Sorry to say we've had a problem between #Robertsbridge + #Battle on @Se_Railway's #Hastings line all morning - and it is likely to continue for the rest of the day. The issue is a cable fault around Mountfield (pictured) 1/
The cable is 37-core - which means 37 individual strands - and the fault is affecting 2 level crossings, 4 signals and 7 train detection circuits in the area below. It's a 600metre length cable and we have a team of 7 on site trying to narrow down the failure. /2
Our cables on this route are hidden in troughs so the team is walking the line looking for obvious external damage. It may not be obvious - it could be inside the sheathing - so they are also testing each "core" to see which ones are misbehaving. /3
What that adds up to is that this could be a lengthy process and we are sourcing a length of 600m cable so if we have to replace the whole thing, then we can. Meanwhile, @Se_Railway are running buses between #Battle and #Robertsbridge /4
In the meantime, please accept our apologies for the disruption to your journeys. We'll report back on this feed when we know more about the damage and the timescale for fixing - however disruption is likely all day. For travel info go to:…

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More from @NetworkRailSE

11 Nov
⚠️ There's some big changes to @Se_Railway services through #Chislehurst tonight and tomorrow morning, affecting trains to #Sevenoaks, #Tonbridge and further afield. The reason is emergency engineering work related to this pink rail - read on... /1
The rail is dyed pink so the crack you can see on the left can be seen more clearly - and it's the crack that's causing the disruption. It's part of a crossing, that allows trains to cross from one track to another, and the crack means trains can only pass over it at 5mph. /2
This shows the crack seen through a handheld scanner and you can see from the scale of it that we can't leave this in place for long and still run a normal service, so tonight our team from Orpington Delivery Unit is coming in to cut the section out and replace it. /3
Read 7 tweets
2 Nov
It was great for us, @CostainGroup, @Gatwick_Airport + @GatwickExpress to welcome @HenrySmithUK to #Gatwick today, to see how we're building for a brighter future with @transportgovuk . Read more about the £150m development here ⬇️ /1… Image
This blue sky will be filled with a new overhead concourse, stretching across platforms 7-5, and platforms 5-6 (currently out of use) will be rebuilt much wider, with new escalators and lifts to make travelling through Gatwick's station much easier for everyone. /2 Image
This former escalator from platforms 5+6 is no more, and the footbridge is also set for demolition - a tough task with trains running on the Brighton Main Line underneath! /3 Image
Read 5 tweets
27 Oct
A few people have asked why the "new" platform 7 at Gatwick isn't level with the doors on the train in the pic and why we couldn't just build it higher. It's a sensible question and to save everyone getting a slightly different answer, here's why... /1
Very few mixed-use (freight and passenger) railways anywhere in the world have true level access to trains. As the owner of a legacy system dating back to the 1830s we're often in the position of having to make the most of a bad hand and our platforms heights are no different. /2
Over time we've alighted on a standard platform height of 915mm across the UK, with some room for variation. That standard is what all train providers work towards so all their stock (freight and passenger) will run past platforms without scraping them or worse. /3
Read 13 tweets
24 Aug
UPDATE: You'll have seen plenty of coverage of this picture today and yesterday, showing the derailed train at #Tonbridge. Here's a brief overview of where we are and what we are doing, also why @Se_Railway are affected even though it's not their train... /1
This picture shows clearly the cables cut when the low-speed derailment happened yesterday, in sidings off the line to Redhill. The cut cables mean those sidings are completely "dead" and trains can't move. That includes @Se_Railway trains, which are trapped without power. /2
Our colleagues @Se_Railway are running as many trains as they can on the Tonbridge/Charing Cross services but there will be some cancellations as some of those trains are usually formed of stock trapped in the sidings today. Please check with them for travel details /3
Read 9 tweets
29 Jul
We’ve been filling your timelines with #HitherGreen content this week to show what we’ve been doing while no @Se_Railway trains are running in the area, and now it’s time for a serious #geekthread! What is signalling and why are we replacing it? /1
Signalling allows for the safe movement of trains, making sure they don’t hit each other, and making sure they’re literally on the right tracks. A train travelling at 90mph will take a mile or so to stop, so these are much more than traffic lights. /2
Our 92 signals in #HitherGreen are now mostly 4-aspect (colour) LEDs. The reason for 4 aspects is to give trains time to slow down. These go red, yellow, double yellow, green. Red means STOP, yellow means “caution, the next signal is red”. /3
Read 23 tweets
22 Jul
If you enjoyed our #geekthread on the upcoming #HitherGreen engineering work, which marks the end of 46-years of signalling from this brutalist building at London Bridge, you might enjoy this mini-thread... /1 Image
Among the sadness from everyone who has worked at this signalling centre is the knowledge that the railway is always evolving, and when London bridge box opened it took with it some smaller boxes, including the busiest in the country...
Borough Market Jn (pic @RailwayMuseum ). /2 Image
Perched high on the viaduct above the market, it signalled 100 trains per hour at the busiest times, using an old lever frame (pictured), and was a two-man job. Amazingly, the box has been preserved @RailwayMuseum , which reopens to the public on 4 August. /3 Image
Read 6 tweets

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