SIST EN 1755:2016
(Main)Safety of industrial trucks - Operation in potentially explosive atmospheres - Use in flammable gas, vapour, mist and dust
Safety of industrial trucks - Operation in potentially explosive atmospheres - Use in flammable gas, vapour, mist and dust
This European Standard applies to self-propelled and pedestrian propelled manual and semi-manual industrial trucks (hereafter often referred to as trucks) for use in potentially explosive atmospheres including their load handling devices and removable attachments.
Fork arms, load platforms or integrated attachments are considered to be parts of the truck. Attachments mounted on the load carrier or on fork arms which are removable by the user are not considered to be a part of the truck
This European Standard deals only with the prevention of the ignition of an explosive atmosphere by industrial trucks and describes the additional requirements for trucks of equipment group II and equipment category 2G, 3G, 2D and 3D.
The relationship between equipment categories and the respective zones is shown in Annex B.
This standard does not cover trucks for category 1 and trucks intended for use in explosive atmospheres with hybrid mixtures.
All trucks intended for use in potentially explosive atmospheres within the scope of this European Standard need to comply with the requirements stated in this European Standard. Where additional hazards could occur, an ignition hazard assessment according to EN 13463-1:2009 will be carried out, taking into consideration these special circumstances and additional requirements contained in EN 13463-1:2009 and if relevant modified by the specific parts of EN 13463 for other types of protection.
This European Standard covers the technical requirements necessary to avoid or minimize the significant hazards listed in Annex A , which could occur during normal operation, maintenance or foreseeable misuse (in accordance with the data given by the manufacturer) of industrial trucks.
This European standard does not apply to trucks intended for use in hazardous atmospheres with carbon disulfide (CS2), carbonmonoxide (CO) and/or ethylenoxide (C2H4O) due to special properties of these gases.
Trucks marked IIB+H2 and/or C2H2 (hydrogen and/or acetylene) are also suitable for IIA or IIB atmospheres.
This European Standard is valid for atmospheres with an ambient temperature range of -20 °C to +40 °C, i.e. trucks built to this European Standard will be satisfactory to any service conditions within this range unless otherwise specified.
NOTE The ambient temperature range (-20 °C to +40) °C is in line with EN 3691-1.
Sicherheit von Flurförderzeugen - Einsatz in explosionsgefährdeten Bereichen - Verwendung in Bereichen mit brennbaren Gasen, Dämpfen, Nebeln oder Stäuben
Diese Europäische Norm gilt für motorkraftbetriebene und mitgängerbetriebene manuelle und halbmanuelle Flurförderzeuge (nachfolgend häufig als Flurförderzeuge bezeichnet) für die Verwendung in explosions-gefährdeten Bereichen einschließlich deren Lastaufnahmemittel und abnehmbare, Anbaugeräte.
Gabelarme, Ladeflächen oder integrierte Anbaugeräte kommen als Teile des Flurförderzeugs in Betracht. Am Lastträger oder auf Gabelarmen angebrachte Anbaugeräte, die durch den Benutzer abnehmbar sind, werden nicht als ein Teil des Flurförderzeugs angesehen.
Diese Europäische Norm befasst sich nur mit der Verhinderung der Zündung einer explosionsfähigen Atmosphäre durch Flurförderzeuge und beschreibt die zusätzlichen Anforderungen an Flurförderzeuge der Gerätegruppe II und Gerätekategorie 2G, 3G, 2D und 3D.
Der Zusammenhang zwischen Gerätekategorien und den jeweiligen Zonen ist in Anhang B dargestellt.
Diese Norm gilt nicht für Flurförderzeuge der Kategorie 1 und Flurförderzeuge, die für den Einsatz in explosionsfähigen Atmosphären mit Hybridgemischen vorgesehen sind.
Alle Flurförderzeuge, die im Rahmen des Anwendungsbereichs dieser Europäischen Norm für den Einsatz in explosionsgefährdeten Bereichen vorgesehen sind, müssen den in dieser Europäischen Norm festgelegten Anforderungen entsprechen. Könnten zusätzliche Gefährdungen auftreten, muss unter Berücksichtigung dieser besonderen Umstände und der in EN 13463-1:2009 aufgeführten zusätzlichen Anforderungen und, falls zutreffend, modifiziert durch die speziellen Teile von EN 13463 für andere Schutzarten, eine Zünd-gefahrenbewertung nach EN 13463-1:2009 vorgenommen werden.
Diese Europäische Norm behandelt die technischen Anforderungen, die zur Vermeidung oder Minimierung der in Anhang A aufgeführten bedeutenden Gefährdungen notwendig sind, die bei normalem Betrieb, Wartung oder vorhersehbarer Fehlanwendung (in Übereinstimmung mit den Daten des Herstellers) von Flurförderzeugen auftreten könnten.
Wegen der besonderen Eigenschaften dieser Gase gilt diese Europäische Norm nicht für Flurförderzeuge, die für den Einsatz in explosionsfähigen Atmosphären mit Schwefelkohlenstoff (CS2), Kohlenmonoxid (CO) und/oder Ethylenoxid (C2H4O) vorgesehen sind.
Mit IIB + H2 und/oder C2H2 (Wasserstoff und/oder Acetylen) gekennzeichnete Flurförderzeuge eignen sich auch für explosionsfähige Atmosphären IIA oder IIB.
Diese Europäische Norm gilt für Atmosphären mit einer Umgebungstemperatur im Bereich von –20 °C bis +40 °C, d. h. nach dieser Europäischen Norm gebaute Flurförderzeuge sind in diesem Bereich unter allen Betriebsbedingungen zufriedenstellend einsetzbar, sofern nicht anders festgelegt.
ANMERKUNG Der Umgebungstemperaturbereich (-20 °C bis +40 °C) ist in Übereinstimmung mit EN 3691-1.
Sécurité des chariots de manutention - Fonctionnement en atmosphères explosibles - Utilisation dans des atmosphères inflammables dues à la présence de gaz, de vapeurs, brouillards ou poussières inflammables
La présente Norme européenne s'applique aux chariots automoteurs et aux chariots à conducteur accompagnant manuels et semi-manuels (fréquemment désignés ci-après par « chariots ») destinés à être utilisés en atmosphères explosibles ainsi qu'à leurs dispositifs de manutention des charges et équipements démontables.
Les bras de fourche, plates-formes de charge ou équipements intégrés sont considérés comme faisant partie intégrante du chariot. Les accessoires démontables par l'utilisateur qui sont installés sur la plate-forme ou sur les bras de fourche ne sont pas considérés comme faisant partie intégrante du chariot.
La présente Norme européenne se limite à la prévention des risques d'inflammation en atmosphère explosive dus aux chariots de manutention et décrit les exigences complémentaires applicables aux chariots du groupe de matériel II et des catégories de matériel 2G, 3G, 2D et 3D.
L'Annexe B illustre la relation entre les catégories de matériel et les zones respectives.
La présente norme ne couvre pas les chariots de la catégorie 1 ni les chariots destinés à être utilisés en atmosphères explosives constituées de mélanges hybrides.
Tous les chariots destinés à être utilisés dans les atmosphères explosibles concernées par la présente Norme européenne doivent être conformes aux exigences énoncées dans la présente Norme européenne. Lorsque des phénomènes dangereux supplémentaires sont susceptibles de se produire, le risque d'inflammation sera évalué conformément à la norme EN 13463-1:2009, en tenant compte des circonstances spécifiques et des exigences complémentaires énoncées dans la norme EN 13463-1:2009, celles-ci pouvant être modifiées, si nécessaire, par les parties spécifiques de la norme EN 13463 relative aux autres types de protection.
La présente Norme européenne traite des prescriptions techniques nécessaires pour éviter ou réduire les phénomènes dangereux significatifs listés en Annexe A pouvant survenir pendant l'utilisation normale, la maintenance ou le mauvais usage prévisible des chariots de manutention (conformément aux indications données par le fabricant).
La présente Norme européenne ne s'applique pas aux chariots destinés à être utilisés en atmosphères dangereuses contenant du sulfure de carbone (CS2), du monoxyde de carbone (CO) et/ou de l'oxyde d'éthylène (C2H4O), en raison des propriétés spécifiques de ces gaz.
Les chariots marqués IIB+H2 et/ou C2H2 (hydrogène et/ou acétylène) conviennent également aux atmosphères IIA ou IIB.
La présente Norme européenne est applicable dans les atmosphères dont la température ambiante est comprise entre -20°C et +40°C, c’est-à-dire sauf indication contraire, les chariots fabriqués conformément à la présente Norme européenne satisferont à toutes les conditions de service dans cette plage de température.
NOTE La plage de température ambiante (de -20°C à +40°C) est conforme à la norme EN 3691-1.
Varnost vozil za talni transport - Obratovanje v potencialno eksplozivnih atmosferah - Uporaba v območju vnetljivega plina, pare, megle in prahu
Ta evropski standard velja za industrijska vozila z lastnim pogonom ter ročno in napol ročno gnana vozila (v nadaljevanju pogosto imenovana »vozila«) za uporabo v potencialno eksplozivnih atmosferah, vključno z njihovimi napravami za delo z bremenom in odstranljivimi priključki.
Vilice, nakladalne platforme ali integrirani priključki se obravnavajo kot deli vozila. Priključki, nameščeni na nosilec bremena ali na vilice, ki jih lahko odstrani uporabnik, se ne obravnavajo kot del vozila
Ta evropski standard obravnava le preprečevanje vžiga eksplozivne atmosfere s strani industrijskih vozil in opisuje dodatne zahteve za vozila skupine opreme II in kategorije opreme 2G, 3G, 2D in 3D.
Razmerje med kategorijami opreme in ustreznimi območji je prikazano v dodatku B.
Ta standard ne pokriva vozil za kategorijo 1 in vozil, namenjenih za uporabo v eksplozivnih atmosferah s hibridnimi mešanicami.
Vsa vozila, namenjena za uporabo v potencialno eksplozivnih atmosferah v obsegu tega evropskega standarda, morajo ustrezati zahtevam, podanim v tem evropskem standardu. Kjer lahko pride do dodatnih nevarnosti, bo izvedena ocena nevarnosti vžiga po standardu EN 13463-1:2009, pri čemer bodo upoštevane te posebne okoliščine in dodatne zahteve v standardu EN 13463-1:2009 ter po potrebi spremenjene v določenih delih standarda EN 13463 za druge vrste zaščite.
Ta evropski standard pokriva tehnične zahteve, potrebne za izogibanje ali zmanjšanje večjih nevarnosti, opredeljenih v dodatku A, do katerih lahko pride med običajnim delovanjem, vzdrževanjem ali predvidljivo nepravilno uporabo (skladno s podatki, ki jih zagotovi proizvajalec) industrijskih vozil.
Ta evropski standard ne velja za vozila, namenjena za uporabo v nevarnih atmosferah z ogljikovim disulfidom (CS2), ogljikovim monoksidom (CO) in/ali etilenoksidom (C2H4O) zaradi posebnih lastnosti teh plinov.
Vozila z oznako IIB + H2 in/ali C2H2 (vodik in/ali acetilen) so primerna tudi za atmosfero IIA ali IIB.
Ta evropski standard velja za atmosfere z razponom temperature v prostoru med -20 in +40 °C, tj. vozila, izdelana v skladu s tem evropskim standardom, bodo ustrezala poljubnim servisnim pogojem znotraj tega razpona, razen če ni določeno drugače.
OPOMBA Razpon temperature prostora (od -20 do +40 °C) je skladen s standardom EN 3691-1.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 1755:2016
01-februar-2016
1DGRPHãþD
SIST EN 1755:2001+A2:2013
9DUQRVWYR]LO]DWDOQLWUDQVSRUW2EUDWRYDQMHYSRWHQFLDOQRHNVSOR]LYQLK
DWPRVIHUDK8SRUDEDYREPRþMXYQHWOMLYHJDSOLQDSDUHPHJOHLQSUDKX
Safety of industrial trucks - Operation in potentially explosive atmospheres - Use in
flammable gas, vapour, mist and dust
Sicherheit von Flurförderzeugen - Einsatz in explosionsgefährdeten Bereichen -
Verwendung in Bereichen mit brennbaren Gasen, Dämpfen, Nebeln oder Stäuben
Sécurité des chariots de manutention - Fonctionnement en atmosphères explosibles -
Utilisation dans des atmosphères inflammables dues à la présence de gaz, de vapeurs,
brouillards ou poussières inflammables
Ta slovenski standard je istoveten z: EN 1755:2015
ICS:
13.230 Varstvo pred eksplozijo Explosion protection
53.060 Industrijski tovornjaki Industrial trucks
SIST EN 1755:2016 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 1755:2016
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SIST EN 1755:2016
EN 1755
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2015
EUROPÄISCHE NORM
ICS 53.060 Supersedes EN 1755:2000+A2:2013
English Version
Industrial Trucks - Safety requirements and verification -
Supplementary requirements for operation in potentially
explosive atmospheres
Chariots de manutention - Prescriptions de sécurité et Sicherheit von Flurförderzeugen - Einsatz in
vérification - Prescriptions supplémentaires pour le explosionsgefährdeten Bereichen - Verwendung in
fonctionnement en atmosphères explosibles Bereichen mit brennbaren Gasen, Dämpfen, Nebeln
oder Stäuben
This European Standard was approved by CEN on 24 July 2015.
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
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 1755:2015 E
worldwide for CEN national Members.
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SIST EN 1755:2016
EN 1755:2015 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 8
4 Safety requirements and/or protective measures . 11
4.1 General . 11
4.2 Hot surfaces . 12
4.3 Safety shutdown . 13
4.4 Mechanically generated sparks . 13
4.5 Electrical system . 14
4.6 Internal combustion engines . 17
4.7 Electrostatic risks . 17
4.8 Requirements for brakes, clutches and couplings . 21
4.9 Requirements for pneumatic systems . 23
4.10 Category 3G trucks equipped with restricted breathing enclosures “nR” and gas
detection systems . 23
4.11 Flammability of non-metallic materials . 25
5 Verification of safety requirements and/or protective measures . 26
5.1 Determination of the maximum surface temperatures . 26
5.2 Measurement of circuit resistance and capacitance . 30
6 Information for use . 32
6.1 General . 32
6.2 Instruction handbook . 32
6.3 Marking . 34
6.4 Warning labels . 35
Annex A (normative) List of significant hazards . 36
Annex B (informative) Relationship between zones (area classification) and truck categories . 37
Annex C (informative) Typical example of cladding of load handling devices . 38
Annex D (informative) Typical examples of non-conductive surface areas according to 4.7.3.1 39
Annex E (normative) Requirements for transmission belts in accordance with ISO 9563 or
ISO 1813. 42
Annex F (informative) Significant technical changes between this document and the previous
edition of this European Standard . 43
Annex G (informative) Warning labels for trucks with restricted breathing enclosure(s) . 47
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 94/9/EC . 48
Bibliography . 51
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SIST EN 1755:2016
EN 1755:2015 (E)
European foreword
This document (EN 1755:2015) has been prepared by Technical Committee CEN/TC 150 “Industrial
Trucks - Safety”, the secretariat of which is held by BSI.
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 May 2016, and conflicting national standards shall be
withdrawn at the latest by November 2017.
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.
This document supersedes EN 1755:2000+A2:2013.
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 Directive(s), see informative Annex ZA, which is an integral part of this document.
Informative Annex F provides details of significant technical changes between this document and the
previous edition: EN 1755:2000+A2:2013.
This document is one of a series of European Standards for the safety of industrial trucks which are listed
in 4.1 and in the Bibliography.
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.
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SIST EN 1755:2016
EN 1755:2015 (E)
Introduction
This standard is a type-C standard as stated in EN ISO 12100.
The machinery concerned and the extent to which hazards, hazardous situations and hazardous events are
covered, are indicated in the scope of this standard.
When provisions of this type C standard are different from those which are stated in type A or B standards,
the provisions of this type C standard take precedence over the provisions of the other standards for
machines that have been designed and built in accordance with the provisions of this type C standard.
This standard (EN 1755:2015) covers safety requirements and their verification for industrial trucks as
defined in ISO 5053-1 that are not covered exhaustively by:
— EN 1459;
— EN 1526;
— EN 1757-3;
— EN ISO 3691-1;
— EN ISO 3691-5;
— EN ISO 3691-6;
NOTE The above-mentioned standards are listed in the Bibliography or in Clause 2.
Assessment of hazards
The industrial truck needs to be designed in such a way that it is fit for its purpose or function and can be
adjusted and maintained without putting persons at risk when used under the conditions foreseen (e.g.
explosive atmospheres) by the manufacturer.
In order to properly design an industrial truck and to cover all specific safety requirements, the
manufacturer will have to identify the hazards that apply to the industrial truck and carry out a risk
assessment. The manufacturer will then need to design and construct the industrial truck taking this
assessment into account.
The aim of this procedure is to eliminate the risk of accidents throughout the foreseeable lifetime of the
machinery, including the phases of assembling and dismantling where risks of accidents could also arise
from foreseeable abnormal situations.
In selecting the most appropriate methods, the manufacturer will need to apply the following principles, in
the order given here:
— eliminate or reduce risks as far as possible by design (inherently safe machinery design and
construction);
— take the necessary protective measures in relation to risks that cannot be eliminated by design;
— inform users of any shortcoming of the protective measures adopted;
— indicate whether any particular training is required;
— specify any need to provide personal protection equipment;
— refer to the appropriate user's document for proper operating instructions.
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EN 1755:2015 (E)
Industrial trucks need to be designed to prevent foreseeable misuse wherever possible, if such would
engender risk. In other cases, the instructions will need to draw the user's attention to ways shown by
experience in which the machinery ought not to be used.
This standard (EN 1755:2015) does not repeat all the technical rules which are state-of-the art and which
are applicable to the material used to construct the industrial truck. Reference will also need to be made to
EN ISO 12100.
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EN 1755:2015 (E)
1 Scope
This European Standard applies to self-propelled and pedestrian propelled manual and semi-manual
industrial trucks as defined in ISO 5053-1 including their load handling devices and attachments (hereafter
referred to as trucks) intended for use in potentially explosive atmospheres.
NOTE 1 Attachments mounted on the load carrier or on fork arms which are removable by the user are not
considered to be a part of the truck.
This European Standard specifies supplementary technical requirements for the prevention of the ignition
of an explosive atmosphere of flammable gases, vapours, mists or dusts by industrial trucks of equipment
group II and equipment category 2G, 3G, 2D or 3D.
NOTE 2 The relationship between an equipment category (hereafter referred to as category) and the
corresponding zone (area classification) is shown in informative Annex B.
This European Standard does not include:
— trucks of equipment group I;
— trucks of equipment group II, equipment category 1;
— trucks intended for use in potentially explosive atmospheres with hybrid mixtures;
— protective systems.
This European Standard is not applicable to trucks intended for use in potentially explosive atmospheres
of carbon disulphide (CS ), carbon monoxide (CO) and/or ethylene oxide (C H O) due to the special
2 2 4
properties of these gases.
This standard is applicable to trucks intended for use in atmospheres with an ambient temperature range
of - 20 °C to +40 °C, i.e. trucks built in accordance with this European Standard will be satisfactory to any
service conditions within this range unless otherwise specified.
NOTE 3 The ambient temperature range -20 °C to +40 °C is in line with EN ISO 3691-1.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
EN 1127-1:2011, Explosive atmospheres - Explosion prevention and protection - Part 1: Basic concepts and
methodology
EN 1149-5, Protective clothing - Electrostatic properties - Part 5: Material performance and design
requirements
EN 1175-1:1998+A1:2010, Safety of industrial trucks - Electrical requirements - Part 1: General
requirements for battery powered trucks
EN 1175-2, Safety of industrial trucks ― Part 2: Electrical requirements for internal combustion engine
powered trucks
EN 1175-3, Safety of industrial trucks ― Part 3: Electrical requirements for the electric power transmission
systems of internal combustion engine powered trucks
EN 1459, Safety of industrial trucks ― Self-propelled variable reach trucks
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EN 1755:2015 (E)
EN 1525, Safety of industrial trucks - Driverless trucks and their systems
EN 1757-3, Safety of industrial trucks - Pedestrian controlled manual and semi-manual trucks - Part 3:
Platform trucks
EN 1834-1:2000, Reciprocating internal combustion engines - Safety requirements for design and
construction of engines for use in potentially explosive atmospheres - Part 1: Group II engines for use in
flammable gas and vapour atmospheres
EN 1834-3, Reciprocating internal combustion engines - Safety requirements for design and construction of
engines for use in potentially explosive atmospheres - Part 3: Group II engines for use in flammable dust
atmospheres
EN 13463-1:2009, Non-electrical equipment for use in potentially explosive atmospheres - Part 1: Basic
method and requirements
EN 13463-3, Non-electrical equipment for use in potentially explosive atmospheres - Part 3: Protection by
flameproof enclosure 'd'
EN 13463-5:2011, Non-electrical equipment intended for use in potentially explosive atmospheres - Part 5:
Protection by constructional safety 'c'
EN 13463-8, Non-electrical equipment for potentially explosive atmospheres - Part 8: Protection by liquid
immersion 'k'
EN 14986, Design of fans working in potentially explosive atmospheres
EN 50271, Electrical apparatus for the detection and measurement of combustible gases, toxic gases or
oxygen - Requirements and tests for apparatus using software and/or digital technologies
EN 60079-0:2012, Explosive atmospheres - Part 0: Equipment - General requirements ( IEC 60079-0:2011,
modified)
EN 60079-7, Explosive atmospheres - Part 7: Equipment protection by increased safety "e" (IEC 60079-7)
EN 60079-14:2014, Explosive atmospheres - Part 14: Electrical installations design, selection and erection
(IEC 60079-14:2012)
EN 60079-15:2010, Explosive atmospheres - Part 15: Equipment protection by type of protection "n" (IEC
60079 15:2010)
EN 60079-17, Explosive atmospheres ― Part 17: Electrical installations inspection and maintenance
(IEC 60079-17)
EN 60079-29-1:2007, Explosive atmospheres - Part 29-1: Gas detectors - Performance requirements of
detectors for flammable gases (IEC 60079-29-1:2007)
EN 60079-29-2, Explosive atmospheres ― Part 29-2: Gas detectors ― Selection, installation, use and
maintenance of detectors for flammable gases and oxygen (IEC 60079-29-2)
EN 60079-31, Explosive atmospheres ― Equipment dust ignition protection by enclosure "t" (IEC 60079-31)
CLC/TR 60079-32-1, Explosive atmospheres - Part 32-1: Electrostatic hazards, guidance
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EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)
EN 61508-1, Functional safety of electrical/electronic/programmable electronic safety-related systems - Part
1: General requirements (IEC 61508-1)
EN 61508-6, Functional safety of electrical/electronic/programmable electronic safety-related systems - Part
6: Guidelines on the application of IEC 61508-2 and IEC 61508-3 (IEC 61508-6)
EN ISO 3691-1, Industrial trucks - Safety requirements and verification - Part 1: Self-propelled industrial
trucks, other than driverless trucks, variable-reach trucks and burden-carrier trucks (ISO 3691-1:2011)
EN ISO 13849-1, Safety of machinery - Safety-related parts of control systems - Part 1: General principles for
design (ISO 13849-1)
EN ISO 20344, Personal protective equipment - Test methods for footwear (ISO 20344)
ISO 284, Conveyor belts — Electrical conductivity — Specification and test method
ISO 1813, Belt drives — V-ribbed belts, joined V-belts and V-belts including wide section belts and hexagonal
belts — Electrical conductivity of antistatic belts: Characteristics and methods of test
ISO 9563, Belt drives — Electrical conductivity of antistatic endless synchronous belts — Characteristics and
test method
ISO 15870, Powered industrial trucks — Safety signs and hazard pictorials — General principles
3 Terms and definitions
For the purpose of this document, the following terms and definitions apply.
3.1
explosive atmosphere
mixture with air, under atmospheric conditions, of flammable substances in the form of gases, vapours,
mists or dusts in which, after ignition has occurred, combustion spreads to the entire unburned mixture
[SOURCE: EN 13237:2012, 3.28]
3.2
potentially explosive atmosphere
atmosphere which could become explosive due to local and operational conditions
[SOURCE: EN 13237:2012, 3.28.2]
3.3
hybrid mixture
mixture of flammable substances with air in different physical states
[SOURCE: EN 13237:2012, 3.40]
3.4
auto ignition temperature
lowest temperature (of a hot surface) at which under specified test conditions an ignition of a flammable
gas or flammable vapour in mixture with air or air/inert gas occurs
[SOURCE: EN 13237:2012, 3.45]
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EN 1755:2015 (E)
3.5
minimum ignition temperature of a dust cloud
lowest temperature of a hot surface on which the most ignitable mixture of the dust with air is ignited
under specified test conditions
[SOURCE: EN 13237:2012, 3.45.1]
3.6
minimum ignition temperature of a dust layer
lowest temperature of a hot surface at which ignition occurs in a dust layer under specified test conditions
[SOURCE: EN 13237:2012, 3.45.2]
3.7
service temperature
maximum or minimum temperature reached at specific points of the equipment when the equipment is
operating at rated conditions, including ambient temperature and any external sources of heating or
cooling
[SOURCE: EN 60079-0:2012, 3.50]
Note 1 to entry: Each equipment may reach different service temperatures in different parts.
Note 2 to entry: This definition applies to both electrical and non-electrical equipment and components.
3.8
maximum surface temperature
temperature used for marking of the equipment which is the highest temperature that can be attained in
service under the most adverse operating conditions (but within the recognized tolerance) by any part or
surface of equipment or protective system or component which can produce an ignition of the surrounding
explosive atmosphere with an appropriate safety margin
[SOURCE: EN 13463-1:2009, 3.9]
Note 1 to entry: The manufacturer will prescribe the product standard and also in his particular design he should
take into account the following other conditions:
a) fault conditions specified in the standard for the type of protection concerned;
b) all operating conditions specified in any other standard specified by him including recognized overloads; any
other operating condition specified by him.
Note 2 to entry: The relevant surface temperature may be internal or external depending upon the type of
protection concerned.
Note 3 to entry: For equipment intended for use in explosive dust atmospheres, the surface temperature is
determined without any deposited dust on the equipment. See EN 13463-1:2009, 6.2.3.
3.9
wheel
circular structure able to rotate on an axle, either directly or with the use of bearing(s), with the external
part in contact with the ground
[SOURCE: ISO 22877:2004, 1.1.1]
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3.10
castor
assembly comprising a housing, one or more wheels, an axle and, if required, accessories
[SOURCE: ISO 22877:2004, 3.1]
3.11
tyre
outer part of a wheel, produced from different material from the wheel centre
[SOURCE: ISO 22877:2004, 1.1.6]
3.12
service brake
brake system allowing the operator to control, directly or indirectly, the speed of the truck or to bring the
truck to a halt
EXAMPLE The brake can be electrical, hydraulic or mechanical or a combination of the three.
[SOURCE: ISO 6292:2008, 3.12, modified: "braking system" replaced with "brake", addition of an example]
3.13
restricted breathing enclosure “nR”
enclosure that is designed to restrict the entry of gases, vapours and mists
[SOURCE: EN 60079-15:2010, 3.7.3]
3.14
safety function
function to be implemented by a safety device, which is intended to achieve or maintain a safe state for the
equipment under control (EUC), in respect of ignition hazards
Note 1 to entry: See EN 50495 for the definitions of “safety device”, “safe state” and “equipment under control”.
[SOURCE: EN 50495:2010, 3.7, modified, addition of Note 1 to entry]
3.15
safety shutdown
shutdown of a truck or a piece of equipment activated by a safety function to prevent potential ignition
sources from becoming effective
3.16
normal operation
situation when the equipment, protective systems, and components are operating for their intended use
within their design parameters
[SOURCE: EN 13463-1:2009, 3.7]
3.17
malfunction
equipment, protective systems and components do not perform the intended function
[SOURCE: EN 13463-1:2009, 3.8]
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3.18
expected malfunction
disturbances or equipment faults which are known to occur in practice
[SOURCE: EN 13463-1:2009, 3.8.1]
3.19
rare malfunction
type of malfunction which may happen only in rare instances
[SOURCE: EN 13463-1:2009, 3.8.2]
3.20
earthing strap
strap made of conductive or dissipative material strong enough to withstand mechanical and chemical
influences and installed to achieve potential equalization between truck chassis and the floor/ground
3.21
controlled stop
condition in which the truck is in a safe stationary state
3.22
highly efficient electrostatic charge generating mechanism
process that generates a higher rate of electrostatic charge than simple operations
Note 1 to entry: For more information, see EN 13463-1:2009, 6.7.3.
EXAMPLE 1 Rubbing, cleaning with a dry cloth, raising from a seat, walking, wiping of clothes are examples of
simple operations.
EXAMPLE 2 The flow of insulating liquids or powders, high voltage spray charging, running of transmission belts
are examples of highly efficient electrostatic charge generating mechanisms.
4 Safety requirements and/or protective measures
4.1 General
Trucks for use in potentially explosive atmospheres shall comply with the additional requirements given in
4.1 up to and including 4.11.
Where the additional hazards specified in normative Annex A could occur, an ignition hazard assessment
in accordance with EN 1127-1 and EN 13463-1 shall be carried out, taking into consideration these
hazards and the additional requirements contained in EN 13463-1 and if relevant supplemented by the
specific parts of EN 13463 for other types of protection.
Trucks of Group II shall be subdivided according to the explosive gas atmosphere for which they are
intended. See EN 60079-0:2012, 4.2.
Group II subdivisions:
a) IIA;
b) IIB;
c) IIB + H
2;
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d) IIB + C H ;
2 2
e) IIB + H + C H .
2 2 2
NOTE 1 Trucks marked IIB are also suitable for IIA applications.
NOTE 2 Trucks marked IIB+H , IIB+C H or IIB+H +C H are also suitable for IIA or IIB applications.
2 2 2 2 2 2
NOTE 3 Trucks equipped with a gas detection system are specifically marked in accordance with 6.3.3 e).
NOTE 4 H is the chemical formula for hydrogen and C H for acetylene.
2 2 2
Trucks of Group III shall be subdivided according to the explosive dust atmosphere for which they are
intended. See EN 60079-0:2012, 4.3.
Group III subdivisions:
f) IIIA: combustible flyings;
g) IIIB: non-conductive dusts;
h) IIIC: conductive dusts.
Equipment shall be selected taking into consideration any service temperatures measured during the
temperature tests described in 5.1.
4.2 Hot surfaces
4.2.1 General
For category 3G and 2G trucks the maximum surface temperature of any part of the truck shall not exceed
the temperature class or maximum surface temperature defined on the truck marking plate.
For category 3D and 2D trucks the maximum surface temperature of any part of the truck which can come
into contact with dust clouds or dust layers shall not exceed the maximum surface temperature defined on
the truck marking plate.
Maximum surface temperatures shall be determined in accordance with 5.1.
Reduction of surface temperatures by means of thermal insulation is not permitted.
NOTE 1 The relationship between the maximum surface temperature of the equipment and the minimum ignition
temperature of dust layers and dust clouds is given in EN 1127-1:2011, 6.4.2 and EN 60079-14, 5.6.3.3.
NOTE 2 The possible insulation effects of a dust layer on the surface temperatures are taken into account by the
safety margin to the minimum ignition temperature of a dust layer specified in EN 1127-1:2011, 6.4. and EN 60079-
14, 5.6.3.3.
4.2.2 Temperature monitoring
Surface temperatures may be limited by the use of a temperature monitoring and control system which
provides a safety shutdown in accordance with 4.3 if limiting values are exceeded.
For both category 3 and category 2 trucks, the electrical temperature monitoring and control system shall
fulfil the performance level PL =c in accordance with E
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