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      • CSA Group
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      • Industrial Products (Hazloc, Energy and Power Equipment and Machinery) - Canadia

      Codes & Standards - Purchase

      CSA C22.2 NO. 60079-2:16 (R2021)

      Explosive atmospheres - Part 2: Equipment protection by pressurized enclosure "p" (Adopted IEC 60079-2:2014, sixth edition, 2014-07, with Canadian deviations)
      SKU: 2424505 Published by CSA Group Publication Year 2016 Reaffirmed in 2021 175 pages

      Product Details

      • Preface/Scope

      CSA Preface


      This is the second edition of CAN/CSA-C22.2 No. 60079-2, Explosive atmospheres — Part 2: Equipment protection by pressurized enclosure p, which is an adoption, with Canadian deviations, of the identically titled IEC (International Electrotechnical Commission) Standard 60079-2 (sixth edition, 2014-07). It supersedes the previous edition published in 2012 as CAN/CSA-C22.2 No. 60079-2 (adopted IEC 60079-2:2007). It is one in a series of Standards issued by CSA Group under Part II of the Canadian Electrical Code.


      For brevity, this Standard will be referred to as CAN/CSA-C22.2 No. 60079-2 throughout.


      This Standard is intended to be used in conjunction with CAN/CSA-C22.2 No. 60079-0, Explosive atmospheres — Part 0: Equipment — General requirements.


      Changes for this edition include


      a) elimination of the additional note for Clause 14, as the note in the IEC standard covers this; and


      b) the addition of annexes with requirements for the use of cells and batteries.


      Scope


      This part of IEC 60079 contains the specific requirements for the construction and testing of electrical equipment with pressurized enclosures, of type of protection p, intended for use in explosive gas atmospheres or explosive dust atmospheres. It also includes the requirements for pressurized enclosures containing a limited release of a flammable substance.


      This standard supplements and modifies the general requirements of IEC 60079-0. Where a requirement of this standard conflicts with a requirement of IEC 60079-0, the requirements of this standard take precedence.


      This standard does not include the requirements for:


      - pressurized enclosures where the containment system may release


      a) air with an oxygen content greater than normal, or


      b) oxygen in combination with inert gas where the oxygen is in a proportion greater than 21 %.


      - pressurized rooms or analyser houses; see IEC 60079-13;


      - pressurized enclosures used where explosives or pyrotechnics are present;


      - pressurized enclosures used where hybrid mixtures of gas/vapour and combustible dust are present;


      - pressurized enclosures used where pyrophoric substances such as explosives or propellants containing their own oxidizers are present


      - pressurized enclosures with an internal source of release of combustible dust.


      NOTE When the user acts in the role of the manufacturer, it is typically the user’s responsibility to ensure that all relevant parts of this standard are applied to the manufacturing and testing of the equipment.


      This Standard has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group.


      --------------------------------------------------------------------------------------------------------------------------------


      Préface CSA


      Ce document constitue la deuxième édition de la CAN/CSA-C22.2 nº 60079-2, Atmosphères explosives — Partie 2 : Protection du matériel par enveloppe à surpression interne «p». Il s’agit de l’adoption, avec les exigences propres au Canada, de la norme IEC (Commission Électrotechnique Internationale) 60079-2 (sixième édition, 2014-07) qui porte le même titre. Il remplace l’édition antérieure publiée en 2012 qui portait la désignation CAN/CSA-C22.2 nº 60079-2 (norme IEC 60079-2:2007 adoptée). Il fait partie d’une série de normes publiées par le Groupe CSA qui constituent le Code canadien de l’électricité, Deuxième partie.


      Par souci de brièveté, tout au long de ce document, il sera appelé «CAN/CSA-C22.2 nº 60079-2».


      Cette norme est conçue pour être utilisée avec la CAN/CSA-C22.2 nº 60079-0, Atmosphères explosives — Partie 0 : Matériel — Exigences générales.


      Les changements apportés à cette édition comprennent


      a) la suppression de la note supplémentaire de l’article 14, car la note de la norme IEC couvre ce détail ; et


      b) l’ajout des annexes sur les exigences relatives à l’utilisation de cellules et de piles.


      Cette norme est jugée convenable à l’évaluation de la conformité selon le domaine d’application établi dans la norme.


      Cette norme a été élaborée conformément aux exigences du Conseil canadien des normes concernant les Normes nationales du Canada. Cette norme a été publiée en tant que Norme nationale du Canada par Groupe CSA.


      Domaine d'application


      La présente partie de l’IEC 60079 contient les exigences spécifiques pour la construction et les essais des matériels électriques avec enveloppes à surpression interne à mode de protection p, destinés à l'utilisation dans les atmosphères explosives gazeuses ou les atmosphères de poussière explosives. Elle inclut également les exigences pour les enveloppes à surpression interne contenant un dégagement limité de substance inflammable.


      La présente Norme complète et modifie les exigences générales de l’IEC 60079-0. Lorsqu'une exigence de la présente Norme entre en conflit avec une exigence de l’IEC 60079-0, c'est l'exigence de la présente Norme qui prévaut.


      La présente Norme ne comprend pas les exigences pour:


      - les enveloppes à surpression interne lorsque le système de confinement peut dégager


      a) de l'air avec une teneur en oxygène supérieure à la normale, ou


      b) un mélange d'oxygène et de gaz inerte dans une proportion d'oxygène supérieure à 21 %;


      - les salles à surpression interne ou les bâtiments pour analyseurs; voir l’IEC 60079-13;


      - les enveloppes à surpression interne utilisées lorsque des explosifs ou des éléments pyrotechniques sont présents;


      - les enveloppes à surpression interne utilisées lorsque des mélanges hybrides de gaz/vapeur et de poussière combustible sont présents;


      - les enveloppes à surpression interne utilisées lorsque des substances pyrophoriques telles que des explosifs ou des charges de poudre contenant leurs propres oxydants sont présentes;


      - les enveloppes à surpression interne avec une source interne de dégagement de poussière combustible.


      NOTE Lorsque l'utilisateur assume le rôle du fabricant, il lui incombe normalement de s'assurer que toutes les parties concernées de la présente Norme sont appliquées à la fabrication et aux essais du matériel.

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