SIST EN 13463-1:2002

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Non-electrical equipment for potentially explosive atmospheres - Part 1: Basic method and requirements]DKWHYHMatériels non électriques pour utilisation en atmospheres explosibles - Partie 1: Prescriptions et méthode de baseNicht-elektrische Geräte für den Einsatz in explosionsgefährdeten Bereichen - Teil 1: Grundlagen und Anforderungen13.230Varstvo pred eksplozijoExplosion protectionICS:SIST EN 13463-1:2002enTa slovenski standard je istoveten z:EN 13463-1:200101-marec-2002SIST EN 13463-1:2002SLOVENSKI
STANDARD







EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13463-1November 2001ICS 13.230English versionNon-electrical equipment for potentially explosive atmospheres -Part 1: Basic method and requirementsMatériels non électriques pour utilisation en atmosphèresexplosibles - Partie 1: Prescriptions et méthode de baseNicht-elektrische Geräte für den Einsatz inexplosionsgefährdeten Bereichen - Teil 1: Grundlagen undAnforderungenThis European Standard was approved by CEN on 14 October 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13463-1:2001 E



EN 13463-1:2001 (E)2ContentspageForeword.41Scope.52Normative references.63Terms and definitions.64Equipment categories and explosion groups.94.1Equipment category.94.2Explosion groups (subdivisions).94.3Specific explosive atmospheres.105General.105.1General requirements.105.2Ignition hazard assessment.105.2.1Formal analysis.105.2.2Assessment for equipment-group I.105.2.3Assessment for equipment-group II.115.2.4Assessment with faults.115.2.5Establishing the maximum surface temperature.115.2.6Dust deposits and other material in the gap of moving parts.115.2.7Ignition hazard assessment.125.2.8Ignition hazard assessment report.125.3Openings of enclosures.135.4Category 1 equipment.135.5Category M1 equipment.136Temperatures.136.1Maximum surface temperature.136.1.1Equipment-group I.136.1.2Equipment-group II G.146.1.3Equipment-group II D.146.1.4Design temperatures.157Non metallic parts of the equipment.157.1General.157.2Specification of the materials.157.3Thermal endurance.157.4Electrostatic charges of parts of the equipment.157.4.1General.157.4.2Occurrence of highly efficient charge generating mechanisms (leading to propagating brushdischarges on non-conductive layers and coatings).157.4.3Equipment-group I.167.4.4Equipment-group II.168Equipment containing light metals.178.1Equipment-group I.178.2Equipment-group II.179Removable parts.1710Materials used for cementing.1711Connection facilities for earthing conducting parts.1812Light transmitting parts.18



EN 13463-1:2001 (E)313Verification and tests.1813.1General.1813.2Technical documentation.1813.3Tests.1813.3.1General.1813.3.2Mechanical tests.1813.3.3Measurement of the maximum surface temperature.2013.3.4Tests of non-metallic parts of the equipment relevant to the level of protection.2113.3.5Thermal schock test.2314Marking.2314.1General.2314.2Marking of equipment complying with this standard.2314.3Examples of the full marking (informative).2614.3.1Example showing an item of Group II, non-electrical equipment certified to this standard.2614.3.2Example showing an item of Group II, category 2 equipment.2614.4Further examples of the ignition protection marking only (informative).2614.4.1Example of equipment Group II, category 2 for gas ignition protection flameproof suitable forexplosion gas group IIB with a maximum surface temperature class T4.2614.4.2Example of equipment Group II, category 3 for gas explosive atmospheres, with a maximumsurface temperature class T4 without any type of ignition protection.2614.4.3Example for equipment Group II, category 2 for dust explosion atmospheres with ignitionprotection constructional safety and a maximum surface temperature 110 °C.2714.4.4Example for marking for gas and dust atmospheres.2714.4.5Example for marking of equipment having two categories e.g. for different parts of theequipment.2715Information for use.27Annex A (normative)
Methodology for confirming the category.28A.1Methodology for confirming the category of Equipment-group I.28A.1.1Category M1 Equipment.28A.1.2Category M2 Equipment.28A.2Methodology for confirming the Category of Equipment-group II.29A.2.1Category 1 Equipment.29A.2.2Category 2 Equipment.29A.2.3Category 3 Equipment.29Annex B (informative)
Ignition hazard assessment.30B.1Example of an ignition hazard assessment for the non-electrical part of a solenoid valve.30B.2Example of an ignition risk assessment document for a conveyor belt intended for use in apotentially explosive atmosphere.31B.2.1Intended usage of the equipment.31B.2.2Description of the equipment.31B.2.3Assessment.31Annex C (normative)
Charging tests with non conductive materials.36C.1Introduction.36C.2Principle of the test.36C.3Samples and apparatus.36C.4Procedure.37C.4.1Conditioning.37C.4.2Determination of the most efficient charging method.37Annex D (informative)
Example of rig for resistance to impact test.40Annex ZA (informative)
Clauses of this European Standard addressing essential requirements orother provisions of EU Directives.41Bibliography.43



EN 13463-1:2001 (E)4ForewordThis European Standard has been prepared by Technical Committee CEN/TC 305 "Potentially explosiveatmospheres - 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 orby endorsement, at the latest by May 2002, and conflicting national standards shall be withdrawn at the latest byMay 2002.This European Standard has been prepared under a mandate given to CEN by the European Commission and theEuropean 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 standard.Annexes A and C are normative.Annexes B and D are informative.This standard includes a Bibliography.According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and the United Kingdom.



EN 13463-1:2001 (E)51 ScopeThis European Standard specifies the basic method and requirements for design, construction, testing and marking ofnon-electrical equipment intended for use in potentially explosive atmospheres in air of gas, vapour, mist and dusts.This standard is valid for atmospheres having pressures ranging from 0,8 bar to 1,1 bar and temperatures rangingfrom –20 °C to + 60 °C. Such atmospheres can also exist inside the equipment. The external atmosphere can bedrawn inside the equipment by natural breathing produced as a result of fluctuations in the equipment’s internaloperating pressure, and/or temperature.This standard can also be helpful for the design, construction, testing and marking of equipment intended for use inatmospheres outside the validity range stated above, but in this case, the ignition risk assessment, ignitionprotection provided, additional testing (if necessary), manufacturer’s technical documentation and instructions tothe user, should clearly demonstrate and indicate the equipment’s suitability for the conditions it may encounter.NOTE 1This standard does not cover additional marking for equipment intended for use outside the scope of its validity suchas an oxygen enriched atmosphere.It specifies the requirements for the design and construction of equipment, intended for use in potentially explosiveatmospheres in conformity with all categories of Group I and II. This European Standard can be supplemented byEuropean Standards concerning the specific types of ignition protection currently in preparation:NOTE 2These standards are given below:prEN 13463-2: Non-electrical equipment for use in potentially explosive atmospheres– Protection by flow restricting enclosure (fr)prEN 13463- 3: Non-electrical equipment for use in potentially explosive atmospheres – Protection by flameproof enclosure (d)prEN 13463- 4: Non-electrical equipment for use in potentially explosive atmospheres– Protection by inherent safety (g )prEN 13463- 5: Non-electrical equipment for use in potentially explosive atmospheres– Protection by constructional safety (c)prEN 13463- 6:Non-electrical equipment for use in potentially explosive atmospheres– Protection by control of ignition sources (b)prEN 13463- 7: Non-electrical equipment for use in potentially explosive atmospheres– Protection by pressurisation (p)prEN 13463- 8: Non-electrical equipment for use in potentially explosive atmospheres– Protection by liquid immersion (k)EN 50303 Group I, category M1 equipment intended to remain functional in atmospheres endangered by firedamp and/or coaldust.NOTE 3Where it is impracticable to avoid all effective sources of ignition, explosion protection can also be achieved by e.g.inerting, suppression, venting or containment as described in EN 1127-1, for Group II equipment or for example by dilution,drainage, monitoring and shut-down as described in prEN 1127-2 for Group I equipment. Such explosion protection methodsare outside the scope of this standard.NOTE 4This European Standard specifies methods of controlling the risk of ignition of explosive atmospheres by equipment.These can not be sufficient for some types of powder handling equipment that create a dust cloud inside an enclosure duringnormal operation. In such cases one or more of the protective systems described in 6.5 of EN 1127-1:1997 should be adopted.The means adopted for limiting the effects of ignitions in mining systems are described in 6.5 of prEN 1127-2:2001. Equipmentprotected in this way is outside the scope of this standard.



EN 13463-1:2001 (E)6NOTE 5Directive 94/9/EC concerning equipment and protective systems intended for use in potentially explosive atmospherescan be applicable to the type of machine or equipment covered by this European Standard. The present standard is notintended to provide means of complying with the essential health and safety requirements of Directive 94/9/EC.2 Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 292-1:1991, Safety of machinery — Basic concepts, general principles for design — Part 1: Basic terminology,methodology.EN 1127-1:1997, Explosive atmospheres — Explosion prevention and protection — Part 1: Basic concepts andmethodology.prEN 1127-2:2001, Explosive atmospheres — Explosion prevention and protection — Part 2: Basic concepts andmethodology in mining.EN 50014:1997, Electrical apparatus for potentially explosive atmospheres — General requirements.EN 50102, Degrees of protection provided by enclosures for electrical equipment against external mechanicalimpacts (IK code).EN 50303, Group I, category M1 equipment intended to remain functional in atmospheres endangered by firedampand/or coal dust.3 Terms and definitionsFor the purposes of this European Standard, the following terms and definitions apply.NOTESome definitions given in prEN 13237-1 are repeated for clarity.3.1equipmentmachines, apparatus, fixed or mobile devices, control components and instrumentation thereof and detection orprevention systems which, separately or jointly are intended for the generation, transfer, storage, measurement,control and conversion of energy and/or the processing of material and which are capable of causing an explosionthrough their own potential sources of ignition [prEN 13237-1]NOTEIf equipment supplied to the user as a complete entity contains any interconnecting parts e.g. fastenings, pipes, etc.these form part of the equipment.3.2equipment category3.2.1equipment Group I category M 1equipment designed and, where necessary, equipped with additional special means of protection to be capable offunctioning in conformity with the operational parameters established by the manufacturer and ensuring a very highlevel of protectionEquipment of this category is intended for use in underground parts of mines as well as those parts of surfaceinstallations of such mines endangered by firedamp and/or combustible dust.



EN 13463-1:2001 (E)7Equipment of this category is required to remain functional even in the event of rare incidents relating to equipment,with an explosive atmosphere present, and is characterised by means of protection such that: either, in the event of failure of one means of protection, at least an independent second means provides therequisite level of protection, or the requisite level of protection is assured in the event of two faults occurring independently of each other[prEN 13237-1].3.2.2equipment Group I category M 2equipment designed to be capable of functioning in conformity with the operational parameters established by themanufacturer and ensuring a high level of protectionEquipment of this category is intended for use in underground parts of mines as well as those parts of surfaceinstallations of such mines likely to be endangered by firedamp and/or combustible dust.This equipment is intended to be de-energised in the presence of an explosive atmosphere.The means of protection relating to equipment in this category assure the requisite level of protection during normaloperation and also in the case of more severe operating conditions, in particular, those arising from rough handlingand changing environmental conditions [prEN 13237-1].3.2.3equipment Group II category 1equipment designed to be capable of functioning in conformity with the operational parameters established by themanufacturer and ensuring a very high level of protectionEquipment in this category is intended for use in areas in which explosive atmospheres caused by mixtures of air andgases, vapours or mists or by air/dusts mixtures are present continuously, for long periods or frequently.Equipment of this category shall ensure the requisite level of protection, even in the event of rare malfunctions relatingto equipment, and is characterised by means of protection such that: either, in the event of failure of one means of protection, at least an independent second means provides therequisite level of protection, or the requisite level of protection is assured in the event of two faults occurring independently of each other.[prEN 13237-1].3.2.4equipment Group II category 2equipment designed to be capable of functioning in conformity with the operational parameters established by themanufacturer and ensuring a high level of protectionEquipment in this category is intended for use in areas in which explosive atmospheres caused by mixtures of air andgases, vapours or mists or by air/dusts mixtures are likely to occur.The means of protection relating to equipment in this category shall ensure the requisite level of protection, even inthe event of frequently occurring disturbances or equipment faults which normally have to be taken into account.[prEN 13237-1].3.2.5equipment Group II category 3equipment designed to be capable of functioning in conformity with the operational parameters established by themanufacturer and ensuring a normal level of protectionEquipment in this category is intended for use in areas in which explosive atmospheres caused by mixtures of air andgases, vapours or mists or by air/dusts mixtures are unlikely to occur or, if they do occur, are likely to do so onlyinfrequently and for a short period only.



EN 13463-1:2001 (E)8Equipment of this category ensures the requisite level of protection during normal operation. [prEN 13237-1].3.3normal operationsituation when the equipment, protective systems, and components perform their intended use within their designparameters (see also 5.2.2 of EN 292:1991)Minor release of flammable material may be part of normal operation. For example, releases of substances from sealswhich rely on wetting by the fluid which is being pumped are considered to be minor releases.Failures (such as a breakdown of pump seals, flange gaskets or releases of substances caused by accidents) whichinvolve repair or shut-down are not considered to be part of normal operation [prEN 13237-1].3.4malfunctionequipment, protective systems and components do not perform the intended function(see also 5.2.2.b of EN 292-1:1991).NOTEFor the purposes of this standard this can happen due to a variety of reasons, including variation of a property or of a dimension of the processed material or of the workpiece; failure of one (or more) of the component parts of the equipment, protective systems and components; external disturbances (e.g. shocks, vibration, electromagnetic fields); design error or deficiency (e.g. software errors); disturbance of
the power supply or other services; loss of control by the operator (especially for hand-held machines) [3.25
of EN 1127-1:1997].3.4.1expected malfunctiondisturbances or equipment faults which normally occur in practice3.4.2rare malfunctiontype of malfunction which is known to happen but only in rare instances. Two independent foreseeable malfunctionswhich, separately, would not create an ignition hazard but which, in combination, do create an ignition hazard, areregarded as a single rare malfunction3.5maximum surface temperaturehighest temperature attained in service as determined in 13.3.3 under the most adverse operating conditions (butwithin the recognised tolerance) by any part or surface of equipment, protective system or component which canproduce an ignition of the surrounding explosive atmosphereNOTE 1The relevant surface temperature can be internal or external depending upon the type of ignition protectionconcerned.NOTE 2In order to avoid ignition it follows that the maximum surface temperature should be lower than the ignitiontemperature of the explosive atmosphere (see EN 1127-1).NOTE 3On the aspects of dust layers and their ignition see EN 50281-1-2 [prEN 13237-1].3.6type of ignition protectiontypes of protection listed in the scope



EN 13463-1:2001 (E)93.7non-electrical equipmentequipment which can achieve its intended function without the use of electrical energy3.8potential ignition sourceany ignition source which may occur in the e
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