Pinholes caused by a mixture of gas and water created problems for a local power plant.

The seals on these precipitator doors failed.

The holes casusd by the failing doors allowed moisture into the precipitators, which combined with the ash to make dangerous acids.

The mixture of ash and water caused the metal to corrode.

The rapper shaft was leaking, which allowed moisture in.

The doors and areas inside were sandblasted while the plant was on an outage.

This door had very little workable surface left after the old coating was stripped away.

The original insulation was removed, and closed-cell foam board was used to replace it. Expanded metal was tack-welded over that.

It was also tacked into a one-foot perimiter inside each precipitator door.

The rapper also had expanded metal welded to it.

The Belzona 1811 Ceramic Carbide was applied over the metal. This is the inside of the precipitator doors.

This is one of the doors finished. Two years later, the repairs were still in excellent shape.