9.7 Highrise Ventilation Flashcards
What determines whether the Ventilation Sector Officer is Mobile or Static during an incident?
a) Personal preference
b) Incident Commander’s decision
c) Size and complexity of the incident
d) Time of day
C
How many Firefighters should be directed to check each stairwell in its entirety to determine smoke conditions?
a) One
b) Two
c) Three
d) Four
B
What is the Ventilation Sector Officer’s responsibility regarding stairwell doors during the investigation?
a) Ensure they are open on each floor
b) Check for obstructions in front of the doors
c) Ensure they are closed on each floor
d) Prop them open for ventilation
C
When should the Ventilation Sector Officer notify the Incident Commander of smoke conditions?
a) Only if conditions worsen
b) Only if conditions improve
c) Immediately upon investigation
d) After the ventilation strategy is determined
C
What should the Ventilation Sector Officer do with the HVAC system if it is spreading smoke within the building?
a) Activate more zones
b) Shut it down manually
c) Increase fan speed
d) Redirect airflow to the fire area
B
What is the purpose of activating supply fans in HVAC zones that do not include the fire area?
a) Increase smoke spread
b) Limit the spread of smoke
c) Improve visibility
d) Facilitate firefighter access
B
When should Positive-Pressure Ventilation (PPV) be considered?
a) Only in small buildings
b) If building supply fans are unavailable
c) Regardless of the presence of building supply fans
d) Only when fire is on the top floor
C
What is the responsibility of the Ventilation Sector Officer regarding Entry Control?
a) Always remain mobile
b) Transfer all PITs to Entry Control
c) Stay static outside of the Controlled Area
d) Assign all crews to ventilation tasks
B
When should crews PIT in with the Ventilation Sector Officer or a dedicated Entry Control?
a) Only when visibility is poor
b) Whenever they enter the building
c) If the HVAC system is malfunctioning
d) After the ventilation strategy is determined
B
What must be determined before any action can be taken with the HVAC system?
a) Location of the Incident Commander
b) Status of fire suppression efforts
c) Firefighter PIT assignments
d) Floor where the fire is located
D
What are the two distinct phases of Ventilation Operations?
a) Smoke Prevention and Smoke Suppression
b) Smoke Containment and Smoke Removal
c) Smoke Evacuation and Smoke Pressurization
d) Smoke Detection and Smoke Mitigation
B
When should steps to contain smoke be undertaken?
a) After extinguishment of the fire
b) Before extinguishment of the fire
c) During fire investigation
d) When occupants request it
B
What is the primary purpose of pressurizing a stairwell during smoke containment?
a) To facilitate firefighter access
b) To create a chimney effect
c) To provide a safe egress for occupants and firefighters
d) To accelerate fire spread
C
Why is opening roof hatches in uncontaminated stairwells not recommended?
a) It accelerates smoke movement
b) It creates a chimney effect
c) It provides a safe egress for occupants
d) It enhances firefighter visibility
B
When are steps to remove smoke typically undertaken?
a) During extinguishment of the fire
b) After extinguishment of the fire
c) During fire investigation
d) Before firefighters arrive
B
