While rising fuel costs and sustainability considerations are encouraging equipment electrification, diesel engine provider YC Diesel GM Paul Lastrucci says diesel pumps remain the most reliable solution in mitigating prolonged interruptions to critical pumping functions for mines.

As a supplier of Yuchai diesel engines for generator and fire pump applications, the company has observed that mining companies are under increasing pressure to reduce carbon emissions and improve sustainability performance. As a result, he says electrification is influencing new investments, particularly for primary pumping applications where reliable power is essential.

Despite this, Lastrucci notes that diesel-powered equipment continues to play a critical role in emergency systems, fire protection systems, backup power applications and remote or off-grid operations.

In applications such as dewatering, process water transfer, tailings material management or fire protection, water movement is directly linked to production, safety and regulatory compliance, he states.

While pump systems were historically evaluated primarily on purchase prices, mines are now increasingly assessing total lifecycle cost, uptime metrics, safety implications, environmental performance and business continuity as operations recognise that resilience carries tangible economic value, says Lastrucci.

Cost-effectiveness is also increasingly evaluated against the cost of operational disruption, he adds, explaining that production stoppages can cost mines lost revenue, flooding incidents can result in extensive recovery costs and fire system failures can expose operations to catastrophic losses.

“A dewatering pump failure can flood underground workings, halt production, damage equipment and create serious safety risks. Consequently, mines often view diesel pumping systems as an insurance policy against operational downtime,” says Lastrucci.

Diesel-driven pumps offer complete independence from the electrical grid, he states, adding that, in practice, this ensures that mines can continue operating critical systems during loadshedding, grid instability, transmission system failures or in locations with limited access to grid infrastructure.

In addition, at grid-connected operations, mines are increasingly reserving diesel-powered assets for situations where resilience and independence from electrical systems are essential, with investment decisions increasingly focusing on hybrid solutions that balance sustainability objectives against operational risk.



Remote Possibilities
At many remote areas across Southern Africa, alongside limited infrastructure, remote mines contend with challenges such as harsh environmental conditions, long distances between service centres and restricted access to specialist technicians, says Lastrucci.

Diesel pump systems are well suited to these conditions as they are self-contained and relatively simple to deploy and relocate.

They are also proven in rugged operating environments, capable of running continuously for extended periods and supported by widely available fuel distribution networks.

Owing to these factors, he says diesel pumping systems serve as the primary pumping solution as opposed to backup equipment to ensure uninterrupted operation.

Modern diesel engines can also be integrated with remote monitoring systems, enabling operators to track performance, fuel consumption, component temperatures, alarms and maintenance schedules from central control rooms, adds Lastrucci.