The Validation Centre (TVC) Ltd

The Validation Centre (TVC) Ltd

Bespoke Laser, Video & ECT Inspection Systems

May 18, 2017

Bespoke Inspection Systems

Since 2009, TVC has been developing and manufacturing bespoke Laser, Video and ECT inspection Systems to client requirements. So far, equipment has been tailored to provide inspection in key areas in pipe welding for the Pipe Manufacturing and Pipeline Welding industries.

The systems can be comprised of Video, Eddy Current and Laser components to inspect pipe internals.

Video Systems

  • Remote visual inspection using full HD cameras
  • Wide angle lenses available
  • 10 x Optical Zoom as standard
  • HD Video capture with text overlay
  • Remote pan and tilt
  • Can be combined with Laser and ECT equipment
  • Deployment vehicles for both straight pipe and bends
  • Full HD wireless video with ranges up to 1km

Wireless HD Scanning Camera System for the Internal Inspection of Clad Pipe Bends

Camera Buggy

The camera buggy is a self-contained, battery powered unit controlled by computer via Wi-Fi. The camera buggy moves along the inside of a pipe by contracting and extruding its main body. “Feet” (mobility actuators) retract and extrude to grip the pipe wall. The buggy camera has full motion range. The operator can pan and tilt the camera to better inspect the pipe.

The camera has two modes of operation:

Manual: Operator control for all movement of the buggy and camera.
Automatic: Buggy moves automatically down the pipe. During each forward movement, the camera head rotates 360° allowing a full interior inspection of the pipe

ECT Inspection of Weld Clad Overlay

  • Accurate ECT Measurement of austenitic nickel-chromium-based superalloy cladding on ferrous material to 0.1mm
  • Fast scanning of large areas and/or lengths
  • Can be used with Video and Laser equipment

DinsearchTM Pipe Measuring Equipment

The DinsearchTM is a semi-automatic measuring system. The eddy current probe, located in a holster, is driven out and down the length of pipe being inspected.

Data processing, recording and display take place in the computer system to produce a screen trace:
Bespoke Laser, Video and ECT Inspection Systems

Equipment to Detect Surface Irregularities
A small-scale eddy current probe is mounted a short distance from a wheel which runs on the surface of the cladding. The probe is designed and runs, so it detects only the surface of the cladding. Its output indicates the gap between the tip of the probe and the surface, or ‘lift-off’.

Missed Run Lift-Off

The lift-off at the missed run is greater and the lift-off signal less.

Extra Weld Run Lift-Off

The lift-off is less and the signal is greater.

ECT Inspection of Weld Clad Overlay
A real trace looks like:

The large signals on the left-hand side of the traces are from the edges of the reference block and the start of the pipe.
The signals are an indication of the presence of surface irregularities, generally, it is not possible to calibrate to read the size of the irregularity.

Multiple Heads and Traces

The carriage that goes down the pipe can carry several eddy current heads, typically four for cladding thickness and two for surface irregularities.

The result is a set of traces:

Inspection Systems for Pipe Internal Laser

Inspection of Root Weld

  • Remote wireless system
  • Automated laser control for 360° inspections of root
  • Automatic defect recognition
  • Manual analysis
  • Profile display

Pipe End Area Inspection

  • Laser system to measure bevel profile
  • Laser system to measure ovality
  • Analysis software

A line laser for bevel profile measurement is combined with multiple single point lasers to measure internal and external ovality. The laser inspection software then analyses pipe end area bevel profile and pipe ovality.

Laser Scanning of External Girth Welds

  • Laser measurement of external girth welds
  • Laser measurement of cap profile
  • Laser measurement of high/low
  • Laser measurement of fit up

To request a quotation, visit our product page or email Sales.