KHIA headerKnow-How in Action

VOL XXIII, NO 86

Belzona® Renovates Puddle Pipes

 
 

Industry:

Power (POWR)

 
 

Application:

Valves, Pipes and Fittings (VPF)

 
 

Customer Location:

Nuclear Power Station, UK

 
 

Application Date:

Summer 2006

 
 

Application Situation:

Corrosion on seawater inlet pipe to cooling system for nuclear power station.

 
 

Problem:

Corrosion affects these pipes where the concrete pipe in the sea connects with the steel pipe into the power station and the previous ceramic based products had failed to give the level of protection that was needed. Very regular coating was needed to keep the situation under control.

 
 

Products:

Belzona® 1311 (Ceramic R Metal)
Belzona® 1321 (Ceramic S Metal)
 

Substrate:

Mild steel

 
 

Application Method:

Application carried out in accordance with Belzona System Leaflets VPF-1 and -2. A four coat system was adopted by the Power Station to maximise longevity.

 
 

Belzona Facts:

Before full scale application, trials were carried out with Belzona system pitted against 2 alternative suppliers (both ceramic based products). Belzona was found to be the clear winner when it came to erosion corrosion protection and therefore best value for money. Examined after 3 years no sign of erosion found. No problem seen in achieving required 6 year life. Previous recoating was carried out every 2 years.

 
 

Photographs Description

  1. Scope of work
  2. Top section complete
  3. The finished surface
  4. Inspection after 3 years shows no erosion damage
 
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