Tactical Ventilation
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show | D. Life safety, incident stabilization, property conservation
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131. Which of the following is a reason for performing tactical ventilation? A. Decreasing reliance on fire streams B. Decrease costs of fireground operations C. Reducing potential extreme fire behavior D. Reducing need for interior fire operations | show 🗑
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show | C. controlling and extinguishing the fire in stages.
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show | A. life safety.
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134. Which statement about tactical ventilation is MOST accurate? A. Tactical ventilation must be performed before fire attack. B. Tactical ventilation is implemented after the fire is confined. C. Tactical ventilation can be combined with fire attack to stabilize an incident. D. Tactical ventilation should not begin until the incident is stabilized. | show 🗑
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show | C. increases speed with which interior fires can be extinguished.
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show | A. Smaller lot sizes
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137. Which of the following is a characteristic of older structure construction? A. Smaller lot sizes B. Larger structure sizes C. Wall cavities filled with synthetic insulation D. Windows that could be opened for ventilation | show 🗑
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show | D. Use of plastics and other synthetic materials
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show | B. Energy efficient designs
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show | B. Smoke
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show | C. air flow.
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Air Flow | show 🗑
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142. In a structure fire, what part of the flow path is an open doorway? A. Inlet vent B. Outlet vent C. Lower vent D. Upper vent | show 🗑
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show | A. Heat
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144. Which fire behavior indicator provides visual indicators such as the size and location of the fire? A. Heat B. Smoke C. Flame D. Air flow | show 🗑
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145. The effect or lack of effect of fire streams indicates the size and extent of the fire when observing: A. heat. B. flame. C. smoke. D. air flow. | show 🗑
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146. Which of the following causes air flow? A. Combustion of interior finishings B. Introduction of oxygen into the burning materials C. Escape of gases and flames from burning materials D. Pressure differentials inside and outside compartment | show 🗑
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147. Which of the following factors determines the initial severity and extent of a fire? A. Adjacent exposures B. Number of responding units C. Availability of a water supply for suppression D. Activation of fire detection and suppression systems | show 🗑
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148. Which of the following factors is a primary reason that firefighters should not create tactical ventilation openings in an uncoordinated manner? A. Can spread fire to uninvolved areas B. May damage roof of structure by creating openings C. Can cause fire streams to have negative affect on fire D. Creating openings does unnecessary damage to the structure | show 🗑
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show | C. Incident Commander
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150. Which of the following factors have a bearing on deciding where to ventilate? A. Number of bystanders B. Cost of ventilation operations C. Availability of rehabilitation facilities D. Indications of potential structural collapse | show 🗑
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151. Which of the following weather conditions has the most influence on ventilation operations? A. Wind B. Precipitation C. Temperature D. Atmospheric pressure | show 🗑
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152. Ventilation that causes heat, smoke, and fire to be discharged through wall openings below the highest point of the building creates danger because: A. multiple ventilation points will be created from the openings. B. oxygen levels will be increased for the upper levels of the fire. C. fire streams will be unable to reach the higher levels of the fire. D. rising gases will ignite portions of the building above exhaust point. | show 🗑
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show | A. two firefighters.
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154. Cutting a hole in the roof above the fire or opening existing roof access doors, scuttles, or skylights are all examples of: A. inlet ventilation. B. outlet ventilation. C. vertical ventilation. D. horizontal ventilation. | show 🗑
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show | Fans used to push fresh air into a structure
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Smoke ejectors | show 🗑
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show | Any technique where heat, smoke and other products of combustion are channeled horizontally out of structure. (opening doors, windows, other openings)
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Vertical Ventilation | show 🗑
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Natural Ventilation | show 🗑
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show | Any mean other than natural ventilation. (blowers, fans, smoke ejectors, etc..)
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show | Ventilation by using a spray stream to draw smoke from as compartment through an exterior opening
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155. Opening doors or windows is an example of: A. natural ventilation. B. vertical ventilation. C. hydraulic ventilation. D. mechanical ventilation. | show 🗑
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show | B. fresh air
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show | A. fog
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158. Allowing natural air currents and pressure differences to move smoke and heat out of the building is natural: A. exhaust ventilation. B. vertical ventilation. C. hydraulic ventilation. D. horizontal ventilation. | show 🗑
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Leeward Side | show 🗑
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show | the side/direction the wind is blowing
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show | Intended and controlled exhaust locations that are created or improved at or near the fire to allow products of combustion to escape the building
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show | Technique of using smoke ejectors to develop artificial air flow and to pull smoke out of structure. smoke ejectors are placed in openings to pull gasses and eject them from building
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159. Which type of ventilation requires no additional personnel or equipment to set up and maintain? A. Vertical B. Hydraulic C. Natural horizontal D. Mechanical horizontal | show 🗑
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show | D. negative-pressure ventilation (NPV)
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161. Which side of an opening should a fan be placed for negative-pressure ventilation? A. Leeward B. Interior C. Exterior D. Windward | show 🗑
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162. When the natural flow of air currents and the currents created by the fire is insufficient to remove smoke, heat, and fire gases, what type of ventilation is necessary? A. Vertical B. Hydraulic C. Protected D. Mechanical | show 🗑
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163. Why must the open areas around a smoke ejector be properly sealed? A. To prevent expelling fire gases from the building. B. To prevent air from recirculating back into the building. C. To prevent smoke from being exhausted through the roof. D. To prevent overheating of the smoke ejector and causing a fire. | show 🗑
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Recirculation | show 🗑
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show | Method of ventilation by mechanically blowing air into a room or structure to create positive pressure forcing the contaminated atmosphere out an exit opening.
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164. Positive-pressure ventilation (PPV) exhaust openings vary with the size of the entry opening and the: A. capacity of hose lines. B. capacity of the blower used. C. number of personnel on site. D. number of compartments in the structure. | show 🗑
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165. Once an exhaust opening has been created, it is important that the cone of air from the blower: A. blows towards the fire. B. blows away from the fire. C. completely covers the doorway opening. D. completely blocks the doorway opening. | show 🗑
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166. When ventilating a multistory building, it is best to apply positive-pressure ventilation (PPV): A. on the floor with the least smoke. B. on the floor with the most smoke. C. at the highest point of the structure. D. at the lowest point of the structure. | show 🗑
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show | D. 85 to 90
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show | A. Fire intensity increases
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169. Which of the following is an advantage to using mechanical ventilation? A. Increases control of air flow B. Decreases control of air flow C. Speeds the removal of contaminants D. Increases availability of water supply | show 🗑
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170. Offensive vertical ventilation is intended to aid in reaching and: A. extinguishing the fire. B. stopping the spread of fire. C. containing the fire to one area of the structure. D. determining the effect on exposures to the fire. | show 🗑
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show | C. Sound the roof for structural integrity by striking with an axe.
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172. An inspection hole should be cut before cutting any type of ventilation hole in the roof in an attic or cockloft fire to: A. ensure roof is safe. B. ensure minimal secondary damage. C. determine the fire location and direction of travel. D. determine at least two means of egress from the roof. | show 🗑
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Kerf cut | show 🗑
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show | A. turn it off.
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174. Ensuring the only required openings for ventilation are made is the responsibility of the: A. company officer. B. incident commander. C. code enforcement officer. D. roof ventilation team leader. | show 🗑
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show | Rectangular exhaust opening cut in a roof, allowing a section of the roof deck to be tilted, thus creating an opening similar to a louver (also called rafter cut)
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175. Why may arched roofs prevent roof ladders from lying flat? A. Roof ladders too long. B. Curvature of the roof. C. Roof ladders too curved. D. Lack of curvature of the roof. | show 🗑
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176. What type of cut is used to create a fire break that stops the spread of fire in common attic structures or large structures? A. Trench cut B. Vertical cut C. Exhaust cut D. Offensive cut | show 🗑
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show | Defensive tactic that involves cutting an exhaust opening in the roof of a burning building, extending from one outside wall to the other, to create an opening at which a spreading fire may be cut off. (strip ventilation)
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show | C. 30 feet.
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178. If a trench cut is created improperly, it will place firefighters in the very dangerous position of working: A. behind the fire. B. ahead of the fire. C. on top of the fire. D. on plane with the fire. | show 🗑
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179. Which of the following is a factor that reduces effectiveness of vertical ventilation? A. Trench cuts too small B. Personnel working ahead of the fire C. Fire streams directed into ventilation openings D. Improper location of the horizontal ventilation opening | show 🗑
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show | B. through intense rising heat and smoke.
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show | C. More occupants
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Stack effect | show 🗑
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182. Which of the following occurs to heated smoke and fire gases when they stop rising, become cooled to the temperature of the surrounding air, and spread horizontally? A. Stratify B. Solidify C. Sounded D. Stabilization | show 🗑
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show | A. conduction184. The automatic closure of doors, petitions, windows, and HVAC systems are methods of:
A. compartmentalizing a structure.
B. confining fire operations personnel.
C. evacuating occupants of the structure.
D. verifying combustibles adjacent to the fire floor.
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show | Tendency of heat, smoke, and other products of combustion to rise until they encounter a horizontal obstruction. At this point the will speed laterally (ceiling jet) until they encounter vertical obstructions and begin to bank downward (hot gas layer development)
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show | A. compartmentalizing a structure.
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show | C. Where the alarm originated
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show | A. HVAC systems
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187. Operating built-in smoke control systems in a high-rise or a shopping mall with open atria should be the responsibility of: A. any security officer on duty. B. any firefighter on the scene. C. only code enforcement officers. D. only building engineers or maintenance superintendents. | show 🗑
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7. Air flow is the movement of air toward burning fuel and: (737) A. movement of smoke in to the compartment. B. movement of smoke out of the compartment. C. pressure differentials inside the compartment. D. pressure differentials outside the compartment. | show 🗑
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8. For vertical ventilation to be effective, a horizontal inlet opening at or below the level of the fire is needed to provide a flow path for: (742) A. flames to exit the structure. B. for smoke to enter the structure. C. for fresh air to exit the structure. D. for fresh air to enter the structure. | show 🗑
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9. Mechanical ventilation methods using fans, blowers, and smoke ejectors can be applied to horizontal and vertical ventilation, but is most often used for: (743) A. natural ventilation. B. vertical ventilation. C. hydraulic ventilation. D. horizontal ventilation. | show 🗑
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10. When conditions are appropriate, natural horizontal ventilation operations should work with existing atmospheric conditions, taking advantage of: (745) A. natural inlets. B. natural air flow. C. positive pressure. D. negative pressure. | show 🗑
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show | A. Positive-pressure ventilation
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show | A. blowers.
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13. Which of the following actions should firefighters do to determine the difference in feel of supported and unsupported areas of a roof? (754) A. Cut the roof B. Sound the roof C. Step on the roof D. Bounce an item off the roof | show 🗑
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14. Roofs that may fail early in a fire and are extremely dangerous to work under are roofs supported by: (754) A. heavy weight slate or tiles. B. lightweight composition shingles. C. lightweight or engineered trusses. D. heavy weight or mechanical trusses. | show 🗑
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15. HVAC equipment in windowless buildings may cause spread of smoke, heat, and fire unless specifically: (761) A. designed for this purpose. B. inspected for high occupancy. C. designed to cool building only. D. inspected prior to a fire occurring. | show 🗑
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show | -Life Safety
-Incident Stablization
-Property conservation
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17. What three indicators help determine fire behavior? (737) | show 🗑
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