Explosive atmospheres - Part 34: Application of quality systems for equipment manufacture (ISO/IEC 80079-34:2018)

This part of ISO/IEC 80079 specifies particular requirements and information for establishing and maintaining a quality system to manufacture Ex equipment productsincluding protective systems in accordance with the Ex certificate. While it does not preclude the use of other quality systems that are compatible with the objectives of ISO 9001:2008 2015 and which provide equivalent results, the minimum requirements shall be in accordance with this standard.

Explosionsgefährdete Bereiche - Teil 34: Anwendung von Qualitätsmanagementsystemen für die Herstellung von Ex-Produkten (ISO/IEC 80079-34:2018)

Dieses Dokument legt besondere Anforderungen an und Angaben für die Verwirklichung und Aufrechterhaltung von Qualitätsmanagementsystemen zur Herstellung von Ex Produkten in Übereinstimmung mit dem Zertifikat fest. Obwohl die Anwendung von anderen Qualitätsmanagementsystemen, die mit den Zielsetzungen der ISO 9001:2015 übereinstimmen und zu gleichwertigen Ergebnissen führen, nicht ausgeschlossen wird, werden die Mindestanforderungen in diesem Dokument angegeben.

Atmosphères explosives - Partie 34: Application des systèmes de qualité pour la fabrication d'équipements (ISO/IEC 80079-34:2018)

ISO/IEC 80079-34:2018 spécifie des exigences particulières et des informations destinées à établir et à maintenir un système de management de la qualité afin de fabriquer des produits Ex, conformément aux certificats existants. Même s’il n'est pas incompatible avec l'utilisation d'autres systèmes de management de la qualité conciliables avec les objectifs de l'ISO 9001:2015 et donnant des résultats équivalents, le présent document indique les exigences minimales. Cette deuxième édition annule et remplace la première édition, parue en 2011. Cette édition constitue une révision technique complète. Il convient de considérer que les modifications importantes apportées à l’édition précédente donnent lieu à une révision technique mineure. Toutefois, la numérotation des articles a été modifiée par rapport à l’édition précédente afin d’être conforme à l’ISO 9001:2015. C’est la raison pour laquelle, l’habituel « Tableau des modifications majeures » n’est pas inclus. Cette publication est publiée en tant que norme à double logo. Il convient d’utiliser la présente norme conjointement avec l'ISO 9001:2015.

Eksplozivne atmosfere - 34. del: Uporaba sistemov kakovosti za izdelavo opreme (ISO/IEC 80079-34:2018)

General Information

Status
Published
Public Enquiry End Date
06-Sep-2017
Publication Date
07-May-2020
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
02-Apr-2020
Due Date
07-Jun-2020
Completion Date
08-May-2020

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SLOVENSKI STANDARD
SIST EN ISO/IEC 80079-34:2020
01-junij-2020
Nadomešča:
SIST EN ISO/IEC 80079-34:2011
Eksplozivne atmosfere - 34. del: Uporaba sistemov kakovosti za izdelavo opreme
(ISO/IEC 80079-34:2018)
Explosive atmospheres - Part 34: Application of quality systems for equipment
manufacture (ISO/IEC 80079-34:2018)
Explosionsgefährdete Bereiche - Teil 34: Anwendung von

Qualitätsmanagementsystemen für die Herstellung von Ex-Produkten (ISO/IEC 80079-

34:2018)
Atmosphères explosives - Partie 34: Application des systèmes de qualité pour la
fabrication d'équipements (ISO/IEC 80079-34:2018)
Ta slovenski standard je istoveten z: EN ISO/IEC 80079-34:2020
ICS:
03.120.99 Drugi standardi v zvezi s Other standards related to
kakovostjo quality
13.230 Varstvo pred eksplozijo Explosion protection
SIST EN ISO/IEC 80079-34:2020 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO/IEC 80079-34:2020
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SIST EN ISO/IEC 80079-34:2020
EN ISO/IEC 80079-34
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2020
EUROPÄISCHE NORM
ICS 29.260.20 Supersedes EN ISO/IEC 80079-34:2011
English Version
Explosive atmospheres - Part 34: Application of quality
systems for ex product manufacture (ISO/IEC 80079-
34:2018)

Atmosphères explosives - Partie 34: Application de Explosionsgefährdete Bereiche - Teil 34: Anwendung

systèmes de management de la qualité pour la von Qualitätsmanagementsystemen für die Herstellung

fabrication des produits Ex (ISO/CEI 80079-34:2018) von Ex-Produkten (ISO/IEC 80079-34:2018)

This European Standard was approved by CEN on 29 December 2019.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels

© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO/IEC 80079-34:2020 E

worldwide for CEN national Members.
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SIST EN ISO/IEC 80079-34:2020
EN ISO/IEC 80079-34:2020 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

Annex ZA (normative) Normative references to international publications and the

corresponding European publications .................................................................................................... 5

Annex ZB (informative) Information relevant to equipment and protective systems

according to standards harmonized under Directive 2014/34/EU ............................................. 6

ZB.1 Introduction ...................................................................................................................................................... 6

ZB.2 Non-electrical equipment (EN 13463-1) ................................................................................................ 6

ZB.3 Protection by flow restricting enclosure "fr" (EN 13463-2) ............................................................ 6

ZB.4 Protection by flameproof enclosure "d" (EN 13463-3) ..................................................................... 6

ZB.5 Protection by constructional safety "c" (EN 13463-5) ....................................................................... 6

ZB.6 Protection by control of ignition sources "b" (EN 13463-6) ............................................................ 6

ZB.7 Protection by pressurised enclosures "p" (EN 13463-7) .................................................................. 6

ZB.8 Protection by liquid immersion "k" (EN 13463-8) .............................................................................. 7

ZB.9 Fans (EN 14986) .............................................................................................................................................. 7

ZB.9.1 General ................................................................................................................................................................ 7

ZB.9.2 Material ............................................................................................................................................................... 7

ZB.9.3 Assembled equipment and protective systems .................................................................................... 7

ZB.9.4 Routine tests ..................................................................................................................................................... 7

ZB.10 Petrol dispensers (EN 13617-1) ................................................................................................................ 8

ZB.10.1 General ....................................................................................................................................................... 8

ZB.10.2 Electrical installation ............................................................................................................................ 8

ZB.10.3 Information for safe operation .......................................................................................................... 8

ZB.10.4 Assembly groups ..................................................................................................................................... 8

ZB.10.5 Assembling ................................................................................................................................................ 8

ZB.10.6 Monitoring equipment .......................................................................................................................... 9

ZB.10.7 Electrostatic discharge capacity ........................................................................................................ 9

ZB.10.8 Routine tests ............................................................................................................................................. 9

ZB.11 Electrostatic spraying equipment ............................................................................................................. 9

ZB.11.1 General ....................................................................................................................................................... 9

ZB.11.2 Electrical assembly .............................................................................................................................. 10

ZB.11.3 Mechanical assembly .......................................................................................................................... 11

ZB.11.4 Tests .......................................................................................................................................................... 11

ZB.12 Protective systems ....................................................................................................................................... 12

ZB.12.1 General .................................................................................................................................................... 12

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SIST EN ISO/IEC 80079-34:2020
EN ISO/IEC 80079-34:2020 (E)

ZB.12.2 Explosion resistant equipment (EN 14460) ............................................................................... 12

ZB.12.3 Explosion venting devices (EN 14797) ......................................................................................... 12

ZB.12.4 Explosion isolation systems (EN 15089) ..................................................................................... 13

ZB.12.5 Flameless explosion venting devices (EN 16009) .................................................................... 14

ZB.12.6 Explosion diverters (EN 16020) ...................................................................................................... 14

ZB.12.7 Explosion isolation flap valves (EN 16447) ................................................................................ 15

Annex ZC (informative) Significant changes between these European Annexes and the

European Annexes of EN ISO/IEC 80079-34:2011 ............................................................................ 16

Annex ZD (informative) Relationship between this European Standard and the essential

requirements of 2014/34/EU [2014 OJ L96] aimed to be covered ............................................ 18

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SIST EN ISO/IEC 80079-34:2020
EN ISO/IEC 80079-34:2020 (E)
European foreword

The text of ISO/IEC 80079-34:2018 has been prepared by Technical Committee ISO/TMB "Technical

Management Board - groups” of the International Organization for Standardization (ISO) and has been

taken over as EN ISO/IEC 80079-34:2020 by 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 September 2020, and conflicting national standards

shall be withdrawn at the latest by March 2023.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO/IEC 80079-34:2011.

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 EU Directive(s).

For relationship with EU Directives, see informative Annex ZA, ZB, ZC and ZD, which are an integral part

of this document.

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, France, Germany, Greece, Hungary, Iceland,

Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of

North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the

United Kingdom.
Endorsement notice

The text of ISO/IEC 80079-34:2018 has been approved by CEN as EN ISO/IEC 80079-34:2020 without

any modification.
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SIST EN ISO/IEC 80079-34:2020
EN ISO/IEC 80079-34:2020 (E)
Annex ZA
(normative)
Normative references to international publications and the 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 Where an International Publication has been modified by common modifications, indicated by (mod),

the relevant EN/HD applies.
Publication Year Title EN/HD Year
IEC 60050-426 — International Electrotechnical Vocabulary — — —
Part 426: Equipment for explosive
atmospheres
IEC 60079-0 — Explosive atmospheres — Part 0: EN IEC 60079-0 2018
Equipment — General requirements
ISO 9000 2015 Quality management systems — EN ISO 9000 2015
Fundamentals and vocabulary
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SIST EN ISO/IEC 80079-34:2020
EN ISO/IEC 80079-34:2020 (E)
Annex ZB
(informative)
Information relevant to equipment and protective systems according to
standards harmonized under Directive 2014/34/EU
ZB.1 Introduction

The requirements laid down in the Directive and the standards harmonized under the Directive are the

basis for the quality assurance of the production process and the assessment of the quality system as

well. The quality system must ensure that the products resulting from the regular production process

comply with the types tested in the EU-type examination and with the applicable requirements of the

Directive.

This annex draws attention to a number of standards harmonized under the Directive which can be

used to gain detailed information on specific requirements. These references might be useful for

manufacturers to check whether the safety-relevant aspects are considered in the quality system and

covered by adequate procedures (see 8). They can also be used for internal or external quality audits

(see 9.1 and 9.2).

In quality system assessments according to Annexes IV and VII of Directive 2014/34/EU performed by

a Notified Body the auditing team must have knowledge with regard to the product specific

requirements according to the Directive.

NOTE The following examples do not cover all protection concepts and product specific requirements but

give some advice and will be supplemented to in the next edition.
ZB.2 Non-electrical equipment (EN 13463-1)

Safety aspects are covered by clause A.14 for non-electrical equipment (EN ISO 80079-36).

ZB.3 Protection by flow restricting enclosure "fr" (EN 13463-2)

Safety aspects are covered by the general clause for non-electrical equipment (EN ISO 80079-36).

ZB.4 Protection by flameproof enclosure "d" (EN 13463-3)

The same safety aspects as for electrical equipment apply (see A.3; for aspects of dust ignition

protection, see also A.10).
ZB.5 Protection by constructional safety "c" (EN 13463-5)

Safety aspects are covered by clause A.15 for non-electrical equipment (EN ISO 80079-37).

ZB.6 Protection by control of ignition sources "b" (EN 13463-6)

Safety aspects are covered by clause A.16 for non-electrical equipment (EN ISO 80079-37).

ZB.7 Protection by pressurised enclosures "p" (EN 13463-7)

The same safety aspects as for electrical equipment apply (A.6), according to A.14.1.

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SIST EN ISO/IEC 80079-34:2020
EN ISO/IEC 80079-34:2020 (E)
ZB.8 Protection by liquid immersion "k" (EN 13463-8)

Safety aspects are covered by clause A.17 for non-electrical equipment (EN ISO 80079-37).

ZB.9 Fans (EN 14986)
ZB.9.1 General

The following safety aspects as specified in the technical file should be realised by systematic

production techniques and/or verifications and tests on the basis of written procedures.

ZB.9.2 Material
 Selection of specified materials; material name complies with the requirement;

 material properties (composition with regard to corrosion, thermal conduction and mechanical

sparks, mass fraction of aluminium, titanium, magnesium, zirconium, flammability);

 cracks, inclusions, blow holes and porosity (either by a visual test or another suitable test method

depending on exposure);
 heat treatment (e.g. hardening, tempering);
 dimensional accuracy including all parts without machining.
ZB.9.3 Assembled equipment and protective systems

 Adaption of suitable electrical equipment (explosion group, temperature class, equipment

category);
 adaption of specified protective systems for fans of category 1G.
ZB.9.4 Routine tests
 Sealing systems (fit, lubrication, initial tension, primary pressure);

 dynamic vibrations (e.g. critical rotation speed, bearing at standstill or at transport);

 functional test of the complete assembly (distance between rotor/stator modules, clamping,

clearance, free room of motion);
 excess rotation speed;
 thickness of linings;

 impeller-shaft attachment (avoidance of drift, joint is secured against loosening);

 mounting of autonomous protective systems, if applicable;

 functional test of the temperature monitoring devices in the flame arresters, if applicable;

 pressure test for fans of category 1G, if applicable.
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SIST EN ISO/IEC 80079-34:2020
EN ISO/IEC 80079-34:2020 (E)
ZB.10 Petrol dispensers (EN 13617-1)
ZB.10.1 General

The following safety aspects as specified in the technical file should be realised by systematic

production techniques and/or verifications and tests on the basis of written procedures.

ZB.10.2 Electrical installation
 Type of cable;
 installation of cable;
 correct wiring;
 connection technique;
 torque of screwed connections (traceability).
ZB.10.3 Information for safe operation
 Availability of operating instructions;
 marking on the type label (technical data, type of protection, etc.);
 passing on of warning notes;
 maintenance instructions.
ZB.10.4 Assembly groups
 Drives or electrical equipment;
 subassemblies (gears, couplings, belts);
 components;

 safety-relevant verifications for the interconnection of apparatus, subassemblies and components;

 protective systems within the gas recirculation system.
ZB.10.5 Assembling
 Correct components and parts;
 minimum distances of moving parts (rotor/stator);

 measures performed for equipotential bonding (to ground, between subassemblies);

 protective covers.
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SIST EN ISO/IEC 80079-34:2020
EN ISO/IEC 80079-34:2020 (E)
ZB.10.6 Monitoring equipment

 Installation of sensors and actuators (fail safe characteristics, separate power supply);

 installation of sensors (position, correct interfacing, prevention of lag elements);

 tests during maintenance (according to operating instructions);
 functional tests and precision control;
 insulation of cables.
For additional information, see also ZB.6.
ZB.10.7 Electrostatic discharge capacity

 Materials (electrostatic discharge capacity resp. surface resistance of non-metallic parts, belts,

tubes, etc.);
 limitation of the surface area for the corresponding explosion group;
 thickness of the material for the corresponding explosion group.
ZB.10.8 Routine tests
 Pressure test;
 deactivation/activation of the controlling system before release;
 insulation resistance;
 functional test.
ZB.11 Electrostatic spraying equipment
ZB.11.1 General

The following safety aspects as specified in the technical file should be realised by systematic

production techniques and/or verifications and tests on the basis of written procedures.

Electrostatic spraying equipment according to the following harmonized standards:

 EN 50050-1,
 EN 50050-2,
 EN 50050-3,
 EN 50176,
 EN 50177,
 EN 50223.

NOTE This section ZB.11 may also be used for electrostatic spraying equipment in accordance with EN 50059

and EN 50348 harmonized under directive 2006/42/EC.
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SIST EN ISO/IEC 80079-34:2020
EN ISO/IEC 80079-34:2020 (E)
ZB.11.2 Electrical assembly

The characteristics of the following parts including control devices and accessories should be tested

with respect to the application in electrostatic spraying equipment; this means normally that the

marking on the component parts or the packaging is verified where appropriate statistical methods

may be applied as necessary:

 selection of the high voltage transformer (type, manufacturer, insulation, voltage);

 equipotential bonding and grounding system for the spraying equipment and control device;

 number of stages of the cascade and turn ratio of the high-voltage transformer and the capacity of

the cascade;

 assembling, type and value of each current limiting resistor, diode, Zener diode, capacitor or any

other safety-relevant component (e.g. hardware-watch-dog);
 manual or automatic assembly of printed circuit boards;
 fixing and soldering of transformer, diodes, capacitors of the cascades;
 date of expiry and storage of adhesives and casting compounds;
 mixing procedures (e.g. pressure, temperature, time characteristics);

 surface treatment (degreasing or equivalent measures are usually required immediately before the

potting process to ensure proper adhesion);

 processing, e.g. filling instructions, void-free potting, temperature conditions;

 curing process including: curing time, all relevant environmental factors, provisions made to ensure

that the curing process will proceed (e.g. mains power failure detection);
 selection and installation of the display;

 selection and installation of power supply and line filter of the control device;

 selection of cable (high voltage, low voltage);

 length, type and electric strength of the cable including grounding and screening if applicable;

 connection techniques and fixing method of cables between controlling device and spraying

equipment.

NOTE 1 For printed circuit boards, the manufacturer should provide a list of safety-relevant electronic

components (e.g. resistors, Zener diodes) used. 100 % of the listed components should be tested. This can be done

by visual test or for SMD-components by assuring correct charging of the component insertion automat and by

visual test of correct positioning or by automated test equipment (ATE) provided that each individual safety-

relevant electronic component is considered and that a visual inspection is performed to check the type code and

direction of components.

NOTE 2 If the SMD-insertion automat selects the correct component carrier on the basis of a value

measurement of the component, this measuring function should be calibrated.
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SIST EN ISO/IEC 80079-34:2020
EN ISO/IEC 80079-34:2020 (E)
ZB.11.3 Mechanical assembly

 Materials of spraying equipment and control devices should be inspected for stability, cracks,

inclusions, bubbling and porosity;

 dimensional accuracy, evenness, surface roughness, fitting accuracy, depth of bushings, flanges and

threads of the nozzles of spraying equipment and accessories (extensions, angles, etc.);

 dimensional accuracy and position accuracy of the electrode(s) with respect to the nozzle;

 uniformity of joints;
 gaps and dimensions between the bell and the stator;
 balancing of rotating parts;
 mounting of spraying equipment and control unit;
 torque of the screwed connections if safety relevant;
 IP protection (see ZB.2.6 for details);
 continuous weld seams;
 mounting of annular and flat gaskets;
 continuity of moulded tongues and grooves;
 application of adhesives.
ZB.11.4 Tests
 I and I of the spraying equipment with and without associated accessories;
max short-circuit
 U of the spraying equipment with and without associated accessories;
max

 open-circuit monitoring between spraying equipment and control device, if applicable;

 response of the safety facilities in case of simulated malfunction, if applicable.

Where spraying equipment and associated accessories are intended to be combined user-defined,

criteria of acceptance for the tests should consider the worst case.
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SIST EN ISO/IEC 80079-34:2020
EN ISO/IEC 80079-34:2020 (E)
ZB.12 Protective systems
ZB.12.1 General

The following safety aspects as specified in the technical file should be realised by systematic

production techniques and/or verifications and tests on the basis of written procedures:

 the properties of dissipative plastics are proven by the manufacturer by dint of a material

certificate and examined at least through routine tests (e.g. in accordance with HD 429, neglecting

the climate);

 layer thicknesses of non-conductive coatings are examined by routine tests at a sufficient amount of

adequate measuring points;

 packing boxes without a temperature control are tightened with a predefined torque;

 every examination is documented.

NOTE Routine tests can be a requirement in certificates or be required by the auditing notified body.

ZB.12.2 Explosion resistant equipment (EN 14460)

The following safety aspects as specified in the technical file should be realised by systematic

production techniques and/or verifications and tests on the basis of written procedures:

 pressure shock resistant devices are manufactured according to EN 13445-4, if designed according

to EN 13445-3;
 pressure test for each cast part is carried out;

 pressure test is carried out according to EN 14460:2018, Table 1, lasting at least 3 min (routine

test); if this is impossible due to technical or safety-relevant reasons, there must be material;

 certificates according to EN 10204, or non-destructive tests of the weld seams (at least supersonic)

as well as a dimensions comparison must be carried through;
 weld seams are tested considering the weld seam factor;

 material certificates according to EN 13445-2 are available for the pressure-loaded main parts;

 correct marking and warning labels (e.g. maximum operational pressure, maximum operational

temperature, if necessary);
 correct assembling.
For further aspects regarding pressure resistance, see A.3 of this standard.
ZB.12.3 Explosion venting devices (EN 14797)

The following safety aspects as specified in the technical file should be realised by systematic

production techniques and/or verifications and tests on the basis of written procedures:

 the static activation overpressure (see EN 14491);
 leak test, if applicable;
---------------------- Page: 14 ----------------------
SIST EN ISO/IEC 80079-34:2020
EN ISO/IEC 80079-34:2020 (E)

 material certificates for the explosion venting devices (e.g. for the plates processed, rubber clamp

profiles);

 stability tests are required for explosion venting valves as well as for the baskets for flameless

devices;

 dimensional accuracy (e.g. gaps, predetermined breaking points of the bursting discs, wall

thicknesses of the processed plates;
 gaskets;
 mass of the insulation, if applicable;
 heating installations on the moveable elements, if applicable;
 weld seams are tested considering the weld seam factor;

 correct marking and warning labels (e.g. maximum operational pressure, maximum operational

temperature, if necessary);
 correct assembling;
 number of tests according Table 2 (EN 14797) for non-reusable venting devices.
ZB.12.4 Explosion isolation systems (EN 15089)

The following safety aspects as specified in the technical file should be realised by systematic

production techniques and/or verifications and tests on the basis of written procedures:

 closing time of the system (sum of the activation time of sensor, activation time of isolation device

and closing time of the isolation device) are tested in routine tests (see EN 15089);

 operating values of all sensors (e.g. pressure, temperature, light);

 correct implementation of required safety functions (e.g. control and indicating equipment

settings);
 dimensional accuracy, particularly of the sealing elements;
 dimensions of enclosure, rotors, blades, discs and gaskets;
 gaps between rotors and enclosures of rotary valves;

 mechanical integrity for the maximum explosion overpressure according to the intended use;

 closing force of passive explosion protection valves;

 installations in the interior necessary for safe operation (e.g. rotors of rotary valves, blades, discs,

sleeves);
 proof of material (e.g. type of steel, suppressant);
 welding procedure, if applicable;
---------------------- Page: 15 ----------------------
SIST EN ISO/IEC 80079-34:2020
EN ISO/IEC 80079-34:2020 (E)

 correct marking and warning labels (e.g. maximum operational pressure, maximum operational

temperature, if necessary);
 correct assembling;
 maintenance when the wear limit is reached (in case of rotary valves);

 use of the correct extinguishing powder and filling quantity (in case of extinguishing barriers);

 information on maintenance.
ZB.12.5 Flameless explosion venting devices (EN 16009)

A flameless venting device is a combination of a venting device with flame extinguishing elements.

The following safety aspects as specified in the technical file should be realized by systematic

production techniques and/or verifications and tests on the basis of written procedures:

 all aspects of ZB.12.3 "Explosion venting devices" (EN 14797);
 material certificates of the flame extinguishing elements;

 dimensional accuracy of the flame extinguishing elements (e.g. gaps, layer thickness);

 gaskets;

 pressure resistance of the mechanical mounting / casing of the flame extinguishing elements;

 correct assembling;
 information on maintenance;

 correct marking and warning labels (e.g. maximum operational pressure, maximum operational

temperature, if necessary).
ZB.12.6 Explosion diverters (EN 16020)
An explosion diverter is a mech
...

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