EN 60079-10-2:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Eksplozivne atmosfere - 10-2. del: Razdelitev eksplozijsko ogroženih prostorov - Eksplozivne prašne atmosfere (IEC 60079-10-2:2009)Explosionsfähige Atmosphäre – Teil 10-2: Einteilung der Bereiche - Staubexplosionsgefährdeten BereicheAtmosphères explosives -- Partie 10-2: Classification des emplacements - Atmosphères explosives poussiéreusesExplosive atmospheres -- Part 10-2: Classification of areas - Combustible dust atmospheres29.260.20Electrical apparatus for explosive atmospheresICS:Ta slovenski standard je istoveten z:EN 60079-10-2:2009SIST EN 60079-10-2:2009en,fr01-oktober-2009SIST EN 60079-10-2:2009SLOVENSKI
STANDARDSIST EN 61241-10:20051DGRPHãþD

EUROPEAN STANDARD EN 60079-10-2 NORME EUROPÉENNE
EUROPÄISCHE NORM August 2009
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: Avenue Marnix 17, B - 1000 Brussels
© 2009 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60079-10-2:2009 E
ICS 29.260.20 Supersedes EN 61241-10:2004
English version
Explosive atmospheres -
Part 10-2: Classification of areas -
Combustible dust atmospheres (IEC 60079-10-2:2009)
Atmosphères explosives -
Partie 10-2: Classification des emplacements -
Atmosphères explosives poussiéreuses (CEI 60079-10-2:2009)
Explosionsfähige Atmosphäre -
Teil 10-2: Einteilung der Bereiche -
Staubexplosionsgefährdeten Bereiche (IEC 60079-10-2:2009)
This European Standard was approved by CENELEC on 2009-06-01. CENELEC 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 references concerning such national standards may be obtained on application to the Central Secretariat or to 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 Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom.
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Foreword The text of document 31J/166/FDIS, future edition 1 of IEC 60079-10-2, prepared by SC 31J, Classification of hazardous areas and installation requirements, of IEC TC 31, Equipment for explosive atmospheres, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60079-10-2 on 2009-06-01. This European Standard supersedes EN 61241-10:2004. The significant technical changes with respect to EN 61241-10:2004 are as follows: – the hazards presented by dust have been clarified; – dust groups have been introduced; – Annex D explaining Equipment Protection Levels (EPLs) has been introduced; – 1 m of usual extent of zone 22 beyond zone 21 has been expanded to 3 m. The following dates were fixed: – latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement
(dop)
2010-03-01 – latest date by which the national standards conflicting
with the EN have to be withdrawn
(dow)
2012-06-01 Annexes ZA and ZB have been added by CENELEC. __________ Endorsement notice The text of the International Standard IEC 60079-10-2:2009 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60079-1 NOTE
Harmonized as EN 60079-1:2007 (not modified). IEC 60079-2 NOTE
Harmonized as EN 60079-2:2007 (not modified). IEC 60079-5 NOTE
Harmonized as EN 60079-5:2007 (not modified). IEC 60079-6 NOTE
Harmonized as EN 60079-6:2007 (not modified). IEC 60079-7 NOTE
Harmonized as EN 60079-7:2007 (not modified). IEC 60079-11 NOTE
Harmonized as EN 60079-11:2007 (not modified). IEC 60079-14 NOTE
Harmonized as EN 60079-14:2008 (not modified). IEC 60079-15 NOTE
Harmonized as EN 60079-15:2005 (not modified). IEC 60079-18 NOTE
Harmonized as EN 60079-18:2004 (not modified). IEC 60079-26 NOTE
Harmonized as EN 60079-26:2007 (not modified). IEC 60079-28 NOTE
Harmonized as EN 60079-28:2007 (not modified). __________
- 3 - EN 60079-10-2:2009 Annex ZA (normative)
Normative references to international publications with their corresponding European publications
The following referenced 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.
NOTE
When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies.
Publication Year Title EN/HD Year
IEC 60079-0 -1) Explosive atmospheres -
Part 0: Equipment - General requirements EN 60079-0 20092)
1) Undated reference. 2) Valid edition at date of issue. SIST EN 60079-10-2:2009

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Annex ZB (informative)
ATEX Categories and Equipment Protection Levels (EPLs) This European Standard has been written to incorporate the concept of Equipment Protection Levels (EPLs). EPLs are analogous to the ATEX Categories, indeed the definitions are identical. Wherever there is a reference to an EPL in the text it should be equated with the corresponding ATEX Category: - EPL ‘Ga’ equates to ATEX Category 1G; - EPL ‘Gb’ equates to ATEX Category 2G; - EPL ‘Gc’ equates to ATEX Category 3G; - EPL ‘Da’ equates to ATEX Category 1D; - EPL ‘Db’ equates to ATEX Category 2D; - EPL ‘Dc’ equates to ATEX Category 3D.
IEC 60079-10-2Edition 1.0 2009-04INTERNATIONAL STANDARD NORME INTERNATIONALEExplosive atmospheres –
Part 10-2: Classification of areas – Combustible dust atmospheres
Atmosphères explosives –
Partie 10-2: Classement des emplacements – Atmosphères explosives poussiéreuses
INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE VICS 29.260.20 PRICE CODECODE PRIXISBN 2-8318-1037-3
– 2 – 60079-10-2 © IEC:2009 CONTENTS FOREWORD.3 INTRODUCTION.5 1 Scope.6 2 Normative references.6 3 Terms and definitions.7 4 Area classification.9 4.1 General.9 4.2 Area classification procedure for explosive dust atmospheres.10 5 Sources of release.11 5.1 General.11 5.2 Dust containment.11 5.3 Identification and gradation of sources of release.11 6 Zones.12 6.1 General.12 6.2 Zones.12 6.3 Extent of zones.13 6.3.1 General.13 6.3.2 Zone 20.13 6.3.3 Zone 21.13 6.3.4 Zone 22.14 7 Dust layer hazard.14 8 Documentation.14 8.1 General.14 8.2 Drawings, data sheets and tables.15 Annex A (informative)
Area classification application.17 Annex B (informative)
Risk of fire from hot surface ignition of dust layer.22 Annex C (informative)
Housekeeping.23 Annex D (informative)
Introduction of an alternative risk assessment method encompassing ‘equipment protection levels’ for Ex equipment.25 Bibliography.30
Figure 1 – Identification of zones on drawings.16 Figure A.1 – Bag emptying station within a building and without exhaust ventilation.18 Figure A.2 – Bag emptying station with exhaust ventilation.19 Figure A.3 – Cyclone and filter with clean outlet outside building.20 Figure A.4 – Drum tipper within a building without exhaust ventilation.21
Table 1 – Designation of zones depending on presence of dust.12 Table D.1 – Traditional relationship of EPLs to zones (no additional risk assessment).27 Table D.2 – Description of risk of ignition protection provided.28
60079-10-2 © IEC:2009 – 3 – INTERNATIONAL ELECTROTECHNICAL COMMISSION ___________
EXPLOSIVE ATMOSPHERES –
Part 10-2: Classification of areas –
Combustible dust atmospheres
FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60079-10-2 has been prepared by subcommittee 31J: Classification of hazardous areas and installation requirements, of IEC technical committee 31: Equipment for explosive atmospheres. This first edition of IEC 60079-10-2 cancels and replaces the first edition of IEC 61241-10 published in 2004. This edition constitutes a technica
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