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Corroded Bolted Steel Silos, Tanks or Vessels

Market: Power Generation

Material Stored: Fly Ash

Issue: Leaking, bolted steel silos.

5 Silos for repair
The picture above shows extreme corrosion.

 

Corroded bolted steel silos, tanks or vessels should be repaired to avoid leaking or other failure. For this repair, the silos suffered from extreme corrosion and risked leaks due to a compromised gasket. Overtime, gaskets placed between the bolted flanges dries out and becomes brittle. This leads to a weak spot in the seam that can leak. The seam’s integrity can also be compromised by thermal differential, pressurization by pneumatic loading or negative pressure from dust collection systems.

5 Silos for repair
The silos prepared for the top coat.

 

To repair the issue, a special surface cleaning procedure was utilized and all seams, both vertical and horizontal were caulked to prevent water intrusion into the silo and material leakage into the environment.

5 Silos for repair
The right-hand silo is finished and the left is half-way completed with the top-coat.

 

Once the caulking has dried, a proprietary sprayed-on rubber coating material was used. This coating bonds directly to the steel silo over the joints. It was finished with a durable top coat to fully encase the deteriorated silo.

The top coating can be provided in a variety of different colors.

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