Number of problems that occur frequently while cleaning the tanks. We summarizes these frequently encountered problems and the simplest approaches to solve them.
All oil is an oxidizing oil and through reaction with oxygen of the atmosphere it dries and hardens (drying oil). Oxidation occurs in three phases: liquid, gum and solid. Tank cleaning should be therefore executed as soon as possible after discharge
Certain impurities result in discoloration of the wall wash sample. The colour of the wall wash liquid is compared with unused wall wash solvent. Mostly the so-called Alpha colour is measured.