⚠️🌧️ We're sorry to say that disruption is expected tonight and tomorrow morning across parts of South London, Surrey, Kent and Sussex, affecting @Se_Railway , @SouthernRailUK + @TLRailUK . Predicted rainfall means we are having to put a 40mph speed limit on some routes. /1
Vulnerable earthworks on certain lines are already saturated after last night's heavy rain, and with this storm on the way - and a yellow weather warning - we have to protect trains from the prospect of landslips or washouts. /2
This kind of washout can occur when heavy rain falls on saturated soil and we can't run the risk of trains ploughing into the debris at full speed. We're taking a careful approach and only putting the limits in place on routes where earthworks are at risk. They are... /3
In Kent:
Sevenoaks to Hastings
Redhill to Tonbridge
Swanley to Ashford
Medway Valley line. /4
In East Surrey and Sussex:
Croydon to East Grinstead and Uckfield
Dorking to Horsham and Reigate

The speed restriction in Kent starts at 1900 and runs through until 0700 tomorrow.
In Surrey and Sussex, it starts at 1800 and runs until 0300. /5
Although our metro areas are not affected there is still a chance of disruption, as longer distance services will be running late. Please do allow extra time for your journeys tonight and tomorrow morning and take care when travelling to and from stations. /6
We don't take these steps lightly, however we have to keep safety at the forefront of our planning. We will get people home and trains will run, but there will be delays.
Thank you for your patience. /Ends.

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More from @NetworkRailSE

22 Oct
⚠️⚡️ Were so sorry for the disruption to @Se_Railway + @TLRailUK passengers on the Orpington/Charing Cross line this morning - this is the problem right here, at #PettsWood. It’s a “blown insulated block joint”, although actually two of them have gone. /1 ImageImage
You can see the blocked lines just outside #PettsWood as they have BLOC in their train indicators. We’re able to run on the other 2 lines and the connecting loops at the bottom of the picture, which is why there is still a train service, albeit not a normal one. /2 Image
An insulated block joint is used to separate 2 track circuits, which use electric currents in the rails to tell us where trains are. This is one in happier times. /3 Image
Read 7 tweets
19 Oct
👷We're really sorry for the frustrating delays into London today for @Se_Railway & @TLRailUK passengers. The delays were caused by a cracked rail on a set of switches & crossings (S&C) (like the one pictured) near New Cross, which is a really busy part of the network. 👇
In the S&C are points which are movable sections of track which allow trains to move lines. Our engineers knew of the fault and were running trains at a reduced speed, so we could keep passengers moving, albeit slightly delayed, until we could get into fix the problem tonight. 👇
But a further inspection overnight yesterday revealed the defect (pictured) had got much worse. This meant we couldn't safely run trains, even at a reduced speed, and unfortunately we had to block the line.
Read 5 tweets
14 Sep
⚠️We’re sorry to say that despite our best efforts the derailed loco remains at #Lee, blocking the @Se_Railway Sidcup line this morning. The rescue team encountered serious problems last night with soft ground as it wasn’t solid enough to provide a stable base for the jack. /1
We’ve got 4 of 6 wheels on now and a new plan will see the involvement of another loco in dragging the engine back onto the rails. We’re just awaiting the arrival of that extra loco and driver and will be underway when they arrive. /2
We’re working with @Se_Railway to manage the emergency timetable so we can open the line as soon as it’s safe to do so. We’ll report back when we have a progress report from site but until then please accept our apologies for letting you down this week. /3
Read 4 tweets
13 Sep
⚠️Sorry to say @Se_Railway's Sidcup line is likely to remain blocked for most of the day while we work to re-rail a locomotive that came off the tracks at #Lee yesterday. The plan is to jack it up and move it back onto the rails from its current position (pictured). /1
@Se_Railway The location of the loco means it's impossible to run trains on the line as there's nowhere to switch tracks, so tickets are valid on some London buses (for full details see @Se_Railway ). We're checking over signalling and track at the same time as re-railing so... /2
@Se_Railway ... all being well we should have a railway back for tomorrow. Current estimations are that it will be at least nightfall before the engine has been moved and we will make sure everything is working properly before running passenger trains again. /3
Read 4 tweets
8 Sep
There’s just one more day of work on Sunday 3 October as part of our £22m Arun Valley Line Improvement Project. Please plan ahead and check before you travel at nationalrail.co.uk
Thank you @SouthernRailUK and @TLRailUK passengers for your patience while we’ve delivered this work to improve journeys today and long into the future. Here’s a quick recap of the work we’ve done to improve track, signalling, earthworks and stations on the #ArunValley Line
Our staff worked 80,000 hours on more than 40 miles of railway for a mixture of upgrades and maintenance across 120 different sites from #Arundel to #Crawley and from #Horsham to #Dorking
Read 9 tweets
8 Sep
⚠️🚦 We're sorry @Se_Railway passengers have had a disrupted morning today, after a points failure at #NewCross . The kit that failed is what we call a "switch diamond", circled in the diagram below. As well as being sensitive, they are also disruptive when they go wrong... /1
... because they potentially affect 3 lines at the same time. As you look at the diagram, you can see it sits amongst 3 lines, and when it failed - effectively stopped telling the signalling system it was safely locked into position - signals on all 3 routes went red. /2
We've secured the diamond into straight running position, so trains can run again, albeit without being able to use the crossovers. We should be able to run a normal service like that until tonight, when our technicians will come in + fault-find and get it fully fixed. /3
Read 4 tweets

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