The correct answer is A) discharging a fire hose on deck. Discharging a fire hose on deck is not considered to have the potential for generating static electricity. This is because the water stream from a fire hose is a continuous flow, which does not create the type of turbulence or friction that can lead to the buildup of static electricity. In contrast, the other options (B, C, and D) involve the movement, settling, or spraying of petroleum products, which can generate static electricity due to the fluid dynamics and the presence of flammable vapors. These situations require special precautions to mitigate the risk of static electricity ignition.