From: jishnu@nospam.verizon.net   
      
   On 5/20/2014 7:35 PM, Stephen Sprunk wrote:   
   > On 20-May-14 14:50, conklin wrote:   
   >> "Stephen Sprunk"  wrote in message   
   >> news:lle7rn$10q$1@dont-email.me...   
   >>> On 19-May-14 19:11, conklin wrote:   
   >>>> If the lack in a freight train is so severe that it would harm a   
   >>>> human in the last car, then think of the shock done to the oil.   
   >>>> No wonder they derail.   
   >>>   
   >>> And that oil is in sealed containers full of liquid; oh no, the   
   >>> oil might suffocate and/or drown!   
   >>>   
   >>> "Safe for oil" and "safe for humans" are very different things.   
   >>   
   >> Until the shock causes them  to derail.   
   >   
   > Shock from slack action is purely longitudinal; it could damage humans   
   > or other unsecured cargo aboard the train, but the train itself will   
   > remain on the rails.   
   >   
   > Aside from the obvious case of collisions, derailments nearly always   
   > boil down to a train going faster than it should have--either due to   
   > crew error or due to the speed limits not being set properly for the   
   > actual condition of the track.   
      
   Or in case of incompetent outfits like NJ Transit, if they forget to   
   maintain earth return straps in EMUs causing return current to flow   
   through the wheel bearings causing them to fail leading to a wheel and   
   axle falling off. In a manner of speaking I suppose that falls in the   
   category of going too fast since the train should be moving at all with   
   that kind of poor maintenance and safety monitoring.   
      
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