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I happened to see an Article in Friday's NY times about the MTA pumping out the east river tunnel with special pump trains. My silly question is how does the pump train get power when the system is shut off of power? Does the MTA use big "Jumper Cables" to where there is power? I can't see diesels running in those confined tunnels!

 

 

 

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Originally Posted by Arthur P. Bloom:

You mean in addition to the link I provided?

 

http://www.thebergennetwork.co.../mta/subway/work.php

 

Arthur, you mentioned diesels for work train service. I looked all through your link and I did not find a mention of battery-power or genset/hybrid locos for MOW work in tunnels, nor did it show the newer Wabtec locos. Did I miss something? I spent about 20 minutes trying to research this before I moved on.

Last edited by Ace

Believe it or not, diesels can run in confined areas with special air and exhaust filters. A TV series [Modern Marvels(?)] examined a diesel locomotive used in mines. It was flattened, like a battery-powered or a catenary-powered electric locomotive, and it was certified for use in mines.

 

Electricity and water do not mix, so a pump train would have to be powered by a motor like that one.

Originally Posted by Arthur P. Bloom:

... the link I provided lists what they *DO* use, I think the link explains it best.

Arthur, your link is to a page not updated since 2008, which does not show the newer Wabtec MP 8AC-3 diesel-electric MOW locomotives. ReadingFan is right, they must be relying on low-emissions technolgy for operation in tunnels. I am surprised that the MTA would not have genset or battery locos for MOW use in tunnels, like the London Underground. Thanks to prrhorseshoecurve for including those awesome tunnel  photos!  

R156_locomotive_delivered_to_MTA

http://en.wikipedia.org/wiki/MP_8AC-3

The MP 8AC-3 is a light-weight Diesel locomotive built by the Motive Power division of Wabtec. It was designed from scratch as a work train engine for the New York City Subway system, where it is designated the R156. The MTA ordered 28 units in 2006. After some difficulty with the initial prototype, the first unit, numbered OL912, was delivered on May 1, 2012.[1] Deliveries will continue through mid-2013

 

I wonder if they designed the AC traction motors for extra clearance in flooded tunnels?

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