Deleted
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Post by Deleted on Jan 19, 2018 10:05:58 GMT
Bit of a random one; can anybody tell me what exams etc Underground stock routinely goes through and how often etc?
I know on the mainline you have A exams, B exam, C exam and so on, but I don't know anything about Underground exams. Any info on what exams involve and how often they have to be carried out would be interesting!
Thank you!
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towerman
My status is now now widower
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Post by towerman on Jan 19, 2018 11:56:07 GMT
At the moment I believe all stocks are every 14 days.
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Post by firestorm on Jan 19, 2018 15:07:38 GMT
Bit of a random one; can anybody tell me what exams etc Underground stock routinely goes through and how often etc? I know on the mainline you have A exams, B exam, C exam and so on, but I don't know anything about Underground exams. Any info on what exams involve and how often they have to be carried out would be interesting! Thank you! The S-Stock exams are now based on mileage and there is the following exams: A, B, C, L, R, S, X and Y exams. A, B, C's are done every 25,000km and they cover your basic shoes, brake blocks, gauging, underframe and general inspection, hvac filters and other things like smoke detection, door operation and some other minor testing. L & X exams, every 150,000km and they cover things like gear box oil change, motor greasing, lubrication, various testing of the pneumatic systems and more involved testing and inspection that you wouldn't normally do on an A, B, C exam such as splitting the gangway bellows. R exam, also done at 150,000km is like an interim door exam, where various tests are performed to check the doors are operating within spec and things such as sensitive edge are tested. S exam at 300,000km, R exam plus the mechanical components are lubricated and greased and a more in-depth inspection is done such as door geometry. X exam also at 300,000km, mostly cleaning of ACM/MCM areas, heaters and changing out the filters for air dryer. |
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Post by domh245 on Jan 19, 2018 15:28:12 GMT
Bit of a random one; can anybody tell me what exams etc Underground stock routinely goes through and how often etc? I know on the mainline you have A exams, B exam, C exam and so on, but I don't know anything about Underground exams. Any info on what exams involve and how often they have to be carried out would be interesting! Thank you! The S-Stock exams are now based on mileage and there is the following exams: A, B, C, L, R, S, X and Y exams. A, B, C's are done every 25km and they cover your basic shoes, brake blocks, gauging, underframe and general inspection, hvac filters and other things like smoke detection, door operation and some other minor testing. L & X exams, every 150km and they cover things like gear box oil change, motor greasing, lubrication, various testing of the pneumatic systems and more involved testing and inspection that you wouldn't normally do on an A, B, C exam such as splitting the gangway bellows. R exam, also done at 150km is like an interim door exam, where various tests are performed to check the doors are operating within spec and things such as sensitive edge are tested. S exam at 300km, R exam plus the mechanical components are lubricated and greased and a more in-depth inspection is done such as door geometry. X exam also at 300km, mostly cleaning of ACM/MCM areas, heaters and changing out the filters for air dryer. 000s km surely? |
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Post by countryman on Jan 19, 2018 15:43:41 GMT
The S-Stock exams are now based on mileage and there is the following exams: A, B, C, L, R, S, X and Y exams. A, B, C's are done every 25km and they cover your basic shoes, brake blocks, gauging, underframe and general inspection, hvac filters and other things like smoke detection, door operation and some other minor testing. L & X exams, every 150km and they cover things like gear box oil change, motor greasing, lubrication, various testing of the pneumatic systems and more involved testing and inspection that you wouldn't normally do on an A, B, C exam such as splitting the gangway bellows. R exam, also done at 150km is like an interim door exam, where various tests are performed to check the doors are operating within spec and things such as sensitive edge are tested. S exam at 300km, R exam plus the mechanical components are lubricated and greased and a more in-depth inspection is done such as door geometry. X exam also at 300km, mostly cleaning of ACM/MCM areas, heaters and changing out the filters for air dryer. 000s km surely? I don't think he means 25 kilometres etc, more likely to be 25k miles! |
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rincew1nd
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Post by rincew1nd on Jan 19, 2018 16:12:18 GMT
I don't think he means 25 kilometres etc, more likely to be 25k miles! Took me a few moments, but yes I'm thinking it's thousands of miles not kilometres! |
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Post by firestorm on Jan 19, 2018 16:23:28 GMT
The S-Stock exams are now based on mileage and there is the following exams: A, B, C, L, R, S, X and Y exams. A, B, C's are done every 25km and they cover your basic shoes, brake blocks, gauging, underframe and general inspection, hvac filters and other things like smoke detection, door operation and some other minor testing. L & X exams, every 150km and they cover things like gear box oil change, motor greasing, lubrication, various testing of the pneumatic systems and more involved testing and inspection that you wouldn't normally do on an A, B, C exam such as splitting the gangway bellows. R exam, also done at 150km is like an interim door exam, where various tests are performed to check the doors are operating within spec and things such as sensitive edge are tested. S exam at 300km, R exam plus the mechanical components are lubricated and greased and a more in-depth inspection is done such as door geometry. X exam also at 300km, mostly cleaning of ACM/MCM areas, heaters and changing out the filters for air dryer. 000s km surely? Apologies, has been a long week and corrected. |
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Post by domh245 on Jan 19, 2018 16:53:38 GMT
Apologies, has been a long week and corrected. No worries, it's always interesting to see information about things which we might not usually see. I don't think he means 25 kilometres etc, more likely to be 25k miles! Took me a few moments, but yes I'm thinking it's thousands of miles not kilometres! I had considered that it might have been miles, but then again as far as I'm aware, LU measure all their distances in km, and under resignalling of the Jubilee, Victoria, Northern, and Central lines, all of speeds were redone in km/h, so it'd be odd for a railway that is moving towards metric to stick with imperial measurements for some aspects of operation. |
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Post by johnb2 on Jan 19, 2018 17:17:54 GMT
So, how long does it take for a S8 for example to rack up 25,000km? Also is there a distance recorder on the train or is it done by calculation reckoned against the rostered duties?
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Post by Deleted on Jan 19, 2018 17:31:44 GMT
It has been known for trains already out on the railway to be called into a depot for overdue exams
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Post by Deleted on Jan 19, 2018 18:02:26 GMT
They had mile-o-meters on locos back in the 1960s so S Stock must do with all their computers and so on. All very interesting, how does the S stock compare with other older stocks if anybody knows?
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Post by firestorm on Jan 19, 2018 18:03:29 GMT
So, how long does it take for a S8 for example to rack up 25,000km? Also is there a distance recorder on the train or is it done by calculation reckoned against the rostered duties? The distance is recorded on the train and it reports back every so often. According to the work orders it seems to average every 2 months per A, B and C cycle. It also depends on which path the train is put on, I know they can put it on a "short" path if they need to run the train closer to its mileage before being called in for an exam. |
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Post by firestorm on Jan 20, 2018 10:41:05 GMT
They had mile-o-meters on locos back in the 1960s so S Stock must do with all their computers and so on. All very interesting, how does the S stock compare with other older stocks if anybody knows? Not too sure about older stocks, but the S-Stock has a known wheel size diameter taken from the DM car D axle, this is programmed into the train data recorder (TDR), which is used to calculate the accumulated distance travelled. |
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