Nyrstar Port Pirie Transformation Project HV Cable Relocation

Facts

  • Completed in May 2015.
  • > $1.4M value free issue cable.
  • 20T of cable.
  • 410m of trenching.
  • 65m³ of red concrete.

Scope:   

Located at the Nyrstar Smelting Facility, as part of the Transformation Project, a new furnace building and a major pipe rack are to be installed in close proximity to existing 6.6kV Paper Insulated Lead Sheathed cables. The scope of work includes the replacement and re-route of HV cables. The scope of work included the Slag Fuming Plant, Blast Furnace, Acid Plant and General Office substation.

Slag Fuming 6.6kV Cables

  • Excavate 250m of trench through the existing site with approximately 30 existing in-ground services.
  • Install two lengths of approximately 250m of 300mm² 3C SWA XLPE copper cable.

General Office Substation to Workshop Substation

  • Excavate an additional 70m of trench through the existing site with approximately 10 existing in-ground services.
  • Install two lengths of approximately 150m of 300mm² 3C SWA XLPE copper cable.

 Workshop Substation to Blast Furnace Substation

  • Excavate an additional 50m of trench through the existing site with approximately 10 existing in-ground services.
  • Install two lengths of approximately 150m of 240mm² 3C SWA XLPE copper cable.

New Blast Furnace Substation to Acid Plant Substation

  •  Excavate an additional 40m of trench through the existing site with approximately 10 existing in-ground services.
  • Install one length of approximately 170m of 185mm² 3C SWA XLPE copper cable.

All Re-Routed Services Included:

  • Manually excavate to expose existing cable.
  • Supply kits for underground cable splices and splice cables.
  • Test cables and joints, continuity of earth screens and phase rotation and phase displacement.
  • Supply and install protection for cabling and compact the excavation. Reinstate concrete surface with reinforcing at 250mm thick red concrete to highlight the HV cable route.