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We want to be the best,
not the biggest

When you want to be the best, you cannot rest on your laurels. We are always looking for improvement by asking questions and sharing knowledge, both within Geerdink and with Compass and Enigma.

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This approach, in the hands of our committed employees, offers clients quality that meets their requirements, and perhaps more importantly, satisfies our own standards.

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and dedication

In keeping with our motto ‘standardise what we can, specify what we have to’, we have fully mapped out our work processes and standardised the general processes.

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Enigma is specialised in:

  • Cleaning storage tanks, especially on land
  • Cleaning industrial installations, such as reactors, pipeline systems, heating elements, purification installations and sewers (including inspection)
  • Cleaning during maintenance visits

Since each situation is unique with regard to the specifications and condition of the tank, the ground under the tank and the composition of the product residue, but also the possibilities and limitations, Enigma draws up an individual plan custom-tailored for each tank cleaning project.


Enigma uses a wide range of cleaning methods:

  • High pressure cleaning (up to 3,000 bar)
  • Wet and dry pressure vacuum cleaning
  • Suction dredging (ADR)
  • Specialist cleaning:
    • chemical-technical cleaning
    • elimination of bacteria, including legionella
    • dry ice-blasting

Enigma operates in the following product groups:

  • Mineral oil products, such as crude oil, fuel oil and condensates
  • VEG (vegetable) oils, including edible vegetable oils and fats and biofuels
  • Chemical products (bulk)
  • Dry goods (bulk)


An increasing number of parties around the world are searching for non-entry cleaning methods or semi non-entry methods for cleaning large tanks. Enigma believes non-entry methods are the future, because they are safer and more efficient. There are currently six non-entry or semi non-entry methods available for use:

  • Robotics
  • Spool Wash System
  • Manway Cannons
  • Jet Mixing
  • Warm Water Skimming
  • Steam Skimming

Enigma is one of the few companies that has mastered all of these methods and that actively invests in further innovation in the cleaning process.

Illustration right: Steam Skimming. Click here for more information about (semi) non-entry methods


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