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Ground Protection for Mobile Fuel Tanks
Ground protection for mobile fuel tanks is essential to prevent static-related hazards. Here are the key steps and considerations:
Equipment Selection
- Use proper grounding cables: Low-resistance copper cables (at least 4 AWG) with well-fitting clamps
- Ensure clean connections: Clamps should attach to clean, unpainted metal surfaces on the tank or vehicle chassis
Pre-Transfer Procedures
- Park on stable surface: Choose a non-insulating surface and engage parking brake
- Secure the vehicle: Chock wheels if needed
- Establish grounding: Connect clamp to tank metal and to a reliable ground (grounding rod or vehicle chassis)
- Bond multiple tanks: When transferring between tanks, use bonding cable to equalize electrical potential
During Transfer
- Maintain connections: Keep grounding system intact and avoid moving tank
- Use anti-static hoses: Helps reduce static charge buildup
Post-Transfer & Maintenance
- Wait before disconnecting: Allow at least 30 seconds for residual charges to dissipate
- Inspect equipment: Regularly check cables and clamps for damage or corrosion
- Follow safety standards: Comply with OSHA (U.S.) or ADR (Europe) requirements (≤10 ohms resistance)
By adhering to these practices, the risk of static-induced fires and explosions can be effectively minimized.