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Journey by Journey => London to Kennet Valley => Topic started by: paul7575 on August 28, 2018, 19:40:13



Title: Bedwyn Turnback extension for IET
Post by: paul7575 on August 28, 2018, 19:40:13
Is apparently happening during this working week.  10 metres needed, hence the footpath being diverted to suit.

Paul



Title: Re: Bedwyn Turnback extension for IET
Post by: bobm on August 28, 2018, 21:20:09
Map of the diversion from Wiltshire Council.

http://php.wiltshire.gov.uk/row/ppo/2018-02.pdf (http://php.wiltshire.gov.uk/row/ppo/2018-02.pdf)


Title: Re: Bedwyn Turnback extension for IET
Post by: Thatcham Crossing on August 28, 2018, 21:21:07
Details in the attached that was sent by NR to local residents.


Title: Re: Bedwyn Turnback extension for IET
Post by: grahame on August 28, 2018, 21:35:31
Is apparently happening during this working week.  10 metres needed, hence the footpath being diverted to suit.

Paul



It will be ... kinda strange ... to see 5 car IETs turning at Bedwyn.   And that's 3 more 166s headed west  :D


Title: Re: Bedwyn Turnback extension for IET
Post by: Thatcham Crossing on August 29, 2018, 07:57:14
Quote
And that's 3 more 166s headed west  :D

Or maybe not, as the letter I attached also contained this little snippet....

Quote
At peak times, to supplement the through service, there will be existing diesel trains operating to Newbury alongside the new IETs.

I posted similarly over on the RailUK Forum, and was advised that....

Quote
There is an evening Newbury - Bedwyn shuttle in the peaks, that will still be Turbo worked for the time being; although 769s likely in the future.

From what I am reading elsewhere, the 769 project is in trouble, so that could be a while.


Title: Re: Bedwyn Turnback extension for IET
Post by: grahame on August 29, 2018, 08:04:17
Quote
And that's 3 more 166s headed west  :D

Or maybe not, as the letter I attached also contained this little snippet....

Quote
At peak times, to supplement the through service, there will be existing diesel trains operating to Newbury alongside the new IETs.

I posted similarly over on the RailUK Forum, and was advised that....

Quote
There is an evening Newbury - Bedwyn shuttle in the peaks, that will still be Turbo worked for the time being; although 769s likely in the future.

From what I am reading elsewhere, the 769 project is in trouble, so that could be a while.

Quote
At peak times, to supplement the through service, there will be existing diesel trains operating to Newbury alongside the new IETs.

Ah - perhaps just two more headed out West - or will the shuttle unit originate from the Westbury end?  ;)


Title: Re: Bedwyn Turnback extension for IET
Post by: Thatcham Crossing on August 31, 2018, 16:40:51
Link to pics on NR Western Region twitter of Claire Perry (local MP) inspecting the completed turnback siding at Bedwyn this morning.

https://twitter.com/networkrailwest/status/1035460431534583808?s=09 (https://twitter.com/networkrailwest/status/1035460431534583808?s=09)


Title: Re: Bedwyn Turnback extension for IET
Post by: grahame on September 07, 2018, 12:11:56
Operational questions for the extended turn back siding and change to class 80x trains on the Bedwyns

1. Will all drivers need route learning training for the new arrangements, and if so how much

2. Will the 80x trains be running out to Bedwyn, Driver Only Operation, or will they require a member of staff / customer facing within the passenger compartment and passenger / train safety trained?

3. If the answer to (2) is that there is no such requirement as it's a DOO route already, is the ability to single crew to Bedwyn, but a requirement for a second person if the service carries on to Westbury, one of the key considerations in not extending the services to the Wiltshire Hub?


Title: Re: Bedwyn Turnback extension for IET
Post by: IndustryInsider on September 07, 2018, 13:42:40
1) Just a circular on the notice boards will probably suffice.

2) DOO on existing routes, so yes.

3) As a result of 2, no extension to Westbury unless TM on board.


Title: Re: Bedwyn Turnback extension for IET
Post by: RA on September 07, 2018, 20:45:17
There is a pool of guards at Westbury who have route knowledge to Bedwyn and Newbury, although they don't have traction knowledge for class 80x units. Glastonbury additional services formed of Turbo stock required them. They also came in handy when the Reading blockades were on and the Westbury to Theale/Reading services were operated with Turbo units.


Title: Re: Bedwyn Turnback extension for IET
Post by: bobm on September 07, 2018, 20:48:11
How long does route knowledge last?  Is there the ability for them to keep it up with the current diagrams?


Title: Re: Bedwyn Turnback extension for IET
Post by: Thatcham Crossing on September 07, 2018, 20:55:23
Some pics I took earlier in the week of the extended turnback and new crossing....

Looking west from Bedwyn overbridge
https://flic.kr/p/29LdgXu (https://flic.kr/p/29LdgXu)

A 2-car 165 parked, showing the space remaining
https://flic.kr/p/29tjHEn (https://flic.kr/p/29tjHEn)

The new crossing, about 10m west of the previous
https://flic.kr/p/2aMfFo7 (https://flic.kr/p/2aMfFo7)

5-car stop sign on the left.
https://flic.kr/p/M6DU3R (https://flic.kr/p/M6DU3R)

Siding appears to have been re-laid canted to the left (from this end), presumably to improve the pedestrian view of the track when a train is present
https://flic.kr/p/2aMfFMy (https://flic.kr/p/2aMfFMy)

Neat and safe
https://flic.kr/p/29tjJ5v (https://flic.kr/p/29tjJ5v)

Feeling a bit of a luddite as I can't work out how to embed :-(


Title: Re: Bedwyn Turnback extension for IET
Post by: bobm on September 07, 2018, 21:34:59
Excellent photos.  I was thinking of heading out that way next week to capture some shots for the forum. No need to bother now!


Title: Re: Bedwyn Turnback extension for IET
Post by: IndustryInsider on September 07, 2018, 23:39:21
How long does route knowledge last?  Is there the ability for them to keep it up with the current diagrams?

The generally accepted time for route knowledge retention is six months.


Title: Re: Bedwyn Turnback extension for IET
Post by: Adelante_CCT on September 11, 2018, 19:25:13
Excellent photos.  I was thinking of heading out that way next week to capture some shots for the forum. No need to bother now!

Maybe not, but you could head that way tomorrow to photo what could be the first class 800 to test it?

http://www.realtimetrains.co.uk/train/V10269/2018/09/12/advanced


Title: Re: Bedwyn Turnback extension for IET
Post by: bobm on September 12, 2018, 19:45:17
Maybe not, but you could head that way tomorrow to photo what could be the first class 800 to test it?

Your wish is my command...

(http://www.mbob.co.uk/rforum/bdw1.jpg)

(http://www.mbob.co.uk/rforum/bdw3.jpg)

(http://www.mbob.co.uk/rforum/bdw2.jpg)

(http://www.mbob.co.uk/rforum/bdw4.jpg)


Title: Re: Bedwyn Turnback extension for IET
Post by: SandTEngineer on September 12, 2018, 19:51:28
Bob, I love your last photograph showing the cows taking an interest in their new train.... :D ::)


Title: Re: Bedwyn Turnback extension for IET
Post by: bobm on September 12, 2018, 19:54:11
There is a story there.   Once cow decided she wanted to stand by the kissing gate on the foot crossing which made it difficult for anyone to get past and use the crossing.  Eventually it was decided she was friendly enough and we pushed/squeezed past.


Title: Re: Bedwyn Turnback extension for IET
Post by: JayMac on September 12, 2018, 20:24:53
Ermintrude and Buttercup don't actually look that impressed.


Title: Re: Bedwyn Turnback extension for IET
Post by: Thatcham Crossing on September 12, 2018, 22:55:18
Quote
Ermintrude and Buttercup don't actually look that impressed.

Some of them (not all girls) were a bit frisky when I was there last week, so I decided to walk back to the Station via the towpath!

Thanks to bobm for showing us that an IET does fill the siding.


Title: Re: Bedwyn Turnback extension for IET
Post by: eightf48544 on September 13, 2018, 09:14:02
Is there TPWS fitted to the siding?


Title: Re: Bedwyn Turnback extension for IET
Post by: Timmer on September 13, 2018, 09:18:12
Ermintrude and Buttercup don't actually look that impressed.
They must have been speaking to Broadgage  ;D


Title: Re: Bedwyn Turnback extension for IET
Post by: bobm on September 13, 2018, 09:21:38
Is there TPWS fitted to the siding?

I think not - but there is a handy set of catch points.

(http://www.mbob.co.uk/rforum/bdw6.jpg)


Title: Re: Bedwyn Turnback extension for IET
Post by: grahame on September 13, 2018, 09:30:59
Is there TPWS fitted to the siding?

On a technical note ... would it even be possible?   I always thought of TPWS being on the approach to a signal and for a 5 car 80x there's no such thing as approaching this signal ... now of course if you had a 769 in there ...


Title: Re: Bedwyn Turnback extension for IET
Post by: IndustryInsider on September 13, 2018, 10:02:54
You could fit TPWS over speed sensors for the buffer stops, and a stop sensor at the ground position signal.  The catch points stop a collision taking place with another train which is the most serious risk.


Title: Re: Bedwyn Turnback extension for IET
Post by: eightf48544 on September 13, 2018, 10:12:43
I was thinking of the TPWS fitted at terminal stations like Paddington to stop trains approaching the buffer stops too fast.


Title: Re: Bedwyn Turnback extension for IET
Post by: bobm on September 13, 2018, 10:13:04
The catch points stop a collision taking place with another train which is the most serious risk.

Although from a report into a separate incident - https://assets.publishing.service.gov.uk/media/547c9057ed915d4c0d0001ab/R012007_070123_Brentingby.pdf (https://assets.publishing.service.gov.uk/media/547c9057ed915d4c0d0001ab/R012007_070123_Brentingby.pdf) - they were modified.

Quote
A derailment at trap points occurred at Bedwyn on 13 October 2001 when a train started  from the turnback siding and passed signal R475 at danger.  

The train ended up obstructing the adjacent Up Main line.  The derailed train broke off the track circuit interrupter, and this caused signal R839 that had been cleared for train 1A27 from Penzance to Paddington approaching on the Up Main line to revert to danger.    The driver of train 1A27 saw the change in signal aspect in time, applied the emergency brake and stopped about 1400 m from the derailed train.  

Recommendations  included the possible modification to the trap points to ensure derailed vehicles would  not continue towards the Up Main line and risk assessment of all similar locations with one of the factors to be taken account being trapping protection which was not a full turnout.   


Title: Re: Bedwyn Turnback extension for IET
Post by: IndustryInsider on September 13, 2018, 10:45:05
Yes, I remember that incident.  A serious one, but rather overshadowed by the number of fatal crashes that occurred around the same time.


Title: Re: Bedwyn Turnback extension for IET
Post by: bobm on September 13, 2018, 10:51:15
Yes for all its other ills, the railway is a safer place these days.


Title: Re: Bedwyn Turnback extension for IET
Post by: SandTEngineer on September 13, 2018, 11:42:55
The TPWS fitment standards do not require sidings such as at Bedwyn to be fitted.  I note from Bobs photograhs that they have fitted a STOP (S) marker sign just short of the buffer stop.  There is a lot of debate elsewhere about the sighting of these from the IET cab, so I hope there is a bit of length tolerance in the siding..... ::)


Title: Re: Bedwyn Turnback extension for IET
Post by: bobm on September 13, 2018, 11:48:09
Two and three car Turbos are also required to run up to the stop sign, the existing two and three car stop signs have been removed.  (Well the posts remain but the plates have been taken down.)


Title: Re: Bedwyn Turnback extension for IET
Post by: paul7575 on September 13, 2018, 13:41:49
The TPWS fitment standards do not require sidings such as at Bedwyn to be fitted.  I note from Bobs photograhs that they have fitted a STOP (S) marker sign just short of the buffer stop.  There is a lot of debate elsewhere about the sighting of these from the IET cab, so I hope there is a bit of length tolerance in the siding..... ::)
How about the old tennis ball on a string trick?  Always worked in my garage...

Paul


Title: Re: Bedwyn Turnback extension for IET
Post by: 317361 on September 14, 2018, 06:41:17
Can anyone tell/does anyone know whether point heaters have been fitted to the points and turnback at Bedwyn. The lack of them was apparently the reason why all Bedwyns were cancelled when it was cold in March, due to worries over possibly blocking the main line. Hence canncellations in no snow. NR Sid they were going to.


Title: Re: Bedwyn Turnback extension for IET
Post by: SandTEngineer on September 14, 2018, 08:14:56
Can anyone tell/does anyone know whether point heaters have been fitted to the points and turnback at Bedwyn. The lack of them was apparently the reason why all Bedwyns were cancelled when it was cold in March, due to worries over possibly blocking the main line. Hence canncellations in no snow. NR Sid they were going to.

Can't see any fitted in the photographs Bobm posted earlier in the topic.


Title: Re: Bedwyn Turnback extension for IET
Post by: 317361 on September 14, 2018, 11:03:39
Triffic, thanks...


Title: Re: Bedwyn Turnback extension for IET
Post by: IndustryInsider on September 14, 2018, 11:08:24
I guess that would be part of a separate renewal project of the S&C?  Or is it relatively straightforward to fit point heaters to existing equipment?


Title: Re: Bedwyn Turnback extension for IET
Post by: SandTEngineer on September 14, 2018, 17:39:21
I guess that would be part of a separate renewal project of the S&C?  Or is it relatively straightforward to fit point heaters to existing equipment?

Modern electric heaters consist of strips that are clipped to the outside rail foot, so fairly easy to retrofit.  However, the biggest issue is usually getting a power supply to site (especially in a remote site).  They can't be fed from the signalling power supply (just in case anybody thought of asking ☺).


Title: Re: Bedwyn Turnback extension for IET
Post by: bobm on September 14, 2018, 17:46:16
There is a large building between the end of the up platform and the bridge which looks to be a relay room, so suspect there is power within 300 yards.


Title: Re: Bedwyn Turnback extension for IET
Post by: SandTEngineer on September 14, 2018, 17:57:32
There is a large building between the end of the up platform and the bridge which looks to be a relay room, so suspect there is power within 300 yards.
Doh....forgot about the relay room (its an age thing you know).  That would be OK provided the DNO Supply point has the required spare capacity.


Title: Re: Bedwyn Turnback extension for IET
Post by: bobm on September 14, 2018, 18:08:10
Just unplug the PWay's kettle.  ;D


Title: Re: Bedwyn Turnback extension for IET
Post by: SandTEngineer on September 15, 2018, 10:34:39
Just unplug the PWay's kettle.  ;D

Bob, surely that should be the S&T kettle..... :P ::)


Title: Re: Bedwyn Turnback extension for IET
Post by: bobm on September 15, 2018, 10:36:01
Just unplug the PWay's kettle.  ;D
Bob, surely that should be the S&T kettle..... :P ::)

You think I am going to make a joke about S&T to a former member of the department?  ;D


Title: Re: Bedwyn Turnback extension for IET
Post by: grahame on September 15, 2018, 21:24:31
I saw this "kettle" stuff around and my mind turned to the idea of running a steam hauled push pull service in winter out to Bedwyn, using steam from the engine to blow the snow out of the points ... my mind comes up with some silly ideas on a Saturday night!


Title: Re: Bedwyn Turnback extension for IET
Post by: bobm on September 15, 2018, 22:00:29
My Saturday evening has been ruined by the news Dominos no longer do the Double Decadence base option for their pizzas!



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