1、 ISO 2017 Fire detection and alarm systems Part 22: Smoke-detection equipment for ducts Systmes de dtection et dalarme dincendie Partie 22: quipement de dtection des fumes dans les conduits INTERNATIONAL STANDARD ISO 7240-22 Second edition 2017-09 Reference number ISO 7240-22:2017(E) ISO 7240-22:201
2、7(E)ii ISO 2017 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or p
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4、x +41 22 749 09 47 copyrightiso.org www.iso.org ISO 7240-22:2017(E)Foreword vi Introduction vii 1 Scope . 1 2 Normative references 1 3 T erms 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 detec
5、tors 3 4.5 Manufacturers 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 condition
6、s 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、 . 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
8、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 ISO 2017 All rights reserved iii Conte
9、nts Page ISO 7240-22:2017(E)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 2 , corrosion (endurance) 13 5.10.1 Object of test .13 5.10.2 Test procedure 13 5.10.3 R
10、equirements 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 T
11、est procedure 16 5.13.3 Requirements 17 5.14 Vibration, sinusoidal (endurance) 17 5.14.1 Object of test .17 5.14.2 Test procedure 17 5.14.3 Requirements 18 5.15 Air leakage .18 5.15.1 Object of test .18 5.15.2 Test procedure 18 5.15.3 Requirements 18 5.16 Electromagnetic compatibility (EMC) immunity
12、 tests (operational) .19 5.16.1 Object of test .19 5.16.2 Test procedure 19 5.16.3 Requirements 19 5.17 Fire sensitivity 20 5.17.1 Object of test .20 5.17.2 Test procedure 20 5.17.3 Requirements 21 6 Test report 21 7 Marking .22 8 Data .22 8.1 Hardware documentation 22 8.2 Software documentation .23
13、 Annex A (normative) Smok e tunnel and fir e t est r oom arr angement for response measurements 24 Annex B (normative) Test aerosol for response threshold value measurements 25 Annex C (normative) Smoke-measuring instruments .26 Annex D (normative) Apparatus for dazzling test .30 Annex E (normative)
14、 Apparatus for impact test 31 Annex F (informative) Air-leakage test apparatus 33 Annex G (normative) Rapid smouldering (p yr ol y sis) w ood fir e (TF2)34 Annex H (normative) Open plastics (pol yur ethane) fir e (TF4) .37 iv ISO 2017 All rights reserved ISO 7240-22:2017(E)Annex I (informative) Info
15、rmation concerning the construction of the smoke tunnel 39 Annex J (informative) Information concerning the construction of the measuring ionization chamber .42 Bibliography .44 ISO 2017 All rights reserved v ISO 7240-22:2017(E) Foreword ISO (the International Organization for Standardization) is a
16、worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented
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18、is document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC D
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21、ature of standards, the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html.This docu
22、ment was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire fighting, Subcommittee SC 3, Fire detection and alarm systems. This second edition cancels and replaces the first edition (ISO 7240-22:2007), which has been technically revised. The main changes compared to th
23、e previous edition are as follows: in 5.16 (electromagnetic compatibility immunity tests), EN 50130-4 has been replaced by IEC 62599-2; marking has been moved to a new Clause 7; data and software requirements have been moved to Clause 8. A list of all parts in the ISO 7240 series can be found in the
24、 ISO website.vi ISO 2017 All rights reserved ISO 7240-22:2017(E) Introduction Smoke-detection equipment for ducts (SDED) is used as part of a fire detection system to sample the environment within air ducts of a building. Detection of smoke releases a signal to the connected control and indicating e
25、quipment and can be used as a signal to an air-handling system to prevent the spread of smoke within the building. SDED is required to function satisfactorily not only in the event of a fire, but also during and after exposure to conditions likely to be met in practice such as corrosion, vibration,
26、direct impact, indirect shock and electromagnetic interference. Some tests specified are intended to assess the performance of the SDED under such conditions. The performance of SDED is assessed from results obtained in specific tests. This document is not intended to place any other restrictions on
27、 the design and construction of such equipment. ISO 2017 All rights reserved vii Fire detection and alarm systems Part 22: Smoke-detection equipment for ducts 1 Scope This document specifies requirements, test methods and performance criteria for smoke-detection equipment for ducts (SDED) for use in
28、 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 7
29、240-7 or other detectors complying with tests specified in this document. 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 this docu
30、ment 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, this document can be used for guidance. Smoke detectors with special characteristics, developed for specific ri
31、sks, 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 this document. 2 Normative references The following documents are referred to in the text in such a way th
32、at some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 209, Aluminium and aluminium alloys Chemical composition ISO
33、7240-1, Fire detection and alarm systems Part 1: General and definitions ISO 7240-7:2011, Fire detection and alarm systems Part 7: Point-type smoke detectors using scattered light, transmitted light or ionization IEC 60068-1, Environmental testing Part 1: General and guidance IEC 60068-2-1, Environm
34、ental testing Part 2: Tests. Tests A: Cold IEC 60068-2-2, Environmental testing Part 2: Tests. Tests B: Dry heat IEC 60068-2-6, Environmental testing Part 2: Tests Test Fc: Vibration (sinusoidal) IEC 60068-2-27, Environmental testing Part 2: Test Ea and guidance: Shock IEC 60068-2-42, Environmental
35、testing Part 2-42: Tests. Tests Kc: Sulphur dioxide tests for contacts and connections IEC 60068-2-78, Environmental testing Part 2-78: Tests Test Cab: Damp heat, steady state INTERNATIONAL ST ANDARD ISO 7240-22:2017(E) ISO 2017 All rights reserved 1 ISO 7240-22:2017(E) IEC 62599-2, Alarm systems Pa
36、rt 2: Electromagnetic compatibility Immunity requirements for components of fire and security alarm systems 3 T erms a nd definiti ons For the purposes of this document, the terms and definitions given in ISO 7240-1 and the following apply. ISO and IEC maintain terminological databases for use in st
37、andardization at the following addresses: IEC Electropedia: available at http:/ /www.electropedia.org/ ISO Online browsing platform: available at http:/ /www.iso.org/obp 3.1 response threshold value A th aerosol density in the proximity of the specimen at the moment that it generates an alarm signal
38、, when tested as specified in 5.1.5 Note 1 to entry: The response threshold value may depend on signal processing in the detector and in the control and indicating equipment. 4 Requirements 4.1 Compliance In order to comply with this document, the SDED shall: a) meet the requirements of Clause 4, wh
39、ich shall be verified by visual inspection or engineering assessment; b) be tested as specified in Clause 5, and shall meet the requirements of the tests; c) meet the requirements of Clauses 7 and 8, which shall be verified by visual inspection. 4.2 Visual alarm indication 4.2.1 Each SDED shall be p
40、rovided with a red visual indicator, by which the SDED can be identified when the associated detector releases an alarm and which remains illuminated until the alarm condition is reset. Where other conditions of the SDED can be visually indicated, they shall be clearly distinguishable from the alarm
41、 indication, except when the SDED is switched into a service mode. The alarm indicator may be the smoke detector indicator provided the indicator is visible when the detector is in situ as part of the SDED. 4.2.2 The visual indicator shall be visible from a distance of 6 m in an ambient light intens
42、ity up to 500 lx at an angle of up to a) 5 from the axis of the detector in any direction, and b) 45 from the axis of the detector in at least one direction. 4.3 Connection of ancillary devices The SDED may provide for connections to ancillary devices (remote indicators, control relays, etc.), but o
43、pen- or short-circuit failures of these connections shall not prevent the correct operation of the SDED.2 ISO 2017 All rights reserved ISO 7240-22:2017(E) 4.4 Monitoring of detachable detectors For detachable detectors, a means shall be provided for a remote monitoring system (e.g. the fire detectio
44、n control and indicating equipment) to detect the removal of the head from the base, in order to give a fault signal. 4.5 Manufacturers adjustments It shall not be possible to change the manufacturers settings except by special means (e.g. the use of a special code or tool) or by breaking or removin
45、g a seal. 4.6 On-site adjustment of response behaviour 4.6.1 If there is provision for on-site adjustment of the response behaviour of the SDED, then a) for all of the settings at which the manufacturer claims compliance with this document, the SDED shall comply with the requirements of this documen
46、t and access to the adjustment means shall be possible only by the use of a code or special tool or by removing the SDED from its base or mounting; b) any setting(s) at which the manufacturer does not claim compliance with this document shall be accessible only by the use of a code or special tool,
47、and it shall be clearly marked on the SDED or in the associated data that if these setting(s) are used, the SDED does not comply with this document. 4.6.2 These adjustments may be carried out at the SDED, the detector or the control and indicating equipment. 4.7 Requirements for software-controlled
48、smoke-detection equipment for ducts 4.7.1 General The requirements of 4.7.2 and 4.7.3 shall be met for SDED that rely on software control in order to fulfil the requirements of this document. 4.7.2 Software design In order to ensure the reliability of the SDED, the following requirements for softwar
49、e design shall apply. a) The software shall have a modular structure. b) The design of the interfaces for manually and automatically generated data shall not permit invalid data to cause an error in the program operation. c) The software shall be designed to avoid the occurrence of deadlock of the program flow. 4.7.3 Storage of programs and data 4.7.3.1 The program necessary to comply with this document and any preset data, such as manufacturers settings, shall be held in non-volatile memory. Writin
