Phenolic Epoxy Immersion System

Phenolic epoxy coating systems are really protective linings. They are used in tough environments, like hot water, crude oil, sour service, chemicals and strong industrial fluids.
These systems give us:
   Excellent protection against chemicals
  They can handle temperatures
  They work well in water immersion
   They stick well. Protect against corrosion

Common Applications

  Crude oil storage tanks
  Produced water tanks
  Offshore platforms
  Ballast tanks
   Chemical process vessels

 Refineries and petrochemical plants

Phenolic epoxy immersion system.

Typical Phenolic Epoxy System

Here is what a typical phenolic epoxy system looks like:
Coat Material Thickness
Primer Epoxy Primer 50–75 µm
Intermediate High Build Phenolic Epoxy 150–250 µm
Topcoat/Lining Phenolic Epoxy 150–300 µm
The total thickness is usually between 300–600 µm.

Key Advantages

The phenolic epoxy system has some benefits:
   It can handle hydrocarbons
   It lasts long in immersion
   It resists abrasion well
   It can handle temperatures
   It protects against corrosion for a time

Surface Preparation

To prepare the surface we need to:
   Blast it with abrasive materials to SSPC-SP10 / NACE No.2
   Make sure the surface profile is 50–75 microns
  Ensure the surface is clean, dry and free of salt

Common Failures

Some common issues with epoxy systems are:
  Blistering
  Solvent getting trapped
  Poor curing
  Delamination
  Corrosion, under the film

Inspection Requirements

To ensure the system works well we need to:
   Check the thickness
   Detect any holidays
   Test the adhesion
   Check the surface cleanliness
    Monitor the dew point