TL;DR: A drone inspection survey in Moranbah uses high-resolution and zoom-equipped UAVs to inspect the conveyor gantries, transfer towers, CHPP structures, dragline booms, headgear and TSF embankments that ring the Bowen Basin's coal mines — without scaffold, EWPs or rope access. For Anglo American and BMA operators around Moranbah it removes crews from height on live plant, compresses an inspection from days to hours, and produces a geotagged, AS-aligned photographic record. Industrial Spatial Solutions delivers it under a CASA Remote Operator Certificate, FIFO from Mackay and Brisbane, tied to your maintenance shut.
Key takeaways
- A drone inspection survey replaces working-at-height access on Moranbah assets — conveyor trusses, transfer towers, calciner and boiler stacks, dragline and shovel booms, headgear and tailings storage facility (TSF) embankments — typically cutting inspection time 60–80% and eliminating the highest-risk fall tasks under Queensland's Coal Mining Safety and Health Regulation 2017 and the WHS framework.
- ISS captures imagery at a ground sampling distance (GSD) of 1–3 mm/pixel on close-range work, resolving hairline cracking, weld toe defects, coating breakdown and corrosion to the level of a hands-on visual inspection under AS 4100 (steel) and AS 3788 (pressure equipment external condition).
- The Bowen Basin's 31 active mines around Moranbah run kilometres of overland and plant conveyor plus high CHPP steelwork, so a single sortie can image a transfer tower, the conveyor run to the next drive and the adjacent screen house in one window — building a baseline that turns deterioration into a measured trend.
- Every image is geotagged, and where geometry is needed it is tied to ground control so defects locate to within 20–50 mm on a 3D model for repeat monitoring across scan epochs.
- ISS holds a CASA Remote Operator Certificate (ReOC) with licensed RePL pilots and registered aircraft, and field staff carry current Queensland coal mine inductions — so the work fits inside your site's safety and health management system and your shut schedule.
Table of contents
- Drone inspection in Moranbah's coal country
- Where drone inspection earns its place around Moranbah
- Method and equipment for Bowen Basin assets
- Accuracy, standards and compliance
- Cost factors for a Moranbah drone inspection
- Why operators choose ISS for inspection in Moranbah
- Frequently asked questions
- Request a quote
Drone inspection in Moranbah's coal country
Moranbah was built in 1971 to house the Goonyella workforce, and it remains the town at the coalface of the Bowen Basin — the densest cluster of metallurgical coal operations on earth. Within an hour's drive sit Anglo American's Moranbah North and Grosvenor underground longwall mines and BMA's Goonyella Riverside, Peak Downs, Saraji, Broadmeadow and Caval Ridge open-cut and hybrid complexes. The Isaac Regional Council area hosts 31 active coal mines, and every one of them is built around tall, corroding, constantly running steel: coal handling and preparation plants (CHPPs), overland conveyors, transfer towers, headgear, surge bins, stacks and reclaim tunnels.
That steel is exactly the access problem a drone inspection survey is built for. A conventional close visual inspection of a CHPP screen house, a 40-metre transfer tower or a kilometre of conveyor gantry means scaffold, elevated work platforms, or rope-access technicians working over live plant and moving belts — slow, expensive, and the single highest-risk activity on most coal sites. A UAV reaches the same surfaces in minutes, flies a repeatable path, and hands the inspector a sharper view than the naked eye from a cherry picker, with the crew on the ground the whole time.
The commercial logic is just as sharp in the Bowen Basin as the safety logic. Unplanned downtime on a CHPP or a primary conveyor system runs to tens of thousands of dollars an hour, because the whole coal chain — pit to CHPP to the Goonyella rail system to the Hay Point and Dalrymple Bay export terminals — stalls behind it. A fatigue crack found early at a conveyor truss node, or coating breakdown spotted on a stack liner, becomes a planned repair in the next shut instead of a forced outage. A drone inspection lets you inspect more assets, more often, for less — shifting Moranbah maintenance from reactive to condition-based.
Key point: A drone inspection survey is not a substitute for an engineer's assessment — it is a far better, safer way to feed one. The UAV is the remote-sensing tool; the engineering judgement stays with a competent person who classifies defects against the relevant standard. ISS provides both the capture and that competent review.
Where drone inspection earns its place around Moranbah
The mines around Moranbah split into Anglo American's underground longwall operations to the north and BMA's predominantly open-cut and hybrid operations spread through the district. Both generate heavy visual-inspection demand, just on different asset types.
| Asset class | Where it sits around Moranbah | What the drone inspection finds |
|---|---|---|
| CHPP structural steel | Moranbah North, Grosvenor, Goonyella Riverside, Peak Downs CHPPs | Truss-node fatigue cracking, corroded gussets, coating breakdown, missing fasteners |
| Overland and plant conveyors | Every operation; runs of kilometres to rail loadout | Gantry corrosion, walkway and handrail defects, idler-frame damage, belt-line drift |
| Transfer towers and surge bins | All CHPPs and stockpile circuits | Lining wear visible externally, weld defects, chute structure cracking |
| Dragline and shovel booms | Peak Downs, Saraji open-cut | Boom-cord cracking, pin and pendant condition, coating failure on the boom point |
| Headgear and shaft furniture | Moranbah North, Grosvenor underground | Sheave structure, headframe steel, conveyor drift portal condition |
| TSF and tailings embankments | District-wide tailings storage | Crest settlement, seepage, erosion, spillway and pipework condition |
Anglo American's Moranbah North and Grosvenor run high-output longwall faces in the Goonyella Middle seam. Grosvenor returned to longwall production after its 2024 rebuild following the 2020 underground ignition, which placed an even sharper premium on as-built verification and external condition recording of surface infrastructure, ventilation shafts and conveyor drift portals — work a drone can do without people scaling the structure.
BMA's Peak Downs and Saraji are major dragline open-cuts. Dragline boom inspection is one of the most dangerous routine access tasks in open-cut coal: a boom is a 100-metre-plus latticed structure that crews would otherwise inspect from elevated platforms or by climbing. A UAV images the full boom — cords, lacing, pin connections, the boom point and pendant ropes — in a single controlled sortie from a safe stand-off, producing a complete record the structural engineer reviews from the office.
A drone inspection survey also pairs directly with shutdown and turnaround surveying: it captures asset condition faster than scaffold can be built, scoping the work before the shut and verifying it after. On a 48–72 hour CHPP shut, that head start is the difference between a defect making the work pack and a return mobilisation.
Method and equipment for Bowen Basin assets
A drone inspection survey is only as good as its optics, its stability in wind, and the discipline of the flight. The Bowen Basin adds its own constraints — summer heat past 40°C, fine coal and overburden dust, heat shimmer off dark coal surfaces, blasting windows and exclusion zones, and live conveyors that never stop. ISS selects payload and method to suit the asset rather than forcing one technique onto every job.
For close-range structural work, ISS flies high-stability multirotor platforms carrying mechanical-shutter RGB sensors in the 20–45 MP class. At a 5-metre stand-off these resolve a GSD of roughly 1–1.5 mm/pixel — fine enough to identify hairline cracking, weld defects and early coating breakdown on CHPP steelwork. Obstacle sensing and precise position hold allow safe work near gantry steel, energised reclaim drives and moving belts.
Where stand-off cannot be reduced — a hot stack, a dragline boom over a live pit, an energised switchyard feeding the CHPP — a long-range optical zoom payload captures the same detail from a safe distance. A radiometric thermal sensor (<0.05 °C NETD) adds anomaly detection: overheating conveyor drive bearings and motors, blocked or wet refractory in dryers, lagging defects, and electrical hot spots on transmission and switchgear.
When defects must be located on a 3D model or compared between inspections, ISS establishes ground control with Leica and Trimble GNSS and total-station equipment, the same instrumentation behind our 3D laser scanning and engineering work, and ties the inspection to MGA2020. Imagery is processed into orthomosaics and textured 3D models, with point clouds exported to LAS, LAZ or E57 when the inspection is paired with as-built scanning of the same structure.
| Do | Don't |
|---|---|
| Set ground control before capture if defects must be tracked epoch-to-epoch | Treat a folder of un-georeferenced photos as a repeatable inspection record |
| Fly close and steady enough to hold the GSD the defect actually requires | Assume sensor megapixels alone deliver detail — a 45 MP sensor at 15 m beats nothing |
| Plan sorties around blasting windows, dust events and conveyor exclusion zones | Launch without current CASA authority, site approval and an active flight notification |
| Run a coverage check against the asset map before demobilising | Pack up and discover a missed boom face only back in the office |
Key point: Stand-off distance, not sensor resolution, sets achievable detail. The skill in a Moranbah drone inspection is flying close and steady enough — safely, over live coal plant — to capture the GSD the crack or coating defect demands.
Accuracy, standards and compliance
Two kinds of accuracy matter: how small a defect the imagery resolves, and — where geometry is captured — how precisely a defect can be located. The benchmarks below are what ISS holds on Bowen Basin work.
| Parameter | ISS specification | Typical benchmark |
|---|---|---|
| Image GSD (close range) | 1–3 mm/pixel | 5–10 mm/pixel |
| Smallest resolvable defect | ~0.5 mm crack width | ~2 mm |
| Defect location (georeferenced) | 20–50 mm | 100 mm+ |
| Thermal sensitivity | <0.05 °C NETD | 0.1 °C |
| Coverage completeness | 100% of nominated faces | Spot checks |
The inspection itself is conducted against the standard relevant to the asset — AS 4100 for structural steel, AS 3788 for in-service pressure equipment external condition, AS 1418 and AS 2550 for cranes and runways, and ANCOLD dam-safety guidelines for TSF embankments. ISS records the standard applied, the inspector's competency and a measurement-confidence statement with every report.
UAV operations around Moranbah are governed by CASA under CASR Part 101 and the associated Manual of Standards. ISS operates under a current Remote Operator Certificate (ReOC) with licensed RePL pilots, registered aircraft and aviation-endorsed public liability cover, and manages every airspace and exclusion-zone approval on your behalf. On site, field staff hold current Queensland coal mine inductions and work under each operation's safety and health management system, with deliverables tied to MGA2020 and AHD so they slot into your planning and asset-management systems without rework.
⚠️ Watch out: A drone inspection does not by itself satisfy every mandated inspection regime. Some pressure-equipment, crane and TSF standards still require hands-on or NDT inspection at defined intervals. Used well, a drone survey extends the interval between intrusive inspections and targets them — it does not blindly replace them. ISS confirms the regime that applies to your asset during scoping.
Cost factors for a Moranbah drone inspection
Pricing is project-specific; ISS provides a fixed-price quote after a short scoping call. The main drivers are below, in AUD.
| Factor | Impact on cost | Typical range |
|---|---|---|
| Asset height and complexity | More faces and tighter geometry mean more capture and review | $2,000–$6,000 per asset |
| Airspace and live-plant exclusion zones | Coordination around energised plant and blasting | +$500–$2,000 |
| Required GSD | Finer detail means closer, slower flying and more images | Baseline to +30% |
| Deliverable depth | Raw imagery vs defect register vs georeferenced 3D model | +20–60% |
| Thermal payload | Adds capture and a second analysis pass | +$800–$1,500 |
| FIFO and remote mobilisation | Travel and standby to the Bowen Basin | At cost |
ROI context: A single rope-access campaign on a major CHPP stack or a dragline boom can run well past $30,000 once access, standby and downtime are counted — and it puts people at height over live coal plant. A drone inspection survey covering the same asset typically costs a fraction of that, captures more, and removes the fall risk, so the payback is usually realised on the first inspection, before any defect is even found.
Why operators choose ISS for inspection in Moranbah
Industrial Spatial Solutions services Moranbah through FIFO and drive-in mobilisation coordinated from Mackay and Brisbane, structured around the operational rhythm of Bowen Basin coal:
- Shut-aligned mobilisation — inspections are scheduled to land before equipment is stripped during a CHPP shut and to verify condition after reassembly, with inductions and travel arranged ahead of the window.
- Independent of any aircraft brand or maintenance contractor — the inspection serves your asset, not an upstream agenda; ISS recommends the payload and deliverable the defect actually needs.
- One team, end to end — the same crew that flies the UAV and aerial surveys runs our engineering and mechanical survey work, so when a drone inspection finds something that needs measuring, we bring a total station, laser scanner or photogrammetry to bear without re-engaging a new contractor.
- Coal-certified field staff — current Queensland coal mine inductions, including the competencies required for surface and underground entry where the work demands it.
- Data integration — defect registers, geotagged imagery, orthomosaics and 3D models delivered in the formats your planning and asset teams already use.
Queensland faces Australia's most acute surveyor shortage, and the state's resources pipeline and infrastructure programme — through to the 2032 Brisbane Olympics — are competing for the same shrinking pool of professionals. For Moranbah operators that means longer lead times and higher project risk with generalist firms. ISS provides specialist industrial inspection capacity built specifically for coal.
Frequently asked questions
How quickly can ISS mobilise a drone inspection survey to Moranbah?
ISS mobilises to Moranbah on a FIFO and drive-in basis from Mackay and Brisbane, scheduled around your maintenance shut or project milestone. For planned work we lock in crew, inductions and travel ahead of the window; for urgent requirements during a shut we move as fast as site induction and airspace approval allow. Where site inductions are already current, mobilisation is substantially faster.
Can a drone inspection be done while the CHPP and conveyors are running?
Usually, yes. The capture is non-contact, and most live assets can be inspected without standing down production, provided an exclusion zone is maintained around people and operating plant. Energised reclaim drives, hot stacks and switchyards are flown from a safe stand-off using an optical zoom or thermal payload, so the belt keeps running while we capture.
Does a drone inspection satisfy mandatory inspection requirements on a Moranbah mine?
It satisfies many condition-monitoring and visual-inspection needs, but some pressure-equipment, crane and TSF regimes still require hands-on or NDT inspection at defined intervals. A drone inspection survey is best used to extend those intervals and target intrusive inspections where they are needed. ISS confirms the regime that applies to your asset during scoping and records the standard applied in every report.
Which Moranbah assets and sites does ISS inspect?
ISS inspects the full Moranbah district — Anglo American's Moranbah North and Grosvenor and BMA's Goonyella Riverside, Peak Downs, Saraji, Broadmeadow and Caval Ridge, plus surrounding mines. Typical assets are CHPP structural steel, overland and plant conveyors, transfer towers and surge bins, dragline and shovel booms, headgear, and TSF embankments. We also support work further across the Isaac region at Dysart, Middlemount, Glenden and Coppabella.
Request a quote
If access, height or downtime is making your structural and asset inspections around Moranbah slow, expensive or hazardous, a drone inspection survey is very likely the safer and cheaper path — and the payback usually lands on the first inspection.
- Call ISS on 0407 057 015 — tell us the asset, the site and the defects you care about.
- Receive a fixed-price proposal — we set out payload, methodology, standards, schedule and deliverables specific to your asset.
- Mobilise to site — we coordinate inductions, FIFO travel, CASA airspace approvals and equipment to align with your shut.
For ongoing condition monitoring across multiple Isaac-region sites, ISS offers service agreements with preferential scheduling and baseline comparison reporting. Call 0407 057 015 to request a quote.
Industrial Spatial Solutions — Bowen Basin experienced, CASA-certified, defect-focused. Serving Moranbah and the Isaac region.