Evacuation Tones in Aged Care Facilities

AS 1670.4-2004Almost every day we receive a telephone call or email from the public asking what appears to be a simple question about fire protection.

Over the weekend, I received the following email from 'Alan' asking about the operation of an emergency warning system;

Has there been any recent changes to the alert sequence; alert,evac then voice over. we have been told that the system must go direct to voice over {evacuate evacuate} this would cause serious problems in the aged care industry.

Before I answer the question, it is important that we go over a couple of background issues;