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Expanding the facilities at Rio Tinto’s Silvergrass and Nammuldi mines

Silvergrass East Mine diesel and lubrication facilities

Client

Rio Tinto

Location

West Pilbara, Western Australia

About The Project

Rio Tinto’s Silvergrass East iron ore mine in Western Australia’s West Pilbara region has been operating since 2017 and has added a further 10 million tonnes to the company’s production capacity. Rio Tinto commissioned new non-process facilities at the mine’s services area and at the Nammuldi Central Mine services area. The scope of work included:

  • A HME workshop extension;
  • New light vehicle workshop;
  • Upgraded LME refuelling facility; and 
  • A new bulk fuel storage and refuelling facility. 

CNF was brought on board by EIG Australia to complete the electrical, instrumentation and control systems design, program and commissioning. 

The systems included:

  • Two HME lubrication racks;
  • Four LV lubrication racks;
  • Five 200kL diesel storage tanks;
  • Unloading and dispensing pumps;
  • Motor control centre;
  • Field instrumentation;
  • Programmable Logic Controllers (PLC) and panel;
  • HMI displays;
  •  Rack control panels; and 
  • Tank gauging system.

Resources and Links

Major Achievements

  • Electrical modelling including maximum demand calculation, power cable sizing, circuit breaker selection and circuit breaker protection settings.
  • Motor control centre, PLC panel and rack control panels drawings – single line diagrams, schematic diagrams, termination diagrams, general arrangement drawings and cable schedules.
  • Motor control centre, PLC panel and rack control panels FAT testing, functional specifications, PLC I/O lists.
  • Electrical system commissioning assistance.
  • Control system programming, FAT and SAT.

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