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Corrosion can lead to failures in plant infrastructure and machines which are usually costly to repair, costly in terms of lost or contaminated product, in terms of environmental damage, and ultimately it may be costly in terms of human safety. The rate of corrosion dictates how long any process plant can be usefully and safely operated. The measurement of corrosion and the action to remedy high corrosion rates permits the most cost effective plant operation to be achieved while reducing the life-cycle costs associated with the operation. Corrosion monitoring techniques can help in several ways:
By providing an early warning that damaging process conditions are developing
By revealing the correlation between changes in process parameters and their effect on system corrosivity
By diagnosing a particular corrosion problem, identifying its cause and the rate controllingparameters, such as pressure, temperature, pH, flow rate, etc.
By evaluating the effectiveness of a corrosion control/preventionprogram
By providing management the informationnecessary to relate maintenance requirements to ongoing conditions of Operation
