As mining and industrial operations look for ways to improve productivity, extend asset life and minimise unplanned downtime, maintenance strategies are increasingly shifting from reactive intervention towards proactive asset management. One area where this approach can deliver significant value is in the inspection of silos and bulk material handling infrastructure following cleaning.

For Bongela Mining & Industrial Services, silo cleaning is not simply about removing accumulated material and restoring lost capacity. It also creates an important opportunity to inspect the condition of the structure and identify issues that may otherwise remain hidden.

Cleaning creates visibility

Material build-up inside a silo can progressively reduce effective capacity, restrict material flow and contribute to operational bottlenecks. As accumulated material is removed, however, another benefit becomes apparent: areas of the asset that were previously concealed become accessible for inspection.

“This is where a SIMM inspection becomes an integral part of the post-cleaning process,” comments CEO Raymond Graham. With the interior of the silo cleared, inspection teams can assess areas that may have been obscured by accumulated material and identify potential concerns such as wear, corrosion or structural defects.

Early identification gives operators the opportunity to address these issues before they develop into more significant maintenance problems. “Rather than treating cleaning and inspection as two unrelated maintenance activities, integrating the two provides a more complete picture of asset condition,” says Graham.

From cleaning to condition assessment

The distinction is important as a silo can be clean and have its usable capacity restored, but that does not necessarily mean the asset is in optimal condition. A post-cleaning inspection allows maintenance teams to move beyond the immediate objective of restoring material flow and consider the longer-term condition and reliability of the infrastructure.

This supports a more proactive maintenance approach. Instead of waiting for a structural or equipment-related problem to affect production, operators can identify potential areas of concern and plan appropriate interventions around existing maintenance schedules. “For operations where downtime can have a significant impact on production, that visibility can be particularly valuable,” highlights Graham.

Supporting safer, more informed maintenance

The benefits extend beyond asset reliability. A structured inspection process can provide maintenance teams with better information on which areas require attention and help inform future maintenance planning.

This is particularly relevant in demanding mining and industrial environments, where infrastructure is exposed to continuous operating stresses and where access to certain areas can present its own challenges.

Advances in specialised cleaning techniques, rope access solutions and remotely operated technologies are also changing how maintenance activities can be undertaken, enabling organisations to address difficult-to-access areas with greater efficiency and reduced disruption to operations. The result is a maintenance philosophy centred on understanding the condition of an asset rather than simply responding when something fails.

Turning a maintenance intervention into an opportunity

The post-cleaning period therefore represents more than the completion of a cleaning project. It is an opportunity to establish a clearer understanding of an asset's condition and to identify maintenance requirements while access and visibility have been improved.

For mining operations, this can support better planning around silo maintenance, material flow and production reliability. The same principle applies across other bulk material handling environments, including cement, manufacturing and industrial processing facilities. “Ultimately, the objective is to maximise the performance of infrastructure that organisations already own,” says Graham.

As the mining industry gathers at Electra Mining Africa 2026, discussions around productivity, safety, maintenance and operational efficiency will remain central to the industry’s agenda. For companies operating complex bulk material handling infrastructure, those priorities reinforce the value of looking at maintenance holistically.

A proactive approach to maintaining critical infrastructure

Silo cleaning can restore lost capacity and improve material flow. A SIMM inspection can provide the visibility needed to understand what lies beneath the surface. Together, these interventions can form part of a proactive approach to maintaining critical infrastructure, identifying potential problems earlier and extending the useful life of existing assets.

“As we continue to support mining and industrial operations through silo cleaning, repair and SIMM services, our emphasis remains on helping clients maintain, optimise and extend the performance of their critical infrastructure,” concludes Graham.