1、BRITISH STANDARDBS EN 15004-4:2008Fixed firefighting systems Gas extinguishing systems Part 4: Physical properties and system design of gas extinguishing systems for HFC 125 extinguishantICS 13.220.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40
2、g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 15004-4:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 2008November BSI 2008ISBN 978 0 580 59945 3National forewordThis British
3、Standard is the UK implementation of EN 15004-4:2008. It supersedes BS ISO 14520-8:2006 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee FSH/18, Fixed firefighting systems, to Subcommittee FSH/18/6, Gaseous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 orga
4、nizations 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 obligati
5、ons.Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 15004-4June 2008ICS 13.220.20English VersionFixed firefighting systems - Gas extinguishing systems - Part 4:Physical properties and system design of gas extinguishingsystems for HFC 125 e
6、xtinguishant (ISO 14520-8:2006,modified)Installations fixes de lutte contre lincendie - Installationsdextinction gaz - Partie 4 : Proprits physiques etconception des systmes pour agent extincteur HFC 125(ISO 14520-8:2006, modifie)Ortsfeste Brandbekmpfungsanlagen - Lschanlagen mitgasfrmigen Lschmitte
7、ln - Teil 4: PhysikalischeEigenschaften und Anlagenauslegung fr FeuerlschmittelHFC 125 (ISO 14520-8:2006, 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 for giving this E
8、uropeanStandard 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 versions (Engli
9、sh, 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, Belgium, Bulgaria, Cy
10、prus, 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 STANDARDIZATIONCOMI
11、T 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 15004-4:2008: EEN 15004-4:2008 (E) 2 Contents Page Foreword3 Foreword
12、 of ISO 14520-8:2006 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 HFC 125 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 15004-4:2008EN 1500
13、4-4:2008 (E) 3 Foreword This document (EN 15004-4:2008) 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 identical text or by
14、 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 be held responsible f
15、or identifying any or all such patent rights. The text of the International Standard ISO 14520-8:2006 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 Standard by Technic
16、al 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 firefighting systems Ga
17、s 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 extinguishing systems for
18、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 (ISO 14520-9, modifie
19、d) 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 and system design of
20、 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 IG-541 extinguishan
21、t (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 15004-4:2008EN 15004-4:2008 (E) 4 application and HFC 236fa ext
22、inguishant 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 European Standard: Aust
23、ria, 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 United Kingdom. BS EN 150
24、04-4:2008EN 15004-4:2008 (E) 5 Foreword of ISO 14520-8:2006 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 technical committees. Eac
25、h 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 with the Internation
26、al 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 International Standard
27、s 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 may be the subject o
28、f patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 14520-8 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 second edition cance
29、ls and replaces the first edition (ISO 14520-8:2000), 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 extinguishant Part 5:
30、 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: IG-541 extinguishan
31、t 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 15004-4:2008EN 15004-4:2008 (E) 6 1 Scope This document gives specific requirements for gaseous fire-extinguishing systems, with r
32、espect to the HFC 125 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, superpressurized with nitrogen. This does not preclude the use of other systems. 2 Normative refe
33、rences 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 firefighting system
34、s 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 HFC 125 shall comply with the specifica
35、tion according to Table 1. HFC 125 is a colourless, almost odourless, electrically non-conductive gas with a density approximately four times that of air. The physical properties are given in Table 2. HFC 125 extinguishes fires mainly by physical means, but also by some chemical means. Table 1 Speci
36、fication for HFC 125 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 matter or sediment None visible BS EN 15004-4:2008EN 15004-4:2008 (E) 7 Table 2 Physical properties of HFC 125 Prop
37、erty Unit Value Molecular mass 120,02 Boiling point at 1,013 bar (absolute) C 48,09 Freezing point C 101 Critical temperature C 66,02 Critical pressure bar abs a36,18 Critical volume cm3/mol 210 Critical density kg/m3573,6 Vapour pressure 20 C bar abs a12,05 Liquid density 20 C kg/m31 218,0 Saturate
38、d vapour density 20 C kg/m377,97 Specific volume of superheated vapour at 1,013 bar and 20 C m3/kg 0,1972 Chemical formula CF3CHF2Chemical name Pentafluoroethane a1 bar = 0,1 MPa = 105Pa; 1 MPa = 1 N/mm2. 4.2 Use of HFC 125 systems HFC 125 total flooding systems may be used for extinguishing fires o
39、f all classes within the limits specified in EN 15004-1:2008, Clause 4. The extinguishant requirements per volume of protected space are given in Table 3 for various levels of concentration. These are based on methods given in EN 15004-1:2008, 7.6. The extinguishing concentrations and design concent
40、rations for n-heptane and Surface Class A hazards are given in Table 4. BS EN 15004-4:2008EN 15004-4:2008 (E) 8 Table 3 HFC 125 total flooding quantity HCFC 125 mass requirements per unit volume of protected space, m/V (kg/m3) This information refers only to the product HFC-125, and does not represe
41、nt any other products containing pentafluoroethane as a component. Design concentration (by volume) Temperature T C Specific vapour volume S m3/kg 7 % 8 % 9 % 10 % 11 % 12 % 13 % 14 % 15 % 16 % 45 0,1497 0,5028 0,5809 0,6607 0,7422 0,8256 0,9109 0,9982 1,0874 1,1788 1,2724 40 0,1534 0,4907 0,5669 0,
42、6447 0,7243 0,8057 0,8889 0,9741 1,0612 1,1504 1,2417 35 0,1572 0,4788 0,5532 0,6291 0,7068 0,7862 0,8675 0,9505 1,0356 1,1226 1,2117 30 0,1608 0,4681 0,5408 0,6151 0,6910 0,7686 0,8480 0,9293 1,0124 1,0975 1,1846 25 0,1645 0,4576 0,5286 0,6012 0,6754 0,7513 0,8290 0,9084 0,9896 1,0728 1,1579 20 0,1
43、682 0,4475 0,5170 0,5880 0,6606 0,7348 0,8107 0,8884 0,9678 1,0492 1,1324 15 0,1719 0,4379 0,5059 0,5753 0,6464 0,7190 0,7933 0,8693 0,9470 1,0266 1,1081 10 0,1755 0,4289 0,4955 0,5635 0,6331 0,7042 0,7770 0,8514 0,9276 1,0055 1,0853 5 0,1791 0,4203 0,4855 0,5522 0,6204 0,6901 0,7614 0,8343 0,9089 0
44、,9853 1,0635 0 0,1828 0,4118 0,4757 0,5410 0,6078 0,6761 0,7460 0,8174 0,8905 0,9654 1,0420 5 0,1864 0,4038 0,4665 0,5306 0,5961 0,6631 0,7316 0,8016 0,8733 0,9467 1,0219 10 0,1900 0,3962 0,4577 0,5205 0,5848 0,6505 0,7177 0,7864 0,8568 0,9288 1,0025 15 0,1935 0,3890 0,4494 0,5111 0,5742 0,6387 0,70
45、47 0,7722 0,8413 0,9120 0,9844 20 0,1971 0,3819 0,4412 0,5018 0,5637 0,6271 0,6919 0,7581 0,8259 0,8953 0,9664 25 0,2007 0,3750 0,4333 0,4928 0,5536 0,6158 0,6794 0,7445 0,8111 0,8793 0,9491 30 0,2042 0,3686 0,4258 0,4843 0,5441 0,6053 0,6678 0,7318 0,7972 0,8642 0,9328 35 0,2078 0,3622 0,4185 0,475
46、9 0,5347 0,5948 0,6562 0,7191 0,7834 0,8492 0,9166 40 0,2113 0,3562 0,4115 0,4681 0,5258 0,5849 0,6454 0,7072 0,7704 0,8352 0,9014 45 0,2149 0,3503 0,4046 0,4602 0,5170 0,5751 0,6345 0,6953 0,7575 0,8212 0,8863 50 0,2184 0,3446 0,3982 0,4528 0,5088 0,5659 0,6244 0,6842 0,7454 0,8080 0,8721 55 0,2219
47、 0,3392 0,3919 0,4457 0,5007 0,5570 0,6145 0,6734 0,7336 0,7953 0,8584 60 0,2254 0,3339 0,3858 0,4388 0,4930 0,5483 0,6050 0,6629 0,7222 0,7829 0,8451 65 0,2289 0,3288 0,3799 0,4321 0,4854 0,5400 0,5957 0,6528 0,7112 0,7710 0,8321 70 0,2324 0,3239 0,3742 0,4256 0,4781 0,5318 0,5868 0,6430 0,7005 0,7
48、593 0,8196 75 0,2358 0,3192 0,3688 0,4194 0,4712 0,5242 0,5783 0,6337 0,6904 0,7484 0,8078 80 0,2393 0,3145 0,3634 0,4133 0,4643 0,5165 0,5698 0,6244 0,6803 0,7374 0,7960 85 0,2428 0,3100 0,3581 0,4073 0,4576 0,5090 0,5616 0,6154 0,6705 0,7268 0,7845 90 0,2463 0,3056 0,3531 0,4015 0,4511 0,5018 0,55
49、36 0,6067 0,6609 0,7165 0,7734 95 0,2498 0,3013 0,3481 0,3959 0,4448 0,4948 0,5459 0,5982 0,6517 0,7064 0,7625 m/V is the agent mass requirements (in kilogram per cubic metre); i.e. mass, m, in kilograms of agent required per cubic metre of protected volume V to produce the indicated concentration at the temperature specified. V is the net volume of hazard (in cubic metre); i.e. the enclosed volume minus the fixed structures impervious to extinguishant. SVccm =100T is
