When would static ground be utilized?

When would static ground be utilized?

• A. During battery charging
• B. While offloading fuel into a storage tank
• C. Whenever the system is energized
• D. During routine data logging

Answer: (B)

Static grounding is used to prevent static electricity buildup during operations with flammable liquids by providing a low-impedance path to earth so that the potential of the source and receiving container stays the same. This is crucial when offloading fuel into a storage tank, because moving fuel and contact with the piping can generate static charges; bonding the truck to the tank and earthing them before and during transfer eliminates the potential difference and prevents a static discharge spark that could ignite vapors. The other activities don’t involve this specific risk—battery charging, energizing the system, or routine data logging don’t require static grounding to prevent ignition from liquid-transfer sparks, so they’re not the scenario where static ground is used.

Static grounding is used to prevent static electricity buildup during operations with flammable liquids by providing a low-impedance path to earth so that the potential of the source and receiving container stays the same. This is crucial when offloading fuel into a storage tank, because moving fuel and contact with the piping can generate static charges; bonding the truck to the tank and earthing them before and during transfer eliminates the potential difference and prevents a static discharge spark that could ignite vapors. The other activities don’t involve this specific risk—battery charging, energizing the system, or routine data logging don’t require static grounding to prevent ignition from liquid-transfer sparks, so they’re not the scenario where static ground is used.