Emerson Roxar FSM Log 48 Area Corrosion Monitor

The Emerson Roxar FSM Log 48 Area Corrosion Monitor is a pipeline integrity management system that provides permanent, continuous online corrosion and erosion monitoring, enabling operators to track localised corrosion and ensure cost-effective pipeline health.

The Roxar FSM Log 48 — with 48 referring to the number of pins in the sensing pin matrix — is capable of distinguishing between localised and generalised corrosion, a feature that helps reduce the need for pigging and other costlier inspection methods. The Roxar FSM Log 48 has a total cost of ownership of just one typical smart PIG run of up to 10 km (although this can vary according to the PIG technology).

The Roxar FSM Log 48 continuously monitors corrosion in remote areas using WLAN and cellular data transfer protocols and has built-in solar power options that reduce maintenance and personnel requirements.

The Roxar FSM Log 48 uses the non-intrusive field signature method, in which an electric current is fed through the monitored length of pipeline to generate an electric field. The initial measurement sequence measures the voltage drop between pairs of sensing pins installed on the external pipe wall. Later measurements are compared to the field signature, where a uniform increase in voltage drops between all pin pairs indicates generalised corrosion, and a local increase in the values indicates localised corrosion. Typical detection sensitivity for generalised corrosion is 0.1% of wall thickness for outer pipeline diameters between 15 and 120 cm.