Pitting Corrosion Boiler Tubing

Our customer the Serbian Heating Plant Sabac wrote the following report:

Now that we have opened the boilers, an inspection in the boiler itself. Having made a comparison of the pictures of the same surfaces, we can say that the ring is as effective as claimed by the representatives of the company ''HPL DOO''. On the surfaces of the tubes there are no more ''yellow coatings'', under which oxygen corrosion occurs and craters are formed in them. On the contrary, the pipes are covered with a black film of magnetite, which acts as an anti-corrosion agent.

When inspecting the areas in boilers number 2 and number 3, we find that this situation has not changed compared to previous years. The surfaces have ''yellow coatings'', which means that oxygen corrosion ''pitting'' is severely destroying the pipes.

Based on the above, we believe that it is necessary to purchase a Merus ring for all three boilers. In order to protect the flue tubes in the boilers, thus saving important material resources for their replacement. We have done this process several times and know how complicated it is in terms of preparing documentation and permits, as well as how much it costs.