دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

v: to overcome the positive electrical potentials of anodic areas in cathodic protection systems.

n: (C) the ratio of an impressed electrical charge on a conductor to the change in electrical potential;measured in farads. See capacitor.

n: a means of preventing the destructive electrochemical process of corrosion of a metal object by using it as the cathode of a cell with a sacrificial anode. Current at least equal to that caused by the corrosive action is directed toward the object, offsetting its electrical potential.

impressed current that offsets the current produced in a corrosion cell and reduces corrosion.

n: a commonly used nonpolarising electrode used in corrosion control to measure the electrical potential of a metal structure to a surrounding electrolyte to determine the potential for corrosion damage or to monitor the effectiveness of existing control measures. See half-cell.

n: voltage.

n: electrolytic cell created by the difference in electrical potential between two dissimilar metals.

n: a technique used to measure instantaneous corrosion rates by changing the electrical potential of a structure that is corroding in a conductive fluid and measuring the current required for that change.

n: any small device that, when brought into contact with or inserted into a system, can make measurements on that system. In corrosion, probes can measure electrical potential or the corrosivity of various substances to determine a systems corrosive tendencies.

n: a steering tool device that id lowered on the end of a conductor line to fit inside the orienting sub.