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Author Topic: Great Western Main Line electrification - ongoing discussion  (Read 822566 times)
ZoŽ
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« Reply #570 on: March 01, 2011, 09:39:05 pm »

The Plaid AM referred to Wales as a country, so Northern Ireland is a fair comparison.
Plaid want independence so they consider themslves their own country.  Northern Ireland would remain part of the UK in that event.  Confusingly though all the home nations with the UK can be referred to as countries even though the UK itself is a country.
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woody
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« Reply #571 on: March 01, 2011, 10:21:26 pm »

Statement in the Commons (video):

http://news.bbc.co.uk/democracylive/hi/house_of_commons/newsid_9410000/9410594.stm




Edited to correct weblink. CfN.  Smiley
« Last Edit: March 01, 2011, 10:32:28 pm by chris from nailsea » Logged
Chris2
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« Reply #572 on: March 02, 2011, 09:16:59 am »

In general I believe that the announcement is good news for the great western main line, even though they are only initially going to electrify as far as Cardiff. As more wiring is put up the business case for ordering new diesel rolling stock is weakened, because of environmental benefits associated with electric rolling stock.At the same time the business case for extending the wiring is strengthened as commuter services between Cardiff and Bristol could be swapped to electric rolling stock. Which then strengthens the case for wiring to Taunton and then to Exeter. As long as a rolling programme of electrification is established eventually the wires may even reach Penzance but that could be a very long time away.
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ChrisB
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« Reply #573 on: March 02, 2011, 09:49:42 am »

They'll never go beyond PLY. PLY-PNZ will unfortunately end up the same as Cardiff-Swansea.

However, they have left it open to announce further knitting towards PLY before the HST replacement, so bi-mode may replace the HST eventually.
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Brucey
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« Reply #574 on: March 02, 2011, 12:25:37 pm »

Oh dear, the PM seems to think the West Coast Main Line runs to Cardiff Shocked
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anthony215
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« Reply #575 on: March 02, 2011, 02:29:44 pm »

Oh dear, the PM seems to think the West Coast Main Line runs to Cardiff Shocked

I think we all had a bit of a laugh about that (Ok when can i see a pendolino at cardiff then? lol)
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ZoŽ
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« Reply #576 on: March 02, 2011, 03:29:21 pm »

Which then strengthens the case for wiring to Taunton and then to Exeter. As long as a rolling programme of electrification is established eventually the wires may even reach Penzance but that could be a very long time away.
If you are going to wire Bristol to Exeter then continue to Plymouth.  Ending the wires at Exeter would be a bit pointless.  Very few trains from the north terminate at Exeter, almost all continue to Plymouth.  Services to Plymouth could then go over to EMU operation.  As noted by ChrisB though, Plymouth is as far as the wries will ever go so you'd still need bi-mode from Plymouth to Penzance.
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Chris2
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« Reply #577 on: March 02, 2011, 05:58:23 pm »

Which then strengthens the case for wiring to Taunton and then to Exeter. As long as a rolling programme of electrification is established eventually the wires may even reach Penzance but that could be a very long time away.
If you are going to wire Bristol to Exeter then continue to Plymouth.  Ending the wires at Exeter would be a bit pointless.  Very few trains from the north terminate at Exeter, almost all continue to Plymouth.  Services to Plymouth could then go over to EMU operation.  As noted by ChrisB though, Plymouth is as far as the wries will ever go so you'd still need bi-mode from Plymouth to Penzance.
Being realistic I have to agree with both of you that Plymouth is as far as the wires will go. But eventually when a certain percentage of the network or franchise is wired. It becomes sensible to extend the wiring to cover the entire franchise area. This therefore avoids the problem of diesels under the wires. But is extremely unlikely to occur.
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woody
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« Reply #578 on: March 02, 2011, 06:08:20 pm »

 I now think serious consideration should be given to eventually sending all West of England express services via Bristol in the future perhaps retaining a limited diesel operated Paddington/Taunton/Exeter service on the Berks and Hants with further electrification from Bristol on to Exeter/Plymouth thus concentrating these services and future investment where possible on the core Great Western route via Bristol equipped with European Rail Traffic Management System (ERTMS).This would be the best use of scarce resources longer term.With say mostly 125mph running Paddington to Bristol and  Bristol to Bridgewater and limited stop say Reading/Bristol/Taunton/Exeter and electric  acceleration journey times should be at least as good as todays Berks and Hants timings using a standard fleet of trains.Electrification would also benefit X country services from Bristol to Plymouth.
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ZoŽ
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« Reply #579 on: March 02, 2011, 06:24:59 pm »

I now think serious consideration should be given to eventually sending all West of England express services via Bristol in the future perhaps retaining a limited diesel operated Paddington/Taunton/Exeter service on the Berks and Hants with further electrification from Bristol on to Exeter/Plymouth.
Where is the logic in ending the wires at Exeter?  I don't even see why it should be a possibility unless you really want trains to switch to diesel for the short run to Plymouth.
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woody
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« Reply #580 on: March 02, 2011, 09:40:47 pm »

I now think serious consideration should be given to eventually sending all West of England express services via Bristol in the future perhaps retaining a limited diesel operated Paddington/Taunton/Exeter service on the Berks and Hants with further electrification from Bristol on to Exeter/Plymouth.
Where is the logic in ending the wires at Exeter?  I don't even see why it should be a possibility unless you really want trains to switch to diesel for the short run to Plymouth.
A simple misunderstanding here I think Zoe.I did mean electrify to Plymouth to Bristol not just Exeter to Bristol.
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« Reply #581 on: March 02, 2011, 10:35:59 pm »

Optimistic thoughts of wires to Plymouth either of the route has not had any consideration, there has been not feasibility study or outline power supply study.
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Mark Carne 26 June 2015 - "The challenges of delivering myriad improvement projects while still running a railway seven days a week were simply overwhelming".
ZoŽ
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« Reply #582 on: March 02, 2011, 10:54:35 pm »

Optimistic thoughts of wires to Plymouth either of the route has not had any consideration, there has been not feasibility study or outline power supply study.
Well the decision to retain HSTs for now has at least given a few years for this to be considered so a decision can be made on electrification, bi-mode or DMUs.
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anthony215
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« Reply #583 on: March 02, 2011, 10:55:32 pm »

Optimistic thoughts of wires to Plymouth either of the route has not had any consideration, there has been not feasibility study or outline power supply study.

Doubt network rail would put wires along the dawlish seawall
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ZoŽ
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« Reply #584 on: March 02, 2011, 10:57:27 pm »

Doubt network rail would put wires along the dawlish seawall
It's not as much of a problem as people think and has already been done at Saltcoats.  Even if it was a problem you could always put the line between Dawlish Warren and Teignmouth inside a shelter.
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