Completion of Gear Box for Legs
13 January, 2011
The Forward Gear Units of the 90metre Jack-up were successfully installed on the last day of 2010 by PV Shipyard engineers, in a strictly safety condition. At start, the installing work conducted under high prudence based on careful aligning calculation without having direct onsite guidance and supervision of the manufacturer (Le Tourneau).
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Photo 1: Connect Turkey Roaster and Release air gap for motor brake
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Photo 2: Gear unit Commission and posion fitting check between pinion Gear and Rack |
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Photo 3 &4: Installing Gear unit on the leg and connect with temporary electricity
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Photo 5: Align the fitting between pinion gear and rackbost on the leg |

Photo 6: Reinforce the position of Gear Unit |
Inherit the experience, PV Shipyard continued installation work with the Starboard Gear Units, which took only one week to finish. Le Tourneau experts showed their satisfactory attitude with the installation result and alignment statistic solely made by PV Shipyard engineers when presenting on site on December 31, as well as encouraged the company to independently carry on the similar job.
The remaining Port Gear Units is planned to complete within January with hoping of being ahead the schedule by the experience gained from the prior success. This result again affirmed the prominent ability of PV Shipyard engineers in sharp- minded and active performing to the new and high technology requirement of the project.
4 Gear Units formed a set of Gear Unit for a leg, known as jacking system to support the elevation of the rig which lifts 8,000MT to the maximum height of 140 meter as propelling. The installation required absolute accuracy of alignment and integrity among 3 legs.