The original (1940) stock on the W&C did contain asbestos. This is why only one car was preserved. IIRC some private individuals sought to obtain some of the cars but it would have been very expensive to remove the asbestos. In other stock there was some asbestos that has to be removed such as the preserved 'Q' stock and this is one of the reasons why the 'standard' T/S restoration is delayed until sufficient funds are available for such work to be done.
Post by tubeoperator92 on May 4, 2011 18:02:32 GMT
Undoubtedly, some of the older stocks would have contained asbestos in one way or another, either as insulation, or wire coating. Most probably, it would have been removed during the stock refurbishment program which started in the early 1990's.
Asbestos was so widely used in the 60s and 70s that I would be very surprised if the older stocks did not contain it in some form or other. I have no idea if they currently contain any asbestos but sometimes these things are best left alone! Heat resistant cable was often asbestos covered, ceramic fuse holders often had asbestos pads in them, gaskets can contain it... and the list goes on and on. One thing that is certain is that any remaining asbestos would not be left in a way that it poses a hazard to the public!
Slightly O/T, but this reminds me of an asbestos removal job that was done at work. It was decided that the ceramic fuse holders in an remote and obscure fuseboard contained asbestos arc pads which could pose a hazard if somebody had to change a fuse.
It took the electricians a good hour to identify where the board was fed from and isolate it (obviously having to open the board and check it was dead). Then comes the asbestos contractor who seals the room, removes the offending part, cleans out fuse board and does an air check. ...job done! Only slight issue is that the board wasn't used as it had no circuits connected to it!
Post by railtechnician on May 4, 2011 20:40:34 GMT
I think that some of the Central Line stock carried more than the average amount of asbestos i.e. more than brake shoes and electrical cable or fittings. I understand that behind the seats the cars were lined with asbestos sheet.
Asbestos was used throughout London Underground and although there may be none in extant rolling stock there is still plenty to be found throughout the system. Where it is found and reported it is usually sealed and monitored where it is unlikely to be disturbed, elsewhere it is removed. LUL has specialist units to deal with the recording, sealing and/or removal and monitoring of asbestos. Most of the places that I worked contained asbestos in one form or another, one has to remember that it was used in all manner of things and in several forms. Perhaps the most well known are flat sheet found in many trackside relay cases and relay rooms, corrugated sheet used in roofing, brake linings (white or brown), tunnel linings (blue), tunnel anti noise baffles (white), cable troughing (white), floor and wall tiles, pipe lagging, signal cable sheathing mostly on the Victoria line but also on the Picc west end from Acton Town, stage 1 Jubilee line and at various sites on most tube lines for such things as misc comms, sumps and pumps. Asbestos cabling was still being installed as late as the 1980s. Of course such things as fire blankets were originally made predominantly of woven asbestos and wall plugs (for screws) were asbestos fibre, toaster elements were wound on asbestos pads and it was always to be found in LT/LU messrooms and canteens in one form or another as well as office complexes and equipment rooms.
Compared to 30 years ago the risk from asbestos is much reduced but no-one can say that it has been eliminated and it won't be for decades to come. Having said that I expect that most customers are far more at risk from the illegal and very dangerous fly tipping of asbestos that is a daily event up and down the country!
Having said that I expect that most customers are far more at risk from the illegal and very dangerous fly tipping of asbestos that is a daily event up and down the country!
Spot on although the brake shoe business is the most concerning. As I understand it, asbestos is OK unless drilled, filed, sanded or otherwise disturbed. If the brake shoes on old stock were that dodgy wouldn't that make the tunnels and underground stations a potential hazzard even now?
when you said the central line trains use asbestos do you mean the 1962 or the 1992 stock?
62 stock, my understanding is that it was not the whole fleet but one batch that contained more than the average amount of asbestos although I have no details. I'm wondering if it may have been the LNER trains, yes some of the Central tube stock actually belonged to the LNER and were identified as such on the chassis!
Always a company man, very much a lurker now as I slowly fade away.
Asbestos was used for most car and lorry brake and clutch pads so it is not surprising that it was used in railway brakes.
From my motorcycling activities,I know that asbestos was phased out of (new) brake pads in the early 90s,though there would have been reserve stocks for some years after.Asbestos in gaskets lasted a while longer,but I think now has been replaced.
Was there not a Union campaign in the 70s to clean up tunnel-dust on the Tube? Due to its asbestos content? I certainly remember the tunnels in the Golders Green area being closed to remove blue asbestos sound-proofing....
Asbestos is found all over the place,and in the most unlikely places....a friend was advised to leave the Artex ceiling of his stairway at home well alone,as the textured finish was achieved using asbestos....
The problem is,asbestos is a miracle material...lightweight,strong,fire-resistant,versatile and not too expensive....only problem is,it causes mesothelioma....
A friend in design says that this is true of carbon nanotubes aswell, he waxed lyrical on how lucky it was it hadn't entered the market more.
Some of the 62ts was 'owned' by the LNER? 38ts were, 62ts doesnt seem right though? Why would trains built in the late 50s be 'owned' by a company that ceased to exist in the late 40s? Would have been the Eastern Region by then...