IFSTA 7th Edition Chapter Test 11

IFSTA 7th Edition Chapter Test 11 Tactical ventilation is performed during fire attack to: (493) [4.3.11, 4.3.12] quickly extinguish a fully developed fire. help control the fire. limit the need for LDH hose streams. minimize personnel needed on scene. - ANSWER help control the fire. Why is ventilation used during overhaul and loss control? (493) [4.3.11, 4.3.12] To help control the fire Remove soot and odors from valuable contents Evacuate smoke from structures after a fire has been extinguished Eliminate the need for respiratory protection - ANSWER Evacuate smoke from structures after a fire has been extinguished When performing tactical ventilation, what action has the most impact on successful ventilation? (494) [4.3.11, 4.3.12] Removing fuel sources Exposure protection Activating sprinkler systems Controlling oxygen availability - ANSWER Controlling oxygen availability Which action may improve visibility inside structures so that interior crews can work more effectively? (494) [4.3.11, 4.3.12] Cooling the exterior of the building Exposure protection Controlling exhaust openings Increasing the number of personnel - ANSWER Controlling exhaust openings As a fire within a compartment consumes oxygen, the amount of unburned fuel in combustion products: (494) [4.3.11] may either increase or decrease. increases. stays the same. decreases. - ANSWER increases. Why should ventilation be immediately followed with exterior or interior fire attack to cool gases and surfaces in the fire room? (494) [4.3.11, 4.3.12] The ventilation crew is already in position to perform fire attack. The greater the time between ventilation and application of water, the greater the fire's growth. Ventilation will cause the fire to go into decay, making it easy to extinguish. Fire will enter ventilation-limited decay when water is applied. - ANSWER The greater the time between ventilation and application of water, the greater the fire's growth.