TL;DR: Karratha is the service capital of the Pilbara coast, ringed by the tallest, hottest, most access-hostile assets in the country — Woodside's Karratha Gas Plant flare stacks, Pluto LNG, Rio Tinto's Dampier and Cape Lambert shiploaders, and kilometres of live conveyor. A drone inspection survey in Karratha puts a high-resolution camera on those surfaces in minutes instead of building scaffold or rigging rope access over a 45-degree harbour. Industrial Spatial Solutions delivers CASA-certified UAV visual inspection on a FIFO basis to Pilbara coast operators, linked to our Karratha mining survey hub and our drone visual inspection service.
Key takeaways
- A drone inspection survey in Karratha reaches flare stacks, calciner ducting, shiploader booms, transfer towers and conveyor gantries without scaffold, EWP or rope access — typically cutting the inspection window by 60–80% and removing the working-at-height hazard under the WHS (Mines) Regulations 2022 (WA).
- ISS captures imagery at a ground sampling distance of 1–3 mm/pixel on close-range work, resolving hairline cracks, weld-toe defects, coating breakdown and salt-driven corrosion to the level expected of a hands-on visual inspection under AS 4100 and AS 3788.
- The Pilbara coast's salt-laden marine air accelerates external corrosion on every steel structure at Dampier, Cape Lambert and the Burrup, so condition imagery here matters more — and dates faster — than at any inland mine.
- The work is regulated by CASA under CASR Part 101; ISS flies under a Remote Operator Certificate with licensed RePL pilots, registered aircraft and aviation-endorsed cover, and manages all controlled-airspace coordination near Karratha Airport and the gas-plant exclusion zones.
- Typical Karratha drone inspection engagements run from roughly AUD $2,000 for a single asset to $6,000-plus for complex multi-structure scopes, with thermal payloads adding $800–$1,500 where electrical or refractory anomalies are in scope.
Drone inspection survey in Karratha and the West Pilbara
Karratha is not a generic mining town. It is a purpose-built city of around 16,000 people that exists to service the densest concentration of heavy industry on the Australian coast. Within a 40-kilometre radius sit two world-scale LNG operations, multiple iron ore export terminals, a major solar salt operation, ammonia and fertiliser plants, and the workshops, tank farms and bulk-handling infrastructure that keep them running. Almost every one of those assets is tall, live, and brutal to access — which is precisely the problem a drone inspection survey solves.
The defining feature of inspection work on the Burrup Peninsula and the wider West Pilbara is not the height; it is the corrosion. Karratha records some of the harshest atmospheric corrosivity in Australia — a C5 marine-industrial classification under AS 4312 across much of the coastal industrial zone — where salt spray, 45-degree summer heat and process emissions strip protective coatings far faster than inland conditions. A coating-breakdown defect that might develop over five years at Newman can develop over eighteen months at Cape Lambert. That makes a repeatable, time-stamped photographic record of external steel condition more valuable here than almost anywhere else in the country.
A drone inspection survey is the practical answer to both the access and the corrosion problem. The aircraft carries a high-resolution RGB sensor, often a long-range optical zoom or a radiometric thermal payload, and flies a controlled stand-off path so every square metre of a flare stack, shiploader boom or conveyor truss is captured at a known resolution. The output is not a measurement of geometry — that is what photogrammetry and laser scanning in Karratha are for — it is detail: cracks, corrosion, coating failure, missing fasteners, blocked drainage and deformation. The engineering judgement stays with a competent inspector; the drone just brings them a sharper, safer view than any cherry picker can.
Key point: On the Pilbara coast the question is rarely whether an asset has corrosion — it is where, how fast, and whether it has crossed a threshold since the last look. A drone inspection survey turns that from guesswork into a measured, image-backed baseline you can re-fly on a tight cycle.
Local assets and operators a Karratha drone inspection covers
The West Pilbara's industrial estate reads like a checklist of assets that are expensive, dangerous, or simply impossible to inspect by conventional access. ISS uses drone visual inspection across all of them.
| Asset / operator | Location | Inspection challenge | Drone inspection role |
|---|---|---|---|
| Karratha Gas Plant flare stacks | Woodside, Burrup Peninsula | 100 m-plus hot stacks, continuous operation | Close-range RGB + thermal of stack shell, ladders, refractory hot spots |
| Pluto LNG process structures | Woodside, Burrup | Congested live LNG plant, restricted access | Pipe-rack, structural steel and coating condition without permits to height |
| Cape Lambert / Dampier shiploaders | Rio Tinto | Marine corrosion, berths must keep working | Boom, gantry and conveyor superstructure imaging berth-side |
| Stockyard stacker-reclaimers | Rio Tinto, Dampier Salt | Long-reach booms, slewing machines | Boom truss, luffing gear and counterweight condition |
| Yara Pilbara ammonia / TAN plant | Burrup | Process stacks, ducting, vessels | External vessel and stack condition under AS 3788 |
| Conveyor and transfer towers | Multiple Pilbara coast | Kilometres of elevated gantry, dust and heat | Truss-node fatigue, walkway and chute-frame defects |
These are the structures where a two-person rope-access crew might cover one stack in a shift. A single drone sortie can image that stack, the adjacent transfer tower and the conveyor run back to the next drive in the same window — and produce a complete, geotagged record that becomes the baseline for the next inspection. Across the Pilbara, Bowen Basin and Goldfields, ISS uses the same workflow, but the Karratha coast is where the corrosion clock runs fastest and the repeat-inspection value is highest.
Method and equipment for Karratha conditions
A drone inspection survey is only as good as its optics, its stability in wind, and the discipline of the flight plan. On the Pilbara coast it also has to contend with sea breezes, thermal turbulence off hot steel, and controlled airspace.
Inspection aircraft and RGB payload. ISS flies high-stability multirotor platforms carrying mechanical-shutter RGB sensors in the 20–45 MP class. At a 5 m 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 galvanised and painted steel. Obstacle sensing and precise position hold allow safe close-range work near shiploader structure and live conductors.
Optical zoom and thermal payloads. Where stand-off cannot be reduced — hot flare stacks, energised switchyards, restricted gas-plant exclusion zones — a long-range optical zoom payload captures detail from a safe distance. A radiometric thermal sensor (sub-0.05 °C NETD) adds anomaly detection: overheating bearings on conveyor drives, blocked or wet refractory in stacks, lagging defects, and electrical hot spots across switchgear.
Survey control. Where 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, registered to GDA2020 / MGA Zone 50, so defect positions tie to real coordinates for monitoring over time.
A typical single-asset Karratha inspection — a flare stack, a shiploader, a transfer tower — is half a day on site plus one to three days of review and reporting. The flight is planned as controlled passes at a fixed 3–10 m stand-off to hold a consistent GSD, with automated structure-following missions on complex geometry so coverage is guaranteed rather than left to the pilot's eye. Before demobilising, the crew checks imagery on site for focus, exposure and coverage against the asset map — re-flying a missed face costs minutes, not a return FIFO mobilisation.
Key point: Stand-off distance, not just sensor megapixels, sets the achievable detail. A 45 MP sensor flown at 15 m resolves less than a 24 MP sensor flown at 4 m. The skill in a Karratha inspection is flying close and steady enough, safely, in a coastal breeze and near controlled airspace, to capture the GSD the defect actually requires.
Standards and compliance
Two kinds of accuracy matter: how small a defect the imagery can resolve, and — where geometry is captured — how precisely a defect can be located. ISS captures 1–3 mm/pixel GSD on close-range work, resolving crack widths down to roughly 0.5 mm subject to lighting and surface, and locates georeferenced defects to within 20–50 mm with ground control.
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 inspection, AS 1418 and AS 2550 for cranes and runways, and AS 4312 for atmospheric corrosivity classification, which is central to coastal Pilbara assets. CASA airspace and operational compliance is governed by CASR Part 101 and the associated Manual of Standards; ISS holds a current Remote Operator Certificate and coordinates controlled-airspace approvals around Karratha Airport and the operator exclusion zones at the gas plants.
In Western Australia, work on resources assets falls under the Work Health and Safety (Mines) Regulations 2022, which place a clear duty on operators to eliminate the risk of a fall so far as is reasonably practicable before relying on harnesses or platforms. A drone inspection removes the person from the hazard entirely for the data-capture phase. ISS records the standard applied, the inspector's competency and a measurement-confidence statement with every report.
⚠️ 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, a Karratha drone inspection 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.
Why ISS for visual inspection in Karratha
ISS is an independent industrial surveying firm — not tied to any aircraft brand, coatings contractor or maintenance provider — so the inspection serves your asset, not an upstream agenda. We service Pilbara coast clients on a fly-in/fly-out basis from Perth and through direct engagement with Karratha-based contractors, with surveyors who hold current WA mine site passports and major site inductions, and who understand isolation procedures, heat-stress protocols and the specific hazards of a live gas plant or working berth.
Crucially, the same team that flies the drone also runs our engineering and mechanical surveying work. When a Karratha drone inspection survey finds a fatigue crack at a conveyor truss node or settlement on a stack foundation, we can bring a total station, laser scanner or photogrammetric capability to bear without re-engaging a new contractor — turning the inspection into the front end of a complete condition and dimensional picture. Deliverables drop straight into your workflow: a geotagged image library, a defect register with severity ratings and recommended actions, orthomosaics of each face, a textured 3D inspection model where required, and a comparison report against the previous baseline so deterioration is measured, not guessed. Reports are typically delivered within three to five business days.
Frequently asked questions
How quickly can ISS mobilise a drone inspection survey to Karratha?
We service the Pilbara coast on a FIFO basis from Perth and coordinate mobilisation around your roster cycles, shutdown windows and flight availability into Karratha. For planned inspections we scope, quote and book to suit your turnaround calendar; for urgent condition concerns on a critical asset we mobilise as travel allows. All CASR Part 101 airspace approvals near Karratha Airport and the gas-plant exclusion zones are managed by ISS before we arrive.
Can you inspect Karratha LNG and iron ore assets while they stay running?
Usually, yes. The capture is non-contact, so most live assets — shiploaders, conveyors, process structures — can be imaged without standing down production, provided an exclusion zone can be maintained around people and operating plant. Hot flare stacks and energised switchyards are flown from a safe stand-off using an optical zoom or thermal payload rather than reducing the distance.
How well does a drone inspection pick up coastal corrosion in the Pilbara?
Very well — it is one of the strongest use cases here. At 1–3 mm/pixel GSD the imagery resolves coating breakdown, blistering, edge rust and early section loss on the C5 marine-industrial steelwork typical of Dampier, Cape Lambert and the Burrup. Re-flown on a regular cycle and compared against a baseline, the survey turns corrosion progression into a measured rate rather than an annual surprise.
Is ISS certified to fly drones over Karratha industrial sites?
Yes. ISS holds a current CASA Remote Operator Certificate with licensed RePL pilots, registered aircraft and aviation-endorsed public liability insurance, and manages all CASR Part 101 compliance and controlled-airspace coordination. As the operator, we carry the approvals — you provide site access and the relevant inductions.
Request a quote
If access, height, heat or coastal corrosion is making your Karratha structural and asset inspections slow, expensive or hazardous, a drone inspection survey is very likely the safer and cheaper path — and on the Pilbara coast the payback usually lands on the first inspection. Tell us the asset, the location and the defects you care about, and ISS will scope a fixed-price drone inspection survey, recommend the right payload and deliverables, and manage every part of the CASA compliance. Call 0407 057 015 to speak with a surveyor who understands Pilbara coast operations.
Related reading: Karratha mining survey hub, drone visual inspection service, laser scanning in Karratha.