In Essonne, the warning sirens will sound exceptionally on two consecutive days, December 4 and 5, 2024. This double sound signal is linked, on the one hand, to the monthly siren test, usually scheduled for the first Wednesday of the month, and on the other hand, to a civil security exercise organized by the prefecture. This exercise, scheduled for Thursday, December 5, aims to test the effectiveness of crisis measures and raise awareness among the population.
Why do the sirens sound two days in a row in Essonne ? Don't panic, this is completely normal and expected! Essonniens will exceptionally hear the warning sirens two consecutive daysTHE December 4 and 5, 2024. This unusual situation arises from two distinct events: the monthly siren test, which takes place every first Wednesday of the month, and a civil security exercise organized by the prefecture. The latter, scheduled for Thursday, December 5, aims to verify the effectiveness of emergency measures, particularly around the Grigny oil site, while raising awareness among the local population.
On Thursday, December 5, the exercise will take place on the CIM company's oil site in Grigny. The cities of Grigny, Draveil, Viry-Châtillon and Ris-Orangis are directly concerned, because the sirens will be activated to assess their audibility and their impact on residents. The main objective is to verify the coordination of emergency services within the framework of Special Intervention Plan (PPI)while simulating crisis management on a sensitive industrial installation.
At the same time, the FR-Alert device will also be put to the test. This system will send a SMS alert to residents of the areas concerned, detailing the safety instructions. The prefecture specifies that these messages will include the words “ EXERCISE » to avoid any confusion. Residents are asked to remain calm, continue their usual activities, and not congest the emergency lines.
These annual exercises allow the Essonne prefecture to improve the reactivity emergency services and to effectively prepare the population for possible crisis situations. So don't be surprised if you hear the sirens two days in a row: everything is under control.
