Question

Why should a train operator NOT put his hand in the path of the discharge from a carbon dioxide fire extinguisher?

1) Because it can cause burns
2) Because it can cause frostbite
3) Because it can cause electric shock
4) Because it can cause an explosion

Answer 1

A train operator should not put his hand in the path of the discharge from a carbon dioxide fire extinguisher because it can cause frostbite, burns, and potentially an explosion.

Step-by-step explanation:

A train operator should not put his hand in the path of the discharge from a carbon dioxide fire extinguisher for several reasons:

1. It can cause frostbite: Carbon dioxide is stored in the fire extinguisher as a pressurized liquid. When this liquid is released, it rapidly expands and cools, causing the temperature to drop below freezing. This extreme cold can cause frostbite if the operator's hand is exposed to the discharge.
2. It can cause burns: Although carbon dioxide does not support combustion, it can still cause burns if it comes into direct contact with the operator's skin. The rapid cooling of the skin can lead to tissue damage and burns.
3. It can cause an explosion: Although not mentioned in the options, it is worth noting that carbon dioxide is an asphyxiant gas and can displace oxygen in confined spaces. If a train operator were to discharge a large amount of carbon dioxide into a closed area, it could potentially create an oxygen-deficient atmosphere and increase the risk of an explosion.