Underground De-Watering Two Stage Pumping Stations - Imperium Engineering

AS/NZS ISO 45001:2018, AS/NZS ISO 9001:2015
  • Project name :Underground De-Watering Two Stage Pumping Stations
  • Client :Western Areas
  • Project Location :Cosmos Mine, Leinster Western Australia
  • Staff:Jarrad, Alan, Jarred
  • Start date :1 May 2019
  • End date :12 Dec 2019


Western Areas needed to assess an un-tapped ore body at their Cosmos Nickel Underground Mine. The scope entailed 2 Separate MCC’s, both servicing 3x 11kV 250kW Duty/Standby VVVF Pumps on 2 separate levels to evacuate surplus water from the Underground Mine. Along with close consultation with the clients’ pre-selected Process/Mechanical Consultants, services included Electrical Project Management, Engineering, Design and Commissioning of the Electrical, Instrumentation and Control System. Brownfields components entailed modifications to the existing power station & underground power infrastructure, plus communications infrastructure to enable seamless interface to clients assets.


The project was delivered on time, under budget and commissioned to a state whereby the client’s site electrical supervisor could safely take ownership. Imperium also provided and compiled an Electrical Installation Scope of Work for the client to tender with, a Power System Study Report and ongoing Engineering support thereafter to re-assure the client that we stand by our products and services.

How We Did It Better

Imperium actively engaged the client every step of the way of the project to ensure both parties are confident with the project direction. The longest long lead items were the seven (6 plus 1 spare) 250kW 1000V AC VSDs and 12 filters. Negotiating on the client’s behalf with VSD manufacturers we were able to jump to the front of the manufacturing cue, delivering in the required time frames. The MCCs were designed with electrical operators in mind considering the harsh underground environment, room for EI&C expansion, and ease of operability. Imperium managed to save the client over 50% total cost of Engineering and Supply of Equipment for this project.