NES method v others
There are and have been over the last 20 years many so called "Miracle" tank cleaning methods. For the most part these consisted of injecting crude oil under pressure, with and without chemicals into crude oil storage tanks. The methods vary from nozzles through the manways to injection via the roof legs. These methods for desludging a tank already heavily contaminated with wax and solids do nothing for the oil refinery down stream. Refineries have found that whilst all the wax and solids in their tanks has disappeared is is only an allusion and it all reappears downstream and causes major problems.
If this type of method is used from day 1 of a crude tank's life then fine as it never allows solids to settle and the relatively small amount of solids are easily handled through the refinery down stream system. But take a tank with large build up of solids and wax, mix it all up resuspend it or do whatever else you like, the fact of the matter is that the solids are still there. In fact what has now happened is that all these solids have been mixed with what was good crude oil and contaminated that as well.
Even after these methods have been used and the manways are removed is the tank empty? the short answer is no, there is still a large quantity of oil etc left in the tank. Now the tank has to be cleaned by whatever method available.
With the Nes Method, we clean the tank out, remove the solids and give the refinery clean uncontaminated oil that will not clog up the down stream refining process.
Wouldn't it have been a lot easier to use the NES method? yes and less expensive - yes and much quicker. The answer is simple use the NES Method.
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