Guide to the changes in BS 5839-1:2025
Guidance Note
Document Status
Current
Supplement
Mechanical & Electrical Supplement
Series
Guidance Note
Abstract
Collates a history of changes to BS 5839-1 and looks at the new numbering within the 2025 version of the standard. Also considers the following topics: system categories, variations, interface placement, system components, obstacles to detectors, call points, fire alarm tones, remote indicator, alarm transmission, heat detectors, fire detectors, cabling, ceiling heights, detectors in voids, power supplies, false alarms, maintenance and repair, documentation and handover.
History
The information set out in this document is believed to be correct in the light of information currently available but it is not guaranteed and neither the Fire Industry Association nor its officers can accept any responsibility in respect of the contents or any events arising from use of the information contained within this document. Version 1.
Subjects
- Building services
- Electrical services
- Fire detection equipment
Publisher History
The British Fire Protection Systems Association (BFPSA) the Fire Extinguishing Trades Association (FETA) and the Fire Industry Confederation (FIC) merged in April 2007 to form the Fire Industry Association.
Information
NBS
NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.
Accuris
We connect trusted knowledge to customers' workflows – mitigating risk, increasing efficiency and accelerating innovation For more than 60 years, leading R&D and engineering-intensive organizations have relied on us to achieve on-time, on-budget delivery of complex projects and new products. We deliver an unparalleled combination of technical content and Artificial Intelligence (AI) technologies to surface answers from the vast universe of technical knowledge, both inside and outside the organization. In a single interface, we connect the dots between information scattered across many different sources, allowing technical professionals to make better, more informed decisions faster.