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Automated Robotic Arm UT Scanning

Programmed, full-coverage ultrasonic scanning on complex geometry components — pressure vessel heads, nozzle welds, pipe elbows, turbine casings, and compound-curvature structural elements — with consistent probe contact, defined scan pitch, and automated coverage verification that manual scanning cannot deliver on curved and compound surfaces.

What Is Automated Robotic Arm UT Scanning?


Automated robotic arm UT scanning uses a multi-axis robotic manipulator to carry an ultrasonic probe — phased array, TOFD, TFM/FMC, or conventional — across the surface of a component following a pre-programmed path. The robot maintains controlled probe orientation (normal incidence on curved surfaces), consistent contact pressure, and defined scan pitch throughout — eliminating the probe angle variation, contact inconsistency, and index pitch error that make manual scanning of curved surfaces unreliable for critical flaw detection.


The scanning programme is defined before inspection begins — scan path, index pitch, scan speed, and data acquisition parameters are all specified and executed exactly. Coverage is verified from actual encoder position data, not assumed from operator movement. Every scan line is at the specified spacing. Every nominated inspection zone is covered at the specified sensitivity.


Automated scanning produces a documented, reproducible scan programme — enabling direct comparison of scan datasets between successive inspection intervals, reliable change detection, and credible trending of indication growth or new indication appearance over time.

Where We Apply Automated Robotic Arm Scanning


        Pressure vessel nozzle and shell weld full-coverage scanning

        Reactor and pressure vessel head inspection — complete coverage without manual scan gaps

        Pipe elbow and fitting weld scanning — compound curvature requiring programmed path control

        Turbine and compressor casing inspection

        Aerospace structural component automated UT — airframe and engine component acceptance

        Rail and transportation component acceptance scanning

        Nuclear component inspection — qualified procedures with full coverage documentation

Applicable Codes and Standards


        ASME Section V — Articles 4 and 5 — UT examination requirements applicable to automated scanning

        ASME Section VIII Division 1 and 2 — Pressure vessel inspection — full-coverage UT for nozzle welds and heads

        ASME Section XI — Nuclear component in-service inspection — automated scanning qualification

        EN ISO 11666 — Non-destructive testing of welds — Ultrasonic testing — Acceptance levels

        EN ISO 17640 — Non-destructive testing of welds — Ultrasonic testing — Techniques, testing levels, and assessment

        AWS D1.1 — Structural Welding Code — UT examination requirements

        Client and operator-specific automated scanning qualification requirements