In case of an immediate danger towards the public it is possible to alert the public through a special civil defense alarm system. This could be in the case of fire, toxic gas or poisoned water.
The alarm consists of a 7 second long tone followed by 14 seconds of silence; this lasts for at least 2 minutes. When you hear the signal you should:
- Go inside
- Listen to the radio, first and foremost SR P4
- Close doors, windows and ventilation
Information can also be provided through television or teletext.
The alert is followed by a signal that indicates “all clear”. This consists of one signal that is 30-40 seconds long.
This alarm system is tested the first Monday of March, June, September and December.
Storstockholms brandförsvar
Skapat av: Erica Imeson
Publicerat av: Jonas Nyström
Senast uppdaterat: 2010-10-04