SIST EN ISO 80079-37:2016

Explosive atmospheres - Part 37: Non-electrical equipment for use in explosive atmospheres - Non-electrical type of protection constructional safety 'c', control of ignition sources 'b', liquid immersion 'k' (ISO 80079-37:2016)

This International standard specifies the requirements for the design and construction of non-electrical equipment, intended for use in explosive atmospheres, protected by the types of protection Constructional Safety , Control of ignition source, Liquid immersion .
This standard supplements the requirements in IEC 80079-36, the contents of which also apply in full to equipment constructed in accordance with this standard.

Explosionsfähige Atmosphären - Nicht-elektrische Geräte für den Einsatz in explosionsfähigen Atmosphären - Teil 37: Sicherheit 'c', Zündquellenüberwachung 'b', Flüssigkeitskapselung 'k' (ISO 80079-37:2016)

Diese Internationale Norm legt die Anforderungen an die Konstruktion und den Bau von nichtelektrischen Geräten fest, die für den Einsatz in explosionsfähigen Atmosphären vorgesehen sind und durch die Zündschutzarten konstruktive Sicherheit "ch", Zündquellenüberwachung "bh" und Flüssigkeitskapselung "kh" geschützt sind.
Die Norm ergänzt und modifiziert die Anforderungen in ISO 80079-36. Wenn eine Anforderung dieser Norm im Widerspruch zu der Anforderung von ISO 80079-36 steht, hat die Anforderung der vorliegenden Norm Vorrang.
Die Schutzarten "ch", "kh" und "bh" sind ohne zusätzliche Schutzmaßnahmen für Gruppe I, EPL Ma, nicht anwendbar.
Die in der Norm beschriebenen Zündschutzarten können entweder für sich allein oder in Kombination miteinander angewendet werden, um die Anforderungen an Geräte der Gruppe I, Gruppe II und Gruppe III in Abhängigkeit von der Zündgefahrenbewertung in ISO 80079-36 zu erfüllen.

Atmosphères explosives - Partie 37: Matériels non électriques pour atmosphères explosives - Mode de protection non électrique par sécurité de construction "ch", par contrôle de source d'inflammation "bh", par immersion dans un liquide "kh" (ISO/DIS 80079-37:2016)

L'ISO 80079-37:2016 spécifie les exigences relatives à la conception et à la construction d'un appareil non électrique, destiné à être utilisé dans les atmosphères explosives et protégés par les modes de protection par sécurité de construction "c", par contrôle de la source d'inflammation "b", par immersion dans un liquide "k". La présente partie de l'ISO/IEC 80079 complète et modifie les exigences de l'ISO 80079-36. Lorsqu'une exigence de cette norme s'oppose à une exigence de l'IEC 80079-36, l'exigence de cette norme prime. Les types de protections "c", "k" et "b" ne s'appliquent pas pour le Groupe I, EPL Ma sans l'ajout d'autres précautions de protection. Les modes de protection contre l'inflammation décrits dans la norme peuvent être utilisés indépendamment ou en combinaison les uns avec les autres pour satisfaire aux exigences relatives aux appareils du Groupe I, du Groupe II et du Groupe III, en fonction de l'évaluation du danger d'inflammation dans l'ISO 80079-36.                      
Mots clés: sécurité de construction "c", par contrôle de la source d'inflammation "b", par immersion dans un liquide "k"

Eksplozivne atmosfere - 37. del: Neelektrična oprema za uporabo v potencialno eksplozivnih atmosferah - Neelektrična vrsta zaščite s konstrukcijsko varnostjo "c", kontrolo virov vžiga "b", s potopitvijo v tekočino "k" (ISO 80079-37:2016)

Ta mednarodni standard določa zahteve za načrtovanje in konstrukcijo neelektrične opreme, ki je namenjena za uporabo v eksplozivnih atmosferah in je zaščitena z vrstami zaščite s konstrukcijsko varnostjo, kontrolo virov vžiga in potopitvijo v tekočino.
Ta standard dopolnjuje zahteve iz standarda IEC 80079-36, katerega vsebina se prav tako v celoti uporablja za opremo, izdelano v skladu s tem standardom.

General Information

• Status: Published
• Public Enquiry End Date: 19-Oct-2014
• Publication Date: 17-May-2016
• ICS: 13.230 - Explosion protection
• 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: 14-Apr-2016
• Due Date: 19-Jun-2016
• Completion Date: 18-May-2016
• Directive: 2014/34/EU - Directive 2014/34/EU Of The European Parliament And Of The Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to equipment and protective systems intended for use in potentially explosive atmospheres (recast)
• Directive: 94/9/EC - Directive 94/9/EC of the European Parliament and the Council of 23 March 1994 on the approximation of the laws of the Member States concerning equipment and protective systems intended for use in potentially explosive atmospheres
• Mandate: M/BC/CEN/92/46 - Standardization mandate assigned to CEN/CENELEC concerning equipment and protective systems intended for use in potentially explosive atmospheres
• Ref Project: EN ISO 80079-37:2016 - Explosive atmospheres - Part 37: Non-electrical equipment for explosive atmospheres - Non-electrical type of protection constructional safety ''c'', control of ignition sources ''b'', liquid immersion ''k'' (ISO 80079-37:2016)

Relations

• Replaces: SIST EN 13463-8:2003 - Non-electrical equipment for potentially explosive atmospheres - Part 8: Protection by liquid immersion 'k'
• Effective Date: 13-Apr-2016
• Replaces: SIST EN 13463-5:2011 - Non-electrical equipment intended for use in potentially explosive atmospheres - Part 5: Protection by constructional safety 'c'
• Effective Date: 13-Apr-2016
• Replaces: SIST EN 13463-6:2005 - Non-electrical equipment for use in potentially explosive atmospheres - Part 6: Protection by control of ignition source 'b'
• Effective Date: 13-Apr-2016
• Replaces: SIST EN 13463-8:2003 - Non-electrical equipment for potentially explosive atmospheres - Part 8: Protection by liquid immersion 'k'
• Effective Date: 08-Jun-2022

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN ISO 80079-37:2016
01-julij-2016
1DGRPHãþD
SIST EN 13463-5:2011
SIST EN 13463-6:2005
SIST EN 13463-8:2003
(NVSOR]LYQHDWPRVIHUHGHO1HHOHNWULþQDRSUHPD]DXSRUDERYSRWHQFLDOQR
HNVSOR]LYQLKDWPRVIHUDK1HHOHNWULþQDYUVWD]DãþLWHVNRQVWUXNFLMVNRYDUQRVWMR
FNRQWURORYLURYYåLJDEVSRWRSLWYLMRYWHNRþLQRN,62
Explosive atmospheres - Part 37: Non-electrical equipment for use in explosive
atmospheres - Non-electrical type of protection constructional safety 'c', control of ignition
sources 'b', liquid immersion 'k' (ISO 80079-37:2016)
Explosionsfähige Atmosphären - Nicht-elektrische Geräte für den Einsatz in
explosionsfähigen Atmosphären - Teil 37: Sicherheit 'c', Zündquellenüberwachung 'b',
Flüssigkeitskapselung 'k' (ISO 80079-37:2016)
Atmosphères explosives - Partie 37: Matériels non électriques pour atmosphères
explosives - Mode de protection non électrique par sécurité de construction "ch", par
contrôle de source d'inflammation "bh", par immersion dans un liquide "kh" (ISO/DIS
80079-37:2016)
Ta slovenski standard je istoveten z: EN ISO 80079-37:2016
ICS:
13.230 Varstvo pred eksplozijo Explosion protection
29.260.20 (OHNWULþQLDSDUDWL]D Electrical apparatus for
HNVSOR]LYQDR]UDþMD explosive atmospheres
SIST EN ISO 80079-37:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 80079-37:2016

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SIST EN ISO 80079-37:2016


EN ISO 80079-37
EUROPEAN STANDARD

NORME EUROPÉENNE

April 2016
EUROPÄISCHE NORM
ICS 29.260.20 Supersedes EN 13463-5:2011, EN 13463-6:2005, EN
13463-8:2003
English Version

Explosive atmospheres - Part 37: Non-electrical equipment
for explosive atmospheres - Non-electrical type of
protection constructional safety ''c'', control of ignition
sources ''b'', liquid immersion ''k'' (ISO 80079-37:2016)
Atmosphères explosives - Partie 37: Appareils non Explosionsgefährdete Bereiche - Teil 37: Nicht-
électriques destinés à être utilisés en atmosphères elektrische Geräte für den Einsatz in
explosives - Mode de protection non électrique par explosionsgefährdeten Bereichen - Schutz durch
sécurité de construction "c", par contrôle de la source konstruktive Sicherheit 'c', Zündquellenüberwachung
d'inflammation "b", par immersion dans un liquide "k" 'b', Flüssigkeitskapselung 'k' (ISO 80079-37:2016)
(ISO 80079-37:2016)
This European Standard was approved by CEN on 8 February 2016.

CEN 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 CEN
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 CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2016 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 80079-37:2016 E
worldwide for CEN national Members.

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SIST EN ISO 80079-37:2016
EN ISO 80079-37:2016 (E)
Contents Page
European Foreword . 3
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2014/34/EU . 4
Annex ZB (informative) Significant changes between this European Standard and
EN 13463-5:2011, EN 13463-6:2005 and EN 13463-8:2003 . 6

2

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SIST EN ISO 80079-37:2016
EN ISO 80079-37:2016 (E)
European Foreword
This document (EN ISO 80079-37:2016) has been prepared by Technical Committee ISO/TMBG
"Technical Management Board - groups" in collaboration with Technical Committee CEN/TC 305
“Potentially explosive atmospheres - Explosion prevention and protection” the secretariat 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 2016, and conflicting national standards shall
be withdrawn at the latest by October 2016.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent
rights.
The significant changes with respect to EN 13463-5:2011, EN 13463-6:2005 and EN 13463-8:2003 are
included in Annex ZB “Significant changes between this European Standard and EN 13463-5:2011,
EN 13463-6:2005 and EN 13463-8:2003".
This document supersedes EN 13463-5:2011, EN 13463-6:2005, EN 13463-8:2003.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of 2014/34/EU.
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
Extensions to the marking scheme described in the Directive are found in the ATEX Guidelines
published by the European Commission. These are particularly useful for equipment that conforms to
more than one category.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 80079-37:2016 has been approved by CEN as EN ISO 80079-37:2016 without any
modification.
3

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SIST EN ISO 80079-37:2016
EN ISO 80079-37:2016 (E)
Annex ZA
(informative)

Relationship between this European Standard and the Essential
Requirements of EU Directive 2014/34/EU
This European Standard has been prepared under a mandate given to CEN by the European
Commission and the European Free Trade Association to provide a means of conforming to Essential
Requirements of the New Approach Directive 2014/34/EU.
Once this standard is cited in the Official Journal of the European Union under that Directive and has
been implemented as a national standard in at least one Member State, compliance with the clauses of
this standard given in Table ZA.1 confers, within the limits of the scope of this standard, a presumption
of conformity with the corresponding Essential Requirements of that Directive and associated EFTA
regulations.
Table ZA.1 — Correspondence between this European Standard and Directive 94/9/EC
Clause(s)/sub- Essential Requirements Qualifying remarks/Notes
clause(s) of this EN (ERs) of 2014/34 EU
4 1.1.1
1.1.3
5.1 1.3.4 See also 80079-36
1.4.1 Clause has some limited relevance to ESR
1.2.4
5.2 1.1.1
5.3.1 1.3.1 See also 80079-36
5.3.2 1.2.3 See also 80079-36
5.4 1.3.1 See also 80079-36
5.6.1 1.0.6a Not much additional information
1.1.3
5.6.2 1.3.4 See also 80079-36
5.6.3 1.3.1 See also 80079-36
5.7.1 1.0.6a
1.0.6c
1.2.1
5.7.2 1.3.1 See also 80079-36
5.7.3 1.1.3
5.8.1 1.1.3 See also 80079-36
1.3.1 Limited information in respect of 1.1.3
1.3.4
5.8.2.1 1.3.1 See also 80079-36
5.8.2.2 1.3.1 See also 80079-36
4

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SIST EN ISO 80079-37:2016
EN ISO 80079-37:2016 (E)
Clause(s)/sub- Essential Requirements Qualifying remarks/Notes
clause(s) of this EN (ERs) of 2014/34 EU
1.3.2
5.8.2.3 1.3.4 See also 80079-36
5.8.2.4 1.3.4 See also 80079-36
5.8.5.1 1.3.4 See also 80079-36
5.9.3 1.3.4 See also 80079-36
6.1 1.3.1 See also 80079-36
6.2 1.0.6a See also 80079-36
1.1.3 Clause has some limited relevance to ESR
1.2.4
1.2.1

1.3.4
1.4.1
6.3 1.0.6a
1.2.1
6.4 1.0.6a
1.2.1
6.5 1.0.6a
1.2.1
7.1 1.0.6a See also 80079-36
1.2.1 Clause has some limited relevance to ESR
1.2.4
1.3.2
1.3.4
1.4.1
7.2 1.0.6a
1.2.1
7.3 1.0.6a
1.1.3
1.2.1
7.3.3 1.3.1
7.3.4 1.2.3 See also 80079-36
1.3.2
WARNING — Other requirements and other EU Directives may be applicable to the product(s) falling
within the scope of this standard.
5

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SIST EN ISO 80079-37:2016
EN ISO 80079-37:2016 (E)
Annex ZB
(informative)

Significant changes between this European Standard and EN 13463-5:2011,
EN 13463-6:2005 and EN 13463-8:2003
This European Standard supersedes EN 13463-5:2011, EN 13463-6:2005 and EN 13463-8:2003.
Table ZB.1 — Significant changes between this European Standard and EN 13463-5:2011,
EN 13463-6:2005 and EN 13463-8:2003
Clauses of this European Standard Type
Minor and Substantial
  formal Extension change
changes regarding ESRs
Introduction of new definitions and slight
redefinitions concerning ignition sources to
improve ignition hazard assessment
Clause 3 X X
(EN 13463-5, EN 13463-6, EN 13463-8
Clause 3)
Differentiation in requirements for ingress
prevention for dust and liquids (EN 13463-5, 5.2.2 X
Clause 4.3.4)
Changing note to normative text (EN 13463-5,
5.3.3 X X
Clause 4.4.3)
Note 2 deleted and moved to 5.6 (EN 13463-5,
5.5 X
Clause 4.6)
nd
Additional requirement listed (2 clause)
5.6 X X
(from EN 13463-5, Clause 4.6)
Additional measure listed (EN 13463-5,
5.6.3 X X
Clause 5.3)
Changing of wording regarding information
5.7.1 X
for instructions (EN 13463-5, Clause 6.1)
Changing of wording regarding information
5.7.2 X
for instructions (EN 13463-5, Clause 6.2)
Additional requirement New reference
regarding electrostatic requirements
5.8.2.2 X
(EN 13463-5, note in 7.2.2)
New note
Changing of wording (EN 13463-5,
5.8.2.5 X
Clause 7.6.5)
Changing to clarify dependency of
requirements
5.10 X
(EN 13463-5, Clause 7.3.2)
Differentiation to clarify dependency of 5.11.1 X X
6

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SIST EN ISO 80079-37:2016
EN ISO 80079-37:2016 (E)
Clauses of this European Standard Type
Minor and Substantial
  formal Extension change
changes regarding ESRs
requirements (EN 13463-5, Clause 8.1)
Additional requirement (EN 13463-5,
5.13.3 X
Clause 10.3)
Editorial modification for clarification
Clause 6 X X
(EN 13463-6, Clause 6.1)
Editorial modification for clarification
7.1 X
(EN 13463-8, Clause 5.1)
Editorial modification for clarification
7.3.2 X
(EN 13463-8, Clause 7.2)
Additional example (EN 13463-8, Clause 7.4) 7.3.4 X
Editorial modification for clarification
7.3.6 X
(EN 13463-8, Clause 7.8)
Introduction of new definitions for marking Clause 10 X X

NOTE 1 The technical changes referred include the significant technical changes from the EN revised but is not
an exhaustive list of all modifications from the previous version.
Explanations:
A) Definitions
Minor and editorial changes clarification
 decrease of technical requirements
 minor technical change
 editorial corrections

Changes in a standard classified as ‘Minor and editorial changes’ refer to changes regarding the
previous standard, which modify requirements in an editorial or a minor technical way. Also changes of
the wording to clarify technical requirements without any technical change are classified as ‘Minor and
editorial changes’.
A reduction in level of existing requirement is also classified as ‘Minor and editorial changes’
Extension addition of technical options

Changes in a standard classified as ‘extension’ refers to changes regarding the previous standard, which
add new or modify existing technical requirements, in a way that new options are given, but without
increasing requirements for equipment that was fully compliant with the previous standard. Therefore
these ‘extensions’ will not have to be considered for products in conformity with the preceding edition.
7

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SIST EN ISO 80079-37:2016
EN ISO 80079-37:2016 (E)

Major technical changes addition of technical requirements
 increase of technical requirements

Changes in a standard classified as ‘Major technical change’ refer to changes regarding the previous
standard, which add new or increase the level of existing technical requirements, in a way that a
product in conformity with the preceding standard will not always be able to fulfil the requirements
given in the standard. ‘Major technical changes’ have to be considered for products in conformity with
the preceding edition. For every change classified as ‘Major Technical Change’ additional information is
provided in clause B) of the Annex ZB.
1
NOTE 2 These changes represent current technological knowledge . However, these changes should not
normally have an influence on equipment already placed on the market.
B) Information about the background of ‘Major Technical Changes’
None


1
 see also ATEX Guide 10.3 and Annex ZA.
8

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SIST EN ISO 80079-37:2016



ISO 80079-37


Edition 1.0 2016-02




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE











Explosive atmospheres –

Part 37: Non-electrical equipment for explosive atmospheres – Non electrical

type of protection constructional safety “c”, control of ignition source “b”, liquid


immersion “k”



Atmosphères explosives –


Partie 37: Appareils non électriques destinés à être utilisés en atmosphères

explosives – Mode de protection non électrique par sécurité de construction "c",

par contrôle de la source d'inflammation "b", par immersion dans un liquide "k"










INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 13.230; 29.260.20 ISBN 978-2-8322-3181-4



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

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

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SIST EN ISO 80079-37:2016
– 2 – ISO 80079-37:2016 © ISO 2016
CONTENTS
FOREWORD . 5
1 Scope . 7
2 Normative references. 7
3 Terms and definitions . 8
4 Determination of suitability . 9
5 Requirements for equipment with Type of Protection constructional safety “c” . 9
5.1 General requirements . 9
5.2 Ingress protection . 10
5.2.1 General . 10
5.2.2 Ingress protection in special cases . 10
5.3 Seals for moving parts . 10
5.3.1 Unlubricated gaskets, seals, sleeves, bellows and diaphragms . 10
5.3.2 Stuffing box seals (packed glands) . 11
5.3.3 Lubricated seals . 11
5.4 Equipment lubricants, coolants and fluids . 11
5.5 Vibration . 11
5.6 Requirements for moving parts . 11
5.6.1 General . 11
5.6.2 Clearance . 12
5.6.3 Lubrication . 12
5.7 Requirements for bearings . 12
5.7.1 General . 12
5.7.2 Lubrication . 13
5.7.3 Chemical compatibility . 13
5.8 Requirements for power transmission systems . 14
5.8.1 Gear drives . 14
5.8.2 Belt drives . 14
5.8.3 Chain drives. 15
5.8.4 Other drives . 15
5.8.5 Hydrostatic, hydrokinetic and pneumatic equipment . 15
5.9 Requirements for clutches and variable speed couplings . 16
5.9.1 General . 16
5.9.2 Slipping . 16
5.9.3 Friction . 17
5.10 Flexible couplings . 17
5.11 Requirements for brakes and braking systems . 17
5.11.1 Brakes used only for stopping in emergency . 17
5.11.2 Service brakes (including friction brakes and fluid based retarders) . 18
5.11.3 Parking brakes . 18
5.12 Requirements for springs and absorbing elements . 18
5.13 Requirements for conveyor belts . 18
5.13.1 Electrostatic requirements . 18
5.13.2 Materials . 18
5.13.3 Belt tension . 18
5.13.4 Alignment . 19
5.13.5 Earthing and bonding . 19

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SIST EN ISO 80079-37:2016
ISO 80079-37:2016 © ISO 2016 – 3 –
6 Requirements for equipment with Type of Protection control of ignition source “b” . 19
6.1 General . 19
6.2 Determination of the control parameters . 19
6.2.1 General . 19
6.2.2 Determination of the safety critical values . 20
6.3 Ignition prevention system design and settings . 20
6.3.1 Determining the performance requirements or operating characteristics . 20
6.3.2 Instructions . 20
6.3.3 System lockout . 20
6.3.4 Operator intervention . 21
6.4 Ignition protection of sensors and actuators . 21
6.5 Ignition protection types . 21
6.5.1 Ignition protection type b1 . 21
6.5.2 Ignition protection type b2 . 21
6.5.3 Application of ignition protection types . 22
6.5.4 Requirements for ignition protection types . 23
6.5.5 Programmable electronic devices . 23
7 Requirements for equipment with Type of Protection liquid immersion “k”. 23
7.1 Determination of the maximum / minimum criteria . 23
7.2 Protective liquid . 24
7.3 Equipment construction . 24
7.3.1 General . 24
7.3.2 Working angle . 24
7.3.3 Measures to ensure effectiveness of liquid . 24
7.3.4 Accidental loosening . 25
7.3.5 Level monitoring . 25
7.3.6 Loss of liquid . 25
7.3.7 Open equipment . 26
8 Type tests . 26
8.1 Type tests for equipment with Type of Protection constructional safety “c” . 26
8.2 Type tests for equipment with Type of Protection control of ignition source
“b” . 26
8.2.1 Determination of control parameters . 26
8.2.2 Function and accuracy check of the ignition protection system . 26
8.3 Type tests for equipment with Type of Protection liquid immersion “k” . 26
8.3.1 General . 26
8.3.2 Increased pressure test on enclosed equipment having a sealed
enclosure that contains static, or flowing protective liquid . 26
8.3.3 Overpressure test on enclosed equipment having a vented enclosure . 26
9 Documentation . 26
9.1 Documentation for equipment with Type of Protection constructional safety
“c” . 26
9.2 Documentation for equipment with Type of Protection control of ignition
sources “”b” . 27
9.3 Documentation for equipment with Type of Protection liquid immersion “k” . 27
10 Marking . 28
10.1 General . 28
10.2 Safety devices . 28

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SIST EN ISO 80079-37:2016
– 4 – ISO 80079-37:2016 © ISO 2016
Annex A (informative) Approach and application: equipment with Type of
Protection “c” . 29
A.1 General remarks regarding ignition hazard assessment . 29
A.2 Stuffing box seal (see Table A.2) . 29
A.3 Slide ring seal . 31
A.4 Radial seal . 36
A.5 Belt drives . 40
Annex B (normative) Test requirements . 42
B.1 "Dry run" type test for lubricated sealing arrangements . 42
B.2 Type test for determining the maximum engaging time of clutch assembly . 42
B.2.1 Apparatus . 42
B.2.2 Procedure . 43
Annex C (informative) Methodology: equipment with Type of Protection “b” . 44
Annex D (informative) Approach to assign the required ignition protection type used
for equipment to achieve different EPL . 45
D.1 For EPL Gc and Dc . 45
D.2 For EPL Gb and Db . 45
D.3 For EPL Mb . 45
D.4 For EPL Ga and Da . 46
Annex E (informative) Information on functional safety concept . 47
E.1 ISO 13849-1 . 47
E.2 IEC 61508-1 . 47
E.3 IEC 62061 . 47
E.4 Reliability according to functional safety standards . 47
Bibliography . 49

Figure C.1 – Flow diagram of the procedures described in this document . 44

Table 1 – Minimum ignition protection types required when Ex “b” is selected to
achieve the intended EPL for Group II and III equipment. 22
Table 2 – Minimum ignition protection types required when Ex “b” is selected
...

SLOVENSKI STANDARD
oSIST prEN ISO 80079-37:2014
01-oktober-2014
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Explosive atmospheres - Part 37: Non-electrical equipment for use in explosive
atmospheres - Non-electrical type of protection constructional safety 'c', control of ignition
sources 'b', liquid immersion 'k' (ISO/DIS 80079-37:2014)
Explosionsfähige Atmosphären - Nicht-elektrische Geräte für den Einsatz in
explosionsfähigen Atmosphären - Teil 37: Sicherheit 'c', Zündquellenüberwachung 'b',
Flüssigkeitskapselung 'k' (ISO/DIS 80079-37:2014)
Atmosphères explosives - Partie 37: Matériels non électriques pour atmosphères
explosives - Mode de protection non électrique par sécurité de construction "ch", par
contrôle de source d'inflammation "bh", par immersion dans un liquide "kh" (ISO/DIS
80079-37:2014)
Ta slovenski standard je istoveten z: prEN ISO 80079-37 rev
ICS:
13.230 Varstvo pred eksplozijo Explosion protection
29.260.20 (OHNWULþQLDSDUDWL]D Electrical apparatus for
HNVSOR]LYQDR]UDþMD explosive atmospheres
oSIST prEN ISO 80079-37:2014 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN ISO 80079-37:2014

---------------------- Page: 2 ----------------------
oSIST prEN ISO 80079-37:2014

DRAFT INTERNATIONAL STANDARD IEC/DIS 80079-37.2
Secretariat: TMB

Voting begins on Voting terminates on
2014-07-18 2014-10-24
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION x ɆȿɀȾɍɇȺɊɈȾɇȺə ɈɊȽȺɇɂɁȺɐɂə ɉɈ ɋɌȺɇȾȺɊɌɂɁȺɐɂɂ x ORGANISATION INTERNATIONALE DE NORMALISATION
INTERNATIONAL ELECTROTECHNICAL COMMISSION  x ɆȿɀȾɍɇȺɊɈȾɇȺə ɗɅȿɄɌɊɈɌȿɏɇɂɑȿɋɄȺə ɄɈɆɆɂɋɂə  x COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE



Explosive atmospheres —
Part 37:
Non-electrical equipment for use in explosive atmospheres —
Non-electrical type of protection constructional safety 'c',
control of ignition sources 'b', liquid immersion 'k'
Atmosphères explosives —
Partie 37: Matériels non électriques pour atmosphères explosives — Mode de protection non électrique par
sécurité de construction "ch", par contrôle de source d'inflammation "bh", par immersion dans un liquide "kh"


ICS 29.260.20









ISO/CEN PARALLEL PROCESSING
This draft has been developed within the International Organization for Standardization (ISO), and
processed under the ISO-lead mode of collaboration as defined in the Vienna Agreement.
This draft is hereby submitted to the ISO member bodies and to the CEN member bodies for a parallel
five-month enquiry.
Should this draft be accepted, a final draft, established on the basis of comments received, will be
submitted to a parallel two-month approval vote in ISO and formal vote in CEN.

This draft is submitted to a parallel enquiry in ISO and a CDV vote in the IEC.

THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE
REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS BEING ACCEPTABLE FOR INDUSTRIAL, TECHNOLOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME
STANDARDS TO WHICH REFERENCE MAY BE MADE IN NATIONAL REGULATIONS.
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT, WITH THEIR COMMENTS, NOTIFICATION OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPORTING DOCUMENTATION.
©  International Electrotechnical Commission, 2014

---------------------- Page: 3 ----------------------
oSIST prEN ISO 80079-37:2014
IEC/DIS 80079-37.2

©  International Electrotechnical Commission, 2014
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