KHIA headerKnow-How in Action

VOL XXXIII, NO 46

Belzona® Repairs Leaking Cpvc Cooling Water Lines

 
 

Industry:

Power (POWR)

 
 

Application:

Valves, Pipes and Fittings (VPF)

 
 

Customer Location:

Nova Scotia, Canada

 
 

Application Date:

March 2018

 
 

Application Situation:

Cooling water line for biomass power generation turbine.

 
 

Problem:

The customer was experiencing significant water leaks from a 250mm (10 inch) cooling water line, through an existing non-Belzona wrap repair. The leaks were occurring at the fitted flanges of two separate lines. Due to the severity of the leak, the biomass generation turbine was taken out of service until a Belzona repair could be completed.

 
 

Products:

Belzona 1212

Belzona 1161 (Super UW-Metal)

Belzona 9341 (Reinforcement Tape)

Belzona 9111 (Cleaner/Degreaser)

 

Substrate:

CPVC

 
 

Application Method:

Application was carried out in accordance with Belzona System Leaflet VPF-11. The substrate was profiled using a beaver file hand tool. The repair area was marked and cleaned with Belzona 9111, and allowed to dry. The slow trickle of water around the flange fitting was stopped using Belzona 1212. Additional Belzona 1212 was used to chamfer the flange fitting to the main CPVC line. Belzona 1161 was then brushed over the repair area then wrapped with one layer of Belzona 9341 wetted with additional Belzona 1161. Additional Belzona 1161 was used to fully encapsulate the reinforcing tape.  

 
 

Belzona Facts:

The entire repair was completed in five hours. The biomass generation turbine was started several days later with no leaking visible on the cooling water lines.

 
 

Photographs Description

1. Water leaking through existing wrap repair.

2. Cleaning CPVC with Belzona 9111.

3. Completed Belzona 1161 repair.

4. Completed Belzona 1161 repair to a parallel line.

 
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