BS 9251:2021 pdf download – Fire sprinkler systems for domestic and residential occupancies — Code of practice COMMENTARY ON 5.4 BS 5306-0:2020, Clause 15 gives guidance on the use of sprinkler protection in the presence of electricalequipment and concludes it is generally safe to do so. Sprinkler protection should be provided in all parts of the premises, however, sprinkler protectionmay be omitted from the following areas unless it is required by a fire strategy or risk assessment:NOTE Where a risk assessment is carried out,it needs to take into account presence of fuel load (e.g.linen), presence of potential ignition sources (e.g. immersion heater) and consequence (e.g. impact upon fire protection tothe building or escape routes). a) bathrooms and shower rooms with a floor area less than 5 m2 , with linings conforming to BSEN 13501-1:2018,Class A1,A2-s3, d2 and B-s3, d2, and which are not prepared for whitegoods, such as washing machines, dryers, electric showers or water heaters; b) enclosed staircases containing only materials conforming to BS EN 13501-1:2018, Class B-s3 or better for construction materials and B(fl) or better for flooring, including sub categories such as d0, d1, d2 for construction materials and s1 and s2 for flooring, surface spread of flame andconstructed as a fire-resistant separation; c)ceiling voids; d)enclosed vertical shafts (e.g.lifts or service shafts) containing only materials conforming to BS EN 13501-1:2018,Class B-s3 or better for construction materials and B(fl) or better for flooring (including sub categories such as d0, d1, d2 for construction materials and s1 and s2 forflooring), surface spread of flame and constructed as a fire-resistant separation; e) cupboards and pantries with a floor area of less than 2 m2 or where the least dimension does not exceed 1 m which are not prepared for consumer units or electrical equipment ( excluding asingle light); f)uninhabited loft /roof voids; g)water closet (WC) with a floor area less than 5 m2, with linings conforming to BS EN 13501-1:2018,Class A1,A2-s3, d2 and B-s3, d2, and which are not prepared for whitegoods,such as washing machines, dryers,electric showers or water heaters; h) attached buildings, such as garages and plant rooms without direct access from within the protected building; i)crawlspaces; and jexternal balconies permanently open to the outside. 5.5 Classification of residential and non-residential occupancies COMMENTARY ON 5.5 Iln some parts of the building, residential sprinklers might not provide adequate protection.Therefore,the nature of occupancies needs to be determined and the type of...
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