What is the British Standard BS5839: Part 6: 2004?
The British Standard BS5839: Part 6: 2004 is the definitive code of practice to which building professionals, architects, enforcing authorities, landlords and installers should refer for the design, installation and use of smoke and heat alarms in domestic properties. Six grades of fire detection systems are defined and usually the greater the fire risk the more comprehensive the system should be. Briefly the grades are: GRADE A: A full system with control and indicating equipment installed to BS5839: Part 1. GRADE B: Detectors and sounders using simpler specified equipment. GRADE C: Detectors and sounders or alarms with central control. GRADE D: Mains-powered alarms with integral stand-by power supply. GRADE E: Mains-powered alarms with no stand-by power supply. GRADE F: Battery-powered alarms. Three categories of life protection systems are defined and briefly these are: LD1: Alarms in all circulation spaces that form part of escape routes and all areas where a fire might start, but
