In terms of safety, how should propane cylinders be arranged?

Propane cylinders should be arranged in a vertical and upright position for safety reasons. When stored upright, they have a lower risk of leaks and allow the pressure relief valve to function properly. This is essential because if a cylinder were to leak, the propane would exit the cylinder and dissipate rather than accumulate at the bottom, which could lead to hazardous situations, such as an explosion or fire.

Storing cylinders vertically also ensures that the liquid propane is kept at the bottom and that the gas vapor can escape from the top when the cylinder is being used. This positioning is crucial in maintaining the integrity of the cylinder and in promoting safe practices during dispensing and handling.

In contrast, other options such as stacking cylinders loosely, placing them in any convenient position, or arranging them horizontally might lead to instability and increase the risk of damage or accidents. Therefore, maintaining cylinders in an upright position is a key aspect of ensuring safety when handling propane.