding tank to the distribution loop be run?
• What is Granuflo?
• What is the primary outcome of using chloramines in water treatment?
• Why is it essential to regularly test for endotoxins in water systems?
• What is the purpose of the solution delivery system (SDS) in dialysis machines?
• What is the function of the temperature blending valve in the SDS?
• What is the primary design concern for a water system in a facility without a holding tank?
• What substance does a water softener aim to remove from the water supply?
• What unit of measure is indicated by colony forming units?
• What does UV light do in water treatment?
• What is the primary purpose of testing for residual chlorine?
• What follows after the UV light treatment in a water treatment process?
• What is the FMS action level for bacteria in water within the tank, piping, and distribution loop?
• What does HMIS stand for in relation to hazardous materials?
• What does the action level indicate in a water treatment system?
• What type of water is described as tap water before treatment?
• What action is taken if total chlorine testing after the 2nd carbon tank shows results above the action limit?
• What is the primary purpose of microns in water filtration?
• A sodium bisulfate injection system must be classified as what type of system?
• How often should the Phoenix meter be verified?
• What is the valve panel in a water treatment system?
• What is the standard for acceptable turbidity in potable water?
• AAMI recommends a minimum of how many minutes for EBCT?
• What is the FMS action level for endotoxin in product water exiting the RO system?
• How frequently should a TDS meter be calibrated?
• A full calibration of the TDS meter is required how frequently?
• Phoenix meter readings may vary how much from theoretical conductivity?
• What is the required duration that reverse osmosis (RO) must run before water samples are taken for testing?
• What is the action limit for endotoxin levels in water?
• What is the role of a sediment filter cartridge in a water filtration system?
• What is the chemical name of free chlorine commonly referred to?
• What is the primary function of a booster pump in water systems?
• What does microbial testing in water determine?
• Which of the following is a measurement unit for endotoxin levels?
• Which type of chlorine is considered bound?
• What component ensures water quality by diverting excess TDS to waste?
• What is the role of a brine tank in water treatment?
• How often should routine disinfections of holding tanks and water distribution loops be conducted?
• In a water treatment context, what is the main purpose of applying pressure to a membrane?
• What causes a pyrogenic reaction in patients?
• Which two elements could predominantly contribute to adverse health effects in dialysis water?
• What should be monitored to avoid pyrogenic reactions in patients?
• What is the purpose of a bicarbonate mixer?
• Effective disinfection in water systems is typically confirmed by monitoring levels of?
• How many hardness tests are normally conducted daily post softener?
• What is the primary method used to remove total chlorine in water treatment systems?
• Which component can be damaged by the presence of precipitate in water systems?
• What must the Hach meter be verified with daily?
• What might result from a total chlorine level greater than safe levels after the first carbon tank?
• What is the primary function of a sediment filter?
• What function does the acid feed injection pump primarily serve in water systems?
• What is the ideal pH level of the water entering the water treatment system?
• What is one of the initial steps in ensuring water quality in a facility?
• What type of water quality measurement must be monitored to ensure effective chloramine removal?
• If the RO feed water is warmer, what effect does it have on product water quality?
• What does a chemical feed pump do to the water?
• Which of the following is NOT a symptom of a pyrogenic reaction?
• What is the composition of chloramines?
• What does EBCT stand for in the context of water treatment?
• What is indicated if the water hardness exceeds the recommended level after the softener?
• What is a deionization tank primarily used for?
• Which device is utilized to confirm the conductivity of dialysate?
• What is the action limit for bacteria in water?
• Which substance is commonly associated with hemolysis in dialysis?
• Hardness strips are used to test for the removal of which minerals?
• The function of a multimedia filter is specifically to remove particles of what size?
• What is the purpose of the spec check color standard kit?
• Which contaminant is classified as a pesticide?
• From which port is the first total chlorine sample taken?
• What do the initials IFU stand for in water system operations?
• What is the function of a captive air (expansion/bladder) tank?
• How many times should the TDS settings on the RO be set compared to the normal product TDS?
• In a reverse osmosis system, what is the recommended temperature limit to avoid damage to membranes?
• Which parameter should not exceed 10 psi for the softener?
• Which parameter is NOT typically tested with RPC strips?
• What is the primary objective in disinfecting the components of a water treatment system after repairs?
• What is the ideal temperature for water entering the facility water system?
• Which step should follow the initial chlorine breakthrough measurement?
• What is the maximum total chlorine level that is considered patient safe?
• What is the term for the water that exits the RO system?
• What is the calibration threshold for phoenix meters regarding standard solutions?
• According to AAMI standards, what is the minimum required EBCT in a carbon tank?
• What is the role of a captive air tank, also known as an expansion or bladder tank?
• Which system component typically follows UV light treatment?
• What is documented using the TCL-1 log?
• Which components are included in the composition of the SDS?
• What is the action level for endotoxin in water within the tank, piping, and distribution loop?
• RPC test strips are used to test for which of the following?
• What device is installed to prevent water from flowing backward into the incoming supply?
• What size of particles are targeted for removal by the multimedia tank?
• Where does the pathway of water start in a facility?
• What is the 'initial volume' in a water treatment system?
• The TDS alarm setting on the RO system should be set at how many times the normal product TDS?
• Regular monitoring of the RO system is essential to ensure the efficiency of what aspect?
• Which of these is an example of an inorganic contaminant?
• What type of filter removes particles as small as 10 microns?
• How often should routine testing for bacteria and endotoxin take place?
• What three things does a Phoenix meter measure?
• What type of particles do granular activated carbon filters primarily absorb?
• What is the main use of distribution loops in the SDS?
• At what temperature are over temp alarms set?
• What is indicated by a percent rejection rate in a reverse osmosis system?
• What is the FMS action level for bacteria in product water exiting the RO system?
• What process does a water softener use?
• In reverse osmosis systems, what is the consequence of having a high percentage of reject water?
• What is the acceptable delta pressure for the softener?
• How can the SDS be fed to dialysis machines?
• Which of the following systems is rarely used as a primary treatment method?
• What is the primary purpose of loop pumps?
• What aspect of water quality is CFU primarily associated with?
• What type of testing is essential after conducting maintenance on a reverse osmosis system?
• The sodium bisulfate injection system is used to control which aspect of water quality?
• Which two health issues may be caused by the presence of aluminum, chloramines, copper, or zinc in dialysis water?
• Which alarm should always be set to alert staff about the potential risk of running out of water?
• The over temperature alarm is designed to prevent damage to which component?
• What is the role of bicarbonate concentrate in the mixing process?
• Which process is crucial for ensuring the safety of dialysis water post-maintenance?
• What is the purpose of the over temperature alarm function in water systems?
• What does the TCL-2 log monitor?
• Which of the following is an organic contaminant?
• The low-level alarm on the holding tank must be set to operate in what manner?
• What is the significance of monitoring the specific gravity after mixing?
• What is the maximum delta pressure across a softener?
• UV light is classified as which type of radiation?
• If the RO rejection rate reaches what percentage, the membranes must be replaced?
• How does an ultrafilter contribute to water treatment systems?
• What action is taken if the feed water pH is above 8.0?
• What does the water softener primarily remove from water?
• What purpose do membrane filters serve in water treatment?
• What is the process of attracting and holding particles to a surface called?
• Which testing method is regarded as a backup for measuring total chlorine?
• How do chlorine and chloramines impact water systems?
• What should be done after measuring chlorine levels post GAC filter 1?
• When should the RO prefilter be changed according to delta pressure?
• What does the product divert valve do when the TDS alarm limit is reached?
• What is the role of filter devices in a water treatment system?
• Which organization develops voluntary standards for dialysis?
• Water hardness testing is still performed once per week if a facility does not have a softener. What is the frequency of this testing?
• What type of acid does the acid feed injection pump use?
• What does the ion exchange process result in during water treatment?
• What process do carbon filters use to remove chlorine and chloramine?
• What is the frequency of routine RO disinfection?
• What term describes solid particles that can settle out of a solution in water systems?
• What is the primary purpose of a reverse osmosis (RO) membrane in water treatment?