The key facts about what to do if an incident occurs
If an incident that may put the population in danger occurs at a Swiss nuclear power plant, a general alarm will be sounded. This is a regular rising and falling tone. The alarm will sound for one minute from stationary sirens and will be repeated once during the following five minutes. The general alarm is sounded twice:
- The first alarm is the signal for the population to prepare for protective measures (e.g. prepare to go into the basement or to a shelter, ready their iodine tablets).
- The second alarm, which is sounded if the danger is more serious, is the signal for the population to implement the protective measures (e.g. go into the basement or to a shelter, take the iodine tablets).