DIN EN 15004-4-2008 Fixed firefighting systems - Gas extinguishing systems - Part 4 Physical properties and system design of gas extinguishing systems for HFC 125 extinguishant (IS.pdf

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1、September 2008DEUTSCHE NORM English price group 9No part of this standard may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 13.220.20!$Qg“1466804

2、www.din.deDDIN EN 15004-4Fixed firefighting systems Gas extinguishing systems Part 4: Physical properties and system design of gas extinguishingsystems for HFC 125 extinguishant (ISO 14520-8:2006, modified)English version of DIN EN 15004-4:2008-09Ortsfeste Brandbekmpfungsanlagen Lschanlagen mit gasf

3、rmigen Lschmitteln Teil 4: Physikalische Eigenschaften und Anlagenauslegung fr Feuerlschmittel HFC 125(ISO 14520-8:2006, modifiziert)Englische Fassung DIN EN 15004-4:2008-09www.beuth.deDocument comprises 14 pagesDIN EN 15004-4:2008-09 2 National foreword This standard has been prepared by Technical

4、Committee CEN/TC 191 “Fixed firefighting systems” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Feuerwehrwesen (Firefighting and Fire Protection Standards Committee), Technical Committee NA 031-03-04 AA Lsch-anlagen mit gasfrmigen

5、 Lschmitteln und deren Bauteile. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15004-4 June 2008 ICS 13.220.20 English Version Fixed firefighting systems - Gas extinguishing systems - Part 4: Physical properties and system design of gas extinguishing systems for HFC 125 extinguishant (ISO 145

6、20-8:2006, modified) Installations fixes de lutte contre lincendie - Installations dextinction gaz - Partie 4: Proprits physiques et conception des systmes pour agent extincteur HFC 125 (ISO 14520-8:2006, modifie) Ortsfeste Brandbekmpfungsanlagen - Lschanlagen mit gasfrmigen Lschmitteln - Teil 4: Ph

7、ysikalische Eigenschaften und Anlagenauslegung fr Feuerlschmittel HFC 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 European Sta

8、ndard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, Fren

9、ch, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus,

10、 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 STANDARDIZATION COMIT

11、 EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15004-4:2008: EEN 15004-4:2008 (E) 2 Contents Page Foreword3 Forew

12、ord 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 DIN EN 15004-4:2008-09

13、 EN 15004-4:2008 (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 te

14、xt 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 be held respo

15、nsible for 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

16、 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 firefighting sy

17、stems 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 extinguishing syst

18、ems 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 (ISO 14520-9,

19、 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 and system d

20、esign 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 IG-541 exti

21、nguishant (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 DIN EN 15004-4:2008-09 EN 15004-4:2008 (E) 4 application and

22、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 European S

23、tandard: 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 United Kingd

24、om. DIN EN 15004-4:2008-09 EN 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 technic

25、al 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 wi

26、th 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 Inte

27、rnational 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 ma

28、y be the subject of 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 se

29、cond edition cancels 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 ext

30、inguishant 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: I

31、G-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. DIN EN 15004-4:2008-09 EN 15004-4:2008 (E) 6 1 Scope This document gives specific requirements for gaseous fire-exting

32、uishing systems, with respect 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 sy

33、stems. 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, Fi

34、xed firefighting 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 HFC 125 shall co

35、mply with the specification 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 chemic

36、al means. Table 1 Specification 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 DIN EN 15004-4:2008-09 EN 15004-4:2008 (E) 7 Table 2 Physica

37、l properties of HFC 125 Property 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 densit

38、y 20 C kg/m31 218,0 Saturated 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 us

39、ed for extinguishing fires of 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 conce

40、ntrations and design concentrations for n-heptane and Surface Class A hazards are given in Table 4. DIN EN 15004-4:2008-09 EN 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 prod

41、uct HFC-125, and does not represent 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

42、1,2724 40 0,1534 0,4907 0,5669 0,6447 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

43、,9084 0,9896 1,0728 1,1579 20 0,1682 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 0,6

44、204 0,6901 0,7614 0,8343 0,9089 0,9853 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

45、 0,4494 0,5111 0,5742 0,6387 0,7047 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 0,9

46、328 35 0,2078 0,3622 0,4185 0,4759 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 0,68

47、42 0,7454 0,8080 0,8721 55 0,2219 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 0,478

48、1 0,5318 0,5868 0,6430 0,7005 0,7593 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

49、 0,3531 0,4015 0,4511 0,5018 0,5536 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 imp