An operator is refuelling heavy equipment on a remote site using a mobile fuel tank containing diesel (Class 3 Flammable Liquid). Which of the following is crucial for preventing static electricity ignition, according to CSA B335 (Handling, Storage, and Use of Flammable and Combustible Liquids)?

Question: An operator is refuelling heavy equipment on a remote site using a mobile fuel tank containing diesel (Class 3 Flammable Liquid). Which of the following is crucial for preventing static electricity ignition, according to CSA B335 (Handling, Storage, and Use of Flammable and Combustible Liquids)?

Answer options: ✅ Ensuring proper grounding and bonding between the fuel tank and the equipment.

• Refuelling immediately after a heavy rain to increase humidity.
• Using a plastic funnel instead of a metal one to avoid sparking.
• Removing the fuel cap quickly to dissipate any built-up static charge.

Correct answer: Ensuring proper grounding and bonding between the fuel tank and the equipment.

Explanation: Proper grounding and bonding of all components involved in the transfer of Class 3 Flammable Liquids, such as a fuel tank and equipment, is critical to equalize electrical potential and prevent static electricity build-up, thus eliminating a common ignition source during refuelling, as per CSA B335.