BS_8663-1-2019.pdf

st andar d999BS8663-1:2019BSI Standards PublicationFixed fire protection systems-Components for watermist systemsPart 1:Specification and test methods for watermist nozzlesbsi.st andar d999BS8663-1:2019BRITISH STANDARDFigure C.2-Indicative water collection arrangement for sidewall watermist nozzles(plan view)19Annex D(normative)Functional test20Table D.1-Functional test parameters20Figure D.1-Example of functional test oven21Annex E(normative)Strength of watermist nozzle body and deflector tests22Figure E.1-Example of a tensile/compression test machine23Annex F(normative)Strength of release elements test24Table E1-Y factors for normal distributions to determine one sided tolerance limits25Annex G(informative)Notes on strength test for fusible link release elements26Annex H(normative)Leak resistance test27Annex I(normative)Heat exposure27Table 1.1-Heat exposure test28Annex J(normative)Automatic glass bulb watermist nozzle thermal shock test28Annex K(normative)Corrosion tests29Figure K.1-Typical vessel for sulfur dioxide corrosion test32Annex L(normative)Watermist nozzle coatings low temperature test33Annex M(normative)Water hammer test34Annex N(normative)Thermal response tests34Table N.1-Wind tunnel conditions for plunge test35Figure N.1-Side view of design of mounting plates arrangement37Annex 0(normative)Heat-resistance test38Annex P(normative)Vibration test38Figure P1-Vibration test curve39Annex Q(normative)Impact test40Figure Q.1-Typical impact test apparatus40Annex R(normative)Resistance to low temperature test41Bibliography42Summary of pagesThis document comprises a front cover,and inside front cover,pages i to iv,pages 1 to 42,an inside back cover anda back cover.II THE BRITISH STANDARDS INSTITUTION 2019-ALL RIGHTS RESERVEDst andar d999BRITISH STANDARDBS8663-1:2019ForewordPublishing informationThis British Standard is published by BSI Standards Limited,under licence from The BritishStandards Institution,and came into effect on 31 July 2019.This British Standard was prepared bySubcommittee FSH/18/5,Watermist systems,under the authority of Technical Committee FSH/18,Fixed fire fighting systems.A list of organizations represented on these committees can be obtained onrequest to their secretary.Relationship with other publicationsThis part of BS 8663 is the first in what is expected to be a series of standards covering watermistsystem components.It is intended to be read in conjunction with BS 8458 for residential and domestic watermist systemsor BS 8489-1 for industrial and commercial watermist systems.Information about this documentWatermist nozzles are for use in watermist systems and are designed to provide an additionaldegree of protection of life and property,above that already achieved by the building design and theinstallation of smoke and/or fire detectors and systems.This British Standard presumes that thewatermist protection will form part of an integrated fire safety system.Product certification/inspection/testing.Users of this British Standard are advised to considerthe desirability of third-party certification/inspection/testing of product conformity with this BritishStandard.Appropriate conformity attestation arrangements are described in BS EN ISO 9001.Usersseeking assistance in identifying appropriate conformity assessment bodies or schemes may ask BSIto forward their enquiries to the relevant association.It has been assumed in the preparation of this British Standard that the execution of its provisionswill be entrusted to appropriately qualified and experienced people,for whose use it hasbeen produced.This publication can be withdrawn,revised,partially superseded or superseded.Informationregarding the status of this publication can be found in the Standards Catalogue on the BSI website by contacting the Customer Services team.Where websites and webpages have been cited,they are provided for ease of reference and arecorrect at the time of publication.The location of a webpage or website,or its contents,cannotbe guaranteed.Presentational conventionsThe provisions of this standard are presented in roman(i.e.upright)type.Its requirements areexpressed in sentences in which the principal auxiliary verb isshall.Its methods are expressed as aset of instructions,a description,or in sentences in which the principal auxiliary verb isshall.Commentary,explanation and general informative material is presented in smaller italic type,and doesnot constitute a normative element.Where words have alternative spellings,the preferred spelling of the Shorter Oxford EnglishDictionary is used(e.g.organizationrather thanorganisation).THE BRITISH STANDARDS INSTITUTION 2019-ALL RIGHTS RESERVED III