KHIA headerKnow-How in Action


Belzona® 3211 (Lagseal) Prevents Future Under Insulation Corrosion



General Industry (GIND)


Áreas Know-How:

Tanks and Chemical Containment Areas (TCC)


Cliente / ubicación:

Cement manufaturer - Tunisia


Fecha de aplicación:

February 2004


Situación de aplicación:

Electro-static precipitators



The Electrostatic precipitators at this large cement manufacturer operate at 70kv and 200°C (392°F). As a consequence they are insulated to conserve heat energy. As usual the insulation is protected by the use of jointed steelsheeting which does not prevent moisture from penetrating the insulation layer. The result is under insulation corrosion made worse by the fact that the site is coastal and the atmosphere is salt-laden.



Belzona® 3211 (Lagseal)





Método de aplicación:

The application was carried out in accordance with Belzona Know-How System Leaflet TCC-4.


Hechos Belzona:

The insulation cladding is completely sealed with the Belzona® 3211(Lagseal) System. The entire surface except over the pressure relief valves of two of the four precipitators were protected and sealed with Belzona in six days. Each precipitator was nearly 300 square meters in size.


Descripciones de fotografías

  1. View of precipitators
  2. Work begins
  3. View of precipitator’s roof
  4. Application complete
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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