7 Eleven Fuel Stations

Fuel Filling Bunds

The problem

The stormwater system cannot receive discharge containing hydrocarbons and the sewer network is not designed to receive added loadings during rainfall events

Clean Rainwater falling on the bunded catchment is directed away via the stormwater network

Spillage 0ccurences during any fuel transfer is directed to a retention tank for either disposal to sewer via a mechanical

Oil/Water Separator or Prescribed Waste evacuation and disposal.

The Application

Unroofed Tanker Filling Bunds – Various Sites

The Solution

Installation of a Model No. FE/LHDACV Diversion System

The system includes a proprietary control panel with an independently certified intrinsically safe suite of barriers and controls applicable to a zone 1 explosive hazard rating interfaced with a hydraulically (water) driven hydrocarbon spill/stormwater diversion valve set in a fabricated Stainless Steel Grated Pit with a 5mm perforated screen silt basket.

The System Function

During day to day operation absent tanker fuel transfer the diversion valves are activated to direct clean rainwater discharge to the stormwater network with the valve directing flow to the below ground holding tank set in the closed position

When fuel transfer occurs the system is interfaced with opening and closing of the fuel filling point hinged lids, when a lid is opened the hydraulic (water) drive line opens the trade waste diversion valve directing any spillage to the below ground collection tank and closes the valve on the discharge to stormwater securing the site from potential hydrocarbon discharge to the environment

When fuel transfer ceases and the filling lid is closed the valves return to default mode being clean water discharge to stormwater valve open and polluted discharge to below ground collection tank valve closed.

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