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.
April 11, 2012 Read time: 1 min
Fans from elta provide fresh air into the uK's new Hindhead tunnel
RSS

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

  • Ambitious road tunnelling projects around the world
    November 29, 2013
    The construction of the world’s longest subsea road tunnel in Norway and a vital new link under the Bosphorus Strait in Turkey are among a host of exciting, major road tunnel-based projects currently being undertaken across the globe. Guy Woodford reports Sandvik DTi series tunnelling jumbos are being used for the excavation of Solbakktunnel, set to become the world’s longest subsea road tunnel.
    Read More
  • Recycled organic compost stabilises embankments
    April 11, 2012
    Waste & Resources Action Programme (WRAP) is a UK government-funded body designed to encourage greater resource efficiency. This body completed a trial with contractor Balfour Beatty and the Highways Agency to test the innovative use of recycled organic compost along roadside embankments.
    Read More
  • Clever approach to reducing bridge vibrations
    November 14, 2013
    Reducing vibrations on a bridge, supplying high-quality binders to emerging countries and helping small and medium players with warm mix, this month’s stories showcase some innovative bitumen technology solutions - Kristina Smith reports The Kessock Bridge in the Highlands of Scotland has become the third bridge in the UK to be resurfaced with Gussasphalt. A dense mastic asphalt containing Nynas Endura N5, a polymer modified binder, Gussasphalt has been designed to have a longer life than standard mastic as
    Read More
  • Sunderland’s New Wear Crossing takes shape
    February 16, 2017
    The New Wear Crossing will be the first bridge to be built over the River Wear in Sunderland, UK, for more than 40 years Raising the bridge’s 100m-tall pylon promised to be a stunning visual sight, but also a tricky operation dictated by extremely variable local weather. World Highways went to press just before the operation, but not before the pylon had arrived by barge on January 7. It had completed a two-day crossing of the often unpredictable North Sea from the Belgian port of Ghent where it was f
    Read More

Highlighted Content