As part of a CP survey on impressed current, we make sure the rectifier itself is working properly - we can also repair them.

Part of a correct CP survey includes checking the dispenser cabinet for dielectric bushings, metal contacting soil, and / or boots.

Crews are confined space trained, and we use tripods and harnesses for entrants to ensure their safety in the tank.

We wear specific PPE at all points in the cleaning, surface prep and repair processes.

This is a typical petroleum tank bottom prior to cleaning. There is sludge and residual fuel that must be removed and disposed of properly.

Example of a tank after it has been cleaned and dried, before surface preparation begins.

We use various measurements and tools to ensure we are doing the work properly, in accordance with industry, national and state guidelines.

This photo shows a tank after cleaning and surface preparation processes are almost complete. This tank has been sandblasted to a near white metal finish.

After preparing the surface we apply a petroleum specific coating to the tank interior (floor, half or 360 as shown) to help prevent future corrosion of the int...

Once our work completes, either we or another contractor backfills the area and recovers the parking lot, typically with concrete. It remains roped off to cure.