IMPROVING EMERGENCY-VENTILATION PROCEDURES IN SUBWAYS THRU HOT-SMOKE TESTS ---PAPERS PRESENTED AT THE 6TH INTERNATIONAL SYMPOSIUM ON THE AERODYNAMICS AND VENTILATION OF VEHICLE TUNNELS, DURHAM, 27-29 SEPT 1988

This article described the development of the emergency ventilation procedures used in the Montreal subway, and the simulations used to test their efficiency. The changes made in the emergency procedures due to the results of the simulations were also discussed, as were further improvements. The objective of the hot smoke simulations was to recreate the ambient conditions in the subway when a fire begins on a train stopped in the station, and to visualize the effects that different ventilation methods would have on these conditions. The set up included the following: enough electric resistance to produce 1 mw of heat, 2 remote controlled circuit brakers and 4 non toxic, non inflammable mineral oil smoke generators with a total capacity of approximately 120 cubic metres/minute. The white smoke was generated on the platforms and directed beneath the resistors. It was then drawn across the resistors and the rising convection current created by the difference in temperature between the resistor and the ambient air. Each ventilation method was tested in turn as follows: the hot smoke was generated for two minutes, after which time the fans were activated according to the ventilation mode chosen. During the test, air velocities were checked in various spots in the station, and a video tape of the smoke movement recorded. The results and video tapes were then analysed and compared with results obtained with the subway environment simulation (ses) computer program.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/094771149X
• Corporate Authors:

  BHRA, The Fluid Engineering Centre

  Cranfield, Bedfordshire,   United Kingdom 
• Authors:
  • DESROSIERS, C
• Publication Date: 1988

Language

• English

Media Info

• Pagination: p. 549-66
• Monograph Title: PAPERS PRESENTED AT THE 6TH INTERNATIONAL SYMPOSIUM ON THE AERODYNAMICS AND VENTILATION OF VEHICLE TUNNELS, DURHAM, 27-29 SEPTEMBER 1988

Subject/Index Terms

• TRT Terms: Conferences; Evaluation and assessment; Fires; Mathematical models; Simulation; Smog; Subways; Ventilation systems
• Geographic Terms: Canada
• Subject Areas: Data and Information Technology; Planning and Forecasting;

Filing Info

• Accession Number: 00487792
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• ISBN: 0-947711-49-X
• Files: ITRD, TRIS
• Created Date: Sep 30 1989 12:00AM