BS EN 13463-3-2005 Non-electrical equipment for potentially explosive atmospheres - Part 3 Protection by flame proof enclosure d.pdf

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1、BRITISH STANDARDBS EN 13463-3:2005Non-electrical equipment for use in potentially explosive Part 3: Protection by flameproof enclosure dThe European Standard EN 13463-3:2005 has the status of a British StandardICS 13.230g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44

2、g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58atmospheres Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon Jul 23 10:15:44 GMT+00:00 2007, Uncontrolled Copy, (c) BSIBS EN 13463-3:2005This British S

3、tandard was published under the authority of the Standards Policy and Strategy Committee on 18 November 2005 BSI 18 November 2005ISBN 0 580 46745 7National forewordThis British Standard is the official English language version of EN 13463-3:2005. The UK participation in its preparation was entrusted

4、 to Technical Committee FSH/23, Fire precautions in industrial and chemical plant, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests in

5、formed; monitor related international and European developments and promulgate them in the UK.A list of organizations represented on this committee can be obtained on request to its secretary.Additional informationThis standard was prepared by CEN/TC 305/WG 2, Equipment for use in potentially explos

6、ive atmospheres, and, in accordance with their general policy, it is written to be applicable to all potentially explosive atmospheres whether arising from gas, vapour or dust.Flameproof enclosures for non-electrical equipment are most likely to be useful, however, in applications where the equipmen

7、t may be exposed to explosive gas atmospheres, including applications where the exposure is to both gas and dust atmospheres and where the user wants equipment suitable for either type of service.In applications where the equipment may be exposed to explosive dust atmospheres only, other, simpler, e

8、nclosures, which provide a suitable ingress protection, are likely to be more effective. See BS EN 13463-5:2003 Non-electrical equipment for potentially explosive atmospheres. Protection by constructional safety c.Cross-referencesThe British Standards which implement international or European public

9、ations referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online.This publication does not purport to include all the neces

10、sary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard does not of itself confer immunity from legal obligations.Summary of pagesThis document comprises a front cover, an inside front cover, the EN title page, pages 2 to 18, an inside back

11、 cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issued since publicationAmd. No. Date CommentsLicensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon Jul 23 10:15:44 GMT+00:00 2007, Uncontrolled

12、Copy, (c) BSIEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 13463-3April 2005ICS 13.230English versionNon-electrical equipment for use in potentially explosiveatmospheres - Part 3: Protection by flameproof enclosure dAppareils non lectriques destins tre utiliss enatmosphres explosibles - Partie 3

13、 : protection parenveloppe antidflagrante dNicht-elektrische Gerte fr den Einsatz inexplosionsgefhrdeten Bereichen - Teil 3: Schutz durchdruckfeste Kapselung dThis European Standard was approved by CEN on 15 March 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which s

14、tipulate the conditions for giving 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 Central Secretariat or to any CEN member.This European Standard e

15、xists in three official versions (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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bod

16、ies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR S

17、TANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2005 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13463-3:2005: ELicensed Copy: Institute Of Technolo

18、gy Tallaght, Institute of Technology, Mon Jul 23 10:15:44 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN 13463-3:2005 (E) 2 Contents Page Foreword.3 Introduction .4 1 Scope .5 2 Normative references .5 3 Terms and Definitions .5 4 Determination of suitability and general requirements .6 4.1 Determinat

19、ion of suitability .6 4.2 General requirements.6 5 Flameproof joints.6 6 Cemented joints.6 7 Operating rods .7 8 Supplementary requirements for shafts and bearings.7 9 Light transmitting parts .7 10 Breathing and draining devices which form part of a flameproof enclosure.7 11 Fasteners, associated h

20、oles and closing devices .7 12 Materials and mechanical strength of enclosures; materials inside the enclosure .7 13 Entries for flameproof enclosures .7 14 Verification and tests .8 15 Type tests .8 15.1 Type testing of flameproof non-electrical equipment for explosive gas or vapour/air mixtures.8

21、15.2 Type testing of non-electrical electrical equipment for explosive gas or vapour/air mixtures.8 16 Routine tests .9 17 Switchgear.9 18 Lampholders and lampcaps .9 19 Non-metallic enclosures and non-metallic parts of enclosures .9 20 Apparatus using capillaries.9 21 Instructions and documentation

22、.9 21.1 User instructions .9 21.2 Technical documentation .9 22 Marking .10 Annex A (normative) Additional requirements for crimped ribbon elements of breathing and draining devices.11 Annex B (normative) Additional requirements for elements, with non-measurable paths, of breathing and draining devi

23、ces .12 Annex C (normative) Additional requirements for flameproof entries .13 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 94/9/EC.14 Bibliography .18 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon J

24、ul 23 10:15:44 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN 13463-3:2005 (E) 3 Foreword This document (EN 13463-3:2005) has been prepared by Technical Committee CEN/TC 305 “Potentially explosive atmospheres - Explosion prevention and protection”, the secretariat of which is held by DIN. This Europea

25、n Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2005, and conflicting national standards shall be withdrawn at the latest by October 2005. This document has been prepared under a mandate given to CEN

26、by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 94/4EC of 23 March 1994. For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This document is to specify the requirements f

27、or the type of protection “Protection by flameproof enclosure” for equipment intended for use in potentially explosive atmospheres and should be used in conjunction with EN 13463-1 Non-electrical equipment for potentially explosive atmospheres Basic method and requirements. According to the CEN/CENE

28、LEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malt

29、a, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon Jul 23 10:15:44 GMT+00:00 2007, Uncontrolled Copy, (c) BSIEN 13463-3:2005 (E) 4 Introduction Some types of non-el

30、ectrical equipment intended for use in potentially explosive atmospheres of gas, vapour, mist and/or combustible dust, contain effective ignition sources in normal operation and these have to be prevented from becoming an ignition source for the surrounding atmosphere in which they are used. One way

31、 of achieving this is to enclose the ignition sources so that an ignition of the atmosphere inside the enclosure is not transmitted to the outside atmosphere. This document describes one such way, known as protection by Flameproof enclosure d. The basic principle of ignition protection by the use of

32、 a flameproof enclosure, is that gases, or vapour, may enter the enclosure through the cover joints / flanges and if an explosive atmosphere inside the enclosure ignites, neither the enclosure will be deformed significantly, nor flame transmitted through the joints / flanges to the explosive atmosph

33、ere outside. For this reason the enclosure has to be both robust and have dimensionally controlled cover joints / flanges with maximum allowable safe gaps appropriate for the types of explosive gas / vapour likely to occur inside the equipment. Since its conception, protection by flameproof enclosur

34、e has been developed to allow many kinds of continuously sparking equipment to be used safely in places where a potentially explosive atmosphere exists. For electrical equipment, this type of protection is well known for protecting power arcing components and is defined and described in EN 60079-1.

35、As the electrical equipment standard contains the generic testing, verification and marking requirements, unnecessary duplication of the requirements in this non-electrical equipment document is avoided by cross reference to the electrical standard. In this document, only those differences necessary

36、 for the purpose of providing protection for non-electrical equipment are written in full. In contrast to this document EN 60079-1 does not consider explosive atmospheres formed by dusts, except for Group I, category M2 electrical equipment, where its associated general requirements document, EN 60079-0, states that flameproof equipment designed, constructed and tested for use in explosive atmospheres o