Boral Quarry Operations Optimization

Boral's Charlton quarry in Victoria, Australia—one of the few hard rock quarries in the region capable of producing notable volumes for regional infrastructure projects—was running on aging electrical and motor control equipment that had reached end of life. Legacy systems offered limited diagnostics, required extensive manual intervention, and created compliance and arc flash safety risks. Downtime during fault-finding was measured in hours, not minutes, and the manually controlled process constrained operational visibility. With roughly one billion tonnes of quarry reserves across its Australian network, Boral needed a modernisation path that minimised on-site commissioning disruption while meeting current safety and compliance standards.

Boral engaged electrical contractor SS Electrics and Rockwell Automation—via distributor NHP Electrical Engineering Products—to deploy an Allen-Bradley CENTERLINE 2500 Motor Control Center (MCC) with IntelliCENTER technology. The 12-column MCC incorporated E300 Electronic Overloads, SMC Flex soft starters, POINT I/O modules, Guardmaster safety relays with ArcShield arc flash protection, Stratix Ethernet switches, a ControlLogix control system, and PowerFlex 525 variable speed drives for crushers, conveyors, and processing equipment. The MCC was assembled in Rockwell Automation's Shanghai facility, pre-tested and programmed using Studio 5000 software at SS Electrics' Ballarat workshop, and shipped to site as a pre-built portable room—arriving approximately 75% commissioned and significantly reducing on-site engineering time.

Commissioning proceeded without significant production disruption, and the Charlton quarry immediately gained real-time operational visibility it had not previously had. Key outcomes included:

• Fault-finding time reduced from hours to minutes, directly lowering unplanned downtime costs
• Fully automated process control replaced what had been a heavily manual operation
• Real-time energy consumption and production trend monitoring enabled active plant optimisation by the plant manager
• Improved safety compliance through ArcShield arc flash protection and Guardmaster functional safety relays

Boral's Asset Manager confirmed the project met its core objectives of replacing end-of-life equipment while minimising downtime, and Boral subsequently announced plans to replicate the solution across additional quarry sites.

• Pre-commissioning off-site dramatically compresses deployment timelines—arriving 75% commissioned meant minimal disruption to active quarry production.
• Integrated diagnostic visibility converts reactive maintenance into proactive management; fault resolution dropped from hours to minutes once real-time data was accessible.
• Arc flash and functional safety requirements should be designed in from the start, not retrofitted—ArcShield and Guardmaster were core to compliance, not optional additions.
• Proven contractor relationships accelerate complex upgrades—SS Electrics' prior experience with Boral quarries reduced project risk and commissioning time.
• Pilot success drives portfolio rollout: a single-site win with measurable outcomes gave Boral confidence to extend the programme to other quarries.