Experts In Confined Space Drone Survey
Ultrasonic surveying uses sound waves to measure material thickness and detect defects within structures. Ideal for industrial applications, this non-destructive testing method identifies corrosion, wall thinning, and cracks in assets such as pipelines, tanks, and pressure vessels.
Benefits of Confined Space Ultrasonic Survey
Accurate Thickness Measurement and Corrosion Detection
Ultrasonic surveys provide precise measurements of material thickness, allowing for early detection of corrosion, wall thinning, and other structural issues. This data helps companies plan maintenance proactively and avoid costly repairs or unexpected breakdowns.
Enhanced Safety
Our ultrasonic drone surveys eliminate the need for personnel to enter confined and hazardous spaces, such as tanks and pipelines, reducing the risk of accidents or exposure to toxic substances. This non-intrusive approach complies with confined space regulations, protecting both personnel and assets.
Reduced Downtime
Confined space ultrasonic surveys are faster and more efficient than traditional methods, minimising the need for extended operational downtime. By allowing assets to remain operational during inspection, companies can maintain productivity while assessing asset health.
Non-Intrusive Access to Hard-to-Reach Areas
Drones equipped with ultrasonic sensors can access narrow, elevated, or difficult-to-reach confined spaces, capturing data from areas that may be challenging or unsafe for manual inspection. This ensures comprehensive coverage of critical assets.
Reliable Data for Maintenance and Compliance
Ultrasonic drone surveys or UT provide highly accurate thickness and integrity data, allowing companies to make informed decisions about repairs, maintenance schedules, and compliance with regulatory standards.

Ultrasonic Survey Statistics
99%
Precision in defect detection for thickness and corrosion mapping.
+250
High-frequency ultrasonic scans deliverable per project.
+250
m² of potential surface area assessable using ultrasonic technology.
UT Survey
Storage Tanks
Measure wall thickness to detect corrosion and material degradation.
Pipelines
Identify weak points, leaks, or wall thinning.
Pressure Vessels
Ensure compliance with safety standards by assessing structural integrity.
Industrial Equipment
Monitor wear and tear in machinery components.
Boiler tubes
Exposed boiler tubes are susceptible to erosion, making insights into material loss crucial




























Helpful Information
Frequently Asked Questions
A confined space ultrasonic drone survey uses drones equipped with ultrasonic sensors to measure material thickness and detect structural integrity issues, such as corrosion or wall thinning, within confined spaces. This inspection method provides precise data without requiring personnel to enter hazardous areas.
Ultrasonic surveys reduce the need for personnel to enter confined spaces, where risks such as toxic exposure, limited airflow, and physical hazards may exist. By using drones, companies can conduct inspections from a safe distance, improving safety and compliance with confined space regulations.
Drones can perform ultrasonic inspections on a variety of confined assets, including storage tanks, pipelines, pressure vessels, silos, and boilers. Ultrasonic surveys are particularly valuable for assessing the structural integrity of assets that are difficult or unsafe to inspect manually.
Ultrasonic surveys provide precise thickness measurements and are highly effective for detecting corrosion and material loss. The accuracy of ultrasonic data enables early issue detection and supports proactive maintenance planning, reducing the risk of costly repairs.
Yes, ultrasonic surveys are typically non-intrusive and can often be conducted without halting operations. This minimises downtime and allows facilities to continue running while critical assets are assessed for integrity.
Drones reduce costs associated with scaffolding, rope access, or manual entry into confined spaces. By providing quick and accurate data, drones also support proactive maintenance, preventing more expensive repairs and extending asset lifespan.
The frequency of ultrasonic inspections depends on the asset’s age, condition, and operational environment. Regular inspections are recommended to ensure compliance with safety standards and maintain asset integrity. DJM Aerial Solutions can help develop an inspection schedule tailored to your asset needs.
As confined space ultrasonic surveys are typically conducted indoors, they are not affected by outdoor weather conditions, ensuring reliable data capture in a controlled environment.
To schedule a confined space ultrasonic drone survey, contact DJM Aerial Solutions with information about your asset and inspection requirements. Our team will provide a customised quote and arrange an inspection at a time that suits your operational needs.
Following the survey, we provide a detailed report with ultrasonic thickness measurements and any identified issues. This report supports maintenance planning and helps clients address structural concerns early, ensuring regulatory compliance and asset longevity.
Contact us today to discuss your project requirements
News & Updates
Recent Articles
Why Drone Inspection is Replacing Scaffold Access for Industrial Spring Hangers (Real EfW Case Study)
Spring hangers are critical. But inspecting them safely has always meant expensive scaffold. Until now. See how drone inspection cuts costs by 70% and eliminates working-at-height risk.
Read article
Petroleum Storage Tank Drone Inspection in Dublin, Ireland
DJM Aerial Solutions recently completed a petroleum storage tank inspection in Dublin using the Elios 3 confined space drone. The inspection focused on a complex lattice roof structure, delivering detailed visual data whilst eliminating the need for manned confined space entry.
Read article
Wastewater Tank Drone Inspection and LiDAR Survey Using Elios 3
DJM Aerial Solutions recently completed a wastewater tank drone inspection and LiDAR survey of a 13m x 30m reinforced concrete clean water tank. Using the Flyability Elios 3, we delivered a detailed condition assessment and OSGB rectified point cloud model without requiring confined space entry, scaffolding, or manned access.
Read article
ACC Duct Inspection at Energy from Waste Facility Milton Keynes Using Elios 3
DJM Aerial Solutions recently completed an internal ACC duct inspection at an Energy from Waste facility in Milton Keynes using the Flyability Elios 3 confined space drone. The inspection provided high resolution visual assessment of critical duct infrastructure without confined space entry, scaffolding, or prolonged operational disruption during the planned outage period.
Read article
Live Flare Stack Drone Inspection at a Gas Processing Facility in Humberside
DJM Aerial Solutions completed a live flare stack drone inspection at a gas processing facility in Humberside, assessing flare tip components, guide wires, turnbuckles, structural steelwork, access systems, and fastening assemblies while the asset remained fully operational.
Read article
Internal Drone Inspection of ACC Ducting in a Biomass Power Plant
DJM Aerial Solutions recently completed a confined space drone inspection of ACC air supply ducting at the world’s largest pellet fed biomass facility in Middlesbrough, North East England. Using the Elios 3 platform, five inaccessible 40 metre vertical duct systems were inspected without confined space entry, scaffolding, or working at height exposure, delivering high resolution visual data to support asset integrity and maintenance planning.
Read article