Sprinkler Contractors Practice Exam

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• CPVC pipe and fittings may be suitable for use in areas where ambient temperatures are above freezing and do not exceed _____________.
• What is the function of a pressure-reducing valve in a sprinkler system?
• What is the flow pressure required for most fire sprinklers to function effectively?
• K factors for standard coverage sprinklers range from ___________.
• How should sprinkler spacing be determined in relation to walls?
• Which type of routine maintenance can a sprinkler contractor perform?
• What is one common cause of sprinkler system failure?
• How is compliance of a fire sprinkler system with applicable codes verified?
• A simple method of obtaining necessary information from the general contractor, architect, or owner required to build a project is _____________.
• What is the primary function of air maintenance devices in sprinkler systems?
• Standpipes are considered either:
• A sprinter with an orange-colored glass bulb has a temperature classification of.
• In a wet pipe sprinkler system, what is always present in the pipes?
• Investigations are only necessary when death occurs. True or False?
• The primary purpose of a fire department connection (FDC) is to:
• When testing a system, if using a dry system, what result are you expecting?
• What is the purpose of sprinkler spacing guidelines?
• How does a dry pipe system differ from a wet pipe system?
• What is the temperature rating for quick response sprinkler heads?
• What can improper sprinkler head alignment lead to?
• What action should NOT be taken to prevent damage to dry pipe components?
• Emergency response plans should be developed ____________________.
• Approved backflow protection assemblies are generally not required for AWWA fire system classes:
• How often should inspections be conducted on fire sprinkler systems?
• What type of calculations are performed to evaluate the hydraulic demands on a sprinkler system?
• Incidents are events that result in ____________.
• When performing repairs on preaction and deluge systems, what should you consult regarding supervisory air pressure?
• To convert feet of head to psi, you multiply by:
• Which method is typically used to assess the condition of a fire suppression system?
• According to NFPA 13, one of the leading reasons for unsatisfactory sprinkler performance is _______________.
• When a misaligned foam-water discharge device is discovered during inspection, what is the proper course of action?
• What temperature range is suitable for CPVC pipe and fittings?
• Which NFPA standard outlines the installation of fire sprinkler systems?
• Which type of sprinkler bulb indicates an ordinary temperature classification?
• When describing the details of the installed system to the owner, a good place to start is _____________.
• What is an underground fire protection system?
• Which two categories represent the main types of fire sprinkler systems?
• Trenches have a maximum allowable slope of 1/5 horizontal to 1 vertical in ___________________.
• Check valves should be inspected every ________________.
• What is the function of a trapeze hanger in a sprinkler system?
• How can obstruction in a sprinkler's spray pattern affect performance?
• What occurs next in the normal sequence of operation of an electric release mechanism after the solenoid valve opens?
• Why are pressure tests crucial for sprinkler systems?
• In a drawing package, information on how pipe lengths are dimensioned is found in the _____________.
• A measure of the available line pressure prior to flowing the hydrant is __________
• According to NFPA 20, a pump must deliver ____________ percent of its rated volume at 65 percent of its pressure rating.
• Why are sprinkler heads located at different heights in a system?
• Air maintenance devices are used to limit air or gas that will not affect system response time. True or false?
• In any trench over 4 feet deep, how often must ladders be placed?
• Which aspect is critical in ensuring that the sprinkler system performs effectively?
• What is a common requirement for fire sprinkler water supply?
• Given a sprinkler protection area of 130 square feet and a density of 0.25 gpm per square foot, what is the minimum sprinkler discharge?
• How do fire department connections (FDC) work in conjunction with sprinkler systems?
• When performing branch line hydraulic calculations, how is the fitting loss for straight-through flow in a tee or cross treated?
• In dry pipe valves, the term differential refers to the ratio of what?
• What do hydraulic calculations compare the required demand of a sprinkler system to?
• What is the consequence of not calibrating a pitot-gauge as recommended?
• In what condition might galvanized steel be deemed unsuitable for sprinkler systems?
• Fire pumps are selected based on ________________________.
• Do dry systems have a higher C-factor than all other types?
• A hanger supporting 3250 pounds before fail is rated at ________________.
• The maximum flow capability for Class I and Class III standpipes for unsprinklered buildings is _____________ gpm.
• What should be done if a sprinkler head is found to be leaking during inspection?
• The pressure for supervisory air in preaction and deluge systems may vary from ______________.
• How can temperature fluctuations affect sprinkler systems?
• What purpose does the sprinkler system riser serve?
• What is the key distinction between a fire suppression system and a fire sprinkler system?
• What is the purpose of an excess flow valve?
• What is the purpose of a 'make-on list' in sprinkler system documentation?
• Obstructed construction includes ____________ construction.
• What is a crucial factor in designing an effective sprinkler system?
• What factors can influence the design of a sprinkler system?
• The type of controller designed to reduce hydro-mechanical stress in the sprinkler system is a ___________ controller.
• Pitot-gauges should be calibrated by a testing laboratory ____________.
• What is a key difference between residential and commercial fire sprinkler systems?
• Fabrication is performed from a material take-off list.
• What is the required clearance between water spray equipment and live uninsulated electrical components when the nominal system voltage is 69,000 volts?
• If a pendent or upright sprinkler is discharging 15 gpm at a point 4 feet below the sprinkler, the discharge pattern will measure ________ feet in diameter.
• The test that measures the sprinkler supply capability at a particular time and season is a _________________________.
• Under normal conditions in a double-interlocked water control valve, the water pressure under the clapper and in the differential chamber are ___________________.
• The fitting loss for a straight-through flow in a tee or cross during branch line calculations is treated how?
• Pressure losses between strainer and no-strainer meters are:
• What is the typical diameter measurement for a discharge pattern at 15 gpm from a sprinkler?
• A machine shop is a typical example of a(n).
• When the foreman is required to receive material on the job site, he or she should.
• What legal requirement must a sprinkler contractor typically fulfill?
• The nitrogen-driven pressure tank for NFPA 13D residential use is primarily designed for applications requiring a ___________ minute duration.
• What is the recommended inspection frequency for check valves?
• Almost all brazing applications use a(n).
• Which type of sprinkler is best designed for high ceilings?
• What is one of the main purposes of conducting flow tests on sprinkler systems?
• What is a consequence of improper installation of a sprinkler system?
• Baffles are required when standard sprinkler spacing is less than ________.
• What term describes the point where water is available for discharge in a sprinkler system?
• Which component is essential in the design of a fire sprinkler system for controlling water delivery?
• Which of the following types of shoring is best used near existing structures?
• The pipe supplying the standpipe system is sized by which method?
• NFPA 13 states that meters are prohibited from use on sprinkler systems.
• What does an inspector focus on during a visual inspection of a sprinkler system?
• What type of valve is typically used to control the water supply to a sprinkler system?
• Why is pipe diameter important in fire sprinkler system design?
• What is essential to check during routine maintenance of a sprinkler system?
• An example of community infrastructure is _______________.
• When conducting a flow test, the pressure gauge reading is determined by ____________.
• When performing branch line hydraulic calculations for the main piping, pressure due to elevation is added at a single point when:
• In NFPA 13D, what is the maximum number of sprinklers that will typically be calculated?
• What can cause obstructions in a sprinkler system?
• What are the two basic requirements for electric drivers?
• Which type of sprinkler head is commonly used in fire protection?
• Where should emergency response plans be ideally created?
• The maximum ambient ceiling temperature for an ordinary temperature rated sprinkler is ______________.
• What is the primary purpose of a fire sprinkler system?
• What is the standard temperature rating for most fire sprinkler heads?
• Which feature is essential for the functionality of a sprinkler system?
• NfPA 13 pipe schedules require 15 psi residual pressure at the highest sprinkler. If a flow test shows 15 psi at the base above the riser, and the highest sprinkler is 9 feet above the riser, how is the correct pressure at the highest sprinkler determined?
• What is the primary purpose of hydraulic calculations in a sprinkler system?
• Why is periodic inspection of sprinkler heads important?
• What is the minimum temperature rating for most standard residential sprinkler heads?
• A rapid or large drop in air pressure is sensed by an exhauster, resulting in the exhauster opening a discharge port. What is this scenario characterized by?
• Unobstructed construction has horizontal structural members that are not solid and have openings at least __________ percent of their cross-sectional area.
• What is a significant responsibility of a sprinkler contractor regarding installation?
• What is the role of an alarm valve in a fire sprinkler system?
• When testing the operation of a dry pipe valve using the inspector's test valve, what is the acceptable water discharge delay for a system with a capacity of 500 gallons or less?
• A common cause for sprinkler discharge at schools or hotels is ______________.
• Can a six-story hotel use residential sprinklers in the dwelling units and corridors without applying light hazard installation criteria?
• In a reduced pressure backflow preventer, when does the relief valve open?
• To prevent automatic water supply from leaking out through the FDC, what must be installed in the FDC line?
• What should be included in a daily report for a sprinkler installation project?
• What does NFPA stand for?
• In the context of sprinkler systems, what is a hydraulic calculation?
• At what height are residential sprinkler heads typically required to be installed?
• What is the maximum pressure that can be applied without potentially damaging the closed clapper seat?
• All diameters of SDR 13 S pipe have pressure bearing capacity that is ___________________.
• Which component of the dry pipe valve routes water to the alarm system after the clapper is open?
• What common issue can occur if fire sprinklers are not regularly maintained?
• What is the primary function of a fire pump in a sprinkler system?
• What is the function of a backflow preventer in a sprinkler system?
• All permitted antifreeze chemicals are __________.
• In the context of sprinkler systems, what does 'hydraulically' refer to?
• According to NFPA standards, how frequently should fire sprinkler systems be inspected?
• What is the primary goal of a fire sprinkler system?
• Which document is used to ask questions regarding installation ambiguities?
• What is an extended coverage sprinkler designed for?
• According to sprinkler spacing guidelines, the distance from sprinklers to walls must not exceed which fraction of the allowable distance between sprinklers?
• What is the purpose of the inspector's test valve?
• Are pipe schedule systems commonly used in new construction?
• What is the primary use of a deluge sprinkler system?
• Which statement is true regarding joints that are at least partially threaded?
• What does the term "ordinary hazard density" refer to in sprinkler calculations?
• What does the differential design benefit in a dry pipe valve system?
• A standard response sprinkler must activate within what maximum time frame according to listing agencies?
• What is the preferred method for determining the pipe size of a sprinkler system?
• As you increase the hazard classification, density must _____________.
• Under normal conditions, the results of gridding is that every potential top location ____________________.
• If the ordinary hazard density is 0.15 gpm/ft² and the area of coverage is 400 sq ft, what is the minimum flow required?
• After setting up the Grunav/Star single-valve double-interlock valve, no leakage or water flow should occur through the velocity check. True or false?
• What is one advantage of using a pre-action sprinkler system?
• The stock transfer is important to the contractor because.
• For a room or office classified as a light hazard, NFPA 13 limits the spacing for standard spray or upright pendant sprinklers to ____________.
• What role does the designer play in sprinkler system installation?
• What is the importance of proper system zoning in sprinkler systems?
• The use of automatic sprinklers can effectively reduce fire damage by:
• What kind of testing might be required for an underground fire protection system?
• What feature is critical for fire sprinklers to activate promptly during a fire?
• Sprinkler locations can be found in the ______________.
• A sprinkler contractor who wanted to document out of sequence work would use a ________________.
• When conducting a flow test, a difference in elevation between the static/residual measuring point and the flow hydrant is important. Is this statement true or false?
• What should be included in the regular maintenance of a fire sprinkler system?
• What is one common cause of sprinkler performance failure?
• Which type of fastener is most likely to be rendered useless by the pipe rerouting?
• What is the purpose of an inspector’s test valve?
• What material is commonly used for pipes in fire sprinkler systems?
• If there is no positive head pressure on the intake or suction side of a centrifugal pump, what type of pump must be used?
• What component of a sprinkler system activates the water supply when exposed to heat?
• Velocity pressure is measured using a ____________.
• What does the term “leaning test” refer to in sprinkler maintenance?
• A museum is a typical example of _____________ occupancy.
• What role do drop assemblies play in sprinkler systems?
• When mounting a pump and driver, an acceptable formula for grout consists of:
• During a fire pump test, what is typically measured?
• The cornerstone of project documentation of a system should be ______________.
• What should be done to maintain a fire sprinkler system?
• What is the impact of installing branch lines at different elevations during hydraulic calculations?
• What duration is specified for a nitrogen-driven pressure tank in NFPA 13D for residential use?
• The maximum area of coverage specified in NFPA 13 for standard spray or pendent sprinklers in a hydraulically calculated system in extra hazard, where density >= .25 gpm is:
• What characteristic distinguishes wet pipe systems from dry pipe systems?
• What signs indicate a sprinkler system may need repair?
• What is the acceptable water discharge delay for a dry pipe valve during an inspection if the system capacity exceeds 800 gallons?
• What purpose does a flow test serve in a sprinkler system?
• The part of the stock list used for threaded pipe with or without fitting is known as ____________.
• Which material is commonly restricted for use in sprinkler system components due to corrosion issues?
• In terms of pressure, how do Class I and Class III standpipes for unsprinklered buildings compare?
• During a QOD sensitivity test, how much should the priming level valve be opened to bleed system air pressure?
• Which types of inspections are recommended for fire sprinkler systems?