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Maintenance Schedules

Tunnel Ventilation Fans Activation Schedules

Tunnel Ventilation Fans (TVFs) are installed near certain MRT stations along the North-South and East-West to provide air movement in MRT tunnels. 

TVFs are used primarily for:
  1. Maintenance works in the tunnels during non-revenue hours. These include works such as tunnel washing, rail welding and rail grinding.
  2. Emergency situations when commuters are evacuated from the tunnel to the nearest station platform.
The powered ventilation is necessary for the health, safety and comfort of our workers in the tunnel as the TVFs remove elements such as smoke, heat and dust generated during the maintenance works. 
We have made every effort to minimise noise and any inconvenience caused to neighbouring residential and commercial areas.

Please watch this space for the latest schedule.

From 22 - 28 April 2024

Item No

Affected Stations




Novena - Bishan

23 April 2024

0100 – 0430 hrs


Kallang - Lavendar

23 April 2024

0100 – 0430 hrs


Dhoby Ghaut - Somerset

27 April 2024

0100 – 0430 hrs


Braddell - Toa Payoh

28 April 2024

0100 – 0430 hrs


Somerset - Dhoby Ghaut

28 April 2024

0100 – 0430 hrs









NOTE: The maintenance schedule is accurate at the time of publication but is subject to change due to unforeseen circumstances such as weather condition, urgent track work for safety reasons, etc.