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#1
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another derailment
"I@n" -uk wrote the following in:
Picadilly between Hammersmith and Barons Court apparently. Details sketchy at the moment. My girlfriend was on a Piccadilly train today. It stopped at Russell Square because the train in front was smoking. At first it was thought that it would be a small delay but eventually the London Fire Brigade had to be called in. She says she could smell the smoke in the tunnel at Russell Square. Any connection between the two events? -- message by Robin May, consumer of liquids Hello. I'm one of those "roaring fascists of the left wing". Hacker is to computer as boy racer is to Ford Escort. |
#2
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another derailment
"Robin May" wrote in message ... My girlfriend was on a Piccadilly train today. It stopped at Russell Square because the train in front was smoking. At first it was thought that it would be a small delay but eventually the London Fire Brigade had to be called in. She says she could smell the smoke in the tunnel at Russell Square. Any connection between the two events? There seems to have been a spate of 'warm' trains recently. Late on Wednesday night I was heading north up the Bakerloo line in a car in which there were three engineers in hi-vi vests, with flashlamps, who had all of the seats cushions off at one end of the car and were periodically inspecting the bogie below. When braking for stations there was an excessive grinding noise from one wheelset and a strong smell of burning. I was quite surprised that they kept the vehicle open to passengers at that time of the night, especially as they were surrounded by standing passengers whilst they were working. I suspect that that would not have been the case if the incident had occurred on a mainline train, where the HSE regulations are observed and implemented more rigorously. |
#3
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another derailment
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#4
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another derailment
I see the Evening Standard's accuracy is at its usual level:
"between Hammersmith and Barons Court stations .... Passengers were being rescued from the tunnel ..." -- Richard J. (to e-mail me, swap uk and yon in address) |
#5
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another derailment
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#6
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another derailment
"According to sources at the crash site the incident was caused by a broken rail, and a member of the rail staff who saw the rail said it was "rusted" before it fractured." Out of curiosity (and I accept there may be a perfectly good answer to this), how can you tell a rail is rusted just by looking at it? Being steel there's always going to be a fair bit of corrosion on the outside, with only the tops being polished clean by passing trains. -- Spyke (Whose own tube tracks are thankfully made out of aluminium!) Address is valid, but messages are treated as junk. The opinions I express do not necessarily reflect those of the educational institution from which I post. |
#7
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another derailment
Spyke wrote the following in:
"According to sources at the crash site the incident was caused by a broken rail, and a member of the rail staff who saw the rail said it was "rusted" before it fractured." Out of curiosity (and I accept there may be a perfectly good answer to this), how can you tell a rail is rusted just by looking at it? Being steel there's always going to be a fair bit of corrosion on the outside, with only the tops being polished clean by passing trains. That's what I was wondering. It sounds a bit like someone saying "the road was rough and covered in some sort of tarmac like material priar to the accident". -- message by Robin May, consumer of liquids Hello. I'm one of those "roaring fascists of the left wing". Hacker is to computer as boy racer is to Ford Escort. |
#8
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another derailment
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#9
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another derailment
Spyke wrote in message ...
"According to sources at the crash site the incident was caused by a broken rail, and a member of the rail staff who saw the rail said it was "rusted" before it fractured." Out of curiosity (and I accept there may be a perfectly good answer to this), how can you tell a rail is rusted just by looking at it? Being steel there's always going to be a fair bit of corrosion on the outside, with only the tops being polished clean by passing trains. Quite right. There's almost always some corrosion on rails (identified by the typical orange colour, normally in the web of the rail). In very unusual circumstances (less than 1 in 1000) pitting from corrosion can lead to a rail defect/break. It takes close inspection by an expert to spot the spot. Rails are tested ultrasonically at regular intervals, and should identify the defect - a small crack in the rail which will eventually grow until it becomes a rail break. It takes quite a while for the crack to grow (months, even years) - testing is every 2 months, to pick up cracks before they become breaks. It is concerning that the break occurred, since the testing regime should have prevented this. |
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