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Promat Tunnel
Bormstraat 24 - 2830 Tisselt
Tel. : +32 (0)15 71 81 00
Fax : +32 (0)15 71 81 09 |
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Promat constructions / applications > Cable ducts
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In the event of a fire it is vital to the safety of the tunnel occupants that certain
electrical systems remain functioning until people have escaped. Such systems will
therefore require to be protected from fire for a specified period of time and include:
• Lighting for means of egress (emergency escape route lighting) and areas of
refuge
• Exit signs
• Communications
• Electrically operated extinguishing systems
• Electrically operated fire alarms
• Ventilation systems (smoke extraction)
• Tunnel drainage and fire pumps |
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| Cable protection system
constructed from PROMATECT®-H |
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In addition to protection from fire outside the duct, it is normally vital that any fire
within the duct is contained e.g. if cable sheathing ignites due to an electrical
overload.
A suitably designed duct will:
• Prevent the propagation of fire from one compartment to another
• Assist in maintaining escape routes
• Ensure the continuing operation of services
• Reduce damage to localised areas
• Contain smoke and toxic fumes from burning cables if the fire was caused within
the cable enclosure |
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By enclosing standard cables in the Promat Cable Duct Systems, all the above
requirements can be met, providing up to four hours fire protection, dependant on the
duct construction, and the fire exposure curve, whilst avoiding the use of more
expensive and bulkier fire-rated cables, which cannot provide a performance to the
more extreme exposure curves, such as the HCM and RWS fire |
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