Handover assurance for the Elizabeth Line

Handover assurance for the Elizabeth Line


Crossrail is a complex programme and to hand it
over successfully we need to break it down into component parts. There will be
a number of elements we hand over. There will be shafts, there’ll be portals, there’ll
be stations and they’ll be routeway systems and these will be individually
handed over. Within each of these elements there’ll will be signalling,
telecoms, civils, mechanical, electrical components that make up
that element that we will hand over to the operator and maintainer. Delivery
assurance is all about making sure that what we deliver is safe, reliable,
performs and is operable and maintainable. The railway industry is
actually assured similar to how the nuclear industry or the aviation
industry is so to much higher standards than would a normal construction project.
We have to comply with London Underground and Network Rail standards
we also have to comply with the railway and other guided transport systems
regulations and also we have to convince the ORR (the Office of Rail & Road)
regulator that we are ready to safely operate and maintain this railway. To
assure that railway you’ve got millions of documents at the bottom that flow up
and feed into that one document that unlocks it that we use to justify every
step of the way that the railway is safe, reliable and operable and maintainable
to the operator and maintainer. One of the examples of how the assurance
evidence can be as problematic as the actual design and installation of the
works would be in our LED lighting within some of our stations. We made a
decision early, very early on in the Crossrail design phase that we would be
using LED lighting throughout and not using what was rapidly becoming obsolete
fluorescent fittings. The problem posed by that was there was very little
testing or assurance or life cycle information available about LED fittings
because they were all very new. To get them approved for use on the station
involved subjecting them to very rigorous electrical testing, EMC testing, fire
survival testing, smoke emissions, toxicity testing and producing
all of the various certificates, videos, reports that substantiate the results of
those tests. That in itself can take quite a long time, meanwhile the light
fitting is already manufactured, maybe ready to be installed and therefore we
have the situation where the thing that’s actually stopping completion of
that piece of work is the assurance activity not the installation activity.
Part of that process is producing operations and maintenance manuals which
takes time. It’s all well and good installing all these assets but you’ve
got to be able to safely operate and maintain them and we’ve got to be able
to train and communicate the operations and maintenance processes to the
maintainer and the operator so they know how to use it, not just now but in
10, 20, 30 years time. So all the hard work we are doing right now in terms of
assurance and handover will go on to help future railways in their delivery.
So we are breaking new ground here. This will be the first wholly digital railway
in the UK

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