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380kmh's profile
Haunted Forrest 🌲
Haunted Forrest 🌲
Haunted Forrest  🌲
@380kmh

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Haunted Forrest  🌲

@380kmh

#TrainTwitter - trains & train stations - passionate opinions on public transit & civic design - transit bureacrat, but all views here are my own

Pioneer Valley
patreon.com/380kmh
Joined March 2011

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    1. Haunted Forrest  🌲‏ @380kmh May 15

      Reading about a new railroad that just began construction in Russia and it got me thinking about freight traffic in tons vs freight traffic in trains:http://www.railwaygazette.com/news/infrastructure/single-view/view/construction-of-northern-latitudinal-railway-to-start-in-2019.html …

      1 reply 2 retweets 8 likes
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    2. Haunted Forrest  🌲‏ @380kmh May 15

      The route will connect to recently-built railways in the Yamal Peninsula, home to Russia's largest natural gas reserves. Population is negligible in this part of Russia, and the new railway is intended for freight use, shipping gas and oil.pic.twitter.com/5fkWVC7U2M

      1 reply 1 retweet 6 likes
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    3. Haunted Forrest  🌲‏ @380kmh May 15

      The news story linked earlier says that traffic is estimated to be 23.9 million metric tons per year. Sounds substantial! How much is that in terms of trains per day, though? 23.9 million metric tons per year = 65,435 metric tons per day

      2 replies 1 retweet 4 likes
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    4. Haunted Forrest  🌲‏ @380kmh May 15

      Some hasty googling suggests that a fully loaded crude oil tank car in the USA weighs 286,000 pounds, or about 130 metric tons. So: 65,435 metric tons per day = 503 oil tank cars per day Bit more googling suggests that a crude oil train usually has 100 cars, so abt 5 trains/day

      2 replies 1 retweet 4 likes
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    5. Viesturs Krūmiņliepa‏ @briedisunrepshe May 15
      Replying to @380kmh

      I think something is not right... Did you take the weight of the contents or the whole car? Because a Russian tank car can hold 66t while a full train - 4158t. So you need 16 trains per day. A single track line can accommodate 22 pairs of trains.

      1 reply 0 retweets 1 like
    6. Haunted Forrest  🌲‏ @380kmh May 15
      Replying to @briedisunrepshe

      ahh, good catch--I was looking at the weight of the whole car, but the 24m tonnes/day is prob only talking about the contents

      1 reply 0 retweets 1 like
      Haunted Forrest  🌲‏ @380kmh May 15
      Replying to @380kmh @briedisunrepshe

      Single track line can accommodate far more (or far less!) than 22 pairs of trains, though, depending on a variety of circumstances

      7:50 AM - 15 May 2018
      • 1 Like
      • Viesturs Krūmiņliepa
      2 replies 0 retweets 1 like
        1. New conversation
        2. steve forrest‏ @sforrest May 15
          Replying to @380kmh @briedisunrepshe

          This is something I've always wondered about: train weight? track quality? what are the variables?

          1 reply 0 retweets 2 likes
        3. Haunted Forrest  🌲‏ @380kmh May 15
          Replying to @sforrest @briedisunrepshe

          Presence or absence of sidings, signalling system, train speeds, train lengths, track quality--those are the ones that come to mind immediately

          0 replies 1 retweet 3 likes
        4. End of conversation
        1. New conversation
        2. Viesturs Krūmiņliepa‏ @briedisunrepshe May 15
          Replying to @380kmh

          Ah, I messed up here, yes. In 2014, before we suffered a 30% decrease in freight, our bottleneck had an average of 25 freight trains per day + 19 passenger trains. That was considered at 100% capacity.

          1 reply 0 retweets 1 like
        3. Viesturs Krūmiņliepa‏ @briedisunrepshe May 15
          Replying to @briedisunrepshe @380kmh

          I see that some of our single track lines could hold 40 to 44 pairs of freight trains while others as little as 10 or 26

          1 reply 0 retweets 1 like
        4. Viesturs Krūmiņliepa‏ @briedisunrepshe May 15
          Replying to @briedisunrepshe @380kmh

          The line with a capacity of 10 pairs has such a low capacity due to ПАБ blocking that doesn't allow more than one train at a time on the single track part between stations. Instead of allowing multiple at once in the same direction.

          0 replies 0 retweets 1 like
        5. End of conversation

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