Chennai (Metro Rail News): Tata Projects Ltd. recommissioned TBM S98 for the third time at Purasaiwakkam metro station towards Kelly station of 45.8 km Line-3 ( Madhavaram- Siruseri) of Chennai Metro Phase 2.
Chennai Metro’s TBM S98
TBM S98, nicknamed Anaimalai, is a Terratec Earth Pressure Balance (EPB) machine with a 06.61 diameter.
Timeline of commissioning TBM S98 on corridor 3:
| Assignment | Year | Location | Distance |
| First assignment | February – June (2023) | Madhavaran Station (line 3) -Venugopal Station (line 5) | 4.5 km |
| Second assignment | October (2023) – June (2024) | Ayanavaram Station – Otteri Station | 925 m |
| Third / Current assignment | August 2024 | Purasaiwakkam Station to Kelly Station | 280 m |
In May 2021, Chennai Metro Rail Ltd.(CMRL) awarded Tata Project Ltd. with Package TU-01 with a total cost of Rs.1999 crore.
Package TU-01 is a 9 km long section on Line 3 of Chennai metro phase 2. The deadline for the project is 42 months.
Work Description
The work under Package TU-01 includes the construction of a 9 km twin tunnel (totalling 18 km) from the TBM retrieval shaft near Venugopal (line 5) to Kelly station (Line 3) and the construction of diaphragm walls and entry and exit structures of Madhavaram Milk Colony Station, Murari Hospital Station, Ayanavaram Station and Purasaiwakkam High Road Station.
Additionally, Tata Project Ltd. has deployed five tunnels on Package- TU-01.
| TBM | STATION | DISTANCE |
| TBM S98 (Anaimalai) | Venugopal Nagar | 415 m |
| TBM S96 (Nilgiri) | Madhavan High Road | 1.4 km |
| TBM S99 (Servarayan) | Venugopal Nagar | 415 m |
| TBM S97 (Podhigai ) | Madhavaran High speed | 1.4 km |
| TBM S98 (Anaimalai) | Otteri Station | 925 m |
