KHIA headerKnow-How in Action

VOL XXX, NO 74

Belzona® Repairs 8" Water Pipe/Flange

 
 

Industry:

Power (POWR)

 
 

Application:

Valves, Pipes and Fittings (VPF)

 
 

Customer Location:

Anadarko, Oklahoma

 
 

Application Date:

October 2014

 
 

Application Situation:

8" Water lines from the condenser to the Power Plant were failing due to corrosion and while the customer was in the process of replacing all interior and exterior 8" lines, the customer discovered the connecting line that went underground into the facility was the root and major source of leaks of the orginal problem. Downtime and cost was a huge issue. There were two flanges that were return lines into the plant. The issue was more extreme than predicted and the customer was concerned about the pipe completely breaking at the base of the concrete or pull apart.

 
 

Problem:

8" pipe had corroded all the way through the pipe in several areas around it. The heat condensers were installed directly above the flange and the pipe that returned cooled water back into the plant. There was not a lot of room to work with and the customer did not know how to seal or repair. They wanted a solution that would prevent the pipe from seperating at the concrete level.

 
 

Products:

Belzona 1121 (Super XL-Metal)

Belzona 1321 (Ceramic S-Metal)

 

Substrate:

Mild Steel and Concrete

 
 

Application Method:

Corrosion was removed through grinding and the interior sleeve was then cold bonded with Belzona 1121. The voided areas and rough edges were then filled in with Belzona 1121 around the interior sleeve. The exterior sleeve to the 8" pipe and the concrete was cold bonded with Belzona 1121. Two coats of Belzona 1321 were applied on the interior and exterior.

 
 

Belzona Facts:

The plant was looking at a 2-3 month downtime for the traditional repair to remove/replace 20' of the 8" pipe, which the estimated cost would be $700,000. The customer chose the Belzona solution because it was cost effective and met their requirements. The pipe was back in full service 72 hours after the Belzona repair. The Belzona repair took 3 hours per flange. The total cost was $7,500.00, saving the customer hundreds of thousands of dollars and reduced downtime by 98%.

 
 

Photographs Description

  1. 8" pipe/flange in existing condition  
  2. Cold bonding process with Belzona 1121 to the interior and exterior sleeve
  3. Two coats of Belzona 1321 on interior and exterior
  4. Completed application and back in service
 
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