Last modified
Saturday, August 29, 2020 - 20:55

RoNik UT Drone - Wall Thickness Measurements

No more people in confined spaces

RoNik Inspectioneering executes ultrasonic thickness (UT) measurements using drones. With the RoNik UT drone it is possible to execute steel thickness measurements at hard to reach places at height, such as storage tank walls, roofs and I beams.

The UT drone is RoNik's proprietary development and is based on patented technology that enables the drone to firmly and precisely press the UT probe against a surface. The drone has been specially developed for indoor use in industrial confined spaces and can be controlled in the presence of steel and concrete.



Reduced HSE risk by mitigating work at height and confined space entry
Reduced (scaffolding) costs
Easy deployment, faster data gathering
Reduced downtime of assets
No weather dependency
Detailed monitoring of measurements live on screen
No permits from aviation authority needed for indoor flying
If tank is heavily corroded, UT measurements are not possible


Accuracy Visual inspection: details until 0,1mm are distinguishable. UT measurements: 0,1 mm accuracy.
Areas of Application Storage tanks (carbon steel, stainless steel, aluminium). All other steel equipment that need thickness measurements.
ATEX certified No
Capabilities Integrated couplant (gel) dispenser for optimal contact between UT probe and surface. Integrated surface cleaning brush. Calibrated UT measurement device with certified calibration report.
Certifications / licences VCA*, EEMUA159, API653, Flyability certification, RoNik operator qualification guidelines, Level II NDT engineers. Calibration report of UT sensor available.
Compliance Inspection and reporting in oil and gas industry compliant with EEMUA159, API653, API510 codes or equivalent.
In-service inspection possible Differs per tank type.
Output UT data is delivered in requested format of the client, in addition in 3D model for positioning.
Redundancy Redundant ground station, flight controller and battery.
Speed Max. 300 UT measurements per day.

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Technology Readiness Level
Development Technology demonstration Mature / Proven

About RoNik Inspectioneering B.V.

RoNik Inspectioneering performs industrial confined space inspections using drones and robots. Our specialty is the non-entry inspection of industrial, hazardous and enclosed spaces, such as storage tanks, chimneys, boilers, furnaces, pipelines, etc. Our focus is on ultrasonic thickness measurements, visual inspections and thermal inspections. We deliver full certified EEMUA159/API653 reports.