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Flooded Member Detection by gamma source allows for offshore platform members to be inspected for flooding as a result of cracking, damage, corrosion or weld defect, without the need for high levels of cleaning required by other methodologies. As such, a more tailored inspection plan can be prepared for more detailed investigation as well as other inspection tasks and techniques.
The PMAC ROV-mounted FMD system uses a range of small radioactive sources to cover member sizes from 150mm up to 3m diameter. The ROV mounting frame is variable to allow for members at any angle to be tested. Our proprietary software package analyses and records the data quickly and efficiently allowing for production of a report within hours of completing a work scope and single member results within minutes.
The ROV-mounted FMD system operates on the principle that a collimated beam of radiation is transmitted through the member and received by the detector at the other side. The strength of the received beam is compared with computer predic-tions for a dry or flooded member.
Laboratory and In-Field Technologies for Scale, Wax, Corrosion and Microbiology
Our FMD technicians hold SEPA Radiation Protection Supervisor qualifications as well as other regulatory requirements for the region of operation to assure safety. FMD Technicians may also hold other qualifications such as CP or CSWIP, enabling them to fulfil multiple roles on a vessel, saving on time, bed space and ultimately, cost.
Cathodic Protection (CP) and Flooded Member Detection (FMD) surveys of Subsea Pipelines and Structures
The advantages of the system include, but are not restricted to, the following:-
System Capabilities / Practical Uses Overview:-