On 21/09/10 20:57, Paul Scott wrote:


"Roy Badami" wrote in message
...
On 21/09/10 16:54, Paul Scott wrote:

Also the Plaistow signalling irregularity, which was quickly found to
have been caused by 'a defective component'.

ITYM 'an incorrect component'

Thanks - sorry about that - probably thinking of the previous
discussions as I wrote it...

In many ways an incorrect component is rather less disturbing than a
defective component, as the latter would indicate a wrong side failure.
Obviously incorrect installation or maintenance is still a concern,
but at least we now have a better idea as to the underlying cause.

Also, in that context, the comment about checking that similar
components are not present at other sites makes more sense.

-roy