What does the gas cylinder symbol represent?

The gas cylinder symbol specifically represents gases that are stored under pressure, indicating that these materials can pose significant safety risks. When these gases are contained in high-pressure cylinders, they can become hazardous if the cylinder is damaged, heated, or improperly handled. For example, if a pressurized gas cylinder is exposed to excessive heat, it might rupture or even explode, leading to severe injuries or damage. Understanding this symbol is crucial for safety protocols, as it alerts individuals to the potential dangers of pressurized gases, which may include the risk of explosion or uncontrolled release.

While other options refer to specific types of gases with their own hazards—flammable, toxic, or asphyxiating—these do not encompass the broader risk associated with any gas that is stored under pressure. Therefore, the correct interpretation of the gas cylinder symbol is focused on the potential for explosion and the need for careful handling of pressurized gas containers.