EN 61340-4-4-2012 en Electrostatics - Part 4-4 Standard test methods for specific applications - Electrostatic classification of flexible intermediate bulk containers (FIBC) (Incor.pdf

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1、BSI Standards PublicationBS EN 61340-4-4:2012+A1:2015 ElectrostaticsPart 4-4: Standard test methods for specific applications Electrostatic classification of flexible intermediate bulk containers (FIBC)BS EN 61340-4-4:2012+A1:2015 BRITISH STANDARDNational forewordThis British Standard is the UK impl

2、ementation of EN 61340-4-4:2012+A1:2015. It is identical to IEC 61340-4-4:2012, incorporating amendment 1:2014. It supersedes BS EN 61340-4-4:2012 which will be withdrawn on 17 December 2017.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indica

3、ting changes to IEC text carry the number of the IEC amendment. For example, text altered by IEC amendment 1 is indicated by .The UK participation in its preparation was entrusted to Technical Committee GEL/101, Electrostatics.A list of organizations represented on this committee can be obtained on

4、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. The British Standards Institution 2015. Published by BSI Standards Limited 2015ISBN 978 0 580 84306 8ICS 17.220.99; 29.020; 55.080Compl

5、iance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2012.Amendments/corrigenda issued since publicationDate Text affected31 January 2015 Implementation of IEC a

6、mendment 1:2014 with CENELEC endorsement A1:2015EUROPEAN STANDARD EN 61340-4-4 NORME EUROPENNE EUROPISCHE NORM March 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Centre

7、: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61340-4-4:2012 E ICS 17.220.99; 29.020; 55.080 Supersedes EN 61340-4-4:2005English version Electrostatics - Part 4-4: Standard test methods

8、 for specific applications - Electrostatic classification of flexible intermediate bulk containers (FIBC) (IEC 61340-4-4:2012) Electrostatique - Partie 4-4: Mthodes dessai normalises pour des applications spcifiques - Classification lectrostatique des grands rcipients pour vrac souples (GRVS) (CEI 6

9、1340-4-4:2012) Elektrostatik - Teil 4-4: Normprfverfahren fr spezielle Anwendungen - Einordnung flexibler Schttgutbehlter (FIBC) in elektrostatischer Hinsicht (IEC 61340-4-4:2012) This European Standard was approved by CENELEC on 2012-02-22. CENELEC members are bound to comply with the CEN/CENELEC I

10、nternal 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-CENELEC Management Centre or to

11、any CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the

12、official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Pol

13、and, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 61340-4-4:2012EN 61340-4-4:2012+A1January 2015EN 61340-4-4:2012 - 2 - Foreword The text of document 101/346/FDIS, future edition 2 of IEC 61340-4-4, prepared by IEC TC 101, “Electrostatics“ w

14、as submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61340-4-4:2012. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2012-11-22 latest date by whic

15、h the national standards conflicting with the document have to be withdrawn (dow) 2015-02-22 This document supersedes EN 61340-4-4:2005. EN 61340-4-4:2012 includes the following significant technical changes with respect to EN 61340-4-4:2005: a) Adoption of a type classification system for FIBC base

16、d on four types: A, B, C and D. b) Guidance for safe use of FIBC in relation to hazardous areas and hazardous zones defined in EN 60079-10-1 and EN 60079-10-2 is added. c) Resistance to groundable points and electrical breakdown voltage measurements on FIBC shall be measured at low humidity only. d)

17、 Requirements for labelling FIBC are changed to improve clarity and ease of recognition by end users. e) Classification, performance requirements and guidance for safe use of inner liners in combination with FIBC are added. f) An informative annex giving guidance on test methods for quality control

18、and inspection testing is added. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Stan

19、dard IEC 61340-4-4:2012 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following note has to be added for the standard indicated: IEC 61340-2-1 NOTE Harmonized as EN 61340-2-1. BS EN 61340-4-4:2012 2 BS EN 61340-4-4:2012+A1:201

20、5EN 61340-4-4:2012+A1:2015EN 61340-4-4:2012/A1:2015 - 2 - Foreword The text of document 101/421/CDV, future IEC 61340-4-4:2012/A1, prepared by IEC/TC 101 “Electrostatics“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61340-4-4:2012/A1:2015. The following dates are fixe

21、d: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-09-17 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2017-12-17 Attention is drawn to the p

22、ossibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the International Standard IEC 61340-4-4:2012/A1:2014 was approved by CENELEC as a

23、 European Standard without any modification. 3 BS EN 61340-4-4:2012+A1:2015EN 61340-4-4:2012+A1:2015EN 61340-4-4:2012/A1:2015 - 2 - Foreword The text of document 101/421/CDV, future IEC 61340-4-4:2012/A1, prepared by IEC/TC 101 “Electrostatics“ was submitted to the IEC-CENELEC parallel vote and appr

24、oved by CENELEC as EN 61340-4-4:2012/A1:2015. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-09-17 latest date by which the national standards conflicting with the

25、document have to be withdrawn (dow) 2017-12-17 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. Endorsement notice The text of the Inte

26、rnational Standard IEC 61340-4-4:2012/A1:2014 was approved by CENELEC as a European Standard without any modification. Foreword to amendment A1- 3 - EN 61340-4-4:2012 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following

27、documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE When an internat

28、ional publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year IEC 60079-10-1 - Explosive atmospheres - Part 10-1: Classification of areas - Explosive gas atmospheres EN 60079-10-1 - IEC 60079-10-2 - Explosive atmosphere

29、s - Part 10-2: Classification of areas - Combustible dust atmospheres EN 60079-10-2 - IEC 60243-1 1998 Electrical strength of insulating materials - Test methods - Part 1: Tests at power frequencies EN 60243-1 1998 IEC 60243-2 - Electric strength of insulating materials - Test methods - Part 2: Addi

30、tional requirements for tests using direct voltage EN 60243-2 - IEC 60417 Data-base Graphical symbols for use on equipment - - IEC 61241-2-3 - Electrical apparatus for use in the presence of combustible dust - Part 2: Test methods - Section 3: Method for determining minimum ignition energy of dust/a

31、ir mixtures - - IEC 61340-2-3 - Electrostatics - Part 2-3: Methods of test for determining the resistance and resistivity of solid planar materials used to avoid electrostatic charge accumulation EN 61340-2-3 - ISO 7000 2004 Graphical symbols for use on equipment - Index and synopsis - - ISO 21898 -

32、 Packaging - Flexible intermediate bulk containers (FIBCs) for non-dangerous goods EN ISO 21898 - ASTM E582 - Standard test method for minimum ignition energy and quenching distance in gaseous mixtures - - BS EN 61340-4-4:2012 4 BS EN 61340-4-4:2012+A1:2015EN 61340-4-4:2012+A1:2015 2 61340-4-4 IEC:2

33、012 CONTENTS INTRODUCTION . 6 1 Scope . 7 2 Normative references . 8 3 Terms and definitions . 8 4 Classification 10 4.1 Principles of classification for FIBC . 10 4.1.1 Type A . 10 4.1.2 Type B . 10 4.1.3 Type C 10 4.1.4 Type D 10 4.2 Principles of classification and requirements for inner liners 1

34、1 4.2.1 Surface resistivity measurements for inner liners . 11 4.2.2 Special cases 11 4.2.3 Type L1 . 11 4.2.4 Type L2 . 11 4.2.5 Type L3 . 12 4.3 Combination of FIBC and inner liners 12 5 Safe use of FIBC 13 6 Labelling 14 7 Requirements for FIBC . 17 7.1 General remarks 17 7.2 Requirements for dus

35、t environments with ignition energies greater than 3 mJ (apply to Type B FIBC, Type C FIBC and Type D FIBC) 17 7.3 Requirements for vapour and gas atmospheres and for dust environments with ignition energies of 3 mJ or less . 17 7.3.1 Type C FIBC 17 7.3.2 Type D FIBC 18 8 Atmosphere for conditioning

36、, calibrating and testing . 18 8.1 Conditioning time 18 8.2 Electrical breakdown voltage and resistance to groundable point testing . 18 8.3 Ignition testing . 18 9 Test procedures . 18 9.1 Electrical breakdown voltage . 18 9.2 Ignition testing . 19 9.2.1 Apparatus 19 9.2.2 Establishing correct char

37、ging current . 26 9.2.3 Ignition tests 26 9.3 Resistance to groundable point . 28 9.3.1 Apparatus 28 9.3.2 Test procedure 29 10 Report 30 10.1 For all types of testing . 30 10.2 For electrical breakdown voltage testing 31 10.3 For ignition testing . 31 BS EN 61340-4-4:2012BS EN 61340-4-4:2012+A1:201

38、5IEC 61340-4-4:2012+A1:2014 5 791010121212121212131313131314141516191919191920202020202020212128283030313232333361340-4-4 IEC:2012 3 10.4 For resistance to groundable point testing . 31 10.5 For surface resistivity testing of inner liners . 31 10.6 For test reports issued by accredited testing autho

39、rities 31 Annex A (normative) Electrical breakdown voltage Typical voltage/time graphs 33 Annex B (normative) Polypropylene pellets for ignition testing . 34 Annex C (informative) Guidance on test methods for manufacturing quality control 35 Annex D (normative) Classification of hazardous areas and

40、zones. 37 Annex E (informative) Risks associated with cone discharges 38 Annex F (informative) Explanation for resistance and resistivity limits 39 Bibliography 40 Figure 1 Example of a label for Type B FIBC . 15 Figure 2 Example of a label for Type C FIBC . 15 Figure 3 Example of a label for Type D

41、 FIBC . 16 Figure 4 Example of a label for Type C FIBC designated earth bonding points . 16 Figure 5 Ignition probe . 20 Figure 6 Perforated metal plate for use in ignition probe 21 Figure 7 Gas control and mixing apparatus (schematic) . 22 Figure 8 FIBC filling rig (schematic) . 24 Figure 9 Corona

42、charging unit (schematic) . 25 Figure A.1 Example of voltage/time graph for material showing distinct breakdown 33 Figure A.2 Example of voltage/time graph for material showing reduction in rate of voltage rise because of conduction within the test material . 33 Table 1 Permissible configurations an

43、d requirements for Type L1 inner liners 11 Table 2 Permissible configurations and requirements for Type L2 inner liners 12 Table 3 Permissible configurations and requirements for Type L3 inner liners 12 Table 4 Use of different types of FIBC . 13 Table 5 Inner liners and FIBC: combinations that are

44、permissible and not permissible in hazardous explosive atmospheres 13 Table 6 Volume concentrations of flammable gas mixture 21 Table 7 Example of full sample description to be included in test report . 32 Table B.1 Particle size distribution of polypropylene pellets . 34 Table D.1 Classification of

45、 hazardous areas in IEC 60079-10-1 and IEC 60079-10-2 . 37 Table D.2 Classification of zones in IEC 60079-10-1 and IEC 60079-10-2 37 BS EN 61340-4-4:2012BS EN 61340-4-4:2012+A1:2015IEC 61340-4-4:2012+A1:2014 6 3333333536373940414217171818222324262735351314141515233436393961340-4-4 IEC:2012 3 10.4 Fo

46、r resistance to groundable point testing . 31 10.5 For surface resistivity testing of inner liners . 31 10.6 For test reports issued by accredited testing authorities 31 Annex A (normative) Electrical breakdown voltage Typical voltage/time graphs 33 Annex B (normative) Polypropylene pellets for igni

47、tion testing . 34 Annex C (informative) Guidance on test methods for manufacturing quality control 35 Annex D (normative) Classification of hazardous areas and zones. 37 Annex E (informative) Risks associated with cone discharges 38 Annex F (informative) Explanation for resistance and resistivity li

48、mits 39 Bibliography 40 Figure 1 Example of a label for Type B FIBC . 15 Figure 2 Example of a label for Type C FIBC . 15 Figure 3 Example of a label for Type D FIBC . 16 Figure 4 Example of a label for Type C FIBC designated earth bonding points . 16 Figure 5 Ignition probe . 20 Figure 6 Perforated

49、 metal plate for use in ignition probe 21 Figure 7 Gas control and mixing apparatus (schematic) . 22 Figure 8 FIBC filling rig (schematic) . 24 Figure 9 Corona charging unit (schematic) . 25 Figure A.1 Example of voltage/time graph for material showing distinct breakdown 33 Figure A.2 Example of voltage/time graph for material showing reduction in rate of voltage rise because of conduction within the test material . 33 Table 1 Permissible configurations