BS 9251 pdf free download

BS 9251:2021 pdf free download.Fire sprinkler systems for domestic and residential occupancies – Code of practice.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application1. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
Standards references
BS 5839-1:2017. Fire detection and fire alarm systems for buildings — Part 1: Code of practice for design, installation, commissioning and maintenance of systems in non-domestic premises
US 5839-6:2019. Fire detection and fire alarm systems for buildings — Part 6: Code of practice for the design, installation, commissioning and maintenance offire detection and fire alarm systems in domestic premises
BS 855w Guide to the design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages – complementwy guidance to BS EN 806
BS EN 805, Water supply – Requirements for systems and components outside buildings
BS EN 806-(all parts), Specifications for installations inside buildings conveying water for human consumption
BS EN 837-1:1998, Pressure gauges — Part 1: Bourdon tube pressure gauges — Dimensions, metrology, requirements and testing
BS EN 1057:2006+A1:2010, Copperand copper alloys —Seamless, round copper tubes for water and gas in sanitary and heating applications
BS EN 10226-1, Pipe threads where pressure tight joints are made on the threads — Part 1; Taper external threads and parallel internal threads – Dimensions, tolerances and designation
BS EN 10226-2, Pipe threads where pressure tight joints are made on the threads — Part 2: Taper external threads and taper internal threads – Dimensions, tolerances and designation
BS EN 10255, Non-alloy steel tubes suitable for welding and threading — Technical delivery conditions
BS EN 12259-1, Fixed firefighting systems — Components )orsprinkler and water spray systems — Part 2: Sprinklers
BS EN 12845:201 5+A1 :2019, Fixed firefighting systems — Automatic sprinkler systems — Design, installation and maintenance
BS EN ISO 9453, Soft solder alloys — Chemical compositions and forms
ASTM F442, Standard specification for chlorinated poiy(vinyl chloride) (CPVC) plastic pipe (SDR-PR)
Other references
(Ni) BUILDING RESEARCH ESTABLISHMENT. Plastic pipe and fittings for use in automatic sprinkler systems. LPS 1260. 2014. Watford, Hertfordshire.
(N2) BUILDING RESEARCH ESTABLISH M ENT. Requirements for testing flexible hoses for sprinkler systems. LPS 1261. 2014. Watford, Hertfordshire.
3 Terms and definitions
For the purposes of this British Standard the following terms and definitions apply.
3.1 alarm device
device for detecting water flow in or through a sprinkler system which initiates an alarm signal 3.2 alarm receiving centre
continuously manned premises, remote from those in which a fire detection and fire alarm system is fitted, where the information concerning the state of the fire alarm system is displayed and/or recorded, allowing the fire and rescue service to be summoned
3.3 alarmtestvalve
valve through which water can be discharged to test the operation of an alarm device
3.4 area of operation
maximum area over which it is assumed, for design purposes, that sprinklers operate in a Fire NOTE This is sometimes referred to as the assumed maximum area of operation”
[SOURCE: BS EN 12845:2015+A1, 3.9, modified — Note from BS 5306-0:2011 added]
3.5 authority having jurisdiction (AHJ)
organization, office, or individual responsible for enforcing the requirements of legislation or standards, or for approving equipment, materials, an installation, or procedure
3.6 backflow
movement of the fluid from downstream to upstream within an installation
[SOURCE: KS EN 1717:2000, 3.5]
3.7 backflow prevention device
device intended to prevent contamination of wholesome water by backflow in a water supply system [SOURCE: BS EN 1717:2000,3.6, modified — additional words Included]
3.8 building height
height of top storey
NOTE 1 SeeF4qureL
NOTE 2 The number of soreys and building heqht is to be determined in accordance with UK building regulations guidance, as appropriate — Approved Document B (England and Wales) [1). the Building Standards Technical
Handbook (Scotland) (21 and Technical Booklet E (Northern Ireland).BS 9251 pdf download.