Deleted
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Post by Deleted on Jan 11, 2017 13:57:45 GMT
There was a ssr signal failure this morning afleeting circle and h+C lines. I was at baker street (coming from the met) at around 8 or 8 10 am. I saw the board saying severe delays etc, but the Wb train to hammersmith was as normal. I have noticed this before on the circle/ h+c. How come? If you are boarding as soon as delays are announced, there is no issue, normally trains will arrive overcrowded. Why was great portland st closed?
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Post by MoreToJack on Jan 11, 2017 15:30:36 GMT
Station was short of required minimum numbers to open. Numbers acquired at 0623, but that member of staff had to sssist with the signal failure. Station closed 0739. Station reopened 0810 when early turn staff booked on.
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Post by Deleted on Jan 11, 2017 15:46:29 GMT
Lever failure due to timing relay failure
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class411
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Post by class411 on Jan 11, 2017 17:03:25 GMT
Are the signal failures we see nowadays still dues to lack of investment in years gone by, or is it just a normal failure rate for one hell of a lot of signalling equipment, a great deal of which operates in a somewhat hostile environment?
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Post by superteacher on Jan 11, 2017 19:55:06 GMT
Are the signal failures we see nowadays still dues to lack of investment in years gone by, or is it just a normal failure rate for one hell of a lot of signalling equipment, a great deal of which operates in a somewhat hostile environment? Old equipment! |
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Post by Deleted on Jan 11, 2017 19:55:51 GMT
sorry to hear about the lack of station staff causing a station to close. Yes I am interested to know 'class 411'.... From what I understand is that the older SSR Signalling is unreliable - we'll have to wait for the 'four lines upgrade'. Saying that a number of signal failures are caused by short-circuits (e.g. rubbish, heavy rain etc).
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Tom
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Signalfel?
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Post by Tom on Jan 11, 2017 20:01:32 GMT
Are the signal failures we see nowadays still dues to lack of investment in years gone by, or is it just a normal failure rate for one hell of a lot of signalling equipment, a great deal of which operates in a somewhat hostile environment? Old equipment! Not really, said piece of equipment is relatively new in signalling terms. They are somewhat temperamental, but necessary in this location due to the range of settings they have. |
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Post by Deleted on Jan 11, 2017 20:58:58 GMT
There is better ways to cause a time delay and also it doesn't help when relays are checking relays and checking relays
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Deleted
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Post by Deleted on Jan 11, 2017 20:59:29 GMT
sorry to hear about the lack of station staff causing a station to close. Yes I am interested to know 'class 411'.... From what I understand is that the older SSR Signalling is unreliable - we'll have to wait for the 'four lines upgrade'. Saying that a number of signal failures are caused by short-circuits (e.g. rubbish, heavy rain etc). Not true |
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Deleted
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Post by Deleted on Jan 11, 2017 21:01:57 GMT
Are the signal failures we see nowadays still dues to lack of investment in years gone by, or is it just a normal failure rate for one hell of a lot of signalling equipment, a great deal of which operates in a somewhat hostile environment? There is nothing wrong with the older signalling we have had a lot of failures in which relays and train stops don't last too long since being in the overhaul shops at the REW |
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Tom
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Signalfel?
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Post by Tom on Jan 13, 2017 7:49:24 GMT
There is better ways to cause a time delay and also it doesn't help when relays are checking relays and checking relays Quite - what was quite a simple site got very complicated with all those timing sections and extra overlaps. I remember the first site test following the mods and people struggled with it a lot! Very clever, mind. The real advantage of those timers is their ability to be set to anything from 1.5 sec to 240 (I think) sec, much better than the stuff which you can only get in certain set timings. |
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Deleted
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Post by Deleted on Jan 13, 2017 17:52:59 GMT
Are the signal failures we see nowadays still dues to lack of investment in years gone by, or is it just a normal failure rate for one hell of a lot of signalling equipment, a great deal of which operates in a somewhat hostile environment? There is nothing wrong with the older signalling we have had a lot of failures in which relays and train stops don't last too long since being in the overhaul shops at the REW I wonder what causes this. Would it be a lack of training, or not working to as high a tolerance? |
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Post by Deleted on Jan 13, 2017 18:52:03 GMT
change in process , cheaper component parts
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