TMBA
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Post by TMBA on Sept 7, 2006 12:36:41 GMT
I don't think it will be long before there is a major signal failure on the Richmond branch, as you leave Kew on the east approaching Kew bridge just have a look at the air pipe that supplies our trainstops.
It hasn't been like that very long and i dont think it will be long before it all falls down the embankment, and it's quite a stretch of pipe as well.
Anyone noticed it?
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Deleted
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Post by Deleted on Sept 7, 2006 12:39:06 GMT
havent noticed it ut it will b long before they do anything about it because thier too busy trying to sort, and redecorate stations that are fine.
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towerman
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Post by towerman on Sept 7, 2006 18:29:50 GMT
I thought main line train stops were electric,they are north of Queen's Pk.
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Tom
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Post by Tom on Sept 7, 2006 20:09:17 GMT
Not on the old Southern Region - they use the LU style Trainstop and air main.
The DC lines ones are Electro-Hydraulic.
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Deleted
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Post by Deleted on Sept 7, 2006 21:28:30 GMT
they are going to have the same trouble at earls court if metronet dont pull there finger out, for the drivers just listern as u pass EC4  and see if you can hear anything |
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TMBA
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Post by TMBA on Sept 7, 2006 21:53:06 GMT
Yea I actually reported that last week and it was a lot louder.
Incidental aetearlscourt, the signal between Mansion House and Cannon Street this morning A8** was it just the bulbs at fault?
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Post by c5 on Sept 7, 2006 22:50:29 GMT
they are going to have the same trouble at earls court if metronet dont pull there finger out, for the drivers just listern as u pass EC4 and see if you can hear anything Is that on the Eastbound coming in from West Ken. ? Noticed that tonight too. Must be too busy trying to work out why OP2/3 keeps failing at Edgware Road (for about 4 months now), must be costing Metromess a few bob by now.  Will look it up on the Intranet Cant |
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Deleted
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Post by Deleted on Sept 8, 2006 0:06:57 GMT
You'd think that the bridge bash between Kew and Richmond might remind NR that those air pipes are fairly fragile and may need the occasional bit of maintenance.
Is the air main fed from Chiswick Park substation, or is there a feed from somewhere else?
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Colin
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Post by Colin on Sept 8, 2006 0:40:24 GMT
havent noticed it ut it will b long before they do anything about it because thier too busy trying to sort, and redecorate stations that are fine. Network Rail maintains that section of line - it is not part of the LUL 'PPP' and consequently has no link to station modernisation |
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Deleted
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Post by Deleted on Sept 8, 2006 7:35:42 GMT
yes that signal just had blown bulbs
yes its coming in east from west ken EC4 is the signal to take you into either of the eastbound platforms
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Colin
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Post by Colin on Sept 8, 2006 10:10:14 GMT
Who said anything about cable runs falling off walls? That's a new one.
The track never buckled, the speed limit thing was introduced to mitigate against a possible risk.
Air mains will always leak - I've never known of one that doesn't.
All equipment will fail at some time or other - that's a fact. Metronet's job is to repair failed equipment as soon as possible or maintain it to prevent a failure. Maintenance cost's money; to be efficient Metronet (or who ever) has to do the maintenance at the right time.
Take a signal for example. Obviously we don't want a bulb failure, but we don't want to replace a bulb that still has plenty of life left in it - so when should the maintenance (bulb change) occur?
Now multiply that simple example across all the infrastructure on SSL - that's some job!!
Yes they have made some awful mistakes, but it's not malicious, it's just a bloomin hard job.
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Post by c5 on Sept 8, 2006 15:29:09 GMT
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Colin
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Post by Colin on Sept 8, 2006 19:52:19 GMT
Indeed I remember the loose brackets - a little different to a whole cable run falling down!! ;D ;D ;D ;D |
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Deleted
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Post by Deleted on Sept 8, 2006 21:27:51 GMT
and it was not metronet who installed the brackets at farringdon it was a private contractor they were suppose to use what is called a structual gauge this makes sure nothing will effect the train but this was not done now the only person to blame there would be the SPIC (Site Person In Charge) who has to make sure his area is safe for trains to run.
maintenance is not a easy job dont forget in some places it is difficult to get access i.e sidings require a possession, engineer trains running
this is what the maintenance is for the district line but should be common to all lines as some are a HMRI requirement and some are a LUL requirement
trainstops --------- 8 weeks
points -------------- 6 weeks
track circuits ------ 8 weeks
signals ------------- 8 weeks (done at same time as trainstops)
relay cases / locations ------- 16 weeks (could be 12 weeks )
now trying to get the above equipment maintained with the few staff we do have i think metronet and are signalling managers dont do a bad job to be honest for instance this week on nights there is 1 licensed t/o (aet) on the line i.e me, not everyone can play around with the kit remember
and please remember bulbs can go at anytime it has been known for some to blow straight away (think of your own house bulbs)
sorry to the admins /mods if this sounds like a moan / rant ;D ;D
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Ben
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Post by Ben on Sept 10, 2006 1:00:20 GMT
OT but are we likely to see LED's replacing bulbs in signals on LUL anytime soon? I know some shunt signals have already been done.
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Colin
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Post by Colin on Sept 10, 2006 2:58:42 GMT
Running signals (LED type) have been trialled - i'm not sure if that process is finished yet.
Some shunt signals have been changed to fibre optics - though this mainly as a result of re-signalling or as a SPAD mitigation measure.
I would imagine that we'll see more LED type running signals in the future as lines are re-signalled - though there will actually be a decrease in the number of physical signals as lines are switched over to ATO.
Hopefully Tom or aetearlscourt can tell us more.....
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Deleted
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Post by Deleted on Sept 10, 2006 14:57:21 GMT
there is a trial at the moment with LED tunnel type signal heads as these are being used as platform repeaters at gloucester road
i did hear somewhere but tom will have to agree to this but i hear when network rail started installing them the drivers were moaning (nothing new ;D ;D ;D) that they were too bright especially at night
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Deleted
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Post by Deleted on Sept 10, 2006 15:19:44 GMT
how long does it usually take to fix a bulb failure?
reading 'signal failure' on TfL is pretty generic, and how often does a blown bulb affect the service, will LED lights make that much difference?
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Post by c5 on Sept 10, 2006 16:29:28 GMT
how long does it usually take to fix a bulb failure? reading 'signal failure' on TfL is pretty generic, and how often does a blown bulb affect the service, will LED lights make that much difference? Firstly it will be reported to the Line Controller/Signal Operator (who will put a job out for it to be fixed by the Infraco). A Handsignal Person (LU) will be positioned at the station before to inform Train Operators that signal "Number", "Location" currently has no "Colour" aspect. This will be done for All Stop signals (those that display a red aspect) and usually for a repeater if it has no yellow. Any signal without an aspect is counted as a danger signal. If there is no red aspect, the Train Operator simply waits for a clear signal. If there is no green aspect.... At an automatic signal (ie A765) the Train Operator simply applies "the rule" and drives at caution speed until passing two consecutive stop signals showing clear or caution. Semi-Automatic Signals (ie FE23) are more of a pain in the rear, as the Train Operator will need to get authorisation from the Signal Operator to pass it, this can only be done via a Signal Phone or face-to-face via an Operating Official. If there are a set of points involved, they too will need to be secured. To replace the bulb, a member of suitibly licensed Infraco Signal Department staff, to re-lamp between stations simply rides through on a train (after getting an ok from the Line Controller), then takes the train Control key whilst relamping. Sometimes certain signals can only be relamped during engineering hours or with Traction Current off as ladders may be required or it on certain gantrys. This is not a hard and fast rule, and the state of the service/staff on my depend on what actions are taken |
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Chris M
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Post by Chris M on Sept 10, 2006 19:56:02 GMT
Presumably if it is a station starter then the "Handsignal Person" will be simply stand at the location of the signal and advise drivers accordingly? I guess that these will also be generally easier (and thus quicker) to fix?
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Post by c5 on Sept 10, 2006 20:02:47 GMT
Presumably if it is a station starter then the "Handsignal Person" will be simply stand at the location of the signal and advise drivers accordingly? I guess that these will also be generally easier (and thus quicker) to fix? Spot on Chris, that Handsignal Person will display a red handlamp light or flag until the Train Operator has recieved the information. Not all station starters are easy as they may be close to the edge of the platform and may still need a ladder |
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Deleted
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Post by Deleted on Sept 10, 2006 23:50:32 GMT
correct
but if the 2 bulbs for the junction indicator goes then we have a signal failure as put of the circuit there is a special device what measures the current going through the circuit and in all junction indicators you need 3 filaments alight from 6 (3 bulbs - double filament in each) what would happen in this case is you will see the remaining filaments alight but with a red aspect
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Tom
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Post by Tom on Sept 11, 2006 16:06:33 GMT
Hopefully Tom or aetearlscourt can tell us more..... At the moment, LED Running Signals & Repeaters are approved for use on the JLE and as Tube Tunnel lamp replacements (using the existing signal heads) on the Jubilee Northern and Piccadilly Lines. On BCV and SSL, they can be used for Fixed Red Lights and Platform Repeaters only. |
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Tom
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Post by Tom on Sept 11, 2006 16:07:55 GMT
i did hear somewhere but tom will have to agree to this but i hear when network rail started installing them the drivers were moaning (nothing new ;D ;D ;D) that they were too bright especially at night Doesn't surprise me at all. I was at a Signal Sighting Commitee last week where they had concerns about lowering some signals next to the C2C lines in case the Class 357 headlights blinded the drivers. |
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and see if you can hear anything
Will look it up on the Intranet 
