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Our Bureau

Kochi , Sept. 25

The mobile offshore drilling unit of ONGC, Sagar Vijay, sailed off from Cochin Shipyard on Saturday after successful completion of major upgradations.

Sagar Vijay was the first in the series of three major repair orders secured by CSL from ONGC. The nations prestigious rig should now commence operations at high seas armed with the latest top drive system technology. This kind of upgradation of floater rigs is unique and CSL can take pride to have achieved it for the first time in India, a press release issued here said.

The various important works executed on the rig included installation of new top drive system, which necessitated extension of the existing derrick by approximately 25 feet. Various other equipments such as iron roughneck, casing tong, automatic identification system, re-circulating cement mixer and ARPA radar were installed as part of this upgradation.

Approximately 200 tonnes of steel and 1,500 metres of piping were renewed during this repair period.

In addition, 350 valves were renewed or overhauled, 100 motors and five generators overhauled. Major overhaul of drilling and other equipments such as mud pumps, deck crane, cementing unit and draw works were also carried out in addition to routine dry dock repairs.

During the project period, the yard has also undertaken major jobs like drilling instrumentation up-gradation, air conditioning and refrigeration

Plant upgradation, anchor winch instrumentation work and installation and commissioning and navigation equipments in addition to the contractual jobs.

ONGC now possesses an upgraded rig with all the advanced automated requirements of drilling. The rig stability, consequent to the major up-gradation, was reviewed by the most experienced naval architects in the country and has been approved by American Bureau of Shipping, Houston.

With the experience gained from the work, CSL is confident that other major upgradation projects of MODU Sagar Bhushan and Jack up rig Sagar Kiran would also be successfully executed.

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