The customer was looking to internally line a newly fabricated 54,000 lbs Brine Vacuum Deaerator tank. They wanted to protect their investment by applying a barrier coating that would mitigate corrosion and other related problems.
Most deaerator vessels are made of carbon steel and over 30% of deaerators contain cracks which have been assessed as corrosion fatigue and or stress corrosion. The asset owner wanted to mitigate these problems, so they specified for a coating to be applied before the equipment was put into service.
The vacuum deaerator was grit blasted and prepared to a minimum surface profile. The prepared substrate was then cleaned and degreased with a solvent solution which did not leave any residue. Then 3 coats of Belzona 5811 (Immersion Grade) were brush applied following the product instructions for use (IFU).
The product was applied via brush because of the complex internal geometry but the long overcoating time allowed the applicator to complete the application successfully without the need for additional surface preparation between coats. This saved the client on time and the Deaerator could be put into commission quicker.
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