IFSTA 7th Edition 2023 100% Verified Questions and Answers

When firefighters apply water to the hot gas layer in a compartment, it will: (670) [4.3.10] increase the potential for flashover. increase the radiant heat flux from the upper layer. reduce the radiant heat flux from the upper layer. push fire into adjacent rooms. - CORRECT ANS reduce the radiant heat flux from the upper layer. What can happen if excess steam is produced inside the structure as a result of applying water on the fire? (670) [4.3.10] Disruption of the thermal layering Increase in the potential for backdraft or flashover Transition from fuel-limited to ventilation-limited conditions Pyrolysis process speeds up - CORRECT ANS Disruption of the thermal layering In which situation would fuel removal be a likely method of extinguishment? (670) [4.3.19] Fire in an apartment building Fire in a one-story house Grass fire Warehouse fire - CORRECT ANS Grass fire Closing the valve on a natural gas tank to stop the emission of gaseous fuel would be an example of: (670) [4.310] fuel removal. oxygen exclusion. chemical flame inhibition. temperature reduction. - CORRECT ANS fuel removal. When a firefighter controls doors and windows during fire attack, it is an example of: (671) [4.310, 4.3.11] chemical flame inhibition. temperature reduction. fuel removal. oxygen exclusion. - CORRECT ANS oxygen exclusion. Clean agents extinguish fire by: (672) [4.3.10] removing oxygen from the compartment. removing the burning fuel. cooling the burning material. Interrupting the combustion reaction. - CORRECT ANS Interrupting the combustion reaction. If you are positioned to make fire attack, which condition would be important to communicate to your supervisor or the Incident Commander? (673) [4.3.10] Smoke that changes from gray to black All team members' PASS devices are functioning Amount of radiant heat felt by firefighters Presence of bystanders at the perimeter - CORRECT ANS Smoke that changes from gray to black Firefighters should ensure that PASS devices are on and operating properly: (673) [4.3.10] before entering the structure.