Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What is tactical ventilation | show 🗑
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| When should tactical ventilation be performed | show 🗑
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| What must occur for a successful tactical ventilation | show 🗑
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| show | Reduce interior heat
Decrease rate of fire spread/extreme fire behavior
Improve visibility, efficiency, victim survival potential
Reduce smoke damage and property damage
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| show | Increase oxygen concentration
Reduce toxic products of combustion concentration
Reduce temperature
Increase visibility
Create smoke free egress paths
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| What factors should be considered when assessing the use of tactical ventilation | show 🗑
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| show | Visual impairment
Lack of oxygen
Presence of toxic gases
Presence of flammable gases
Possibility of rapid fire development
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| What building characteristics should be considered when assessing the use of tactical ventilation | show 🗑
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| show | Volume of smoke
Location of smoke
Smoke color, density, and pressure
Movement of smoke
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| show | Velocity
Turbulence
Direction
Movement of neutral plane
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| What is air flow caused by | show 🗑
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| What must be present in order for a flow path to be present | show 🗑
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| What is a flow path | show 🗑
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| What are some visual indicators to watch for from heat | show 🗑
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| show | Size and location of the fire
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| What are the different types of ventilation | show 🗑
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| show | Natural, mechanical, and hydraulic
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| What are some factors that effect where to ventilate | show 🗑
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| What factor should the means of tactical ventilation work with | show 🗑
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| show | Occupants
Contents
Uninvolved rooms/area of building
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| show | Ignite portions of the exterior building
Heat/gases drawn into openings
Ignite exposures
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| What are some things that external exposures can be affected by | show 🗑
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| What indicates the need to used mechanical or hydraulic ventilation | show 🗑
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| show | Buildings that fire has not involved attic/cockloft
Involved floors of multistory structures are below top floor
Building is weak and threat of collapse
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| Where should a fan be positioned for mechanical horizontal ventilation | show 🗑
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| What should be done when using a smoke ejector | show 🗑
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| show | Recirculate air by pushing smoke and heat back into openings
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| show | Keep the flow path as straight as possible
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| show | 4 to 6 feet
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| show | All of it
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| Where should positive pressure be applied when ventilating a multi story building | show 🗑
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| What is the main issues with PPV In above ground operations | show 🗑
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| What actions should be taken to ensure PPV is successful | show 🗑
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| show | Don’t have to enter IDLH
More efficient
Little effect on smoldering debris
Less cleaning/maintenance
PPV effective in all types of structures
Heat and smoke can be directed
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| What are some disadvantages of PPV | show 🗑
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| How is hydraulic ventilation performed | show 🗑
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| What are some disadvantages of hydraulic ventilation | show 🗑
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| What are some advantages of using mechanical ventilation | show 🗑
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| What can occur if improper mechanical advantage occurs | show 🗑
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| show | When ic determines the need, safety, and effectiveness
Considered age/type of building construction
Observed safety precautions
Identified escape routes
Selected pace to ventilate
Considered location, duration, and extent of fire
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| What risks are increased when vertical ventilation occurs | show 🗑
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| show | They can’t
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| show | Melting asphalt
Spongy roof
Smoke coming from roof
Fire coming from roof
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| What should happen before cutting a ventilation hole | show 🗑
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| show | Kerf cut and triangle/A cut
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| What is offensive ventilation | show 🗑
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| What are two critical points to remember when ventilating any roof | show 🗑
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| Where should flat roof openings be located | show 🗑
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| What cut is used when a truss is in the middle of an opening | show 🗑
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| Where should a ventilation opening be made on shingle covered pitched roofs | show 🗑
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| show | Remove tiles/slate and cut sub roof under it as a standard roof
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| show | Make a kerf cut to locate arches, observe truss space, determine fire involvement
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| show | On trusses or strong points
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| show | Defensive operation/ventilation
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| What does a trench cut create | show 🗑
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| Where should a trench cut be located | show 🗑
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| What should happen before a trench cut occurs | show 🗑
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| show | Heat and smoke escape allowing the trench cut to be made safely
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| What would happen if an offensive ventilation opening was not made before a trench cut is performed | show 🗑
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| How is a trench cut made | show 🗑
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| show | Improper use of mechanical ventilation
Indiscriminant window breaking
Fire stream directed into exhaust openings
Explosions
Burn through of structural components
Improper location of ventilation openings
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| How do you ventilate a basement with windows | show 🗑
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| What is the best practice to ventilate a basement without windows | show 🗑
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| show | Cut an opening in the floor near a ground level opening and use fans to push heat and smoke out of the building
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| show | Mechanical ventilation
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| show | Vertical exhaust opening isn’t large enough to exhaust smoke and gases
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| show | The stair well that penetrates the roof
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| How can a stairwell be used to ventilate a building | show 🗑
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Created by:
Kab731