TL;DR: A drone inspection survey at Olympic-Dam puts a high-resolution, zoom and thermal-equipped UAV in front of BHP's smelter stacks, headframes, concentrator structures, tankhouse crane runways and the tailings storage facility — without scaffold, elevated work platforms or rope-access crews on a uranium-licensed site. Industrial Spatial Solutions (ISS) captures geotagged imagery at 1-3 mm/pixel, classifies defects against AS 4100, AS 3788 and AS 2550, and delivers the lot under a CASA CASR Part 101 Remote Operator Certificate. This page covers how visual inspection works at Olympic Dam, the assets it suits, the kit, the standards, and how ISS mobilises to Roxby Downs.
Key takeaways
- A drone inspection survey at Olympic Dam removes people from height and from radiation-controlled areas during data capture, typically cutting inspection time by 60-80% on assets such as the copper smelter stack, headframes, the concentrator and the TSF embankment, against the working-at-height duties under the SA Work Health and Safety (Mines) Regulations.
- ISS captures imagery at a ground sampling distance of 1-3 mm/pixel on close-range work, resolving hairline cracks, weld-toe defects, refractory and coating breakdown to the level expected of a hands-on visual inspection under AS 4100 (steel) and AS 3788 (in-service pressure equipment external condition).
- Olympic Dam is one of very few sites worldwide that runs an underground mine, a concentrator, a flash smelter and an electrorefinery on one lease, so a single shutdown can demand drone visual inspection across four distinct process plants in one mobilisation — the same trip that ISS already covers for mechanical and as-built survey.
- Every image is geotagged and, where geometry is needed, tied to the site control network so defects locate to within 20-50 mm on an orthomosaic or 3D model — the baseline for measuring deterioration on ageing 1988-era structures cycle on cycle.
- All flying is conducted under CASR Part 101 with a Remote Operator Certificate, licensed RePL pilots and management of the controlled-airspace considerations around the Olympic Dam aerodrome; indicative campaigns run from roughly AUD 2,000-6,000 per asset.
Table of contents
- Drone visual inspection at Olympic Dam
- Which Olympic Dam assets suit drone inspection
- Method and equipment for a remote uranium site
- Standards, airspace and compliance in South Australia
- Why operators choose ISS for inspection at Olympic Dam
- Frequently asked questions
- Request a quote
Drone visual inspection at Olympic Dam
Olympic Dam, 560 kilometres north-west of Adelaide near Roxby Downs, is BHP's integrated copper-uranium-gold-silver complex and one of the largest known ore bodies on Earth. It is not a single mine but a vertically integrated metals city — an underground operation reaching beyond 800 metres below surface, a concentrator, a flash-furnace copper smelter, an electrorefining tankhouse and a hydrometallurgical plant, all on one lease in the middle of the Gawler Craton. Almost every one of those structures is now decades old, having been in production since 1988, and almost every one presents the classic inspection problem: height, corrosion, heat, live plant and, here uniquely, radiation-controlled areas where putting a person on a surface is the option of last resort.
That is exactly the bottleneck a drone inspection survey Olympic-Dam programme is built to break. Instead of scaffolding a 60-metre smelter stack, standing up rope-access technicians inside the headframe, or sending a crew onto an unstable tailings crest, ISS flies a remotely piloted aircraft carrying a high-resolution RGB sensor — and, where needed, a long-range optical zoom or radiometric thermal payload — at a controlled stand-off from the surface. The aircraft reaches the same faces in minutes, holds a repeatable path, and brings the inspector a sharper view than a person could get from a cherry picker. The drone is the remote-sensing tool; the engineering judgement stays with a competent person who classifies what the imagery shows.
The remoteness is the multiplier. There is no nipping back to an Adelaide depot for a forgotten payload, and on a continuous plant the only window for close work is often the planned shutdown — when every hour of downtime carries a six-figure cost and every scaffold leg costs schedule. A single drone sortie that images the smelter stack, the adjacent transfer structures and a conveyor run in one window does in hours what hands-on access does in days, and it leaves a time-stamped photographic record that becomes the baseline for the next campaign.
Key point: At Olympic Dam the value of drone visual inspection is not just safety — it is access economics. The site only opens its plants during shutdowns, the assets are ageing, and parts of them are radiation-controlled. A UAV captures condition evidence without consuming the scaffold, permits or lock-out time that hands-on inspection would, and feeds it straight to the engineer who has to act on it.
Which Olympic Dam assets suit drone inspection
The Olympic Dam flowsheet generates an unusually wide spread of inspection targets for one site. Because each plant fails differently — a smelter stack by refractory and shell corrosion, a tankhouse by crane-runway and structural-steel fatigue, a TSF by crest settlement and erosion — the inspection scope is shaped per asset rather than offered generically.
Key inspection targets at Olympic Dam
| Asset | Activity | What drone inspection looks for |
|---|---|---|
| Copper smelter stack and ducting | Flash furnace, converting | Shell corrosion, weld-toe cracking, coating and refractory breakdown, thermal anomalies |
| Headframes and shaft steelwork | Hoisting, ventilation | Structural-steel cracking, bolt/fastener loss, corrosion at connections (AS 4100) |
| Concentrator structures | Grinding and flotation buildings | Cladding, structural steel, walkway and platform condition |
| Tankhouse and crane runways | Electrorefining to cathode | Crane-rail and bridge steel condition, runway corrosion, roof structure (AS 2550) |
| Tanks and pressure vessels | Hydrometallurgical recovery | External corrosion, lagging and coating condition (AS 3788) |
| Tailings storage facility | Tailings deposition and lifts | Crest settlement, erosion, slope and spillway condition, embankment monitoring |
| Conveyors and transfer towers | Ore and product handling | Truss-node fatigue cracking, corrosion, gallery and structural condition |
A thermal payload adds a second layer over much of this list: blocked or wet refractory and lagging defects on the smelter, overheating bearings and motors on rotating plant, and electrical hot spots in switchgear and on the site's distribution network. On the TSF and stockpiles, the same aircraft that flies condition imagery can also fly photogrammetry, so an inspection campaign and a volumetric campaign can share a single mobilisation.
Crucially, this is the front end of a complete condition picture rather than a standalone product. When a drone inspection at Olympic Dam finds a defect that needs measuring — a stack lean, a crane-rail misalignment, a TSF lift volume — the same ISS team can bring a total station, 3D laser scanner or photogrammetric capability to the same trip without re-engaging a new contractor.
Method and equipment for a remote uranium site
A drone inspection survey is only as good as its optics, its stability in wind and the discipline of the flight plan. At Olympic Dam, method selection is dictated by three realities: the work spans surface structures and radiation-controlled plant, the heat regularly exceeds 45 degrees on the Gawler Craton, and there is no second chance to fetch gear. ISS crews mobilise self-contained, with redundant payloads, so a single fault does not end a shift.
- High-stability multirotor with mechanical-shutter RGB sensor (20-45 MP) — at a 5 m stand-off this resolves a GSD of roughly 1-1.5 mm/pixel, fine enough to identify hairline cracking, weld defects and early coating breakdown on smelter shells and headframe steel. Obstacle sensing and precise position hold allow safe close-range work near steelwork and live conductors.
- Long-range optical zoom payload — for faces where stand-off cannot be reduced, such as the hot smelter stack, energised switchyards and tight radiation-controlled exclusion zones, detail is captured from a safe distance.
- Radiometric thermal sensor (<0.05 °C NETD) — anomaly detection for refractory, lagging, bearings, motors and electrical hot spots across the smelter, concentrator and distribution network.
- Leica and Trimble GNSS and total station — to place and observe ground control where defects must be tied to the site coordinate system and compared between inspections, the same instrumentation behind our engineering and mechanical survey work.
- Photogrammetry and modelling software — orthomosaics, textured 3D models and point clouds exported to LAS, LAZ and E57 where the inspection is paired with as-built or laser-scan data.
Before demobilising, the crew reviews imagery on site for focus, exposure, coverage and overlap against the asset map — re-flying a missed face costs minutes on site and avoids a return mobilisation that, from Adelaide, would cost days. In 45-degree conditions ISS verifies payload and instrument performance on site rather than relying on temperate-climate assumptions.
| Do | Don't |
|---|---|
| Fly close and steady to capture the GSD the defect actually needs | Assume megapixels alone deliver detail — a sensor flown too far back resolves less |
| Carry redundant payloads and batteries; the nearest replacement is hours away | Plan as if a same-day swap from Adelaide is possible if a payload fails |
| Plan inspection capture around the locked-out shutdown window | Treat a continuous smelter or tankhouse as an asset you can access at will |
| Use optical zoom and thermal to inspect radiation-controlled and hot faces from a safe stand-off | Send personnel into controlled areas for imagery a UAV can capture remotely |
Standards, airspace and compliance in South Australia
A drone inspection survey at Olympic Dam sits under a heavier compliance load than most Australian inspection work, because the flying is regulated by CASA, the asset assessment is regulated by Australian Standards, and the site itself is a uranium-producing operation governed by the radiation framework.
- CASR Part 101 and the Manual of Standards: govern all UAV operations over the site. ISS flies under a current CASA Remote Operator Certificate (ReOC) with licensed RePL pilots, registered aircraft and aviation-endorsed public liability cover, and manages the controlled-airspace considerations around the Olympic Dam aerodrome on your behalf.
- AS 4100, AS 3788, AS 2550 / AS 1418: the inspection itself is conducted against the standard relevant to the asset — AS 4100 for structural steel on headframes and concentrator buildings, AS 3788 for in-service pressure equipment external condition, and AS 2550 / AS 1418 for tankhouse cranes and runways. ANCOLD dam-safety guidance frames TSF embankment inspection.
- SA Radiation Protection and Control Act 2021 and ARPANSA codes: govern work in radiation-controlled areas. ISS crews complete the site's radiation safety inductions and work to BHP's radiation management plan; flying from a stand-off is itself a control that keeps personnel out of controlled areas during capture.
- SA Work Health and Safety (Mines) Regulations and ICSM standards: frame the fall-elimination duty that drone inspection directly serves, and set the datum and accuracy framework where defects are georeferenced.
⚠️ Watch out: A drone inspection does not by itself satisfy every mandated regime. Some pressure-equipment and crane standards still require hands-on or NDT inspection at defined intervals. Used well at Olympic Dam, 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 each asset during scoping.
Indicative commercial ranges help operators budget. A single-asset inspection — a stack, a headframe, a transfer tower — typically runs AUD 2,000-6,000 per asset, with controlled-airspace or live-plant coordination adding around AUD 500-2,000, a thermal pass adding AUD 800-1,500, and georeferenced 3D deliverables adding 20-60% over raw imagery. Remote-site mobilisation, travel and accommodation to Roxby Downs are scoped separately and transparently.
Why operators choose ISS for inspection at Olympic Dam
South Australia's resources sector is smaller than Western Australia's or Queensland's but is defined by high-value, technically demanding assets, and Olympic Dam is the most demanding of them all. A generalist drone operator who can map a paddock is not equipped to inspect a flash-furnace stack inside a radiation-controlled plant, to a structural standard, during a shutdown clock.
ISS brings inspection imagery together with industrial survey experience in smelters, refineries, concentrators and underground mining. We understand the asset failure modes — refractory and shell corrosion on the smelter, fatigue at conveyor truss nodes, runway wear in the tankhouse, crest settlement on the TSF — and we record the standard applied, the inspector's competency and a measurement-confidence statement with every report. Because the same crew also runs our UAV and aerial surveys, engineering and mechanical survey, a drone inspection at Olympic Dam can flow straight into measurement, alignment or as-built scanning on the same mobilisation, and the same crew who know your control network and your plant return each cycle. We arrive self-sufficient, certified and radiation-inducted, and we deliver data in the format your engineers and asset managers already use.
For ongoing work across Olympic Dam, Carrapateena and Prominent Hill in the Gawler Craton, ISS offers service agreements with priority scheduling, so inspection baselines are maintained by the same people year on year.
Frequently asked questions
How accurate is a drone inspection survey at Olympic Dam?
For condition assessment, ISS captures imagery at 1-3 mm/pixel GSD on close-range work, resolving hairline cracking, weld defects and early coating or refractory breakdown — comparable to a hands-on close visual inspection under AS 4100 and AS 3788. Where geometry is required, ground control tied to the site coordinate system lets us locate defects to within 20-50 mm on an orthomosaic or 3D model for repeat monitoring across shutdown cycles.
Can the smelter and tankhouse be inspected while running?
Usually, yes. 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. Hot smelter surfaces, energised switchyards and radiation-controlled faces are flown from a safe stand-off using an optical zoom or thermal payload, which is often the only practical way to inspect them at all.
Is ISS set up for the radiation and airspace requirements of Olympic Dam?
Yes. Our crews complete the site's general, mine and radiation safety inductions and work to BHP's radiation management plan, consistent with ARPANSA codes and the SA Radiation Protection and Control Act 2021. All flying is conducted under a CASA Remote Operator Certificate with licensed RePL pilots, and ISS manages the CASR Part 101 airspace compliance, including the controlled-airspace considerations around the Olympic Dam aerodrome.
Does a drone inspection replace mandatory hands-on inspections?
It satisfies many condition-monitoring and visual-inspection needs, but some pressure-equipment, crane and dam-safety 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 genuinely needed. ISS confirms the regime that applies to each Olympic Dam asset during scoping.
Request a quote
If access, height, heat or radiation-controlled areas are making your structural and asset inspections at Olympic Dam slow, expensive or hazardous, a drone inspection survey is very likely the safer and cheaper path — and the payback usually lands on the first campaign.
- Call 0407 057 015 — Discuss your scope with a surveyor who knows Olympic Dam, the integrated copper-uranium flowsheet and remote South Australian work.
- Receive a detailed proposal — Asset list, payload recommendation, standards applied, safety and radiation plan, and a fixed-price quotation tailored to your shutdown or project.
- Mobilise to site — We coordinate access, inductions, travel and accommodation to Roxby Downs to fit your timeline.
For ongoing inspection across Olympic Dam, Carrapateena and Prominent Hill, ask about an annual service agreement with priority scheduling and dedicated crews. See our Olympic Dam surveying hub and the drone visual inspection service for related capability, or contact ISS to get started.
Industrial Spatial Solutions — integrated-site capable, CASA-certified, remote-site disciplined.
Related reading: Surveyors Olympic Dam, Visual inspection, UAV and aerial surveys