Kolkata Metro set to be part of elite club of London, Moscow, Berlin metros

35 km mainline steel third-rail to be replaced with aluminium third-rail: Can save Rs 210 crore

GN Bureau | August 30, 2023


#infrastructure   #Kolkata   #metro   #Railways  


Kolkata Metro Railway has decided to use composite aluminium third rail in all the upcoming corridors being undertaken for construction along with retro fitment in existing corridor with steel third rail. With this, Kolkata will become a member of the elite club of London, Moscow, Berlin, Munich, and Istanbul metros which have also shifted from steel third rail to aluminium third rail.

Kolkata Metro Railway, India’s first metro built by Indian Railways and launched on October 24, 1984, has been serving as a lifeline for Kolkata, the city of Joy for nearly 40 long years.

In Kolkata Metro Railway, the power to Metro Rake is supplied to rolling stock at 750V DC through steel third rail. The Third Rail Current Collector (TRCC) made of steel fitted on metro rake collects the current from Third Rail. Kolkata Metro Railway using steel Third Rail for the last 40 years.

Metro Railway Kolkata has floated a tender for replacement of existing third rail, in the first phase to cover the section between Dumdum to Shyambazar, the railway ministry said in an official release on Wednesday. In the second phase work would be taken up from Shyambazar to Central and J D Park to Tollygunge. In the third phase, the section between Mahanayak Uttam Kumar (Tollygunge) to Kavi Subhash (New Garia) shall be taken up.   So, total 35 RKm main line steel Third Rail shall be replaced in stages.

The obvious advantages of aluminium composite third rail over steel third rail are:

* Reduction in resistive current loss and improved Traction voltage level as the resistance of steel Third Rail is around six times higher than composite Aluminium Third Rail.

* On an average, for 10 km corridor with use of Aluminium composite Third Rail would require 01 no. less Traction Substation compared to steel Third Rail, i.e., a saving of nearly Rs 210 crore capital investment for a 35 km of Metro corridor.

* The reduced voltage drop shall facilitate achieving faster acceleration with the same rake available with Kolkata Metro Railway.

* Reduced maintenance and life cycle cost. The requirement of painting of Third Rail every 5 years may not be needed anymore. The frequency of measurement of Third Rail dimension may reduce significantly. There may be no possibility of damage due to rusting etc
 
* Improvement in the efficiency of train operations.

* Huge     improvement       in    Energy     Efficiency     and     reduction      in    carbon footprint.

* Estimated energy saving using composite Aluminium Third Rail may be approximately 6.7 million units per annum.

* Improved headway of the trains.
 

Comments

 

Other News

A fairly reasonable way to solve problems, personal and global

Reason to Be Happy: Why logical thinking is the key to a better life By Kaushik Basu Torva/Transworld, 224 pages

Is Nano-DAP a Catalyst for India’s Green Growth?

Nano Diammonium Phosphate, or Nano-DAP, is a revolutionary agricultural input that holds immense potential for transforming farming practices across varied agro-climatic zones in India. This innovative product is a nanoparticle-based formulation of diammonium phosphate, a widely used fertilizer in the agri

“Everyone, especially every woman, should’ve liberty of being themselves”

In February this year, yet another glass ceiling was broken, when Captain Shweta Singh became the first woman chief flight operations inspector (CFOI) at the Directorate General of Civil Aviation. Back then, in a social media post, Captain Singh had written: “The opportunity humbles me

India’s first home-grown gene therapy for cancer launched

President of India Droupadi Murmu launched India’s first home-grown gene therapy for cancer at IIT Bombay here on Thursday. Speaking on the occasion, the President said that the launch of India’s first gene therapy is a major breakthrough in our battle against cancer. As this lin

The Women of My Country: The Other Half?

1700 in 70: A Walk for a Cause By Gita Balakrishnan Rupa Publications, Rs 595, 208 pages At fifty-three, Git

Cultural Nationalism in India: Explained by Ram Madhav

The Hindutva Paradigm: Integral Humanism and the Quest for a Non-Western Worldview By Ram Madhav Rupa Publications, Rs 395, 440 pages Dr R

Visionary Talk: Amitabh Gupta, Pune Police Commissioner with Kailashnath Adhikari, MD, Governance Now


Archives

Current Issue

Opinion

Facebook Twitter Google Plus Linkedin Subscribe Newsletter

Twitter