^20m railway upgrade includes signalling. (Western Gazette 08/04/2010)

[whole diary]

[JayMac]

From the Western Gazette:

The signals on the railway running between south Wiltshire, Dorset and south Somerset is being upgraded as part of a ^20 million scheme.

Network Rail said some of the infrastructure on the 90-mile route between Salisbury and Exeter dated back to the 1960s and was coming to the end of its life.

The upgrade is expected to improve the reliability of the system and extend its lifespan for another 35 years.

Work will start this autumn.

[Electric train]

Although this project is in the WSK (Wessex. Sussex, Kent) IP (Investment Projects) area of S & E (signaling and el;electrification) this is being done by the the IP S&E LNW (London Northwester & Western) team based in Swindon.  The reason why IP S&E WSK are not involved is they have major schemes in East Kent, South Coast, Victoria (relocking) and number of other relocking or resignalling schems also part of the team who were doing London Bridge have transfered to Thameslink Program


A busy time in S & E projects

[JayMac]

Umm....

relocking?

[signalandtelegraph]

Umm....

relocking?

Substantial alterations, to track layout for example, that necessitates major changes to existing signalling control circuitry (interlocking) = relock

[Electric train]

Umm....

relocking?

Substantial alterations, to track layout for example, that necessitates major changes to existing signalling control circuitry (interlocking) = relock

This can also mean that the existing track layouts remain unaltered but the number of signal boxes is reduced, the control for several boxes being put into one box the "Absolute Block Working" principle is kept but instead of a man / woman manually forwarding and accepting trains this is being done by "computers" at locations which use track circuits or axel counters, auto signals etc to monitor trains and forward and receive them from one block to the next its not a full resignalling

[6 OF 2 redundant adjunct of unimatrix 01]

is this linked to my previous post or something different?
http://www.firstgreatwestern.info/coffeeshop/index.php?topic=8550.msg86504#msg86504

[paul7575]

Same job, it's just that NR^» (Network Rail - home page) have only recently issued their confirmatory press release - in their Wales and West section...

http://www.networkrailmediacentre.co.uk/Press-Releases/RAIL-PLAN-SIGNALS-PROGRESS-ON-SALISBURY-EXETER-170c/SearchCategoryID-7.aspx

Paul

[signalandtelegraph]

This can also mean that the existing track layouts remain unaltered but the number of signal boxes is reduced, the control for several boxes being put into one box the "Absolute Block Working" principle is kept but instead of a man / woman manually forwarding and accepting trains this is being done by "computers" at locations which use track circuits or axel counters, auto signals etc to monitor trains and forward and receive them from one block to the next its not a full resignalling

Thats a re-control not a relock.

[bradshaw]

Proposed G1 Network Change: Salisbury to Exeter Signalling Renewal Scheme This Network Change notice is issued in accordance with ....

It would seem that the present signalling system will be replaced and controlled by a work station at Basingstoke.
This link shows the document which mentions it, or just browse salisbury exeter signalling in the Network Rail site

http://www.networkrail.co.uk/browse%20documents/network%20code/network%20change/current%20proposals/wessex/ncg12010wesx006%20salisbury%20to%20exeter%20signalling%20renewal/a%20ncg12010wes006%20notification.pdf

Edited to fix link. bignosemac

[JayMac]

Thanks for that link bradshaw, and a very warm welcome to the Coffee Shop forum. 

[Electric train]

This can also mean that the existing track layouts remain unaltered but the number of signal boxes is reduced, the control for several boxes being put into one box the "Absolute Block Working" principle is kept but instead of a man / woman manually forwarding and accepting trains this is being done by "computers" at locations which use track circuits or axel counters, auto signals etc to monitor trains and forward and receive them from one block to the next its not a full resignalling

Thats a re-control not a relock.

I know you are right on this, as a Electrification Engineer my mind wanders during the S & E briefings when the finer points of re-locking re-control is discussed I expect my S&T^▸ (Signalling and Telegraph) colleagues do the same when we talk about 6 pulse or 12 pulse rectifiers    either way there is a lot of schemes being done ............. just hope Her Majesties Government do not scupper them