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Post by goldenarrow on Mar 5, 2018 20:20:41 GMT
The Uxbridge Branch has got a couple weekend closures coming up, following the 23 day blockade of in 2014 plus other closures recently , I can only think of a few examples of untouched sections of track. | Area (for clarity) | Point No(s). | Remarks | | Uxbridge Platforms | 28/29 & 30/31 | Worked on in 2014? | | Access from UXB Sidings to Main | 33/32 & 48/49 | Slip switch on 48/49 to be removed? | | Rayners Lane Junction | 11 & 12 | 13 & 14 (tralling) already replaced | | Rayners Lane Siding | 9/10 |
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Do all points on the SSL's (Sub-Surface Lines) need to be non-airworked to be compatible for resignalling or are they being phased out just as components reach the end of their life cycles? Thanks in advance, G.Arrow |
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North End
Beneath Newington Causeway
Posts: 1,769
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Post by North End on Mar 5, 2018 20:54:06 GMT
The Uxbridge Branch has got a couple weekend closures coming up, following the 23 day blockade of in 2014 plus other closures recently , I can only think of a few examples of untouched sections of track. | Area (for clarity) | Point No(s). | Remarks | | Uxbridge Platforms | 28/29 & 30/31 | Worked on in 2014? | | Access from UXB Sidings to Main | 33/32 & 48/49 | Slip switch on 48/49 to be removed? | | Rayners Lane Junction | 11 & 12 | 13 & 14 (tralling) already replaced | | Rayners Lane Siding | 9/10 |
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Do all points on the SSL's (Sub-Surface Lines) need to be non-airworked to be compatible for resignalling or are they being phased out just as components reach the end of their life cycles? Thanks in advance, G.Arrow No need to get rid of air points, although in the long run LU would love to get rid of the air main for other reasons. What does need to go in preparation for resignalling are loose and spring points. The Jubilee and Northern had few of these, SSR has many more. Whilst they do have certain benefits - simplifying the signalling and having less to go wrong - operationally they can be a liability (as demonstrated in the Hanger Lane Junction near miss incident), and I think I'm right in saying current signalling design rules prohibit them for a resignalling. |
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Post by Dstock7080 on Mar 5, 2018 22:20:13 GMT
The Uxbridge Branch has got a couple weekend closures coming up, following the 23 day blockade of in 2014 plus other closures recently , I can only think of a few examples of untouched sections of track  |
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Deleted
Deleted Member
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Post by Deleted on Mar 6, 2018 2:24:39 GMT
The Uxbridge Branch has got a couple weekend closures coming up, following the 23 day blockade of in 2014 plus other closures recently , I can only think of a few examples of untouched sections of track. | Area (for clarity) | Point No(s). | Remarks | | Uxbridge Platforms | 28/29 & 30/31 | Worked on in 2014? | | Access from UXB Sidings to Main | 33/32 & 48/49 | Slip switch on 48/49 to be removed? | | Rayners Lane Junction | 11 & 12 | 13 & 14 (tralling) already replaced | | Rayners Lane Siding | 9/10 |
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Do all points on the SSL's (Sub-Surface Lines) need to be non-airworked to be compatible for resignalling or are they being phased out just as components reach the end of their life cycles? Thanks in advance, G.Arrow No need to get rid of air points, although in the long run LU would love to get rid of the air main for other reasons. What does need to go in preparation for resignalling are loose and spring points. The Jubilee and Northern had few of these, SSR has many more. Whilst they do have certain benefits - simplifying the signalling and having less to go wrong - operationally they can be a liability (as demonstrated in the Hanger Lane Junction near miss incident), and I think I'm right in saying current signalling design rules prohibit them for a resignalling. Correct all new installations points must be locked and detected |
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Post by goldenarrow on Mar 6, 2018 10:11:46 GMT
It was said before on here that the east facing points at Tower Hill will remain clipped until SMA 3 goes live, will a fixed train stop do the job until then?
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Post by Dstock7080 on Mar 6, 2018 11:19:02 GMT
It was said before on here that the east facing points at Tower Hill will remain clipped until SMA 3 goes live, will a fixed train stop do the job until then? Yes, a fixed trainstop with a new 5mph one are currently in place. |
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Deleted
Deleted Member
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Post by Deleted on Mar 6, 2018 20:21:38 GMT
There will be a lot of air worked points left slowly but surely they will get converted over time but this will take many years
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Post by Dstock7080 on Apr 5, 2018 15:25:29 GMT
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Post by superteacher on Apr 5, 2018 16:13:48 GMT
Where was the logic in removing direct access to the sidings from the westbound?
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rincew1nd
Administrator
Junior Under-wizzard of quiz
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Post by rincew1nd on Apr 5, 2018 16:24:11 GMT
Where was the logic in removing direct access to the sidings from the westbound?  |
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Ben
fotopic... whats that?
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Post by Ben on Apr 5, 2018 17:37:11 GMT
The old hands on FB have all said they'll regret it if Uxbridge platforms get closed for whatever reason. Nothing will be able to get past Ruislip siding. Perhaps in the fullness of time a new slip could be installed to allow direct access once again. Perhaps not though.
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Post by superteacher on Apr 5, 2018 18:44:00 GMT
The old hands on FB have all said they'll regret it if Uxbridge platforms get closed for whatever reason. Nothing will be able to get past Ruislip siding. Perhaps in the fullness of time a new slip could be installed to allow direct access once again. Perhaps not though. If it’s obvious to us, then you would think it would be obvious to so called railway professionals! |
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Post by goldenarrow on Apr 5, 2018 20:18:22 GMT
Does the presence of a rail section gap to the east work against elongating the layout of the slip switch to two conventional points?
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Deleted
Deleted Member
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Post by Deleted on Apr 5, 2018 21:52:38 GMT
Due to disruption on the watford branch this morning, I had to handle extra trains that were diverted at Uxbridge, fortunately I managed to accommodate them by a couple of tweaks (including sending one train entering service directly East out of the sidings, a route which thankfully has been left intact), it really really would have been handy to tip out at Hillingdon and shunt into the sidings, the regularly scheduled trains could run as they were and had their booked reversing times and the extras could be kept in the sidings until they can be sent out to Harrow for 'thier own'
I questioned the wisdom of the removal of 49 points 2 years ago with my manager but what impact would a little fish like me have? I agree the biggest pain will if Uxbridge station is closed (and has happened) the service will no longer be able to reverse in the sidings
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Ben
fotopic... whats that?
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Post by Ben on Apr 6, 2018 8:12:39 GMT
Is it more, or less, straightforward to add in and modify pointwork and signalling with the new system, as opposed to conventional signalling? What ultimately limits control capacity between the control centre and site installations?
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