Water-Based Fire Suppression Systems Flashcards
Name basic types of automatic sprinkler systems. (505-507)
Wet-pipe sprinkler system
Dry-pipe sprinkler system
Deluge sprinkler system
Preaction sprinkler system
Antifreeze sprinkler system
Circulation closed-loop sprinkler system
Combined dry pipe & preaction sprinkler system
Multicycle sprinkler system
List the major components included in automatic sprinkler systems.(508)
Water supplies
Waterflow Control Valves
- outside stem & yoke (OS&Y)
- post indicator valve (PIV)
- wall post indicator valve (WPIV)
- post indicator valve assembly (PIVA)
Operating Valves
- alarm-test valves
- check valves
- drain valves
- trim valves
- drip check or drip ball valves
Water Distribution Pipes
Sprinklers
Detection and Activation Devices
What are some of the characteristics of residential sprinkler systems? (515, 518-519)
Address life safety by working to prevent flashover in the room of origin and enabling occupants to evacuate. The cost is lower than an NFPA 13 system and some of the components have been scaled back.
- Some systems are fully integrated into the domestic plumbing system.
- Sprinkler heads are designed for fast response.
- Distribution patterns discharge water to break the thermal layering and prevent flashover conditions.
- Lower water supply requirements
- 18gpm for single sprinkler, 13gpm ea for two
- 144sf max per sprinkler, 12x12 spacing with max 6’ from wall (some sprinklers may allow for greater spacing)
How does a water-spray fixed system operate? (520-521)
NFPA 15 and NFPA 25 (testing inspection maintenance). Discharges water over area or surface through an arrangement of pipes and nozzles. Activated by automatic heat detection system or manual activation system.
Components:
- reliable water supply
- piping
- automatic or manual detection & activation devices
- waterflow control valve
- water-spray nozzles
Applies water droplets of a predetermined pattern, particle size, velocity, and density through specially designed nozzles.
Hazard categories:
- Flammable gaseous and liquid materials
- Electrical Equipment
- Ordinary Class A combustibles
- Certain hazardous solids (propellants, pyrotechnics)
- Exposure protection (separate hazards, means of egress)
Explain how a water-mist systems works. (521-523)
NFPA 750 and NFPA 25 (test/insp/maint). Similar to water-spray fixed system except it discharges a fine mist of water.
- Absorbs larger quantities of heat that water-spray or automatic.
- Raises humidity of room enough to halt combustion.
- Displaces oxygen and blocks radiant heat production.
- Less water damage
- higher pressures (low 175 psi, intermediate 175-500 psi, high 500 psi) created by compressed air, nitrogen, or high-pressure water pumps
- Air pressure may be supplied in water tube itself or second air tube to each nozzle.
- Small diameter, pressure rated copper or stainless steel tubing
- similar to deluge, all nozzles in room or zone open
- activated by detection device or manual
Protects: Class A and Class B fires
- Gas jet fires
- computer equipment and rooms
- flammable and combustible liquids
- aircraft passenger cabins
- marine vessels
- ordinary Class A combustibles
Describe how a foam-water system works. (523-524)
NFPA 16. Discharges foam-water solution onto a fire. Commonly for Class B but also may protect Class A hazards. When properly designed they may suppress vapors from flammable liquid spill.
- Can be wet-pipe, dry-pipe, preaction, or deluge.
- At least 15 minutes to control and suppress.
- Proportioner, in line valve or pump, designed to inject and mix foam concentrate with water
- Annual test of proportioner
Inspector verify minimum required volume of foam concentrate and correct type of foam provided and maintained.
Describe standpipe and hose systems and the standard components (526)
- Hose stations
- Water supplies
- Waterflow control valves
- Risers
- Pressure-regulating devices
- Fire Department Connections (FDCs)
Differentiate between the standpipe classifications. (526)
NFPA 14
Class I: Firefighters. Large handlines 2-1/2” hose connection. Supply effective fire streams during more advanced stages of fire.
Class II: Trained Building Occupants . 1-1/2” hose, nozzle, and hose rack. In declining favor to Class I and Class III.
Class III: Combination. Both 2-1/2” and 1-1/2” hose connections, can be used simultaneously. Typically 2-1/2” has 1-1/2” adapter.
What are the types of standpipe and hose systems? (527-529)
~ Automatic-wet, water in system at all times
~ Automatic-dry, air/nitrogen under pressure, permanently attached to water supply, water enters when hose valve opened
~ Semiautomatic-dry, empty pipe connected to permanent water supply. Device such as deluge valve admits water upon activation of remote control device at hose connection.
~ Manual-dry, domestic water in system, relies on fire department to provide water at FDC to meet demand
~ Manual-wet, maintains domestic water fill to detect leaks, relies on fire department to provide water at FDC
What are some of the inspection requirements for water supplies, standpipe hose valves, regulating devices, and fire department connections? (529-532)
- Are standpipes accessible, visible
- Do valves work
- Are caps in place
- Are doors closed and latched
- Verify inspection & maintenance records
- Be aware of secondary water supply
- Verify operational readiness of supply
- Verify standpipe pressure
- Standpipe Hose Valves within 130ft
- Pressure regulating devices where hose outlet > 175 psi
- Verify required testing for pressure regulating valves
- Verify FDC meets standards with correct connections, coupling threads, locking caps & keys
- FDC sign must indicate which floors it services
List the types of fire pumps that can be installed as stationary pumps for fire suppression systems.
NFPA 20, 5 types of centrifugal pumps:
Horizontal split-case
Vertical split-case
Vertical inline
Vertical turbine
End suction
Differentiate between the types of fire pump drivers. (535-536)
Electric Motor Driver. Most common. Simple, reliable, easily maintained. May require larger electrical service to bldg.
Diesel Engine Driver. Listed. Used when driver independent of local electrical power is needed. More complex, expensive, and more maintenance. Requires batteries to start and an on-site fuel supply. Must be equipped with overspeed shutdown devices, tachometers, oil-pressure gauges, temperature gauges. Enclosure needs adequate air flow and removal of exhaust. Tested weekly for 30 minutes.
Steam Turbine. Least common. Steam pressure to drive horizontal and vertical split-case pumps directly. Only economical if uninterruptible supply of steam is available.
Describe different types of controllers found on stationary fire pump systems. (537-538)
NFPA 20.
Electric Motor. Pressure sensing switch detects drop in pressure resulting from flow of water, which energizes a circuit that closes the contacts for the motor circuit and starts the pump motor. When water stops flowing in the system, the pressure switch interrupts the motor circuit, thereby turning off pump.
Diesel Motor. Closes the circuit for the starting motor on the diesel engine. Monitors and contains alarms for:
- low engine oil pressure
- high engine coolant temperature
- failure to start
- engine overspeed shut-down
- battery failure
What does an inspector need to do before performing an inspection, witnessing a test, or reviewing records for a water-based fire suppression system? (545)
- Review the records of previous inspections and identify the make, model, and type of equipment, including the area protected by the system
- Determine whether the occupancy classification has changed
- Review building permits for the site to determine whether any approved alterations have been made to the structure or facility
- Wear appropriate clothing for dirty locations such as attics and basements
- Obtain permission from the owner/occupant before performing any inspection
Describe the steps involved in inspecting an automatic sprinkler system.
- Verify indicating control valve opened fully and secured
- Verify indicating control valve in operating condition, accessible, undamaged
- Check PIV’s operating wrench in place, target properly adjusted, cover glass in place and clean, bolts tight and barrel casing intact
- FDC not blocked, swivels rotate freely, caps in place, keys provided, verify threads
- Automatic sprinkler protection provided throughout occupied areas
- Verify inlet and outlet gauges on riser indicating water and air pressure available in system
- Wet-pipe systems: verify freeze protection
- Dry-pipe systems: riser room heated, air compressor functional, system piping pressurized
- Verify sprinklers free from damage, corrosion, paint, not subject to recall
- Inspection, testing, maintenance report completed?
- Quarterly main drain test, verify the inspection and witness alarm test
- Dry-pipe:
- air pressure readings correspond to previously recorded, ball drip valve moves freely and allows trapped water to seep out of FDC
- velocity drip valve free to move and trapped water can seep out
- drum drips drained
- priming water correct level
- systems air pressure maintained 15-20 psi above trip point, no air leaks
- air compressor approved for sprinkler system use, maintained, operable, sufficient size
- Observe alarm-trip test performed by owner/rep’s sprinkler company rep
- inspect sprinkler cabinet has required number and type of sprinklers
- note condition and location of sprinklers, hangers, piping
- check for changes in occupancy, use, fire hazards, equipment
What are some of the conditions inspectors should check or verify when inspecting residential sprinkler systems? (552-554)
Listed piping materials, min 1/2”
Plastic piping limitations if used
Sprinkler placement and spacing
Areas that are exempt from coverage
Name some of the water-spray fixed system components inspectors need to check during an inspection.
Valves
Detection devices
Piping
Nozzles
Strainers
Water Supply
What foam-water system components should be checked during an inspection? (555)
Valves
Detection devices
Piping
Nozzles
Strainers
Water Supply
Verify valves in appropriate position for the type of proportioner in use:
~ Standard pressure, verify ball drip valves are open, operable, no corrosion on storage tanks
~ Bladder tank, check operation of waterflow control valves, no corrosion on storage tank, look for foam in water around bladder
~ Line, inspect strainers not obstructed, no corrosion on storage tank, verify pressure vacuum vent operational
~ Standard and inline balanced-pressure, strainers not obstructed, pressure vacuum vent operational, gauges operational, sensing line valves open, power available for foam pump
~ Orifice plate, same as balanced-pressure proportioners except no sensing line valves
What conditions should inspectors look for in standpipe and hose systems? (556)
- All water supply valves are sealed in open position
- Fire pump in operating condition with power available
- Hose valves free of paint, corrosion, other impediments
- Hose valves operable
- Hose valve threads not damaged
- Hose valve wheels present and not damaged
- Hose cabinets accessible
- Hose (when present) in good condition, dry, properly positioned on rack or reel
- Discharge outlets in dry systems closed
- Dry standpipe drained of moisture
- FDC not blocked, swivels rotate freely, caps in place, verify appropriate keys provided if locking, verify threads compatible with FD coupling
What are some of the inspection requirements for stationary fire pumps?
Weekly inspection (building maintenance)
Pumps should be operated from automatic starts if equipped and brought up to full speed pumping a substantial stream.
Evaluate electrical power
Visual check control panel, power is on
Flow test only way to check for obstructions
For a fire suppression system to be effective, it must be reliable and: (504)
A. automatic.
B. inexpensive.
C. less than five years old.
D. less than ten years old.
A
Most fires in sprinkler-equipped structures are controlled by the operation of: (504)
A. all of the sprinklers.
B. one or two of the sprinklers.
C. at least fifty percent of the sprinklers.
D. at least seventy-five percent of the sprinklers.
B
Which automatic sprinkler system is typically provided in areas where freezing temperatures are likely to occur? (505)
A. Dry-pipe sprinkler system
B. Wet-pipe sprinkler system
C. One-time use sprinkler system
D. Combination dry-pipe and wet-pipe system
A
All sprinklers discharge water simultaneously in: (506)
A. deluge sprinkler systems.
B. dry-pipe sprinkler systems.
C. wet-pipe sprinkler systems.
D. preaction sprinkler systems.
A
Which of the following is a factor that determines the minimum waterflow required for an automatic sprinkler system? (508)
A. Cost
B. Past history of fires
C. Mutual aid agreements
D. Hazard being protected
D
Which of the following statements about waterflow control valves in automatic sprinkler systems is MOST accurate? (509)
A. They must be indicating-type valves.
B. They must be non-indicating type valves.
C. They can be either indicating-type or non-indicating type valves.
D. They can be any type of valve made by the sprinkler manufacturer.
A
Which operating valve is provided in automatic sprinkler systems to limit the flow of water to one direction? (510)
A. Drain valves
B. Check valves
C. Alarm-test valves
D. Drip check or drip ball valves
B
Which method is the MOST accurate for determining the pipe diameters of automatic sprinkler system pipes? (511)
A. Previous usage
B. Pipe schedule tables
C. Hydraulic calculations
D. Correlation of hazards
C
Which type of automatic sprinkler is mounted horizontally from a wall face so that the deflector causes the water to be distributed in an arc over the protected area? (512)
A. Upright
B. Sidewall
C. Recessed
D. Concealed
B
Which type of automatic sprinkler is designed to direct 40 to 60 percent of its discharge in a downward direction? (514)
A. Extended coverage
B. Old-style/conventional
C. Control mode specific application
D. Quick-response early suppression
B
What is a primary concern for residential sprinkler systems installed according to NFPA® 13? (518)
A. Life safety
B. Installation cost
C. Lifetime of the sprinkler system
D. Likelihood of false activation of the sprinkler system
A
Which fire protection system discharges water over the area or surface of electrical equipment to be protected through an arrangement of pipes and nozzles? (520)
A. Water-mist system
B. Foam-water system
C. Combination system
D. Water-spray fixed system
D
Which fire protection system is considered a replacement for fixed fire suppression systems that used halogenated hydrocarbon agents? (521)
A. Water-mist system
B. Foam-water system
C. Combination system
D. Water-spray fixed system
A
Which fire protection system requires a proportioner? (524)
A. Water-mist system
B. Foam-water system
C. Combination system
D. Water-spray fixed system
B
Which classification of standpipe and hose systems is primarily for use by firefighters trained in handling large handlines (2½-inch [65 mm] hose)? (526)
A. Class I
B. Class II
C. Class III
D. Class IV
A
Which classification of standpipe and hose systems is designed to be used by both fire department personnel and trained building occupants? (526)
A. Class I
B. Class II
C. Class III
D. Class IV
C
Which type of standpipe system contains unpressurized air in pipes and has no permanent water supply? (529)
A. Manual-dry
B. Manual-wet
C. Automatic-dry
D. Automatic-wet
A
Which of the following is a reason for use of pressure regulating devices at hose outlets? (530)
A. Limit personnel required for hoselines
B. Reduce monetary costs for water supplies
C. Allow some fire protection requirements to be waived
D. Prevent pressures that make fire hose difficult or dangerous to handle
D
Which stationary fire pump’s main advantage is its compactness? (533)
A. End suction
B. Vertical turbine
C. Vertical split-case
D. Horizontal split-case
C
Which fire pump is very useful for lifting water from a source below the pump? (534)
A. End suction
B. Vertical turbine
C. Vertical split-case
D. Horizontal split-case
B
Fire loss data reveals that in buildings equipped with automatic sprinklers, about _____ percent of all fires were controlled or extinguished by the sprinkler system. (504)
A. fifty-five
B. sixty-two
C. ninety-four
D. ninety-nine
C
When a fire is not controlled in a sprinkler-equipped building, which of the following is MOST likely a cause? (504)
A. Inclement weather conditions
B. Blocked entrances or egresses
C. Inadequate or lack of water supply
D. Slow response time of the fire department
C
Thermally sensitive devices such as fusible links keep most sprinklers closed and when heat from a fire affects these devices: (504)
A. all sprinklers activate automatically.
B. sprinklers closest to the fire activate automatically.
C. sprinklers farthest from the fire activate automatically.
D. sprinklers activate in a cascade fashion one after the other.
B
Which type of sprinkler systems operate when an electronic detector or manual control device is activated? (504)
A. Deluge or dry-pipe sprinkler systems
B. Deluge or preaction sprinkler systems
C. Wet-pipe or dry-pipe sprinkler systems
D. Preaction or wet-pipe sprinkler systems
B
Which automatic sprinkler system is continually charged with water under pressure that discharges immediately when heat from a fire activates one or more sprinklers? (505)
A. Deluge sprinkler system
B. Preaction sprinkler system
C. Dry-pipe sprinkler system
D. Wet-pipe sprinkler system
D
Which automatic sprinkler system is continually charged with compressed air and when a sprinkler activates, the air is released, allowing the water-flow control valve to operate and charge the system with water? (505)
A. Deluge sprinkler system
B. Dry-pipe sprinkler system
C. Wet-pipe sprinkler system
D. Preaction sprinkler system
B
Which automatic sprinkler system consists of open sprinklers attached to unpressurized dry pipes? (506)
A. Deluge sprinkler system
B. Dry-pipe sprinkler system
C. Wet-pipe sprinkler system
D. Preaction sprinkler system
A
Which automatic sprinkler system is continually charged with air that may or may not be under pressure and operates when a sprinkler opens due to a thermally sensitive device and the activation of detection devices? (506)
A. Deluge sprinkler system
B. Preaction sprinkler system
C. Wet-pipe sprinkler system
D. Combination sprinkler system
B
Which automatic sprinkler system is continually charged with air under pressure combined with a detection system that controls the operation of the waterflow control valve? (507)
A. Looped sprinkler systems
B. Multicycle sprinkler systems
C. Combined dry pipe and deluge sprinkler system
D. Combined dry pipe and preaction sprinkler system
D
Which automatic sprinkler system is used in special circumstances where an additional level of protection against false activation is required, such as in data centers or museums? (507)
A. Looped sprinkler system
B. Multicycle sprinkler system
C. Combined dry pipe and deluge sprinkler system
D. Combined dry pipe and preaction sprinkler system
D
Which automatic sprinkler system is designed to be operated repeatedly in response to a detection device and shuts on and off based on the demand indicated by the detection device? (507)
A. Looped sprinkler system
B. Multicycle sprinkler system
C. Combined dry pipe and deluge sprinkler system
D. Combined dry pipe and preaction sprinkler system
B
Which automatic sprinkler system has the advantage of water flowing to the sprinklers from multiple directions? (507)
A. Gridded systems
B. Multicycle sprinkler systems
C. Combination sprinkler systems
D. Backup distribution sprinkler systems
A
While maintaining a minimum required residual pressure in the system, a water supply must be able to deliver the required volume of water to: (508)
A. immediately extinguish the fire.
B. at least 50% of all sprinklers in the system.
C. at least 75% of all sprinklers in the system.
D. the highest or most remote sprinkler in a structure.
D
Which of the following statements about sprinkler systems and a water supply is MOST accurate? (508)
A. The secondary water supply may be from a private source.
B. The primary water supply must come from a public source.
C. The primary water supply may come from a public or private source.
D. Both the primary and secondary water supply must come from a public source.
C
What is the purpose of fire department connections as part of automatic sprinkler systems? (508)
A. Protect firefighters in the structure
B. Allow for use of any secondary water supply
C. Boost the pressure of the primary water supply
D. Serve as a backup protection if sprinkler system fails
C
Which of the following are used to turn off or isolate the water supply to the system when it is necessary to perform maintenance, change sprinklers, or interrupt operation? (508-509)
A. Key locks
B. Remote sensing valves
C. Waterflow control valves
D. Main system control panels
C
Which type of valve is a gate valve that has a yoke on the outside with a threaded stem or screw? (509)
A. Post indicator valve
B. Outside stem and yoke
C. Wall post indicator valve
D. Post indicator valve assembly
B
Which type of valve is an underground gate valve that has a hollow metal post attached to the valve housing? (509)
A. Post indicator valve
B. Outside stem and yoke
C. Wall post indicator valve
D. Post indicator valve assembly
A
Which operating valve is located on the riser and used to flow water for testing the waterflow alarm? (510)
A. Drain valves
B. Check valves
C. Alarm-test valves
D. Drip check or drip ball valves
C
Which valve is used to drain water from piping when pressure is relieved in the pipe? (510)
A. Drain valves
B. Check valves
C. Alarm-test valves
D. Drip check or drip ball valves
A
Which valve is usually a globe valve and may sometimes be found at a remote location within a sprinkler system? (510)
A. Secondary valve
B. Main check valve
C. Firefighter’s valve
D. Inspector’s test valve
D
Which are vertical sections of pipe that connect the underground supply to the rest of the piping in the system? (510)
A. Hangers
B. Main loops
C. Branch lines
D. System risers
D
The pipe schedule table method is limited to: (511)
A. all known hazards.
B. light and ordinary hazards.
C. occupancies under a certain size.
D. occupancies with no known risks.
B
Which method allows for calculations to be made to protect all types of hazards, including extra hazards, with any type of piping and any type of sprinkler discharge device? (511)
A. Previous usage
B. Pipe schedule tables
C. Hydraulic calculations
D. Correlation of hazards
C
Which type of sprinkler is recessed and covered with a removable decorative cover plate that releases when exposed to a specific level of heat? (512)
A. Flush
B. Pendent
C. Recessed
D. Concealed
D
Which type of sprinkler is mounted in a ceiling with the body of the sprinkler, including the threaded shank, above the plane of the ceiling? (512)
A. Flush
B. Pendent
C. Recessed
D. Concealed
A
Which type of sprinkler is installed downward from the branch line so that water flowing from the sprinkler strikes the deflector and is distributed over the protected area? (512)
A. Flush
B. Pendent
C. Recessed
D. Concealed
B
Which type of sprinkler is installed upward from a line so that water is discharged up against the deflector? (512)
A. Upright
B. Sidewall
C. Recessed
D. Concealed
A
Which type of sprinkler is a type of spray sprinkler capable of producing characteristic large water droplets and is listed for its capability of providing fire control of specific high-challenge fire hazards? (513)
A. Extended coverage
B. Early suppression fast-response
C. Control mode specific application
D. Quick-response early suppression
C
Which type of sprinkler is designed to rapidly suppress fires in high-challenge hazards such as warehouses? (514)
A. Extended coverage
B. Early suppression fast-response
C. Control mode specific application
D. Quick-response early suppression
B
Which type of sprinkler is normally provided in a deluge sprinkler system? (515)
A. Open
B. Early suppression fast-response
C. Control mode specific application
D. Quick-response early suppression
A
Which type of sprinkler is designed to provide increased life safety in hotels, motels, and similar residential occupancies? (515)
A. Open
B. Residential
C. Control mode specific application
D. Quick-response early suppression
D
Which type of sprinkler is designed for fast response in residential occupancies where life safety in the room of origin is the primary concern? (515)
A. Open
B. Residential
C. Control mode specific application
D. Quick-response early suppression
B
Which type of sprinkler is usually installed in areas containing acids or caustic materials or processes? (515)
A. Dry
B. Institutional
C. Corrosion-resistant
D. Intermediate level or rack storage
C
Which type of sprinkler is designed to be damage resistant with no removable parts? (515)
A. Dry
B. Institutional
C. Corrosion-resistant
D. Intermediate level or rack storage
B
Which detection and activation device occurs when thermocouples reach a preset temperature, releasing the sprinkler plug? (516)
A. Waterflow alarm
B. Sprinkler activation
C. Electronic heat detector
D. Manually activated system
B
Which sprinkler system device activates preaction and deluge systems by smoke, heat, or rate-of-rise detectors in the protected area? (517)
A. Waterflow alarm
B. Sprinkler activation
C. Electronic heat detector
D. Manually activated system
C
Which detection and activation device sounds a warning when a sprinkler activates and water begins to flow? (517)
A. Waterflow alarm
B. Sprinkler activation
C. Electronic heat detector
D. Manually activated system
A
The water supply requirements for residential sprinklers are: (519)
A. based on available water supply.
B. less than those for standard sprinkler systems.
C. the same as those for standard sprinkler systems.
D. greater than those for standard sprinkler systems.
B
Unless otherwise approved, spacing for sprinklers in residential systems is a: (519)
A. minimum of 64 square feet (5.9 m2) per sprinkler.
B. maximum of 64 square feet (5.9 m2) per sprinkler.
C. minimum of 144 square feet (13 m2) per sprinkler.
D. maximum of 144 square feet (13 m2) per sprinkler.
D
The maximum spacing between sprinklers in residential systems is: (519)
A. 6 feet (2 m).
B. 12 feet (3.5 m).
C. 20 feet (6 m).
D. 30 feet (9 m).
B
Which fire suppression system provides protection to specific hazards by applying water droplets of a predetermined pattern, particle size, velocity, and density through specially designed nozzles? (520)
A. Water-mist system
B. Foam-water system
C. Combination system
D. Water-spray fixed system
D
Which fire suppression system uses a very fine spray that controls or extinguishes fire by displacing oxygen and blocking radiant heat production? (521)
A. Water-mist system
B. Foam-water system
C. Combination system
D. Water-spray fixed system
A
Water-mist fire suppression systems are designed to be operated at: (522)
A. intermittent high and low pressures.
B. the same pressures as standard sprinkler systems.
C. considerably lower pressures than standard sprinkler systems.
D. considerably higher pressures than standard sprinkler systems.
D
Water-mist fire suppression systems utilize air cylinders that must be hydrostatically tested before recharging if it has been more than: (523)
A. three years since their last tests.
B. five years since their last tests.
C. seven years since their last tests.
D. ten years since their last tests.
B
Water-mist fire suppression systems that utilize air cylinders that have not been discharged should be emptied and tested: (523)
A. annually.
B. every five years.
C. every seven years.
D. every twelve years.
D
Which fire suppression system is commonly used to protect Class B fire hazards and can be a wet-pipe, dry-pipe, preaction, or deluge system? (523)
A. Water-mist system
B. Foam-water system
C. Combination system
D. Water-spray fixed system
B
As part of the maintenance requirements of NFPA® 25, standpipe and hose fire suppression systems must be flow and hydrostatic tested: (525)
A. annually.
B. every three years.
C. every five years.
D. every ten years.
C
Which of the following is a component of standpipe and hose fire suppression systems? (526)
A. Control panel
B. Water purifying filter
C. Pressure-regulating device
D. Emergency backflow indicator
C
Which classification of standpipe and hose fire suppression systems must be capable of supplying effective fire streams during the more advanced stages of fire within a structure? (526)
A. Class I
B. Class II
C. Class III
D. Class IV
A
Which classification of standpipe and hose fire suppression systems is primarily designed for use by building occupants trained in its use or by fire department personnel? (526)
A. Class I
B. Class II
C. Class III
D. Class IV
B
Which classification of standpipe and hose fire suppression systems has both 2½-inch (65 mm) hose connections and 1½-inch (38 mm) hose connections? (526)
A. Class I
B. Class II
C. Class III
D. Class IV
C
Which type of standpipe fire suppression system contains water in the system at all times and is attached to a water supply capable of supplying the system demand at all times? (527)
A. Manual-dry
B. Manual-wet
C. Automatic-wet
D. Automatic-dry
C
Which type of standpipe fire suppression system contains air or nitrogen under pressure and is permanently attached to a water supply? (527)
A. Manual-dry
B. Manual-wet
C. Automatic-wet
D. Automatic-dry
D
Which type of standpipe fire suppression system contains an empty pipe that is connected to a permanent water supply? (529)
A. Manual-dry
B. Manual-wet
C. Automatic-wet
D. Semiautomatic-dry
D
Which type of standpipe fire suppression system contains water in the system from a domestic supply but relies on the fire department to provide water through the FDC to meet system demand? (529)
A. Manual-dry
B. Manual-wet
C. Automatic-wet
D. Automatic-dry
A
Which of the following is MOST likely to reduce water supply requirements for a standpipe fire suppression system? (529)
A. Low value fire load
B. Mutual aid agreements
C. No past history of fires
D. Installed automatic sprinklers
D
Current practice is to locate fire hose valves so that any part of a floor is within: (530)
A. 60 feet (18 m) of the standpipe hose connection.
B. 100 feet (30 m) of the standpipe hose connection.
C. 130 feet (40 m) of the standpipe hose connection.
D. 200 feet (61 m) of the standpipe hose connection.
C
The actual hose connections of a standpipe hose valve can be located no more than: (530)
A. 2 feet (.6 m) from floor level.
B. 3 feet (.9 m) from floor level.
C. 5 feet (1.5 m) from floor level.
D. 6 feet (1.8 m) from floor level.
D
Which pressure-regulating device at a hose outlet is preferred for managing excessive pressure and is considered to be the most reliable method of pressure control? (531)
A. Pressure-control devices
B. Pressure-reducing devices
C. Pressure-stabilizing devices
D. Pressure-restricting devices
A
Which pressure-regulating device at a hose outlet uses a spring mechanism that compensates for variations in pressure? (531)
A. Pressure-control devices
B. Pressure-reducing devices
C. Pressure-stabilizing devices
D. Pressure-restricting devices
B
Large buildings having two or more zones require a fire department connection (FDC): (531)
A. for each zone.
B. for every two zones.
C. on every other floor.
D. on each floor that is occupied.
A
Which of the following is the main function of a stationary fire pump? (532)
A. Monitor water flow
B. Ensure there is an excess supply of water
C. Decrease the pressure of the water that flows through it
D. Increase the pressure of the water that flows through it
D
The most common type of fire pump found in stationary fire suppression systems is referred to as a(an: (532)
A. end suction.
B. vertical inline.
C. vertical turbine.
D. horizontal split-case.
D
Which stationary fire pump is almost always driven by an electric motor that sits on top of the pump? (533)
A. End suction
B. Vertical inline
C. Vertical split-case
D. Horizontal split-case
C
Which of the following is a single-stage fire pump designed to fit into the intake/discharge line with the driver located above the inline impeller? (534)
A. End suction
B. Vertical inline
C. Vertical split-case
D. Horizontal split-case
B
Which fire pump includes advantages such as the ease of installation as a replacement pump, the compact space required for the pump, and the ease of maintenance of the pump and driver? (534)
A. End suction
B. Vertical inline
C. Vertical split-case
D. Horizontal split-case
B
6For which fire pump are the impellers actually located within the water supply source? (534)
A. End suction
B. Vertical turbine
C. Vertical split-case
D. Horizontal split-case
B
Which fire pump includes advantages such as ease of installation, simplified piping arrangement, and reduced pipe strain? (534)
A. End suction
B. Vertical turbine
C. Vertical split-case
D. Horizontal split-case
A
Which of the following is the most common method for driving a fire pump? (535)
A. Electric motor
B. Diesel engine
C. Steam turbine
D. Liquefied petroleum
A
Which of the following drivers is MOST likely to be used where a driver independent of the local electrical power supply is needed? (536)
A. Electric motor
B. Diesel engine
C. Steam turbine
D. Liquefied petroleum
B
Which of the following drivers provides steam pressure to drive both horizontal and vertical split-case pumps directly? (536)
A. Electric motor
B. Diesel engine
C. Steam turbine
D. Liquefied petroleum
C
Which of the following allows a stationary fire pump to start automatically whenever the fire suppression system it supplies operates, and to stop automatically? (536)
A. Lock switch
B. Pump differential
C. Fire pump gauge
D. Fire pump controller
D
When the pump driver is an electric motor, the pressure at which the pressure switch is set to start the fire pump must be: (537)
A. a constant that never changes.
B. lower than the pressure in the system.
C. higher than the pressure in the system.
D. the same as the pressure in the system.
B
Which controller monitors and contains alarms for conditions such as low engine oil pressure and high engine coolant temperature? (537)
A. Diesel engine controller
B. Electric motor controller
C. Steam turbine controller
D. Liquefied petroleum controller
A
Who is responsible for ensuring that the inspection, testing, and maintenance requirements of NFPA® 25 for water-based fire suppression systems are performed? (538)
A. Fire chief
B. Private inspector
C. Owner or occupant
D. Local building organization chair
C
During which phase must the contractor submit any changes, alterations, or substitutions for review and approval as meeting or exceeding the original water-based fire suppression system design? (540)
A. Plans review
B. Acceptance testing
C. Routine inspections
D. Preacceptance inspections
D
Which of the following actions is performed on all water-based fire extinguishing systems when the installation is complete? (540)
A. Plans review
B. Acceptance testing
C. Routine inspection
D. Preacceptance inspection
B
What must an inspector do before performing any fire suppression system inspection? (545)
A. Place a notice in the local paper
B. Obtain an administrative warrant
C. Wait until the business is unoccupied
D. Obtain permission from the owner/occupant
D
Which valve is used to shut off the water supply to the fire suppression system when it is necessary to replace sprinklers or to perform other maintenance? (546)
A. Main check valve
B. Indicating control valve
C. Primary inspection valve
D. Nonindicating control valve
B
What is the primary purpose of the fire suppression sprinkler system riser main drain? (548)
A. Allow water to continually leak from the system
B. Prevent water from backflowing into the potable water
C. Drain water from the system for maintenance purposes
D. Allow sprinklers to discharge as much water as possible
C
The inspector should inspect the fire suppression sprinkler cabinet located near the waterflow control valve to verify that the: (551)
A. sprinkler cabinet is locked and not accessible.
B. required number of replacement sprinklers is available.
C. required documentation and receipts are in the cabinet.
D. supplementary portable extinguishers are in the cabinet.
B
In fire suppression sprinkler systems designed for one- and two-family dwellings, the water supply source: (552)
A. is generally a water tank on premises.
B. must have both a primary and secondary supply.
C. is generally the same as the domestic water supply.
D. must be a separate source from the domestic water supply
C
How often should building management personnel make a visual inspection of standpipe and hose fire suppression systems? (555)
A. At least once a day
B. At least once a week
C. At least once a month
D. At least once every six months
C
For standpipe and hose fire suppression systems, all water supply valves must be: (556)
A. locked in the open position.
B. locked in the closed position.
C. unlocked in the open position.
D. unlocked in the closed position.
A
Verifying that the required testing and maintenance are complete and that the required records are in order for fire protection systems and equipment is the responsibility of the: (538)
A. owner or occupant.
B. building maintenance head.
C. authority having jurisdiction (AHJ).
D. equipment manufacturer representative.
C
During which phase will an inspector determine if the proposed fire suppression system is appropriate for the type of occupancy, hazard, and construction type? (539)
A. Plans review
B. Acceptance testing
C. Routine inspections
D. Preacceptance inspections
A
During which phase will an inspector compare the components of a system to those shown on the plans or listed in the construction documents? (540)
A. Plans review
B. Acceptance testing
C. Routine inspections
D. Preacceptance inspections
D
Ensuring correct hanger spacing is essential when inspecting fire protection systems to: (540)
A. prevent false activation of the system.
B. avoid unsightly installation equipment.
C. prevent damage to the system during operation.
D. allow fire department personnel to work on the system.
C
Acceptance testing of water-based fire extinguishing systems is MOST likely performed by: (540)
A. the fire chief.
B. an Inspector II.
C. the owner/occupant.
D. the installation contractor.
D
Ensuring that routine inspections and testing are performed on water-based fire extinguishing systems and that accurate records are maintained is the responsibility of: (540)
A. the fire chief.
B. the inspector.
C. the owner/operator.
D. local building organization staff.
C
Reviewing records and witnessing inspections and tests is MOST likely the responsibility of: (540)
A. the inspector.
B. insurance adjusters.
C. the owner/operator.
D. local building organization staff.
A
Which NFPA® standard contains specific inspection and testing requirements for water-based fire suppression sytems? (546)
A. NFPA® 12
B. NFPA® 13
C. NFPA® 25
D. NFPA® 1041
C
Generally, an inspector begins an inspection of a water-based fire suppression system in the: (546)
A. basement.
B. system riser room.
C. uppermost building floor.
D. main entry of the building.
B
An inspector should first verify that all valves controlling water supplies to the sprinkler system and within the system (sectional valves) are: (546)
A. open at all times.
B. closed at all times.
C. half opened and half closed.
D. left in a partially open position.
A
The indicating control valve should be examined to verify that it is: (546)
A. opened fully and secured.
B. closed entirely and secured.
C. opened and freely accessible.
D. left in a partially open position.
A
The indicating control valve should be examined to verify that it is: (546)
A. opened fully and secured.
B. closed entirely and secured.
C. opened and freely accessible.
D. left in a partially open position.
A
Which of the following steps should an inspector do first when performing a main drain test? (548)
A. Observe and record the final static pressure
B. Have a building representative fully open the main drain
C. Have the building representative close the 2-inch (50 mm) main drain slowly
D. Observe and record the pressure on the system side gauge at the system riser
D
During an inspection of a dry-pipe sprinkler system, what should inspectors do if they note excessive air pressure? (550)
A. They should have the system drained
B. Immediately tag the system and take it out of service
C. Do nothing; excessive air pressure is a common occurrence
D. Record the air pressure and compare during next inspection
A
Which of the following statements about the alarm trip test is the MOST accurate? (550)
A. The inspector generally performs the test.
B. The inspector never performs this test due to liability issues.
C. The inspector only performs the test if asked by the owner/occupant.
D. This test is only completed during the acceptance phase by the manufacturer’s representative.
B
What should be done if an automatic sprinkler system is found to have corrosion? (551)
A. It should be cleaned.
B. It should be replaced.
C. It should be tagged but left in place.
D. Nothing, as this will not impact its operation.
B
In an automatic sprinkler system, distortion of a material caused by the repeated heating of a fusible link to near its operating temperature is referred to as: (552)
A. cold flow.
B. laminar flow.
C. temperature damage.
D. linear heat displacement.
A
Which of the following statements about automatic fire suppression sprinklers is MOST accurate? (553)
A. Residential sprinklers and standard sprinklers operate at the same speed.
B. Residential sprinklers operate more slowly than standard sprinklers.
C. Residential sprinklers operate more quickly than standard sprinklers.
D. Residential sprinklers may operate more quickly or slowly than standard sprinklers.
C
From which of the following areas would automatic fire suppression sprinklers MOST likely be omitted? (554)
A. Bedrooms
B. Kitchen areas
C. Entrance hallways
D. Home office areas
C
When inspecting a water-spray fixed fire suppression sprinkler system, the inspector should verify that all waterflow control valves are in the: (555)
A. locked and open position.
B. locked and closed position.
C. unlocked and open position.
D. unlocked and closed position.
A
When inspecting a water-spray fixed fire suppression sprinkler system, the inspector should verify that the system’s response time is: (555)
A. less than 60 seconds.
B. less than 40 seconds.
C. between 40 and 60 seconds.
D. between 60 and 90 seconds.
B
With a foam-water fire suppression sprinkler system, the valves: (555)
A. must be open.
B. must be closed.
C. should be partially open or closed.
D. may be in the open or closed position.
D
For which foam-water system proportioner should the inspector verify that the ball drip valves are open and operable and that no corrosion is present on the foam concentrate storage tanks? (555)
A. Line proportioner
B. Bladder tank proportioner
C. Standard pressure proportioner
D. Inline balanced-pressure proportioner
C
For which foam-water system proportioner should the inspector look for the presence of foam in the water around the bladder? (555)
A. Line proportioner
B. Bladder tank proportioner
C. Standard pressure proportioner
D. Inline balanced-pressure proportioner
B
Building management personnel should make a visual inspection of standpipe and hose fire suppression systems at least once: (555)
A. a month.
B. every quarter.
C. every six months.
D. every year
A
Discharge outlets in dry fire suppression systems should be: (556)
A. closed.
B. opened.
C. either opened or closed.
D. partially closed or partially opened.
A
How often must dry-pipe fire suppression systems be hydrostatically tested? (557)
A. Every year
B. Every three years
C. Every five years
D. Every ten years
C
The recommended inspection frequency for stationary fire pump operation is: (557)
A. daily.
B. weekly.
C. monthly.
D. annually.
B
When inspecting stationary fire pumps, which test is used to check for obstructions? (557)
A. Flow test
B. Main drain test
C. Check valve test
D. Panel control test
A
