How do you determine if a DOT cylinder is overfilled?

To determine if a DOT cylinder is overfilled, checking the weight of the filled cylinder is essential. Each DOT cylinder has a specified maximum fill weight, which includes the weight of the cylinder itself and the maximum amount of liquid propane it can safely contain. By weighing the filled cylinder and comparing it to its marked tare weight (the weight of the cylinder when empty), one can calculate the total weight of the contents. If the total weight exceeds the acceptable limit, it indicates that the cylinder is overfilled, which poses safety risks such as increased pressure and potential leaks.

Other methods, while important for overall cylinder safety, do not directly indicate overfilling. For instance, checking for leaks in the valve is crucial for ensuring the cylinder is safe to use but does not provide information regarding the fill level. Evaluating the color of the gas may help with identification but does not reflect the fill status. Inspecting the cylinder for dents is relevant for checking the integrity and safety of the cylinder but does not determine whether it is overfilled. Thus, weighing the cylinder is the most straightforward and effective method for assessing whether it has been overfilled.