WORKSHOPS, DEPOTS & LIFTING EQUIPMENT
Piling work underway at Crossrail’s eco-friendly Old Oak Common depot
Work is well underway to design and construct Crossrail’s new eight-track depot for its Bombardier-built train fl eet at Old Oak Common (OOC), with piling starting as RTM went to press. Senior project manager James Mendis spoke to David Stevenson.
B
ombardier Transportation UK Ltd awarded Taylor Woodrow the £142m contract to construct the new Old Oak Common (OOC) Crossrail depot, which will house 33 trains, in June 2014. The depot will be operational by May 2018.
Iain Gascoine, Bombardier’s project director Construction UK, took possession of the former GWR locomotive and carriage servicing depot at OOC – situated at Acton in West London.
establishment for the duration of the four- year project, completed the demolition of the Pullman-sheds, and have cleared buried services underground.
James Mendis, senior project manager at Taylor Woodrow (the civil engineering division project, added that the team is now embarking on detailed designs for the facility and piling work at the site starting. “The week beginning 12 January we start piling,” said Mendis, “and there are approximately 250 piles to go into the ground for the building. We aim to have this complete by May.”
The sequence of construction, he added, will be piling, followed by pile caps and drainage, followed by steel frame erection, cladding construction of the pits. In parallel with these works the drainage to the main site will be installed along with the connection to the main line and stabling sidings and the associated signalling and OLE works for the depot.
Eco-depot
it had signed a contract with Bombardier for the delivery of rolling stock and the new depot for Crossrail. The 65 new Class 345 nine-car EMUs will be manufactured and assembled at to be delivered in May 2017.
But as part of the 32-year maintenance contract, which includes an option to purchase 18 additional trains, there was an obligation to
To achieve this, energy at the OOC depot will be generated and stored using a hybrid Ground source heat pumps will control heating and cooling, originating from a combined heat
Gascoine told us: “This was something we worked with Crossrail on, and we had an obligation to get a BREEAM rating of ‘good’. using the new technology, we aim to achieve ratings of ‘very good’ to ‘excellent’.
“We will also be able to reduce our power requirements by one megawatt per year as a the 32-year period of maintaining the trains.
the solar power. That’s also coupled with requirement to achieve a 20% reduction in power requirements in real-terms – we are now looking at achieving 30%.”
With regards to the ground source heat pumps, Mendis noted that as part of the construction the piles are to have geothermal loops installed.
“In addition to that we have got approximately 50 boreholes, which are 150m deep and about 150mm in diameter, going into the ground. They have thermal loops in them as well,” he said. “This will be used to heat and cool the building.”
Demolition There have
is not a rail site at the moment, with no live track in and out, work has progressed without problems.
“The site won’t become a live railway until 2017-18 when we start to electrify and power- up the overhead lines and get the test trains running,” said Gascoine.
We have made good progress on the demolition and that’s mainly where we could have hit problems, but so far we haven’t.”
Mendis added that because Taylor Woodrow and Bombardier are co-located it has made it easier to rectify any on-site issues if and when they have occurred.
Depot’s long-term legacy
The construction of the maintenance depot at OOC is expected to support 244 jobs, plus 16 apprenticeships. And when fully operational the depot will support 80 jobs to maintain the
Taylor Woodrow and its supply chain partners would take on 13 apprentices. Bombardier has
“We have an obligation under the contract with Crossrail to apply responsible procurement, which is recruiting from the local environment,” explained Gascoine. “That has a big impact on Bombardier, more than Taylor Woodrow, because we have to run the maintenance depot, so most of our recruitment will be done locally.
been few challenges for the
construction teams so far, Gascoine said, and the land – the former OOC diesel depot – is favourable. Because the development area
as the site being environmentally-friendly, this will enhance the chances of long-term employment and of apprentices over the next 32 years.”
James Mendis
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rail technology magazine Dec/Jan 15 | 69
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