KHIA headerKnow-How in Action

VOL XXXIII, NO 30

Old Pumps Repaired, Protected And Improved With Belzona

 
 

Industry:

Marine (MRNE)

 
 

Application:

Centrifugal Pumps (CEP)

 
 

Customer Location:

Dry Dock Facility, BC, Canada

 
 

Application Date:

August 2017

 
 

Application Situation:

Pumps housing building at a Canadian historic site. 30 ft high pumps.

 
 

Problem:

The pumps were damaged by erosion-corrosion due to the salt content in the water they were pumping. Holes had developed in some of the cast iron casings and stuffing boxes also needed major rebuilding. Although the pumps were old, replacing them was not possible.

 
 

Products:

Belzona 1121

Belzona 1341

 

Substrate:

Cast Iron

 
 

Application Method:

The application was carried out in accordance with modified versions of Belzona Know-How System Leaflets CEP-1 and CEP-3. Belzona 1121 was used to rebuild and repair the eroded surfaces. Belzona 1341 was used to improve the pumps performance. Due to the large size of the pumps and related inlets and outlets, it was decided to blast in stages and then protect with Belzona 1341. This was followed by a skim coat of Belzona 1341/1121 mixture to fill in most of the lower depressions. The remaining voids were filled with Belzona 1121. The units received a final brush blast before 2 successive coats of Belzona 1341 grey and blue were applied.

 
 

Belzona Facts:

The project spanned 3 years a the dry dock had to remain in service all the time as a result of one pump had to be operational all the time. The dry dock continues to use Belzona products and solutions for many problems associated with the dry dock.

 
 

Photographs Description

1. 30 ft high pump.

2. Showing damage from erosion-corrosion.

3. Application of Belzona 1341 Blue in progress.

4. Complete 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