What is FM-200 and how does fire suppression work in a data centre?
As a professional data centre operator, we utilise a variety of systems to ensure that your IT equipment is safe from the effects and potential damage caused by a fire.
Within many of our data centres, we have a chemical based fire suppression system – FM200. This is a special fire extinguishing gas that removes the heat element of the fire triangle. You may have seen them around the data centre as big red cylinders.
FM200 is designed for data centres and means in the event of a fire occurring, it is extinguished extremely quickly – all without interruption to your services and no effect on your equipment.
An important component of the overall fire safety systems in a data centre is fire detection. These are the systems that make the decisions about the seriousness of an incident and whether to release the FM200 fire suppressing gas.
Fire detection in a data centre consists of two main systems:
- VESDA – Very Early Smoke Detection Apparatus. VESDA is constantly sampling the air to detect any minute particles of early stage combustion. Due to its sensitivity, should this system detect anything out of the ordinary, specially trained employees are able to quickly locate, identify and mitigate any potential risks before a full fire begins.
- Ionising and Optical – We also have more traditional fire detection equipment, such as ionising and optical based detectors throughout the data centre. These are more traditional fire detectors such as those which you may find in offices or your home.
For the FM200 fire suppression gas system to release, we need to have entered a ‘double knock’ situation. This means that two independent ionising or optical sensors have detected something like a fire. This starts a 60 second countdown before the FM200 is released.
In normal operations the progression of the system works through five stages:
- VESDA Pre-Alarm – if the system notices anything that could be the very early stage of a fire
- VESDA Fire – the system detecting some particles that are certainly related to something combusting
- Initial Knock – a traditional sensor has activated
- Double Knock – at least one other sensor has activate
- FM200 Release – the fire suppression gas is released
If you are looking to protect your valuable infrastructure, then a data centre provider that takes the necessary steps to protect it from fire damage is an absolute must. Feel free to talk to us about our fire detection, security and cooling capabilities at our data centres by contacting us here.