ASA S3.41 PDF download

ASA S3.41 – American National Standard for Audible Emergency Evacuation Signal (E2) and Evacuation Signals with Relocation Instructions (ESRI)

This Standard specifies the characteristics of acoustic signals to be used for audible emergencyevacuation and audible evacuation signals with relocation instructions. It applies to the audible signalonly and not to the signaling system components or equipment. The audible emergency signal isintended to draw the attention of all persons within the signal reception area to an emergency situation(fire, gas leaks, explosion, nuclear radiation, etc.) requiring immediate evacuation from the area. ThisStandard specifies parameters of the audible emergency signal, i.e., the temporal pattern, the requiredsound pressure level at all places within the intended signal reception area and the spectral contentfor certain applications, in order for the audible emergency signal to be recognizable.