Mexican legislation specifically establishes very particular measures in order to prevent and/or to mitigate the potential environmental impacts produced by geothermic exploratory drilling. During 1991, we developed an environmental impact assessment study to evaluate the possible environmental impa
Deterioration of materials in geothermal fields in Mexico
✍ Scribed by B. Valdez Salas; M. Schorr Wiener; L. Rioseco de la Peña; M. Navarrete Bedolla
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- German
- Weight
- 339 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0947-5117
No coin nor oath required. For personal study only.
✦ Synopsis
Mexico is the third world producer of geothermal electricity. The power generation infrastructure installed for the exploitation of geothermal steam, includes a wide variety of materials for fabrication of equipment and structures exposed to a very aggressive, geothermal environment. In the geothermal fields of Mexico there are several microorganisms causing corrosion of carbon steel (CS) and stainless steel (SS) and biodeterioration of composite materials: fibre-glass reinforced polyester (FGRP) and steel reinforced concrete (RC). These microorganisms were isolated from natural geothermal environments, identified and utilised in simulated corrosion and deterioration laboratory investigations. Metallographic analysis and SEM were performed to determine the morphology of microbiological attack on SS. Electrochemical corrosion tests showed that the bacteria induced corrosion on UNS S31600, preferentially at grain boundaries.
The composite materials underwent physico-chemical deterioration processes promoted by the harsh environmental field conditions, involving microorganisms.
Mexiko ist der drittgro
Èûte Erzeuger von geothermischer Energie. Die Krafterzeugungsinfrastruktur, die fu Èr die Nutzung des geothermischen Dampfes installiert ist, entha Èlt eine groûe Palette von Werkstoffen fu Èr die Herstellung von Anlagen und Bauteilen, die einer sehr aggressiven geothermischen Umgebung ausgesetzt sind. In den geothermischen Feldern von Mexiko gibt es zahlreiche Mikroorganismen, die Korrosion am Kohlenstoffstahl und am nichtrostenden Stahl sowie Biozersto Èrung von Verbundwerkstoffen, d. h. Glasfaserversta Èrkter Polyester und Stahlbeton, verursachen. Diese Mikroorganismen wurden von den natu Èrlichen geothermischen Umgebungen isoliert, identifiziert und in simulierten Laboruntersuchungen eingesetzt
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