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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 20 to 26 July 2026

 





1Newton - Novena20 July 20260100 - 0430 hrs
2Marina Bay - Raffles Place21 July 20260100 - 0430 hrs
3Outram Park - Redhill21 July 20260100 - 0430 hrs
4Newton - Orchard21 July 20260100 - 0430 hrs
5City Hall - Dhoby Ghaut21 July 20260100 - 0430 hrs
6City Hall - Bugis21 July 20260100 - 0430 hrs
7Bugis - Lavendar21 July 20260100 - 0430 hrs
8Redhill - Tiong Bahru21 July 20260100 - 0430 hrs
9Outram Park - Redhill21 July 20260100 - 0430 hrs
10Orchard - Dhoby Ghaut22 July 20260100 - 0430 hrs
11Newton - Orchard22 July 20260100 - 0430 hrs
12City Hall - Raffles Place22 July 20260100 - 0430 hrs
13Tanjong Pagar - Raffles Place22 July 20260100 - 0430 hrs
14Novena - Newton23 July 20260100 - 0430 hrs
15Toa Payoh - Braddell23 July 20260100 - 0430 hrs
16Somerset - Orchard23 July 20260100 - 0430 hrs
17Tiong Bahru - Outram Park23 July 20260100 - 0430 hrs
18Tanjong Pagar - Raffles Place23 July 20260100 - 0430 hrs
19City Hall - Bugis23 July 20260100 - 0430 hrs
20Dhoby Ghaut - Orchard24 July 20260100 - 0430 hrs
21Tanjong Pagar - Outram Park24 July 20260100 - 0430 Hrs
22City Hall - Raffles Place24 July 20260100 - 0430 hrs
23Raffles Place - City Hall24 July 20260100 - 0430 hrs
24Orchard - Somerset24 July 20260100 - 0430 hrs
25Tiong Bahru - Redhill 24 July 20260100 - 0430 hrs
26Novena - Newton25 July 20260100 - 0430 hrs
27City Hall - Raffles Place25 July 20260100 - 0430 hrs
28Raffles Place - Marina Bay25 July 20260100 - 0430 hrs
29Dhoby Ghaut - Somerset25 July 20260100 - 0430 hrs
30Tiong Bahru - Outram Park 25 July 20260100 - 0430 hrs
31Raffles Place - City Hall26 July 20260100 - 0430 hrs
32Tiong Bahru - Tanjong Pagar26 July 20260100 - 0430 hrs
33Novena - Newton26 July 20260100 - 0430 hrs
34Toa Payoh - Braddell26 July 20260100 - 0430 hrs
35Outram Park - Tiong Bahru26 July 20260100 - 0430 hrs
36Redhill - Tiong Bahru26 July 20260100 - 0430 hrs

Night Grass-Cutting Works Schedule

1

254,296D, 296E, 297C Choa Chu Kang Ave 2

813A Choa Chu Kang Ave 7

801A, 802A Keat Hong Close

25 July 2026

0130 - 0430 hrs

Late-Night SMRT Generator Testing Schedule

1Lorong Chuan Circle Line station23 July 20260100 - 0400 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.