# ISO 7240-22:2007 — Withdrawn and superseded ISO standards For ISO 7240-22:2007, item title is Fire detection and alarm systems — Part 22: Smoke-detection equipment for ducts; status code is 9599; successor is ISO/NP 7240-22 | ISO 7240-22:2017; withdrawn / published date is 2007-05-07, recorded from its source on 2026-08-05. - **Identifier:** ISO 7240-22:2007 _(verified: appears in the quote below)_ - **Item title:** Fire detection and alarm systems — Part 22: Smoke-detection equipment for ducts _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO/NP 7240-22 | ISO 7240-22:2017 - **Withdrawn / published date:** 2007-05-07 _(verified: appears in the quote below)_ ## What the source says > 40178,IS,,ISO 7240-22:2007,Fire detection and alarm systems — Part 22: Smoke-detection equipment for ducts,Systèmes de détection et d'alarme d'incendie — Partie 22: Équipement de détection des fumées dans les conduits,2007-05-07,1,['13.220.20'],ISO/TC 21/SC 3,9599,,"[50711,68991]",['en'],41,"

ISO 7240-22:2007 specifies requirements, test methods and performance criteria for smoke detection equipment for ducts (s.d.e.d.) for use in fire-detection and fire alarm systems installed in buildings.

The s.d.e.d. samples the air from a duct and detects smoke in the sample. A common method of operation is to use differential pressure arising from airflow in the duct.

The s.d.e.d. can use ## Source - https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv Last verified: 2026-08-05. Review by: 2027-02-01. Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).