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Smoke Detection

British Standards 5839 states that Fire Alarm panels should be inspected daily by a responsible person.
The responsible person is also required to perform a weekly test of detectors and call points to ensure that correct operation is normal.
The results of these tests must be logged in the alarm logbook and these records must be made available for inspection where requested by the relevant authorities.
The system must also be inspected and serviced at intervals of between 3 - 6 months by a suitably qualified engineer.



Smoke detectors are self contained devices that are the size of a hand and are normally fitted to the ceilings of buildings. They can detect fires in their early stages by detecting the fire via a smoke detector and giving a warning via an alarm. 


There are three types of smoke alarm currently available on the market; ionisation, optical and combined.


IonisationThese are the cheapest. They have the ability to detect small particles of smoke produced by flaming fires, detecting this before the smoke gets too thick. They are however less sensitive to slow burning fire which gives off larger quantities of smoke before the flames appear.

Combined – These detectors are effective at detecting both slow burning as well as flaming fires; the two most common types of fire..

Optical – These are more expensive but are more effective at detecting slower burning smouldering fires. They are however less sensitive to free burning flaming fires.

Each type of alarm looks similar and are either battery powered or connected to mains electricity, or there can be a combination of the two power sources.


Infast Fire Protection recommends an additional light be fitted to your alarm. The light comes on when the alarm sounds and helps you find your way out as well as aiding those who are hard of hearing. For those that are hard of hearing Infast Fire Protection can provide alarms fitted with a pad. The pad vibrates when the alarm goes off with a strobe light alerting you.