145Automatic smoke detection and alarm systems

145 Automatic smoke detection and alarm systems (1) This regulation applies to a Class 1 or 3 building or a Class 4 part of a building or a sole‑occupancy unit contained in a Class 2 building or a Class 9a building that is a residential care building that was constructed, or for which a building permit was granted, before 1 August 1997. (2) A Class 1 building must have installed throughout the building— Reg. 145(2)(a) amended by S.R. Nos 40/2019 reg. 11(1), 102/2023 reg. 8(1). (a) a smoke alarm system that complies with the deemed-to-satisfy provisions contained in clause H3D6 of the BCA Volume Two; or (b) an approved smoke alarm system powered from a mains electricity supply, if there is such a supply to the building. Reg. 145(3) amended by S.R. Nos 40/2019 reg. 11(2), 102/2023 reg. 8(2). (3) A building, other than a Class 1 building, must have installed throughout the building one of the following as required by Specification 20 of the BCA Volume One— Reg. 145(3)(a) substituted by S.R. No. 102/2023 reg. 8(3). (a) a smoke detection system that complies with clause S20C3 of Specification 20 of the BCA Volume One; Reg. 145(3)(b) amended by S.R. No. 40/2019 reg. 11(3), substituted by S.R. No. 102/2023 reg. 8(4). (b) a smoke detection system that complies with clause S20C4 of Specification 20 of the BCA Volume One; Reg. 145(3)(c) inserted by S.R. No. 40/2019 reg. 11(4), substituted by S.R. No. 102/2023 reg. 8(5). (c) a combination of a smoke alarm system and a smoke detection system that complies with clause S20C5 of Specification 20 of the BCA Volume One. (4) This regulation must be complied with by— (a) in the case of a sole‑occupancy unit contained in a Class 2 building, the owner of the sole‑occupancy unit; or (b) in any other case, the owner of the building. (5) Subregulation (3) does not apply to a building in which there is installed throughout the building an approved smoke detection and alarm system that consists of either one or both of the following— (a) an approved smoke alarm system powered from a mains electricity supply; (b) an approved smoke detection system. (6) This regulation does not apply to a Class 1a or Class 4 part of a building or a sole‑occupancy unit contained in a Class 2 building that complies with regulation 707 of the Building Interim Regulations 2017 as in force immediately before its revocation. (7) This regulation does not apply to a Class 1b or 3 building or a Class 9a building that is a residential care building that complies with regulation 709 of the Building Interim Regulations 2017 as in force immediately before its revocation.