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Balcombe Tunnel report and concerns

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tony6499

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Worrying stuff in the report

Balcombe Tunnel
Balcombe Tunnel repair failures 'could have been fatal'

Passengers on the London to Brighton line could have been killed because of years of maintenance work failures in a Victorian tunnel, a whistle-blowing rail engineer has claimed.


Balcombe Tunnel, near Crawley, West Sussex, was shut for 22 hours in September 2011 after workers discovered the partial collapse of a metal ceiling platform.


A report into the incident highlighted Network Rail failures that left large girders hanging inches above trains.



The Network Rail engineer, who does not want to be named, told BBC Inside Out South East if one of the steel beams had hit a carriage passengers would have died...
 
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61653 HTAFC

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Just watched the video linked to in the article. Nothing amiss, until a section with a CGI animation depicting the 2011 failure showed a bright yellow TGV running through the tunnel! :roll:
 

Murph

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Nice to see that the BBC have their finger firmly on the pulse, breaking the story a mere 45 days after an official public report was published… Top work!

:roll:
 

wessex

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13 Balcombe tunnel has had significant water ingress since the time of its construction. This has caused rail corrosion, short circuiting of third rail
electrification equipment and the formation of icicles during cold weather. To
improve operational reliability, five water catchment trays (numbered 2 to 6)
were installed in the roof of the tunnel in 1998/9. These trays were built with
a combined length of 152 metres and were positioned over the railway tracks
above train roof level (figure 3). All were located under ventilation shafts, with
the exception of tray 2 which was located between shafts 1 and 2. A sixth water
catchment tray (tray 1) was installed close to the London end of the tunnel in
2006/7 beneath shaft 1, but this was to a different design and is not discussed
further in this report.

As I remember the tunnel was like a train washer, cleaned the screen in the summer though :D
 

Mugby

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Even Doctor Lardner expressed concern about Balcombe Tunnel!
 

Murph

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As I remember the tunnel was like a train washer, cleaned the screen in the summer though :D

Maybe they should have added a soap dispenser, instead of catch trays. Would probably have been a lot cheaper. ;)
 

infobleep

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Thanks for the links tony6499 and John Webb. The BBC might be hyping, which isn't uncommon but the original report will make for interesting reading, nevertheless.

It's not often one gets to see photos from inside a tunnel they semi-regularly travel through. I would love to be able to visit some of these tunnels from outside the train but quite rightly I can't.
--- old post above --- --- new post below ---
Before they introduced the drainage trays into Balcome Tunnel, where there a lot more problems with trains being stranded due to electrical power supply problems caused by the water?
 
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edwin_m

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Don't know about Bramhope, but there is another report on the RAIB website about the 185 damaged by hitting an icicle in Summit Tunnel which had formed during several days of no service.
 
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