Statistics show that buses burn with alarming frequency. These vehicles are susceptible to fire for many reasons. They often operate around-the-clock under severe strain. They use flammable liquids - lubricating oil, gasoline, diesel oil, greases and hydraulic fluids - in their normal operation. They collect combustible debris such as oil particles. And they have many surfaces - engine blocks, manifolds, turbochargers and brake systems - which can get hot enough to ignite these flammable liquids and debris.

A fire can result in expensive repair or replacement of valuable components, costly downtime or loss of business continuity. Worse yet, it can mean serious personal injury to vehicle operators. Insurance companies are well aware of these facts. That´s why they request reliable fire protection on buses.

General

The fire suppression system described here is a first-aid protection. It is not designed to extinguish all types of fire that may occur, especially not where unusually large amounts of flammable liquids have collected and have ample oxygen supply. It is therefore necessary to have also other fire extinguishing equipment available to be able to quench possible re-ignition, if the system has not put out the fire completely.

Take care to avoid collections in the vehicle of combustible debris and of oils and fluids that can intensify the fire or spread it to spaces that otherwise do not constitute a fire risk. If a major modification is made on the vehicle or if the alarm and /or the extinguishing system for some reason has been disconnected, contact an authorised service company to restore and test the system.

Fire extinguishing installation

System Description

Fire is detected by a linear heat detector and Alarm panel, that in the event of fire triggers a sequence of events distributing the extinguishing agent through pipes to a series of nozzles aimed directly at the areas of risk. At the same time the alarm system is activated, additional warning can be provided to the operator through either the drivers information system, or by the means of an alarm horn/lamp. Allowing the Driver to take a suitable course of action.

Automatic fire system

The automatic system will sound until the detection wire is cut off, this is configured because the bus Fire Suppression System should be serviced immediately after a discharge/fire. The discharge period varies on the number of nozzles and the size of the suppression cylinder supplied. But typical discharge periods are in excess of 20 seconds.

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