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Author Topic: Infrastructure problems in Thames Valley causing disruption elsewhere - ongoing, since Oct 2014  (Read 1243722 times)
TaplowGreen
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« Reply #2415 on: January 16, 2018, 09:19:55 »

Cancellations to services between Slough and Ealing Broadway


Due to a safety inspection of the track between Slough and Ealing Broadway some lines towards London Paddington are blocked.
Train services running through these stations may be cancelled or delayed by up to 20 minutes. Disruption is expected until 13:00 16/01.
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Jason
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« Reply #2416 on: January 16, 2018, 19:23:23 »

Due to a speed restriction over defective track between Hayes & Harlington and London Paddington fewer trains are able to run on some lines towards London Paddington.
Impact: Train services running to and from these stations may be revised. Disruption is expected until 22:00 16/01.
Customer Advice: Heathrow Connect services are running non stop between Hayes & Harlington and Paddington.
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IndustryInsider
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« Reply #2417 on: January 16, 2018, 20:28:16 »

Track defect leading to a 20mph speed restriction on the up main.
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didcotdean
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« Reply #2418 on: January 16, 2018, 21:10:41 »

Now expected not to be rectified until 22:00 Thursday.
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rower40
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« Reply #2419 on: January 16, 2018, 22:19:36 »

Now expected not to be rectified until 22:00 Thursday.
Which begs the questions...
How many trains will pass over it, albeit at 20mph, until then?
Will that cause the defect to worsen?
How long a daytime closure would be needed to rectify it sooner - and would that entail closure of one or both adjacent lines?

On roads, the wear-n-tear increases as the 5th power of the axle load.  (Double the axle load, increase the tarmac damage by 32 times.). I don't know how speed affects that calculation.  Are there any track engineers out there that can give the equivalent sums for rail?

(and for $64k) Will a train derail between now and Thusday 2200 hrs?
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a-driver
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« Reply #2420 on: January 17, 2018, 02:34:53 »

(and for $64k) Will a train derail between now and Thusday 2200 hrs?

Simple answer. No.
There are plenty of 20mph speed restrictions up and down the country for track defects that never cause a derailment. It’s not a new thing. I’ve driven over track before with a 5mph speed restriction.
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SandTEngineer
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« Reply #2421 on: January 17, 2018, 09:03:04 »

Its probably a cracked cast magnese crossing (again)......  They are OK to travel over at 20mph and a track watchman is usually put in place to keep an eye on it.  The delay is usually due to having to get the new crossing (they are no lightweight thing), staff and kit on site to do the change.

This could all be guessing though, it might just be that Network Rail (NR» (Network Rail - home page)) aren't organised enough to correct whatever defect it is, in 24 hours..... Roll Eyes Tongue

Edit: VickiS - Clarifying Acronym
« Last Edit: April 16, 2021, 16:24:55 by VickiS » Logged
Jason
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« Reply #2422 on: January 17, 2018, 09:16:38 »

It may be that was the worst case being quoted, this is now updated to:
"Disruption is expected until 15:00 17/01"
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eightf48544
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« Reply #2423 on: January 17, 2018, 11:08:24 »

I thought the excessive padding in the timetables was inserted to take care of TSRs (Temporary Speed Restriction)?
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TaplowGreen
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« Reply #2424 on: January 17, 2018, 16:46:21 »

It may be that was the worst case being quoted, this is now updated to:
"Disruption is expected until 15:00 17/01"

Pushed out again

Due to a speed restriction over defective track between Hayes & Harlington and London Paddington trains have to run at reduced speed on some lines towards London Paddington.
Train services running to and from these stations may be delayed by up to 10 minutes or running non stop between Hayes & Harlington and London Paddington. Disruption is expected until 23:59 17/01.
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Electric train
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« Reply #2425 on: January 17, 2018, 17:42:34 »

Its probably a cracked cast magnese crossing (again)......  They are OK to travel over at 20mph and a track watchman is usually put in place to keep an eye on it.  The delay is usually due to having to get the new crossing (they are no lightweight thing), staff and kit on site to do the change.

This could all be guessing though, it might just be that NR» (Network Rail - home page) aren't organised enough to correct whatever defect it is, in 24 hours..... Roll Eyes Tongue

SandTEngineer could right, some of the castings are specials and only a few are held Nationally.

The other problem is the cutting, stressing and welding in sub zero rail temperatures, UK (United Kingdom) rail is stressed for a normal 20oC the Track Engineer may be reluctant to do this operation with the current tempratures 
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TaplowGreen
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« Reply #2426 on: January 18, 2018, 11:13:41 »

.....here we go again...

 
Cancellations to services between Southall and Slough

Due to a speed restriction over defective track between Southall and Slough fewer trains are able to run on some lines towards Slough.
Train services running through these stations may be cancelled or delayed by up to 20 minutes. Disruption is expected until 14:30 18/01.
Further Information
Trains from London Paddington/Southall towards Slough/Reading, are unable to call at Hayes, West Drayton, Iver and Langley.
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Louis94
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« Reply #2427 on: January 18, 2018, 11:29:08 »

.....here we go again...

 
Cancellations to services between Southall and Slough

Due to a speed restriction over defective track between Southall and Slough fewer trains are able to run on some lines towards Slough.
Train services running through these stations may be cancelled or delayed by up to 20 minutes. Disruption is expected until 14:30 18/01.
Further Information
Trains from London Paddington/Southall towards Slough/Reading, are unable to call at Hayes, West Drayton, Iver and Langley.

5mph ESR (Emergency Speed Restriction ) due to a broken insulated rail joint. Sounds like they are hoping to replace it this afternoon.
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Jason
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« Reply #2428 on: January 18, 2018, 12:31:42 »

Due to a fault with the signalling system between Didcot Parkway and Reading some Didcot Parkway lines are blocked.
Impact: Train services running to and from these stations may be delayed. Disruption is expected until 13:00 18/01.
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grahame
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« Reply #2429 on: January 18, 2018, 12:38:42 »

Due to a fault with the signalling system between Didcot Parkway and Reading some Didcot Parkway lines are blocked.
Impact: Train services running to and from these stations may be delayed. Disruption is expected until 13:00 18/01.

Greetings from 1C12 at Goring and Streatley

Fast lines westbound closed ... everyone on the slow lines

Err - sorry - main lines closed ... everyone on the relief

Said to be a "broken rail" to us on the train.  Presumably the track is strong enough to take the new trains?
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