7-Ops-9.7 highrise ventilation Flashcards
According to the BFES operations Manual, What determines whether the Ventilation Sector Officer is mobile or static during an incident?**
a) Personal preference
b) Size and complexity of the incident
c) Availability of equipment
d) Incident Commander’s decision
B
The Ventilation Sector Officer may be Mobile or Static based upon the size and complexity of the incident.
According to the BFES operations Manual, How many firefighters should the Ventilation Sector Officer direct to each stairwell for smoke condition assessment?**
a) One (1)
b) Three (3)
c) Two (2)
d) Four (4)
C
* Direct at least two (2) Firefighters to each stairwell to determine smoke conditions. These Firefighters shall travel each stairwell in its entirety checking to ensure stairwell doors on each floor are closed and smoke conditions on each floor.
According to the BFES operations Manual, What is the primary purpose of directing firefighters to check stairwell doors on each floor?**
a) Ensure proper ventilation
b) Identify fire attack stairwells
c) Check for occupants
d) Ensure stairwell doors are closed
D
These Firefighters shall travel each stairwell in its entirety checking to ensure stairwell doors on each floor are closed and smoke conditions on each floor
According to the BFES operations Manual, When should the Ventilation Sector Officer notify the Incident Commander of smoke conditions?**
a) Only during the initial assessment
b) Only when smoke conditions worsen
c) At the start and in case of changes
d) when ever found
D
* Notify the Incident Commander of smoke conditions
According to the BFES operations Manual, In stairwell strategy, what actions should be taken regarding fire attack stairwells?**
a) Increase entry access
b) Remove Firefighters
c) Restrict entry or remove occupants
d) Activate HVAC systems
C
The Ventilation Sector Officer must identify the fire attack stairwell and evacuation stairwell. Attempts shall be made to restrict entry or remove occupants from fire attack stairwells. Ventilation strategies should be developed in conjunction with stairwell search and secure initiatives.
According to the BFES operations Manual, Before any HVAC system action, what information must the Ventilation Sector Officer obtain?**
a) Number of occupants
b) Location and extent of fire
c) Status of stairwell doors
d) Availability of ventilation fans
B
If the air handling system is spreading smoke within the building it should be manually shut down. The air handling system should remain operational if it is pressurizing uncontaminated areas or exhausting smoke from the fire area. After the fire floor has been accurately determined, ensure that all HVAC zones that do not include the fire area should have their supply fans activated. This should supply fresh outside air to these zones. Pressurizing these zones limits the spread of smoke.
According to the BFES operations Manual, When is it appropriate to manually shut down the air handling system?**
a) When it is pressurizing uncontaminated areas
b) When it is spreading smoke within the building
c) During the initial investigation
d) After smoke removal is complete
B
If the air handling system is spreading smoke within the building it should be manually shut down. The air handling system should remain operational if it is pressurizing uncontaminated areas or exhausting smoke from the fire area. After the fire floor has been accurately determined, ensure that all HVAC zones that do not include the fire area should have their supply fans activated. This should supply fresh outside air to these zones. Pressurizing these zones limits the spread of smoke.
According to the BFES operations Manual, What should be activated in HVAC zones that do not include the fire area?**
a) Exhaust fans
b) Supply fans
c) Emergency lights
d) Elevators
B
If the air handling system is spreading smoke within the building it should be manually shut down. The air handling system should remain operational if it is pressurizing uncontaminated areas or exhausting smoke from the fire area. After the fire floor has been accurately determined, ensure that all HVAC zones that do not include the fire area should have their supply fans activated. This should supply fresh outside air to these zones. Pressurizing these zones limits the spread of smoke.
According to the BFES operations Manual, If building supply fans are not available, what ventilation technique should be considered?**
a) Hydraulic Ventilation
b) Positive-Pressure Ventilation (PPV)
c) Smoke Containment
d) Exhaust Ventilation
B
If building supply fans are not activated or unavailable, then Positive-Pressure Ventilation (PPV) must be implemented by firefighters. Consideration may be given to pressurizing stairwells with BFES fans regardless of the presence of building supply fans.
According to the BFES operations Manual, Where should Personal Information Tags (PITs) be transferred if the Ventilation Sector Officer is mobile?**
a) Stairwell doors
b) Fire attack stairwells
c) Entry Control
d) HVAC control room
C
If the Ventilation Sector Officer is mobile, all PITs shall be transferred to Entry Control. If the Ventilation Sector Officer remains static outside of the Controlled Area, crews shall PIT in with Ventilation Sector Officer or a dedicated Entry Control.
According to the BFES operations Manual, During the Smoke Containment phase, what is the primary purpose of pressurizing a stairwell?**
a) Enhance firefighter visibility
b) Prevent smoke movement into the stairwell
c) Increase air circulation
d) Facilitate evacuation for occupants
B
Steps to contain smoke should be undertaken during extinguishment of the fire. Every effort should be made to prevent smoke from entering hallways and stairwells. Immediately pressurize a stairwell using the HVAC system or fans to:
* Provide a safe egress for Occupants
* Provide a safe egress for Firefighters
* Prevent smoke movement into the stairwell.
According to the BFES operations Manual, Why is opening roof hatches in uncontaminated stairwells discouraged?**
a) It enhances visibility
b) It causes a chimney effect
c) It aids smoke removal
d) It facilitates firefighter access
B
If the stairwell is contaminated ventilation becomes a high priority. DO NOT open roof hatches in uncontaminated stairwells; this can cause a chimney effect that draws smoke and heat into the stairwell
According to the BFES operations Manual, What is the recommended ventilation technique in High Rise buildings after extinguishment of the fire?**
a) Hydraulic Ventilation
b) Positive-Pressure Ventilation (PPV)
c) Exhaust Ventilation
d) Roof hatch ventilation
C
Fire in Unit and Smoke Contained to Floor of Origin
Using pressure established in the stairwell, open the applicable stairwell door and direct air flow through the corridor and through the unit of origin utilizing the failed or removed window(s) as exhaust opening(s).
According to the BFES operations Manual, How should Ventilation Sector personnel direct air flow through a unit when the fire is contained to that unit?**
a) Utilize roof hatches
b) Use hallway exhaust openings
c) Open stairwell doors
d) Close all windows
C
Fire in Unit and Smoke Contained to Floor of Origin
Using pressure established in the stairwell, open the applicable stairwell door and direct air flow through the corridor and through the unit of origin utilizing the failed or removed window(s) as exhaust opening(s).
According to the BFES operations Manual, In the case of a fire in a hallway, how should smoke be pushed out of the contaminated hallway?**
a) Through windows
b) Through HVAC systems
c) Into the evacuation stairwell
d) Into the opposite stairwell
D
Fire in a Hallway and Smoke Contained to Floor of Origin
Using pressure established in the stairwell, Ventilation Sector personnel should open the stairwell door and push smoke from the contaminated hallway into the opposite stairwell and out the corresponding roof hatch. This must be done in a well communicated and coordinated manner. The stairwells being contaminated by the ventilation process cannot be used for evacuation.
