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Author Topic: Great Western Main Line electrification - ongoing discussion  (Read 98175 times)
onthecushions
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« Reply #855 on: September 03, 2019, 09:31:06 am »

But if you look at this pic from Durham you can see that it's certainly possible to have something very visually unobtrusive without resorting to extreme measures.

As long as you donít mind it all getting blown down when the wind picks up...  Wink

But these are portals not headspans, surely, so not even the big bad wolf could blow them down.

Conservation usually promotes good, neat, well proportioned modern design, as here.

IMHO the Steventon bridge problem has nothing to do with historic conservation other than  mis-using the legislation.

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onthecushions
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« Reply #856 on: September 07, 2019, 09:31:19 am »


On another website it is reported that the speed limit through Steventon will be raised to 110mph from 0930 Sunday 15 September (including the 387's).

I imagine that when the bridge has finally to be rebuilt it may be at the expense of the triumphant Council Tax payers of the District, not NR.

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ellendune
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« Reply #857 on: September 07, 2019, 10:58:33 am »


On another website it is reported that the speed limit through Steventon will be raised to 110mph from 0930 Sunday 15 September (including the 387's).

I imagine that when the bridge has finally to be rebuilt it may be at the expense of the triumphant Council Tax payers of the District, not NR.

OTC

No it is railway bridge and unless it is rebuilt as part of a road improvement scheme it will remain down to NR. Even then, the highway authority would probably require a contribution from NR for betterment. 
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Electric train
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« Reply #858 on: September 11, 2019, 06:58:25 am »

The Bath problem (and a few other similar places).  Now, after the end of October, when we can choose to no longer comply with TSIs (well, isn't that what B****T is supposed to be about) how about this: Yesterday I was travelling under/looking at the tramway style of 25kV electrification leading into the Depot at Soho in Birmingham.  It appears to use a single wire (so not actually catenary) and simple MK1 structures (quite slim and unobtrusive).  If view of the low speeds and the fact most trains stop at Bath, why not use it there?  Now where is ET when you need him Wink

The "trolley wire" systems used in depots are designed for a max lines speed of 15 or so mph and relatively low traffic and power densities.

I believe on of the issues at Bath is to do with the position of the Pan on the class 80X trains over the passenger door.  There is also the unresolved aesthetics objections through Bath, all of which made it easy for DfT to pull the plug.

It has been stated by the DfT, ORR and RSSB that the UK will continue to comply with TSI's post B-----t certainly for the foreseeable future they are part of the "great repeal Bill"
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« Reply #859 on: September 12, 2019, 11:19:01 am »

The Bath problem (and a few other similar places).  Now, after the end of October, when we can choose to no longer comply with TSIs (well, isn't that what B****T is supposed to be about) how about this: Yesterday I was travelling under/looking at the tramway style of 25kV electrification leading into the Depot at Soho in Birmingham.  It appears to use a single wire (so not actually catenary) and simple MK1 structures (quite slim and unobtrusive).  If view of the low speeds and the fact most trains stop at Bath, why not use it there?  Now where is ET when you need him Wink

The "trolley wire" systems used in depots are designed for a max lines speed of 15 or so mph and relatively low traffic and power densities.

I believe on of the issues at Bath is to do with the position of the Pan on the class 80X trains over the passenger door.  There is also the unresolved aesthetics objections through Bath, all of which made it easy for DfT to pull the plug.

It has been stated by the DfT, ORR and RSSB that the UK will continue to comply with TSI's post B-----t certainly for the foreseeable future they are part of the "great repeal Bill"

Could you explain why the position of the pan would be a problem in Bath and is not, say a problem in Didcot or another station with similar canopies?
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ray951
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« Reply #860 on: September 15, 2019, 07:12:13 pm »

Good to see IET trains running through Didcot with pantographs up today. I believe it is 3 years since the first electric trains ran to Didcot, so better late than never.
Now let's finish the electrification to Oxford.
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paul7755
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« Reply #861 on: September 15, 2019, 08:33:35 pm »

Could you explain why the position of the pan would be a problem in Bath and is not, say a problem in Didcot or another station with similar canopies?
Wasnít the problem electrical clearance between pantograph horns and listed canopies, so they solved it by building the platforms out a couple of years ago?

Paul
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ray951
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« Reply #862 on: September 15, 2019, 08:45:57 pm »

Problem was a road bridge at Steventon a few miles west of Didcot, as mentioned earlier NR have found a way to run IET trains at 110mph on electric through the bridge, this started today.
Before today most IETs going through Didcot were on diesel power, now all IETs except those going to/from Oxford can be on electric power.
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Bmblbzzz
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« Reply #863 on: Yesterday at 09:16:50 am »

Could you explain why the position of the pan would be a problem in Bath and is not, say a problem in Didcot or another station with similar canopies?
Wasnít the problem electrical clearance between pantograph horns and listed canopies, so they solved it by building the platforms out a couple of years ago?

Paul
It was caused or partly caused by the curvature of the platforms IIRC.
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Western Pathfinder
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« Reply #864 on: Yesterday at 09:31:04 am »

I'm hearing that the knitting has gone live from Patchway through Pilning and the Severn Tunnel,,not in service as of yet but undergoing testing .
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onthecushions
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« Reply #865 on: Yesterday at 10:46:11 am »

I'm hearing that the knitting has gone live from Patchway through Pilning and the Severn Tunnel,,not in service as of yet but undergoing testing .

...all the way to St Bride's ATFS at 162m01c if railuk forum tells us true.

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