J+S Subsea supplies three subsea battery-powered control systems

Kintore-based subsea controls specialist J+S Subsea has completed a project in Canada that involved the supply of three subsea battery-powered control systems to maintain integrity of the subsea electrical infrastructure when topside electrical power is unavailable.

The project was delivered with partners Viper Innovations, Verlume, Richmond Mills Fabrication and MH Engineering (Fife).

The work scope included the design, engineering, manufacture, marinization and testing of subsea-deployed systems that will maintain continuous application of Viper Innovations’ V-LIFE technology. The electrical passivation signal maintains the electrical integrity of the field and satellite extensions 350 km offshore Canada, while the FPSO vessel is disconnected from the system during scheduled maintenance.

J+S Subsea says its systems can be recharged on the deck of a construction support vessel or onshore, via the supplied charger, and redeployed for a further 90 days. Each system consists of a Verlume-supplied subsea battery and separate J+S Subsea control unit housing Viper’s V-SLIM (subsea line integrity monitor), with mating electrical flying leads, housed in a steel frame constructed in accordance with DNV regulations.

Central to quick delivery of the time-critical project, according to the company, was the ability to capitalize on the availability of components in J+S Subsea’s Legacy Locker, an open industry portal for the reuse, refurbishment, repurposing and recycling of subsea equipment.

Verlume CEO Richard Knox added, “Through the integration of our Charge compact subsea battery with the technologies of both J+S Subsea and Viper Innovations, we were able to collaboratively solve client power delivery challenges by ensuring reliable delivery of subsea power on the seabed.”