09.07.12
Ultrasonic rail testing to detect track flaws
Network Rail has launched a fourth ultrasonic rail testing train into service to detect minute flaws in the track.
The UTU1 train has more accurate positioning systems and an improved ability to test the track and can be used at a higher speed of 45mph. The £700,000 systems detect irregularities in ballast and formation up to 2 metres deep and can provide early warning of any problems that could occur.
Ground penetrating radar, ultrasonics and a rail profile scanner test the track, with laser technology comparing the state of the railhead with a pre-programmed template to judge if the track is becoming worn out of shape and in need of grinding.
The fourth train will allow one to be taken out of use for servicing, improving the reliability of the service. The testing will focus traditional track walks, carried out by permanent way staff, to areas needing inspection.
Network Rail’s director of engineering Steve Yianni said: “Network Rail’s number one priority is safety and the addition of this unit to our fleet means we can measure the safety and quality of our railway to much higher standards.
“It also means we can keep our test trains running more reliably and at more times across the country. With this we can improve the quality of the ride for all our passengers, and make sure they reach their destination in complete safety.”
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