GROUNDING AND BONDING OF RAIL ROAD TRACKS

[EEENGRX]

What are the relevant standards for grounding and bonding of Rail Road tracks ?I know Article 250 per NFPA talks about grounding and bonding but i am looking for very specific information on the applicable standards in this case?

 

[3DDave]

Railcar detection systems depend on a voltage difference between the rails. Grounding and bonding as a general practice would prevent systems from detecting rolling stock and locomotives, preventing railroad crossing warning signals from operating properly.

What is different about the use you are expecting?

 

[EEENGRX]

This is within a plant environment for Tank Car loading rack grounding. Ie the Portion normally occupied by cars to be insulated from main tracks. And all rails in the insulated section to be bonded together. This is per bonded to loading arms and loading rack structure and grounded or connected to ground loop grid within specified intervals.

 

[3DDave]

This seems pertinent: https://www.teraelektronik.com.tr/storage/app/media/Railcar Grounding.pdf

Note the discussion that the rolling stock bearings may not be conductive and therefore grounding via the rails isn't to be depended on.

I take from that that the rails can be ignored for grounding and bonding and that provisions for a separate connection to the rail car must be in place.