Baseline atmospheric corrosion in the Geothermal Plant Las Pailas, Guanacaste, Costa Rica.


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Bibliographic Details
Author: Rodríguez Yáñez, Javier E.
Format: artículo original
Status:Versión publicada
Publication Date:2015
Description:During the construction of the Las Pailas geothermal plant, atmospheric corrosion was evaluated for 5 years. Atmospheric monitoring and gravimetric analysis with low alloy steel (ASTM A36), were done according to ISO 9223 and its associated procedure. There were low values of pollution by chlorides and sulfates, around 5 mg m-2 día-1 and without important levels of acid rain, despite the proximity of an active volcano, which indicates an atmosphere of “rural type”. TDH’s level was 60 %, initial corrosion speed was 40 μm year-1, and this estabilized after 3 years in 20 µm year-1, with protective oxides. The accumulated corrosion estimated by the model meet ISO Corroag of ISO 9226. The Matlab model produced a best adjustment exponential model with a time dependence factor of 0,89. 
Country:Portal de Revistas UNED
Institution:Universidad Estatal a Distancia
Repositorio:Portal de Revistas UNED
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Keyword:Atmospheric corrosion
steel ASTM A36
ISO 9223
ISO 9224
ISO 9225 and ISO 9226.
Corrosión atmosférica
acero ASTM A36
ISO 9225 e ISO 9226.