1、BRITISH STANDARDBS EN 3-7:2004 +A1:2007Portable fire extinguishers Part 7: Characteristics, performance requirements and test methodsICS 13.220.10g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3
2、g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 3-7:2004+A1:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 12 February 2004 BSI 2008ISBN 978 0 580 61919 9National forewordThis British Standard is the UK implementation of EN 3-7:2004+
3、A1:2007. It supersedes BS 7937:2000 and BS EN 3-7:2004 which are withdrawn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is ind
4、icated by !“.The UK participation in its preparation was entrusted by Technical Committee FSH/2, Fire extinguishers, to Subcommittee FSH/2/11, Portable fire extinguishers.A list of organizations represented on this subcommittee can be obtained on request to its secretary.This publication does not pu
5、rport 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 obligations.Amendments/corrigenda issued since publicationDate Comments30 April 2008 Implementation of CEN amendment A1:
6、2007 and revision of supersession detailsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3-7:2004+A1 August 2007 ICS 13.220.10 Supersedes EN 3-7:2004English Version Portable fire extinguishers - Part 7: Characteristics, performance requirements and test methods Extincteurs dincendie portatifs -
7、 Partie 7: Caractristiques, performances et mthodes dessai Tragbare Feuerlscher - Teil 7: Eigenschaften, Leistungsanforderungen und Prfungen This European Standard was approved by CEN on 5 March 2003 and includes Amendment 1 approved by CEN on 30 June 2007. CEN members are bound to comply with the C
8、EN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard 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
9、 to any CEN member. This European Standard exists in three official versions (English, French, 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 ver
10、sions. CEN members are the national standards bodies of 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,
11、Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN natio
12、nal Members. Ref. No. EN 3-7:2004+A1:2007: E2 Contents Foreword4 1 Scope 5 2 Normative references 5 3 Terms and definitions .5 4 General7 4.1 Description of a portable fire extinguisher .7 4.2 Control of discharge8 4.3 Operating position.8 4.4 Hose assembly.8 4.5 Propellants .8 4.6 Stored pressure e
13、xtinguishers.8 5 Testing of portable fire extinguishers .9 6 Nominal charges, filling tolerances and minimum fire performance.9 6.1 Nominal charges9 6.2 Filling tolerances .9 6.3 !Design of the filling opening, excluding carbon dioxide fire extinguishers 9 6.4 Minimum fire ratings .9 7 Duration of o
14、peration, residual charge and operating temperatures.12 7.1 Duration of operation 12 7.2 Residual charge .13 7.3 Commencement of discharge 13 7.4 Effective range of operating temperature .13 8 Retention of propellant .14 8.1 Verification .14 8.2 Acceptance levels14 8.3 Production leak tests 14 9 Die
15、lectric test for water based extinguishers .15 9.1 General15 9.2 Required performance 15 10 Requirements for components.15 10.1 General15 10.2 Operation and emission control mechanisms/devices .15 10.3 Safety devices16 10.4 Filter for water based portable fire extinguishers16 10.5 Hose and coupling
16、systems .16 10.6 Control valve 16 11 Means of pressure indication .17 11.1 Pressure gauge17 11.2 Pressure indicator .18 12 Horns for carbon dioxide portable fire extinguishers18 13 Portable fire extinguisher mounting bracket19 14 Resistance to corrosion19 14.1 Resistance to external corrosion.19 14.
17、2 Resistance to extinguishing medium of extinguishers using water based media.19 15 Fire performance20 BS EN 3-7:2004+A1:20073 15.1 General20 15.2 Class A fire rating 20 15.3 Class B fire rating 20 15.4 !Class F fire rating .20 16 Portable fire extinguisher identification20 16.1 Colour .20 16.2 Mark
18、ing .20 17 Maintenance .24 Annex A (normative) Duration of operation, residual charge tests.25 Annex B (normative) Range of operating temperature .26 Annex C (normative) Dielectric test 27 Annex D (normative) Operation and emission control mechanisms/devices 29 Annex E (normative) Test for performan
19、ce of the hose30 Annex F (normative) Control valve test31 Annex G (normative) Tests on the horn .32 Annex H (normative) Resistance to corrosion.33 Annex I (normative) Fire tests .34 Annex J (normative) Measurement of moisture content of wood42 Annex K (normative) Compaction procedure 43 Annex L (nor
20、mative) !Specific requirements for Class F fire extinguisher 45 Annex M (normative) !Polar solvents .50 Bibliography52 BS EN 3-7:2004+A1:20074 Foreword This document (EN 3-7:2004+A1:2007) has been prepared by Technical Committee CEN/TC 70 “Manual means of firefighting equipment”, the secretariat of
21、which is held by AFNOR. This document shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2008 and conflicting national standards shall be withdrawn at the latest by February 2008. This document includes Amendment
22、1, approved by CEN on 2007-06-30. This document supersedes EN 3-7:2004. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. EN 3 consists of the following parts, under the general title “Portable fire extinguishers“: !deleted text“ Part 61): Provisio
23、ns for the attestation of conformity of portable fire extinguishers in accordance with EN 3 part 1 to part 5 Part 7: Characteristics, performance requirements and test methods Part 8: Additional requirements to EN 3-7 for the construction, resistance to pressure and mechanical tests for extinguisher
24、s with a maximum allowable pressure equal or lower than 30 bar Part 9: Additional requirements to EN 3-7 for pressure resistance of CO2extinguishers Part 102): Provisions valuating the conformity of a portable fire extinguisher to EN 3 part 7 According to the CEN/CENELEC Internal Regulations, the na
25、tional standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway
26、, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. 1)EN 3-6 will be superseded by EN 3-10. 2)EN 3-10 will update and amend EN 3-6. EN 3-10 will supersede EN 3-6.BS EN 3-7:2004+A1:20075 1 Scope This standard specifies the characteristics, performance requi
27、rements and test methods for portable fire extinguishers. Reference to the suitability of an extinguisher for use on gaseous fires (class C fires) are at the manufacturers discretion, but are applied only to powder type extinguishers which have gained a class B or class A and class B rating. Suitabi
28、lity of extinguishers for use on class D fires (fires involving flammable metals) is outside the scope of this standard in respect of test fires. However, extinguishers claiming class D suitability are covered in all other respects by the requirements in this standard for powder extinguishers. !It i
29、s considered hazardous for powder and carbon dioxide fire extinguishers to be used on Class F fires. For this reason powder and carbon dioxide fire extinguishers are excluded for conformance with regard to Class F in this European Standard.“ NOTE The extinction of a metal fire presents a situation s
30、o specific (in terms of the metal itself, its form, the configuration of the fire etc.) that it is not possible to define a representative standard fire for the purposes of testing. The efficiency of extinguishers on class D fires needs to be established on a case by case basis. 2 Normative referenc
31、es This European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these
32、publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies (including amendments). EN 2, Classification of fires ISO 9227, Corrosion tests in artificial atmospheres Salt spray te
33、sts ISO 657-1, Hot-rolled steel sections Part 1: Equal-leg angles Dimensions ISO 4470, Sawn timber Determination of the average moisture content of a lot Farbregister RAL-841-GL. 3 Terms and definitions For the purposes of this European Standard, the following terms and definitions apply. 3.1 fire e
34、xtinguisher appliance containing an extinguishing medium which can be expelled by the action of internal pressure and be directed on to a fire NOTE This pressure can be stored pressure or pressure produced by the release of an auxiliary gas from a cartridge. BS EN 3-7:2004+A1:20076 3.2 portable fire
35、 extinguisher fire extinguisher which is designed to be carried and operated by hand and which in working order has a mass of not more than 20 kg NOTE Throughout this standard it is referred to as an “extinguisher“ 3.3 clean agent electrically non-conducting, volatile, or gaseous fire extinguishing
36、medium that does not leave a residue upon evaporation NOTE Examples are fluorocarbons (FCs), perfluorocarbons (PFCs) and fluoroiodocarbons (FICs). 3.4 halon agent that contains as primary components one or more organic compounds containing one or more of the elements fluorine, chlorine, bromine, or
37、iodine 3.5 body shell of the extinguisher not fitted with its accessories but fitted with all its welded/brazed parts 3.6 extinguishing medium substance contained in the extinguisher which causes extinction of a fire 3.7 charge mass or volume of the extinguishing medium contained in the extinguisher
38、, expressed as a volume (in litres) for water based extinguishers and as a mass (in kilograms) for other extinguishers 3.8 water based extinguisher !extinguisher containing water, water with additive or wet chemical NOTE This also includes foam.“ 3.9 powder extinguisher extinguisher containing fire
39、extinguishing powder 3.10 carbon dioxide extinguisher extinguisher containing carbon dioxide 3.11 halon extinguisher extinguisher containing halon 3.12 clean agent extinguisher extinguisher containing a clean agent 3.13 duration of operation time during which the extinguishing medium is discharged,
40、without any interruption in the discharge and with the valve fully opened not including discharge of the residual propellant gas BS EN 3-7:2004+A1:20077 3.14 residual charge mass of medium remaining after continuous complete discharge including all propellant gas 3.15 maximum pressure at maximum ope
41、rating temperature, P (Tmax) (Pressure experimentally measured) pressure measured in the extinguisher after stabilisation during at least 24 h at maximum operating temperature (which is 60 C) and for cartridge operated extinguishers, the maximum pressure is the maximum pressure recorded for 0,5 s du
42、ring a period of three minutes, excluding the first second after release of the propellant gas. 3.16 Tmaxmaximum operating temperature declared by the manufacturer (see 7.4.1) 3.17 Tminminimum operating temperature declared by the manufacturer (see 7.4.1) 4 General 4.1 Description of a portable fire
43、 extinguisher 4.1.1 A portable fire extinguisher is described by the type of extinguishing medium it contains. At present, there are: water based, including foam !and wet chemical“ extinguishers (see Note 1); powder type extinguishers; carbon dioxide type extinguishers; halon type extinguishers (see
44、 Note 2); clean agent extinguishers. NOTE 1 Water based extinguishers can be produced with or without a low freeze depressant. Water based extinguishers, including foam, containing different proportions of low freeze depressant shall be treated as separate and distinct models for the purposes of tes
45、ting the range of operating temperatures (see 7.4.2) and electrical conductivity (see clause 9), and fire rating tests. All other requirements relating to the design and construction of water based extinguishers are applicable to all models irrespective of content. NOTE 2 Attention is drawn to Europ
46、ean Council Regulation 2037/2000 concerning the use of halons. 4.1.2 A portable fire extinguisher consists of the following components: a) body (see 3.5); b) body fittings, which are fixed to or screwed onto the body, and include at least the following: control device(s) (see 4.2, 4.3 and 10.1); hos
47、e assembly (see 4.4) and/or horns and/or nozzles; head assembly. This also constitutes the main closure (see 6.3); BS EN 3-7:2004+A1:20078 operating device (see 4.3). NOTE The head assembly, operating device and control device(s) can be separate or may be incorporated in a single unit. c) media (see
48、 4.1.1): 4.2 Control of discharge Portable fire extinguishers shall be fitted with a self-closing control valve to enable the discharge to be interrupted temporarily (see 10.6). 4.3 Operating position Extinguishers shall operate without being turned over to an inverted position. The operating device
49、 of an extinguisher shall be located on the top of the extinguisher. A control device at the end of the hose shall be permitted. Hand wheel controls of the valve on external propellant cartridges shall be located on the top 60 % of the extinguisher body. 4.4 Hose assembly Extinguishers having a mass of extinguishing medium greater than 3 kg, or a volume of extinguishing medium greater than 3 l shall be provided with a discharge hose. The length of the flexible section of the hose assembly shall be 400 mm or greater. When an extinguisher
