BS EN 15004-5-2008 Fixed firefighting systems - Gas extinguishing systems - Part 5 nPhysical properties and system design of gas extinguishing nsystems for HFC 227ea extinguishant《.pdf

1、BRITISH STANDARDBS EN 15004-5:2008Fixed firefighting systems Gas extinguishing systems Part 5: Physical properties and system design of gas extinguishing systems for HFC 227ea extinguishantICS 13.220.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g

2、40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 15004-5:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 2008Novemer BSI 2008ISBN 978 0 580 59946 0National forewordThis British

3、 Standard is the UK implementation of EN 15004-5:2008. It supersedes BS ISO 14520-9:2006 which is withdrawn.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 or

4、ganizations 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 obliga

5、tions.Amendments/corrigenda issued since publicationDate CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 15004-5June 2008ICS 13.220.20English VersionFixed firefighting systems - Gas extinguishing systems - Part 5:Physical properties and system design of gas extinguishingsystems for HFC 227

6、ea extinguishant (ISO 14520-9:2006,modified)Installations fixes de lutte contre lincendie - Installationsdextinction gaz - Partie 5 : Proprits physiques etconception des systmes pour agent extincteur HFC 227ea(ISO 14520-9:2006, modifie)Ortsfeste Brandbekmpfungsanlagen - Lschanlagen mitgasfrmigen Lsc

7、hmitteln - Teil 5: PhysikalischeEigenschaften und Anlagenauslegung fr FeuerlschmittelHFC 227ea (ISO 14520-9:2006, 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 givin

8、g 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 version

9、s (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, Belgium, Bulg

10、aria, 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 STANDARDIZA

11、TIONCOMIT 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 15004-5:2008: EEN 15004-5:2008 (E) 2 Contents Page Foreword3

12、Foreword of ISO 14520-9:2006 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 227ea 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 15004-5:2

13、008EN 15004-5:2008 (E) 3 Foreword This document (EN 15004-5:2008) 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

14、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 be held res

15、ponsible for identifying any or all such patent rights. The text of the International Standard ISO 14520-9:2006 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

16、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 firefighting

17、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 extinguishing sy

18、stems 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-

19、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 and system

20、 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 IG-541 ex

21、tinguishant (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 15004-5:2008EN 15004-5:2008 (E) 4 application and HFC

22、 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 Stan

23、dard: 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 Kingdom.

24、 BS EN 15004-5:2008EN 15004-5:2008 (E) 5 Foreword of ISO 14520-9:2006 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 commi

25、ttees. 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 with the I

26、nternational 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 Internationa

27、l 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 may be the

28、 subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 14520-9 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 edi

29、tion cancels and replaces the first edition (ISO 14520-9:2000), 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 extinguisha

30、nt 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: IG-541 e

31、xtinguishant 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 15004-5:2008EN 15004-5:2008 (E) 6 1 Scope This document gives specific requirements for gaseous fire-extinguishing syst

32、ems, with respect to the HFC 227ea 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. 2 Normativ

33、e 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 firefighting

34、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 227ea shall comply with the s

35、pecification according to Table 1. HFC 227ea is a colourless, almost odourless, electrically non-conductive gas with a density approximately six times that of air. The physical properties are given in Table 2. HFC 227ea extinguishes fires mainly by physical means, but also by some chemical means. Ta

36、ble 1 Specification for HFC 227ea Property Requirement Purity 99,6 % by mass, min. Acidity 3 106by mass, max. Water content 10 106% by mass, max. Non-volatile residue 0,01 % by mass, max. Suspended matter or sediment None visible BS EN 15004-5:2008EN 15004-5:2008 (E) 7 Table 2 Physical properties of

37、 HFC 227ea Property Unit Value Molecular mass 170 Boiling point at 1,013 bar (absolute) C 16,4 Freezing point C 127 Critical temperature C 101,7 Critical pressure bar abs a29,26 Critical volume cm3/mol 274 Critical density kg/m3573 Vapour pressure 20 C bar abs a3,9 Liquid density 20 C kg/m31 410 Sat

38、urated vapour density 20 C kg/m331,035 Specific volume of superheated vapour at 1,013 bar and 20 C m3/kg 0,1374 Chemical formula CF3CHFCF3Chemical name Heptafluoropropane a1 bar = 0,1 MPa = 105Pa; 1 MPa = 1 N/mm2. 4.2 Use of HFC 227ea systems HFC 227ea total flooding systems may be used for extingui

39、shing 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 concentrations and d

40、esign concentrations for n-heptane and Surface Class A hazards are given in Table 4. BS EN 15004-5:2008EN 15004-5:2008 (E) 8 Table 3 HFC 227ea total flooding quantity HFC 227ea mass requirements per unit volume of protected space, m/V (kg/m3) This information refers only to the product HFC-227ea, an

41、d does not represent any other products containing 1,1,1,2,3,3,3-heptafluoropropane as a component. Design concentration (by volume) Temperature T C Specific vapour volume S m3/kg 6 % 7 % 8 % 9 % 10 % 11 % 12 % 13 % 14 % 15 % 10 0,1215 0,5254 0,6196 0,7158 0,8142 0,9147 1,0174 1,1225 1,2301 1,3401 1

42、,4527 5 0,1241 0,5142 0,6064 0,7005 0,7967 0,8951 0,9957 1,0985 1,2038 1,3114 1,4216 0 0,1268 0,5034 0,5936 0,6858 0,7800 0,8763 0,9748 1,0755 1,1785 1,2839 1,3918 5 0,1294 0,4932 0,5816 0,6719 0,7642 0,8586 0,9550 1,0537 1,1546 1,2579 1,3636 10 0,1320 0,4834 0,5700 0,6585 0,7490 0,8414 0,9360 1,032

43、7 1,1316 1,2328 1,3364 15 0,1347 0,4740 0,5589 0,6457 0,7344 0,8251 0,9178 1,0126 1,1096 1,2089 1,3105 20 0,1373 0,4650 0,5483 0,6335 0,7205 0,8094 0,9004 0,9934 1,0886 1,1859 1,2856 25 0,1399 0,4564 0,5382 0,6217 0,7071 0,7944 0,8837 0,9750 1,0684 1,1640 1,2618 30 0,1425 0,4481 0,5284 0,6104 0,6943

44、 0,7800 0,8676 0,9573 1,0490 1,1428 1,2388 35 0,1450 0,4401 0,5190 0,5996 0,6819 0,7661 0,8522 0,9402 1,0303 1,1224 1,2168 40 0,1476 0,4324 0,5099 0,5891 0,6701 0,7528 0,8374 0,9239 1,0124 1,1029 1,1956 45 0,1502 0,4250 0,5012 0,5790 0,6586 0,7399 0,8230 0,9080 0,9950 1,0840 1,1751 50 0,1527 0,4180

45、0,4929 0,5694 0,6476 0,7276 0,8093 0,8929 0,9784 1,0660 1,1555 55 0,1553 0,4111 0,4847 0,5600 0,6369 0,7156 0,7960 0,8782 0,9623 1,0484 1,1365 60 0,1578 0,4045 0,4770 0,5510 0,6267 0,7041 0,7832 0,8641 0,9469 1,0316 1,1183 65 0,1604 0,3980 0,4694 0,5423 0,6167 0,6929 0,7707 0,8504 0,9318 1,0152 1,10

46、05 70 0,1629 0,3919 0,4621 0,5338 0,6072 0,6821 0,7588 0,8371 0,9173 0,9994 1,0834 75 0,1654 0,3859 0,4550 0,5257 0,5979 0,6717 0,7471 0,8243 0,9033 0,9841 1,0668 80 0,1679 0,3801 0,4482 0,5178 0,5890 0,6617 0,7360 0,8120 0,8898 0,9694 1,0509 85 0,1704 0,3745 0,4416 0,5102 0,5803 0,6519 0,7251 0,800

47、0 0,8767 0,9551 1,0354 90 0,1730 0,3690 0,4351 0,5027 0,5717 0,6423 0,7145 0,7883 0,8638 0,9411 1,0202 95 0,1755 0,3638 0,4290 0,4956 0,5636 0,6332 0,7044 0,7771 0,8516 0,9277 1,0057 100 0,1780 0,3587 0,4229 0,4886 0,5557 0,6243 0,6945 0,7662 0,8396 0,9147 0,9916 m/V is the agent mass requirements (

48、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 extingu

49、ishant. SVccm=100T is the temperature (in degree Celsius); i.e. the design temperature in the hazard area. S is the specific volume (in cubic metre per kilogram); the specific volume of superheated HFC 227ea vapour at a pressure of 1,013 bar may be approximated by the formula: S = k1+ k2T where k1= 0,1269; k2= 0,000513. c is the concentration (in percent); i.e. the volumetric concentration of HFC 227ea in air at the temperature indicated, and a pressure of 1,013 bar absolute. BS