Automatic Fire Protection System

Novec 1230, manufactured by 3M, is a unique fire extinguishing agent. Among the Clean Agents, it has a the lowest atmospheric lifetime of 5 days and zero ozone depletion potential. It is stored as a liquid, which makes it easier for transport. As with other clean agents, it is an excellent choice for computer rooms, electrical control rooms, storage areas, and any high value area. Novec is calculated to discharge within 10 seconds, and is normally calculated at a 4.2% concentration. Contact an AFT specialist for help with Novec 1230, including the associated detection and control equipment.

1. Detecting a fire in the engine compartment

Bus fire suppression systems work by detecting and suppressing the fire before it spreads. Pre-engineered systems with non-electric detection do not rely on electricity and provide 24/7 protection. The system routes linear pneumatic detection tubing throughout the engine compartment to detect the fire.

Should a fire start in the engine compartment, the increase in temperature or direct contact with flame will cause the tubing to burst, releasing pressure on the cylinder.

2. Discharging suppression agent

The change in pressure signals the system to discharge the agent through strategically placed diffuser nozzles, flooding the engine compartment quickly to suppress the fire. An optional system indicator is available and alerts the driver the system has activated or requires servicing.

3. Suppressing the fire

The recommendation for engine fire suppression systems is the use of ABC Dry chemical because of its effectiveness in suppressing Class A, B, and C fires. These fires hazards may originate from fuel leakage, faulty electrical connections, short circuits, or hydraulic hoses. From a system standpoint, there is no difference in suppressing a diesel, gasoline, LNG, or CNG fire.

Are automatic fire suppression systems required for buses?

While the National Transportation Safety Board (NTSB) does recommend that all new and in-service school buses be equipped with automatic fire suppression systems, there is not a current regulation that requires it within the INDIA. With an average of 4-5 of bus fire occurring daily in the INDIA., a fire suppression system provides an additional layer of protection.