Intrusive and Non-Intrusive Corrosion & Erosion Monitoring for Surface Facilities



Regulatory authorities require constant evaluation/auditing of Cathodic Protection systems to ensure structural integrity. CP Surveys allow a system's ability to resist/avoid corrosion to be monitored, and any corrosion issues to be remedied before the onset of major failure.

Based on the use of the Twin Cells (TC) probe technique, the PMAC system gives real time data measurement for both subsea pipelines and structures. Continuous CP and field gradient (FG) readings can be logged simultaneously, so PMAC are able to determine the anode current output and calculate the remaining life of installed anode systems. The PMAC Subsea Digitiser utilises the latest technology, adding increased reliability.

PMAC offer full service CP surveys with equipment and trained personnel as well as user operated equipment with training and support for data gathering and analysis.


T: +44 (0)1224 703032

​T: +65 6214 3990

With selectable multiple outputs of RS232 and RS485, 24Vdc or 110vac power supply and configurable baud rates, the system is flexible to allow the electronics bottle to be mounted on almost all ROVs, or even on deck (topside) if necessary. The PMAC Acquisition software, used in conjunction with PMACs processing software and CP experience, offers a choice of data reporting and interpretation methods to meet specific client requirements. PMAC also manage an extensive database of historical data which can be used to monitor CP trends to identify areas on interest throughout the design life of CP systems.

Laboratory and In-Field Technologies for Scale, Wax, Corrosion and Microbiology   

Cathodic Protection (CP) and Flooded Member Detection (FMD) surveys of Subsea Pipelines and Structures

Our CP technicians hold CSWIP and/or NACE qualifications in Cathodic Protection to assure quality of service and may hold other qualifications such as FMD or CSWIP 3.4u enabling them to fulfil multiple roles on a vessel saving cost and bed space.