For most people, a simple instruction like “please leave the building by the nearest available exit” can be acted upon quickly and easily. But for wheelchair users, the disabled and infirm, this isn’t always the case. Current building regulations recognise this and insist that all new non-domestic buildings with more than one storey provide ‘refuge’ areas which are relatively safe places where people who cannot easily use fire escapes can call for assistance and wait until help arrives. Simple, effective two-way communication in these areas is essential, firstly to assist rescue teams in determining where assistance is required and secondly to reassure people help is on the way. Communication systems in refuge areas are known as emergency voice communication (EVC) systems. Their design and installation is governed by BS 5839 PART 9.
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