SUBSEA
CP & MPI

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SUBSEA (CP) CATHODIC PROTECTION SURVEY

 

Cathodic protection (CP) is a technique used to mitigate the corrosion of a metal surface by making it the cathode of an electrochemical cell.

The simplest method to apply CP is by connecting the metal to be protected with a piece of another less noble “sacrificial metal” to act as the anode of the electrochemical

At Core-IRM our skilled team of subsea technicians, can carry out full CP surveys on structures and/or pipelines as applicable, in line with our clients requirements, industry accepted standards and as per the relevant governing bodies guidelines and requirementscell. The sacrificial metal, anode, then corrodes instead of the protected metal, cathode. For structures where passive galvanic CP is not adequate, for example in long pipelines, an external DC electrical power source can be used to provide current. Cathodic protection systems are used to protect a wide range of metallic structures in various environments. Common applications are; steel water or fuel pipelines and storage tanks, steel pier piles; ship and boat hulls; offshore oil platforms and onshore oil well caissons. Another common application is in galvanized steel, in which a sacrificial coating of zinc on steel parts protects them from corrosion.

 

 

Core-IRM Pte. Ltd. Have been operating in the Asia Pacific region since 1995. In this time we have carried out many surveys for class authorities.

 

It is this experience and expertise we offer to our clients for use on their facilities.

 

We are certified by internationally recognised Class Societies and personnel training both external and in house is perpetual to ensure our team continue to supply accurate information both onsite and incompliance with the reporting format you require.

 

 

SUBSEA (MPI) MAGNETIC PARTICLE INSPECTION

 

 

An Introduction to and a brief history of MPI

To detect surface breaking defects or in some cases, near surface defects, in ferromagnetic materials, magnetic particle inspection is the method employed.

 

 

 

In the dark ages of inspection, a hammer was used to strike a component, and depending on the tone heard,  it was determined if a defect was present. The advance in penetrant inspection came quite by accident. It was noticed one day, when a railway wheel, which had been left in a pool of oil, was picked up, it would become covered in a thin layer of dust, this dust tended to draw the oil out of the cracks and cavities, which were present on the wheel surface. This became known as “penetrant inspection”. Soon after, it was found that if the item was magnetised, then a more sensitive method of inspection could be used. This method has been developed and is now called Magnetic Particle Inspection (MPI)

 

 

At Core-IRM our skilled team of subsea technicians, are qualified in line with internationally recognized and industry accepted standards & qualifications, we carry out in house training at our Singapore facility and also utilize external qualified and approved training schools, the information gained through these courses is backed up by further onsite training.

 

This means that we can supply competent and professional technicians, that will execute the job safely and provide an accurate reporting package in line with our clients requirements and as applicable to the satisfaction of any governing bodies  or classification societies rules and regulations.

 

 

 


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