CESCOR provides underwater cathodic protection inspections, including proprietary and patented instrumentation to be installed on ROVs or handled by divers, including – probes, electronics, software – and EN 15257 certified personnel for the execution of inspections.
Applicable techniques include:
These methods, properly combined, allow to assess the protection level of the structure and to detect coating faults.
Typical inspected structures are:
The services we provide include the issue of the Inspection Specifications and of the Inspection Report. Where deemed convenient, inspection results are interpreted using FEM modelling.
A very specific application of Cathodic Protection is the retrofitting of in-service offshore platforms, which strongly differentiates from the case of new structures because of the constraints represented by underwater installation.
CESCOR has executed numerous retrofit projects around he world experiencing different solutions, both with galvanic and anodes and with impressed current. Amongst impressed current systems, the most effective solutions are:
In all cases, the optimal design of the most convenient retrofit system is also based on FEM modeling or BEM modeling, in order to optimize the positioning of the anodes and of the permanent reference electrodes to be used for monitoring the protection conditions.