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paul7575
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« Reply #750 on: December 31, 2016, 09:02:24 » |
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"In tests the front high-speed rail carriage proved itself equal to the variable British weather."
Buzz. Exaggeration...
Paul
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Electric train
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« Reply #751 on: December 31, 2016, 09:12:48 » |
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From the BBC» : Crossrail carriage passes extreme-weather tests Extreme weather conditions have proved no match for Crossrail engineers whose train carriage has passed three weeks of rigorous testing.Snowy, windy and foggy conditions, as well as temperatures ranging from -25C (-13F) to 40C (104F), were simulated in a climatic wind tunnel in Vienna. In tests the front high-speed rail carriage proved itself equal to the variable British weather. Crossrail will open in 2017 linking 40 stations in London and the South East.  Named the Elizabeth Line in honour of the Queen, it is due to open in May. Operations director Howard Smith said: "It's important that we check that the new trains can operate in anything that the changing British weather can throw at them and it won't be long before our customers will be able to get on board a train." Weather simulations tested the heating, ventilation, air-conditioning system, windscreen wipers, demister, train horns and traction motors. The carriage, built by Bombardier Transportation in Derby, has returned to London for night testing. The problems will come when the trains enter the tunnels, as Eurostar found out a few years ago. Passing the environmental temperature changes is one thing entering a warm tunnel laden with snow and ice is another |
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Starship just experienced what we call a rapid unscheduled disassembly, or a RUD, during ascent,”
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ChrisB
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« Reply #753 on: January 19, 2017, 15:40:25 » |
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And wveryone is screaming for TfL» to take over suburban lines as they can handle major projects.....yeah, right
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Surrey 455
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« Reply #754 on: January 19, 2017, 23:26:23 » |
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Is there an English translation for this article? M&E? |
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Electric train
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« Reply #755 on: January 20, 2017, 07:10:50 » |
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Is there an English translation for this article? M&E? M & E I assume they mean mechanical & electrical which is lifts, escalators, pumps, ventilation, aircon, fans. lighting, heating, electrical power etc As this is one of the last major parts of the install when budgets get tight because the pervious parts the project have blown the budget often M & E items have to be reduced in scope and are stated on drawings as "future provision" |
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Starship just experienced what we call a rapid unscheduled disassembly, or a RUD, during ascent,”
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TaplowGreen
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« Reply #756 on: January 20, 2017, 10:04:27 » |
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Is there an English translation for this article? M&E? M & E = Mechanical and Electrical. |
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Noggin
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« Reply #757 on: January 20, 2017, 10:40:55 » |
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Is there an English translation for this article? M&E? - Someone has screwed up on the wiring plans for Crossrail - Electricians are being laid off whilst they get to grips with it - Completed work is having to be ripped out so that it can be started again - The project could be delayed months whilst it's sorted out However, there are a couple of things that make me wonder about the accuracy of this: 1) Isn't the whole Crossrail project supposed to have been computer modeled down to the last screw and bolt? can't believe that modelling wouldn't include wiring. 2) Hasn't there been a history of industrial unrest with the electricians, so maybe someone is making a mountain out a molehill? |
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Electric train
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« Reply #758 on: January 20, 2017, 16:23:11 » |
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Is there an English translation for this article? M&E? - Someone has screwed up on the wiring plans for Crossrail - Electricians are being laid off whilst they get to grips with it - Completed work is having to be ripped out so that it can be started again - The project could be delayed months whilst it's sorted out However, there are a couple of things that make me wonder about the accuracy of this: 1) Isn't the whole Crossrail project supposed to have been computer modeled down to the last screw and bolt? can't believe that modelling wouldn't include wiring. 2) Hasn't there been a history of industrial unrest with the electricians, so maybe someone is making a mountain out a molehill? 1) yes but if the install contractor does not use LSF cable and wiring (LSF low smoke & fume) for example 2) Electricians for install work like this are at a premium high demand due to all the construction work in the London area so it can be difficult to hire in the quantity and quality needed |
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Starship just experienced what we call a rapid unscheduled disassembly, or a RUD, during ascent,”
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Tim
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« Reply #759 on: January 23, 2017, 10:42:21 » |
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The problems will come when the trains enter the tunnels, as Eurostar found out a few years ago. Passing the environmental temperature changes is one thing entering a warm tunnel laden with snow and ice is another
agree. But I would hope that temperature changes are part of the tests as well. The refrigerated chamber in the photo looks like it has IR heat lamps in the wall. I assume that they freeze the train up then turn on the lamps to stimulate a rapid thaw. |
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Chris from Nailsea
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« Reply #760 on: January 23, 2017, 21:48:45 » |
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... or indeed, to simulate a rapid thaw.  |
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William Huskisson MP▸ was the first person to be killed by a train while crossing the tracks, in 1830. Many more have died in the same way since then. Don't take a chance: stop, look, listen.
"Level crossings are safe, unless they are used in an unsafe manner." Discuss.
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stuving
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« Reply #761 on: January 23, 2017, 22:19:02 » |
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... or indeed, to simulate a rapid thaw. I would expect - and hope - that such a test use real ice, and raise the actual temperature so the ice really melts (or thaws) to water. No simulation there. It would also be a better simulation if the air temperature could be raised very fast by in effect changing the air for new air stored outside, not by radiant heat, and I suspect any IR lamps are for some other purpose. |
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Chris from Nailsea
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« Reply #762 on: January 23, 2017, 22:23:15 » |
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Fair comment.  |
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William Huskisson MP▸ was the first person to be killed by a train while crossing the tracks, in 1830. Many more have died in the same way since then. Don't take a chance: stop, look, listen.
"Level crossings are safe, unless they are used in an unsafe manner." Discuss.
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CJB666
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« Reply #763 on: January 30, 2017, 11:24:47 » |
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"An extensive programme of work for Crossrail was delivered on the existing railway by Network Rail over Christmas. These works included the opening of a second ramp for the Stockley Flyover at Heathrow junction and a new dive under at Acton; bringing into use an extended bay platform at Hayes & Harlington, to allow Great Eastern Railway to bring in more new electric trains; track upgrades at Maidenhead and Shenfield; and platform extension work at West Ealing, Southall and Hayes & Harlington."
Er - the bay platform 5 at Hayes as been in use for years - likely over 100 years.
Er - is Great Eastern Railway - a new franchise?
Meanwhile H&H Station remains a building site with no sign of progress for over a year. Maybe it was demolished a tad early?
P.S. To the moderators I wonder if its an idea to have a separate section for Crossrail?
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ChrisB
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« Reply #764 on: January 30, 2017, 11:37:55 » |
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"bringing into use an extended bay platform at Hayes & Harlington..."
Er - the bay platform 5 at Hayes as been in use for years - likely over 100 years. That's not what they said, is it? |
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