The type of system required i.e. L1, L2, L3 etc and where appropriate, parts of .. BS +A Fire detection and fire alarm systems for buildings. BS +A applies to all fire alarm systems, from small manual networks to complex automated systems. Guidance on fire detection and alarm systems in residential buildings is given in BS BS +A has been revised to include the latest technology. This supersedes the previous issue (BS Part 1 – amendment 2 ) and is the primary document detailing the required standards.


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BS Part 1 - Wikipedia

General — gives the scope of the document, normative references and terms and definitions. This section also explains why a fire detection and fire alarm system may be needed and the type of systems available.


It provides several categories of systems, which can be used by designers to suit specific cases. It defines the exchange of information that is needed between the parties involved and stipulates when and how variations to recommendations may be adopted bs5839 part 1 2008 the main recommendations cannot be complied with Design considerations — re-groups all items which need to be considered during the system design stage.

Bs5839 part 1 2008 includes relating system categories and areas protected and assessing the subdivision of a system in detection zones and alarm zones.


More specifically, design considerations bs5839 part 1 2008 specific issues leading to the selection of the correct type of fire detection and audible and visual alarms as well as the specific type of control and indicating equipment and power bs5839 part 1 2008 equipment which should be used.

It also makes recommendations on network systems and radio-linked systems Limitation of false alarms and unwanted fire alarm signals — recognises that false alarms can seriously prejudice the safety of occupants by reducing their trust in any future alarms and that unwanted fire alarm signals can waste precious resources in the fire and rescue service.

Responsibilities for the limitation of such false alarms and unwanted fire alarm signals are clearly established and tools are given for use by those responsible to achieve the recommended limitation Installation — establishes the responsibilities of the installer and recommends best practices and workmanship as well as giving recommendations for the inspection and testing of the system wiring Commissioning and handover — specifies the process involving thorough testing of the installed system to ensure that it operates correctly in accordance with the recommendations of this standard and with the specification.

It specifies documentation and records which must be made available before the system hand-over to the purchaser for acceptance Maintenance — a critical and essential activity for ensuring the long-term reliability of the installed fire detection and fire alarm system.

Do wireless smoke alarms comply with BS ?

This section specifies the test and verification process to be carried out by the user or routine testing by a third-party inspection and servicing organization.

But I still believe that conventional systems are cheaper and bs5839 part 1 2008 reliable for most buildings.

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  • BS 5839-1:2002+A2:2008

I wonder if with the new lithium batteries the BS committee would still ask for duplicate power bs5839 part 1 2008 to equipment? They used to ask for a main and a backup battery. I do recommend a fair few Part 6 radio linked systems for holiday cottages to save the disruption of interlinking wiring.


Often, to identify any key changes involves hours of study of the detail of both the new and the superseded document.

To avoid that the key changes are as follows: To avoid confusion with other application standards such as BS Part 6 which cover domestic properties, the title has bs5839 part 1 2008 changed to more accurately reflect its scope and content.

In Care Homes and premises with occupants who will need assistance from staff in order to evacuate, it is important that accurate and unambiguous information regarding the source of a bs5839 part 1 2008 is given. It states that addressable systems should be used if the building has facilities for more than ten people to sleep.

bs5839 part 1 2008 It is stated that the responsibility to provide the Zone Plan should be decided at an early stage of the planning and that it should show at least the building entrances, the main circulation areas and the division into zones.

Agreed Variations should be clearly recorded in bs5839 part 1 2008 logbook and available for future reference by interested parties. Limits of ceiling heights for Category P systems with five minute Fire and Rescue attendance have been deleted.

Updated guidance is given on the provision of automatic transmission of fire alarm signals.