NFPA 20 Fire Pump Certification Practice Exam

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• An assembled unit consisting of a fire pump, driver, controller, and accessories is called a...
• Dripproof Guarded Motor is a dripproof machine whose ventilating openings are guarded in accordance with the definition for dripproof motor.
• Which pump provides liquid flow and pressure dedicated to fire protection?
• The circuit conductors between the final overcurrent device protecting the circuit and the outlets are known as what?
• Which outcome best describes the risk when dead-heading occurs due to valve misalignment?
• What is the primary purpose of suction-water source protection?
• In acceptance testing, which option best describes how deviations are handled?
• What device is designed for the purpose of reducing, regulating, controlling, or restricting water pressure?
• Which practice supports maintaining system integrity under fire conditions as per NFPA 20?
• What are the primary factors considered in hydraulic design calculations for a fire pump?
• What term describes the monitoring of various conditions of a system from a location distant from the system through the use of electronic devices, meters, or equipment?
• If the discharge check valve were to fail closed, what is a likely consequence?
• What is the primary purpose of NFPA 20 in fire pump installations?
• What installation environment requirements apply to a diesel fire pump?
• Why is air venting on suction piping important?
• How should the pump head relate to system demand?
• Which pump is a positive displacement device that uses meshing gear teeth to move liquid?
• When portable fire pumps are connected to NFPA 20 systems, approval is typically provided by which authority?
• Which statement about automatic start initiation is true?
• Following a modification to a fire pump system, which items are typically updated and documented?
• Why is a discharge pressure gauge important in NFPA 20 testing and operation?
• What type of alarms are typically required for NFPA 20 fire pump systems?
• What is the benefit of proper close-to-pump discharge piping and gentle bends?
• In NFPA 20 practice, manual start is used for commissioning, testing, or when automatic starting is not available or desired.
• Which pump is described as a horizontal pump?
• Which of the following is a common automatic start condition for a fire pump?
• Which motor is described as totally enclosed and not equipped for cooling by external means?
• What is the purpose of a standby power supply?
• What is a fire pump room and why is it important?
• How should manual starting capability be addressed in NFPA 20 systems?
• The term for the circuit conductors running from the last protective device to the outlets is which of the following?
• Which term refers to the group of devices that govern starting and stopping of the fire pump driver and monitor the status of the pump unit?
• Where is a fire pump typically located to facilitate maintenance and operation?
• Which factor is included in hydraulic design calculations for a fire pump?
• In NFPA 20, what is the primary reason for keeping suction piping short and straight?
• What is the function of a flow meter during NFPA 20 acceptance testing?
• What term describes a motor classified by mechanical protection and cooling method?
• What considerations are required for the diesel engine fuel system in NFPA 20?
• How does improper suction length affect pump priming?
• What group of devices governs starting and stopping of the fire pump driver and monitors the status of the pump unit?
• What term describes an alternate power source normally inactive but becomes active whenever the primary power is lost?
• Why must controller testing be performed separately from pump operation?
• Which pump is commonly described as a horizontal pump?
• What should an NFPA 20 'as-built' drawing include for a fire pump installation?
• A pump in which the pressure is developed principally by the action of centrifugal force is called what?
• What are the basic differences between vertical turbine and end-suction fire pumps under NFPA 20?
• Which statement best describes alarms in NFPA 20 systems?
• Which entity approves the fire pump installation for use, ensuring compliance with design criteria and local codes?
• Why is a check valve used in the discharge of a fire pump?
• How should the NFPA 20-compliant exhaust system be installed for a diesel fire pump?
• Total suction head is defined as the gauge reading at suction converted to feet of liquid plus velocity head.
• For Vertical Turbine Pumps, the Total Head is defined as the distance from the pumping liquid level to the center of the discharge gauge plus the total discharge head.
• Maximum Pump Brake Horsepower is the maximum brake horsepower required to drive the pump at rated speed; determined by shop test under expected suction and discharge conditions; actual field conditions can vary.
• Which term describes the measure of the work increase imparted to the liquid by the pump, equal to the algebraic difference between the total discharge head and the total suction head?
• When might portable fire pumps be used with NFPA 20 systems?
• Dust-Ignition-Proof Motor is a totally enclosed motor whose enclosure excludes ignitable amounts of dust or dust that might affect performance and will not permit arcs, sparks, or heat inside to ignite exterior dust.
• What is a key maintenance attribute for the fire pump room?
• What action helps a diesel fire pump exhaust stay compliant with codes?
• Why should valve operations be exercised and verified during NFPA 20 testing?
• In what ways does NFPA 20 influence ongoing maintenance and inspection of pump systems?
• Which factor contributes to safe and compliant diesel pump operation?
• What documentation is required when a fire pump system is modified or repaired under NFPA 20?
• Which activities are routine maintenance tasks for fire pumps?
• What is the term for the condition of zero flow when the fire pump is running but the only water passing through the pump is a small flow discharged or used for cooling?
• Which motor is described as totally enclosed and furnished for exterior cooling by a fan integral with the motor?
• What maintenance documentation should NFPA 20 require for a fire pump?
• Which pump is intended to serve as the fire protection water supply in building piping systems?
• Which statement best describes the discharge pressure relief device?
• What maintenance documentation should be kept regarding the pump controller function?
• What is the function of a jockey pump in an NFPA 20 system?
• Dust-Ignition-Proof Motor describes a totally enclosed motor that excludes ignitable dust and prevents arcs, sparks, or heat from ignition of exterior accumulations.
• Which statement best describes what the commissioning package typically includes for a fire pump installation?
• Which term refers to a liquid such as foam concentrates and foaming agents that is intended to be injected into the water stream at or above water pressure?
• In fire pump systems, a tank that provides suction to a pump when its capacity is less than demand is known as what?
• Why are start/stop interlocks with building systems important?
• Which pump type is described by having an end suction configuration in some piping layouts?
• Which motor has ventilating openings that permit passage of external cooling air over and around the windings?
• Which arrangement helps ensure operation during electrical or mechanical fault conditions in a fire pump system?
• What is the term for a test designed to determine the amount of underground water available in a field and proper well spacing to avoid interference?
• Which term describes the total pressure available at the pump discharge flange?
• During NFPA 20 startup, which statement best describes interlock verification before starting?
• How does the fire department connection relate to NFPA 20 fire pump systems?
• What is the purpose of a pressure-relief device on the discharge line?
• During a running test, what must be verified about the pump's operation?
• Which statement best describes the purpose of testing a controller's alarm signaling?
• Why can actual field conditions affect Maximum Pump Brake Horsepower compared to shop conditions?
• Which pump type is described as having an end suction configuration?
• How is 'rated discharge pressure' used in NFPA 20 specifications?
• Why are properly positioned valves important when a fire pump starts?
• What type of testing is required for fire pump installations to verify piping integrity and absence of leaks at elevated pressure?
• What does 'rated head' or 'rated capacity' refer to on a pump?
• What is the typical starting method for a diesel engine fire pump in NFPA 20?
• What measures are required for diesel engine fuel to avoid contamination?
• A tank providing suction to a fire pump whose capacity is less than the fire protection demand is called what?
• In acceptance testing, the maximum power required to drive the pump at any flow up to 150 percent of rated capacity is called what?
• What is the purpose of an alarm initiating device in NFPA 20 fire pump systems?
• An internal combustion engine in which fuel is ignited entirely by compression of the air supplied for combustion is called what?
• Which pump type has the suction inlet located on the side opposite the stuffing box and with the nozzle facing perpendicular to the shaft?
• Which motor is enclosed to prevent the free exchange of air between the inside and outside of the case but not sufficiently enclosed to be airtight?
• What is the difference between static and dynamic testing in NFPA 20 acceptance testing?
• Can NFPA 20 systems use storage tanks or cisterns as water supply?
• What is the typical role of the automatic transfer switch in NFPA 20?
• What term describes a power source that is independent of the primary power supply?
• Which of the following is NOT a common drive type for NFPA 20 fire pumps?
• What is a jockey pump and its purpose?
• What information on a pump's mechanical drive is commonly listed on the nameplate?
• Why is adequate ventilation important in a fire pump room?
• During acceptance testing, which measurement confirms the pump meets its rated capacity?
• What is a suction accumulator or priming tank used for?
• NFPA 20 permits which type of drivers for fire pumps?
• The total suction head in feet (meters) of liquid absolute, determined at the suction nozzle, referred to datum, less the vapor pressure of the liquid, is called
• What kind of alarms should a fire pump controller provide?
• Why is vibration isolation important for fire pumps?
• Which actions are typically performed by the Authority Having Jurisdiction (AHJ) during NFPA 20 compliance?
• Which motor is designed to withstand an internal explosion of a specified gas or vapor and prevent ignition of the surrounding gas?
• What is the purpose of a lockout device on a fire pump controller?
• Which battery provides sufficient electrical energy to crank the engine and power the system controls?
• Which motor is totally enclosed and not equipped for cooling by means external to the enclosing parts?
• What is the purpose of an acceptance test for a fire pump?
• What is dead-heading and how do properly positioned valves help prevent it?
• The condition where water flows from an atmospheric vented source to the pump without the inlet pressure dropping below atmospheric while at 150 percent capacity is known as
• What is the purpose of a low-suction-pressure switch?
• Which of the following is a risk specifically associated with improper suction piping design?
• What is the purpose of a priming mechanism on a centrifugal fire pump?
• Which of the following is not a typical protective feature on NFPA 20 controllers?
• Which statement correctly describes Total Head in suction-lift tests?
• What is the primary reason for performing tests during NFPA 20 commissioning?
• What is a potential consequence of not updating hydraulic calculations after modifying a fire pump system?
• How does NFPA 20 treat backflow and cross-connections in fire pump systems?
• What is the role of a fire pump controller?
• What is the term for a vertical shaft turbine-type pump enclosed in a suction can used to raise water pressure in a pipeline?
• If suction prime is lost due to piping issues, what is a common consequence?
• How are pressure-reducing devices treated in NFPA 20 discharge systems?
• In certain high-pressure configurations, a discharge relief device is used primarily to protect piping and equipment from overpressure.
• Which role does a jockey pump play in a fire pump system?
• The total head developed at rated capacity and rated speed for a centrifugal pump is called.
• Which term describes the total pressure at the discharge side of a pump?
• What is typically included in an acceptance test report for a fire pump installation?
• Why is a handover to maintenance important after installation?
• Which motor is defined as having a protective enclosure to limit direct access to live metal or rotating parts?
• Which detail is essential to include in 'as-built' drawings to support safe operation and maintenance?
• How are testing intervals and records typically handled in NFPA 20?
• What suction-water source considerations does NFPA 20 require?
• How does NFPA 20 address coordination with other fire protection systems?
• Which pump is defined as a positive displacement pump characterized by gear teeth and a casing to displace liquid?
• What is the role of the fire pump controller in NFPA 20 systems?
• Which component prevents reverse flow in a discharge line?
• For vertical shaft turbine-type pumps, the distance to the liquid level is measured vertically from the horizontal centerline of the discharge head or tee.
• Which pump is named for its gear teeth that displace liquid?
• What is the term for a vertical shaft turbine-type pump in a can (suction vessel) installed in a pipeline to raise water pressure?
• The practice of monitoring a system from a distant location using electronic meters and equipment is known as what?
• Pumping Liquid Level is defined as the level of the liquid body from which the pump takes suction when the pump is operating.
• Suction head exists where the total suction head is above atmospheric pressure.
• Which items should be included in emergency procedures for fire pump operation?
• The device, or group of devices, that can disconnect the conductors of a circuit from their source is called what?
• If a storage tank is used as water supply, what design requirements must it meet?
• What protective features are commonly included in NFPA 20 fire pump controllers?
• The reading of a pressure gauge at the discharge of the pump, converted to feet (meters) of liquid, and referred to datum, plus the velocity head at the point of gauge attachment, is called
• In NFPA 20 practice, which term refers to the general category of a motor defined by mechanical protection and cooling methods?
• In suction-lift tests, Total Head is calculated as the sum of the total discharge head and the total suction lift.
• What is a likely consequence if the pump head is not sufficient to meet system demand?
• Which pump is a positive displacement pump characterized by the use of gear teeth and a casing to displace liquid?
• What is meant by the design pressure for a protected system?
• An assembled unit consisting of a fire pump, driver, controller, and accessories is called a Fire Pump Unit.
• What is the purpose of an acceptance test for a fire pump under NFPA 20?
• What kind of interlocks are commonly used in NFPA 20 fire pump systems?
• Drawdown is defined as the vertical difference between which two water levels?
• Which action is not a typical part of routine maintenance for fire pumps?
• What does an acceptance test verify regarding pump head and flow?
• Annual testing for NFPA 20 fire pumps is intended to verify readiness and performance in accordance with which standard?
• Why is ensuring proper valve alignment crucial in a pump system?
• Which motor is designed to prevent ignition of the surrounding gas by sparks or explosions within the motor casing?
• What term describes an on-site normal supply of electric power that is expected to be constantly producing power?
• Static Liquid Level is defined as the level of the body of liquid from which the pump takes suction when the pump is not operating; for vertical shaft turbine-type pumps, the distance to the liquid level is measured from the horizontal centerline of the discharge head or tee.
• What information is typically found on a fire pump nameplate?
• Who approves NFPA 20 installations for code compliance?
• How does NFPA 20 address cold-weather operation for fire pump systems?
• For vertical turbine pumps, Total Head (H) is defined as the distance from the pumping liquid level to the center of the discharge gauge plus the total discharge head.
• Which pump is a dedicated source to provide liquid flow and pressure for fire protection?
• Why is a priming device sometimes required in fire pump systems?
• When is an automatic transfer switch typically required in NFPA 20 fire pump installations?
• Which term describes an alternate supply of electric power produced on site, not constantly producing power?
• Why is Net Positive Suction Head (NPSH) important in NFPA 20 fire pump design?
• Why must suction piping be free of air leaks and air pockets?
• What is the supervisory signal indicating an abnormal condition requiring immediate attention?
• Which pump is used to inject additives into the water stream?
• In sizing NFPA 20 fire pumps, what does the term system demand describe?
• Which item serves as formal confirmation that commissioning activities have been completed and approved by the responsible authority?
• Which pump is used to inject additives into the water stream?
• How should discharge piping be arranged to minimize vibration?
• What is the function of suction and discharge isolation valves?
• What is the term for the total pressure available at the pump suction flange?
• Why is priming water important in a centrifugal fire pump per NFPA 20?
• Which testing measure specifically confirms that the pump can deliver required pressure while maintaining flow through the system?
• How does NFPA 20 address backflow prevention?
• What kind of clearance is required around a NFPA 20 fire pump?
• Which term describes the net pressure (differential pressure) at rated flow and rated speed as marked on the nameplate?
• What is a common cause of a fire pump failing to start, and how is it mitigated?
• Which pump provides liquid flow and pressure dedicated to fire protection systems?
• What environmental considerations are mandated for a diesel fire pump room?
• What is the purpose of start/stop interlocks with building systems?
• Which element protects the public water supply from contamination in a fire pump system?
• Which term describes a test that provides information about the transmissibility and storage coefficient (available volume of water) of an aquifer?
• Which term describes the performance of inspections and tests at a distance from the system or component using electronic devices?
• Which statement best describes the integration requirements for NFPA 20?
• Total suction head is defined as the gauge reading at suction converted to feet of liquid plus velocity head.
• How should alarms be delivered to designated personnel?
• What is the purpose of a surge/relief valve in a fire pump discharge line?
• What foundation and vibration control considerations does NFPA 20 require for large fire pumps?
• Which materials are cited as corrosion-resistant materials, such as brass, copper, Monel, or stainless steel?
• What considerations are involved with the diesel engine fuel supply for NFPA 20 pumps?
• Which elements must NFPA 20 address for cooling a diesel engine fire pump?
• What is hydraulic head in relation to pump performance?
• Which of the following is a key consideration for suction piping in NFPA 20?
• Which component is responsible for starting and stopping the fire pump and monitoring status and alarms?
• What is the consequence of not exercising valve operations during testing?
• Which pump is described as having a horizontal shaft orientation?
• Which materials are listed as corrosion-resistant materials such as brass, copper, Monel, or stainless steel?
• What role do locks and tags play in NFPA 20 shutdown procedures?
• What is the function of a discharge pressure relief device in an NFPA 20 system?
• Which statement describes the effect of inadequate ventilation in a fire pump room?
• Loss of Phase is defined as the loss of one or more but not all phases of the polyphase power source.
• Which pump is described as having its suction nozzle on the opposite side of the casing from the stuffing box, with the suction nozzle facing perpendicular to the shaft axis?
• Dripproof Motor is an open motor in which the ventilating openings are so constructed that successful operation is not interfered with when drops of liquid or solid.
• Which centrifugal pump configuration is NOT permitted for fire pumps?
• What is the most important factor for ensuring reliable priming related to suction path in a pump system?
• Which documents are typically required for testing and commissioning of a fire pump installation?
• What is the purpose of a discharge pressure gauge?
• Which pump type develops pressure primarily by centrifugal force?
• How does NFPA 20 address redundancy in fire pump systems?
• Which motor is an open type where openings giving direct access to live metal or rotating parts are limited in size to prevent accidental contact?
• How often should NFPA 20 require maintenance or exercise of the fire pump?
• Which device is designed to automatically lower system pressure to a desired level?
• Which describes the priming process in the suction line?
• Which motor is totally enclosed and equipped for exterior cooling by means of a fan integral with the motor but external to the enclosing parts?
• What term describes any engine in which the working medium is the products of combustion of the air and fuel supplied?
• What is the purpose of a discharge check valve in a fire pump system?
• High-Rise Building is defined as?
• What is the main purpose of NFPA 20?