Which of the following statements about propane storage is true?

• A. Propane cylinders can be stored indoors next to a heater
• B. Propane cylinders should be kept in enclosed spaces with poor ventilation
• C. Propane cylinders should be stored in a well-ventilated outdoor area away from heat and direct sunlight
• D. Propane cylinders should be stored in the refrigerator

Answer: (C)

Storing propane cylinders safely hinges on good ventilation and keeping them away from heat and direct sunlight. If a cylinder leaks, propane can pool in enclosed, poorly ventilated spaces and, because it is heavier than air, tend to collect in low areas where it could reach ignition sources and cause a fire or explosion. An outdoor, well-ventilated location allows any vapors to dissipate and greatly reduces that risk. Heat and direct sunlight raise the pressure inside the cylinder and the surrounding temperature, increasing the chance of venting or a rupture, so staying out of sun and away from heat sources is important. Refrigerators aren’t designed for propane storage and pose safety hazards, so they’re not suitable. The best practice is a well-ventilated outdoor area away from heat and direct sunlight.