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Why trains derail

MUCH has been learned since the three derailments on the Sub-Surface lines three to six months ago.

So far, all the points have been inspected and any immediate problems dealt with. There has been a review of maintenance and inspection regimes with a proposal put forward for quantitative inspections at maintenance levels. These would take into consideration wear and tear, and make a comparison between the state of the track and the standard.

Traditionally, pointwork has been maintained by both track and signal personnel and better coordination of the two would be an advantage.

Martin Innes, Engineering Operations Manager, SSL, says: “We are also looking at Track and Signals. We're trying to co-ordinate the two so that when one is doing work, the other can get work done at the same time. In addition, there has been the recognition of the need for another track manager."

SSL and the Chief Engineer's Group are working together to review the standards and put new processes in place to ensure appropriate actions are taken. There is now written, instead of verbal confirmation from both parties when assets are commissioned or decommissioned.

Richard Consterdine, Track & Civils Asset Manager, SSL, says: “We are also looking at and understanding the reasons why trains derail. With enhanced training in all areas, we can avoid these incidents in the future."

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