Anode systems with monitoring stations
The nature of inspecting deep water assets has led to increased demand for monitoring setups along with longer anode life. To address this need, Deepwater has designed several large anode systems with built in monitoring stations, which can provide up to 45 years of cathodic protection.
Anode material placed at a distance can be connected to several assets. By keeping anodes off the structures themselves, designers can amass enough sacrificial material to last many more years. Reference electrodes secured at critical points on production equipment are routed back via the same Retroclamp which connects the anode sled. After initial installation, ROVs can monitor a large area from a single point, without the need for a CP probe.
On a recent project, Deepwater designed four large anode sleds with six Sunstation readouts on each sled. Each readout displayed the reading from an electrode placed on a subsea well. After the install, the ROV could interpret the results for critical areas throughout the entire field from the perimeter of the field,
Sunstation readouts are powered by the lights of the ROV through underwater solar panels in pressure housings. They require no batteries and no cathodic protection survey equipment. ROVs will be able to monitor the anode potentials throughout the 45 year life of the anode sleds.