Project Details
| Client: | Ok Tedi Mining Limited |
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| Duration: | 3 Years |
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| Situation: | OTML required an upgrade of their HV feed to the site including the 132kV connection, main transformers and 33 /11kV main switchrooms. Changes to their processing requirements also meant that all mills were to be upgraded from DOL starts to HV VSDs. |
| Our Role: | Through sister company, Nexus Engineering, Engenuity assisted with the detailed design, construction planning and commissioning of these major upgrades at Ok Tedi. For the supply upgrade this included 2 x 75MVA transformers, 132kV switching units, 2 main HV switchrooms, with over 63 panels of HV switchgear combined, associated SCADA and remote switching systems. For the mill upgrade the same support was provided for installation of 4.2 MW VSDs on each mill drive. |
| The Outcome: | Engenuity worked together with our sister company in PNG, local contractors and OTML personnel to deliver the project. In particular, the project location meant that experience and critical thinking had to be applied to ensure that construction could be executed considering the remote logistics and need for in-situ builds to reduce downtime. The upgrades were completed in 2018. |
