Question 239Safety & Environmental - QMED70% to pass
You are fighting a class "B" fire with a portable dry chemical extinguisher. The discharge should be directed _______________.
AI Explanation
The correct answer is B) at the seat of the fire, starting near the edge.
When fighting a Class B fire (flammable liquid or gas fire) with a portable dry chemical extinguisher, the proper technique is to direct the discharge at the base or seat of the fire, starting near the edge and sweeping it across the entire surface. This allows the dry chemical agent to smother and extinguish the fire at its source.
The other options are incorrect because: A) bouncing the discharge off a bulkhead is an inefficient technique, C) directing the discharge at the main body of the fire may not reach the seat, and D) discharging over the top of the fire is unlikely to effectively smother the base of the flames.
Related Questions
#237 To detect the presence of explosive gases in any space, tank, or compartment, you should use a _______________.#238 When fighting a fire with a portable dry chemical extinguisher you should always _______________.#240 If a fire broke out in an automation console, you would first secure the power and then proceed to use which of the listed hand portable fire extinguishers? #241 To operate a portable foam fire extinguisher, you should _______________.#242 In a cartridge-operated dry chemical type fire extinguisher, when the CO2 cartridge is activated, the dry chemical is released from the extinguisher _______________.