Guidelines Market Surveillance En

Procedural Guidelines for

Market Surveillance within the scope

of the 11th Ordinance on the Equipment and Product Safety

Act (GPSGV)

Information for Parties Involved in the Market Process

Procedural guidelines for market surveillance within the scope of the 11th GPSGV Version 05/2009

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Table of contents

Section Page 1 Purpose of the procedural guidelines ...................................................................................................... 3 2 Market surveillance within the scope of the 11th GPSGV.............................................................................. 3

2.1 Checks carried out on manufacturers/importers and traders ........................................................ 3 2.2 Reviewing catalogues including internet research.......................................................................... 3 2.3 Checks at the workplace................................................................................................................. 4 2.4 Checks at fairs and exhibitions..................................................................................................................4

3 Cooperation and exchange of experiences with parties involved in the market process............................5 4 Scope of Directive 94/9/EC ............................................................................................................................. 5

4.1 Equipment ........................................................................................................................................ 5 4.2 Components....................................................................................................................................................................6 4.3 Safety devices, controlling devices and regulating devices ................................................................. 7 4.4 Sub-assemblies ...................................................................................................................................... 7 4.5 Installations ............................................................................................................................................ 7 4.6 Protective systems.....................................................................................................................................................8

5 Content of checks ................................................................................................................................... 8 5.1 Checking the marking of products.............................................................................................................9 5.2 Declaration of conformity in accordance with Directive 94/9/EC .......................................................... 9 5.3 Instructions.................................................................................................................................... 10 5.4 Inspecting the implementation of the appropriate conformity assessment procedure ................. 11 5.5 Checking technical characteristics................................................................................................ 13 5.6 Special notes ............................................................................................................................................15

6 List of references........................................................................................................................................................16

Annexes

Annex 1 Marking of equipment for use in potentially explosive atmospheres in accordance with the 11th GPSGV in conjunction with Directive 94/9/EC

Annex 2 Standard-specific marking of equipment in Group II

Annex 3 Types of protection Annex 4 Application of § 4(5) 11th Ordinance on the Equipment and Product Safety Act (GPSGV) Annex 5 Placing electrical and steam tracing systems on the market

Annex 6 Declaration of conformity template Annex 7 List of notified bodies


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1 Purpose of the procedural guidelines These procedural guidelines are considered an aid for market surveillance within the scope of the Ordinance on Explosion Protection (11th GPSGV), in addition to the ‘Instructions for the implementation of market surveillance in Germany' (Committee of the Länder for Occupational Health and Safety Publication (LV) 36). They are based on the provisions and decisions made at European level by the Standing Committee for Directive 94/9/EC, the ATEC ADCO Group and the Market Surveillance Working Group, amongst others. They are also intended to flesh out the general concept of market surveillance in greater detail.

Key aspects of these procedural guidelines are thus the notes on the marking of products and on equipment placed combined on the market (sub-assemblies). 2 Market surveillance within the scope of the 11th GPSGV

For the implementation of market surveillance, see LV 36 [4]. Market surveillance should be carried out

especially for

� equipment, the design and manufacturing of which does not have to involve a conformity assessment body, and

� equipment which, given the location/purpose of operation, will presumably be used in explosive atmospheres, and this is not excluded by the operating instructions, but which is not placed on the market with the appropriate marking and declaration of conformity in accordance with Directive 94/9/EC.

2.1 Checks carried out on manufacturers/importers and traders

Checks should target in particular persons responsible for marketing the following products within the meaning of Directive 94/9/EC:

� wiring devices, electrical control gear,

� industry lamps,

� pumps, ventilators and compressors,

� valves with actuators,

� measuring equipment,

� lifting equipment, conveyers, industrial trucks,

� fixed or handheld machines for packaging and marking,

� machines for procedural operations (such as mixing, crushing and transporting organic and other flammable bulk material, and the bottling, mixing and storing of flammable liquids and gases),

� industrial communications and computer technology.

2.2 Reviewing catalogues including internet research

Opportunities to obtain information about offers of products are given via catalogues and in particular via the internet. Specific enquiries can be made here to suppliers regarding use in potentially explosive atmospheres (e.g. in respect of category and declaration of conformity in accordance with Directive 94/9/EC).

If discrepancies suggestive of non-compliance are found, samples may be taken according to § 8(8) of the Equipment and Product Safety Act (GPSG) and examined further.


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Appropriate search terms for ascertaining the persons responsible for marketing are, e.g.: ‘ATEX’,

‘ATEX version’,

‘flameproof’,

‘explosion-protected’, ‘explosion protected’, ‘explosion’ in connection with the designation of product groups (e.g. see 2.1) and individual products such as ‘switch’, ‘thermometer’, ‘elevator’, etc.

In order to limit the search, ‘Category 1’, ‘Category 2’, ‘Category 3’, or ‘Zone 0’, ‘Zone 1’, ‘Zone 2’, ‘Zone 20’, ‘Zone 21’, ‘Zone 22, can also be entered.

The search can be carried out directly through search engines or, alternatively, specifically in business directories.

Examples of business directories with ATEX products:

www.vdma-products.com www.chemietechnik.de

www.pro-4-pro.com

www.process.vogel.de

2.3 Checks at the workplace

Since a lot of equipment is not available on the market, but only delivered directly to customers according to individual orders, products can often only be found at the place of installation or use. Therefore, products already placed on the market and, where applicable, operating in connection with the official inspection/approval of a new or modified installation or audit service through the authority responsible for both the enforcement of the Ordinance on Industrial Safety and Health (BetrSichV) and the GPSG (normally factory inspections) are especially significant for market surveillance. In particular, explosion protection documents of the operator pursuant to § 6 BetrSichV should be able to provide information as to the extent to which certain equipment is used by the manufacturer specifically for use in potentially explosive atmospheres.

Note: Until 30.06.2003, the equipment and protective systems in accordance with the ordinance applicable until then, e.g. the ‘Ordinance on electrical equipment in potential explosive atmospheres’ (ElexV), could also still be placed on the market under § 7 of the 11th GPSGV.

There must be a clear differentiation in the complaints as to whether errors or omissions of the manufacturer or the person responsible for marketing exist in connection with Directive 94/9/EC or whether products properly placed on the market are not used as intended.

See the ‘Concept for enhancing cooperation between actors in the field of market surveillance and operating safety’.

2.4. Checks at fairs and exhibitions

It is recommended to regularly visit fairs, such as ACHEMA, where an informal participation of employees from market surveillance authorities from different federal states should be enabled by arrangement.

See the checklist for fair inspections of LV 36 [4].

3 Cooperation and exchange of experiences with parties involved in the market process Cooperation with test centres, associations, etc., directly involved in the market process, and cooperation with specialists in the field of explosion protection of authorities, as well as participation in events for exchanging experiences, are useful for high-quality market surveillance.


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Possible partners are, e.g.:

� higher federal authorities (Physikalisch-Technische Bundesanstalt (the national metrology institute providing scientific and technical services), Federal Institute for Materials Research and Training (BAM));

� conformity assessment bodies (see the Central Office of the Länder for Safety Engineering (ZLS) list →

Accredited Bodies);

� Experience Exchange Group EK 4 at ZLS;

� associations of manufacturers (e.g. German Engineering Federation (VDMA), German Electrical and Electronic Manufacturers’ Association (ZVEI));

� provider organisations (e.g. NAMUR (an international user association of automation technology in process industries), Federation of German Chemical Industry (VCI));

� standards organisations (Association for Electrical, Electronic and Information Technologies (VDE), German Institute for Standardisation (DIN) and the German Commission for Electrical, Electronic and Information Technologies of DIN and VDE (DKE)).

The aim is to organise an annual exchange of experiences on the subject of explosion protection. Topic suggestions should be made by market surveillance authorities and parties involved in the market process to the Market Surveillance Working Group (AAMÜ) or representatives for directives.

4 Scope of Directive 94/9/EC Several basic criteria are listed and explained below as an aid for classifying equipment, protective systems as well as safety devices, controlling devices or regulating devices relating to the scope of Directive 94/9/EC. More detailed information is contained in the guidelines [5].

4.1 Equipment

Directive 94/9/EC, Article 1(3)(a) : ‘Equipment’ means machines, apparatus, fixed or mobile devices, control components and instrumentation thereof and detection or prevention systems which, separately or jointly, are intended for the generation, transfer, storage, measurement, control and conversion of energy for the processing of material and which are capable of causing an explosion through their own potential sources of ignition.

Conditions:

used as intended in potentially explosive atmospheres (Article 1(1) Directive 94/9/EC):

� places with atmospheric conditions 0.8 to 1.1 bar; -20 to 60 °C) ([5] No. 4.1.1),

� presence of a potentially explosive atmosphere of flammable substances in the form of gases, vapours, mists or dusts and air,

� potential ignition source of the equipment comes into contact with the potentially explosive atmosphere;

own potential ignition source (does not apply if the ignition source is solely the result of the process operation, e.g. the flow-through from electrostatic rechargeable pipes, components through which hot material passes).

Conditions which do not lead to classification as equipment within the meaning of Directive 94/9/EC:

a potentially explosive atmosphere can only exist inside equipment if there is no connection to another potentially explosive atmosphere (e.g. apparatus or analysis instruments closed off from the process environment and ambient air) (see [5] No. 3.7.1);

products wherein the potentially explosive atmosphere is ignited in accordance with its intended purpose (e.g. in the cylinder of a combustion engine);

‘simple equipment' which is used in intrinsically safe circuits and in accordance with EN 50020 have no potential ignition source and are thus not covered by Directive 94/9/EC.

EN 50020:2002: electrical component or combination of components in a simple design with clearly defined electrical parameters which does (do) not affect the intrinsic safety of the circuit in which it (they) should be used;


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‘simple non-electrical products’, the ignition hazard assessment of which, e.g. in accordance with EN 13463- 1:2009, shows that they do not feature any potential ignition source of their own.

Examples from the limit range of Directive 94/9/EC:

Within the scope of 94/9/EC * Outside the scope of 94/9/EC *

Computer *** Wristwatches (electrical/not electrical) **

Mobile phones, walkie-talkies *** Manual valves, pumps, lifting equipment ** hand-operated valves (e.g.: ball valve)

Cameras (with battery) Cameras (purely mechanical, no battery) **

Lasers Mechanical doors and windows **

Electrical heating cables *** Hearing aids

Mechanical brakes/gears *** Thermocouples (PT 100)

Hand tools (e.g. hammer, pincers, spanners, saws) **

Single ladders **

Pressure release valves **

Electrical handlamps ***

Containers * In individual cases, a different classification may be required depending on the ignition hazard assessment of the

manufacturer.

** See ATEX Guidelines, Section 5.2.1 [5].

*** See Borderline List (http://ec.europa.eu/enterprise/atex/guide/borderlineatex.pdf).

4.2 Components

Directive 94/9/EC Article 1(3)(c): 'Components' means any item essential to the safe functioning of equipment and protective systems but with no autonomous function.

Examples for products (components) which fall within and outside the scope of 94/9/EC:

Within the scope of 94/9/EC * Outside the scope of 94/9/EC *

Terminals Cables

Probe sub-assemblies Cable bridges

Relays Pipes for cable routing

Empty flameproof enclosures Cable lugs/eyes

Ballasts for fluorescent lamps

Pressurised container with extinguishing powder as part of an explosion compression system

Conveyor belt for a conveyor system

Non-autonomous protective systems

Suction hoses for vacuum cleaners

Magnetic locks for, e.g. cabinet doors

Borderline List (http://ec.europa.eu/enterprise/atex/guide/borderline atex.pdf)

Components do not receive CE marking. They are also covered by the conformity assessment procedure to be applied to equipment. The manufacturer shall display a certificate of conformity.


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Notes: The suitability of products for general technical purposes (e.g. bearings, shaft seals and diodes) which are used for the manufacturing of equipment or protective systems shall be verified within the scope of the conformity assessment of the equipment or protective system in which these products are integrated.

In some cases a decision as to whether it constitutes equipment or a component within the meaning of Directive 94/9/EC is not easy to make. A decisive criterion for market surveillance authorities is therefore the handling of products in the EC declaration of conformity and, where applicable, in the EC-type-examination certificate of the notified body (‘U’ certificate → component, ‘X’ certificate → equipment for which special conditions of use shall be considered).

4.3 Safety devices, controlling devices and regulating devices

Safety devices, controlling devices and regulating devices intended for use outside potentially explosive atmospheres are also covered by the scope of Directive 94/9/EC if they are required for or contribute to the safe functioning of equipment

and protective systems with respect to the risk of ignition or of uncontrolled explosion. (→ Article 1(2) Directive 94/9/EC)

Safety devices, controlling devices and regulating devices intended for use outside potentially explosive atmospheres are not classified in categories but with an indication in brackets of the category for which the products are intended.

Safety devices, controlling devices and regulating devices intended for use in potentially explosive atmospheres are also considered as equipment.

Examples:

� overload protective devices for electrical motors of the Ex e ‘increased safety’ protection category;

� devices for maintaining adequate pressure for a hydraulically operated safety system;

� control units with valuators for, e.g. temperature, pressure, which are used for controlling equipment.

4.4 Sub-assemblies

It follows from the term 'jointly’ in the definition of equipment in the Directive that a sub-assembly consisting of two or more sub-assemblies, if necessary together with components, shall be considered as a product which lies within the scope of Directive 94/9/EC provided this sub-assembly is placed on the market and/or put into operation by someone responsible (who is then the manufacturer of the sub-assembly) as a single functional unit. [5] No. 3.7.5

For ‘sub-assemblies’, the following cases can be distinguished when placed on the market:

� inseparable unit in terms of the concept of explosion protection (e.g. canned motor pump);

� separable unit (sub-assemblies are individually assessed for conformity but since a new ignition source is formed during the assembly the conformity is reassessed in this regard for sub-assemblies whereby the type of the new ignition source (electrical or non-electrical) determines the conformity assessment procedure);

� sub-assemblies assessed for conformity independently, the assembling of which does not form a new ignition source (optionally placed on the market as a single piece of equipment or sub-assembly).

Note: If manufacturers assemble incompletely certified equipment (components, 'U' marking → Annex 2) into equipment then they shall carry out the relevant conformity assessment procedure for the end product.

4.5 Installations

An installation is defined as the combination of one or more already compliant pieces of equipment with installation material (e.g. cable, screws) on the premises of the user ([5] No. 5.2.2). Installations are covered by the scope of BetrSichV (in conjunction with Directive 1999/92/EC).


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4.6 Protective systems

Directive 94/9/EC Article 1(3)(b): 'Protective systems' means design units which are intended to halt incipient explosions immediately and/or to limit the effective range of explosion flames and explosion pressures. Protective systems may be integrated into equipment or separately placed on the market for use as autonomous systems.

Examples: flame arresters, explosion relief venting systems, explosion suppression systems, fire barriers

Notes: If a protective system is placed on the market as part of a product which is itself not covered by Directive 94/9/EC then as an autonomous protective system it must nevertheless be subject to the conformity assessment in accordance with Directive 94/9/EC.

If a protective system is placed on the market as part of ATEX equipment then it is subject to the conformity assessment together with the equipment and is not considered as an autonomous protective system.

5 Content of checks

Market surveillance initially checks whether Directive 94/9/EC is formally applied correctly. For this purpose, it is necessary to obtain the relevant documents.

The following documents may come into consideration:

� EC declaration of conformity,

� instructions,

� certificates as final documents of the conformity assessment modules,

Annex Certificate (German) Certificate (English)

III EG-Baumusterprüfbescheinigung EC-Type-Examination Certificate

IV Mitteilung über die Anerkennung des Quali- tätssicherungssystems/ Produktion

Production Quality Assessment Notifica-tion

V Konformitätsbescheinigung für die Prüfung des Produktes

Certificate of Conformity for Product Verification

VI Mitteilung über die Konformität mit der Bau- art

Conformity to Type Notification

VII Mitteilung über die Anerkennung des Quali- tätssicherungssystems/ Produkt

Product Quality Assessment Notification

VIII - keine Zertifizierung vorgesehen - - no certification provided -

IX Konformitätsbescheinigung für Einzelprüfung Certificate of Conformity for Unit Verifi-cation

� confirmation of receipt for the filing of technical documentation at a notified body,

� ignition hazard assessment report for doubts regarding the safety equipment,

� where applicable, measurement and test records (establishment of T category, explosion group).


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5.1 Checking the marking of products

Equipment and protective systems must be legibly and indelibly marked (Directive 94/9/EC Annex II No. 1.0.5 as well as in the basic standards, e.g. DIN EN 13 463-1 No. 14.1).

The requirements for the marking in accordance with Directive 94/9/EC are in Annex 1, listed under the currently valid standards in Annexes 2 and 3 of these procedural guidelines.

Common faults are:

� marking not in accordance with European Law (see Annex 1),

� inconsistent marking,

� sub-assemblies are not labelled as such,

� all used types of protection are stated for sub-assemblies and not only those relevant for the installation, set-up and operation,

� affixing of the marking of the sub-assembly and the directly interconnected individual unit belonging to this sub-assembly where it is not identifiable which marking belongs where,

� a differentiation between different protected parts (e.g. internally and externally) is not made,

� marking of a product (e.g. refrigerator) as explosion-proof equipment which is not intended for setting up in a potentially explosive atmosphere but potentially explosive atmospheres may only occur inside),

� marking is not permanent or identifiable, e.g. sticker from plastic film,

� missing indication of the notified body which is involved in the production control phase.

Application of other directives

a) If other directives shall apply to a product in accordance with Directive 94/9/EC (as a whole), this shall also be provided (e.g. on the name-plate) with the four required markings.

The following are possible, e.g.:

� (Machinery Directive 2006/42/EC),

� (Lifts Directive 95/16/EC),

� Pressure Equipment Directive 97/23/EC (except for pressure equipment under Article

3(3)),

� Directive on electromagnetic compatibility,

� Directive on construction products, e.g. for pressure relief devices in building works (e.g. 'explosion flap’ in the silo).

b) If parts of products in accordance with Directive 94/9/EC (mostly within sub-assemblies) are subject to other directives, these parts must bear separate markings (e.g. a separate name-plate and in general also a separate CE marking).

In addition to the above-mentioned directives (excluding the Lifts Directive), the following are possible:

� electrical equipment in accordance with the Low Voltage Directive 2006/95/EC (included in the ‘non-

explosive atmosphere’),

� simple pressure vessels in accordance with 87/404/EEC.

c) If products in accordance with Directive 94/9/EC are themselves only components of a product in accordance with another directive, these must be provided with complete marking in accordance with Directive 94/9/EC.

5.2 Declaration of conformity in accordance with Directive 94/9/EC

In accordance with § 4(1) of the 11th GPSGV, a declaration of conformity referred to in Annex X Letter B of Directive 94/9/EC shall be attached to the equipment or protective system. This must be written in the official language of the country in which the product is used [Blue Guide, Section 5.4 [13]].


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Content of the EC declaration of conformity referred to in Annex X of Directive 94/9/EC:

� the name or identification mark and the address of the manufacturer or his authorised representative established within the Community;

� a description of the product;

� all relevant provisions fulfilled by the product;

� where appropriate, the name, identification number and address of the notified body and the number of the EC-type-examination certificate;

� where appropriate, reference to the harmonised standards;

� used (relevant) standards and technical specifications;

� where appropriate, references to other Community Directives which have been applied;

� identification of the signatory.

Note: The repetition of the marking in accordance with 94/9/EC in the declaration of conformity is not required by the directive itself. Application of other directives (see also Point 5.1) a) In the event that products in accordance with Directive 94/9/EC (as a whole) are also subject to

successive directives, they must likewise be specified in the declaration of conformity, or declarations of conformity relating to the corresponding directive must be available.

b) If parts of products in accordance with Directive 94/9/EC (mostly within sub-assemblies) are subject to other directives then they must be specified in the declaration of conformity.

c) If products in accordance with Directive 94/9/EC are only themselves components of a product in accordance with another directive (e.g. a machine or pressure equipment), then Directive 94/9/EC shall be mentioned in its declaration of conformity too.

A VDMA (German Machinery and Plant Manufacturers Association) declaration of conformity template is set out in Annex 6.

5.3 Instructions

In accordance with § 4(1) of the 11th GPSGV, the equipment or protective system shall be accompanied by instructions pursuant to Annex II No. 1.0.6. of Directive 94/9/EC. When placing products on the market in Germany, the rules intended to guarantee health and safety during use, addition or maintenance must be written in German (§ 4(4)(2) GPSG).

The following particulars at least must be included in the instructions pursuant to in Annex II No. 1.0.6. of Directive 94/9/EC:

a recapitulation of the information with which the equipment or protective system is marked, except for the serial number (see 1.0.5.), together with any appropriate additional information to facilitate maintenance (e.g. address of the importer, repairer, etc.);

instructions for safe:

� putting into service,

� use,

� assembling and dismantling,

� maintenance (servicing and emergency repair),

� installation,

� ad jus tment ;

where necessary, an indication of the danger areas in front of pressure-relief devices;

where necessary, training instructions;

details which allow a decision to be taken beyond any doubt as to whether an item of equipment in a specific category or a protective system can be used safely in the intended area under the expected operating conditions;

electrical and pressure parameters, maximum surface temperatures and other limit values.


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5.4 Inspecting the implementation of the appropriate conformity assessment procedure

If the conformity assessment procedure is required, which provides for the inclusion of a notified body (see Image 1), then conformity of the equipment with the EC-type-examination-certificate and conditions as well as, in some cases, the timeliness of the documents on which production control is based should be checked.

Equipment Group II

Production quality

assurance (Annex IV)

Notified body

controls: product-specific QA system for

manufacturing, final inspection and

testing EN 29002

EC-type-examination procedure (Annex III)

for Zone 0 or 20

Product verfication

(Annex V) Notified body

controls: conformity

of each individual product

with the type

Declaration of conformity

EC-type-examination procedure (Annex III)

Electrical equipment,combustion engines

Product quality

assurance

(Annex VII) Notified body

controls: QA system for

final inspection and testing EN 29003

Category 2

Conformity to type

(Annex VI)

Notified body

controls:

product testing

by the

manufacturer

Internal control of

production (Annex VIII)

no control by a notified body

Category 3

Declaration of conformity

CE marking

EC declaration of conformity of the manufacturer (or representative)

EC unit verifi-cation (Annex

IX)

for Zone 1 or 21 for Zone 2 or 22

Category 1

Other non-electrical equipment

EC-type-examination procedure

EC-type-examination procedure

Image 1 Overview of the conformity assessment procedure


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Quality management If the modules in accordance with Annex IV 'Production quality assistance' or Annex VII ‘Product quality assurance’ are used in the conformity assessment procedure, a specific additional audit for Directive 94/9/EC must take place for any existing general QM system. The procedure is illustrated in Image 2.

Approval of the QA

system for Directive 94/9/EC

by the notified body

General QM certificate

available in accordance with

DIN EN ISO 900x

An

auditor

is involved in the QA system certification

(Annex IV and Annex VII Point 3.3)

Image 2 Procedure for QA system certification

The ‘ auditor’ is an expert in explosion protection for certain types of protection or product groups and has received training on assessing associated QA systems.

An 'additional explosion audit’ is mainly carried out based on an existing general QM system certificate (generally in accordance with DIN EN 13 980) as per the left side of Image 2. This procedure has proved its value, partly due to the combination of special competencies of QM specialists and explosion experts.

The manufacturer receives a notification with a formal layout standardised by the Explosion Notified Body Group regarding the directive-specific approval of the QA system.

It is especially important to note the information on product groups.

The manufacturer is responsible for ensuring that all manufactured products are covered by the QA notification(s).

The approval is limited to three years. Timeliness shall therefore be ensured for checks.

The manufacturer of Category 2 non-electrical equipment and Category 3 equipment must have an internal control of production in accordance with Annex VIII of Directive 94/9/EC.

Additional audit

for product-specific

and/or directive-specific

aspects


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EC-type-examination certificate It is not permitted for Category 2 non-electrical equipment and Category 3 equipment to display an EC-type-examination certificate. The conformity assessment procedure in accordance with either Annex VIII or Annex IX shall be applied for this equipment. Often in these cases, a type-examination certificate is issued by a conformity assessment body which is the same in terms of content as the EC-type-examination certificate. The certification marking of this (voluntary) type-examination certificate must not be affixed to the equipment.

5.5 Checking technical characteristics

In addition to the formal fulfilment of marking and documentation obligations, certain characteristics may be checked or the manufacturer may be challenged upon initial suspicion. This concerns, e.g. for Category 3 characteristics � equipment which has no effective ignition source during trouble-free operation – e.g. checking the relevant standards have been observed and the maximum attainable surface temperature under intended operating conditions conforms to the established operating limits.

Examples: junction boxes, distribution boxes, plug and socket outlets

Electrical equipment Junction box and distribution box housings

robust construction

tongue and groove sealing system

carefully inserted sealing

opening only possible with tools

openings for cables closed with cable glands or sealing plugs

area limits in plastic housings II C

Built-in components of junction boxes and distribution boxes

only terminals

terminals are securely fixed in junction boxes and screwed or cast in distribution boxes

openings for cables closed with cable glands or sealing plugs

correct cable connection

Plug and socket outlets locked plug operation, operation only possible when dead

Lamps robust housings

design shatter-proof or with guard if a mechanical hazard exists

Clearance and creepage distances Category 2

U < 250 V, Material Group I: ≥ 5 mm (EN 60079-7)

Clearance and creepage distances Category 3

U < 250 V, Material Group I: ≥ 3.2 mm (EN 60079-15)


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Examples: Agitators, motors

Category 1 agitators

Agitators with radial or axial shaft seal Required zone separation through:

Sealing between Category 1 and Category 2, (not compulsory in accordance

with Directive 94/4/EC), subsequent ventilation lamp with natural ventilation (height of the lamp at least 1/10 of the flange diameter, but at least 10 mm or

demonstration of the function), sealing before bearing (Category 2) of the shaft, or sealing between Category 1 and Category 2, superimposition of a lock space with

a locking medium including the monitoring and ventilation of the bearings in Zone 1, or

sealing between Category 1 and Category 2, superimposition of the bearing cartridge with a locking medium and monitoring (also the prevention of the transport of sparks in Zone 0 by spark-guards in rare incidents).

Prevention of ignition hazards

Hot surfaces: measurement of the temperature to determine the temperature class under unfavourable circumstances. consideration of installation errors and insufficient lubrication. Temperature measurement until steady conditions (increase in temperature < 2 K/h), measuring points: seals, bearings, environment.

Impact friction sparks: design with safety > 3, proof by calculation of compliance with minimum distances between stationary and moving parts (also dynamic and in rare incidents). where applicable, auxiliary bearings or emergency and safety bearings required in Zone 1.

Electrostatic charge: affects all non-metallic components, as well as unearthed, isolated metallic components of the agitator’s seal. These are, e.g. bellows, elastomer seals, radial or axial shaft seals, cover seals, flat seals. Suitability can be demonstrated by the presence of

electrostatic conductivity as a material property, or by the impossibility of charge through the installation situation (e.g. O-rings within a metal enclosure). Strong charge generating processes must be taken into account where necessary. Another possibility is to comply with Table 1 a and 1 b of TRBS 2153.

Agitators with Required zone separation through: rotary seal sealing before bearing of the shaft by means of a double-acting rotary seal with a

locking medium (gas or liquid) and, if required, in conjunction with temperature

monitoring (directly or indirectly) and another parameter for protection against rare incidents (parameters: pressure of the locking medium,

flow rate, liquid level in the storage container).

Prevention of ignition hazards

Hot surfaces: measurement of the temperature to determine the temperature class in unfavourable circumstances until steady conditions (increase < 2 K/h).

Alternatively: temperature limited with an IPL 1 monitoring device in accordance with EN 13462-6. Measuring points: where possible – seals, bearings, locking medium, environment.

Impact and friction sparks: design with safety > 3, proof by calculation of the minimum distances between stationary and moving parts. Where applicable,

auxiliary bearings or emergency and safety bearings in Zone 1. Use of another monitoring device to halt continuous operation in the error condition.

Electrostatic charge: a dangerous electrostatic discharge because of components is not to be expected. Strong charge generating processes, e.g. stirring, mixing, filling and emptying of liquids of lower conductivity in enamel containers due to operation must be taken into account where necessary.


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Motors

Electrical Regardless of their protection type (‘e’, ‘d’, ‘de’, ‘nA’ or ‘tD’), electrical machines overload protection must be protected against overloading by one of the two following overload

protection devices:

a) MR – a current-dependent, time-delayed protection device for the monitoring of all three phases, set no higher than the rated current of the machine which must respond at 1.2 x the input current within 2 hours and must not respond for 1.05 x the input current within 2 hours, or

b) TMS – direct monitoring of the temperature by means of embedded temperature sensors.

a) MR protection device

For ‘MR’ devices, all types of protection (‘e’, ‘d’, ‘de’, ‘nA’ or ‘tD’) shall be considered: • The protection device must correspond to EN 60947 and its function must be

checked and marked by anotifiedbody with 'II (2) G D’. ‘(2)’ means: relay is positioned in the safe area; its protective function works in Category 2

(Zone 1) pursuant to Directive 94/9/EC Article 1(2) and ATEX Guidelines 11.2.1 [5].

b) TMS protective device as sole protection

Since the temperature sensor is embedded in the end winding, it is only representative of the copper temperature and the directly associated heat conducting surface temperature of the stator housing but not for the rotor temperature. Apart from the relatively small ‘stator-critical’ motors of protection type ‘e’, this protective device can be used only for the types of protection for which the surface temperature of the housing is definitive for the explosion protection: these are the ‘d’ and ’tD’ types of protection.

Operation at the

Motors of protection type ‘e’, together with the convertor as a unit, must be subject to an examination. This must be an EC-type-examination by a notified

electronic frequency converter

body (EN 60079-14, Section 11.2.4)For the ‘e’ type of protection . Note: The converter and motor can also be examined for the ‘e’ type of protection separately if this is expressly approved in the EC-type-examination certificate.

For motors of protection ‘nA’ the successful test is confirmed by the manufacturer in a declaration of conformity (EN 50021/EN 60079-15 Section

10.9.2).

5.6 Special notes

Placing products with a ‘non-flameproof design’ on the market If products (e.g. mills, mixers, dryers, filling equipment, agitators), which are predicted to also be used in potentially explosive atmospheres (e.g. in the foodstuff industry, paint and varnish manufacturing), are offered without means for protection, it should be checked how compliance with legal requirements is ensured in terms of placing on the market, especially for mass-produced products.

Application of § 4(5) of the 11th GPSGV (custom-made products) See the decision of the AAMÜ at its 14th meeting under TOP 4.4. (see Annex 4).

Placing electrical and steam tracing systems on the market

See the decision of the AAMÜ at its 14th meeting under TOP 4.4. (see Annex 5).


- 16 -

6 List of references

[1] Equipment and Product Safety Act (GPSG) of 06.02.2004 (BGBI. I. p. 2, p. 141), last amended on 07.07.2005 (BGBl. I p. 1970)

[2] Ordinance on Explosion Protection (11th GPSGV) of 12.12.1996 (BGBl. I p. 1914), last amended on 06.01.2004 (BGBl. I p. 2)

[3] Explosion Protection Directive 94/9/EC of 23.03.1994 (OJ EC L 100, p. 1), last revised in 2000 by Corrigendum 2 (OJ EC L 304 p. 19) http://ec.europa.eu/enterprise/atex/direct/newapproach.htm

[4] Instructions for the implementation of market surveillance in Germany (LV 36; www.lasi.osha.de → LASI-Veröffentlichungen)

[5] Guidelines on the application of Directive 94/9/EC; 2nd issue July 2005, 08/2008 (German version, translation funded by the German Machinery and Plant Manufacturers Association (VDMA), the Central Electric and Electronics Association (ZVEI) and BG Chemie (www.zvei.de, www.vdma.de; BG Chemie Prävention Explosionsschutz))

[6] Protocols of the Standing Committee and the ADCO Group on Directive 94/9/EC

[7] Considerations by the ATEX Standing Committee (http://ec.europa.eu/enterprise/atex/guide/index.htm )

[8] Clarification Sheets of the ATEX Notified Bodies Group (ExNBG) (http://ec.europa.eu/enterprise/atex/nb/sheets.htm)

[9] Directory of harmonised standards (OJ EC C 306 p.2 of 15.12.2006, http://ec.europa.eu/enterprise/atex/stand.htm)

[10] Guide on Directive 97/23/EC http://ec.europa.eu/enterprise/pressureequipment/ped/guidelines/indexde.html

[11] Decisions of the Market Surveillance Working Group (AAMÜ)

[12] Concept for enhancing cooperation between actors in the field of market surveillance and operating safety http://www.baua.de/nn79968/de/Geraete-und-Produktsicherheit/Marktueberwachung/pdf/KonzeptZusammenarbeit.pdf?

[13] Guides to the Implementation of Directives Based on New Approach and Global Approach (‘Blue Guide’) http://ec.europa.eu/enterprise/newapproach/legislation/guide/index.htm


II 2 G II 2 D

II 2 G EEx ed IIC T4 [Company] GmbH, 99999 X city, Y street 1 2009 [type, serial no]

Annex 1

Marking of equipment for use in potentially explosive atmospheres in accordance with the 11th GPSGV in connection with Directive 94/9/EC

Marking Comment

Name and address of manufacturer

Postal address (internet or email addresses are not sufficient). [94/9/EC Annex II No. 1.0.5]

marking Minimum dimension of 5 mm (this may be waived for very small products) clearly visible, legible and indelible.

[94/9/EC Article 10, Annex X Section A]

Components may not be provided with the CE-marking (unless required by another directive, e.g. the EMC Directive).

[94/9/EC Article 8(3)]

Reference number of the notified body

Affixing after the CE-marking (.)

Affixing only if a notified body is involved in the production control phase.

For components, where applicable, the affixing of the reference number only.

[94/9/EC Article 10]

Designation of series + type

Serial number Optional (but shall be given in accordance with, e.g. DIN EN 60079-1).

Construction year

Markings

[94/9/EC Annex II No. 1.0.5]

Group I - Use in underground parts of mines and in surface installations of mines which may be endangered by firedamp and/or combustible dust.

II - Use in other potentially explosive atmospheres. [ATEX Guidelines No. 11.2.1; 94/9/EC Annex II No. 1.0.5; Article 1(3)]

Category M1 or M2 – for Group I

1, 2 or 3 – for Group II [94/9/EC - Annex I]

Examples of uses in different zones:

II 1/2 G use partly in Zone 0, partly in Zone 1 (e.g. agitators),

II 2/- D ventilator outside explosive atmosphere, encourages Zone 21 atmosphere,

II -/3 D ventilator in Zone 22 of ‘non-explosive atmosphere’, II 1/2/3/- G filling pump with gas recovery system and non-explosive dispenser head. ( ) – The above information in brackets is for safety devices, controlling devices and regulating devices within the meaning of Article 1(2) Directive 94/9/EC for use outside potentially explosive atmospheres: information as to which category of equipment they come under.

Type of potentially explosive atmosphere

Only for Group II:

G – for the risk of explosion through gases, vapours, mists,

D – for the disk of explosion through combustible dusts.

In order to avoid misunderstandings regarding markings (‘GD' or ‘G/D’ could also be understood as hybrid mixture), the following notation should be used: [94/9/EC Annex II No. 1.0.5]

Example:

Minimum marking for very small products:

CE-marking, marking, name or trademark of manufacturer

The entire marking must be present in the documentation.


Annex 2

Standard-specific marking of Group II equipment

Explosive gas atmospheres: standards of EN 60079 series, (alt: EN 50014 et seq.), EN 13463*

Explosive dust atmospheres: standards of EN 61241 series, (alt: EN 50281-1-1), EN 13463* * non-electrical equipment

Marking Comments

EEx ..............................................

or

Ex .................................................

or

no marking with EEx or Ex ............

For electrical equipment which corresponds to the standards of EN 50014 et seq. series. For electrical equipment which corresponds to the standards of EN 60079 et seq. or EN 61241 series.

For equipment which has been manufactured in accordance with Directive 94/9/EC but not in accordance with a harmonised standard.

For safety devices, controlling devices and regulating devices outside potentially explosive atmospheres which are required for the safe operation of equipment and protective systems in potentially explosive atmospheres.

For non-electrical equipment in accordance with the EN 13463 series of standards.

Protection type

Any type of protection in [ ] ...

See Annex 3

For sub-assemblies, the marking of the relevant types of protection is carried out for the installation and set-up.

For safety devices, controlling devices and regulating devices outside potentially explosive atmospheres which are required for the safe operation of equipment and protective systems in potentially explosive atmospheres. (E.g.: limiter Ex II (2) GD [Ex e] for monitoring heating circuits).

Explosion group For equipment for explosive gas atmospheres only:

I – for Explosion Group I,

II – for Explosion Group II, or

IIA, IIB, IIC – for Group II for d, i, nC and nL types of protection.

Only for equipment for explosive gas atmospheres:

T1 T2 T3 T4 T5 T6 Tx

> 450 < 300 < 200 < 135 <100 < 85 °C Information in the °C °C °C °C °C instructions

Temperature class

or

maximum surface temperature or

no marking .......................................

e.g.: T80°C [also combination for interim values, e.g. 350°C (T1)]

if the temperature is dependent not on the equipment but on, e.g. the circulating medium.

Additional information where applicable:

X ..............................................

U ..............................................

. . . ° C ≤ T a ≤ . . . ° C . . . .

Special conditions of use observed → instructions

Components, i.e. not operation alone – no CE marking.

Conformity is only certified with the installation in complete equipment.

Equipment which is suitable for a range other than the standard range (-20°C ≤ Ta ≤ +40°C).

Certification markings of the form:

AAAA 07 ATEX 9999 X

If a type-examination certificate has been issued, i.e. required for: � electrical equipment and Category 1 and 2 combustion engines, � other non-electrical Category 1 equipment.

X = optional if the equipment is subject to specific conditions (see ‘additional information’).

Reference no. of the technical documentation

Only for non-electrical Category 2 equipment (except combustion engines).

Minimum marking for small products: – protection type,

– name or mark of the certification body,

– certificate reference number,

– ’X’ or ‘U’ symbol, if necessary.

The entire marking must be present in the documentation.

For extremely small sub-assemblies, the marking can be made on a label directly at the on-site installation.

Characteristics:

Equipment which has contact with two different zones (e.g. installation in a partition)

Example of marking Explanatory notes

II 1/2 G EEx ia/d IIC Suitable for installation in Zone 0 (protection type ‘ia’), suitable except for Zone 1 (protection type ‘d’), in each case for explosion group IIC.

Equipment for use outside potentially explosive atmospheres which assures protective measures in potentially explosive atmospheres


II (2) G [EEx p] Monitoring equipment for pressurised enclosures for use outside the potentially explosive atmosphere p.

II (2) G [EEx e] Overload protective device for an electrical motor for use outside the potentially explosive atmosphere.

Equipment for use in potentially explosive atmospheres which assures protective measures in potentially explosive atmospheres


II 2 GD EEx d [e] IIB T4 Overload protective device for an electrical motor in a housing with a flameproof enclosure (d) for use in Zone 1.


Annex 3

Types of protection

Electrical equipment for use in gas, vapours or dust

Type of protection [EN 50014 or EN 60079-0]

Description of protective measure Category(ies) Typical applications

Flameproof enclosures

[EN 60079-1; EN 50018]

d 1

Explosion-proof design

The transmission of flames to the outside environment is prevented.

Maximum gap dimensions are

determined

The maximum surface temperature is

limited

Subdivision in ‘d IIA’, ‘d IIB’, ‘d IIC’ corresponding to the explosion group of the potentially explosive mixture

II 2 G

II 3 G

controls, switch gears, control gears, rheostats display units

motors / lamps (often in connection with. ‘e’ wiring

compartments transformers

heating equipment

Increased safety [EN 60079-7; EN 50019]

e 1

No sparks or arcs during normal operation

Clearance and creepage distances are

determined

The maximum surface temperature is

limited

Maximum component temperatures are

limited

Special requirement for windings (conductor

cross-section, insulation property, impact

strength)

II 2 G

II 3 G

terminal and junction boxes

control boxes for installing explosion-protected components (which have a different type of protection)

squirrel-cage motors, transformers

lamps (often in connection with ‘d’)

installation material

inductive ballasts switches, measuring equipment

Intrinsic safety [EN 60079-11; EN 50020]

ia

ib

ic

Sparks allowed during normal operation

Live working possible

Current and voltage are limited

Internal and external inductance and capacity are limited

The maximum surface temperature is limited

Maximum component temperatures are limited

Category 1 equipment possible

II 1 G*

II 2 G**

II 3 G

* only ia

** ia/ib

measuring and control technology

communications technology

sensors

actuators

connection/terminal boxes

handportables

battery handheld lamps

Encapsu- lation [EN 60079-1 8; EN 50028]

ma

mb

Embedding of component in a sealing compound

Explosive atmosphere is kept away from potential ignition sources


Sealing compound is resistant against electrical, thermal, mechanical or chemical influences

Category 1 equipment possible (ma)

II 1 G*

II 2 G**

II 3 G**

*only ma

** ma/ mb

switchgear for low powers control

and signalling units

display devices sensors

o

Oil immersion

[EN 50015]

Embedding of components with a potential ignition source in oil – consequent separation from explosive atmosphere The maximum surface temperature is limited

II 2 G

II 3 G

transformers

starting rheostats

1 Types of protection d and e The most important type of protection for switchgear is the ‘flameproof enclosure’, usually together with the ‘increased safety’ type of protection. The ‘increased safety’ type of protection results from the fact that measures are taken which avoid ignition sources from coming into existence by using an increased level of safety. However, because switchgear produces ignition sources during normal operation, switchgear in this type of protection alone shall not be explosion-proof. Together with flameproof enclosures, 'increased safety’ however also plays an important role for switchgear and switchboards. In addition, for modern flameproof lamps, a combination of several types of protection is used in order to obtain the optimum in safety, functionality and cost-efficiency.

Electrical equipment for use in gas, vapours or dust (continued)

Type of protection [EN 50014 or EN 60079-0]

Description of protective measure Category(ies) Typical applications

Pressurised enclosure [EN 60079-2; EN 50016]

p

px

py

pz

Overpressure of an inert gas or air inside equipment with a monitoring device

Penetration of explosive atmosphere is impossible

-‘px'- Zone 1 is reduced to ‘non-explosive’ - ‘py’-Zone 1 is reduced to Zone 2 - ‘pz’-Zone 2 is reduced to ‘non-explosive’


Maximum component temperatures are limited

Simplified Category 3 equipment possible (pz)

II 2 G*

II 3 G**

* only px/py

** px/ py/pz

switch and control cabinets

analysis instruments

large motors

q

Powder filling [EN 50017

Embedding of components in powder

Transmission of an explosion from within is prevented


Housing must not be opened

II 2 G II 3 G

transformers

capacitors

heating-conductor junction boxes

mobile computers (e.g.: II 2 G EEx q (ib) IIC T4)

∟for ‘ib’-equipment

n [EN 60079-15] T y p e o f p r o t e c t i o n o n l y f o r →→→→

nA Non-sparking apparatus motors, housings, control electronics

nR Sparking apparatus with restricted-breathing enclosure

controls, suspended lamps

nZ

(nP)

Sparking apparatus with simplified pressurised enclosure

‘nP’ type of protection similar to EN 50021

nL Limited-energy apparatus electronic components

nC Sparking apparatus for which contacts are suitably protected (without nR, nZ, nL)

II 3 G

switchgear, connectors

‘v’ - transportable ventilated spaces [EN 50381]

Other types of protection

‘op’ – measures against incendive optical radiation [EN 60079-28]

Electrical equipment for use in dusts

Type of protection Description of protective measure Category(ies) Typical applications*

tD

Protected by enclosures [EN 61241-1]

(marking n. EN 50281-1-1

(repealed): ‘IP YX T. . . °C’)

Dust storage is prevented

Maximum gap dimensions are determined

Maximum surface temperature is limited

Marking: tD and A or B (taking into account dust layers up to 5 mm or over 5 mm) + 20, 21 or 22 (only A) e.g. tD A21

Minimum protection rating according to EN 60529: IP 6X – Zone 20 or conductive dust IP 5X – housing with bare live parts IP 4X – housing with isolated live parts

II 1 ID (tD A20)

II 2 D (tD A21)

II 3 D (tD A22)

apparatus by which sparks, arcs or hot parts occur during normal operation

complex industrial designs (controls, switch cabinets)

iD Intrinsic safety [EN 61241-1 1]

Current and voltage are limited in accordance with requirements for IIB and internal and external inductance and capacity are limited in accordance with requirements for IIB so that no ignitable sparks can occur



limited

IP6x type of protection or encapsulation

Live working possible

II 1 D

II 2 D II 3 D

measuring, monitoring and information systems and equipment

sensors - on physical, chemical or mechanical principles and with limited power

actuators on optical, acoustic and also limited to mechanical principles.

mD Encapsulation [EN 61241 -1 8]

Embedding of components, which could ignite a potentially explosive atmosphere through sparks or heating, in sealing compound

The maximum surface temperature is limited Sealing compound is resistant against electrical, thermal, mechanical or chemical influences

II 2 D

II 3 D

static coils in ballasts, magnetic valves or motors

relays and other switching devices of limited power

complete printed circuit board with electronic circuits.

control gears for low powers,

control and signalling units, display devices, sensors

pD Pressurised enclosures [EN 61241-4]

Through overpressure of a protective gas (air, inert or other suitable gas) inside the equipment housing, the ingress of an explosive atmosphere is avoided. The overpressure is maintained with or without constant flushing of the protective gas.



limited

II 2 D (pD21)

II 3 D (pD 22)

apparatus by which sparks, arcs or hot parts occur during normal operation

complex industrial designs (control systems), e.g. large machines, slip ring and commutator motors, switch and control cabinets, analysis instruments

Non-electrical equipment for use in gases, vapours, mists or dusts

Type of protection [EN 13463-1] Comments

Category(ies) * Typical applications

c Constructive safety [EN 13463-5]

Mechanically-produced ignition sources (e.g. through moving parts, produced heat surfaces, sparks and adiabatic compressions) are avoided through the choice of suitable constructive parameters and safety distances

Electrostatic charges are prevented

II 2 G II 2 D II 3 G II 3 D

agitators screw conveyors

couplings brakes gears

hydrostatic/pneumatic devices

belt drives ventilators

fr Flow restricting enclosure [EN 13463-2]

Only for Category 3 Accumulation of explosive atmosphere inside is prevented if the explosive atmosphere outside occurs only rarely or for short durations (Zones 2/21) Surface area temperature is limited

Also, a warning notice which informs the user how the housing must be installed in order to ensure that no static pressure difference which could cause a current occurs on the housing walls

II 3 G

d Pressurised enclosure

[EN 13463-3]

Explosion-proof design The transmission of flames to the outside environment is prevented

Maximum gap dimensions are determined



gears

pumps

k Liquid immersion [EN 13463-8]

The current level of protective fluid must be shown on measuring and display units; where appropriate, limits for tilt angles

II 2 G II 3 G

gears, e.g.

IIG c k II T<160°

b

Control of ignition sources [EN 13463-6]

Control of potential ignition sources which are not present during normal operation.

Where appropriate, shutdown before these are able to ignite (e.g. through temperature, speed and vibration monitors). The level of reliability of the monitoring devices is key for the effectiveness of this type of protection and thus for the equipment protected as such.

- Measuring and display units must be marked with the highest and lowest permissible operating values

- Protective systems which monitor ‘b equipment' :

(b1) IPL 1 (normal reliability, one category level)

(b2) IPL2 (especially reliable, two category levels) - Marking after the temperature class,

e.g. c T4 (b1)


* � Category 1 can be achieved through a combination of two independent types of protection.

Marking – examples

Equipment Range of application Marking Explanatory Notes

Lamps

Gas, Zone 1

II 2 G Ex e d m IIC T4

‘e’ –increased safety ‘d’ – flameproof enclosure, ‘m’ – encapsulation (housing for the power supply unit for power supply) II C - highest explosion group above ground T4 - for material with an ignition temperature > 135 °C (‘everything’ except carbon disulfide)

Gas, Zone 2

II 3 G Ex nA II T3

‘nA’ – non-sparking II – for all explosion groups above ground T3 – for material with ignition temperature > 200 °C (e.g. petrol, H2)

Gas, Zone 2

II 3 G Ex nR T*

(suspended lamps) ‘nR’ – sparking with restricted-breathing enclosure

Dust, Zone 21 II 2 D; IP 66 TO max* marking in accordance with EN 50281-1-1

Dust, Zone 22 II 3 D

IP54 T 80 °C marking in accordance with EN 50281-1-1

Dust, Zone 21 II 2 D; Ex tD TO max* marking in accordance with EN 61241-1

Lamps for fluorescent lamps

Dust, Zone 22

II 3 D Ex tD A22 IP54 T 80 °C

marking in accordance with EN 61241-1 – type of protection – short marking – the zone in which the equipment can be used - the IP rating - the maximum surface temperature

Motors

- Flameproof

enclosure

Gas, Zone 1

II 2 G Ex d / Ex de IIB/IIC T4

‘e’- increased safety, ‘d’-flameproof enclosure

- Increased safety

Gas, Zone 1 II 2 G Ex e II T3

-Motor protection relays for motors Category 1

Gas, dust II (2) G D the relay is located in the safe area; its protective function works in Category 2 equipment (Zone 1)

- Pressurised

enclosure

Gas, Zone 1

II 2 G Ex px e II T4

‘px’ – positive pressure ventilation which reduces the inside of Zone 1 housing to not potentially explosive

- (Non-sparking)

Gas, Zone 2

II 3G Ex nA II T2 -T3

Equipment Range of application Marking Explanatory Notes

Gears

Constructional safety ‘c’ Liquid immersion ‘k’

Gas, Zone 2

Dust, Zone 2

II 2G

Ex c k II T3

II 2D Ex c k T<160°C

EN 13463-5 Constructional safety ‘c’ EN 13463-8 Liquid immersion ‘k’ maximum surface temperature 160 °C, valid for dusts with an ignition or glow temperature > 240 °C

Intrinsically safe and associated apparatus

1. Associated apparatus

Use outside the potentially-explosive atmosphere

[EEx ib] IIC, [Ex ia] IIA

E.g. power supply units, switching amplifiers with intrinsically safe circuits. Rule for this type of apparatus: (E)Ex and ‘ib’ or ‘ia’ are put in square brackets.

2. Associated apparatus which complies with another type of protection

Use in a potentially-explosive atmosphere

EEx d [ib] IIC T5, Ex q [ia] IIB T6

E.g. power supply apparatus with an intrinsically safe circuit whereby the power supply apparatus is installed in a flameproof enclosure. Rule for this type of apparatus: only ‘ib and ‘ia’ in square brackets after the marking for the other types of protection.

3. Intrinsically safe apparatus


EEx ib IIC T6, Ex ia IIA T4

Examples of markings: two-wire transducers, proximity switches.Rule for this type of apparatus: no brackets.

4. Intrinsically safe apparatus with several intrinsically safe circuits various levels of protection


EEx ib[ia] IIC T5

Examples of markings: e.g. preamplifier of ‘ib’ level of protection. the input circuit of which complies with the ‘ia’ level of protection.

Rule for this type of apparatus: if the level of protection of one or more circuits of an intrinsically safe apparatus differs from that of the apparatus then the different level of protection shall be put in square brackets.

*Temperature class and maximum surface temperature vary depending on wattage.


Annex 4

Application of § 4(5) of the 11th GPSGV

In accordance with § 4(5) of the Ordinance on Explosion Protection (ExVO, 11th GPSGV), the authority responsible may, upon request, permit equipment, protective systems and devices to be placed on the market without using the conformity assessment procedure in accordance with Directive 94/9/EC. Additionally, the involvement of an approved body, necessary in certain circumstances, may be dispensed with. With § 4(5) ExVO, the provision of Article 8(5) of Directive 94/9/EC is implemented in German law. This derogation from Directive 94/9/EC is possible:

� upon a duly substantiated and successful request to the competent authority of the respective Member State, and

� if the use of products is in the interest of health and safety where this interest may be obstructed, e.g. through a delay due to the conformity assessment procedure, and

� if it is restricted to the territory of the Member State concerned.

This condition could be used in safety-related cases in which the respective products are urgently needed and there is not enough time to carry out the complete conformity assessment procedure (or to complete this procedure). It should be made clear that in terms of the conditions for restricted use, the use of this clause must remain the exception and must not become normal procedure.

The derogation under § 4(5) ExVO is aimed at

� the placing on the market of individual equipment, protective systems or devices (custom-made products) for which placing on the market using the conformity assessment procedure in accordance with Directive 94/9/EC would mean a disproportionate expense or delay, or

� the modification of equipment, protective systems or devices already placed on the market for the operator by a service provider.

In this case, safety is guaranteed by other means (e.g. specially skilled personnel, acceptance testing by an approved inspection body). These conditions shall be stipulated in the ancillary provisions of the derogation. The derogation under § 4(5) ExVO is not suitable for allowing a company to place a series of products or product system (’kit') on the market. This is decided on a case-by-case basis.


Annex 5

Placing electrical and steam tracing systems on the market

Electrical tracing systems .

1. Electrical tracing systems shall be treated, in terms of placing on the market, as combined equipment (sub-assemblies). It is therefore not sufficient if an EC-type-examination certificate exists for the components of the sub-assembly relevant for explosion protection – where required – because the temperature class of the heating is only obtained through the proper design and specifications in installation instructions (e.g. positioning of the temperature sensors of temperature limiters).

2. For assembling, the manufacturer of the sub-assembly must thereby apply the appropriate conformity assessment procedure for electrical equipment pursuant to Directive 94/9/EC. For Category 2 electrical equipment, these are the EC-type-examination procedure in connection with the procedure relating to conformity to type referred to in Annex VI, or the procedure relating to product quality assurance in accordance with Annex VII. Application of the module, or the procedure relating to EC unit verification in accordance with Annex IX of Directive 94/9/EC.

3. For the type-examination procedure, the following shall be distinguished: a) ‘self limitation’ design principle

‘Normal’ type-examination possible as the temperature class is the direct result of the design of the heater band. The system is supplied by the manufacturer as a kit with the EC declaration of conformity to the installer. The installation and putting into service can be carried out by a qualified electrician with general knowledge of explosion protection.

b) 'temperature monitoring’ and 'stabilising' design principle

The EC-type-examination is carried out for a (modular system) for which the temperature class of the heating is only obtained through the proper design and installation (e.g. design of the ‘hot spot’, positioning of the temperature sensor). The manufacturer of the system must provide detailed information in the instructions on the design and installation as well as the required qualification of the installer/installation company. If necessary, a design programme shall be provided. An auditing of the installation company may be required in the instructions. This information shall also be examined within the scope of the EC-type-examination. The result is a ‘system certificate’. The system is placed on the market as a pre-commissioned kit with a declaration of conformity and name-plate. Note: A ‘stabilised design' system must be installed and put into service by a ‘qualified electrician with additional knowledge on explosion protection and electrical tracing technology'. A ‘temperature monitoring' system may only be installed and put into service by a company specialised in flameproof electrical tracing systems. The qualifications are explained in more detail in Recommendation VE 25 of the Verband der industriellen Energie- und Kraftwirtschaft e. V. (German Federation of Industrial Energy Consumer and Self-producers (VIK)).

4. In exceptional justified cases, the placing on the market of the sub-assembly pursuant to § 4(5) ExVO may be permitted (especially for significant changes or alterations of electrical tracing systems already placed on the market). It may therefore be possible for electrical heaters with technical problems to be quickly renewed as needed without, e.g. the contents of a pipe solidifying or freezing. In this case, the individual components should have been placed on the market according to legal requirements.

Steam tracing systems 1. Steam tracing systems are generally not considered equipment/sub-assemblies within

the meaning of Directive 94/9/EC because they do not feature any potential ignition source of their own. The steam which is responsible for the surface temperature is usually supplied onsite. The surface temperature shall be viewed as an operational ignition source and not as the steam tracing system’s own ignition source.

2. If the manufacturer of the heater is exclusively responsible for the design and thus also for compliance with the maximum permissible surface temperature, placing it on the market as an ‘ATEX sub-assembly’ will also be considered. In this case, for non-electrical equipment for Equipment Category 2, this must be filed at a notified body.


EC declaration of conformity in accordance with Directive 94/9/EC

Proposal for form, structure and content

Annex 6

EC Declaration of Conformity1)

within the meaning of EC Directive 94/9/EC

We hereby declare 2) that Description of products (including at least the general technical marking, brand, type, serial number, additional information if any within the meaning of Annex I: Criteria determining the classification of equipment-groups into categories)

the following relevant provisions are complied with in the design supplied:

Directive 94/9/EC (‘ATEX’) Directive 98/37/EC (‘Machines’) Directive 89/336/EC (‘EMC’)

Harmonised standards applied 3)

Product-specific Standards EN ... (Type- C- Standards, where available, also where applicable Draft prEN ), e.g. EN 1127, EN 13463 -Part 1, Part 2, Part 3, Part 5, Part 6, Part 7, Part 8, ...

Notified body 4) according to Annex……. Name, address of the notified body

called upon for ................................................ (choose from the list below)

the keeping of documentation for Category 2 mechanical products (recommended according to guides) product quality assurance in accordance with Annex IV product verification in accordance with Annex V (Category 1) confirmation of ‘conformity to type’ in accordance with Annex VI product quality assurance in accordance with Annex VII (Category 2 – electrical product) EC-type-examination (EC-type-examination-certificate No. )in accordance with Annex III or unit verification in accordance with Annex IX

Name, identification number and address of the notified body and the number of the EC-type-examination-certificate (the notified body here is the body which issues the EC-type-examination certificate, this information shall only be given if an EC-type-examination certificate has been issued.

It is also explicitly stated in the guide that (non-EC) type-examination certificates, statement of conformity, etc. should not appear in the declaration of conformity.

According to the European Commission guide, indication of the notified body which was in charge of the QM approval is not required but also not forbidden!

………………………………………………………………….. legally binding; concerning the signatory (date) (signature

Footnotes overleaf

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EGKED.DOC January 1999 Kr/Sk

Document form: � manufacturer sheet with full address; where applicable, additional company and address of the

authorised representatives in the EU (where applicable, also importers in the country-of-use – translator of the instructions if according to agreement),

� printed or typewritten,

� original in one of the official EU languages as well as the translation in the official language of the user country.

Footnotes:

1) The manufacturer can decide whether to issue separate declarations of conformity for the directives to be applied; in this case the declaration of conformities must state in each case which directives are observed. It is also possible for a summary of the declaration of conformity to be issued.

2) The name of the manufacturer or his/her authorised representative in the EU.

3) The engagement of ’notified bodies’ for the EC-type-examination and a corresponding QM module is stipulated for Category 1 (electrical and mechanical products) as well as for Category 2 (e.g. or electrical products).

4) Standards and specifications for machine safety need not be mentioned; reference to the harmonised (product) standards is recommended however.


List of notified bodies in accordance with Directive 94/9/EC

Body type Name Country NB 0026 AIB-VINÇOTTE INTERNATIONAL S.A. Belgium NB 0029 APRAGAZ A.S.B.L. Belgium

NB 0034 TÜV SAARLAND E.V. Germany

NB 0035 TÜV RHEINLAND INDUSTRIE SERVICE GMBH - TÜV Rheinland Group Germany

NB 0038 Lloyd's Register Verification Limited United Kingdom

NB 0044 TÜV NORD CERT GmbH Germany

NB 0051 IMQ ISTITUTO ITALIANO DEL MARCHIO DI QUALITÀ S.P.A. Italy

NB 0066 ISTITUTO DI CERTIFICAZIONE EUROPEA PRODOTTI INDUSTRIALI S.P.A. Italy

NB 0080 INSTITUT NATIONAL DE L'ENVIRONNEMENT INDUSTRIEL ET DES RISQUES France

NB 0081 LABORATOIRE CENTRAL DES INDUSTRIES ELECTRIQUES France

NB 0086 BSI PRODUCT SERVICES United Kingdom

NB 0100 ISTITUTO SUPERIORE PREVENZIONE E SICUREZZA DEL LAVORO Italy

NB 0102 PHYSIKALISCH-TECHNISCHE BUNDESANSTALT-- (PTB) Germany

NB 0123 TÜV SÜD Product Service GmbH Germany

NB 0158 DEKRA EXAM GmbH Zertifizierungsstelle Germany

NB 0163 LABORATORIO OFICIAL JOSE MARIA DE MADARIAGA Spain

NB 0344 KEMA Quality B.V. Netherlands

NB 0359 INTERTEK TESTING & CERTIFICATION LTD United Kingdom FACHAUSSCHUß FLEISCHWIRTSCHAFTPRÜF- UND ZERTIFIZIERUNGSSTELLE IM NB 0391 BG-PRÜFZERT

Germany

NB 0396 TEKNOLOGISK INSTITUT - Sekretariat for Typeafprøvning Denmark

NB 0398 CPM - ISTITUTO RICERCHE PROVE ED ANALISI SRL Italy

NB 0402 SP Sveriges Tekniska Forskningsinstitut AB Sweden

NB 0408 TÜV AUSTRIA SERVICES GMBH Austria

NB 0425 ICIM - ISTITUTO DI CERTIFICAZIONE INDUSTRIALE PER LA MECCANICA S.P.A. Italy

NB 0470 NEMKO AS Norway

NB 0492 INSTITUT SCIENTIFIQUE DES SERVICES PUBLICS - SIEGE DE COLFONTAINE Belgium

NB 0496 DNV - MODULO UNO SCARL Italy SOCIETE NATIONALE DE CERTIFICATION ET D'HOMOLOGATION S.À.R.L. NB 0499 (SNCH)

Luxembourg

NB 0518 SIRA CERTIFICATION SERVICE United Kingdom

NB 0537 VTT (TECHNICAL RESEARCH CENTRE OF FINLAND) Finland

NB 0539 UL INTERNATIONAL DEMKO A/S Denmark

NB 0575 DET NORSKE VERITAS AS Norway FORSCHUNGSGESELLSCHAFT FÜR ANGEWANDTE SYSTEMSICHERHEIT UND NB 0588 ARBEITSMEDIZIN mbH

Germany

NB 0589 BUNDESANSTALT FÜR MATERIALFORSCHUNG UND PRÜFUNG (BAM) Germany IBEXU- INSTITUT FÜR SICHERHEITSTECHNIK GMBHINSTITUT AN DER NB 0637 TECHNISCHEN UNIVERSITÄT - BERGAKADEMIE FREIBERG

Germany

CESI (CENTRO ELETROTECNICO SPERIMENTALE ITALIANO) GIACINTO MOTTA NB 0722 SPA

Italy

NB 0820 ZELM EX PRÜF-UND ZERTIFIZIERUNGSSTELLE Germany NB 0891 TRaC EMC & SAFETY LTD United Kingdom

NB 0948 TUV ITALIA SPA Italy

NB 1026 FYZIKALNE TECHNICKY ZKUSEBNI USTAV S.P. Czech Republic

NB 1131 CONSORZIO EUROPEO CERTIFICAZIONE - CEC Italy

NB 1180 BASEEFA LIMITED United Kingdom

NB 1254 QS Zürich AG Switzerland (MRA)

NB 1258 ELECTROSUISSE SEV Switzerland (MRA)

NB 1293 EVPU a.s. Slovakia

Annex 7

NB 1304 SLOVENIAN INSTITUTE OF QUALITY AND METROLOGY - SIQ Slovenia

NB 1354 Technicka inspekcia a.s. Slovakia

NB 1370 BUREAU VERITAS ITALIA S.P.A. Italy

NB 1418 EXVA ROBBANASBIZTOS BERENDEZESEK VIZSGALO ALLOMASA KFT. Hungary

NB 1433 URZAD DOZORU TECHNICZNEGO Poland

NB 1453 GLÓWNY INSTYTUT GÓRNICTWA Poland

NB 1456 INSTYTUT TECHNIKI GORNICZEJ KOMAG Poland

NB 1461 OSRODEK BADAN ATESTACJI I CERTYFIKACJI OBAC SP. Z.O.O. Poland

NB 1547 INOVA CENTRUM INNOWACJI TECHNICZNYCH SP. Z O.O. Poland

NB 1637 SGS-TÜV GMBH Germany

NB 1712 EPSILON TECHNICAL SERVICES LTD United Kingdom

NB 1725 FM APPROVALS LTD. United Kingdom Institutul National de Cercetare-Dezvoltare pentru Securitate Miniera si Protectie NB 1809 Antiexploziva

Romania

NB 1877 "MINPROEKT" JSC - Division "Scientific and Research Activity" Bulgaria JEDNOSTKA OPINIUJACA, ATESTUJACA I CERTYFIKUJACA WYROBY TEST SP. Z NB 2057 O.O.

Poland

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