Subsea corrosion monitoring unit for Heidrun North Flank

FSM has been used for subsea pipelines since 1994

Topside or buried FSM corrosion monitoring is more reasonable than you may think FSM-IT - the new NDT technology - competes with ultrasound and radiography The PC software for FSM programming and analysis Corrosion monitoring by measuring electric current - how does it work?

Corrosion Monitoring using FSMTM

FSMTM (Field Signature Method) is CorrOcean’s unique, non-intrusive technique for monitoring changes in a pipe wall over a relatively large area of pipe. The technique can also be used for storage vessels or any other metallic structures.

By inducing an electrical current into selected sections of your structure,  FSM monitors changes in the electrical field pattern due metal loss from general corrosion, pitting, erosion or other phenomena.

FSM Applications

Oil and gas pipelines - FSM detects corrosion at the most critical location, usually near the well head where corrosion may not even be correlated with topside conditions.

Process oil and dry gas transportation pipelines - it should be possible to design without corrosion allowance and without intelligent pig facilities - and with FSM you have the required safety

Tanks and storage vessels - FSM measures corrosion in any structure that can be electrically energised ont>

Bends, T-bends, tanks, odd shaped pipe sections - FSM is not affected by the shape of the inspected item, because it measures the accumulated change from the first measurement

Subsea, topside, buried, as a portable inspection tool - there is always an appropriate FSM package to fit your needs.

FSM pipeline in the desert. Can be solar cell powered.

FSM in subsea tunnel for a wet gas project

Buried pipelines are ideal for FSM, which has no consumables.

System Features

FSM has a high sensitivity and accuracy (about 10 times better than UT) and will detect increased corrosion rates at an early stage, and allow corrective action before corrosion damage takes place.

Continuous corrosion monitoring is an efficient tool for optimising the use of corrosion inhibitors.

FSM detects corrosion of the entire surface area between the electrodes installed on the pipe wall. The attack does not have to be localised to specific spots (under sensor) in order to be detected,

FSM can be used for high temperature applications without drift in the readings or reduction in the accuracy.

FSM Equipment

FSM is available as subsea, topside or buried installations, and as a portable inspection tool - FSM-IT.