BS EN 15004-6-2008 Fixed firefighting systems - Gas extinguishing systems - Part 6 nPhysical properties and system design of gas extinguishing nsystems for HFC 23 extinguishant《固定灭.pdf

1、BRITISH STANDARDBS EN 15004-6:2008Fixed firefighting systems Gas extinguishing systems Part 6: Physical properties and system design of gas extinguishing systems for HFC 23 extinguishantICS 13.220.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g

2、59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 15004-6:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 2008November BSI 2008ISBN 978 0 580 59947 7National forewordThis British S

3、tandard is the UK implementation of EN 15004-6:2008. It supersedes BS ISO 14520-10:2005 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee FSH/18, Fixed fire fighting 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 15004-6June 2008ICS 13.220.20English VersionFixed firefighting systems - Gas extinguishing systems - Part 6:Physical properties and system design of gas extinguishingsystems for HFC 23

6、extinguishant (ISO 14520-10:2005,modified)Installations fixes de lutte contre lincendie - Installationsdextinction gaz - Partie 6 : Proprits physiques etconception des systmes pour agent extincteur HFC 23(ISO 14520-10:2005, modifie)Ortsfeste Brandbekmpfungsanlagen - Lschanlagen mitgasfrmigen Lschmit

7、teln - Teil 6: PhysikalischeEigenschaften und Anlagenauslegung fr FeuerlschmittelHFC 23 (ISO 14520-10:2005, 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

8、 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 versions (Eng

9、lish, 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,

10、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 STANDARDIZATIONCO

11、MIT 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 15004-6:2008: EEN 15004-6:2008 (E) 2 Contents Page Foreword3 Forewo

12、rd of ISO 14520-10:2005 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 23 systems .7 5 Safety of personnel9 6 System design10 6.1 Fill density 10 6.2 Superpressurization 10 6.3 Extinguishant quantity 10 BS EN 15004-6:2008EN 15

13、004-6:2008 (E) 3 Foreword This document (EN 15004-6:2008) 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

14、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 responsible

15、 for identifying any or all such patent rights. The text of the International Standard ISO 14520-10:2005 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 Tech

16、nical 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

17、 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 systems f

18、or 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, modi

19、fied) 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

20、 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 extinguis

21、hant (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 15004-6:2008EN 15004-6:2008 (E) 4 application and HFC 236fa

22、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 Standard: A

23、ustria, 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

24、15004-6:2008EN 15004-6:2008 (E) 5 Foreword of ISO 14520-10:2005 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.

25、 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 Interna

26、tional 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 Stan

27、dards 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 subje

28、ct of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 14520-10 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

29、cancels and replaces the first edition (ISO 14520-10:2000), 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 P

30、art 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 extin

31、guishant 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 15004-6:2008EN 15004-6:2008 (E) 6 1 Scope This document gives specific requirements for gaseous fire-extinguishing systems,

32、 with respect to the HFC 23 extinguishant. It includes details of physical properties, specification, usage and safety aspects and is applicable to systems operating at nominal pressure of 41 bar without nitrogen superpressurization. This does not preclude the use of other systems. 2 Normative refer

33、ences 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 systems

34、 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 23 shall comply with the specificati

35、on according to Table 1. HFC 23 is a colourless, almost odourless, electrically non-conductive gas with a density approximately 2,4 times that of air. The physical properties are given in Table 2. HFC 23 extinguishes fires mainly by physical means, but also by some chemical means. Table 1 Specificat

36、ion for HFC 23 Property Requirement Purity 99,6 % (mol/mol), 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 15004-6:2008EN 15004-6:2008 (E) 7 Table 2 Physical properties of HFC 23 Property

37、Unit Value Molecular mass 70 Boiling point at 1,013 bar (absolute) C 82,0 Freezing point C 155,2 Critical temperature C 25,9 Critical pressure bar abs a48,36 Critical volume cm3/mol 133 Critical density kg/m3525 Vapour pressure 20 C bar abs a41,80 Liquid density 20 C kg/m3806,6 Saturated vapour dens

38、ity 20 C kg/m3263,0 Specific volume of superheated vapour at 1,013 bar and 20 C m3/kg 0,3409 Chemical formula CHF3Chemical name Trifluoromethane a1 bar = 0,1 MPa = 105Pa; 1 MPa = 1 N/mm2. 4.2 Use of HFC 23 systems HFC 23 total flooding systems may be used for extinguishing fires of all classes withi

39、n the limits specified in EN 15004-1:2008, Clause 4. The extinguishant requirements per volume of protected space are shown 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 concentrations for n-hepta

40、ne and Surface Class A hazards are given in Table 4. BS EN 15004-6:2008EN 15004-6:2008 (E) 8 Table 3 HFC 23 total flooding quantity HFC 23 mass requirements per unit volume of protected space, m/V (kg/m3) This information refers only to HFC 23, and does not represent any other products containing tr

41、ifluoromethane as a component. Temperature T Specific vapour volume S Design concentration (by volume) C m3/kg 10 % 12 % 14 % 15 % 16 % 17 % 18 % 20 % 22 % 24 % 60 0,2428 0,4576 0,5616 0,6705 0,7268 0,7845 0,8436 0,9041 1,0297 1,1617 1,3006 55 0,2492 0,4459 0,5472 0,6533 0,7081 0,7644 0,8219 0,8809

42、1,0032 1,1318 1,2672 50 0,2555 0,4349 0,5337 0,6371 0,6907 0,7455 0,8016 0,8591 0,9785 1,1039 1,2360 45 0,2617 0,4246 0,5211 0,6221 0,6743 0,7278 0,7826 0,8388 0,9553 1,0778 1,2067 40 0,2680 0,4146 0,5088 0,6074 0,6585 0,7107 0,7643 0,8191 0,9328 1,0524 1,1783 35 0,2742 0,4052 0,4973 0,5937 0,6436 0

43、,6947 0,7470 0,8006 0,9117 1,0286 1,1517 30 0,2803 0,3964 0,4865 0,5808 0,6296 0,6795 0,7307 0,7831 0,8919 1,0062 1,1266 25 0,2865 0,3878 0,4760 0,5682 0,6160 0,6648 0,7149 0,7662 0,8726 0,9845 1,1022 20 0,2926 0,3797 0,4660 0,5564 0,6031 0,6510 0,7000 0,7502 0,8544 0,9639 1,0793 15 0,2987 0,3720 0,

44、4565 0,5450 0,5908 0,6377 0,6857 0,7349 0,8370 0,9443 1,0572 10 0,3047 0,3647 0,4475 0,5343 0,5792 0,6251 0,6722 0,7204 0,8205 0,9257 1,0364 5 0,3108 0,3575 0,4388 0,5238 0,5678 0,6129 0,6590 0,7063 0,8044 0,9075 1,0161 0 0,3168 0,3507 0,4304 0,5139 0,5570 0,6013 0,6465 0,6929 0,7891 0,8903 0,9968 5

45、 0,3229 0,3441 0,4223 0,5042 0,5465 0,5899 0,6343 0,6798 0,7742 0,8735 0,9780 10 0,3289 0,3378 0,4146 0,4950 0,5365 0,5791 0,6227 0,6674 0,7601 0,8576 0,9601 15 0,3349 0,3318 0,4072 0,4861 0,5269 0,5688 0,6116 0,6555 0,7465 0,8422 0,9429 20 0,3409 0,3259 0,4000 0,4775 0,5177 0,5587 0,6008 0,6439 0,7

46、334 0,8274 0,9263 25 0,3468 0,3204 0,3932 0,4694 0,5089 0,5492 0,5906 0,6330 0,7209 0,8133 0,9106 30 0,3528 0,3149 0,3865 0,4614 0,5002 0,5399 0,5806 0,6222 0,7086 0,7995 0,8951 35 0,3588 0,3097 0,3801 0,4537 0,4918 0,5309 0,5708 0,6118 0,6968 0,7861 0,8801 40 0,3647 0,3047 0,3739 0,4464 0,4839 0,52

47、23 0,5616 0,6019 0,6855 0,7734 0,8659 45 0,3707 0,2997 0,3679 0,4391 0,4760 0,5138 0,5525 0,5922 0,6744 0,7609 0,8519 50 0,3766 0,2950 0,3621 0,4323 0,4686 0,5058 0,5439 0,5829 0,6638 0,7489 0,8385 55 0,3826 0,2904 0,3564 0,4255 0,4612 0,4978 0,5353 0,5737 0,6534 0,7372 0,8254 60 0,3885 0,2860 0,351

48、0 0,4190 0,4542 0,4903 0,5272 0,5650 0,6435 0,7260 0,8128 65 0,3944 0,2817 0,3457 0,4128 0,4474 0,4830 0,5193 0,5566 0,6339 0,7151 0,8007 70 0,4004 0,2775 0,3406 0,4066 0,4407 0,4757 0,5115 0,5482 0,6244 0,7044 0,7887 m/V is the agent mass requirement (in kilograms per cubic metre); i.e. mass, m, in

49、 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 metres); i.e. the enclosed volume minus the fixed structures impervious to extinguishant. 100cVmcS=T is the temperature (in degrees Celsius); i.e. the design temperature in the hazard area. S is the specific volume (in cubic metres per kilogram); the specific volume of superheated HFC 23