SIST EN 13463-3:2005
(Main)Non-electrical equipment for use in potentially explosive atmospheres - Part 3: Protection by flameproof enclosure 'd'
Non-electrical equipment for use in potentially explosive atmospheres - Part 3: Protection by flameproof enclosure 'd'
This EN contains requirements for the construction and testing of equipment with type of protection flameproof enclosure, intended for use in potentially explosive atmospheres.
Nicht-elektrische Geräte für den Einsatz in explosionsgefährdeten Bereichen - Teil 3: Schutz durch druckfeste Kapselung 'd'
Dieses Dokument legt die Anforderungen an Konstruktion, Bewertung, Bau und Prüfung von Geräten fest, die für den Einsatz in explosionsgefährdeten Gas oder Staubatmosphären bestimmt sind und die durch die Schutzart Druckfeste Kapselung "d" geschützt sind.
Dieses Dokument ist ergänzt die Anforderungen nach EN 13463 1, deren gesamter Inhalt ebenfalls auf Geräte zutrifft, die nach dem vorliegenden Dokument gebaut wurden. Geräte, die mit den entsprechenden Abschnitten dieses Dokuments übereinstimmen, erfüllen die Anforderungen der folgenden Kategorien:
3 Gerätegruppe I, Kategorie M2 - Geräte, die keine durch schwere Betriebsbedingungen, besonders durch raue Handhabung und wechselnde Umgebungsbedingungen, hervorgerufene Zündquelle enthalten,
3 Gerätegruppe II, Kategorie 2G oder 2D - Geräte, die keine durch vorhersehbare Störung entstehende Zündquelle enthalten.
Die in diesem Dokument beschriebene Zündschutzart kann entweder für sich genommen oder zusammen mit anderen Zündschutzarten angewendet werden, um die Anforderungen an Geräte der Gruppe I, Kategorie M2 oder der Gruppe II, Kategorien 1 und 2, abhängig von der Zündgefahrenbewertung nach EN 13463-1 zu erfüllen.
ANMERKUNG Die Anforderungen an Geräte der Gruppe I, Kategorie M1, sind in EN 50303 enthalten, die die Anforderungen sowohl für elektrische als auch für nicht elektrische Geräte festlegt.
Dieses Dokument darf auf Grund der Schwierigkeiten hinsichtlich der Prüfung und Festlegung der Anforderungen nicht bei Geräten angewendet werden, die für die Verwendung in Schwefelstaub und organischen Peroxiden bestimmt sind.
Dieses Dokument gilt nicht für den Zündschutz von elektrischen Geräten bzw. Hubkolben-Verbrennungsmotoren. Für diese Anforderungen muss auf EN 60079-0 und EN 60079-1 für elektrische Geräte und EN 1834-1, -2 und -3 für Hubkolben-Verbrennungsmotoren verwiesen werden.
Appareils non électriques destinés a etre utilisés en atmospheres explosibles - Partie 3 : protection par enveloppe antidéflagrante 'd'
Le présent document spécifie les exigences relatives a la conception, a l'évaluation, a la fabrication et aux essais
des appareils destinés a etre utilisés dans des atmospheres de gaz ou de poussieres explosibles et protégés par le
mode de protection appelé enveloppe antidéflagrante 'd'.
Il complete les exigences de l?EN 13463-1 dont le contenu s'applique aussi en totalité aux appareils fabriqués
conformément au présent document. Les appareils conformes aux articles correspondants du présent document
répondent aux exigences relatives aux catégories suivantes :
- appareils de la catégorie M2 du groupe I ? qui ne contiennent pas de source d'inflammation provenant de
conditions d'exploitation contraignantes, en particulier de manipulations brutales et de conditions ambiantes
variables ;
- appareils des catégories 2G ou 2D du groupe II ? qui ne contiennent pas de source d'inflammation pouvant
résulter de dysfonctionnements prévisibles.
Le mode de protection contre l'inflammation décrit dans ce document peut etre utilisé soit seul, soit en combinaison
avec d'autres modes de protection contre l'inflammation pour répondre aux exigences des appareils des catégories
M2 du groupe I ou des catégories 1 et 2 du groupe II en fonction de l'évaluation du risque d'inflammation selon
l?EN 13463-1.
NOTE Les exigences relatives aux appareils de la catégorie M1 du groupe I sont données dans EN 50303 qui spécifie les
exigences relatives aux appareils électriques et non électriques.
Le présent document ne doit pas etre appliqué dans le cas d?appareils destinés a etre utilisés dans les poussieres
de soufre et les peroxydes organiques en raison de la difficulté a réaliser des essais et a spécifier des exigences.
Neelektrična oprema za uporabo v potencialno eksplozivnih atmosferah - 3. del: Zaščita z neprodirnim okrovom "d"
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Non-electrical equipment for use in potentially explosive atmospheres - Part 3: Protection by flameproof enclosure 'd'Appareils non électriques destinés a etre utilisés en atmospheres explosibles - Partie 3 : protection par enveloppe antidéflagrante 'd'Nicht-elektrische Geräte für den Einsatz in explosionsgefährdeten Bereichen - Teil 3: Schutz durch druckfeste Kapselung 'd'13.230Varstvo pred eksplozijoExplosion protectionICS:SIST EN 13463-3:2005enTa slovenski standard je istoveten z:EN 13463-3:200501-julij-2005SIST EN 13463-3:2005SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13463-3April 2005ICS 13.230English versionNon-electrical equipment for use in potentially explosiveatmospheres - Part 3: Protection by flameproof enclosure 'd'Appareils non électriques destinés à être utilisés enatmosphères explosibles - Partie 3 : protection parenveloppe antidéflagrante 'd'Nicht-elektrische Geräte für den Einsatz inexplosionsgefährdeten Bereichen - Teil 3: Schutz durchdruckfeste Kapselung 'd'This European Standard was approved by CEN on 15 March 2005.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 Central Secretariat 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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2005 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13463-3:2005: E
EN 13463-3:2005 (E) 2 Contents Page Foreword.3 Introduction.4 1 Scope.5 2 Normative references.5 3 Terms and Definitions.5 4 Determination of suitability and general requirements.6 4.1 Determination of suitability.6 4.2 General requirements.6 5 Flameproof joints.6 6 Cemented joints.6 7 Operating rods.7 8 Supplementary requirements for shafts and bearings.7 9 Light transmitting parts.7 10 Breathing and draining devices which form part of a flameproof enclosure.7 11 Fasteners, associated holes and closing devices.7 12 Materials and mechanical strength of enclosures; materials inside the enclosure.7 13 Entries for flameproof enclosures.7 14 Verification and tests.8 15 Type tests.8 15.1 Type testing of flameproof non-electrical equipment for explosive gas or vapour/air mixtures.8 15.2 Type testing of non-electrical electrical equipment for explosive gas or vapour/air mixtures.8 16 Routine tests.9 17 Switchgear.9 18 Lampholders and lampcaps.9 19 Non-metallic enclosures and non-metallic parts of enclosures.9 20 Apparatus using capillaries.9 21 Instructions and documentation.9 21.1 User instructions.9 21.2 Technical documentation.9 22 Marking.10 Annex A (normative)
Additional requirements for crimped ribbon elements of breathing and draining devices.11 Annex B (normative)
Additional requirements for elements, with non-measurable paths, of breathing and draining devices.12 Annex C (normative)
Additional requirements for flameproof entries.13 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 94/9/EC.14 Bibliography.18
EN 13463-3:2005 (E) 3 Foreword This document (EN 13463-3:2005) has been prepared 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 October 2005, and conflicting national standards shall be withdrawn at the latest by October 2005. 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 94/4EC of 23 March 1994. For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This document is to specify the requirements for the type of protection “Protection by flameproof enclosure” for equipment intended for use in potentially explosive atmospheres and should be used in conjunction with EN 13463-1 "Non-electrical equipment for potentially explosive atmospheres – Basic method and requirements".
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EN 13463-3:2005 (E) 4 Introduction Some types of non-electrical equipment intended for use in potentially explosive atmospheres of gas, vapour, mist and/or combustible dust, contain effective ignition sources in normal operation and these have to be prevented from becoming an ignition source for the surrounding atmosphere in which they are used. One way of achieving this is to enclose the ignition sources so that an ignition of the atmosphere inside the enclosure is not transmitted to the outside atmosphere. This document describes one such way, known as protection by "Flameproof enclosure 'd'". The basic principle of ignition protection by the use of a flameproof enclosure, is that gases, or vapour, may enter the enclosure through the cover joints / flanges and if an explosive atmosphere inside the enclosure ignites, neither the enclosure will be deformed significantly, nor flame transmitted through the joints / flanges to the explosive atmosphere outside. For this reason the enclosure has to be both robust and have dimensionally controlled cover joints / flanges with maximum allowable safe gaps appropriate for the types of explosive gas / vapour likely to occur inside the equipment. Since its conception, protection by flameproof enclosure has been developed to allow many kinds of continuously sparking equipment to be used safely in places where a potentially explosive atmosphere exists. For electrical equipment, this type of protection is well known for protecting power arcing components and is defined and described in EN 60079-1. As the electrical equipment standard contains the generic testing, verification and marking requirements, unnecessary duplication of the requirements in this non-electrical equipment document is avoided by cross reference to the electrical standard. In this document, only those differences necessary for the purpose of providing protection for non-electrical equipment are written in full. In contrast to this document EN 60079-1 does not consider explosive atmospheres formed by dusts, except for Group I, category M2 electrical equipment, where its associated general requirements document, EN 60079-0, states that flameproof equipment designed, constructed and tested for use in explosive atmospheres of firedamp (explosive mine gas consisting mainly of methane) needs no alteration, or further testing to allow it to be used where a coal dust cloud is present. The concept of protecting equipment against dust cloud ignition by testing it in a gas / air mixture is also accepted in this document for both Group I, Category M2 mining equipment, and Group II, Category 2G and 2D non-mining equipment. This is because it introduces an acceptable safety factor against ignition and it allows a much more simple method of testing and verifying its explosion protection properties. Examples of non-electrical types of equipment that can be protected by flameproof enclosure are:
a) Equipment with potentially hot rubbing surfaces exceeding the ignition temperature of the atmosphere surrounding them, e.g. friction clutches and brake linings b) equipment that has to operate at high temperature to function correctly, such as catalytic converters in the exhaust systems of flameproof internal combustion engines, or hot catalytic pellistors used in the sensors of flammable gas measuring instruments, c) equipment producing incendive frictional sparks in normal operation. Little equipment is currently made to flameproof designs for dust applications, because alternative designs using dust tight enclosures are usually cheaper. There are however non-mining applications where both dust and gas are present, where this document may be applicable.
Where dust alone is present, there is usually no mechanism to create inside an enclosure an explosive dust cloud, although deposits of dust may form. The risk from a fire involving dust deposits inside the enclosure is not considered by this document, as it falls outside the concept of protection by flameproof enclosure.
EN 13463-3:2005 (E) 5 1 Scope This document specifies the requirements for the design, assessment, construction and testing of equipment intended for use in potentially explosive gas or dust atmospheres, protected by the type of protection: Flameproof enclosure "d". This document supplements the requirements in EN 13463-1, the contents of which also apply in full to equipment constructed to this document. Equipment complying with the relevant clauses of this document meets the requirements for the following categories: Equipment Group I Category M2 – that does not contain an ignition source arising from severe operating conditions, in particular arising from rough handling and changing environmental conditions; Equipment Group II Category 2G or 2D – that does not contain an ignition source arising as a result of foreseeable malfunctions. The type of ignition protection described in the document can be used either on its own or in combination with other types of ignition protection to meet the requirements for equipment of Group I categories M2, or Group II categories 1 and 2 depending on the ignition hazard assessment in EN 13463-1. NOTE The requirements for Group I Category M1 equipment are given in EN 50303, which specifies the requirements for both electrical and non-electrical equipment. This document shall not be used for equipment intended for use in sulphur dust and organic peroxides because of the difficulty of testing and specifying the requirements This document does not apply to the ignition protection of electrical equipment, or reciprocating internal combustion engines. For these requirements reference shall be made to EN 60079-0 and EN 60079-1 for electrical equipment and EN 1834-1, -2 and -3 for reciprocation internal combustion engines. 2 Normative references 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. EN 1127-1:1997, Explosive atmospheres — Explosion prevention and protection — Part 1: Basic concepts and methodology. EN 1127-2:2002, Explosive atmospheres — Explosion prevention and protection — Part 2: Basic concepts and methodology for mining. EN 13463-1:2001, Non-electrical equipment for potentially explosive atmospheres — Part 1: Basic method and requirements. EN 60079-0:2004, Electrical apparatus for explosive gas atmospheres — Part 0: General requirements. EN 60079-1:2004, Electrical apparatus for potentially explosive atmospheres — Part 1: Flameproof enclosure ‘d’. 3 Terms and Definitions For the purposes of this document, the terms and definitions given in EN 1127-1:1997, EN 1127-2:2002, EN 13463-1:2001, EN 60079-0:2004 and EN 60079-1:2004 and the following apply. 3.1 flameproof enclosure type of protection in which the parts which can ignite an explosive atmosphere are placed in an enclosure which can withstand the pressure developed during an internal explosion of an explosive mixture and which prevents the transmission of the explosion to the explosive atmosphere surrounding the enclosure. [EN 13237:2003]
EN 13463-3:2005 (E) 6 4 Determination of suitability and general requirements 4.1 Determination of suitability Before a decision is made to protect equipment, or pieces of equipment for use as an assembly, including interconnecting parts, by measures described in this document, it shall be subjected to the ignition hazard assessment in accordance with EN 13463-1. Furthermore, this assessment shall determine that protection by flameproof enclosure ‘d’ is appropriate for the type of potential ignition source in the equipment and capable of achieving the level of protection required by the Group and Category to which the equipment is to be constructed.
The equipment grouping and temperature classification defined in EN 13463-1 apply. The subdivisions of the gas Group IIA, IIB and IIC described in EN 60079-0 (which refer to equipment atmospheres of different gases or vapours) also apply to the requirements for Group II equipment in this document. 4.2 General requirements All references to EN 60079-0 in EN 60079-1 shall additionally be taken as a reference to EN 13463-1 and where conflict occurs, EN 13463-1 shall take precedence. 5 Flameproof joints Flameproof joints shall conform to EN 60079-1:2004, Clause 5 which includes tables of the required maximum gap for different gas groups. The following modifications shall apply hereby: a) In EN 60079-1:2004, Clause 5 reference to the word “electrical” shall be replaced by “non-electrical” and the word “apparatus” shall be replaced by “equipment”. b) EN 60079-1:2004, 5.1 shall be replaced by the following: “When tested in accordance with 15.1 (Ability of the enclosure to withstand the pressure of an internal explosion), the enclosure shall not suffer permanent deformation or damage, which reduces the level of ignition protection provided by the enclosure to an unsatisfactory level. That is, by either weakening the mechanical strength / robustness of the enclosure, or by enlarging the width of any flameproof joint." "When tested in accordance with 15.2 (Ability of the enclosure joints to prevent flame transmission), the enclosure shall not transmit an incendive flame through its flameproof joints.” All flameproof joints, whether permanently closed or designed to be opened from time to time, shall comply, in the absence of pressure, with the requirements of Clause 5.
NOTE The values given in Clause 5 constitute the necessary conditions. Additional measures can be necessary in order to pass the non-transmission test of 15.2. The surface of joints may be protected against corrosion Coating with paint is not permitted. Other coating material may be used if the material and application procedure have been shown not to adve
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