cso
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Post by cso on Apr 16, 2010 8:54:38 GMT
On Wednesday there was a signal failure at Uxbridge in the evening peak period...
On Thursday there was apparently a points and track failure (according to the rather cheery and excellent driver) on my train yesterday...
What's been up over the last few days?
(Here's hoping it's fine tonight so I can get to my destination!)
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Deleted
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Post by Deleted on Apr 16, 2010 10:23:08 GMT
I was on duty Wednesday, although my colleague was dealing with the Uxbridge failure (as I was busy dealing with various problems at Aldgate) but what i gather is that a trainstop in platform 3 was the cause of the problem. A Picc train was outside, with a Met in P3, but the S/Op was unable to normalise 29 points meaning that the Picc ended up being stalled outside! The route was secured and it was brought up behind the Met in P3 and the passengers stepped up and across then detrained. By this time the problem had been partially resolved, so the Picc done a WDM back out to where it originally was stalled, route unsecured and hey presto!
I wasn't on last night, but from what i can gather the problem was yet another trainstop issue (possibly on the same signal) with a trainstop either not going fully up or fully down, one or the other anyway.
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Deleted
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Post by Deleted on Apr 16, 2010 14:21:47 GMT
I hear the signaller that was on at the time of the failure on wednesday is rather a handsome thing! The trainstop issue i think might have emerged later as at the time of the points problem getting resolved there was a fuse that got replced so i thought that was the cause?
In retrospect there is something I could've done to help those travelling Eastbound from Uxbridge (there wasn't a train for around 90 minutes) which was to try and take a train that was reversing from the sidings and run it via P4 as those moves wouldn't have been affected by the points problem?
Anyway it seems i'm cursed this week as this morning i had a failing position detector on the Chesham branch, apologies to all!
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Deleted
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Post by Deleted on Apr 16, 2010 14:29:45 GMT
The problem with the trainstop was causing the fuse to pop. I believe there was a lot of condensation inside the trainstop, causing it to short out and blow the fuse. ;D
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Post by Deleted on Apr 16, 2010 15:02:41 GMT
I see a sypmtom and not the cause!
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Post by peanuts on Apr 16, 2010 23:03:52 GMT
I hear the signaller that was on at the time of the failure on wednesday is rather a handsome thing! The trainstop issue i think might have emerged later as at the time of the points problem getting resolved there was a fuse that got replced so i thought that was the cause? In retrospect there is something I could've done to help those travelling Eastbound from Uxbridge (there wasn't a train for around 90 minutes) which was to try and take a train that was reversing from the sidings and run it via P4 as those moves wouldn't have been affected by the points problem? Anyway it seems i'm cursed this week as this morning i had a failing position detector on the Chesham branch, apologies to all! The 3amp fuse that blew - was indeed caused by the trainstop acting up - and presumably drawing a higher current than normally rated - due to the condensation inside it etc etc etc. The Technical Officer did a great clean-up job which appeared to resolve the issue. I know that this trainstop was scheduled to be changed during engineering hours that night as a result of this problem. |
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Deleted
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Post by Deleted on Apr 17, 2010 8:12:54 GMT
I'm curious why these problems lead to suspensions Uxbridge - Rayners Lane: why not just suspend Uxbridge - Ruislip?
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Deleted
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Post by Deleted on Apr 17, 2010 8:14:35 GMT
Turning around capacity? I'm not very familiar with the area though, so I don't know if that's the case.
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Post by Deleted on Apr 18, 2010 3:02:09 GMT
Turning around capacity? I'm not very familiar with the area though, so I don't know if that's the case. Yep, Rayner's Lane has a centre reversing siding, used by terminating off-peak Piccadilly Line trains, at least according to the Met Driver's Eye Video that I've just watched! I'm In Australia, so even less familiar with the area! |
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Post by ruislip on Apr 18, 2010 3:54:35 GMT
I'm curious why these problems lead to suspensions Uxbridge - Rayners Lane: why not just suspend Uxbridge - Ruislip? The siding past Ruislip is not in the center of the tracks. It is to the south of the westbound Met tracks close to Ruislip depot. A reversing eastbound train would have to cross over the westbound tracks, introducing the potential for further delays. |
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cso
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Post by cso on Apr 18, 2010 20:25:03 GMT
On the Thursday night when it was suspended, it did appear to be suspended from Ruislip; on the Wednesday night it was Hillingdon - Uxbridge according to my SMS update.
This does prompt another question that I'll raise in a another thread, one I've worked out how best to draw the images that are needed to go with it!!
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Post by peanuts on Apr 19, 2010 23:26:43 GMT
The Thursday failure was such that trains could not be reversed via Uxbridge sidings, hence the requirement to fully utilise Ruislip sidings whereas the failure the day before was closer to the platforms - and therefore allowed for trains to enter and exit Uxbridge sidings.
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