The North-South and East-West Lines (NSEWL) experienced intermittent traction power tripping this morning. The cause of the power trip was traced to a loosened service maintenance door next to the tracks in the tunnel near Tiong Bahru MRT station along the East-West Line (EWL).

The loosened door has already been removed. Train services between EWL’s Queenstown and Bugis stations had to be halted temporarily as traction power had to be switched off to enable engineers to access the tracks and remove the door safely. Normal train services progressively resumed following the removal of the door.

As a precautionary measure, the Land Transport Authority has asked SMRT to do a system-wide check on all the service maintenance doors. We are investigating the cause of the loosened door to prevent it from recurring.

This incident is not related to the on-going tests of the new signalling system on the North-South Line.