The best practice for controlling static electricity when offloading contents is to bond what?

Bonding both containers and equipment is essential for preventing static electricity build-up during the offloading of contents. When transferring materials, particularly flammable or volatile substances, the risk of static discharge can be significant due to the movement of liquids or solids, which can generate static charges.

By ensuring that both the containers holding the materials and the equipment used for the transfer are bonded together, you create a safe path for any static charges to dissipate. This bonding provides a continuous conductive pathway that prevents any difference in potential between the surfaces, minimizing the risk of sparks that can ignite flammable vapors.

Bonding only the containers would leave the equipment ungrounded, potentially allowing for a build-up of static charge on the equipment itself. Similarly, bonding only the equipment without connecting the containers could lead to a hazardous situation where the containers remain charged. Therefore, the most reliable practice is to bond both components, ensuring a comprehensive approach to static electricity control and enhancing safety during the operation.