7 July 2016 — AFD Petroleum
Overfilling and spilling are common problems with on-site fuel tanks. If you use fuel in your everyday operations, you likely face this challenge on a daily basis. We designed the Portable Fuel Station (PFS) with the following failsafe measures to store your fuel safely and reduce spillage.
The PFS has a valve to prevent the unit from being overfilled. Other storage tanks have a similar valve that closes when fuel rises to that level, but if the valve is faulty, it won’t close and the tank will overfill. The PFS, on the other hand, won’t even start to take fuel unless the overfill prevention valve is working. If fuel doesn’t start flowing, the tanker operator will know to check the valve before proceeding.
The PFS was designed with alarms to tell the tanker operator when the unit has reached 90% capacity. Flashing lights and an audible alarm will tell the operator that the overfill valve is about to shut down. The operator can then finish filling the tank more slowly. This ensures they receive enough warning and reduces the risk of overfilling.
You might have noticed that single-walled fuel storage tanks are more likely to spring a leak. We designed the PFS with two walls for added safety. If the outer wall is damaged — by a company vehicle, for example — the inner wall will remain intact. Likewise, if a foreign object enters the tank and damages the inner wall, the outer wall will keep fuel from leaking out.
Fuel flows quickly, so it’s important to ensure it doesn’t get out of control. While the other failsafes ensure the PFS isn’t overfilled, the auto-shutoff nozzle prevents vehicles from being overfilled. If the tank gets too full, the nozzle will deactivate and the fuel will stop flowing. The system also allows you to pre-set a maximum amount for each vehicle at each fill-up so it receives exactly the right amount of fuel every time. This keeps the unit neat and free of spills.
The PFS is designed with safety breakaway couplings in case the driver pulls away from the tank before returning the fuel nozzle to its holder. The breakaway couplings have a diverted breaking point at a determined break load. At that point, the internal valves automatically close on both sides to avoid spilling. So if there’s an accident, there’s no cleanup, no repairs, no downtime, no expense, and no impact on the environment.