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Author Topic: Infrastructure problems in Thames Valley causing disruption elsewhere - ongoing, since Oct 2014  (Read 1243710 times)
eightf48544
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« Reply #2835 on: July 19, 2018, 10:38:32 »


No

Obviously someone not versed in GWR (Great Western Railway) (1923) terminology.

Main and Reliefs.
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SandTEngineer
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« Reply #2836 on: July 19, 2018, 15:28:01 »

....and GOODS..... Tongue
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Western Enterprise
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« Reply #2837 on: July 20, 2018, 10:42:16 »


No

Obviously someone not versed in GWR (Great Western Railway) (1923) terminology.

Main and Reliefs.

Must be a LNER» (London North Eastern Railway - about) interloper..... Grin Grin
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TaplowGreen
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« Reply #2838 on: July 22, 2018, 16:39:38 »

Looking at the weather forecast this week the temperature looks to be edging into the 90s for the LTV (London [and] Thames Valley) area virtually every day...…...what price loads of delays/cancellations for melting rails?

We've been largely surprisingly free of this so far during this warm period, but I have an inkling that luck may be coming to an end...……... Sad
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grahame
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« Reply #2839 on: July 22, 2018, 17:02:41 »

Looking at the weather forecast this week the temperature looks to be edging into the 90s for the LTV (London [and] Thames Valley) area virtually every day...…...what price loads of delays/cancellations for melting rails?

We've been largely surprisingly free of this so far during this warm period, but I have an inkling that luck may be coming to an end...……... Sad

Quote
14:14 Weymouth to Bristol Temple Meads due 16:35
14:14 Weymouth to Bristol Temple Meads due 16:35 has been previously delayed and is now 17 minutes late from Frome.
This is due to a speed restriction because of high track temperatures.
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Jason
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« Reply #2840 on: July 23, 2018, 15:55:04 »

Indeed:

Due to a speed restriction because of high track temperatures at Oxford trains have to run at reduced speed on all lines.
Impact: Train services running through this station may be delayed by up to 15 minutes. Disruption is expected until 18:00 23/07.
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tomL
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« Reply #2841 on: July 23, 2018, 16:48:27 »

Indeed:

Due to a speed restriction because of high track temperatures at Oxford trains have to run at reduced speed on all lines.
Impact: Train services running through this station may be delayed by up to 15 minutes. Disruption is expected until 18:00 23/07.

Isn’t this the age old problem of it being fresh track layed over the last couple of weeks? Always a pain regardless.
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broadgage
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« Reply #2842 on: July 23, 2018, 17:13:53 »

An official "level 3 or amber" heatwave alert has been issued covering the South east of England.

This warns that "action is required" though the actions that most of us can take are rather limited. I do not normally carry drinking water when away from home, but would so during a heat wave warning.
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A proper intercity train has a minimum of 8 coaches, gangwayed throughout, with first at one end, and a full sized buffet car between first and standard.
It has space for cycles, surfboards,luggage etc.
A 5 car DMU (Diesel Multiple Unit) is not a proper inter-city train. The 5+5 and 9 car DMUs are almost as bad.
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« Reply #2843 on: July 23, 2018, 18:23:12 »

Indeed:

Due to a speed restriction because of high track temperatures at Oxford trains have to run at reduced speed on all lines.
Impact: Train services running through this station may be delayed by up to 15 minutes. Disruption is expected until 18:00 23/07.

Isn’t this the age old problem of it being fresh track layed over the last couple of weeks? Always a pain regardless.

Indeed it is.  Basically a 50mph Temporary Speed Restriction throughout much of the area has been reduced further to 20mph.  No more than 3-4 minutes delay as a direct result of that, though or course reactionary delays increased that a little for some services.  I would expect similar restrictions until the end of the week given the hot weather.
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To view my GWML (Great Western Main Line) Electrification cab video 'before and after' video comparison, as well as other videos of the new layout at Reading and 'before and after' comparisons of the Cotswold Line Redoubling scheme, see: http://www.dailymotion.com/user/IndustryInsider/
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« Reply #2844 on: July 24, 2018, 06:23:13 »

Same 20mph heat restriction today, but from 13:00-18:00 so three hours less in length.
« Last Edit: July 24, 2018, 06:54:03 by IndustryInsider » Logged

To view my GWML (Great Western Main Line) Electrification cab video 'before and after' video comparison, as well as other videos of the new layout at Reading and 'before and after' comparisons of the Cotswold Line Redoubling scheme, see: http://www.dailymotion.com/user/IndustryInsider/
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« Reply #2845 on: July 24, 2018, 07:33:25 »

The one thing that concerns the Track Engineer at this time of the year is CRT(resolve) (Critical Rail Temperature)

They will design the track to be stable over a wide range of temperatures normally expected in the UK (United Kingdom), the nominal ambient is 20 deg C and that is what they stress the CWR (Continuously Welded Rail) (continuously weld rail) too.  Factors that effect it are curves and the cant, normal line speed, S&C (Settle and Carlisle ) etc.  What can impact on the CRT is where the ballast shoulder has been disturbed, new track that has not been fully tamped, condition of the ballast perhaps where it has not been renewed etc.

In the relatively (to the UK) extream tempratures we are expierencing at the moment each of the Route Track Eng, local PWay managers and the NR» (Network Rail - home page) Ops teams will be holding regular teleconference through the day to make the judgement call on ESR (Emergency Speed Restriction )'s they will always default the side of being safe.
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Starship just experienced what we call a rapid unscheduled disassembly, or a RUD, during ascent,”
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« Reply #2846 on: August 02, 2018, 15:19:58 »

Not looking good at Oxford at the moment:

Quote
Due to a fault with the signalling system at Oxford trains have to run at reduced speed on all lines. Disruption is expected until 17:30 02/08.

Train services between Didcot Parkway and Oxford may be cancelled or delayed by up to 30 minutes.

Train services between Worcester Shrub Hill and Oxford may be cancelled or delayed by up to 30 minutes.

Train services between Banbury and Oxford have been suspended. Banbury, Kings Sutton, Heyford and Tackley will not be served.

It's not clear what the issue is but there are some significant delays and cancellations, with CrossCountry northbound services also affected by a broken down train.

(edit) Bit more info from CrossCountry Journeycheck:

Quote
Due to a fault with barriers at a level crossing at Oxford trains have to run at reduced speed on all lines.
« Last Edit: August 02, 2018, 15:26:13 by charles_uk » Logged
bobm
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« Reply #2847 on: August 02, 2018, 15:27:52 »

A problem with the phone system means every crossing - including farm ones - between Didcot and Banbury have had to be locked out of use before trains could run again.
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charles_uk
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« Reply #2848 on: August 02, 2018, 17:47:19 »

Not sure about the impact though there seems to be a lot running late through Reading at present, but, for the record:

Quote
Cancellations to services between Didcot Parkway and Reading

Following a fire on a train between Didcot Parkway and Reading some lines have now reopened.

Train services running through these stations may be cancelled or delayed by up to 60 minutes. Disruption is expected until 18:30 02/08.

Customer Advice
London-bound fast line remains blocked, but Didcot-bound lines have reopened.
Last Updated:02/08/2018 17:35

and

Quote
Delays to services between London Paddington and Reading

Due to a fault with the signalling system at Slough trains have to run at reduced speed on some lines towards Reading. Disruption is expected until 19:30 02/08.

Train services between London Paddington and Reading may be delayed by up to 15 minutes.

Additional Information
Customers travelling to Burnham or Taplow are advised to travel through to Maidenhead and change at Maidenhead for services back to Taplow and Burnham.

Customers travelling from Taplow or Burnham should take the first available service to Slough and change at Slough to travel West.
Last Updated:02/08/2018 17:40
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bobm
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« Reply #2849 on: August 02, 2018, 17:54:07 »

Not sure about the impact though there seems to be a lot running late through Reading at present, but, for the record:

Quote
Cancellations to services between Didcot Parkway and Reading

Following a fire on a train between Didcot Parkway and Reading some lines have now reopened.

Train services running through these stations may be cancelled or delayed by up to 60 minutes. Disruption is expected until 18:30 02/08.

Customer Advice
London-bound fast line remains blocked, but Didcot-bound lines have reopened.
Last Updated:02/08/2018 17:35

There is a slight Cotswold connection charles_uk.  Small fire on power car 43053 University of Worcester.  Train now reached Reading - but I don't think it will be going any further.....



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