BS 9251:2021 pdf download

BS 9251:2021 pdf download.Fire sprinkler systems for domestic and residential occupancies — Code of practice
Product certification/inspection/testing. Users of this British Standard are advised to consider the desirability of third-party certification/ inspection/ testing of product conformity to this British Standard. Appropriate conformity attestation arrangements are described in BS EN ISO 9001. Users seeking assistance in identifying appropriate conformity assessment bodies or schemes may ask BSI to forward their enquiries to the relevant association. Test laboratory accreditation. Users of this British Standard are advised to consider the desirability of selecting test laboratories that are accredited to BS EN ISO/IEC 17025 by a national or international accreditation body. This publication can be withdrawn, revised, partially superseded or superseded. Information regarding the status of this publication can be found in the Standards Catalogue on the BSI website at bsigroup.com/standards, or by contacting the Customer Services team. Use of this document As a code of practice, this British Standard takes the form of guidance and recommendations. It should not be quoted as if it were a specification and particular care should be taken to ensure that claims of compliance are not misleading. Any user claiming compliance with this British Standard is expected to be able to justify any course of action that deviates from its recommendations. It has been assumed in the preparation of this British Standard that the execution of its provisions will be entrusted to appropriately qualified and experienced people, for whose use it has been produced. Where websites and webpages have been cited, they are provided for ease of reference and are correct at the time of publication. The location of a webpage or website, or its contents, cannot be guaranteed. .
4 Preliminary work and consultation
4.1 Initial considerations
Before undertaking the design of a residential sprinkler system for a specific property, the following factors, as a minimum, should be evaluated, obtaining specialist advice where necessary:
a] the type of occupancy of the property (see 4.3);
b] the water supply requirements and availability; and
c] any additional system enhancements required (see 4.2.3).
NOTE 1 See also 4.2.2.
NOTE 2 In some buildings or parts of buildings, a higher level of protection might be required than that provided in this British Standard (see also 4.2.3 and 5.5).
NOTE 3 In buildings where there is a mix of residential, non-residential and commercial use (e.g. where flats are above shops, car parks, bin stores, offices and retail units), it is generally appropriate to protect the residential parts using this British Standard and the non-residential parts using BS EN 12845. See also 5.5 and 5.6.
4.2 Consultation
COMMENTARY ON 4.2
Some premises might have multiple authorities having jurisdiction who might be concerned with life safety, property protection, business continuity, heritage preservation and environmental protection.Some authorities having jurisdiction might impose additional requirements beyond those of this British Standard.