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Buoy supported riser installed at Guara-Lula

Automation systems pro- of four submerged buoys each controller to make adjustments vider Cougar Automation weighing approximately 2000- to the position of the buoy has developed and tonne, laying about 300m below using the tensioners, via visual commissioned a control sea level. monitoring and control using system for Balltec to use Cougar Automation was surface-mounted touch-screen on the frst buoy sup- commissioned by Balltec to human machine interfaces. ported riser (BSR) system design a dedicated control and The surface control system is installed on Brazil’s automation system, consisting also able to automatically inter-

Guara-Lula project. of a surface-mounted primary rogate and identify the exact ten-

Guara-Lula is the larg- control that would control the sioner it is connected to, as well est engineering, procure- movement of the buoy support as generating advanced statisti- ment, installation and system via tether adjustment, cal reporting, operational and commissioning subsea using a linear chain tensioner. historical data for convenient umbilicals, risers and This was required in order to trouble-shooting and audits. fowlines contract ever to manage the tension in the risers. The control system can also be awarded in Brazil. The system allows surface make rapid decisions in real-time

Operated by Petrobras control of the subsea tensioner to protect the equipment and and located in Santos system via an ROV. Once over- facilitate safe operation; which

Basin about 100mi of the boarded, the ROV facilitates a human would be incapable of. coast of Rio de Janeiro, establishment of the data path- This includes highlighting of any the BSR system consists way linking the surface control anomalies to the operator and to the subsea control modules. the generation of events during

The surface control is then used normal operation. This ensures

Buoy supported riser to efect buoy movement as that the system can be protected tether adjustment, using a linear chain tensioner. required against any damage quickly and

Photos from Cougar Automation.

The system enables the efciently. •

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