In rail car loading and unloading operations, electrostatic build-up products are transferred from storage tanks to tank cars through a loading system. As the product travels through the conveyor system to the railcar, the molecules in the product are charged with static electricity. If the railcar is not directly grounded, it can build up static charge on its surface, which will cause the railcar's voltage to rise sharply in a short period of time, causing a static fire accident