KHIA headerKnow-How in Action

VOL XXIII, NO 96

Belzona® Repairs Main Cooling Water System Flange

 
 

Industry:

Power (POWR)

 
 

Application:

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

 
 

Problem:

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.

 
 

Products:

Belzona® 1111 (Super Metal)

 

Substrate:

Steel

 
 

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

 

 
 
For more information about Belzona visit: www.belzona.com