1、October 2007DEUTSCHE NORM English price group 18No 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 13.220.10!$IdM“1386542
2、www.din.deDDIN EN 3-7Portable fire extinguishers Part 7: Characteristics, performance requirements and test methods(includes Amendment A1:2007)English version of DIN EN 3-7:2007-10Tragbare Feuerlscher Teil 7: Eigenschaften, Leistungsanforderungen und Prfungen (enthlt nderungA1:2007)Englische Fassung
3、 DIN EN 3-7:2007-10SupersedesDIN EN 3-7:2004-04 andDIN V 14406-5:2000-10www.beuth.deDocument comprises 56 pagesDIN EN 3-7:2007-10 2 National foreword This standard has been prepared by Technical Committee CEN/TC 70 “Manual means of firefighting equipment” (Secretariat: AFNOR, France). Through the in
4、corporation of Amendment A1:2007 into DIN EN 3-7:2004-04 the standard now includes specifications regarding Class F fire extinguishers (for use on cooking oil and fat fires) and polar solvents. The responsible German body involved in its preparation was the Normenausschuss Feuerwehrwesen (Firefighti
5、ng and Fire Protection Standards Committee), Technical Committee NA 031-01 FBR Handbettigte Gerte fr die Brandbekmpfung. The German edition of this European Standard includes a normative National Annex dealing with the testing of Class D fire extinguishers, the use of which is still permitted in Ger
6、many. Until May 1997, DIN EN 3-5 one of the standards replaced by the present document contained a National Annex specifying a standard test fire and pictogram for Class D extinguishers. The June 1997 edition of DIN EN 3-5 (“German version EN 3-5:1996 +AC:1997”) did not contain this National Annex.
7、Because there is a need for a standard test fire for testing Class D extinguishers in Germany, NA 031-01 FBR Handbettigte Gerte fr die Brandbekmpfung decided to reinstate the National Annex in the present standard. The Scope of this standard (Clause 1) states that because it is not possible to defin
8、e a representative standard test fire, the efficiency of extinguishers on Class D fires is to be established on a case-by-case basis. National Annex NA of this standard provides a means of doing this. Clause 17 “Maintenance” refers to national regulations. DIN 14406-4 is the national regulation deal
9、ing with the maintenance of portable fire extinguishers in Germany. How to use this consolidated version of DIN EN 3-7: Text added or modified by Amendment A1:2007 is indicated by and . Text deleted by Amendment A1:2007 is indicated by “ deleted text ”. The DIN Standards corresponding to the Interna
10、tional Standards referred to in clause 2 of the EN and listed in the National Annex NB are as follows: ISO 657-1 DIN 1028 (modified) ISO 4407 no German Standard available ISO 9227 DIN EN ISO 9227 Amendments This standard differs from DIN EN 3-7:2004-04 and DIN V 14406-5:2000-10 as follows: a) A norm
11、ative national annex (National Annex NA) covering the testing of Class D fire extinguishers (still permitted in Germany) has been added. b) Additional requirements for and a method of testing Class F fire extinguishers, including a pictogram (Annex L) and specifications for polar solvents (Annex M)
12、are now included. c) The design of the filling opening, excluding carbon dioxide fire extinguishers, has been modified. d) Specifications regarding operation and emission control mechanisms have been modified. e) In Annex K the dimensions for the attachment point at the cylindrical shaft end of the
13、compaction machine cam are no longer specified. ! “! “DIN EN 3-7:2007-10 3 Previous editions DIN 14032: 1941x-04 DIN 14406-1: 1955-07, 1956-08, 1958-02, 1964-04, 1976-11, 1983-02 DIN 14406-2: 1967-05, 1976-11, 1983-02 DIN V 14406-5: 2000-10 DIN EN 3-1: 1990-10, 1996-07 DIN EN 3-2: 1990-10, 1996-07 D
14、IN EN 3-4: 1990-10, 1996-07 DIN EN 3-5: 1990-10, 1997-06 DIN EN 3-7: 2004-04 National Annex NA (normative) Test fire for testing Class D fire extinguishers NA.1 Only fire extinguishers charged with either 9 kg or 12 kg of a Class D extinguishing powder or with 9 l of a Class D extinguishing liquid a
15、re permitted. NA.2 Fire extinguishers to be approved for use on Class D fires shall be subjected to the following suitability test: Tests shall be carried out in a hall (see Annex I). When extinguishing the two test fires described below a) and b) the suitability of the extinguisher for aluminium an
16、d magnesium, including their alloys, and for sodium and potassium shall be demonstrated. The suitability (fire performance) of the extinguisher for other metals shall be demonstrated separately. The following two test fires shall be extinguished with the same charge: a) Fill a tray made of 2 mm thic
17、k sheet steel and having a 50 cm 50 cm base and 10 cm high sides loosely and evenly with 3 kg of light metal alloy swarf having a magnesium content of 83 % to 88 %. Then, ignite two adjacent sides of the tray. The pre-test burn time shall be such that about half of the swarf is burned before the tes
18、t commences. The distance required during extinguishing is not specified. For the test to be deemed successful, the fire shall have been completely extinguished and there shall be evidence of unburned swarf, determined by opening the tray 10 minutes after the fire has been extinguished, starting fro
19、m the corners to the centre. b) Fill a tray as described in a) with 3 kg of sodium, place a container of petrol beneath the tray and heat the latter until the liquefied sodium self-ignites. The distance required during extinguishing is not specified. For the test to be deemed successful, the fire sh
20、all have been completely extinguished and there shall be evidence of unburned sodium, determined by opening the tray 10 minutes after the fire has been extinguished, starting from the corners to the centre. Part 2 of the marking for Class D fire extinguishers shall be as specified in 16.2 and contai
21、n the pictogram shown below. For extinguishers with a charge 6 kg the pictogram shall appear in a square box with a side length of at least 30 mm. DIN EN 3-7:2007-10 4 Figure NA.1 Pictogram for Class D fire extinguishers Test reports shall be as in DIN EN 3 Supplement 3 (Portable fire extinguishers
22、Model laboratory Report in compliance with EN 3-7; German version of CEN/TR 14922:2004). Where the test has been passed, a notice giving the metals for which the extinguisher is intended may be added to part 3 of the marking or placed on a separate label, e.g. “Suitable for use on fires of aluminium
23、, magnesium and their alloys, as well as sodium and potassium”. The lettering height for part 3 or any separate labels shall be in accordance with that specified in 16.2 for part 3. National Annex NB (informative) Bibliography DIN 1028, Hot rolled equal leg angles with round edges Dimensions, masses
24、, sectional properties DIN 14406-4, Portable fire extinguishers Part 4: Maintenance DIN 14406-4 Supplement 1, Portable fire extinguishers Part 4: Maintenance Information for application DIN 14406-4 Supplement 2, Portable fire extinguishers Part 4: Maintenance Information for relationship between DIN
25、 14406-4 and fire extinguishers according to DIN EN 3 DIN EN ISO 9227, Corrosion tests in artificial atmospheres Salt spray tests (ISO 9227:2006) EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 3-7:2004+A1 August 2007 ICS 13.220.10 Supersedes EN 3-7:2004English Version Portable fire extinguishe
26、rs - Part 7: Characteristics, performance requirements and test methods Extincteurs dincendie portatifs - 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
27、2003 and includes Amendment 1 approved by CEN on 30 June 2007. CEN members are bound to comply with the CEN/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 ref
28、erences 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, French, German). A version in any other language made by translation under the responsibility of a CEN membe
29、r 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, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, L
30、atvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, 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 B
31、russels 2007 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 3-7:2004+A1:2007: EContents 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 Cont
32、rol of discharge8 4.3 Operating position.8 4.4 Hose assembly.8 4.5 Propellants .8 4.6 Stored pressure extinguishers.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 fil
33、ling opening, excluding carbon dioxide fire extinguishers 9 6.4 Minimum fire ratings .9 7 Duration of operation, 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 Rete
34、ntion of propellant .14 8.1 Verification .14 8.2 Acceptance levels14 8.3 Production leak tests 14 9 Dielectric 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
35、10.3 Safety devices16 10.4 Filter for water based portable fire extinguishers16 10.5 Hose and coupling 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 ex
36、tinguisher mounting bracket19 14 Resistance to corrosion19 14.1 Resistance to external corrosion.19 14.2 Resistance to extinguishing medium of extinguishers using water based media.19 15 Fire performance20 EN 3-7:2004+A1:2007 (E)2Page 15.1 General20 15.2 Class A fire rating 20 15.3 Class B fire rati
37、ng 20 15.4 !Class F fire rating .20 16 Portable fire extinguisher identification20 16.1 Colour .20 16.2 Marking .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 Ann
38、ex D (normative) Operation and emission control mechanisms/devices 29 Annex E (normative) Test for performance 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 (n
39、ormative) Measurement of moisture content of wood42 Annex K (normative) Compaction procedure 43 Annex L (normative) !Specific requirements for Class F fire extinguisher 45 Annex M (normative) !Polar solvents .50 Bibliography52 EN 3-7:2004+A1:2007 (E)3Page Foreword This document (EN 3-7:2004+A1:2007)
40、 has been prepared by Technical Committee CEN/TC 70 “Manual means of firefighting equipment”, the secretariat of 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 co
41、nflicting national standards shall be withdrawn at the latest by February 2008. This document includes Amendment 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
42、 of the following parts, under the general title “Portable fire extinguishers“: !deleted text“ Part 61): Provisions 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: Add
43、itional requirements to EN 3-7 for the construction, resistance to pressure and mechanical tests for extinguishers 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 co
44、nformity of a portable fire extinguisher to EN 3 part 7 According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, Fra
45、nce, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, 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 wil
46、l supersede EN 3-6.EN 3-7:2004+A1:2007 (E)41 Scope This standard specifies the characteristics, performance requirements 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
47、 are applied only to powder type extinguishers which have gained a class B or class A and class B rating. Suitability 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 s
48、uitability are covered in all other respects by the requirements in this standard for powder extinguishers. !It is 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 conforma
49、nce with regard to Class F in this European Standard.“ NOTE The extinction of a metal fire presents a situation so 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 references This European Standard incorporates by dated or undated reference, provisions from other pu
