KHIA headerKnow-How in Action

VOL X, NO 14

Belzona® Protects Main Circulation Pump In Nuclear Power Station



Power (POWR)



Centrifugal Pumps (CEP)


Customer Location:

Nuclear Power Plant in Mexico


Application Date:

September 1991


Application Situation:

Main cooling water circulation pump



All the pump components suffered from erosion/corrosion due to the use of sea water as the cooling medium. The effects were exacerbated by entrainment, cavitation and bimetallic corrosion.



Belzona® 1311(Ceramic R-Metal)

Belzona® 1321(Ceramic S-Metal)

Belzona® 6111(Liquid Anode)

Belzona® 5811(Immersion Grade)



Cast Iron


Application Method:

In accordance with Belzona Know-How Leaflets CEP-5, CEP-3 and CEP-4.


Belzona Facts:

Using the Belzona repair method cost the customer 30% more than using the conventional repair materials. Whereas the usual repairs lasted no more than a year before maintenance, this repair, completed nearly five years, ago is still intact. The saving to the customer, after the initial outlay of £60,000, is £45,000 and five days of downtime every year.


Photographs Description

  1. Surface of pump prior to application of Belzona® 1311 showing damage  
  2. Applying Belzona® 1311   
  3. Components of pump ready for reassembly, external surfaces protected with Belzona® 5811
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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