Foam extinguishing installations
Foam extinguishing installations with Hi-Ex extinguishing foam can be used for specific situations.
Hi-Ex foam extinguishing installations
Not all foam concentrates are suitable to be used in Hi-Ex foam extinguishing installations. With Hi-Ex inside air extinguishing installations, a specially tested and approved foam concentrate must be used which is suitable to absorb (acid) combustion products into the foam bubbles.
Risks related to using foam and Hi-Ex foam extinguishing installations
The enormous blanket of foam produced by Hi-Ex reduces the overall sight on escape routes and possible obstacles. Within 30 seconds, the layer of foam has reached a level that it completely blocks the view. This often creates a very dangerous situation where people may panic and become disoriented.
Additionally, exposure to and inhalation of the expanded foam can lead to irritation to the respiratory tract and a risk of asphyxiation. When the skin is exposed to the expanded foam, it can also lead to irritation of the skin.
When an Hi-Ex foam extinguishing installation has been activated, the emergency services will only enter such a space wearing protective clothing and independent respiratory protection devices.
Safety precautions Hi-Ex foam extinguishing installations
When using Hi-Ex foam extinguishing installations, one has to particularly focus on the aspects of safety of people with regard to breathing, sight (escape routes can no longer be used), aggressive reactions to the skin, and the environmental aspects due to (corrosive) substances that are added to the agent in order to create the foam.
When a HI-Ex foam extinguishing installation is used in manned spaces, precautions must be taken to prevent the installation from being automatically activated.
This is why foam extinguishing installations are classified in class III.