17 November 2022

Corroserve was approached by a client; a major commercial shipping company, to repair a badly damaged ballast pump casing. The pump had sucked in a large item that had cracked open the casing at the bottom of the suction chamber.

repairing ballast pump - before

Arrival at the workshop

Following arrival at the workshop, the affected area was cut out and a new bronze plate was attached. This was achieved by using specialist welding techniques. The volute casing surface was then abrasive blasted to Sa2 ½ surface finish to provide a minimum surface profile of 50 microns. A two-pack cold cured vinyl ester laminating resin was then applied on the inside and outside of the affected area, to re-profile and add strength to the area.

repairing ballast pump - during

Coating Application

Finally, the casing was coated with Corroglass 600 series.This was done to a DFT of 1.25mm inside and coated to the requested RAL outside. The professional preparation and repairing of the casting before coating, and the use of Corroglass 600 will ensure the casting will be in service for many more years. Designed to provide protection against erosion corrosion in immersed environments, the product is outstanding in its performance. It can also be used in many areas of application to build thick layers, as well as being moulded and machined.

repairing ballast pump - repaired

 

The professional preparation and repair of the casting before coating and the use of Corroglass 600 will ensure that the casting will be in service for many more years. The specialist coating used is designed to provide protection against erosion corrosion in immersed conditions.

We  have the experience and expertise to either coat from new or provide remedial coatings to process equipment. The bespoke coating systems used are designed and manufactured by our sister company, Corrocoat, and are assessed by the operating conditions and mediums. These advanced coating systems have provided unrivalled levels of corrosion protection in the harshest environments for over 40 years. For more information on our coatings or how we can repair and protect your assets, contact a member of the team here.

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