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Standards Council of Canada

[solr_document_6]

CSA C60079-13:19

Explosive atmospheres — Part 13: Equipment protection by pressurized room “p” and artificially ventilated room “v” / Atmosphères explosives — Partie 13 : Protection du matériel par salle à surpression interne « p » et salle à ventilation artificielle « v »

This part of IEC 60079 gives requirements for the design, construction, assessment,
verification and marking of rooms used to protect internal equipment:
– located in a Zone 1 or Zone 2 or Zone 21 or Zone 22 explosive atmosphere (an area
normally requiring an equipment protection level (EPL) Gb, Gc, Db or Dc) without an
internal source of gas/vapour release and protected by pressurization;
– located in a Zone 2 explosive atmosphere (an area normally requiring EPL Gc) with or
without an internal source of gas/vapour release and protected by artificial ventilation;
– located in a non-hazardous area, containing an internal source of gas/vapour release and
protected by artificial ventilation;
– located in a Zone 1 or Zone 2 or Zone 21 or Zone 22 explosive atmosphere (an area
normally requiring EPL Gb, Gc, Db or Dc), containing an internal source of gas/vapour
release and protected by both pressurization and artificial ventilation.
The term "room" used in this document includes single rooms, multiple rooms, a complete
building or a room contained within a building. A room is intended to facilitate the entry of
personnel and includes inlet and outlet ducts. An acoustic hood and other like enclosures
designed to permit the entry of personnel can be considered as a room.
This document also includes requirements related safety devices and controls necessary to
ensure that artificial ventilation, purging and pressurization is established and maintained.
A room assembled or constructed on site, can be either on land or off-shore. The room is
primarily intended for installation by an end-user but could be constructed and assessed at a
manufacturer’s facility, where the final construction such as ducting can be completed on site.
Rooms can be located in an explosive gas atmosphere requiring EPL Gb or Gc, or a
combustible dust atmosphere requiring EPL Db, or Dc.
This document does not specify the methods that may be required to ensure adequate air
quality for personnel with regard to toxicity and temperature within the room. National or other
regulations and requirements may exist to ensure the safety of personnel in this regard.
Protection of rooms by using an inert gas or a flammable gas is outside of the scope of this
document. It is recognized that such applications are special cases, which in part may be
addressed using the principles from IEC 60079-2, but in all probability will also be the subject
of additional, stringent engineering standards, procedures and practices. Pressurized
enclosures for equipment that are not intended to facilitate the entry of personnel are
addressed in IEC 60079-2, and are not in the scope of this document.
NOTE Maintenance recommendations are contained in Annex A until they can be included in IEC 60079-17.
This document supplements and modifies the general requirements of IEC 60079-0, except
exclusions as indicated in Table 1. Where a requirement of this document conflicts with a
requirement of IEC 60079-0, the requirement of this document takes precedence.

La présente partie de l’IEC 60079 définit les exigences relatives à la conception, la
construction, l'évaluation, la vérification et le marquage de salles utilisées pour protéger le
matériel interne:
– situées dans une atmosphère explosive de Zone 1 ou de Zone 2 ou de Zone 21 ou de
Zone 22 (un emplacement exigeant généralement un niveau de protection du matériel
(EPL - Equipment Protection Level) Gb, Gc, Db ou Dc) n'incluant pas de source interne de
dégagement de gaz/vapeur et protégées par surpression interne;
– situées dans une atmosphère explosive de Zone 2 (un emplacement exigeant
généralement l’EPL Gc) incluant ou n’incluant pas de source interne de dégagement de
gaz/vapeur et protégées par ventilation artificielle;
– situées dans un emplacement non dangereux incluant une source interne de dégagement
de gaz/vapeur et protégées par ventilation artificielle;
– situées dans une atmosphère explosive de Zone 1 ou de Zone 2 ou de Zone 21 ou de
Zone 22 (un emplacement exigeant généralement l’EPL Gb, Gc, Db ou Dc) incluant une
source interne de dégagement de gaz/vapeur et protégées à la fois par surpression
interne et par ventilation artificielle.
Le terme «salle» utilisé dans le présent document désigne des salles uniques, plusieurs
salles, un bâtiment complet ou une salle contenue dans un bâtiment. Destinée à faciliter
l’entrée du personnel, une salle inclut les canalisations d'entrée et de sortie. Une hotte
acoustique et d’autres enveloppes similaires destinées à permettre l’entrée du personnel
peuvent être considérées comme une salle.
Le présent document couvre également les exigences applicables aux dispositifs et contrôles
de sécurité nécessaires à l'établissement et au maintien de la ventilation artificielle, du
balayage et de la surpression interne.
Une salle montée ou construite sur site peut se trouver à terre ou en mer. La salle est
principalement destinée à être installée par un utilisateur final, mais elle peut être construite
et évaluée à l'usine du fabricant lorsque les opérations de construction finale telles que la
réalisation des canalisations peuvent être effectuées sur site.
Les salles peuvent être situées dans un emplacement à atmosphère explosive gazeuse
exigeant l’EPL Gb ou Gc ou à atmosphère de poussière combustible exigeant l’EPL Db ou Dc.
Le présent document ne précise pas les méthodes qui peuvent être exigées pour garantir au
personnel une qualité d'air appropriée en matière de toxicité et de température dans la salle.
À cet égard, des exigences et règlements nationaux ou autres destinés à garantir la sécurité
du personnel peuvent exister.
La protection des salles en utilisant un gaz inerte ou un gaz inflammable ne relève pas du
domaine d'application du présent document. Il est admis que ces applications sont des cas
particuliers qui peuvent en partie être traités en appliquant les principes de l’IEC 60079-2
mais qui feront probablement également l'objet d'autres normes, procédures et pratiques
techniques rigoureuses. Les enveloppes à surpression pour matériel qui ne sont pas destinées à faciliter l’entrée du personnel sont traitées dans l’IEC 60079-2. Elles ne relèvent
pas du domaine d’application du présent document.
NOTE En attendant leur intégration future dans l’IEC 60079-17, les recommandations d’entretien sont données à
l’Annexe A.
Le présent document complète et modifie les exigences générales de l’IEC 60079-0, à
l'exception des exclusions indiquées dans le Tableau 1. En cas de divergence entre l'une des
exigences du présent document et l'une des exigences de l’IEC 60079-0, l'exigence
correspondante du présent document prévaut.

Status: Standard
SDO: CSA
Language: English
Publish date: 2019-04-01
ICS Codes: 29.260.20;
Standard Number: CSA C60079-13:19

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