State of the art electrical upgrades boost mine uptime
Sustainability, employee protection and operational insights are the drivers of a cutting-edge electrification upgrade at BHP BMA’s Goonyella Riverside Mine in Queensland. At the BHP-Mitsubishi Alliance (BMA) conjoined metallurgical coal mines Goonyella and Riverside in Queensland’s Bowen Basin, Subra Nedunuri is responsible for delivering capital electrical projects without compromising environment, safety, quality, or mining schedules. When a 43-year-old section of Goonyella Riverside’s power infrastructure became unreliable, Nedunuri began designing an upgrade with ABB state-of-the-art capabilities which protect employees, equipment and the environment, and enables predictive maintenance of 16 pumps critical to the mine’s operation. Subra brings a wealth of business and engineering qualifications to the role of Senior Project Manager at Goonyella Riverside Mines (GRM). He says these are complex projects as their complexity and value to the mines are disproportionate to their cost of implementation compared to other projects. “A rehabilitation project to move earth from one side of the mine to the other may cost $20 million, but in contrast this $3 million electrical upgrade can save lives and hundreds of millions of dollars in downtime.” To power the coal wash treatment plant, pumps are used to direct water for reuse or into tailing dams, without them the plant can’t operate. In the past, the now obsolete electrical system communicated only three states of condition for the pumps operation – “On”, “Off” or “Fault”. The system had no protection against arc flash incidents (explosive releases of energy when an electrical arc travels through ionized air to ground or another part of the electrical system), which endanger the lives of service technicians and nearby workers. For the upgrade, BMA had a wishlist of not only the safest switchgear to protect its employees, but a human-machine interface (HMI) that would enable remote and onsite monitoring and control of the electrical […]