Case Study

Corrosion Repair for 2 Column Pipes



Corrosion repair for 2 column pipes subject to salt-water conditions.

Client 

Ministry of Defence, UK.

 

Application Date 

August 2021.

 

Scope of Work

Corrosion protection for 2 column pipes subject to sea-water conditions at ambient temperatures. Coating system used required excellent resistance under aggressive atmospheric conditions.

 

Products 

Internals: Polyglass VEF (Black)

Externals: Plasmet ZF

Substrate

Steel.

 

Coating System

  • Grit blast of externals to ISO 8501-1 SA 21/2.
  • Final blow down, sweep and thorough vacuum clean.
  • Polyglass VEF applied via airless spray to the minimum DFT of 1250 microns, with relative humidity <85%.
  • Grit blast of externals to ISO 8501-1 SA 21/2.
  • Final blow down, sweep and thorough vacuum clean.
  • Polyglass VEF applied via airless spray to the minimum DFT of 1250 microns, with relative humidity <85%.

 

Coating Credentials 

Polyglass was used for all of the external components due to its superb performance properties in immersed environments. Polyglass VEF boast excellent resistant to solvents, acids and de-mineralised water, as well as exceptional flexibility undercutting resistance and sliding abrasion resistance, making it an ideal coating system for the job. As part of this contract, 2 stoplog gates and 53 brackets were also repaired and protected from future corrosion. As a result of the work carried out to protect the components from future corrosion, the service life of the equipment is expected to be extended by many years.

Column Pipes before Repair

Column Pipes following Repair

Visit Our Other Sites