Having exposed the requirement of effecting a constant monitoring of the work of cathodic protection, in order to prevent corrosion of installations submotted to the agressivity of soil and of fluids (pipelines, well casings, sea-port installations, heat exchangers, etc), the authors describe two French long distance monitoring plants. The GEPROCAT and PC TEL systems, developed by 'SAUR' and 'GAZ
... [Show full abstract] de FRANCE', are specially well adapted, with their 'Alarm' and 'Restitution of data' functions, for controlling cathodic protection of various structures. (English summary)