Loosened Bolt Caused Train Platform Door to Become Dislodged

The faulty platform screen door on the Downtown Line (DTL) that caused a train delay earlier this month was a result of a bolt that had come loose, causing the door to fall out of place and into contact with the side of an approaching train.

The LTA and SBST said a bolt on the fastener that secures the affected platform screen door to the guide rail had “loosened over time”, causing the door to be misaligned and coming into contact with the side of an approaching train. “No commuters were hurt in this incident,” they added. A self-locking nut and a retaining pin will be added as an additional measure to better secure the fastener to the guiding rail.

“The enhancement works to the doors are expected to be completed in the next two weeks. All platform screen doors for the upcoming DTL3 will also use this enhanced fastener design,” they said.