Why should propane cylinders not be stored in an unventilated closed room?

• A. It helps improve odor detection
• B. It enhances cylinder stability
• C. It prevents leaks by compressing gas
• D. Gas can accumulate, creating a fire or explosion hazard

Answer: (D)

Propane is a flammable gas, and if a leak occurs, it can build up in an enclosed, unventilated space. Since propane is heavier than air, the vapor tends to pool near the floor and can reach flammable concentrations. In a confined room, even a small ignition source could ignite the gas, leading to a fire or explosion. Keeping cylinders in a well-ventilated area allows any leaked gas to disperse rather than accumulate. The odor added to propane helps detect leaks, but it doesn’t make storage in a closed room safe, and leaks aren’t prevented by compressing gas or by cylinder stability alone.