Question 752Deck Safety70% to pass
There are two disadvantages to CO2 as a firefighting agent. One of these is the limited quantity available, and the other is _______________.
AI Explanation
The correct answer is B) the lack of cooling effect on heated materials.
The reasoning is that while CO2 is an effective firefighting agent for Class B (flammable liquids) and Class C (electrical) fires, it has the disadvantage of not providing any cooling effect on heated materials. This means that while CO2 can effectively smother and extinguish a fire, it does not cool down the underlying materials that may still be hot enough to re-ignite the fire once the CO2 dissipates. This lack of cooling effect is a disadvantage compared to other firefighting agents like water that can provide both a smothering and cooling effect.
The other answer choices are incorrect because: A) CO2 can be effective in an enclosed space, C) CO2 systems can be designed to operate without electrical power, and D) CO2 does not typically break down into poisonous gases under normal firefighting conditions.
Related Questions
#750 The CO2 flooding system is actuated by a sequence of steps which are _______________.#751 The danger associated with using carbon dioxide in an enclosed space is _______________.#753 Which danger exists to people when CO2 is discharged into a small enclosed space? #754 Which statement concerning carbon dioxide is FALSE? #755 While you are working in a space, the fixed CO2 system is accidentally activated. You should _______________.