What is required for loading cylinders of compressed gas in a vehicle without racks?

Loading cylinders of compressed gas in a vehicle requires that they be secured in an upright position or, if lying down, must be laid flat and properly braced to prevent movement during transport. This is critical because it minimizes the risk of the cylinders tipping over, which can lead to dangerous incidents, including leaks or ruptures. The bracing ensures that the cylinders do not shift and provides stability while the vehicle is in motion. Additionally, keeping the cylinders upright helps to reduce the chance of any potential damage to the valves and fittings.

In contrast, loading cylinders lying down only is insufficient if they are not properly secured, as this could lead to them rolling or being displaced. Transporting cylinders while permitting them to be thrown about is extremely hazardous, as this can cause the cylinders to break or leak. Loading cylinders in any position without regard for their stability and safety is equally dangerous, as it fails to meet safety standards intended to protect both the transport personnel and the public.