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Scope of Work for Oil Tank/Vessel Cleaning

  1. Dip the level of sludge from different points and through some roof legs to calculate the quantity of sludge.
  2. Receiving the tank online and the designated work area for our equipment and machines.
  3. Hanging up our circuits around the tank using outlets, drains, on tank’s shell, also from the roof by removing a selected roof support and inserting 2” hoses through the legs sleeves.
  4. Open the manholes for ventilation and build up a weir barrier around the manhole if required to prevent pollution.
  5. The contents of the storage tank are reduced to leave approximately a 50/50 mix of sludge and crude oil.
  6. Start heating with circulation until temperature of the entire contents is raised to 50-55 0 C.
  7. When the temperature is raised, start the chemical injection within a dose range from 500 to 1000 ppm. The thermo-chemical injection enhances the efficiency of the surface active agent which disperses the sludge by batch process (layer by layer)
  8. Circulation to ensure the homogeneity of the entire tank contents.
  9. Settling will be done for the required time so that the water content is separated and drained from the tank.
  10. Special precaution will take place before the tank entry and during the cleaning procedures.
  11. Remove the sludge and other heavy material from the tank bottom using vacuum trucks.
  12. Transfer the sludge outside the field if client need
  13. Cleaning the bottom plates and shell plates up to 2 meter height to the original metal.
  14. Hand over the tank after final cleaning to client inspection department.

What We Do

Some of the problems that may be attributed to sludge deposition in storage tanks include.
  • Loss of sludge entrapped hydrocarbons.
  • Reduced tank holding capacity.
  • Erroneous measurements of crude quantity.
  • High sediment concentration is found in the oil located in the bottom of the tank, this causes troubles in desalting operation.
  • Sludge build up may interfere with the roof floating operation.
  • Tank drain plug problems may occur.
  • Increased transfer pump maintenance due to impeller erosion and blockage, may become a problem
  • Corrosion cell often assemble in the sludge zone


  • Time saving
  • Economical and optimal
  • No crude losses
  • Closed circuit system
  • No pollution
  • No danger or damage to downstream system
  • No toxic reactants, products or fumes
  • Guaranteed success
+20-2-22727230 / 23521542
+20-2-23521559 / 23521561
4th HELMY ABD ELAATTY str. 8th dist. Nasr city - Cairo-Egypt
#206-154 Queen str.S,Mississauga-ON-L5M2P4-Canada