Common Boiler Deposits

Deposition in power plants is most likely the least understood aspect of the operational cycle chemistry applicable to these units during commissioning. Having a complete understanding of the subject is a key factor for the performance of an effective chemical cleaning and the chemical treatment program to be applied. This will represent the fundamental building blocks for the success of the steam conditioning process and further reliability of the chemistry cycle during operation.

For this matter, knowing the nature of the deposit is of significant importance aspect to take into consideration. Most prevalent deposits compounds found in power plants are corrosion products of iron oxides, cooper oxides and derivatives formed as a result of lack of conservation during construction, improper preservation procedures, and deficient water treatment programs.
The following table lists crystalline compounds and other materials that have been observed in water formed deposits of steam generation equipment