ISO 7240-22:2017
(Main)Fire detection and alarm systems — Part 22: Smoke-detection equipment for ducts
Fire detection and alarm systems — Part 22: Smoke-detection equipment for ducts
ISO 7240-22:2017 specifies requirements, test methods and performance criteria for smoke-detection equipment for ducts (SDED) for use in fire detection and alarm systems installed in buildings (see ISO 7240‑1). The SDED samples the air from a duct and detects smoke in the sample. NOTE 1 A common method of operation is to use differential pressure arising from airflow in the duct. The SDED can use smoke detectors complying with ISO 7240‑7 or other detectors complying with tests specified in ISO 7240-22:2017. A common application for SDED is to detect visible smoke, for which detectors using scattered light or transmitted light can be more suitable. However, requirements for detectors using ionization are also included in ISO 7240-22:2017 for use in applications where detection of less visible fire aerosols is desired. For the testing of other types of smoke detectors or smoke detectors working on different principles, ISO 7240-22:2017 can be used for guidance. Smoke detectors with special characteristics, developed for specific risks, are not covered. NOTE 2 Certain types of detectors contain radioactive materials. The national requirements for radiation protection differ from country to country and are not specified in ISO 7240-22:2017.
Systèmes de détection et d'alarme d'incendie — Partie 22: Équipement de détection des fumées dans les conduits
General Information
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Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 7240-22
Second edition
2017-09
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
Reference number
©
ISO 2017
© ISO 2017, Published in Switzerland
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Contents Page
Foreword .vi
Introduction .vii
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Requirements . 2
4.1 Compliance . 2
4.2 Visual alarm indication . 2
4.3 Connection of ancillary devices . 2
4.4 Monitoring of detachable detectors . 3
4.5 Manufacturer's adjustments . 3
4.6 On-site adjustment of response behaviour . 3
4.7 Requirements for software-controlled smoke-detection equipment for ducts . 3
4.7.1 General. 3
4.7.2 Software design. 3
4.7.3 Storage of programs and data . 3
5 Tests . 4
5.1 General . 4
5.1.1 Atmospheric conditions for tests. 4
5.1.2 Mounting arrangements . 4
5.1.3 Operating conditions for tests . 4
5.1.4 Tolerances . 4
5.1.5 Response threshold value . 4
5.1.6 Provision for tests . 5
5.1.7 Test schedule . 6
5.1.8 Test report . 6
5.2 Repeatability . 6
5.2.1 Object of test . 6
5.2.2 Test procedure . 6
5.2.3 Requirements . 7
5.3 Reproducibility . 7
5.3.1 Object of test . 7
5.3.2 Test procedure . 7
5.3.3 Requirements . 7
5.4 Variation in supply parameters . 7
5.4.1 Object of test . 7
5.4.2 Test procedure . 8
5.4.3 Requirements . 8
5.5 Dazzling . 8
5.5.1 Object of test . 8
5.5.2 Test procedure . 8
5.5.3 Requirements . 9
5.6 Dry heat (operational) . 9
5.6.1 Object of test . 9
5.6.2 Test procedure . 9
5.6.3 Requirements .10
5.7 Cold (operational) .10
5.7.1 Object of test .10
5.7.2 Test procedure .10
5.7.3 Requirements .11
5.8 Damp heat, steady-state (operational).11
5.8.1 Object of test .11
5.8.2 Test procedure .11
5.8.3 Requirements .11
5.9 Damp heat, steady-state (endurance) .12
5.9.1 Object of test .12
5.9.2 Test procedure .12
5.9.3 Requirements .12
5.10 Sulfur dioxide, SO , corrosion (endurance) .13
5.10.1 Object of test .13
5.10.2 Test procedure .13
5.10.3 Requirements .13
5.11 Shock (operational) .14
5.11.1 Object of test .14
5.11.2 Test procedure .14
5.11.3 Requirements .14
5.12 Impact (operational) .15
5.12.1 Object of test .15
5.12.2 Test procedure .15
5.12.3 Requirements .15
5.13 Vibration, sinusoidal (operational) .16
5.13.1 Object of test .16
5.13.2 Test procedure .
...
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