As autumn arrives, buildings begin to change. Damp mornings, increased heating, contractors returning to indoor works and boilers firing up after periods of inactivity can all introduce new conditions for fire alarm systems.
For housing associations, commercial premises and other large buildings, this can mean an increase in unwanted fire alarm signals. False alarms are more than an inconvenience: repeated activations can cause disruption, unnecessary fire service attendance and, importantly, alarm fatigue. Government guidance highlights the risk that frequent false alarms can lead occupants to become complacent when a genuine fire alarm sounds.
Choosing the Right Fire Detector
One of the most effective ways to reduce false alarms is making sure the detection technology is appropriate for the environment.
Optical smoke detectors detect smoke particles using light and generally provide a faster response to fire than heat detectors. They can be appropriate for many areas, but smoke, steam, dust and other airborne particles can still cause unwanted activations.
Thermal or heat detectors, meanwhile, respond when a defined temperature is reached or when temperature rises abnormally. They are generally less prone to false alarms and can be appropriate for areas such as kitchens, boiler rooms and other locations where smoke detectors may be unsuitable. However, they respond differently to developing fires, so detector selection should always be based on the building's fire risk assessment and the specific environment.
In some environments, multi-sensor technology can provide another option, combining different detection methods to improve reliability and reduce unwanted activations.
Using CCTV to Help Verify an Alarm
Technology can also give building and security teams greater visibility when an alarm activates.
Where appropriately designed and integrated, CCTV can be linked with fire alarm systems to provide visual information about the area in alarm. A security team or monitoring centre can then assess available camera footage for visible signs of smoke, fire or another cause of activation.
This can help organisations investigate alarms more quickly and make informed decisions in line with their fire strategy and emergency procedures. It should complement, not replace, the fire alarm, evacuation arrangements or the requirement to call the emergency services when a fire is confirmed or suspected.
Autumn Is a Good Time to Review Your System
False alarms should not simply be accepted as part of running a building. Each activation should be investigated so recurring causes can be identified and addressed. Regular testing, maintenance, correct detector selection and reviewing changes to how spaces are used all have an important role to play.
For organisations in Manchester and across the UK, Total Fire Group can help review fire alarm requirements, detection technology and wider fire protection systems, alongside integrated security solutions.
The objective is simple: fewer unwanted alarms, better information when an alarm occurs, and a fire detection system that responds appropriately when it really matters.