EN 13463-6:2005

Non-electrical equipment for use in potentially explosive atmospheres - Part 6: Protection by control of ignition source 'b'

This EN specifies a type of protection for non-electrical equipment which can be applied to equipment of categories 2 and 1. By means of mechanical or electrical operating control or monitoring devices, effective ignition sources are avoided. The standard covers the basic requirements for the design and the concept of application of this type of protection.

Nicht-elektrische Geräte für den Einsatz in explosionsgefährdeten Bereichen - Teil 6: Schutz durch Zündquellenüberwachung 'b'

In diesem Dokument werden die Anforderungen an die Konstruktion und den Bau von Geräten für den Einsatz in explosionsgefährdeten Bereichen festgelegt, die durch die Schutzart Zündquellenüberwachung "b" geschützt sind.
Dieses Dokument ist eine Ergänzung zu den in EN 13463 1 gegebenen Anforderungen, 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:
-   Gerätegruppe I, Kategorie M2 - Geräte, die keine durch schwere Betriebsbedingungen, besonders durch raue Handhabung und wechselnde Umgebungsbedingungen in Bergwerken, hervorgerufene Zündquelle enthalten;
-   Gerätegruppe II, Kategorie 3 - Geräte, die im Normalbetrieb keine Zündquelle enthalten;
-   Gerätegruppe II, Kategorie 2G oder 2D - Geräte, die keine durch vorhersehbare Störungen entstehende Zündquelle enthalten;
-   Gerätegruppe II, Kategorie 1G oder 1D - Geräte, die bei Normalbetrieb, vorhersehbaren Störungen oder seltenen Störungen keine Zündquelle enthalten.
ANMERKUNG   Die Anforderungen an Geräte der Gruppe I, Kategorie M1, sind in der Norm EN 50303 enthalten, die die Anforderungen sowohl für elektrische als auch für nicht elektrische Geräte festlegt.
Diese Schutzart kann angewendet werden, um Geräte der Kategorie 3 herzustellen, die andernfalls eine Zündquelle im Normalbetrieb hätten; d. h. nicht mit EN 13463-1 übereinstimmen würden.
Die in der Norm 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, 2 und 3 zu erfüllen, abhängig vom Ergebnis der nach EN 13463 1 ausgeführten Zündgefahrenbewertung.

Appareils non électriques destinés à être utilisés en atmosphères explosibles - Partie 6: Protection par contrôle de la source d'inflammation 'b'

Le présent document spécifie les exigences relatives à la conception et à la fabrication des appareils destinés à être utilisés dans des atmosphères explosibles, protégés par le mode de protection : Contrôle de la source d'inflammation "b".
Il complète les exigences de l'EN 13463 1 dont le contenu s'applique également en totalité aux appareils construits conformément au présent document.
Les appareils conformes aux articles correspondants du présent document répondent aux exigences des catégories suivantes :
-   appareils de la catégorie M2 du groupe I - qui ne contiennent pas de source d'inflammation provenant de conditions l'exploitation contraignantes, en particulier de manipulations brutales et de conditions ambiantes variables dans les mines ;
-   appareils de la catégorie 3 du groupe II - qui ne contiennent pas de source d'inflammation lors d'un fonctionnement normal ;
-   appareils des catégories 2G ou 2D du groupe II - qui ne contiennent pas de source d'inflammation pouvant résulter de dysfonctionnements prévisibles ;
-   appareils de la catégorie 1G ou 1D du groupe II - qui ne contiennent pas de source d'inflammation lors d'un fonctionnement normal ou dans les cas de dysfonctionnements prévisibles ou dans des cas de dysfonctionnements rares.
NOTE   Les exigences relatives aux appareils de la catégorie M1 du groupe I sont données dans l'EN 50303 qui définit les exigences correspondant aux appareils électriques et non électriques.
Ce mode de protection peut être utilisé pour produire des appareils de la catégorie 3 qui, autrement, contiendraient une source d'inflammation lors d'un fonctionnement normal, c'est-à-dire qui ne peuvent pas être conformes à l'EN 13463-1.
Le mode de protection contre l'inflammation décrit dans la norme peut être 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, 2 et 3 du groupe II en fonction de l'

Neelektrična oprema za uporabo v potencialno eksplozivnih atmosferah - 6. del: Zaščita s kontrolo virov vžiga "b"

General Information

• Status: Withdrawn
• Publication Date: 19-Apr-2005
• Withdrawal Date: 05-Apr-2016
• ICS: 13.230 - Explosion protection
• Technical Committee: CEN/TC 305 - Potentially explosive atmospheres - Explosion prevention and protection
• Drafting Committee: CEN/TC 305/WG 2 - Equipment for use in potentially explosive atmospheres (provisional title)
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Completion Date: 06-Apr-2016
• Directive: 2014/34/EU - Directive 2014/34/EU Of The European Parliament And Of The Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to equipment and protective systems intended for use in potentially explosive atmospheres (recast)
• Directive: 94/9/EC - Directive 94/9/EC of the European Parliament and the Council of 23 March 1994 on the approximation of the laws of the Member States concerning equipment and protective systems intended for use in potentially explosive atmospheres
• Mandate: M/BC/CEN/92/46 - Standardization mandate assigned to CEN/CENELEC concerning equipment and protective systems intended for use in potentially explosive atmospheres
• Ref Project: SIST EN 13463-6:2005 - Non-electrical equipment for use in potentially explosive atmospheres - Part 6: Protection by control of ignition source 'b'

Relations

• Replaced By: EN ISO 80079-37:2016 - Explosive atmospheres - Part 37: Non-electrical equipment for explosive atmospheres - Non-electrical type of protection constructional safety ''c'', control of ignition sources ''b'', liquid immersion ''k'' (ISO 80079-37:2016)
• Effective Date: 13-Apr-2016

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 6: Protection by control of ignition source 'b'Appareils non électriques destinés a etre utilisés en atmospheres explosibles - Partie 6: Protection par contrôle de la source d'inflammation 'b'Nicht-elektrische Geräte für den Einsatz in explosionsgefährdeten Bereichen - Teil 6: Schutz durch Zündquellenüberwachung 'b'13.230Varstvo pred eksplozijoExplosion protectionICS:SIST EN 13463-6:2005enTa slovenski standard je istoveten z:EN 13463-6:200501-julij-2005SIST EN 13463-6:2005SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13463-6April 2005ICS 13.230English versionNon-electrical equipment for use in potentially explosiveatmospheres - Part 6: Protection by control of ignition source 'b'Appareils non électriques destinés à être utilisés enatmosphères explosibles - Partie 6: Protection par contrôlede la source d'inflammation 'b'Nicht-elektrische Geräte für den Einsatz inexplosionsgefährdeten Bereichen - Teil 6: Schutz durchZündquellenüberwachung 'b'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 13463-6:2005: E

Flow diagram of the procedures described in this document.13 Annex B (informative)
Thought process used to assign IPLs to different categories of equipment.14 Annex C (informative)
Background information on EN 954-1 and EN 61508.15 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 94/9/EC.16 Bibliography.21

An example of this is a fan, having high speed rotating blades fixed to a shaft, supported on rolling element bearings, inside a stator. In normal operation, no frictional ignition sources should be present. However, because the clearances between the rotor and stator are very small, malfunctions such as the collapse of a shaft bearing, distortion of a rotating blade, build up of foreign material on a rotating blade, etc. could cause the clearance to be reduced and frictional sparking, or hot surfaces, to occur.
To prevent potential ignition sources from becoming effective during normal operation, malfunction and rare malfunction, it is possible to incorporate sensors into the equipment to detect impending dangerous conditions and initiate control measures at an early stage of deterioration before the potential sources are converted into effective sources. The control measures applied, may be initiated automatically, via direct connections between the sensors and the ignition prevention system, or manually, by providing a warning to the equipment operator (With the intention of the operator applying the ignition prevention measures e.g. by stopping the equipment). In this document, the incorporation of such sensors and their associated automatic/manual ignition prevention measures, to prevent potential ignition sources becoming effective ignition sources, is known as protection by “Control of ignition source ‘b’ ” This type of ignition protection, and the devices used to achieve it, can take many forms. In practice, they may be mechanical, electrical, optical, visual or a combination of all of these. Although this document deals with the ignition protection of non-electrical equipment, it nevertheless has to take account of the fact that an increasing amount of non-electrical equipment makes use of electrical sensors to detect and initiate the ignition prevention measures. It is therefore impossible to produce a non-electrical equipment protection standard without making reference to the use of electrical sensors and their associated ignition prevention system circuits. Some examples of mechanical sensor / actuator devices are: a) fuseable plugs (as used in fluid couplings), that melt to release the energy contained in the power transmission fluid before the temperature of ignition capable parts exceed allowable limits; b) centrifugal speed governors, that directly control the power throttle and prevent rotating parts attaining frictional ignition capable rotational speeds; c) thermostatic valves, that close to reduce the input energy, or open to increase the amount of coolant, thereby preventing ignition capable temperatures being attained; d) pressure relief valves (using springs or weights), that open to limit pressure levels and consequent temperature rise during gas compression. Alternatively, to protect against catastrophic failure leading to the exposure of unintended hot surfaces. Some examples of combined electro-mechanical sensor / actuator devices are: e) temperature, flow and level monitoring/control devices, that detect temperature / flow / level and initiate a solenoid valve to reduce the input energy, or increase the amount of coolant, f) optical pulse counters, that sense abnormal rotational speeds on the teeth of gears and send signals to a speed controller, g) vibration sensors, that detect abnormal vibration, from e.g. rolling element bearings, before they fail (usually indicated by high frequency vibrations), or rotating parts that are becoming out of dynamic balance (usually indicated by low frequency vibrations),

Such sensor / actuator control devices may be either, continuously active in normal operation of the equipment (e.g. to control the temperature of category 3 equipment), or be arranged so that they only detect abnormal operation (e.g. to detect impending dangerous over-temperature in category 2 equipment).
As malfunction of any of the above sensors / actuator control devices, may result in failure to apply the appropriate ignition prevention measure, they are critical to the ignition safety related parts of the equipment. This ignition protection standard therefore calls for them to be assessed and suggests a minimum quality for such devices in the form of an ignition prevention level (IPL) that the equipment manufacturer must attempt to achieve.
Thus, to meet the requirements of this document, the non-electrical equipment manufacturer is required to perform both the ignition hazard assessment (required by EN 13463-1), and additionally, an evaluation, to determine the ignition prevention level (IPL) necessary to ensure that the sensors / ignition prevention system function when they are called upon to contain the ignition risk within tolerable limits. A flow diagram is provided at Annex A (Figure A.1) to assist the non-electrical equipment manufacturer follow the procedural stages described in this document.

1 Scope This document specifies the requirements for the design and construction of equipment, intended for use in potentially explosive atmospheres, protected by the type of protection: Control of ignition source "b". This document supplements the requirements in EN 13463-1, the contents of which also apply in full to equipment constructed in accordance with this document. Equipment conforming with the relevant clauses of this document meet 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 in mines;  Equipment Group II category 3 – that does not contain an ignition source in normal operation;  Equipment Group II category 2G or 2D – that does not contain an ignition source arising as a result of foreseeable malfunctions;  Equipment Group II category 1G or 1D – that does not contain an ignition source in normal operation, or under foreseeable malfunctions, or under rare malfunctions. 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 type of protection can be used to produce category 3 equipment which otherwise would have an ignition source in normal operation, i.e. it is not able to conform with EN 13463-1 The type of ignition protection described in the standard 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 category M2, or Group II categories 1, 2 and 3 depending on the ignition hazard assessment in EN 13463-1.
This document does not apply to:
 control devices which are not intended to provide ignition protection;  the ignition protection of electrical equipment;  equipment shut down systems, initiated by flammable gas detectors, explosive atmosphere detectors, carbon monoxide, fire, or smoke detectors. NOTE This is because this document deals only with the detection and control of impending ignition sources in equipment, not the detection of explosive atmospheres surrounding it. Ignition protection systems conforming to the relevant clauses of this docu
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