How can you determine if a DOT cylinder is overfilled?

Determining if a DOT cylinder is overfilled primarily involves checking the weight of the filled cylinder. Each type of cylinder is designed to hold a specific maximum amount of gas, which is indicated on the cylinder's label or markings.

By weighing the cylinder after it has been filled, the dispenser can compare the weight to the maximum filled weight indicated on the label. If the actual weight exceeds this limit, it indicates that the cylinder is overfilled. This measurement is crucial for safety, as overfilled cylinders can pose risks such as increased pressure and potential rupture, leading to hazardous situations.

Other methods like measuring the height of the gas inside, visually inspecting for excess gas, or checking the color of the cylinder are not reliable measures of whether a cylinder is overfilled. These methods lack the precision needed to ensure safety and compliance with regulations.