General Tank Lining Types

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There are many different types of tank lining materials from various manufacturers which have differing uses, benefits and draw backs. Unlike others who have a vested interest in recommending one particular technology, we do not. We apply the full spectrum of tank lining systems from a range of manufacturers allowing us to select the best tank lining system for your project. Below is an overview of some of the tank lining systems we apply;

Epoxy Tank Linings

Epoxy coatings have come to form the backbone of corrosion control since their invention, including in tank lining environments. Because epoxy coatings are such a versatile technology the endless variations and uses of epoxy tank lining cannot be listed here. Technologies such as Novalac epoxies mean that they can now be used in more aggressive and higher temperature environments than previously possible.

Potential Uses;

AdvantagesDisadvantages
  • Very versatile technology with many uses
  • Can be tested using a DC holiday spark tester upon completion to check for pin holing
  • Can be solvent free to reduce risk during application
  • Can be moisture tolerant
  • Generally not flexible, meaning that if movement is suspected reinforcement may be required.
  • Generally slow curing, meaning a slower return to service.
  • Generally non-permeable meaning that use where water vapour pressure is occurring may lead to blistering.

Cementitious Tank Linings

Cementitious linings, polymer modified cementitious and epoxy modified cementious linings have been widely used throughout industry and water treatment for the lining of concrete tanks for many years. A particular benefit of cementitous linings is that they can often be used to waterproof below ground structures. Generally cementitious tank linings are vapour permeable also meaning that they are particularly suitable for use in below ground structures.

Potential Uses;

AdvantagesDisadvantages
  • Generally vapour permeable
  • Can also be waterproofing
  • Versatile technology with many uses
  • Generally not flexible, meaning that if cracking/movement is occurring additional design details may be required.
  • Cannot be spark tested due to their conductive nature
  • Generally slower cure time and longer return to service

Polyurethane Tank Linings

Like epoxies polyurethanes are a very versatile technology with many varieties and uses. Not all polyurethanes are suitable for tank linings and any used should have been specifically designed for that purpose. Through different formulations polyurethanes can be made flexible, brittle or somewhere inbetween. Flexible/crack bridging materials are particularly suitable for concrete structures.

Potential Uses;

AdvantagesDisadvantages
  • Very versatile technology with many uses
  • Can be tested using a DC holiday spark tester upon completion to check for pin holing due to non conductive properties
  • Can be solvent free to reduce risk during application
  • Can have a fast cure and return to service compared to the majority of epoxy materials
  • Generally very sensitive to moisture during application
  • Not vapour permeable

Polyurea Tank Linings

In the world of tank linings Polyurea materials are a relatively new phenomenon, with commercial applications only beginning in earnest in the 1990’s. Generally the material is applied through specialist spray equipment due to the very fast gel time of the materials which is typically below 10 seconds. The material generally offers excellent strength and flexibility with elongation properties up to 900% possible. As with epoxies and polyurethanes there are many different versions available designed for different applications.

Potential Uses;

  • Water Tank Linings – Both WRAS and Regulation 31 approved materials are available
  • Steel Tank Linings
  • Chemical tank linings
  • Concrete tank linings
AdvantagesDisadvantages
  • Very versatile technology with many uses
  • Can be tested using a DC holiday spark tester upon completion to check for pin holing due to non conductive properties
  • Solvent free
  • Extremely fast cure time allowing fast installations and return to service within as little as 1 hour depending upon usage
  • Flexible
  • Abrasion resistant
  • Moisture insensitive in terms of humidity during application. Dew point constraints still need to be observed
  • Very long service life
  • Specialist spray equipment required with support plant
  • Generally have to be spray applied
  • Not vapour permeable

Vinyl Ester Tank Linings

This proven technology offers some of the highest levels of chemical resistance available when applying a protective lining. This material has been extensively used throughout chemical processing and in refinery environments due to its ability to withstand chemical attack even at elevated temperatures.

Potential Uses;

  • Steel Tank Linings
  • Chemical tank linings
  • High temperature tank linings
  • Concrete tank linings – with reinforcement if required
AdvantagesDisadvantages
  • Can be tested using a DC holiday spark tester upon completion to check for pin holing due to non conductive properties
  • Highly chemical resistant
  • Can tolerate high operating temperatures
  • Generally not flexible, meaning that if movement is suspected reinforcement may be required.
  • Generally non permeable meaning that use where water vapour pressure is occurring can lead to blistering.
  • Pungent odour during application which needs to carefully managed
  • Sensitive to moisture during application

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