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1、AS 7240.222008 Australian Standard Fire detection and alarm systems Part 22: Smoke-detection equipment for ducts (ISO 7240-22:2007, MOD) AS 7240.222008 This Australian Standard was prepared by Committee FP-002, Fire Detection, Warning, Control and Intercom Systems. It was approved on behalf of the C
2、ouncil of Standards Australia on 27 May 2008. This Standard was published on 5 August 2008. The following are represented on Committee FP-002: Audio Engineering Society Australasian Fire Authorities Council Australian Building Codes Board Australian Chamber of Commerce and Industry Australian Electr
3、ical and Electronic Manufacturers Association Australian Industry Group Australian Institute of Building Surveyors CSIRO Manufacturing and Infrastructure Technology Deafness Forum of Australia Department of Defence (Australia) Fire Protection Association Australia Institute of Security Executives Na
4、tional Electrical and Communications Association National Fire Industry Association Property Council of Australia This Standard was issued in draft form for comment as DR 06575. Standards Australia wishes to acknowledge the participation of the expert individuals that contributed to the development
5、of this Standard through their representation on the Committee and through the public comment period. Keeping Standards up-to-date Keeping Standards up-to-date Australian Standards are living documents that reflect progress in science, technology and systems. To maintain their currency, all Standard
6、s are periodically reviewed, and new editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments that may have been published since the Stand
7、ard was published. Detailed information about Australian Standards, drafts, amendments and new projects can be found by visiting w www.standards.org.auww.standards.org.au Standards Australia welcomes suggestions for improvements, and encourages readers to notify us immediately of any apparent inaccu
8、racies or ambiguities. Contact us via email at mailstandards.org.aumailstandards.org.au, or write to Standards Australia, GPO Box 476, Sydney, NSW 2001. The Standard is downloaded from Standard Sharing AS 7240.222008 Australian Standard Fire detection and alarm systems Part 22: Smoke-detection equi
9、pment for ducts (ISO 7240-22:2007, MOD) First published as AS 7240.222008. COPYRIGHT Standards Australia All rights are reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publ
10、isher. Published by Standards Australia GPO Box 476, Sydney, NSW 2001, Australia ISBN 0 7337 8853 X ii PREFACE This Standard was prepared by the Standards Australia Committee FP-002, Fire Detection, Warning, Control and Intercom Systems. This Standard is an adoption with national modifications and h
11、as been reproduced from ISO 7240-22:2007, Fire detection and fire alarm systems, Part 22: Smoke detection equipment for ducts, and has been varied as indicated to take account of Australian/New Zealand conditions. Variations to ISO 7240-22:2007 are indicated at the appropriate places throughout this
12、 Standard. Strikethrough (example) identifies ISO text, tables and figures which, for the purposes of this Australian Standard, are deleted. Where text, tables or figures are added, each is set in its proper place and identified by shading (example). Added figures are not themselves shaded, but are
13、identified by a shaded border. As this Standard is reproduced from an International Standard, the following applies: (a) Its number does not appear on each page of text and its identity is shown only on the cover and title page. (b) In the source text this part of ISO 7420 should read this part of A
14、S 7240. (c) A full point should be substituted for a comma when referring to a decimal marker. (d) Any French text on figures should be ignored. The term normative and informative are used in this Standard to define the application of the annex to which they apply. A normative annex is an integral p
15、art of a standard, whereas an informative annex is only for information and guidance. The Standard is downloaded from Standard Sharing iii CONTENTS Page 1Scope 1 2Normative references. 1 3Terms and definitions. 2 4General requirements 3 4.1Compliance. 3 4.2Visual alarm indication 3 4.3Connection of
16、 ancillary devices. 3 4.4Monitoring of detachable detectors . 3 4.5Manufacturers adjustments 3 4.6On-site adjustment of response behaviour 3 4.7Marking. 4 4.8Data 4 4.9Requirements for software-controlled smoke-detection equipment for ducts 4 4.10 Radioactive materials 6 5Tests 6 5.1General. 6 5.2Re
17、peatability. 9 5.3Reproducibility 10 5.4Variation in supply parameters 10 5.5Dazzling 11 5.6Dry heat (operational) . 11 5.7Cold (operational) . 12 5.8Damp heat, steady state (operational). 13 5.9Damp heat, steady state (endurance) 14 5.10 Sulfur dioxide, SO2, corrosion (endurance). 15 5.11 Shock (op
18、erational). 16 5.12 Impact (operational) 17 5.13 Vibration, sinusoidal (operational). 18 5.14 Vibration, sinusoidal (endurance) 19 5.15 Air leakage . 20 5.16 Electromagnetic compatibility (EMC) immunity tests (operational). 21 5.17 Fire sensitivity. 22 6Test report . 24 Annex A (normative) Smoke tun
19、nel and fire test room arrangement for response measurements. 25 Annex B (normative) Test aerosol for response threshold value measurements. 26 Annex C (normative) Smoke-measuring instruments 27 Annex D (normative) Apparatus for dazzling test . 31 Annex E (normative) Apparatus for impact test 32 Ann
20、ex F (informative) Air-leakage test apparatus 34 Annex G (normative) Smouldering (pyrolysis) wood fire (TF2) . 35 Annex H (normative) Flaming plastics (polyurethane) fire (TF4). 37 Annex I (informative) Information concerning the construction of the smoke tunnel 39 iv INTRODUCTION Smoke-detection eq
21、uipment for ducts (s.d.e.d.) 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 equipment and can be used as a signal to an air- handling system to prevent the spread of smo
22、ke within the building. A fire-detection and alarm system 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, direct impact, indirect shock and electromagnetic interference
23、. Some tests specified are intended to assess the performance of the s.d.e.d. under such conditions. The performance of s.d.e.d. is assessed from results obtained in specific tests. This part of ISO 7240 is not intended to place any other restrictions on the design and construction of such equipment
24、. The Standard is downloaded from Standard Sharing www.standards.org.au Standards Australia 1 STANDARDS AUSTRALIA Australian Standard Fire detection and alarm systems Part 22: Smoke-detection equipment for ducts (ISO 7240-22:2007, MOD) Any table, figure or text of the international standard that is
25、 struck through is not part of this standard. Any Australian/New Zealand table, figure or text that is added is part of this standard and is identified by shading. 1 Scope This part of ISO 7240 specifies requirements, test methods and performance criteria for smoke-detection equipment for ducts (s.d
26、.e.d.) for use in fire-detection and fire alarm systems installed in buildings; see ISO 7240-1 AS 7240.1. The s.d.e.d. 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. Smoke detectors co
27、mplying with ISO 7240-7 AS 7240.7 or other detectors complying with tests specified in this part of ISO 7240 may be used with the s.d.e.d. A common application for s.d.e.d. is to detect visible smoke, for which detectors using scattered light or transmitted light can be more suitable. However, requi
28、rements for detectors using ionization are also included in this part of ISO 7240 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 part of ISO 7240 can be used
29、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 this part of ISO 7240
30、. 2 Normative references The following referenced documents are indispensable for the application 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. AS 1319, Safety signs fo
31、r the occupational environment ISO 209-1, Wrought aluminium and aluminium alloys Chemical composition and forms of products Part 1: Chemical composition ISO 2919, Radiation protectionSealed radioactive sourcesGeneral requirements and classification ISO 7240-1, Fire detection and fire alarm systems P
32、art 1: General and definition AS 7240.1, Fire detection and fire alarm systems Part 1: General and definition Standards Australia www.standards.org.au 2 ISO 7240-7:2003, Fire detection and fire alarm systems Part 7: Point-type smoke detectors using scattered light, transmitted light or ionization AS
33、 7240.7, Fire detection and fire alarm systems, Part 7: Point-type smoke detectors using scattered light, transmitted light or ionization (ISO 7407:2003, MOD) IEC 60068-1, Environmental testing Part 1: General and guidance AS 60068.1, Environmental testing, Part 1: General and guidance IEC 60068-2-1
34、, Environmental testing Part 2: Tests. Tests A: Cold AS 60068.2.1, Environmental 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) AS 60068.2.6, Environmental
35、testing, Part 2: TestsTest Fc: Vibration (sinusoidal) IEC 60068-2-27:1987, Environmental testing Part 2: Test Ea and guidance: Shock AS 60068.2.27, Environmental testing, Part 2: Test Ea and guidance: Shock IEC 60068-2-42, Environmental testing Part 2-42: Tests. Tests Kc: Sulphur dioxide tests for c
36、ontacts and connections IEC 60068-2-78, Environmental testing Part 2-78: Tests Test Cab: Damp heat, steady state AS 60068.2.78, Environmental testing, Part 2.78: TestsTest Cab: Damp heat, steady state EN 50130-4, Alarm systems Part 4: Electromagnetic compatibility Product family standard: Immunity r
37、equirements for components of fire, intruder and social alarm systems 3 Terms and definitions For the purposes of this document, the terms and definitions given in ISO 7240-1 AS 7240.1 and the following apply. 3.1 response threshold value Ath aerosol concentration in the proximity of the specimen at
38、 the moment that it generates a signal which indicates the presence of smoke, when tested as specified in 5.1.5 NOTE The response threshold value may depend on signal processing in the detector and in the control and indicating equipment. 3.2 smoke-detection equipment for ducts s.d.e.d. apparatus wi
39、th an integral, associated point-type smoke detector or aspirated smoke detector that samples the air moving in a duct and detects smoke in the sample apparatus with an integral or associated point-type smoke detector that samples the air moving in a duct and detects smoke in the sample The Standard
40、 is downloaded from Standard Sharing www.standards.org.au Standards Australia 3 4 General requirements 4.1 Compliance In order to comply with this part of ISO 7240, the s.d.e.d. shall meet the requirements in 4.2 to 4.8, which shall be verified by visual inspection or engineering assessment, shall
41、be tested as described in Clause 5 and shall meet the requirements of these tests. 4.2 Visual alarm indication Each s.d.e.d. shall be provided with a red visual indicator, by which the s.d.e.d. can be identified when the associated detector releases an alarm and which remains illuminated until the a
42、larm condition is reset. Where other conditions of the s.d.e.d. can be visually indicated, they shall be clearly distinguishable from the alarm indication, except when the s.d.e.d. is switched into a service mode. The alarm indicator may be the smoke detector indicator provided the indicator is visi
43、ble when the detector is in-situ as part of the s.d.e.d. The visual indicator shall be visible from a distance of 6 m in an ambient light intensity 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
44、. 4.3 Connection of ancillary devices The s.d.e.d. may provide for connections to ancillary devices (remote indicators, control relays, etc.), but open- or short-circuit failures of these connections shall not prevent the correct operation of the s.d.e.d. 4.4 Monitoring of detachable detectors For d
45、etachable detectors, a means shall be provided for a remote monitoring system (e.g. the 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 exce
46、pt by special means (e.g. the use of a special code or tool) or by breaking or removing a seal. 4.6 On-site adjustment of response behaviour If there is provision for on-site adjustment of the response behaviour of the s.d.e.d., then a) for all of the settings at which the manufacturer claims compli
47、ance with this part of ISO 7240, the s.d.e.d. shall comply with the requirements of this part of ISO 7240 and access to the adjustment means shall be possible only by the use of a code or special tool or by removing the s.d.e.d. from its base or mounting; b) any setting(s) at which the manufacturer
48、does not claim compliance with this part of ISO 7240 shall be accessible only by the use of a code or special tool, and it shall be clearly marked on the s.d.e.d. or in the associated data that if these setting(s) are used, the s.d.e.d. does not comply with this part of ISO 7240. These adjustments m
49、ay be carried out at the s.d.e.d., the detector or the control and indicating equipment. Standards Australia www.standards.org.au 4 4.7 Marking Each s.d.e.d. shall be clearly marked with the following information: a) number of this part of ISO 7240 (i.e. ISO 7240-22); b) name or trademark of the manufacturer or supplier; c) model designation (type or number); d) wiring-terminal designations; e) some mark(s) or code(s) (e.g. serial number or batch code),