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Network Rail Wessex Profile picture
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11 Jun, 5 tweets, 2 min read
We're so sorry for the disruption @SW_Help customers are enduring today from @LondonWaterloo . We've got a technical update for you, but first here's our regional director, John Halsall, with a message for passengers: 👇 /1
@SW_Help @LondonWaterloo On the ground, we've narrowed the failure to what we think is a damaged stretch of cable in the Surbiton area - two cables actually - carrying two separate data links. /2
It's in a part of the railway that's difficult to access, so our plan is to roll out 500m of new cable, and bypass the damaged section. Our teams have been on site all day and continue to work hard to get things running again. /3
This thread from earlier explains more about the data links etc
/4
Until we are able to start things moving again, please do not travel, and as always check with @SW_Help for travel advice. Thank you. /Ends

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More from @NetworkRailWssx

Network Rail Wessex Profile picture
11 Jun
⚠️There is major disruption across all routes from @LondonWaterloo owing to a serious signalling problem and we're advising passengers not to travel from there today - here's our statement with @SW_Help /1 Major disruption Customers advised not to travel from Waterl
@LondonWaterloo @SW_Help The scale of the problem is such that we cannot control signals in the red box, from New Malden to Esher, so trains are having to get permission to pass all of them at red. They do this by phoning the signaller at New Malden, and again when they leave the section at Esher. /2
It's called Emergency Special Working and it allows very few trains to run, and nowhere near as many as we need to carry passengers safely and with social distancing. Hence our "do not travel" advice, which is really, really important. /3
Read 7 tweets
Network Rail Wessex Profile picture
11 Jun
⚠️ We are working to fix a track circuit failure that is causing service disruption through the Surbiton area affecting trains from London Waterloo and also between New Malden and Esher.

Please check before you travel via @nationalrailenq

Updates to follow.
⚠️ Trains are having to be talked past signals and run under caution. Services from London Waterloo may be subject to short notice changes and some may divert via Epsom and Chertsey. Please check your journey with @GWRHelp, @SW_Help and @nationalrailenq.
⚠️ We are sorry to report that the severe disruption looks likely to continue throughout the afternoon as we work to fix this track circuit failure.

Please try to find alternative routes and avoid London Waterloo station while this is resolved. @SW_Help @GWRHelp
Read 5 tweets
Network Rail Wessex Profile picture
9 Jun
⚠️ We’re sorry to say that @SW_Help trains are still being disrupted between Salisbury and Gillingham owing to a problem with our equipment at Tisbury Loop (see picture). This has been going on for some time but we should have good news soon. /1 Image
The train detection equipment that controls access to the Loop, where trains pass each other , has been failing intermittently and can’t be relied on - effectively meaning signals turn from green to red and back again. /2
Our signaller is working around the problem by not letting two trains pass each other at Tisbury, but this means we can’t run as many services as we should. We’ve found a damaged section of cable that links the loop to Salisbury signalbox and we are preparing to cut it out.../3
Read 5 tweets
Network Rail Wessex Profile picture
20 Dec 19
Today, passengers using the railway across the Southern region have had a pretty dreadful time of it due to some extreme weather across the area. Here's a thread about what happened and why.. @SW_Help @GWRHelp 1/11
@SW_Help @GWRHelp We have just endured one of the wettest autumns since records began more than 100 years ago. This, combined with a month’s worth of rainfall over the past five days, has put unprecedented strain on our railway network to do something it wasn’t designed to do. 2/11
@SW_Help @GWRHelp Severe flooding causes significant challenges for the railway. When the water rises above the rails, we have to stop trains, so it doesn’t take much. Flooding can also dislodge ballast, the stones which support the track, cause damage to electrical equipment which controls.. 3/11
Read 11 tweets

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