KHIA headerKnow-How in Action


Belzona® Repairs Main Cooling Water System Flange



Power (POWR)



Valves, Pipes and Fittings (VPF)


Customer Location:

Nuclear Power Station, UK


Application Date:

September 2009


Application Situation:

Flange on seawater intake pipe of cooling system for nuclear power station



A new spool had been manufactured to connect the intake pipe to the rest of the cooling water system. During welding, the flange on this spool had become warped and following the subsequent machining was found to be up to 9mm undersized.



Belzona® 1111 (Super Metal)





Application Method:

The application was carried out in accordance with Belzona Know-How System Leaflet VPF-13. After applying the Belzona proud, on-site machining was used to achieve correct dimensions.


Belzona Facts:

This application follows the successful coating of the pipe internals with Belzona® 1321 in 2006. After 3 years this coating had been found to be in excellent condition, when this problem arose Belzona was the first and obvious choice. Belzona has been used many times to repair damaged flanges. The only alternative available to the client was to prefabricate the spool which represented unacceptable down-time.


Photographs Description

  1. Belzona® 1321 coating on puddle pipe
  2. Application of the Belzona® 1111
  3. Machining of the cured Belzona® 1111
  4. The completed application
Case study pic one


 Case study pic two


 Case study pic three


 Case study pic four


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