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Old October 14th 05, 05:12 PM posted to uk.transport.london
J Lynch J Lynch is offline
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First recorded activity at LondonBanter: Feb 2004
Posts: 16
Default Northern line trip failures = lots of SPADs


"Clive" wrote in message
...
In message , J Lynch
writes
A "tripcock tester" only tests that there is a tripcock arm present and in
correct alignment (at which point the tripcock tester light goes out). It
does NOT check that the tripcock will stop the train if activated, the
assumption being that if it is in the right place and alignment that it
will do the job it is provided for, if required.

I appreciate that, it's a pity that tripcocks no longer dump the trainline
to atmosphere as they used to, at least that was fool proof.
--

While Westcode fitted stock has no trainline supply, does this not still
apply to the Westinghouse stock still in service - i.e. surface stock
A60/62, C69/77 and 1972 tube stock?