On 27 October the four Lafcarr sirens that make up Monzón's public warning system for chemical alerts will be activated. The devices were upgraded and improved last August. The Government of Aragon, through its Civil Protection service and in coordination with Monzón Town Council and Lafcarr, has scheduled a live sound test to check coverage and sound intensity.
Over half an hour, between 12:00 and 12:30, the system will first sound a one-minute test. The sirens will then be activated three more times: two three-minute emergency start tones and a one-minute end-of-emergency signal, completing the check. During the test, the staff assigned to take readings will be spread across various checkpoints. Sound levels are expected to reach 85 decibels in the areas nearest the siren towers and at least 65 decibels further away.
Monzón's External Emergency Plan currently covers four companies on the Paúles and La Armentera industrial estates, so that any incidents arising from their activity can be dealt with in a coordinated and immediate way, whether from chemical risk or from risks associated with the transport of dangerous goods or gas and oil pipelines.
For more information, you can listen here to the interview with a Lafcarr technician on Radio Cinca 100's programme Monzón con la transformación digital.

More information:
https://www.diariodelaltoaragon.es/noticias/comarcas/cinca-medio-1/2023/10/17/monzon-prueba-con-exito-las-sirenas-de-emergencia-quimica-y-el-sistema-es-aler-1684778-daa.html
https://www.heraldo.es/noticias/aragon/huesca/2023/10/17/monzon-prueba-las-sirenas-y-los-mensajes-de-alerta-en-un-simulacro-de-accidente-quimico-1684720.html