Why is it important to avoid open flames around oxygen equipment on a plane?

• A. Oxygen supports combustion and can ignite with sparks; keep away from flames and ignition sources.
• B. Oxygen cools the cabin and stabilizes fires.
• C. Oxygen neutralizes all flammable materials.
• D. Oxygen reduces the risk of fire.

Answer: (A)

Oxygen supports combustion, so open flames around oxygen equipment can ignite and cause fires. In an environment with enriched oxygen, materials that might not burn easily can ignite with a small spark, and once a flame starts, it can spread rapidly because the extra oxygen feeds the flames. That’s why any ignition source—sparks, flames, smoking, or hot equipment—must be kept well away from oxygen systems and their tubing.

The other statements don’t fit because oxygen doesn’t cool cabins or stabilize fires, it doesn’t neutralize flammable materials, and it certainly doesn’t reduce fire risk. In fact, it raises the risk by making ignition and burning easier.