What Does Field Signature Monitoring (FSM) Mean?
Field signature monitoring (FSM) refers to a collection of preventative measurement techniques that are used to examine changes in wall thickness between sensing pins installed on a pipe or vessel. It is generally used to identify both uniform and localized corrosion.
Field signature monitoring may also be known as the field signature method.
Corrosionpedia Explains Field Signature Monitoring (FSM)
Field signature monitoring (FSM) as an inspection technique is nondestructive in nature and can be used to interface online electronic data reporting platforms.
However, FSM generally has low accuracy at identifying instances of pitting corrosion in metallic pipes and other equipment for the following reasons:
- Pitting corrosion is identified with a wide range of physical characteristics
- Poor pitting corrosion depth detection capability