Aerial NDT · Province-wide
Pulsed Eddy Current (CUI) by drone.
Corrosion-under-insulation screening through cladding — pulsed eddy current by drone reads wall thickness through up to 100 mm of insulation and weather jacket. No stripping.
Free phone consult · No pressure · Mon–Sat 8am–6pm PT
Why clients choose it
- Finds CUI without removing cladding
- Reads through weather jackets and insulation
- Cuts insulation removal/reinstatement budgets dramatically
- Screens kilometres of insulated line fast
Typical assets
How it works
- 1
CUI risk mapping
Operating temperature bands and insulation condition identify the highest-probability CUI zones — screening starts where the odds are worst.
- 2
Through-cladding scan
The PEC sensor reads relative wall thickness through insulation and jacket — up to 100 mm of lift-off — while the asset stays fully dressed.
- 3
Anomaly grading
Wall-loss indications are graded and ranked; clean areas are cleared without a single jacket screw turned.
- 4
Targeted verification
Only graded anomalies get insulation windows opened for direct UT verification — removal budgets shrink to the spots that matter.
Frequently asked
What is corrosion under insulation and why is it such a problem?
CUI is external corrosion on insulated piping and vessels, fed by moisture trapped against the steel — invisible until the jacket comes off or the wall fails. It is among the most expensive integrity threats in process industries precisely because finding it traditionally meant stripping and reinstating insulation on spec.
How does PEC see through insulation?
Pulsed eddy current induces a decaying electromagnetic field in the steel through the non-conductive insulation and thin jacket; the decay rate corresponds to remaining average wall thickness. It reads through up to 100 mm of lift-off on 3–18 mm carbon steel walls — screening data with zero removal.
Is PEC a replacement for UT?
No — it is the screening layer. PEC grades relative wall loss through cladding fast; direct UT then quantifies the graded spots through small inspection windows. The pairing typically cuts insulation removal budgets by an order of magnitude versus strip-and-inspect.
What jacket materials can you scan through?
Aluminum and stainless weather jackets over standard insulations are the designed use case. Thick galvanized jackets reduce sensitivity and get flagged at scoping. The aerial platform adds the part rope teams hate: elevated insulated lines and vessel tops without scaffolding.
Related aerial services
Aerial EMAT Inspection
Electromagnetic acoustic transducer thickness testing by drone — no couplant, up to 4 mm lift-off, made for corroded, dirty, or coated steel where conventional UT struggles.
View serviceAerial High-Temperature UT
Wall-thickness measurement on hot, in-service assets — 0 to 260 °C (32–500 °F) — without shutdown, by drone. Echo-to-echo and pulsed-echo modes with live A-scan.
View serviceAerial Ultrasonic Testing (UT)
Contact UT wall-thickness measurement delivered by drone — corrosion mapping on tanks, stacks, and structures at height without scaffolding, rope access, or shutdown.
View serviceAerial Industrial Thermal Survey
Heat-loss mapping on tanks and pipelines, refractory damage, stack hot spots, and district-energy networks — plant-scale radiometric surveys from the air.
View service← All aerial inspection services·Drone specialist hub
Aerial Pulsed Eddy Current (CUI) across BC
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Scope your NDT campaign in one call
Free phone consult — asset, access, airspace, and a firm quote, usually in five minutes.