NFPA 16: Standard for the Installation of Foam-Water Sprinkler and Spray Systems Practice Test

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• Which practices essential when applying foam to electrical equipment in a foam-water system?
• What device introduces foam concentrate into the water stream in most foam-water systems?
• What is a primary safety objective of keeping foam concentrate storage separate from the water supply?
• Foam concentrate pumps shall have means for flushing. Which statement best reflects this requirement?
• Which foam concentrate is based on fluorinated surfactants plus foam stabilizers to produce a fluid aqueous film for suppressing hydrocarbon vapors and is usually diluted with water to 1%, 3%, or 6%?
• In an inline balance-pressure proportioning system, where is the pressure regulating device that maintains constant pressure in the foam concentrate supply line placed?
• What should be minimized during foam-water system testing?
• If foam concentrate storage is not readily accessible for inspection, what risk increases?
• Which option is not listed as an inspection feature for atmospheric-type tanks?
• Under what condition may the line-to-line distance be 12 ft 6 in?
• Automatic detection equipment for foam concentrate injection must have complete supervision so that which condition occurs on failure, loss of supervising air pressure, or loss of electric energy?
• Which statement best describes the foam concentrate loss during testing?
• During service, which parts are not required to be flushed?
• In foam testing, the minimum flow test shall be equal to the flow of which sprinklers?
• Underground mains and lead-in connections shall be thoroughly flushed before connection to the system piping. True or False?
• Which statement best describes the required characteristics of storage tanks for foam concentrates?
• Which foam concentrate is described as usually derived from hydrocarbon surfactants and produces foam with high expansion ratios?
• Which standard governs testing and inspection of foam-water sprinkler systems?
• Full-flow testing of the proportioning system and discharge device is required to properly evaluate the proportioning system. Which option represents this requirement?
• Foam-water deluge and preaction systems shall be provided with what kind of tripping means?
• During acceptance testing, which parameter is determined to evaluate system performance?
• Which statement about foam-concentrate compatibility is true?
• What is the purpose of a standby or alternate foam concentrate supply?
• Which document is the standard for testing and inspection of foam-water sprinkler systems?
• What is the temperature rating for sprinklers located at an intermediate level, unless ambient conditions require higher?
• Detection required for foam-water deluge systems shall be in accordance with which NFPA standard?
• The corrosion-protection coatings requirement applies to which components?
• How does NFPA 16 address pump selection for foam systems?
• In addition to the fixed fire protection demand, the water supply design must provide hose stream capacity for how long?
• Which component is an example of a foam-water spray system component?
• Following a discharge test, what should be documented?
• Which type of foam concentrate is used for fighting fires on water-soluble materials and other fuels destructive to regular, AFFF, or FFFP foams?
• What is a preprimed system?
• Why must foam concentrates be compatible with system materials?
• Atmospheric-type foam concentrate outlets shall be located to accomplish what purpose?
• What is important about access to foam concentrate storage?
• What is the primary function of foam piping within a foam-water sprinkler system?
• Acceptance tests are intended to ensure the hazard is fully protected. Which statement best describes this?
• What does a foam concentrate supply system typically include?
• How is the operation of the proportioning equipment verified?
• During testing and inspection, identify the standard used for foam-water sprinkler systems?
• Which foam concentrate is based on fluorinated surfactants plus foam stabilizers to produce a fluid aqueous film for suppressing hydrocarbon fuel vapors and is typically diluted to a 1%, 3%, or 6% solution?
• What is a foam-water sprinkler system designed to protect?
• What is a common reason for foam system component failure?
• What should be considered when relocating or upgrading a foam system?
• Threadless couplings are permitted only if they are:
• What is venting used for in foam systems?
• The material compatibility requirement applies to which components?
• Only alcohol-type foam shall be used on fires in water-soluble solvents and polar solvents. Manufacturers of foam concentrates that are manufactured for protection of such hazards shall be consulted for applicability. On fires in water-soluble solvents and polar solvents, which type of foam should be used?
• What information should be included in system drawings for foam-water systems?
• Which NFPA standard governs water supplies for aircraft hangars in foam-water systems?
• Piping, fittings, and valves shall be of material compatible with which substances used in the system?
• What kind of hazard considerations are addressed by NFPA 16?
• Which statement about atmospheric-type storage tanks is correct regarding siting?
• Pressure-proportioning tanks shall have means for filling, gauging the level of foam concentrates, and for drainage, cleaning, and inspection of interior surfaces and the concentrate-holding bladder or diaphragm, if provided.
• What is the purpose of marking and labeling in NFPA 16?
• The sediment pocket volume is added to the foam concentrate quantity for which type of tank?
• The over-pressurization of foam concentrate pumps must not exceed what?
• Manual operation only shall be permitted for foam-water deluge systems under what condition?
• Which concentrate is described as being based on hydrocarbon surface active agents and listed as a wetting agent, foaming agent, or both?
• For open deluge systems, the concentration shall be verified by flow tests at which discharge demand?
• Which of the following is included in the acceptance testing for foam systems?
• Testing residuals helps ensure that the system is free of what after maintenance?
• Hydrostatic testing of all piping including foam concentrate lines and the system piping shall be conducted at which pressure levels?
• What is the primary objective of NFPA 16?
• What is the maximum spacing between sprinklers on a branch line absent special conditions?
• Discharge devices for foam-water wet pipe, dry pipe, and preaction systems shall be automatic in operation and non-air-aspirating.
• In fire-exposed areas where these fittings are located, protection shall be provided by which means?
• Foam-water deluge system is defined as?
• Why is corrosion control important in foam systems?
• Rubber-gasketed fittings shall be permitted to connect pipe in fire-exposed areas where the foam-water system is automatically controlled. Which statement best describes this allowance?
• Flushing shall be performed in accordance with which standard?
• Detection required for foam-water preaction systems shall be in accordance with NFPA which standard?
• Strainers shall be installed so as to be accessible for cleaning (flushing) while maintaining system discharge during an emergency. Which option best describes this requirement?
• What is the significance of testing foam concentrate residuals?
• What does NFPA 16 require regarding labeling of foam-related equipment?
• Discharge duration should be a period of 10 minutes with no less than 7 minutes. What is the required discharge duration?
• Foam-water dry pipe system is described as?
• When calculating the quantity of foam concentrates, what additional volume must be included?
• Following completion of discharge of foam solution to the hazards protected, foam-water sprinkler and spray systems shall discharge water until what occurs?
• Foam is defined as?
• Are there distinct design requirements for foam-water sprinkler versus foam-spray systems?
• Which statement best describes the role of the foam-proportioning device in a foam-water sprinkler system?
• If foam concentrate lines to injection points are underground or aboveground for more than 50 ft, what is required?
• What actions are typically required after a system discharge test?
• In storage, what is the main purpose of agitation?
• Atmospheric-type tank discharge outlets shall be located to furnish what on the pump suction?
• Which type of storage tanks requires means for gauging the level of foam concentrates?
• Which foam-water system uses a piping system containing air under pressure with a supplemental detection system in the same area as the sprinklers?
• Who should be consulted regarding limitations and recommendations based on listings or specific fire tests?
• What action is required for aging foam concentrates to maintain system efficacy?
• Rate refers to the total flow of solution per unit of time, expressed in what unit?
• What are the maximum allowable pull and movement required to secure operation of manual foam-injection controls?
• In automatic foam concentrate injection systems, manual tripping devices shall actuate the automatic control valve by which means?
• Which statement best describes the purpose of separating foam solution piping from water piping?
• What is the purpose of a foam test fire?
• Wet pipe foam-water systems shall be preprimed with what?
• Are foam-water sprinkler and spray systems designed differently?
• Why might NFPA 16 require spill containment for foam concentrate storage?
• To ensure positive injection of foam concentrate, the discharge pressure rating of pumps at the design discharge capacity shall be in excess of what?
• In a building where primary structural members are 25 ft apart and density > 0.25, what line-to-line distance between sprinklers is permitted?
• What is the relationship between NFPA 16 and other NFPA standards?
• Foam concentrates shall be listed for use with the foam concentrate proportioning equipment and with the discharge devices with which a given system is equipped.
• Foam concentrate pumps shall be provided with which of the following?
• What is the purpose of training personnel in foam-water system operations?
• Alcohol-resistant foams are required for which liquids?
• If foam concentrate pumps are capable of over-pressurizing the system, what must be provided?
• If foam concentrate is not compatible with a system component, what should be done?
• Which option describes the defined discharge pattern concept?
• Which of the following is a listed method under the 'other listed methods' category for foam proportioning?
• Foam concentrate pumps shall have means for which of the following?
• Foam-water sprinkler systems with dual extinguishing agent discharge are selectively applicable to which hazards?
• Acceptance tests shall determine staffing needs and other operating characteristics. Which option correctly reflects this?
• In fire-exposed areas containing rubber-gasketed fittings, protection must be provided by which means?
• How does NFPA 16 address corrosion control?
• The foam-water dry pipe system releases water to open a valve known as which type of valve?
• During post-installation testing, which result indicates proper proportioning?
• For closed foam-water systems, how is foam concentration verified?
• Which foam concentrate is described as very similar to protein-foam concentrate but with a synthetic fluorinated surfactant additive?
• What is the preferred method for introducing foam concentrates into the water flowing through the supply piping to the system?
• How should foam solution reach sprinklers in a foam-water system?
• What documentation should reflect any modifications to the foam-water system besides drawings?
• What kinds of records should be maintained for NFPA 16 systems?
• What is the purpose of foam solution piping separation from water piping?
• In automatic foam-water deluge systems, detection equipment shall be connected to what?
• Which foam concentrate consists primarily of products from a protein hydrolysate, plus stabilizing additives and inhibitors to protect against freezing, to prevent corrosion of equipment and containers, to resist bacterial decomposition, to control viscosity, and to otherwise ensure readiness for use under emergency conditions?
• During hydrostatic testing, which components must be included?
• After operation with foam, foam water-deluge and spray systems shall be flushed with water to remove foam residue. Which option is correct?
• Water supplies shall be designed to meet the fixed fire protection demand plus 250 gpm for inside and outside hose streams for at least 60 minutes, unless otherwise specified in the occupancy standards.
• The design and installation of foam concentrate pumps shall be in accordance with which standard?
• Water supplies for aircraft hangars shall be in accordance with NFPA 409.
• Over what area must the design water supply maintain discharge at the design rate for the required period?
• In a foam-water deluge system, the discharge devices are opened by what mechanism?
• What is the purpose of recirculation or agitation devices in foam storage?
• What is a critical factor in selecting a foam concentrate for a given hazard?
• In what type of facilities are foam-water spray systems sometimes used according to NFPA 16?
• What does hydrostatic testing in NFPA 16 verify?
• The corrosion-protection coatings for piping components shall be in accordance with which standard?
• Which portions are exempt from flushing during service?
• Which foam concentrate uses fluorinated surfactants to produce a fluid aqueous film for suppressing hydrocarbon fuel vapors?
• What is a major safety consideration when installing foam systems?
• Which statement best describes the required condition of fire-department connections?
• What must be ensured regarding foam concentrate solution quality?
• Which portions of the foam-water sprinkler system are not required to be flushed when the system is in service?
• The tests shall include foam discharge from a single system and simultaneous foam discharge of the maximum number of systems expected to operate on a single hazard. Which answer choice is correct?
• What is the goal of ensuring that foam concentrate and solution do not pose hazards to personnel or the environment during installation?
• Which foam concentrate is described as very similar to protein-foam concentrate but with a synthetic fluorinated surfactant additive?
• The storage temperatures listed for foam concentrates should be used as the temperature limits for locating storage tanks.
• Water supplies for deluge foam-water sprinkler systems and foam-water spray systems shall be automatic.
• For open deluge foam systems, foam concentration verification is conducted at which flow rate?
• Which system uses automatic sprinklers or nozzles attached to a piping system containing air that might be under pressure, with a supplemental detection system installed in the same area as the sprinklers?
• Which standard governs piping, valves, pipe fittings, and hangers, including corrosion-protection coatings, for foam-water systems?
• Foam application around electrical equipment must comply with which code?
• What is the role of detection and alarm within NFPA 16 foam systems?
• Which of the following is true regarding testing arrangements described for foam-water systems?
• Which statement is true regarding mixing foam concentrate brands?
• Discharge devices for foam-water wet pipe, dry pipe, and preaction systems shall be automatic in operation and non-air-aspirating.
• For foam concentrate injection, what happens if the detection equipment fails or loses supervising air pressure or electric energy?
• Water supplies shall be of a capacity and a pressure that are capable of maintaining foam discharge or water discharge, or both, at the design rate for the required period of discharge over the entire area protected by systems expected to operate simultaneously.
• What is the objective of arranging the system so that tests are performed with as little loss of foam concentrate as possible?
• Water supplied to foam-water systems shall be compatible with the foam concentrate to be used.
• What is the purpose of acceptance tests for foam-water sprinkler systems?
• How should the system be arranged to allow testing and inspection without discharging foam solution to the piping?
• Atmospheric-type storage tanks shall have capacities to accommodate which of the following?
• What is the discharge device?
• Line strainers are used in foam-water systems to remove solids to prevent:
• During acceptance testing, the discharge shall be continued for the time required to obtain what result?
• In corrosive atmospheres, the detection devices for foam concentrate injection must be what?
• What is the temperature rating range for sprinklers located at the roof of the ceiling?
• Where the water supply is dependent on public water sources, attention shall be given to the pollution hazard introduced by the use of foam concentrate.
• Which device type is commonly used as a foam concentrate proportioner?
• System test connections shall be sized to accommodate which flow conditions?
• What is the purpose of agitation of foam concentrate in storage?
• Rate refers to the total flow of solution per unit time, expressed in which unit?
• Atmospheric-type tanks shall be equipped with which features to provide for inspection?
• What is foam concentrate used for in foam-water systems?
• The use of threadless couplings shall be permitted where required by the AHJ and where listed for such use.
• Which statement about the purpose of providing a positive head on the pump suction is correct?
• Which foam concentrate is usually derived from hydrocarbon surfactants and used in specially designed equipment to produce foams with foam-to-solution volume ratios of 20:1 to approximately 1000:1?
• During foam proportioning tests, discharge foam solution shall be collected and disposed of by whom?
• Which statement accurately describes foam-proportioning devices?
• What is the expectation for coordination with other building systems?
• Foam-water systems shall be of which types?
• Which statement describes an acceptable testing approach for testing mechanical and electrical components without foam discharge?
• Foam concentrates shall be listed for use with which components?
• What is the purpose of using separate foam concentrate piping?
• What is a key requirement for foam concentrate storage?
• Where should the fire department connection be installed when required?
• What is the maximum sprinkler spacing between sprinklers on a branch line under standard conditions?
• Foam-water systems shall be of which types?
• Water containing solids likely to clog discharge devices but otherwise acceptable for making foam shall be permitted to be used after passing through line strainers.
• Which concentrate is based on foaming agents other than hydrolyzed proteins and includes aqueous film-forming foam concentrates, medium- and high-expansion foam concentrates, and other synthetic foam concentrates?
• How are system changes documented?
• During testing, which standard applies to foam-water sprinkler systems?
• Which statement accurately reflects the flushing requirement for foam concentrate portions during service?
• Bladder tanks shall not be included in pressure tests.
• Which element is directly involved in regulating the amount of foam concentrate that reaches discharge points?
• Acceptance tests require the test pressure to be maintained without loss for how long?
• Discharge devices and foam concentrates shall be listed for use together.
• Strainers shall be capable of removing all solids of a size that would obstruct system components. Which statement best describes this requirement?
• Perforations shall be no larger than the smallest orifice in the system and no less than what size?
• What permanent markings must be on the exposed orifice plate indicator tab or nameplate?
• How does NFPA 16 handle system testing intervals?
• Which statement about sprinkler temperature ratings is correct?
• In a balance-pressure system, which device maintains automatically the equal pressures between foam concentrate and water when using a pump discharging through a metering orifice into a controller?
• Foam concentrate injection shall be activated automatically by, or concurrently with, activation of which component?
• Which foam concentrate is based on hydrocarbon surface active agents and listed as a wetting agent, foaming agent, or both?
• Which foam-water system uses air under pressure with a supplemental detection in the same area, i.e., preaction?
• If foam concentrate is not compatible with system materials, what issues are most likely to occur?
• Why are foam concentrates stored with spill containment and ventilation in mind?
• Which component is typically used to move foam concentrate from storage toward the proportioning device in a foam-water system?
• What are the two system types defined by NFPA 16?
• When upgrading a foam system, what is essential regarding components?
• What should an NFPA 16 maintenance record include?
• Which statement best describes maintenance emphasis in NFPA 16?
• Which term refers to a foam concentrate that includes aqueous film-forming foam concentrates, medium- and high-expansion foam concentrates, and other synthetic foam concentrates?
• In a foam concentrate injection system, activation occurs automatically by what event?
• What is the minimum perforation size required in inches?
• The exposed orifice plate indicator tab or nameplate must include what permanent markings?
• Which foam-water system is designed to use nozzles rather than sprinklers?
• Over pressure shall not exceed the...
• In automatic foam-water deluge systems, what is the purpose of the detection equipment?
• Which configuration describes an inline balance-pressure proportioning system?
• Discharge devices for foam-water wet pipe, dry pipe, and preaction systems shall be automatic in operation and non-air-aspirating.
• How does NFPA 16 ensure the safety of maintenance personnel?
• What capability makes foam-water sprinkler systems suitable for large, open facilities?
• If a foam concentrate is incompatible with a component, what action is prescribed?
• What is the main objective of testing after installation?
• Foam-water spray system?
• Which statement best describes why dedicated piping is used in a foam-water system?
• How shall foam concentrate pumps operate upon system actuation?
• Where does NFPA 16 require foam concentrate storage to be located?
• Which term defines a homogeneous mixture of water and foam concentrate in the correct proportions?
• Discharge devices for foam-water deluge and spray shall be permitted to be air-aspirating, or they shall be permitted to be non-air-aspirating.
• Which document governs testing and inspection of foam-water sprinkler systems?
• The manual devices and/or controls for foam concentrate injection shall meet which requirements?
• Where used in a corrosive atmosphere, detection devices shall be what?
• Foam-water deluge systems are applicable to the protection of which hazards?
• If listed strainers of the proper size are not available, strainers that have a ratio of open-basket area to inlet pipe size of at least 10:1 shall be used. What ratio is required?
• What are foam spray nozzles or spray manifolds designed to do in a foam-water spray system?