Background:Metal surface immersed in natural or industrial waters undergo a sequence of
processes in time and space that lead to the formation of biological and inorganic (scaling) deposit adhesion
of different microorganisms (bacteria, microalgae, fungi) on the metal surface through extracellular
polymeric substances, causing microbiologically influenced corrosion. The biofilm formation and
microbiologically influenced corrosion impact on economic interests and after inorganic corrosion they
are the most important problems affecting different industries. The eradication of biofilm in the industry
is difficult and costly. Technological importance in the thermoelectric industry by biofilm and biofouling
formation lies in energy losses in heat exchanger systems. In the oil industry, problems derived from
the presence of biofilms as filter plugging, corrosion in structures storage and distribution of fuel are
presented. The aim of this work is to show the different industry cases of microbiologically influenced
corrosion: jet aircraft fuel storage tanks and distribution plant, steel plant, thermoelectric industry. The
evaluation of microbiologically influenced corrosion and the biofilm formation are investigated.
Methods: Microbial counts were performed by conventional techniques. The formation of the biofilm
and the attack on the metal surface were studied through scanning electron microscopic techniques.
Results: Different results were obtained for each of the industrial environments studied.
Conclusion:Strategies to evaluate corrosion problems systems are proposed through microbiological
and physical-chemical studies.