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HFD Final Exam questions with complete solutions
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HFD Final Exam questions with complete solutions
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HFD Final Exam questions withcomplete solutions
What is Measures M? List the steps required to perform Measures M - correct answer ✔✔● Measures M
is a combination of controlled and coordinated vertical and horizontal ventilation. A flow of cool air is
introduced into the designated stairwell shaft at ground level. This pressurizes the shaft. Hot air rises,
cool air enters at lower sections.
1. Use the designated interior stairwell
2. Ensure position of doors/openings in structure are closed leading to affected area. You will open them
as required.
If using:
3.
a) Positive Pressure, "positive pressure fan" set up fan at exterior building door you are using and start
fan after approval from Incident Command. Try to use wind direction to your advantage
b) If naturally ventilating use wind direction to your advantage.
4. Open ground floor door to exterior.
5. Open door to floor you want ventilated.
6. Open door to unit/apartment.
7. Open door or window to exterior of building from unit/apartment.
How to you calculate/estimate a traditional collapse zone? - correct answer ✔✔Height of the building
multiplied by a factor or 1 ½.
As per Policy & Procedures, what is the procedure for the second arriving Pump/Engine
for High-Rise operations. - correct answer ✔✔Lay charged supply lines or soft suction from a hydrant to
the pump
● Check standpipe connections for obstructions
● Lay lines connected from the pump to standpipe and sprinkler systems and be prepared to instantly
charge them
● Connect to both outlets
, ● It is the responsibility of the apparatus crew supporting the
standpipe/sprinkler to ensure their apparatus has an adequate water supply
What are the 3 methods of Interior Fire Attack? - correct answer ✔✔Direct, indirect, combination
Describe an indirect attack method (structural) - correct answer ✔✔Indirect attack is a form of attack
when ff are unable to enter because of intense heat inside and attack made from outside the structure
or involved area.
Directing fog streams toward the ceiling of the compartment to make steam in order to cool. Converting
water into steam displaces O2, absorbs heat and cools hot gas layer enough that ff can make entry and
perform direct attack.
List/ describe 4 possible indicators of backdraft - correct answer ✔✔● Fire confined
● Optically dense smoke, light coloured or black becoming dense gray-yellow
● High velocity, turbulent smoke discharge, sometimes appears to pulse or breathe ● High heat, smoke
stained windows
● Little or no visible flame
Name the four (4) "Classes" of hydrants and include their
"Colour-coding" and "Flows in L/min'? - correct answer ✔✔Red- Class C- 1900 lpm
Orange - Class B - 1900 to 3780 lpm
Green - Class A - 3780 - 5675 lpm
Blue - Class AA - 5675+ lpm
Describe a primary search - correct answer ✔✔Rapid but thorough search to determine the location of
victims ● Performed either before or during fire suppression operations.
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