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Network Rail Kent & Sussex Profile picture
@NetworkRailSE
Jun 6 • 5 tweets • 3 min read Twitter logo Read on Twitter
We're really sorry for the disruption caused by a signalling fault at #HitherGreen.

Engineers are investigating the issue and have found an axle counter failure.

Some @Se_Railway services will be affected between Tonbridge and Ashford and Sidcup and Grove Park.

/1
⚙Axle counters work by counting train axles (wheels) into and out of separate sections of track, helping tell us where trains are on the line.

🛠They form a key part of our signalling systems and when there is a failure, this results in the signals turning red as a failsafe.
⚠️👍UPDATE: Our response staff have fixed the signalling fault.

The teams are carrying out final tests and @Se_Railway services should be back up and running soon through #HitherGreen.

Please continue checking before you travel as some services may be delayed.
📸Here's an axle counter head - the cable links it to a central unit that counts the axles and talks to the signalling system.

They are very sensitive to anything metallic and this empty drinks can is what's caused the system to failsafe. Once again, we're sorry for the delays. Image of axle counter and e...
🚯There is a simple solution for this problem. We're installing "litter guards" above the axle counter heads to stop metallic rubbish interfering with signals. 28 have been installed so far out of 51, and we're working out access overnight to get the others fitted ASAP

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More from @NetworkRailSE

Network Rail Kent & Sussex Profile picture
Jun 9
⚠️ In the early hours of this morning, a train derailed in Plumstead at low speed when it was passing over a set of points, the equipment which allows trains to move between tracks. /1
If you look closely, you can see the train isn't sitting correctly on the rails and became stuck, blocking the North Kent lines in both directions between Charlton and Slade Green. /2 Image
🔧In the last hour or so, our engineering teams have been working on a process to "re-rail" the train - in other words, to lift it from the stuck position and place it back, correctly, on the rails in order to move it forward. /3
Read 8 tweets
Network Rail Kent & Sussex Profile picture
Jun 7
❗️ London Victoria is currently closed due to a fire alarm sounding within the station.
⚠️ Trains in the area are being held and cannot currently run to or from the station.
➡️We're working closely with the local emergency services to reopen the station as quickly as we can, but in the meantime, please check with @Se_Railway and @SouthernRailUK for the latest journey information. More info to follow as we have it.
➡️ No sooner than our last tweet and the team on-site have identified the issue and are in the process of resolving it, so we can reopen the station to customers.
🚆Once fully reopened, we'll get trains moving as soon as we can.
Read 6 tweets
Network Rail Kent & Sussex Profile picture
Jun 6
⚠️🔥We're really sorry for the disruption to passengers through #Gillingham because of a track fire. We believe the problem is linked to the third rail, the electrified rail which feeds power to trains.
We have engineers on site now looking to get the railway open again ASAP. /1
⚡️It looks like there's damage to an insulator pot, the ceramic gadget that keeps the third rail off the ground. If they are damaged, and the third rail touches the ground, electricity can earth through the pot and cause a fire. /2
For safety reasons, we've had to switch the power off to trains on all platforms at #Gillingham until we can repair the damage. Once again, we're sorry for the disruption. Please keep checking with @Se_Railway for live travel updates. /3
Read 9 tweets
Network Rail Kent & Sussex Profile picture
May 19
❗️🔥We are sorry for the disruption to @Se_Railway passengers travelling into and out of London Bridge while @LondonFire deal with a track side fire. All lines are currently blocked. Please keep an eye on @Se_Railway for updates
👇 Here’s some photos from the fire at London Bridge, which is stopping trains from using platforms 6&7. Please keep checking with @Se_Railway for the latest advice. ImageImage
❗️🔥We are sorry for @TLRailUK passengers for the disruption at #LondonBridge. Platforms 4 & 5 have been closed while the London Fire Brigade deal with the trackside fire. Please keep checking @TLRailUK for the latest advice.
Read 4 tweets
Network Rail Kent & Sussex Profile picture
Dec 31, 2022
1/ We are in the final days of a major project to rebuild the complex and busy Lewisham Junction, #London

This thread will look at the various stages of work over the past 8 days, and why the project is important for @Se_Railway passengers.
2/ In the early stages of any track or junction replacement, after disconnecting power and signalling, we rip out the old rail, sleepers, and ballast.

The vast majority of the old materials will be recycled.
3/ Special matting and new ballast are laid to form the new track bed.

We used more than 6,300 tonnes of new ballast for this job.

But, why is the track bed so important?
Read 10 tweets
Network Rail Kent & Sussex Profile picture
Dec 7, 2022
Our friends @Se_Railway have been contacted by passengers who regularly ride on the line from #Margate to #Faversham via #Whitstable as to why their trains are running at a reduced speed in some places on the route.
They should be fixed soon but in the meantime, here's why... /1
@Se_Railway The route from Margate takes passengers from the chalky Isle of Thanet down to sea level near Birchington and then across a part of Kent that features a great deal of London Clay (a sort of yellowy gooey soil). /2
@Se_Railway The line across the marshes at Birchington (see below) is built up on an embankment built of that clay, as it was the only material the Victorian engineers had to hand when the line was constructed in 1863. /3
Read 16 tweets

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