On Thursday, the authorities said that engineers had found “extensive damage” to the track and trackside equipment, caused by a faulty train as it was returning to Ulu Pandan depot.
A defective component known as an axle box had dropped onto the train tracks, causing one bogie – or an undercarriage with wheels – to come off the running rail between the Dover and Clementi stations.
This fault – the first of its kind that has happened on an SMRT train – led to further damage.
The engineers found 34 rail breaks across 1.6km of tracks between the stations at Dover and Clementi, as well as damage to three machines that are used to divert the trains to different tracks.
The third rail that supplies power, as well as power cables and rail clips, were also damaged, said the authorities.
This caused the power trip that occurred at about 9.25am on Wednesday, which led to another train near Clementi station to stall.
The faulty train, made by Kawasaki Heavy Industries, has been in service for 35 years. The authorities said that all the Kawasaki Heavy Industries trains running on Thursday have passed the axle box functionality checks.
