Investigation of non-destructive tests for in-situ inspection of stock rail bolts (TM-ID-023)

Following the derailment of a passenger train at Wimbledon in April 1989, the Railway Inspectorate have suggested that stock rail bolts should be regularly inspected. There are 50,000 bolts in service on SR, and at present these have to be removed under possession for checking. The Regional Civil Engineer, Southern...