231 Questions
What is the primary function of fire extinguishers and fire hoses in industrial sites?
To put out fires
Why is it important to know which type of fire extinguisher to use on a particular fire?
Because using the wrong extinguisher can make the fire worse
What is the primary purpose of sprinklers in industrial sites?
To operate automatically
What is the main challenge when using fire extinguishers?
Knowing which type of fire extinguisher to use
What is Class K fire extinguisher used for?
Responding to kitchen grease fires
What is the importance of first responders being familiar with different types of fires and extinguishers?
To respond to fires effectively
What is the function of the aspirating nozzle in AFFF extinguishers?
To induce air into the water/agent solution
When using a dry powder extinguisher on a flammable liquid fire, what should you avoid doing?
Scattering the fire
In what type of fire should the discharge of AFFF be directed against the back wall of the tank?
Flammable liquid fire of a depth more than 6 mm
How should the dry chemical agent be applied to a fire using a dry powder extinguisher?
So that it covers the fire and provides a smothering blanket
What is the purpose of the puncture lever in a dry chemical extinguisher?
To release the expellant gas
What should you do after applying the dry powder agent to a fire?
Leave the fire undisturbed until it has cooled
What is the primary purpose of standpipes in buildings taller than three stories?
To help firefighters with pressure loss in their hoses
What is the acronym for the instructions on using fire extinguishers?
PASS
What type of fire extinguisher is suitable for water-soluble flammable liquids?
Aqueous Film Forming Foam (AFFF) Type
What is the pressure range of a stored-pressure extinguisher?
600 to 900 kPa
How are stored-pressure extinguishers recharged?
Through a Schrader valve
What type of fire extinguisher is commonly used in kitchens?
Type K
What is the purpose of the ring pin on a fire extinguisher?
To lock the operating lever
What is the primary disadvantage of the floor-standing pump type fire extinguisher?
Pumping must stop to move the unit.
What is the correct sequence of steps to operate an extinguisher?
- Set it on the ground, 2. Move the unit, 3. Hold the hose, 4. Squeeze the handle
What is the typical capacity of a backpack pump type fire extinguisher?
10 litres
What type of fire pump is covered in this chapter?
Stationary Fire Pump
How does the Self-Expelling CO2 fire extinguisher work?
The CO2 displaces oxygen in the vicinity of the fire.
What is the purpose of a fire pump operation and inspection?
To ensure fire pumps are ready when needed
What is the purpose of the siphon tube in a CO2 fire extinguisher?
To ensure only liquid CO2 reaches the discharge horn
Why should the discharge horn be avoided during operation of a CO2 fire extinguisher?
It is likely to be very cold.
What is the recommended method for extinguishing flammable liquid fires using a CO2 fire extinguisher?
Sweeping from the side of the fire towards the back.
What is the advantage of using Halotron I Clean Agent for electrical equipment fires?
It does not conduct electricity and is not corrosive.
What is the range of the Halotron I Clean Agent extinguisher?
1.8 – 13.7 metres
What type of gas is used in a cartridge or cylinder operated dry chemical extinguisher?
Carbon dioxide or nitrogen
What is the purpose of the valve in a CO2 fire extinguisher?
To release the CO2 agent
What is the primary purpose of fire extinguishers and fire hoses in industrial sites?
To put out fires in their early stages
What is the main challenge when using fire extinguishers?
Selecting the correct type of extinguisher
Why is it important for first responders to be familiar with different types of fires and extinguishers?
To use the correct extinguisher for the type of fire
What happens when the wrong type of fire extinguisher is used on a fire?
The fire will be made worse
What is the primary purpose of fire regulations in industrial sites?
To ensure fire extinguishers are readily available
What type of fire extinguisher is commonly used for small fires in contained areas?
Fire extinguisher
What is the purpose of inducing air into the water/agent solution in AFFF extinguishers?
To create a foam that can effectively smother the fire
When using a dry powder extinguisher on a flammable liquid fire, what is the recommended method of application?
Bouncing the powder off the floor just in front of the burning area
What is the purpose of moving around the fire while directing the foam stream in AFFF extinguishers?
To provide maximum coverage of the burning surface
Why should the discharge of AFFF be directed against the back wall of the tank in deep-seated fires?
To allow the natural spread of the foam back over the burning liquid
What should be done after applying the dry powder agent to a fire?
Leave the fire undisturbed until it has cooled
What is the purpose of controlling the rate of flow of dry chemical agent in dry chemical extinguishers?
To ensure the agent is applied at the correct rate to effectively extinguish the fire
What is the primary limitation of the backpack pump type fire extinguisher?
The force, range, and duration of water flow depend on the operator
What is the purpose of the valve in the CO2 fire extinguisher?
To release the extinguishing agent
How does the Halotron I Clean Agent extinguisher work?
It discharges as a rapidly evaporating liquid
What is the primary advantage of the Halotron I Clean Agent extinguisher?
It is not corrosive and does not conduct electricity
What is the disadvantage of using the overhead application method for flammable liquid fires?
It is not suitable for large pool of oil fires
What is the primary function of the siphon tube in the CO2 fire extinguisher?
To extend from the valve to almost the bottom of the cylinder
What is the primary characteristic of the trombone handle in the backpack pump type fire extinguisher?
It is used to pressurize the line and force the water out onto the fire
What is the primary function of the air pressure valve in a stored-pressure extinguisher?
To monitor pressure levels
What is the primary difference between the floor-standing pump type and the backpack pump type fire extinguishers?
The principle of operation is different
What is the primary purpose of the operating lever in the CO2 fire extinguisher?
To release the agent
What is the main advantage of the disposable shell type of stored-pressure extinguisher?
It eliminates the need for recharging
What is the purpose of the hinged footrest in floor-standing pump tanks?
To prevent the tank from moving around as it empties
What is the primary characteristic of the Self-Expelling CO2 fire extinguisher?
The extinguishing agent is also the pressurizing agent
What is the primary difference between the two types of AFFF extinguishers?
One type has a liquid solution and the other has a solid charge
What is the purpose of the Schrader valve on a stored-pressure extinguisher?
To allow for easy recharging
What is the primary advantage of combination systems for standpipes and sprinkler systems?
They provide better firefighting capabilities
What is the correct way to hold the handle of a fire extinguisher when operating it?
Hold it loosely in one hand
What is the purpose of the cap or head assembly in a stored-pressure extinguisher?
To contain the agent and expellant gas
Why is it important to sweep the nozzle of a fire extinguisher back and forth when operating it?
To provide a wider spray pattern
What is the primary purpose of stationary fire pump operation and inspection?
To ensure fire pumps are ready when needed
What is the main purpose of inspecting fire extinguishers?
To determine if the extinguisher is easily accessible and ready for operation
What should be done monthly to prevent settling of dry chemical extinguishers?
Hold the extinguisher upside down for a few seconds and shake slightly
What is one of the things that should be checked during a fire extinguisher inspection?
The weight of the extinguisher to confirm it is full
Why is it important to ensure the pin is in place and secured with an intact seal during an inspection?
To prevent accidental activation of the extinguisher
What is the purpose of checking the gauges during a fire extinguisher inspection?
To check the pressure of the extinguisher
What is one of the things that should be checked to ensure the extinguisher is in good condition during an inspection?
The hose, nozzle, and the extinguisher itself
What is the recommended approach to fighting a fire in a building?
Fighting the fire from below
What is the purpose of stairwell pressurization fans in newer buildings?
To minimize the chimney effect
What type of hoses are used in Class I standpipe systems?
65 mm (2.5 inches) hoses
Where are standpipe risers usually located in a building?
In non-combustible, fire-rated stairwells
What is the primary purpose of a deluge valve in a fire suppression system?
To electrically open the valve and admit water into the piping
What is the purpose of dividing a building into fire zones?
To prevent fire from spreading for a specified period of time
What type of facilities are deluge valve systems commonly used in?
Facilities that contain combustible or flammable liquids
What is the purpose of using a deluge valve system to keep windows cool during a fire?
To prevent the windows from breaking
What is the maximum distance from a nozzle that all places in a building zone should be?
9 metres
What is the primary difference between Class I and Class II standpipe systems?
The size of the hoses used
What type of fire suppression systems are used in kitchens?
Kitchen fire suppression systems
What is the purpose of CO2 extinguishing systems?
To smother a fire by flooding the area
What is the purpose of having at least one 65 mm hose connection on the roof for each standpipe?
To provide valuable information to responding firefighters
How many basic standpipe systems are defined by NFPA 14?
7
What is the primary difference between deluge valve systems and other specialized automatic fire suppression systems?
The type of fire they are designed to extinguish
What is the purpose of fire separations or zones within a building or plant?
To prevent fire from spreading for a specified period of time
What is the primary function of a standpipe system in a building?
To provide an immediate source of water for firefighting
What is the difference between a wet pipe and a dry pipe sprinkler system?
Wet pipe systems contain water under pressure, while dry pipe systems do not
What is the purpose of a 'Y' connection in a standpipe system?
To allow for two sources of water supply to the system
What is the primary difference between a manual dry standpipe and a manual wet standpipe system?
One contains water at all times, while the other does not
What is the purpose of the liquid bulb in a sprinkler head?
To hold the valve mechanism shut
What is the primary advantage of a wet pipe sprinkler system?
It is easier to design and maintain
What is the purpose of the NFPA 13 standard?
To provide guidelines for the design and installation of sprinkler systems
What is the primary characteristic of a semi-automatic dry standpipe system?
It has a control device that must be activated before the valve opens
What is the purpose of a combined standpipe system?
To supply water to both the hose connections and an automatic sprinkler system
What is the primary difference between a preaction and a deluge sprinkler system?
One is activated by heat, while the other is activated by an electric signal
Why is it necessary to perform a complete maintenance check on a fire extinguisher after an inspection indicates tampering, leakage, or physical damage?
To re-pressurize the extinguisher and replace defective parts
What is the purpose of performing a hydrostatic test on a fire extinguisher?
To inspect the extinguisher's shell or cylinder for damage
Why is it advisable to discharge portable fire extinguishers before sending them for maintenance?
To allow personnel to practice using the extinguisher
What is the purpose of a standpipe system in buildings taller than three stories?
To provide a means for firefighters to fight fires on upper floors
Why is it important to stagger the maintenance schedule for fire extinguishers?
To ensure that no area is left without a fire extinguisher
What is the recommended frequency for performing hydrostatic testing on most fire extinguishers?
Every 5 years
What is the purpose of annual fire practices in facilities with many employees?
To provide hands-on training with fire extinguishers
What is the minimum diameter requirement for a standpipe that supplies water to a sprinkler system?
DN 150 (6” NPS)
Why is it important to contract out maintenance work to certified service companies?
To ensure the maintenance is done correctly
What is the purpose of emptying stored-pressure extinguishers every 6 years?
To subject the extinguisher to applicable maintenance procedures
What is the primary purpose of dry pipe sprinkler systems?
To prevent water from freezing in pipes
What is the function of the small air compressor in dry pipe sprinkler systems?
To maintain system air pressure
What is the difference between single-interlock and non-interlock preaction systems?
Non-interlock systems allow water into the sprinkler piping with either operation of the detection device or the activation of an automatic sprinkler head
What is the primary purpose of deluge sprinkler systems?
To deliver large amounts of water using non-automatic sprinkler heads
What is the function of the preaction valve in preaction systems?
To charge the sprinkler line with water
What type of applications are preaction systems typically found in?
Museums, computer rooms, or telecommunications facilities
What is the primary difference between single-interlock and double-interlock preaction systems?
Double-interlock systems require both the detection device and an automatic sprinkler head to be activated
What is the purpose of the supplemental detection system in preaction systems?
To electrically open the preaction valve
What is the primary advantage of deluge sprinkler systems?
They can deliver large amounts of water quickly
What is the purpose of the dry pipe valve in dry pipe sprinkler systems?
To hold the water supply valve closed
What is the primary purpose of the monthly inspection of dry chemical extinguishers?
To prevent the products inside from settling on the bottom
What should an inspection of a fire extinguisher determine?
That the extinguisher is easily accessible and in its designated place
What is the importance of checking the gauge on a fire extinguisher during an inspection?
To check the operating pressure of the extinguisher
What is the consequence of not performing regular inspections on fire extinguishers?
The extinguisher may not function effectively when needed
What is the purpose of the pin on a fire extinguisher?
To prevent the extinguisher from being activated
What should be checked during an inspection to ensure the fire extinguisher is ready for operation?
The hose, nozzle, and extinguisher itself are all in good condition
What is the primary purpose of a standpipe system in a building?
To provide a source of water for manual firefighting
What is the advantage of using a wet pipe sprinkler system?
It is easier to design and maintain
What is the purpose of a 'Y' connection in a standpipe system?
To allow two sources to feed the standpipe system from the exterior
What is the primary difference between a wet pipe and a dry pipe sprinkler system?
The presence of water in the pipes
What is the purpose of a fusible link in a sprinkler head?
To hold a valve mechanism shut
What is the primary purpose of the NFPA 13 standard?
To provide guidelines for the design and installation of sprinkler systems
What is the primary difference between a manual dry standpipe and a manual wet standpipe?
The presence of water in the pipes
What is the purpose of a ceiling-mounted fusible link sprinkler head?
To release water at a predetermined temperature
What is the primary purpose of a combined standpipe system?
To supply water to both a sprinkler system and hose connections
What is the purpose of the liquid bulb in a sprinkler head?
To release water at a predetermined temperature
What is the primary reason for performing a hydrostatic test on a fire extinguisher shell?
To detect any weaknesses or defects in the shell
Why is it essential to stagger the maintenance schedule for fire extinguishers?
To prevent areas from being left without an extinguisher
What is the primary purpose of annual fire practices in facilities with many employees?
To provide hands-on training with various types of fire extinguishers
What is the primary advantage of contracting out maintenance work to certified service companies?
To ensure compliance with building and fire codes
What is the primary reason for discharging portable fire extinguishers before sending them for maintenance?
To empty the extinguisher and replace the agent
What is the minimum diameter requirement for a standpipe that supplies water to a sprinkler system?
DN 150 (6” NPS)
What is the primary purpose of a standpipe system in buildings taller than three stories?
To allow firefighters to fight fires from a higher level
What is the primary reason for performing maintenance checks on fire extinguishers after each use?
To detect any damage or defects caused by the previous use
What is the primary purpose of annual fire extinguisher certification?
To ensure compliance with building and fire codes
What is the primary reason for not sending all fire extinguishers for maintenance at the same time?
To prevent areas from being left without an extinguisher
What is a major consideration when fighting a fire from a standpipe system?
The flow capacity of the hoses
What is the primary purpose of fire zones in a building or plant?
To prevent fire from spreading for a specified period of time
What is the significance of the 6-metre and 9-metre distances in standpipe systems?
They are the maximum distances from the hose station to the nozzle
Why is it not recommended to fight a fire from above?
Because heat and smoke rise
What is the primary advantage of Class III standpipe systems?
They combine Class I and Class II hose fittings
What is the purpose of the stairwell pressurization fans in newer buildings?
To keep the stairwell exits clear of smoke
What is the significance of the 40 mm and 65 mm hose connections in standpipe systems?
They are used for different types of hoses
What is the primary purpose of the standpipe risers in a building?
To distribute the firefighting water supply throughout the building
What is the significance of the local authority in the installation and use of fire systems?
They govern the fire acts, codes, and regulations
What is the primary purpose of the fire zones in a building or plant?
To prevent fire from spreading for a specified period of time
What is the primary purpose of the air pressure in dry pipe sprinkler systems?
To hold the dry pipe valve closed
What is the difference between single-interlock and non-interlock preaction systems?
The timing of water admission into the system
What is the primary characteristic of deluge sprinkler systems?
They use non-automatic sprinkler heads that are always fully open
What is the purpose of the small air compressor in dry pipe sprinkler systems?
To maintain the system air pressure
What is the primary advantage of preaction systems?
They are less prone to water damage
What is the primary difference between dry pipe and wet pipe sprinkler systems?
The presence of air pressure in the system
What is the purpose of the supplemental detection system in preaction systems?
To detect fires
What is the primary characteristic of double-interlock preaction systems?
They require both the detection device and an automatic sprinkler head to be activated
What is the primary purpose of deluge valve systems?
To deliver large amounts of water quickly
What is the primary difference between preaction and deluge systems?
The timing of water admission into the system
What is the primary function of a deluge valve in a fire suppression system?
To electrically open and admit water into the sprinkler system piping
What is the purpose of the manual activation lever in a deluge valve system?
To allow for manual override of the system
Which type of system is used to keep windows that separate building sections cool during a fire?
Deluge valve system
What is the purpose of specialized automatic fire suppression systems that operate similar to sprinkler systems?
To protect specific areas or equipment from fire
What is the primary advantage of using a deluge valve system over other types of fire suppression systems?
They are more effective in extinguishing fires
According to the NFPA 25 standard, what is the recommended frequency for testing fire sprinkler systems?
Annually
What is the purpose of conducting fire pump tests in a fire sprinkler system?
To check the operation of the driver
What is the purpose of testing water flows in a fire sprinkler system?
To ensure they are adequate to supply all the sprinklers if they are activated in a large fire
What is the purpose of keeping written records of all the tests in a fire sprinkler system?
To maintain a record of system performance and identify areas for improvement
What is the purpose of activating the wet, dry, preaction, and deluge valves in a fire sprinkler system?
To inspect the system components
Why is it important to test fire sprinkler systems regularly?
To ensure the system is functioning properly when needed
What is the purpose of a jockey pump in a fire system?
To maintain system pressure above the starting pressure of the fire pump
What is the typical duration of a flow test for a fire pump?
1 hour
What is the primary purpose of annual flow tests for fire pumps?
To meet manufacturer's specifications
What is the consequence of a jockey pump cycling too frequently?
There is a significant leak in the fire system
What is the purpose of recording the results of a flow test in a log book?
To document the test for certification
What is the purpose of fire pumps in a fire system?
To start upon loss of standpipe or sprinkler system pressure
What is the purpose of daily and weekly checks?
To inspect equipment for cleanliness and rusting
What is the significance of checking the air pressure in dry standpipe systems?
To maintain the proper air pressure for operation
Why are fire pumps installed in certain facilities?
To meet the water volume requirements of the facility
What is the purpose of the check valves in fire pump discharge piping?
To prevent water from flowing back into the pump
What is the difference between monthly and weekly checks?
Monthly checks include additional tasks
What is the purpose of annual checks?
To perform a complete inspection and testing of all devices connected to the fire alarm system
What is the purpose of a full flow test on sprinklers and standpipes?
To test the flow of water in the system
What is the purpose of draining the low points of a dry system?
To prevent water from accumulating in the system
What is the purpose of a hydrostatic test of sprinklers and standpipes?
To verify the system's ability to withstand pressure
Why is it important to ensure that fire pumps meet certification requirements?
To ensure that the pump is reliable and safe
What is the primary reason for a fire pump to start automatically?
Due to a drop in pressure in the standpipe system
What should operators check shortly after the fire pump starts?
Suction and discharge pressures, packing gland leakage, and abnormal sounds and leaks
What is the purpose of a timer in some fire pump installations?
To prevent frequent starts and stops
What should be verified when the fire pump is not running?
The fire pump inlet water pressure, and that all required inlet and outlet valves are locked open
Why is it necessary to notify monitoring agencies when testing a fire pump?
To notify them of the dates and times when testing is to be done
What is typically done during pump testing?
A drain valve in the sprinkler system is opened to simulate water use
What is checked during pump testing?
Suction and discharge pressures, and the pump packing glands for leakage
How often is fire pump testing mandated by NFPA 25?
Weekly, monthly, quarterly, and annually
What is the purpose of a flow switch in a fire pump system?
To activate an alarm when there is a high fire water flow
What is the purpose of keeping a regular log of the hours a diesel driver has been running?
To keep track of the hours the pump has been running for maintenance purposes
What is the primary purpose of testing water flows in fire sprinkler systems?
To ensure the water supply is adequate to supply all the sprinklers if activated
What is the recommended frequency for conducting fire pump tests in most plants?
Weekly or monthly
What is the purpose of activating the wet, dry, preaction, and deluge valves during fire sprinkler system inspections?
To check the operation of the flow switches
Why is it essential to keep written records of all the tests conducted on fire sprinkler systems?
To provide evidence of regular maintenance
What is the primary purpose of quarterly or yearly tests in fire sprinkler systems?
To ensure the water supply is adequate to supply all the sprinklers
What is the recommended frequency for inspecting and testing fire sprinkler systems?
Annually
What is the primary purpose of a jockey pump in a wet fire protection system?
To maintain system pressure above the starting pressure of the fire pump
What is the recommended frequency for testing fire pumps under no-flow and 150% rated capacity?
Annually, by a certified agency
What is the primary function of a flow switch in a fire pump system?
To detect the flow of water in the fire pump system
What is the purpose of recording the engine oil pressure, engine RPM, water and oil temperatures, and fuel oil pressure during a fire pump test?
To ensure the fire pump is operating within the recommended specifications
What is the primary purpose of a pressure-sensitive switch in a fire pump system?
To start the fire pump when the system pressure drops
What is the primary requirement for pump drivers, auxiliary equipment, fuel storage systems, and associated electrical equipment in fire pump systems?
They must meet federal, provincial, and territorial regulations
What is the primary reason for a fire pump to start automatically?
To restore pressure in the standpipe system
What is the purpose of a flow switch in a fire pump system?
To activate an alarm when there is a high fire water flow
What is the recommended procedure to follow when shutting down a fire pump?
Shut down the pump manually to ensure it keeps running for a certain length of time
What is the purpose of checking the fuel supply for an internal combustion engine?
To ensure the fuel supply is ready to be delivered to the engine when required
What is the purpose of logging the hours a diesel driver has been running?
To keep a record of the pump's operation
What is the purpose of notifying the monitoring agency before testing the fire pump?
To prevent false alarms
What is the purpose of checking the engine coolant level?
To prevent the engine from overheating
What is the purpose of a timer in some fire pump installations?
To ensure the pump runs for a certain length of time
What is the purpose of verifying the breaker for an electrically driven fire pump?
To ensure the breaker is energized and in auto
What is the purpose of checking the fire pump inlet water pressure?
To check the suction and discharge pressures
During daily and weekly checks, what is one of the things that should be inspected to verify it is operating properly?
Alarm panels connected to the fire suppression systems
What is the purpose of draining the low points of a dry system, particularly before cold season?
To prevent water from freezing in the pipes
What is the primary purpose of calling in an authorized company to do an inspection and testing of all devices connected to the fire alarm system?
To inspect and test all devices connected to the fire alarm system
What is the purpose of installing fire pumps near the point of water supply to a facility?
To provide a reliable flow of water for fire hoses and sprinklers
What is one of the things that should be checked during a monthly inspection of fire equipment?
The proper air pressure is maintained on systems such as a dry standpipe
What is the purpose of a hydrostatic test of sprinklers and standpipes?
To test the system's ability to withstand pressure
What is the primary purpose of a dry testing trip in which the whole system is activated?
To verify that the system is able to start automatically and supply required pressure
What is the primary purpose of a wet system flow test?
To test the system's ability to supply water under actual firefighting conditions
What is the primary purpose of checking the visual monitoring of alarm panels connected to the sprinklers and standpipes?
To ensure that the alarm panels are operating properly
What is the primary purpose of checking the equipment is not stored in any manner that would affect the operation of sprinklers?
To verify that the equipment is not obstructing the operation of sprinklers
Test your knowledge on fire safety measures, including fire extinguishers, hoses, and sprinkler systems. Learn about the regulations and effectiveness of these tools in preventing and putting out fires. Assess your understanding of fire safety equipment and their applications.
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