The ventilation system for the tunnel section of the Vancover Advanced Light Rail Transit (ALRT) is designed to meet requirements for comfort and safety in all aspects of normal congested and emergency operation. Introduction of U.S. National Fire Protection Association Standard 130 for ventilation of underground fixed-guideway systems in a fire situation came simultaneous with design of the two-level tunnel in Vancouver and was incorporated as part of the design. Tunnel ventilation is complicated by two stations in the subway section and their effects on air flow patterns. Trains are not air conditioned but do have forced ventilation for air supply and temperature control. This requires maintenance of a tunnel design temperature of 30 deg C and a maximum air velocity felt by passengers of 5 m/s. In situations where trains are held in tunnels but there is no fire, air flow must be maintained to assure car temperatures are within safe limits. In emergencies involving generation of smoke or fire, fundamental criterion for design of emergency ventilation is to assure a supply of fresh air to control products of combustion and provide smoke-free evacuation routes for passengers and access for firemen. NFPA 130 also specifies the mode of control for ventilation by transit personnel and by firemen.

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  • Corporate Authors:

    Morgan-Grampian (Construction Press) Limited

    Morgan-Grampian House, 30 Calderwood Street
    London SE18 6QH,   England 
  • Authors:
    • Henson, D A
    • Bell, RJW
  • Publication Date: 1985-12

Media Info

  • Features: Figures;
  • Pagination: p. 28-30
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00455105
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Aug 27 2004 10:00PM