TUNNEL FIRE DETECTION

A fire alarm system has been developed by the Swiss company securiton which can cope with the particular conditions of a road tunnel whilst retaining a high sensitivity. The transafe linear differential heat detector consists of a sensor tube of 5mm diameter copper tube mounted centrally in the tunnel roof connected to wall-mounted diaphragm boxes at intervals of 100 -150m. The mechanism of the detector is described. Rises in temperature can be detected within seconds even during high wind velocity and a distinction can be made between the heat from a fire and climatic changes. The system is also remarkable for its protection from false alarms. This is achieved by periodic self-checking of all of the parts of the system, a process which can be interrupted in the event of a real fire. The system is virtually maintenance-free with any adjustments being made from the floor. It has been widely used in Austria, Switzerland and West Germany. (TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/09568700
• Corporate Authors:

  Mining Journal Limited

  60 Worship Street
  London EC2A 2HD,   England 

  PHILIPP HOLZMANN AG

  60 WORSHIP STREET
  London,   United Kingdom 
• Authors:
  • -
• Publication Date: 1988-12

Language

• English

Media Info

• Pagination: p. 301
• Serial:
  • WORLD TUNNELLING AND SUBSURFACE EXCAVATION
  • Volume: 1
  • Issue Number: 4
  • Publisher: THE MINING JOURNAL LTD
  • ISSN: 0956-8700

Subject/Index Terms

• TRT Terms: Detection and identification; Detectors; Errors; Fires; Heat; Sensors; Tunnels
• ITRD Terms: 9115: Detection; 6440: Error; 1624: Fire; 6743: Heat; 6120: Sensor; 3374: Tunnel
• Subject Areas: Bridges and other structures;

Filing Info

• Accession Number: 00499377
• Record Type: Publication
• Source Agency: Transport and Road Research Laboratory (TRRL)
• Files: ITRD, TRIS
• Created Date: Sep 30 1990 12:00AM