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Product category: Drainage, Footings and Piling
News Release from: Senior Hargreaves | Subject: Capital Contracts For Ductwork
Edited by the Buildingtalk Editorial Team on 05 December 2003

Capital Contracts For Ductwork

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Ventilation ductwork specialist Senior Hargreaves has won two contracts approaching £6 million on the final phase of the Channel Tunnel Rail Link (CTRL).

Hargreaves has won a supply and installation contract with CORBER (Costain, O'Rourke, Bachy Soletenache and Emcor Rail) consortium at the CTRL St Pancras site The refurbishment and extension of St Pancras is being carried out by CORBER working with Rail Link Engineering (RLE), who are the project manager and designer

Ventilation work by Hargreaves will include environmental comfort control and emergency smoke exhaust.

The scope of this work will cover public areas, administration offices and car parks.

Work started on site in November with contracts running until 2006, with the new rail link and facilities will be operational in 2007.

Hargreaves will also carry out ventilation work on the London and Thames tunnels in a further contract with Emcor Rail Ltd, the main contractor for CTRL.

This contract includes the provision of standard ventilation and emergency ventilation systems.

These special systems are housed in five shafts that link the tunnels to the surface for the London tunnels, St Pancras to Stratford and Stratford to Dagenham, and to portal buildings on each side of the Thames.

The main function of the ventilation systems is to either supply or extract air from the tunnels in the event of incident conditions.

Sophisticated computerised control will enable maximum flexibility of use and be able to provide air for passenger comfort in a stationary train and for maintenance work in the tunnels.

At each of the Thames portals, Hargreaves will supply and install systems that will inject large volumes of air through portal ejectors (a Saccardo system.), which will induce airflow through the tunnel.

All of the ventilation fan areas will have integral access platforms gantries and ladders for maintenance.

Hargreaves will also be responsible for providing the ventilation systems in the head house buildings at the top of each shaft which house switch and control rooms.

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