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

  • Pre-stressed bridge decks use modular formwork system
    July 9, 2012
    Imaginative formwork, often using modular components, is helping to shape some challenging bridges worldwide. Patrick Smith reports Traffic volumes in and around Prague have swollen massively in recent years, pushing the existing road network to the limits of its capacity. To permanently ease congestion in the Czech capital's centre, a multi-lane orbital motorway is under construction as a high capacity bypass for central Prague and to link up all the motorways and other major highways radiating from the ci
    Read More
  • Helsinki's tunnel project
    April 11, 2012
    A novel approach to utilities installation will lengthen the life of Helsinki's streets, reports Mike Woof A major utilities project in Finnish capital Helsinki will offer huge benefits for the city's streets and traffic flow rates in years to come. A new tunnel system is being excavated under Helsinki for the power company Helsingin Energia, although this will be co-owned by the city. Called the Common Utility Tunnel (Meilahti-Pasilak-Käpylä LU2), the excavations form an extensive network spreading out un
    Read More
  • Helsinki's tunnel project
    May 9, 2012
    A novel approach to utilities installation will lengthen the life of Helsinki's streets, reports Mike Woof. A major utilities project in Finnish capital Helsinki will offer huge benefits for the city's streets and traffic flow rates in years to come. A new tunnel system is being excavated under Helsinki for the power company Helsingin Energia, although this will be co-owned by the city. Called the Common Utility Tunnel (Meilahti-Pasilak-Käpylä LU2), the excavations form an extensive network spreading out un
    Read More
  • Winning formula for formwork
    July 19, 2012
    An unusual application of formwork took place recently in France, while formwork using one particular engineering construction kit was used for the first time in Poland. Guy Woodford reports An 80m long wild game underpass is an innovative feature of the Route Nationale 88 (RN 88) expansion in south-west France. For construction of the arched underpass tunnel, a PERI tunnel formwork carriage using VARIOKIT engineering construction kit was used. Thanks to the equipment’s easy handling, along with pre-assembl
    Read More

Highlighted Content