HC Deb 17 January 1968 vol 756 c572W
41. Mr. Ronald Atkins

asked the Minister of Transport if the Research Department of British Railways have now succeeded in developing ultra-sonic testers to detect rail cracks.

Mr. John Morris:

Ultra-sonic rail flaw detectors have been in use on British Railways since 1954. A new type of detector of greatly increased efficiency has been modified and tested by the Research Department of British Railways over the past year and it is now being introduced.