SPI liner and Petro-Barrier™ plug installed in Arizona
for electrical transformer containment
Petro-Barrier plug used in conjunction with an SPI liner system. The area around the substation was excavated to allow containment for all the oil in the transformer plus rainwater.
A trench provides drainage from the Petro-Barrier plug into the grounding grid to provide moisture for the grid.
The Petro-Barrier plug housing is installed and surrounded with crushed stone for water drainage. The liner is then attached to the housing plug providing a water/oil seal so the only drainage is through the Petro-Barrier plug.
The liner, a solid piece of 30 oz XR5 modified vinyl, is attached to the concrete pad with aluminum strips, screws and sealant. All areas where conduit or grounding wires come through the liner are completely sealed. The Petro-Barrier plug will slide into the housing that is attached to the liner. The plug and housing, which are flanged and attach to the liner with screws, can be removed and replaced as needed.
The liner, which comes delivered in one piece, has 12” high walls and is supported by angle brackets every two feet. The liner Is custom-made to the station's measurements.
The liner is in place and the Petro-Barrier plug is installed. A pre-filter is used over the Petro-Barrier plug and the liner is backfilled with crushed stone. Another truckload of crushed stone is used to finish off the site. This containment area took one day of labor with four men and a backhoe.
P.O. Box 35 • 215 Village Street • Northford, CT 06472
