1、BRITISH STANDARDBS EN 15004-3:2008Fixed firefighting systems Gas extinguishing systems Part 3: Physical properties and system design of gas extinguishing systems for HCFC Blend A extinguishantICS 13.220.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49
2、g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 15004-3:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 2008November BSI 2008ISBN 978 0 580 59944 6National forewordThis Bri
3、tish Standard is the UK implementation of EN 15004-3:2008. It supersedes BS ISO 14520-6:2006 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee FSH/18, Fixed firefighting systems, to Subcommittee FSH/18/6, Gaseous extinguishing media and systems.A list of
4、 organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obl
5、igations.Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 15004-3June 2008ICS 13.220.20English VersionFixed firefighting systems - Gas extinguishing systems - Part 3:Physical properties and system design of gas extinguishingsystems for HCFC
6、 Blend A extinguishant (ISO 14520-6:2006,modified)Installations fixes de lutte contre lincendie - Installationsdextinction gaz - Partie 3 : Proprits physiques etconception des systmes pour agent extincteur HCFC,mlange A (ISO 14520-6:2006, modifie)Ortsfeste Brandbekmpfungsanlagen - Lschanlagen mitgas
7、frmigen Lschmitteln - Teil 3: PhysikalischeEigenschaften und Anlagenauslegung fr FeuerlschmittelHCFC/A (ISO 14520-6:2006, modifiziert)This European Standard was approved by CEN on 26 April 2008.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions f
8、or giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the CEN Management Centre or to any CEN member.This European Standard exists in three official
9、 versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgi
10、um, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STA
11、NDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 15004-3:2008: EEN 15004-3:2008 (E) 2 Contents Page Fo
12、reword3 Foreword of ISO 14520-6:2006 5 1 Scope 6 2 Normative references 6 3 Terms and definitions .6 4 Characteristics and uses 6 4.1 General6 4.2 Use of HCFC Blend A systems.7 5 Safety of personnel9 6 System design10 6.1 Fill density 10 6.2 Superpressurization 11 6.3 Extinguishant quantity 11 BS EN
13、 15004-3:2008EN 15004-3:2008 (E) 3 Foreword This document (EN 15004-3:2008) has been prepared by Technical Committee CEN/TC 191 “Fixed firefighting systems”, the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publication of an
14、identical text or by endorsement, at the latest by December 2008, and conflicting national standards shall be withdrawn at the latest by December 2008. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not b
15、e held responsible for identifying any or all such patent rights. The text of the International Standard ISO 14520-6:2006 from Technical Committee ISO/TC 21 “Equipment for fire protection and fire fighting“ of the International Organization for Standardization (ISO) has been taken over as a European
16、 Standard by Technical Committee CEN/TC 191 “Fixed firefighting systems“, the secretariat of which is held by BSI, with common modifications which are indicated by a straight line in the margin of the text. This European Standard will consist of the following parts, under the general title Fixed fir
17、efighting systems Gas extinguishing systems: Part 1: Design, installation and maintenance (ISO 14520-1, modified) Part 2: Physical properties and system design of gas extinguishing systems for FK-5-1-12 extinguishant (ISO 14520-5, modified) Part 3: Physical properties and system design of gas exting
18、uishing systems for HCFC Blend A extinguishant (ISO 14520-6, modified) Part 4: Physical properties and system design of gas extinguishing systems for HFC 125 extinguishant (ISO 14520-8, modified) Part 5: Physical properties and system design of gas extinguishing systems for HFC 227ea extinguishant (
19、ISO 14520-9, modified) Part 6: Physical properties and system design of gas extinguishing systems for HFC 23 extinguishant (ISO 14520-10, modified) Part 7: Physical properties and system design of gas extinguishing systems for IG-01 extinguishant (ISO 14520-12, modified) Part 8: Physical properties
20、and system design of gas extinguishing systems for IG-100 extinguishant (ISO 14520-13, modified) Part 9: Physical properties and system design of gas extinguishing systems for IG-55 extinguishant (ISO 14520-14, modified) Part 10: Physical properties and system design of gas extinguishing systems for
21、 IG-541 extinguishant (ISO 14520-15, modified) The International Standards ISO 14520-2 and ISO 14520-11, which dealt with CF3I and HFC 236fa extinguishants, respectively, have not been implemented by CEN, as CF3I extinguishant is only valid for local BS EN 15004-3:2008EN 15004-3:2008 (E) 4 applicati
22、on and HFC 236fa extinguishant is only applicable for portable fire extinguishers and local application, respectively, which is not covered by the scope. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this Eur
23、opean Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the Unite
24、d Kingdom. BS EN 15004-3:2008EN 15004-3:2008 (E) 5 Foreword of ISO 14520-6:2006 ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO techn
25、ical committees. Each member body interested in a subject for which a technical committee has been established has the right 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
26、with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards 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 In
27、ternational Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an 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
28、may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 14520-6 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. This
29、second edition cancels and replaces the first edition (ISO 14520-6:2000), which has been technically revised. ISO 14520 consists of the following parts, under the general title Gaseous media fire extinguishing systems Physical properties and system design: Part 1: General requirements Part 2: CF3I e
30、xtinguishant Part 5: FK-5-1-12 extinguishant Part 6: HCFC Blend A extinguishant Part 8: HFC 125 extinguishant Part 9: HFC 227ea extinguishant Part 10: HFC 23 extinguishant Part 11: HFC 236fa extinguishant Part 12 IG-01 extinguishant Part 13: IG-100 extinguishant Part 14: IG-55 extinguishant Part 15:
31、 IG-541 extinguishant Parts 3, 4 and 7, which dealt with FC-2-1-8, FC-3-1-10 and HCFC 124 extinguishants, respectively, have been withdrawn, as these types are no longer manufactured. BS EN 15004-3:2008EN 15004-3:2008 (E) 6 1 Scope This document gives specific requirements for gaseous fire-extinguis
32、hing systems, with respect to the HCFC Blend A extinguishant. It includes details of physical properties, specification, usage and safety aspects and is applicable to systems operating at nominal pressures of 25 bar and 42 bar with nitrogen propellant. This does not preclude the use of other systems
33、. 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. EN 15004-1:2008, Fixed f
34、irefighting systems Gas extinguishing systems - Design, installation and maintenance (ISO 14520-1, modified) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 15004-1:2008 apply. 4 Characteristics and uses 4.1 General Extinguishant HCFC Blend A shall co
35、mply with the specification according to Table 1. The tolerances of its components shall be in accordance with Table 2. HCFC Blend A is a colourless, electrically non-conductive gas with a citrus-like odour and a density approximately 11 times that of air. The physical properties are given in Table
36、3. HCFC Blend A extinguishes fires mainly by physical means, but also by some chemical means. Table 1 Specification for HCFC Blend A Property Requirement Purity 99,6 % by mass, min. Acidity 3 104by mass, max. Water content 10 104% by mass, max. Non-volatile residue 0,01 % by mass, max. Suspended mat
37、ter or sediment None visible BS EN 15004-3:2008EN 15004-3:2008 (E) 7 Table 2 HCFC Blend A component specification Component Tolerance (by mass) CHCl2CF3 0,5 % CHClF2 0,8 % CHClFCF3 0,9 % C10H16 0,5 % Table 3 Physical properties of HCFC Blend A Property Unit Value Molecular mass 92,9 Boiling point at
38、 1,013 bar (absolute) C 38,3 Freezing point C 10 a4 h LC50is the concentration lethal to 50 % of a rat population during a 4 h exposure. 6 System design 6.1 Fill density The fill density of the container shall not exceed the values given in Tables 7 and 8 for 25 bar and 42 bar systems, respectively.
39、 Table 7 Storage container characteristics for HCFC Blend A 25 bar Property Unit Value Maximum fill density kg/m3900 Maximum container working pressure at 50 C bar a 35 Superpressurization at 20 C bar a25 Reference should be made to Figure 1 for further data on pressure/temperature relationships. a1
40、 bar = 0,1 MPa = 105Pa; 1 MPa = 1 N/mm2. Table 8 Storage container characteristics for HCFC Blend A 42 bar Property Unit Value Maximum fill density kg/m3900 Maximum container working pressure at 50 C bar a53 Superpressurization at 20 C bar a42 Reference should be made to Figure 2 for further data on
41、 pressure/temperature relationships. a1 bar = 0,1 MPa = 105Pa; 1 MPa = 1 N/mm2. Exceeding the maximum fill density may result in the container becoming “liquid full”, with the effect that an extremely high rise in pressure occurs with small increases in temperature, which could adversely affect the
42、integrity of the container assembly. The relationships between pressure and temperature are shown in Figures 1 and 2 for maximum fill density. BS EN 15004-3:2008EN 15004-3:2008 (E) 11 6.2 Superpressurization Containers shall be superpressurized with nitrogen with a moisture content of not more than
43、60 106% by mass to an equilibrium pressure of (25,1025+) bar and (1,2042+) bar at a temperature of 20 C (see Clause 1 for exception). 6.3 Extinguishant quantity The quantity of extinguishant shall be the minimum required to achieve the design concentration within the hazard volume at the minimum exp
44、ected temperature, determined using Table 4 and the method according to EN 15004-1:2008, 7.6. The design concentrations shall be those specified for relevant hazards in Table 5, including a 1,3 safety factor on the extinguishing concentration. Consideration should be given to increasing this for par
45、ticular hazards, while seeking advice from the relevant authority. Key X temperature, C Y pressure, bar Figure 1 Temperature/pressure graph for HCFC Blend A Superpressurized with nitrogen to 25 bar at 20 C BS EN 15004-3:2008EN 15004-3:2008 (E) 12 Key X temperature, C Y pressure, bar Figure 2 Tempera
46、ture/pressure graph for HCFC Blend A Superpressurized with nitrogen to 42 bar at 20 C BS EN 15004-3:2008blankBS EN 15004-3:2008BSI Group Headquarters389 Chiswick High Road,London W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 Standards Institution (BSI)BSI is the independent national body resp
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