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 BS EN 13463-3:2005This British Standard was published under the authority of the Standards Policy and Strategy Committee on 18 November 2005 BSI 18 November 2005ISBN 0
3、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 to Technical Committee FSH/23, Fire precautions in industrial and chemical plant, which has the responsibility to: aid enquirers to und
4、erstand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep UK interests informed; monitor related international and European developments and promulgate them in the UK.A list of organizations represented on thi
5、s 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 explosive atmospheres, and, in accordance with their general policy, it is written to be applicable to all potentially explosive atmospheres w
6、hether arising from gas, vapour or dust.Flameproof enclosures for non-electrical equipment are most likely to be useful, however, in applications where the equipment may be exposed to explosive gas atmospheres, including applications where the exposure is to both gas and dust atmospheres and where t
7、he user wants equipment suitable for either type of service.In applications where the equipment may be exposed to explosive dust atmospheres only, other, simpler, enclosures, which provide a suitable ingress protection, are likely to be more effective. See BS EN 13463-5:2003 Non-electrical equipment
8、 for potentially explosive atmospheres. Protection by constructional safety c.Cross-referencesThe British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence
9、 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 necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard does not of itself c
10、onfer 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 cover and a back cover.The BSI copyright notice displayed in this document indicates when the document was last issued.Amendments issue
11、d since publicationAmd. No. Date CommentsEUROPEAN 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 enatmos
12、phres explosibles - Partie 3 : 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
13、Internal Regulations which stipulate 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 mem
14、ber.This European Standard exists 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 ar
15、e the national standards bodies 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 King
16、dom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT 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: EEN 13463
17、-3:2005 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 5 2 Normative references 5 3 Terms and Definitions .5 4 Determination of suitability and general requirements .6 4.1 Determination of suitability 6 4.2 General requirements6 5 Flameproof joints.6 6 Cemented joints.6 7 Operating rods .7 8
18、Supplementary requirements for shafts and bearings7 9 Light transmitting parts 7 10 Breathing and draining devices which form part of a flameproof enclosure7 11 Fasteners, associated holes and closing devices .7 12 Materials and mechanical strength of enclosures; materials inside the enclosure .7 13
19、 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 mixtures8 15.2 Type testing of non-electrical electrical equipment for explosive gas or vapour/air mixtures.8 16 Routine tests 9
20、 17 Switchgear9 18 Lampholders and lampcaps .9 19 Non-metallic enclosures and non-metallic parts of enclosures .9 20 Apparatus using capillaries9 21 Instructions and documentation9 21.1 User instructions .9 21.2 Technical documentation .9 22 Marking .10 Annex A (normative) Additional requirements fo
21、r crimped ribbon elements of breathing and draining devices11 Annex B (normative) Additional requirements for elements, with non-measurable paths, of breathing and draining devices .12 Annex C (normative) Additional requirements for flameproof entries 13 Annex ZA (informative) Relationship between t
22、his European Standard and the Essential Requirements of EU Directive 94/9/EC14 Bibliography 18 EN 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
23、 of which is held by DIN. This European 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
24、prepared under a mandate given to CEN 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 doc
25、ument is to specify the requirements for 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
26、requirements“. According to the CEN/CENELEC 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, It
27、aly, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EN 13463-3:2005 (E) 4 Introduction Some types of non-electrical equipment intended for use in potentially explosive atmospheres of gas, vapour, mist an
28、d/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 of achieving this is to enclose the ignition sources so that an ignition of the atmosphere insi
29、de 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 a flameproof enclosure, is that gases, or vapour, may enter the enclosure through the cover j
30、oints / 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 atmosphere outside. For this reason the enclosure has to be both robust and have dimensionally contro
31、lled 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 enclosure has been developed to allow many kinds of continuously sparking equipment to be used safely
32、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. As the electrical equipment standard contains the generic testing, verification and marking re
33、quirements, 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 for the purpose of providing protection for non-electrical equipment are written in full. In
34、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 a
35、tmospheres of firedamp (explosive mine gas consisting mainly of methane) needs no alteration, or further testing to allow it to be used where a coal dust cloud is present. The concept of protecting equipment against dust cloud ignition by testing it in a gas / air mixture is also accepted in this do
36、cument for both Group I, Category M2 mining equipment, and Group II, Category 2G and 2D non-mining equipment. This is because it introduces an acceptable safety factor against ignition and it allows a much more simple method of testing and verifying its explosion protection properties. Examples of n
37、on-electrical types of equipment that can be protected by flameproof enclosure are: a) Equipment with potentially hot rubbing surfaces exceeding the ignition temperature of the atmosphere surrounding them, e.g. friction clutches and brake linings b) equipment that has to operate at high temperature
38、to function correctly, such as catalytic converters in the exhaust systems of flameproof internal combustion engines, or hot catalytic pellistors used in the sensors of flammable gas measuring instruments, c) equipment producing incendive frictional sparks in normal operation. Little equipment is cu
39、rrently made to flameproof designs for dust applications, because alternative designs using dust tight enclosures are usually cheaper. There are however non-mining applications where both dust and gas are present, where this document may be applicable. Where dust alone is present, there is usually n
40、o mechanism to create inside an enclosure an explosive dust cloud, although deposits of dust may form. The risk from a fire involving dust deposits inside the enclosure is not considered by this document, as it falls outside the concept of protection by flameproof enclosure. EN 13463-3:2005 (E) 5 1
41、Scope This document specifies the requirements for the design, assessment, construction and testing of equipment intended for use in potentially explosive gas or dust atmospheres, protected by the type of protection: Flameproof enclosure “d“. This document supplements the requirements in EN 13463-1,
42、 the contents of which also apply in full to equipment constructed to this document. Equipment complying with the relevant clauses of this document meets the requirements for the following categories: Equipment Group I Category M2 that does not contain an ignition source arising from severe operatin
43、g conditions, in particular arising from rough handling and changing environmental conditions; Equipment Group II Category 2G or 2D that does not contain an ignition source arising as a result of foreseeable malfunctions. The type of ignition protection described in the document can be used either o
44、n its own or in combination with other types of ignition protection to meet the requirements for equipment of Group I categories M2, or Group II categories 1 and 2 depending on the ignition hazard assessment in EN 13463-1. NOTE The requirements for Group I Category M1 equipment are given in EN 50303
45、, which specifies the requirements for both electrical and non-electrical equipment. This document shall not be used for equipment intended for use in sulphur dust and organic peroxides because of the difficulty of testing and specifying the requirements This document does not apply to the ignition
46、protection of electrical equipment, or reciprocating internal combustion engines. For these requirements reference shall be made to EN 60079-0 and EN 60079-1 for electrical equipment and EN 1834-1, -2 and -3 for reciprocation internal combustion engines. 2 Normative references The following referenc
47、ed 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 1127-1:1997, Explosive atmospheres Explosion prevention and protecti
48、on Part 1: Basic concepts and methodology. EN 1127-2:2002, Explosive atmospheres Explosion prevention and protection Part 2: Basic concepts and methodology for mining. EN 13463-1:2001, Non-electrical equipment for potentially explosive atmospheres Part 1: Basic method and requirements. EN 60079-0:20
49、04, Electrical apparatus for explosive gas atmospheres Part 0: General requirements. EN 60079-1:2004, Electrical apparatus for potentially explosive atmospheres Part 1: Flameproof enclosure d. 3 Terms and Definitions For the purposes of this document, the terms and definitions given in EN 1127-1:1997, EN 1127-2:2002, EN 13463-1:2001, EN 60079-0:2004 and EN 60079-1:2004 and the following apply. 3.1 flameproof enclosure type of protection in which the parts which can ignite an explosive atmosphere are placed in an enclosure which ca
