SIST EN 60079-13:2018

Explosive atmospheres - Part 13: Equipment protection by pressurized room "p" and artificially ventilated room "v" (IEC 60079-13:2017)

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.

Explosionsgefährdete Bereiche - Teil 13: Schutz von Einrichtungen durch einen überdruckgekapselten Raum "p" und einen fremdbelüfteten Raum "v" (IEC 60079-13:2017)

Atmosphères explosives - Partie 13: Protection du matériel par salle à surpression interne "p" et salle ventilée artificiellement "v" (IEC 60079-13:2017)

IEC 60079-13:2017 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 n'incluant pas de source interne de dégagement de gaz/vapeur et protégées par surpression interne;
– situées dans une atmosphère explosive de Zone 2 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 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.
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.
Cette deuxième édition annule et remplace la première édition parue en 2010. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l’édition précédente:
a) modification du titre du présent document pour inclure l’expression salle en ventilation artificielle «v» en plus de salle en surpression interne «p»;
b) ajout des modes de protection «pb», «pc», et «vc» et suppression des modes de protection «px», «py», «pz» et «pv»;
c) définition des différences entre les modes de protection par surpression interne et par ventilation artificielle;
d) suppression de la protection des salles par un gaz inerte ou un gaz inflammable relevant du domaine d’application du présent document;
e) ajout d’une annexe informative pour inclure des exemples d’applications dans lesquelles les modes de protection par surpression interne et/ou par ventilation artificielle peuvent être utilisés ainsi que des lignes directrices correspondantes.

Eksplozivne atmosfere - 13. del: Zaščita opreme z zaprtimi prostori z nadtlakom "p" in umetno prezračevani prostori (IEC 60079-13:2017)

Ta del standarda IEC 60079 določa zahteve za načrtovanje, gradnjo, ocenjevanje, preverjanje in označevanje prostorov, ki se uporabljajo za zaščito notranje opreme:
– v eksplozivni atmosferi cone 1, 2, 21 ali 22 (območje, ki običajno zahteva stopnjo zaščite opreme (EPL) Gb, Gc, Db ali Dc) brez notranjega vira izpusta plinov/hlapov in z zaščito z nadtlakom;
– v eksplozivni atmosferi cone 2 (območje, ki običajno zahteva stopnjo zaščite opreme Gc) z notranjim virom izpusta plinov/hlapov ali brez njega in z zaščito z umetnim prezračevanjem;
– v nenevarnem območju z notranjim virom izpusta plinov/hlapov in zaščito z umetnim prezračevanjem;
– v eksplozivni atmosferi cone 1, 2, 21 ali 22 (območje, ki običajno zahteva stopnjo zaščite opreme Gb, Gc, Db ali Dc) z notranjim virom izpusta plinov/hlapov ter zaščito z nadtlakom in umetnim prezračevanjem.
Izraz »prostor«, ki se uporablja v tem dokumentu, vključuje posamezne prostore, več prostorov, celotno zgradbo ali prostor znotraj zgradbe. Prostor je namenjen zagotavljanju lažjega vstopa osebja ter vključuje vhodne in izhodne kanale. Kot prostor se lahko obravnavajo akustični okrovi in druga podobna ohišja, namenjena vstopu osebja.
Ta dokument zajema tudi z zahtevami povezane varnostne naprave in kontrolnike, ki so potrebni za vzpostavitev in vzdrževanje umetnega prezračevanja, čiščenja ter ustvarjanje nadtlaka.
Prostor, sestavljen ali izdelan na mestu uporabe, je lahko na kopnem ali na vodi. Prostor je primarno namenjen namestitvi, ki jo izvede končni uporabnik, vendar je lahko izdelan in ocenjen v proizvodnem obratu, končna namestitev pa se opravi na mestu uporabe.
Prostor je lahko v atmosferi eksplozivnega plina, ki zahteva stopnjo zaščite opreme Gb ali Gc, ali v atmosferi gorljivega prahu, ki zahteva stopnjo zaščite opreme Db ali Dc.
Ta dokument ne določa metod, ki bi morda bile potrebne za zagotavljanje ustrezne kakovosti zraka za osebje v zvezi s toksičnostjo in temperaturo v prostoru. Za zagotavljanje tovrstne varnosti osebja obstajajo morda nacionalni ali drugi predpisi in zahteve.
Zaščita prostorov z uporabo inertnega plina ali gorljivega plina ne spada na področje uporabe tega dokumenta. Takšni primeri uporabe se obravnavajo kot posebni primeri, ki se jih deloma lahko obravnava na podlagi načel iz standarda IEC 60079-2, vendar pa bodo najverjetneje tudi predmet dodatnih, strogih tehničnih standardov, postopkov in praks. Ohišja z nadtlakom za opremo, ki ni namenjena zagotavljanju lažjega vstopa osebja, so obravnavana v standardu IEC 60079-2 in ne spadajo na področje uporabe tega dokumenta.
OPOMBA: Priporočila za vzdrževanje so v dodatku A, dokler se ne vključijo v IEC 60079-17.
Ta dokument dopolnjuje in spreminja splošne zahteve standarda IEC 60079-0, razen izključitev, kot je prikazano v preglednici 1. Kadar je zahteva iz tega dokumenta v nasprotju z zahtevo iz standarda IEC 60079-0, ima prednost zahteva iz tega dokumenta.

General Information

• Status: Published
• Publication Date: 09-Jan-2018
• ICS: 29.260.20 - Electrical apparatus for explosive atmospheres
• Technical Committee: EXP - Electrical apparatus for explosive atmospheres
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 03-Nov-2017
• Due Date: 08-Jan-2018
• Completion Date: 10-Jan-2018
• Ref Project: EN 60079-13:2017 - Explosive atmospheres - Part 13: Equipment protection by pressurized room "p" and artificially ventilated room "v"

Relations

• Replaces: SIST EN 60079-13:2011 - Explosive atmospheres - Part 13: Equipment protected by pressurized rooms p (IEC 60079-13:2010)
• Effective Date: 10-Oct-2017
• Replaces: SIST EN 60079-13:2011 - Explosive atmospheres - Part 13: Equipment protected by pressurized rooms p (IEC 60079-13:2010)
• Effective Date: 07-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 60079-13:2018
01-februar-2018
1DGRPHãþD
SIST EN 60079-13:2011
(NVSOR]LYQHDWPRVIHUHGHO=DãþLWDRSUHPH]]DSUWLPLSURVWRUL]QDGWODNRP
SLQXPHWQRSUH]UDþHYDQLSURVWRUL,(&
Explosive atmospheres - Part 13: Equipment protection by pressurized room "p" and
artificially ventilated room "v" (IEC 60079-13:2017)
Explosionsgefährdete Bereiche - Teil 13: Schutz von Einrichtungen durch einen
überdruckgekapselten Raum "p" und einen fremdbelüfteten Raum "v" (IEC 60079-
13:2017)
Atmosphères explosives - Partie 13: Protection du matériel par salle à surpression
interne "p" et salle ventilée artificiellement "v" (IEC 60079-13:2017)
Ta slovenski standard je istoveten z: EN 60079-13:2017
ICS:
29.260.20 (OHNWULþQLDSDUDWL]D Electrical apparatus for
HNVSOR]LYQDR]UDþMD explosive atmospheres
SIST EN 60079-13:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 60079-13:2018

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SIST EN 60079-13:2018


EUROPEAN STANDARD EN 60079-13

NORME EUROPÉENNE

EUROPÄISCHE NORM
October 2017
ICS 29.260.20 Supersedes EN 60079-13:2010
English Version
Explosive atmospheres - Part 13: Equipment protection by
pressurized room "p" and artificially ventilated room "v"
(IEC 60079-13:2017)
Atmosphères explosives - Partie 13: Protection du matériel Explosionsgefährdete Bereiche - Teil 13: Schutz von
par salle à surpression interne "p" et salle ventilée Einrichtungen durch einen überdruckgekapselten Raum "p"
artificiellement "v" und einen fremdbelüfteten Raum "v"
(IEC 60079-13:2017) (IEC 60079-13:2017)
This European Standard was approved by CENELEC on 2017-06-26. 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 CEN-CENELEC
Management Centre 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 CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden,
Switzerland, Turkey and the United Kingdom.


European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2017 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
 Ref. No. EN 60079-13:2017 E

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SIST EN 60079-13:2018
EN 60079-13:2017
European foreword
The text of document 31/1309/FDIS, future edition 2 of IEC 60079-13, prepared by
IEC/TC 31 "Equipment for explosive atmospheres" was submitted to the IEC-CENELEC parallel vote
and approved by CENELEC as EN 60079-13:2017.

The following dates are fixed:
(dop) 2018-04-06
• latest date by which the document has to be
implemented at national level by
publication of an identical national
standard or by endorsement
• latest date by which the national (dow) 2020-10-06
standards conflicting with the
document have to be withdrawn

This document supersedes EN 60079-13:2010.

Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.

Endorsement notice
The text of the International Standard IEC 60079-13:2017 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 60079-2 NOTE Harmonized as EN 60079-2.
IEC 60079-14 NOTE Harmonized as EN 60079-14.
IEC 60079-17 NOTE Harmonized as EN 60079-17.
IEC 60529 NOTE Harmonized as EN 60529.
IEC 61285 NOTE Harmonized as EN 61285.
IEC 61508 Series NOTE Harmonized as EN 61508 Series.
IEC 61511 Series NOTE Harmonized as EN 61511 Series.
2

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SIST EN 60079-13:2018
EN 60079-13:2017
Annex ZA
(normative)

Normative references to international publications
with their corresponding European publications

The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1 Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.

NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here:
www.cenelec.eu.

Publication Year Title EN/HD Year

IEC 60050-426 -  International Electrotechnical Vocabulary - - -
Part 426: Equipment for explosive
atmospheres
IEC 60079-0 -  Explosive atmospheres - EN 60079-0 -
Part 0: Equipment - General requirements
IEC 60079-10-1 -  Explosive atmospheres - EN 60079-10-1 -
Part 10-1: Classification of areas -
Explosive gas atmospheres
IEC 60079-29 Series Explosive atmospheres - EN 60079-29 Series
Part 29: Gas detectors

3

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SIST EN 60079-13:2018

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SIST EN 60079-13:2018



IEC 60079-13


®


Edition 2.0 2017-05




INTERNATIONAL



STANDARD



















Explosive atmospheres –

Part 13: Equipment protection by pressurized room "p" and artificially ventilated

room "v"


























INTERNATIONAL

ELECTROTECHNICAL


COMMISSION





ICS 29.260.20 ISBN 978-2-8322-4326-8



  Warning! Make sure that you obtained this publication from an authorized distributor.


® Registered trademark of the International Electrotechnical Commission

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SIST EN 60079-13:2018
– 2 – IEC 60079-13:2017 © IEC 2017
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 10
3 Terms and definitions . 11
4 Requirements for all rooms . 13
4.1 General . 13
4.2 Type and level of protection . 13
4.2.1 Pressurization "p" . 13
4.2.2 Artificial ventilation "v" . 14
4.3 Construction . 14
4.4 Mechanical strength . 14
4.5 Penetrations and seals . 14
4.6 Personnel access doors . 14
4.7 Inlets and outlets . 15
4.8 Ducts . 15
4.9 Purging and cleaning . 15
4.9.1 General . 15
4.9.2 Gases – Purging . 15
4.9.3 Enclosures within the room . 16
4.10 Ignition prevention under system failure . 16
5 Clean air supply. 16
5.1 General . 16
5.2 Source of clean air . 16
5.3 Environmental and air temperature conditions . 17
5.4 Heating, ventilation and air conditioning services . 17
6 Requirements for pressurized rooms . 17
6.1 General . 17
6.1.1 Design . 17
6.1.2 Source of clean air . 17
6.1.3 Flow . 17
6.1.4 Pressurization system . 17
6.1.5 Preventing the explosive atmosphere from entering through an open
door . 18
6.1.6 Airlock . 18
6.1.7 Outward air velocity through a door . 18
6.1.8 Air consuming device . 19
6.1.9 Action when pressurization system fails . 19
6.1.10 Re-energizing the room . 19
6.2 Purging of rooms . 19
6.2.1 General . 19
6.2.2 Sequence of operations of the purging safety devices . 20
6.2.3 Dusts – Cleaning . 20
6.3 Minimum safety provisions, safety devices and electrical disconnects . 20
6.3.1 Safety devices . 20
6.3.2 Safety devices based upon level of protection . 21

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SIST EN 60079-13:2018
IEC 60079-13:2017 © IEC 2017 – 3 –
6.3.3 Gas detectors . 21
6.4 Verification for pressurized rooms . 21
6.4.1 General . 21
6.4.2 Tests . 21
6.4.3 Overpressure test . 22
6.4.4 Purging test . 22
6.4.5 Minimum pressure differential test . 22
6.4.6 Confirmation of the ratings of the safety devices . 22
6.4.7 Verification of sequence of operation of the safety devices . 22
7 Requirements for artificially ventilated rooms . 22
7.1 General . 22
7.1.1 Design . 22
7.1.2 Source of clean air . 22
7.1.3 Minimum flow rate . 23
7.1.4 Ventilation system . 23
7.1.5 Air consuming device . 24
7.1.6 Safety actions when ventilation system fails . 24
7.1.7 Energizing the artificially ventilated area . 24
7.2 Purging of artificially ventilated rooms . 25
7.2.1 General . 25
7.2.2 Sequence of operations of the purging safety devices . 25
7.3 Minimum safety provisions, safety devices and electrical disconnects . 25
7.3.1 Safety devices . 25
7.3.2 Safety devices based upon equipment protection level . 25
7.3.3 Artificial ventilation protection . 26
7.3.4 Gas detectors . 26
7.4 Loss of artificial ventilation . 26
7.5 Verification for artificially ventilated rooms . 27
7.5.1 General . 27
7.5.2 Tests . 27
7.5.3 Purging test . 27
7.5.4 Minimum ventilation flow rate test . 27
7.5.5 Confirmation of the ratings of the safety devices . 27
7.5.6 Verification of sequence of operation of the safety devices . 27
7.5.7 Testing of ventilation system . 28
8 Marking . 28
8.1 General . 28
8.2 Marking of pressurized rooms . 28
8.3 Marking for artificially ventilated rooms . 29
9 Instructions . 30
9.1 General . 30
9.2 Technical documentation for pressurized rooms . 30
9.3 Technical documentation for artificially ventilated rooms . 30
9.4 Technical documentation for rooms protected by pressurization and artificial
ventilation combined . 31
9.5 Modifications. 31
Annex A (informative) Maintenance. 32
A.1 Periodic verification . 32
A.2 Modifications. 32

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SIST EN 60079-13:2018
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Annex B (informative) Guidelines when pressurization or artificial ventilation is not
immediately restored. 33
Annex C (informative) Examples of applications and associated guidelines . 34
C.1 Examples of applications . 34
C.2 Guidelines for gas turbine enclosure/package . 34
Bibliography . 35

Table 1 – Exclusion of specific clauses or subclauses of IEC 60079-0 . 9
Table 2 – Safety devices for pressurized rooms . 21
Table 3 – Safety actions for artificial ventilation failure . 24
Table 4 – Required safety devices for artificial ventilation . 26

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SIST EN 60079-13:2018
IEC 60079-13:2017 © IEC 2017 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

EXPLOSIVE ATMOSPHERES –

Part 13: Equipment protection by pressurized
room "p" and artificially ventilated room "v"

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 itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
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 60079-13 has been prepared by IEC technical committee 31:
Equipment for explosive atmospheres
This second edition cancels and replaces the first edition published in 2010. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) modification of the title of this document to include artificially ventilated room "v" in
addition to pressurized room "p";
b) addition of types of protection "pb", "pc", and "vc" and removal of types of protection "px",
"py", "pz" and "pv";
c) definition of the differences between pressurization and artificial ventilation types of
protection;

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SIST EN 60079-13:2018
– 6 – IEC 60079-13:2017 © IEC 2017
d) removal of protection of rooms with an inert gas or a flammable gas from the scope of this
document;
e) addition of an informative annex to include examples of applications where types of
protection pressurization or artificial ventilation or pressurization and artificial ventilation
can be used and associated guidelines.
The text of this document is based on the following documents:
FDIS Report on voting
31/1309/FDIS 31/1317/RVD

Full information on the voting for the approval of this document can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 2.
This document is to be used in conjunction with the principles of hazardous area classification
from IEC 60079-10-1 and artificial ventilation for the protection of analyser(s) houses from
IEC 60079-16.
A list of all parts in the IEC 60079 series, published under the general title Explosive
atmospheres, can be found on the IEC website.
The committee has decided that the contents of this publication will remain unchanged until
the stability date indicated on the IEC website under "http://webstore.iec.ch" in the data
related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.

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SIST EN 60079-13:2018
IEC 60079-13:2017 © IEC 2017 – 7 –
INTRODUCTION
This part of IEC 60079 gives requirements for the design, construction, assessment,
verification and marking of rooms used to protect internal equipment by pressurization or
artificial ventilation or both as applicable when located in an explosive gas atmosphere or
combustible dust atmosphere hazardous area with or without an internal source of a
flammable gas or vapour. It also includes a room located in a non-hazardous area that has an
internal source of release of a flammable gas or vapour.
This document deals with rooms that are partially constructed in a manufacturer’s facility and
intended to have the final installation completed on-site, as well as rooms that are constructed
completely on-site. Rooms partially constructed in a manufacturer’s facility may include third-
party verification. For rooms built on-site, this document can be used by plant operators as a
guide for assessment of those facilities.
This document represents a major technical revision of the requirements for equipment
protection by pressurized room "p" and artificially ventilated room "v" and should be
considered as introducing all new requirements.

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SIST EN 60079-13:2018
– 8 – IEC 60079-13:2017 © IEC 2017
EXPLOSIVE ATMOSPHERES –

Part 13: Equipment protection by pressurized
room "p" and artificially ventilated room "v"



1 Scope
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 req
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