Tunnel ventilation systems provide fresh air

Elta Fans supplied specialist ventilation fans for the A3 Hindhead Tunnel in Surrey, UK which opened in July this year.
February 15, 2012 Read time: 1 min
Fans from elta provide fresh air into the uK's new Hindhead tunnel

Elta Fans supplied specialist ventilaton fans for the A3 Hindhead Tunnel in Surrey, UK which opened in July this year.

The A3, which previously ran around the Devil's Punch Bowl, a local beauty spot, now runs right under it in a 2km tunnel built by main contractor 1146 Balfour Beatty.

Ventilation contractor James Paget Services installed two sets of long-cased axial fans from Elta with matching stainless steel ancillaries to ventilate the void in the low-point sump. Each fan works for 12 hours, switches to standby for 12 hours, and then operates in the opposite direction.

The order also included four bifurcated, cylindrically cased ATEX axial fans with matching ancillaries. The bifurcated fans have been developed for handling hostile conditions of hot, dust-laden air, corrosive fumes or gases and are designed so that the gases bypass the motor.
Road Structures

For more information on companies in this article

Related Content

  • Foiled by foliage from Biotecture
    June 27, 2022
    Richard Sabin, managing director of Biotecture*, details how living walls provide an innovative solution for reducing air pollution and improve air quality along congested urban highways.
    Read More
  • Zipping up road lanes – with Barrier Systems
    September 10, 2018
    QMB has a Lindsay Road Zipper on duty near Montreal. World Highways deputy editor David Arminas climbed aboard As vice president of Canadian barrier specialist QMB, based in Laval, Quebec, Marc-Andre Seguin is sanguine about the future for moveable barriers. On the one hand, it looks good. The oft-stated advantage of moveable barriers is that the systems are cheaper to install than adding a lane or two to a highway or bridge. Directional changes to lanes can boost volume on a road without disrupting tra
    Read More
  • Ulma in Poland’s S7 tunnel
    October 22, 2020
    Construction of Poland’s longest road tunnel is progressing with an MK Formwork Carriage system from Spanish manufacturer Ulma.
    Read More
  • Innovations in concrete paving technology
    March 16, 2012
    Paving with concrete offers a strong and long life base for a roadway, with manufacturers continuing to develop technologies – Mike Woof reports. Innovation comes fast in the concrete paving market with a number of specialist suppliers offering an array of solutions to meet the needs of slipforming contractors. These machines can be used for a range of applications from large-scale airport runway or highway construction duties, tunnel jobs, bridge decks, barriers, traffic islands and kerbs. Because the app
    Read More

Highlighted Content