SIST EN 13463-8:2003
(Main)Non-electrical equipment for potentially explosive atmospheres - Part 8: Protection by liquid immersion 'k'
Non-electrical equipment for potentially explosive atmospheres - Part 8: Protection by liquid immersion 'k'
1.1 This European Standard specifies the requirements for the design, construction, testing and marking of ignition protected equipment using liquid immersion 'k' as a means of preventing potential ignition sources from becoming effective according to the category, or categories, of the equipment to which it is constructed.
1.2 It may be used to provide ignition protection, either as an independent means, in addition to, or in combination with, other types of ignition protection listed in prEN 13463-1 for Group I, categories M1 and M2 and Group II, categories 1G, 1D, 2G, 2D, 3G and 3D equipment, according to the ignition hazard assessment.
1.3 This European Standard supplements the requirements of prEN 13463-1 insofar as it applies to the protection of non-electrical equipment by liquid immersion 'k'.
1.4 This European Standard does not apply to the ignition protection of electrical equipment. For these requirements reference shall be made to EN 50014 and EN 50015, which inter-alia, requires electrically non-conducting protective liquids to be used.
Nicht-elektrische Geräte für den Einsatz in explosionsgefährdeten Bereichen - Teil 8: Schutz durch Flüssigkeitskapselung 'k'
1.1 Diese Europäische Norm legt die Anforderungen an Konstruktion, Bau, Prüfung und Kennzeichnung von Geräten mit der Zündschutzart Flüssigkeitskapselung ,k' als Maßnahme gegen das Wirksamwerden von potenziellen Zündquellen entsprechend der Kategorie oder den Kategorien des Geräts fest, für die es gebaut ist.
1.2 Sie kann verwendet werden, um einen Zündschutz entweder als unabhängige Maßnahme zusätzlich zu oder in Kombination mit anderen Zündschutzarten nach EN 13463-1 für Geräte der Gruppe I der Kategorien M1 und M2 und der Gruppe II, Kategorien 1G, 1D, 2G, 2D, 3G und 3D entsprechend der Bewertung der Zündgefahr vorzusehen.
1.3 Diese Europäische Norm ergänzt die Anforderungen von EN 13463-1 insofern, als sie für den Schutz durch Flüssigkeitskapselung ,k' von nicht-elektrischen Geräten gilt.
1.4 Diese Europäische Norm gilt nicht für den Zündschutz von elektrischen Geräten. Für diese Anforderungen sollte auf EN 50014 und EN 50015 verwiesen werden, die unter anderem den Einsatz nichtleitender Schutzflüssigkeiten fordern.
Appareils non électriques destinés a etre utilisés en atmospheres explosibles - Partie 8: Protection par immersion dans un liquide 'k'
1.1 La présente Norme européenne spécifie les exigences de conception, de construction, d'essai et de marquage des appareils protégés contre l'inflammation par immersion dans un liquide 'k', utilisé comme moyen pour empecher les sources potentielles d'inflammation de devenir actives conformément a la catégorie ou aux catégories d'appareil selon laquelle/lesquelles il est construit.
1.2 Ce moyen peut etre utilisé pour procurer une protection contre l'inflammation soit indépendamment, soit en complément ou en combinaison avec d'autres modes de protection contre l'inflammation énumérés dans l'EN 13463-1 pour les appareils du groupe I, catégories M1 et M2, et du groupe II, catégories 1G, 1D, 2G, 2D, 3G et 3D, conformément a l'évaluation du risque d'inflammation.
1.3 La présente Norme européenne complete les exigences de l'EN 13463-1 en ce sens qu'elle s'applique a la protection des appareils non électriques par immersion dans un liquide 'k'.
1.4 La présente Norme européenne ne s'applique pas a la protection contre l'inflammation des appareils électriques. Pour ces exigences, il convient de se référer a l'EN 50014 et a l'EN 50015 qui requierent, entre autres, l'utilisation de liquides de protection non conducteurs de l'électricité.
Neelektrična oprema za potencialno eksplozivne atmosfere – 8. del: Zaščita s potopitvijo v tekočino “k”
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Non-electrical equipment for potentially explosive atmospheres - Part 8: Protection by liquid immersion 'k'Appareils non électriques destinés a etre utilisés en atmospheres explosibles - Partie 8: Protection par immersion dans un liquide 'k'Nicht-elektrische Geräte für den Einsatz in explosionsgefährdeten Bereichen - Teil 8: Schutz durch Flüssigkeitskapselung 'k'13.230Varstvo pred eksplozijoExplosion protectionICS:SIST EN 13463-8:2003enTa slovenski standard je istoveten z:EN 13463-8:200301-december-2003SIST EN 13463-8:2003SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13463-8September 2003ICS 13.230English versionNon-electrical equipment for potentially explosive atmospheres -Part 8: Protection by liquid immersion 'k'Appareils non électriques destinés à être utilisés enatmosphères explosibles - Partie 8: Protection parimmersion dans un liquide 'k'Nicht-elektrische Geräte für den Einsatz inexplosionsgefährdeten Bereichen - Teil 8: Schutz durchFlüssigkeitskapselung 'k'This European Standard was approved by CEN on 1 August 2003.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,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13463-8:2003 E
EN 13463-8:2003 (E)2ContentspageForeword.3Introduction.41Scope.52Normative references.53Terms and definitions.54Determination of suitability.65Determination of the maximum/minimum criteria.66Protective liquid.67Equipment construction.78Type tests and requirements for enclosures.88.1General.88.2Increased pressure test on enclosed equipment having a sealed enclosure that containsstatic, or flowing protective liquid.88.3Overpressure test on enclosed equipment having a vented enclosure.89Documentation and instructions.89.1General.89.2Technical documentation conforming to the requirements of directive 94/9/EC.910Marking.9Annex ZA (informative)
Clauses of this European Standard addressing essential requirements or otherprovisions of EU Directives.10Bibliography.15
EN 13463-8:2003 (E)3ForewordThis document (EN 13463-8:2003) 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 March 2004, and conflicting national standards shall be withdrawn at the latest byMarch 2004.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree 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.This standard is to specify the requirements for the type of protection "Liquid immersion" for equipment intended foruse in potentially explosive atmospheres and should be used in conjunction with EN 13463-1 " Non-electricalequipment for potentially explosive atmospheres - Part 1: Basic method and requirements”.The detailed drafting work was entrusted to Working Group 2 "Equipment for use in potentially explosiveatmospheres".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, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.
EN 13463-8:2003 (E)4IntroductionCertain types of non-electrical equipment, intended for use in potentially explosive atmospheres of gas, vapourand/or dust, have their potential ignition sources rendered ineffective by either submersing them in a protectiveliquid, or by continuously coating them with a flowing film of protective liquid. In some equipment, the protectiveliquid is provided solely for the purpose of preventing the potential ignition sources from becoming effective. Inother equipment, the protective liquid serves additional purposes, such as lubricating and/or cooling moving parts,or as in the case of hydraulic systems, for transmitting energy. In some equipment, the protective liquid may be theactual process liquid itself.Examples of the kinds of equipment utilising this type of ignition protection are:a) oil immersed disc brakes, for example, on the wheels of vehicles used in potentially explosive atmospheres,b) diaphragm and other submersible pumps used for delivering flammable liquids, having their
movingmechanisms immersed below the lowest allowable level of the flammable liquid being processed (e.g.petroleum product dispensers),c) hydraulic pumps and motors having their internal rotating parts continuously immersed in the flowing hydraulicfluid used to transmit the hydrostatic or hydrokinetic energy,d) oil filled gearboxes, having their gear wheels partially immersed, but continuously coated by a viscous film oflubricating oil. In this example the protective oil coating may be supplied by natural splashing of the wheels asthey rotate in the oil, or by directing a continuously flowing stream of oil directly onto them from an oil pump inthe gearbox sump,e) fluid couplings, torque converters, connected for example, between the output shaft of a driving motor and theinput shaft of fully loaded machine, to allow it to be started gradually (‘soft starting’).In all of the above, ignition protection is achieved by the fact that protective liquid prevents the surroundingexplosive atmosphere from coming into contact with the ignition source(s) by continuously coating, and/orlubricating and cooling the moving parts.A similar type of ignition protection, known as oil immersion ”o”, has been used for many years for electricalequipment, where, in addition to the above, the liquid also acts as an electrical insulating medium. It is for this latterreason that this standard cannot be applied to electrical equipment, because it allows the use of liquids thatconduct electricity.
EN 13463-8:2003 (E)51 Scope1.1This European Standard specifies the requirements for the design, construction, testing and marking ofignition protected equipment using liquid immersion ‘k’ as a means of preventing potential ignition sources frombecoming effective according to the category, or categories, of the equipment to which it is constructed.1.2It may be used to provide ignition protection, either as an independent means, in addition to, or incombination with, other types of ignition protection listed in EN 13463-1 for Group I, categories M1 and M2 andGroup II, categories 1G, 1D, 2G, 2D, 3G and 3D equipment, according to the ignition hazard assessment.1.3This European Standard supplements the requirements of EN 13463-1 insofar as it applies to the protectionof non-electrical equipment by liquid immersion ‘k’.1.4This European Standard does not apply to the ignition protection of electrical equipment. For theserequirements reference should be made to EN 50014 and EN 50015, which inter-alia, requires electrically non-conducting protective liquids to be used.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 13463-1:2001, Non-electrical equipment for potentially explosive atmospheres Part 1: Basic method andrequirements.EN 60529, Degree of protection provided by enclosures (IP code) (IEC 60529:1989.)3 Terms and definitionsFor the purposes of this European Standard, the terms and definitions given in EN 13463-1 and the following apply.3.1liquid immersion 'k'a type of protection in which potential ignition sources are made ineffective or separated from the explosiveatmosphere by either totally immersing them in a protective liquid, or by partially immersing and continuouslycoating their active surfaces with a protective liquid in such a way that an explosive atmosphere which may beabove the liquid, or outside the equipment enclosure cannot be ignited.3.2protective liquida liquid which prevents the explosive atmosphere from making direct contact with potential ignition sources andthereby ensures it cannot be ignited.3.3equipment with a sealed enclosuretotally enclosed equipment that prevents the ingress of an external atmosphere during the expansion andcontraction of the internally contained protective liquid during use in service. Such equipment includes anypipework associated with it and may contain an over pressure relief device.3.4equipment with a vented enclosuretotally enclosed equipment that allows the ingress and egress of an external atmosphere through a breathingdevice or constricted opening during the expansion and contraction of the internally contained protective fluidduring normal operation. Such equipment includes any pipework associated with it.
EN 13463-8:2003 (E)63.5open equipmentequipment that has its components or is itself immersed in a protective liquid that is open to the externalatmosphere. For example, an open top vessel with immersed moving components. Such equipment includes anypipework associated with it.4 Determination of suitability4.1Before a decision is made to protect equipment or parts of equipment for use as an assembly, includinginterconnecting parts, by the measures described in this standard, it shall have been subjected to the ignitionhazard assessment in accordance with 5.2 of EN 13463-1:2001.4.2The requirements specified in EN 13463-1 shall be complied with except where specifically excluded by thisstandard.5 Determination of the maximum/minimum criteria5.1The manufacturer of the equipment shall determine by calculation and/or by type testing the followingmaximum/minimum criteria: the maximum and minimum level, or if more appropriate, the maximum and minimum pressure or flow of theprotective liquid; the maximum working angle to the horizontal of the equipment; the maximum and minimum viscosity of the protective liquid, unless the nature of the protective liquid isspecified by the manufacturer;required to ensure that the designated potential ignition sources, are either totally immersed, or continuouslycoated with sufficient protective liquid, to ensure they cannot become effective. Account shall be taken of theeffects of contraction during starting surges, splashing, turbulence, churning of the liquid, the worst case fillingcondition and standstill of the equipment throughout the normal range of operating temperatures.5.2Where the ignition protection is achieved by partial immersion and a pumped, or directed flow of liquidprovides the necessary continuous coating on the potential ignition sources, the manufacturer shall determine themost effective location of any nozzle, spray or coating device to give maximum protection.5.3The results of the calculation, or type tests, described above, shall be included in the manufacturer’stechnical documentation; the minimum/maximum criteria shall be given in the operating instructions given to theuser required by EN 13463-1.6 Protective liquidThe protective liquid used shall be of such viscosity and chemical composition that it: prevents the potentially explosive atmosphere from coming into direct contact with the potential ignitionsource(s) identified in the ignition hazard assessment by providing a continuous coating, or film on thepotential ignition source(s), and does not itself produce an explosive atmosphere on any of the potential ignition source(s). This includes voids,bubbles or mists caused by the churning action of moving parts in service, and/or a chemical reaction betweenthe protective liquid and the materials used in the equipment’s construction.NOTEThis does not preclude the use of flammable liquids as to protective liquid. does not itself produce an ignition source (e. g. production of deposits prone to self heating).
EN 13463-8:2003 (E)77 Equipment construction7.1The equipment shall be con
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