How should non-flammable gas cylinders be stored?

Non-flammable gas cylinders should be stored upright, secured, and away from heat sources to ensure safety and prevent potential hazards. Storing cylinders upright helps maintain their integrity and prevents leakage of gas. Securing them minimizes the risk of tipping or falling, which could lead to dangerous situations, including explosions or injuries. Keeping them away from heat sources is critical because high temperatures can weaken cylinder materials or lead to increased pressure inside the cylinders.

The other options involve unsafe practices that can compromise safety when handling compressed gas cylinders. Storing cylinders on their sides can lead to leaks or damage, and placing them in cluttered areas increases the risk of accidents. Poor ventilation can cause gas accumulation, creating an explosive environment if a leak occurs. Lastly, storing cylinders in an unlabeled container would pose serious identification issues, making it difficult to know the type of gas contained, which is essential for safe handling and emergency responses.