ISO 15779-2011 Condensed aerosol fire extinguishing systems - Requirements and test methods for components and system design installation and maintenance - Gene.pdf

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1、Condensed aerosol fire extinguishing systems Requirements and test methods for components and system design, installation and maintenance General requirements Systmes dextinction dincendie utilisant des arosols Exigences et mthodes dessai pour la conception des composants et des systmes, linstallati

2、on et lentretien Exigences gnrales ISO 2011 Reference number ISO 15779:2011(E) First edition 2011-11-15 ISO 15779 INTERNATIONAL STANDARDISO 15779:2011(E)COPYRIGHT PROTECTED DOCUMENT ISO 2011 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in

3、 any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22

4、 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2011 All rights reservedISO 15779:2011(E) ISO 2011 All rights reserved iii Contents Page Foreword . v Introduction .vi 1 Scope 1 2 Normative references . 1 3 Terms and definitions . 1 4 Use and limitations . 5 4.1 Gen

5、eral . 5 4.2 Aerosol agent description . 5 4.3 Application 6 4.4 Limitation of use 6 4.5 Electrostatic discharge 7 4.6 Potentially explosive atmosphere . 7 4.7 Temperature limitations . 7 4.8 Compatibility with other extinguishants . 7 4.9 Environmental 7 5 Safety 7 5.1 General . 7 5.2 Toxicity . 8

6、5.3 Reduced visibility 9 5.4 Turbulence . 9 5.5 Thermal hazards 9 5.6 Safety precautions 9 5.7 Electrical hazards 10 5.8 Electrical earthing . 11 5.9 Electrostatic discharge 11 6 Extinguishant . 11 6.1 General . 11 6.2 Design application density requirements . 11 6.3 Aerosol generator performance re

7、quirements 12 6.4 Marking .14 7 Specifications, plans and approvals 14 7.1 Specifications .14 7.2 Enclosure .14 7.3 Total flooding quantity .15 7.4 Design application density adjustment .16 7.5 Unit size and quantity of aerosol generators .17 7.6 Operating conditions 18 7.7 Duration of protection 18

8、 7.8 System discharge 19 7.9 Detection, actuation and control systems 19 8 Commissioning and acceptance .21 8.1 General .21 8.2 Tests 21 9 Inspection, maintenance, testing and training 25 9.1 General .25 9.2 Inspection 25 9.3 Maintenance 26 9.4 Training 27 Annex A (normative) Documentation requireme

9、nts 28 Annex B (informative) Toxicity and visibility testing.29ISO 15779:2011(E)iv ISO 2011 All rights reserved Annex C (normative) Test methods .35 Annex D (normative) Extinguishing application density/Coverage test procedure .45 Bibliography .72Foreword ISO (the International Organization for Stan

10、dardization) is a 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

11、 to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International S

12、tandards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an

13、International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 15

14、779 was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire fighting, Subcommittee SC 8, Gaseous media and firefighting systems using gas. ISO 15779:2011(E) ISO 2011 All rights reserved vIntroduction Firefighting systems covered in this International Standard are design

15、ed to provide a supply of condensed aerosol extinguishing medium for the extinction of fire. Several different methods of supplying condensed aerosol extinguishant to, and applying it at, the required point of discharge for fire extinction have been developed in recent years, and there is a need for

16、 dissemination of information on established systems and methods. This International Standard has been prepared to meet this need. The requirements of this International Standard are made in the light of the best technical data known to the working group at the time of writing but, since a wide fiel

17、d is covered, it has been impracticable to consider every possible factor or circumstance that might affect implementation of the recommendations. It has been assumed in the preparation of this International Standard that the execution of its provisions is entrusted to people appropriately qualified

18、 and experienced in the specification, design, installation, testing, approval, inspection, operation and maintenance of systems and equipment, for whose guidance it has been prepared, and who can be expected to exercise a duty of care to avoid unnecessary release of extinguishant. It is important t

19、hat the fire protection of a building or plant be considered as a whole. Condensed aerosol extinguishing systems form only a part, though an important part, of the available facilities, but it should not be assumed that their adoption necessarily removes the need to consider supplementary measures,

20、such as the provision of portable fire extinguishers or other mobile appliances for first aid or emergency use, or to deal with special hazards. Condensed aerosol extinguishants have for many years been a recognized effective medium for the extinction of flammable liquid fires and fires in the prese

21、nce of electrical and ordinary Class A hazards, but it should not be forgotten, in the planning of comprehensive schemes, that there may be hazards for which these mediums are not suitable, or that in certain circumstances or situations there may be dangers in their use requiring special precautions

22、. Advice on these matters can be obtained from the appropriate manufacturer of the extinguishant and/or the extinguishing system. Information may also be sought from the appropriate fire authority, the health and safety authorities and insurers. In addition, reference should be made as necessary to

23、other national standards and statutory regulations of the particular country. It is essential that firefighting equipment be carefully maintained to ensure instant readiness when required. Routine maintenance is liable to be overlooked or given insufficient attention by the owner of the system. It i

24、s, however, neglected at peril to the lives of occupants of the premises and at the risk of crippling financial loss. The importance of maintenance cannot be too highly emphasized. Installation and maintenance should only be carried out by qualified personnel. Inspection should include an evaluation

25、 that the extinguishing system continues to provide adequate protection for the risk (protected zones as well as state of the art can change over time). Annex D deals with the tests for determination of the extinguishing application density and system performance and they are designed in such a way

26、to allow individual installers to use his or her system and carry out all of the extinguishing tests. The tests presented in Annex D have been established to evaluate application densities suitable for the protection of Class A fires with wood crib fire tests and plastic fuel hazards such as may be

27、encountered in information technology, telecommunications and process control facilities, as well as Class B fires with heptane pan and heptane can test fires in an enclosure of 100 m 3 . ISO 15779:2011(E)vi ISO 2011 All rights reservedINTERNATIONAL STANDARD ISO 15779:2011(E) Condensed aerosol fire

28、extinguishing systems Requirements and test methods for components and system design, installation and maintenance General requirements 1 Scope This International Standard specifies requirements and test methods for components and gives recommendations for the design, installation, testing, maintena

29、nce and safety of condensed aerosol firefighting systems in buildings, plants or other structures, and the characteristics of the extinguishants and types of fire for which they are a suitable extinguishing medium. It covers total flooding systems primarily related to buildings, plant and other spec

30、ific applications, utilizing electrically non-conducting condensed aerosol fire extinguishants for which there are sufficient data currently available to enable validation of performance characteristics by an appropriate independent authority. Local applications of condensed aerosol extinguishing sy

31、stems are not covered by this International Standard. Any local applications require a pre-engineered and pre-designed system which has been tested and approved for a specific application by a relevant authority. 2 Normative references The following referenced documents are indispensable for the app

32、lication 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 3941, Classification of fires EN 60068-2-6, Environmental testing Part 2-6: Tests Test Fc: Vibration (sinusoi

33、dal) EN 60068-2-30, Environmental testing Part 2-30: Tests Test Db and guidance: Damp heat, cyclic (12h + 12h cycle) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 aerosol extinguishing agent condensed aerosol extinguishing medium consisting

34、 of finely divided solid particles, generally in the order of magnitude of microns in diameter suspended in gas generated and distributed by a combustion process of a solid aerosol-forming compound 3.2 aerosol generator non-pressurized container which, when activated, generates a condensed aerosol e

35、xtinguishing agent NOTE The pressurized container system includes the mounting bracket(s). 3.3 aggressive environment environment including the following or as defined by the appropriate authority: a) exterior situations exposed to the sun, ultraviolet radiation, wind, rain, or salt spray; b) corros

36、ive atmospheres; ISO 2011 All rights reserved 1c) abnormally dusty or moisture-laden atmospheres; d) extreme temperatures; e) vibrations and shocks 3.4 approved acceptable to a relevant authority NOTE In determining the acceptability of installations or procedures, equipment or materials, the author

37、ity may base acceptance on compliance with the appropriate standards. 3.5 authority organization, office, or individual responsible for approving equipment, installations or procedures 3.6 automatic performing a function without the necessity of intentional human intervention 3.7 automatic/manual sw

38、itch means of converting the system from automatic to manual actuation 3.8 electrical clearance unobstructed air distance between the aerosol generator components and unenclosed or uninsulated live electrical components not at ground potential 3.9 thermal clearance air distance between a condensed a

39、erosol generator and any structure or components sensitive to the temperature developed by the generator 3.10 competent person designated person, suitably trained, qualified by knowledge and practical experience and with the necessary instructions, to enable the required tests and examinations to be

40、 carried out 3.11 coolant heat-absorbing medium or process 3.12 design application density extinguishing application density of extinguishant, including a safety factor, required for system design purposes NOTE 1 The design application density may also be referred to as the design factor. NOTE 2 Mea

41、sured in g/m 3 . 3.13 discharge time time from the generator activation until the end of its discharge/extinguishing application density NOTE Measured in g/m 3 . 3.14 extinguishant condensed aerosol extinguishing agent ISO 15779:2011(E)2 ISO 2011 All rights reserved3.15 extinguishing application den

42、sity effective minimum mass of discharged extinguishant per unit of enclosure volume required to extinguish fire involving a specific fuel under defined experimental conditions, using a specific aerosol generator type and size, excluding any safety factor NOTE Measured in g/m 3 . 3.16 family of cond

43、ensed aerosol generators range of generators designed with the same solid compound, the same kind of cooling device, discharge outlet, ignition device, layout and internal/external architecture (varying of mass of solid compound) 3.17 effective mass mass of discharged extinguishant required to achie

44、ve the design application density within the protected volume within the specified discharge time 3.18 hold time period of time during which an extinguishant is required to maintain at least the extinguishing application density to maintain even distribution throughout protected volume 3.19 hot work

45、 grinding, welding, thermal or oxygen cutting or heating and other related heat-producing or spark-producing operations 3.20 ignition device device which is able to ignite the solid aerosol-forming compound 3.21 inspection visual examination to give reasonable assurance that the extinguishing system

46、 is fully charged and operable and has not been activated or tampered with, and that there is no obvious physical damage or condition to prevent operation 3.22 location drawing layout diagram of protected volume clearly indicating the as-installed location of all aerosol generators, controls, mainte

47、nance isolate switch (lock-off devices), and associated components of the systems 3.23 lock-off device lockable manual shut-off device that prevents the electrical actuation of aerosol generators NOTE 1 The lock-off device may be in the form of a lockable system isolate switch. NOTE 2 The actuation

48、of this device provides an indication of system isolation. NOTE 3 The intent is to prevent the discharge of agent into the hazard area when the lock-off device is activated. 3.24 lowest observed adverse effect level LOAEL lowest agent factor at which an adverse toxicological or physiological effect

49、has been observed 3.25 listed systems or components that are included in a list published by a listing authority organization ISO 15779:2011(E) ISO 2011 All rights reserved 33.26 listing organization internationally recognized fire protection system or components test and certification organization NOTE Examples of these organizations are: Factory Mutual (FM); Underwriters Laboratories (UL/ULC); Loss Prevention Certification Board (LPCB); VdS Schadenverhtung; All-Russia Scientific Research Institute for Fire Protection (VNIIPO