KHIA headerKnow-How in Action

VOL XXXIII, NO 8

Belzona® Superwrap II Salvages Sewage Treatment Plant

 
 

Industry:

Water / Wastewater (WATR)

 
 

Application:

Valves, Pipes and Fittings (VPF)

 
 

Customer Location:

France

 
 

Application Date:

2017

 
 

Application Situation:

Two 200mm diameter carbon steel pipe elbows housed within a sewage treatment plant.

 
 

Problem:

Carbon steel pipe elbows have been suffering over time from external corrosion due to weathering. The Customer required the restoration of metal loss on both pipes whilst adding further protection against future corrosion. The Customer was interested in a compliant composite solution to repair by reinstating the pipe's strength and to protect the pipework from further corrosion. 

 
 

Products:

Belzona SuperWrap II System

 

Substrate:

Carbon Steel

 
 

Application Method:

The application was carried out in accordance with a modified Belzona Know-How System leaflet VPF-11 for repairing leaks in pipes. The pipework was offline. Three wraps (6 layers) of Belzona SuperWrap II were applied to the repair area according to the design, specifically created for this application. 

 
 

Belzona Facts:

The Customer chose Belzona SuperWrap II because the system can be designed as a compliant repair to ISO and ASME standards, which can provide a specific design lifetime, up to 20 years. The Customer was pleased with the ease of application compared with traditional methods of repair, plus reducing downtime allowing the pipework to be back in service within 24 hours.

 
 

Photographs Description

1. Corroded pipework

2. Extensive corrosion leading to through wall defects

3. Surface was prepared via grit blasting

4. Finish 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