PROJECTS

OPTIMA HYDRAULICS – CURSOR FRAME

Cape Town-based Optima Hydraulics, a leading designer and supplier of hydraulic, pneumatic and control systems, awarded Belmet the contract to fabricate a cursor frame for the offshore diamond mining industry.  This cursor frame acts as a guide for a drill and suction tower section that was hydraulically driven vertically by means of motors and gearboxes through the frame onto the seabed.  To compensate for these moving parts, the frame had to be fabricated to extremely tight tolerances and specifications.

The cursor frame weighed approximately 37 tonnes with overall dimensions of 6870 mm (L) x 6870 mm (W) x 6800 mm (H).  The structure was built from Grade 350WA structural sections; Grade 300WA plate and a primary structure of tubular square sections of 400 mm x 16 mm and 300 mm x 12 mm.

The full penetration welds were 100% ultrasonic tested and Belmet achieved a zero percent weld defect rate.

The frame was completed in Belmet’s Heavy Fabrication Workshop in seven weeks, was loaded out using two  25 ton overhead cranes and delivered by abnormal road transport to Optima’s premises near the Cape Town harbour.


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