How should you act in situations that require sheltering indoors?
In general warnings and emergencies, the authorities warn the public with emergency warnings and a general warning signal. The first thing to do in a general warning is to take shelter in the nearest indoor space and follow instructions. In most cases, this is enough to protect against the danger. The indoor space can be your home, school, workplace or other building.
Public warning systems are tested usually on the first non-holiday Monday of each month at noon.
Examples of situations that require sheltering indoors:
- a fire in the surrounding area causes high levels of toxic smoke
- an accident involving dangerous substances in the area causes risk of gas leakage
- risk of radiation, such as a nuclear power plant accident
Sheltering indoors is important
- Smoke fumes from a fire is always harmful to humans, and breathing the fumes may be dangerous or life-threatening. Smoke is easy to detect.
- If you can detect the danger yourself, act immediately: shelter indoors and turn off the ventilation.
- Shelter indoors at the latest when the authorities announce to do so with a general warning signal or emergency warning.
- Some toxic gases can be detected by smell, for example, while others are unnoticeable. Some dangerous substances are odourless and colourless.
Shut down ventilation and seal off gaps
- Everyone in the family or at a workplace should know how to shut down mechanical ventilation. However, not all buildings have mechanical ventilation and in some buildings, only the property maintenance company can shut down ventilation.
- When sheltering indoors is necessary, the space should be made as sealed off as possible.
- Shut all doors, windows and airways and seal all gaps with plastic wrap or duct tape, for example. This reduces the amount of smoke, gas or radioactive particles that can penetrate inside.
Do you know where the ventilation switch is?
- Because dangerous smoke and gases spread fairly quickly outdoors, the building’s residents or staff should know how to shut down ventilation without assistance. This requires that the location of the ventilation switch is known and accessible to everyone.
- For example, installing an emergency ventilation shutdown button near the entrance is often a good solution that allows anyone to turn off ventilation in a dangerous situation.
- The accumulation of radioactive iodine in the thyroid gland can be reduced with iodine pills.
- To make sure that the timing is right, only take a pill when prompted by the authorities. Follow the dosage instructions on the package.
- Iodine pills are sold at pharmacies.
Civil defence shelters
- In exceptional circumstances, civil defence shelters may need to be used. The authorities may decide on the use of civil defence shelters.
- The international sign for civil defence is a blue triangle on an orange background. The sign will guide to a civil defence shelter.
- Most civil defence shelters are located in residential and public buildings. They are traditionally built in the basement.