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Fixed firefighting systems - automatic sprinkler systems - design, installation and maintenance (incorporating corrigendum December 2015)

BS EN 12845:2015

Fixed firefighting systems - automatic sprinkler systems - design, installation and maintenance (incorporating corrigendum December 2015)

Document Status

Withdrawn, Document not available for download


Core Supplement




Provides design, installation and maintenance requirements and recommendations for fixed fire sprinkler systems (particularly those integral to measures for the protection of life) in buildings and industrial plant. Covers extent of sprinkler protection, classification of occupancies and fire hazards, hydraulic design, water supply, pumps, spacing and location of sprinklers, pipe sizing and layout, valves, alarms and signage.


Supersedes BS EN 12845:2004+A2:2009 which remains current. See National foreword for information from the UK committee relating to areas of concern, guidance and UK practice. Amendment dated 31 December 2015 - The corrigendum corrects the page numbering of National Annex NA.


Publisher History

With over 100 years of experience the British Standards Institute is recognised as the UK’s National standards body. Their committees work with the manufacturing and service industries, government, businesses and consumers to facilitate the production of British, European and International standards.



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.

IHS Markit

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