Thanks for a full response - far more than I have been able to get out of Southern! Having checked RTT, the overnight use of platform 2 would seem to be slight (nothing regular between about 0130 and 0415), and the possible tiny number of 'ad hoc' trains could be re-routed via platform 1 (which has nothing regular between 0055 and 0520) to give a window of opportunity of nearly four hours on any night to remove the old screen and similar on another night to install the replacement. At least that's how it looks, but I may have overlooked something. Is it really not possible to have the flexibility to use platform 1 for all the overnight movements, bearing in mind platform 3 is available and the through roads can be used for passing movements, thus leaving platform 2 free for a few hours to work (not directed at you, by the way)?
Sorry, this is a very delayed reply!
If a power isolation is now required for those involved in the replacement, I can see why they have not been able to just block / take possession of the Platform 2 line. AIUI the power isolation arrangements are such that you usually need to take the platforms together, some of the Reigate route, and some of the Tonbridge route. The main lines through the station are separate, from what I gather. I'm not normally involved in power isolations during possessions so I may be wrong.
Platforms 1 & 2 may be and indeed have recently been used for both Up and Down movements for overnight passenger services, including a handful of non-stop trains. Generally speaking they can only really have line blocks taken between trains 0200-0400, allowing for the possible late running of 2A04, early presentation of 2A09 past Earlswood North Junction, and a few other movements. Even those are subject to restrictions with Thameslink testing/ECS moves, weedkiller and RHTT services, recent ultrasonic testing train runs and the odd freight run-round path. In fact maintaining the Up lines as open through Redhill has been a slightly contentious issue over the last week or two, with some engineering work having had to take place outside the planning rules and also some rather bitty requirements to allow the ultrasonic testing to take place at awkward hours. As for Platform 3, I'm afraid as it can only be accessed from the North of Redhill or via shunts, it's hard to operate it as a Northbound platform!
This week I note that so far the screen has not been fixed, or at least not if I remember correctly, but there are overnight possessions so this may be the solution. If not I will be very interested as to when this work can actually be done!
I'd also say that if I was the GSM, I would by now have provided a poster or two as to what the problem was and how a resolution was being sought, rather than just leaving it broken for nearly four months with no explanation.
This I agree on. I'm not sure if there's enough poster space to allow for all posters to be displayed in accordance with GTR's new quality auditing standards, but if there is (and I reckon that is probably the case), it would have been a good idea.
The screen further along the same platform in the waiting shelter was also broken for months without explanation and has only recently been repaired, and that is nowhere near the track, being within a room, easily reachable without a ladder and can be carried with one hand. But then, the TOCs do all understand how important good information is, or at least that's what they trot out (Southern included) every time a complaint is made!
I head various explanations about that one, but it was unfortunate. I'm not sure that information about the fault was relayed correctly to those actually needing to arrange the repair, but that's just hearsay and I am not able to say for certain.
Redhill yard and associated connections were signed out of use at 01:00 26/04/16 ready for the alterations.
Talking of the alterations after looking at a copy of the scheme plans it looks like we are also losing the GPO dock and the switch, which were definitely not mentioned at the meeting with the sponsor and the design team.
Loss of the GPO [Post Office] Dock has been in the very small print of notices issued to some passenger TOC staff for a not inconsiderable time. Probably in the region of a month or more. It's odd that you haven't heard about it!
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I suspect it is to remove an asset that costs money to maintain (2/3 points and signalling as well as the track and embankment). Hope they find somewhere for the 455 to stable overnight.
If needs must, the 455 could theoretically be stabled in Platform 1, but I'm wondering if it could be allocated to any of the Up Tonbridge Sidings. Not sure on that one, as those are already extensively used overnight.
The "GPO" bridge may become important with the southern "Bay" location being platform 1 rather than Platform 0. There is significant local concern that the subway could be dangerous in certain situations due to overcrowding (i.e. during last minute platform changes) and it was surprising to hear that GTR have significant reservations about the layout as well.
I wouldn't be surprised if the space taken by the bridge is being looked at, but for a replacement bridge at some point. The problem is that I somehow doubt that bridge is suitable for numerous passengers running through it to get their connections - I've not been in it, but I should imagine it would require extensive access works, lighting installations and refurbishment, as well as structural assessments. Also, it would not span across to Platform 0, which means you would have an awkward flow of passengers who had taken the wrong route to said platform, running down the Platforms 1/2 island to get to the subway. Gatwick Airport has an equally awkward situation with Platform 7 only being able to be accessed from one of two bridges, and nobody in their right mind wants a repeat of that!
Indeed - the subway is already pretty dire, with the bottle-neck dog-leg staircase from platform 3, the disused ramp by the foot of the stairs, then the local management's apparent complicity in having a coffee stall advertising 'A' board standing right by the foot of the stairs to platforms 1 and 2, along with the train information screen at the same point, simply inviting people to congregate at the foot of the stairs (I find it incredible that the local station management seem to be content to run the place like this!).
The crush of people trying to get across to make connections with, for example, GWR trains is currently severe at times, not to mention incredibly annoying when it leads to a missed connection.
I've always wondered about this. As I've been typing this post, I have wondered if some of the space to the back of Platform 3 could be used to create a better set of stairs down into the subway, or maybe some sort of ramp down into the subway could be created. Perhaps the real secret could be in getting the NDL to 3tph, increasing the number of connections meaning people are less concerned about missing them, thus reducing people running for one of just two irregularly-spaced trains per hour.
I do think it's hard to position a screen in the subway to make sure it is easily visible, sufficiently detailed and usable for most cross-platform connections. I'd rather leave it to those more expert than I am to decide where to put it!