How can static charge be avoided when filling a container?

Avoiding static charge when filling a container is crucial for preventing fire hazards, particularly when dealing with flammable materials. The correct method to minimize static generation is by allowing the liquid to flow slowly or drip. When the liquid flows at high speeds or from a significant height, turbulence is created, which can increase static charge accumulation due to friction between the liquid and the container's surfaces, as well as between the molecules of the liquid itself.

Filling slowly or using a dripper helps control this flow, reducing the energy and friction that lead to static charge buildup. This approach allows for a more gentle transfer of liquid, promoting a smoother interaction between the liquid and the container. Consequently, it decreases the likelihood of static discharge, thus mitigating the risk of ignition when working with flammable liquids.

Faster filling techniques, directing flow with nozzles, or filling from a height can all contribute to increased turbulence and static electricity generation, which is why they are not effective strategies for preventing static charge when filling containers.