To many people involved in the Oil and Gas production and refining industry, the terms monitoring and inspection are used interchangeably when referring to corrosion issues. However, this lack of differentiation can lead to misunderstandings and errors. It is our contention that a clear differentiation is needed and that engineers should strive to use the correct terminology.  In order to achieve that differentiation it is necessary to first define these terms ‘corrosion monitoring’ and ‘inspection’.  A review of some of the named techniques and methods used in these areas will help to consolidate an understanding of which terms fall into the inspection bracket and which are viewed as corrosion monitoring devices.

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