Do you manufacture equipment or protective systems for use in potentially explosive atmospheres? Do you process, trade or import them?

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1 TÜV NORD CERT GmbH Geschäftsstelle Hannover Am TÜV Hannover Zertifizierung Certification body for equipment according to Directive 94/9/EC of TÜV NORD CERT GmbH Summarized Information Directive 94/9/EC Do you manufacture equipment or protective systems for use in potentially explosive atmospheres? Do you process, trade or import them? This summarized information details the legal principles and basic requirements which must be observed in order to be able to affix the Mark. Your Contact Partners: Mr. Schwedt, phone No (0)511/ , KSchwedt@tuev-nord.de Mr. Meyer phone No (0)511/ , AMeyer@tuev-nord.de Summarized Information Page 1 of 21

2 1. Introduction One objective of the EC domestic market is to reduce technical trade barriers in order to permit a free flow of goods within the EC. For this reason uniform requirements for products are set forth in EC Directives within the scope of a harmonization concept designed to guarantee the health and safety of persons, domestic animals and objects. The compliance with the basic requirements for health and safety protection is absolutely necessary in order to guarantee the safety of devices and Components. These requirements have to be implemented meticulously taking into account the state-of-the-art technology attained at the time of manufacture of these devices. Objective and purpose of the Directive for equipment and protective systems intended for use in potentially explosive atmospheres Benefit for manufacturers Terms For equipment, components, and protective systems for use in potentially explosive atmosphere the Directive 94/9/EC is valid. The requirements of the Directive must be realized by the manufacturer during the design and production phase. The proper and intended application of equipment and protective systems is the basic prerequisite for their safety against explosion. This must be ensured by means of corresponding information (e.g., in the users instructions). The conformity of these devices with the requirements of this Directive and all further relevant EC Directives (e.g., EMC Directive) is made visible by means of the CE mark. In order to facilitate proof of conformity for manufacturers and in order to provide an opportunity for testing, harmonized standards describing these requirements have been published by EU members. The application of these standards is not a mandatory requirement. A list of the harmonized standards and their sources is published in the Official Journal of the European Community. Products carrying the CE mark have a so-called "passport" for EU countries, i.e. no member state may prohibit, limit or hinder the distribution and putting into operation of these products on their territories. The Directive for equipment and protective systems intended for use in potentially explosive atmospheres may be applied from March 1, 1996 onwards. Member states will allow the distribution and putting into operation of equipment and protective systems according to currently applicable national law until June 30, After the1 st of July 2003 only equipment and protective systems which are conform to the Directive 94/9/EC may be brought into the market. Old certificates of conformity are no longer valid. Summarized Information Page 2 of 21

3 2. Legal Principles European Union Germany Directive 94/9/EC of the European Parliament and Council dated March 23 rd 1994 for the harmonization of the legal regulations of member states for equipment and protective systems intended for use in potentially explosive atmospheres published in the Official Journal of the EC Journal no. L 100 dated August 19, 1994, page 1 The Directive for equipment and protective systems intended for use in potentially explosive atmospheres was put into effect under national law via the eleventh Ordinance of the Equipment Safety Act (GSG) dated December 12, Field of Application European Union Who is affected? Devices Restrictions If basic health and safety requirements are met, distribution must not be impeded by any member state. If requirements are not met, distribution may be prohibited or the product may be recalled, respectively. All manufacturers, respectively their authorized representatives, importers and dealers distributing equipment, protective systems and components according to 94/9/EC. This directive applies to equipment, protective systems and components intended for use in potentially explosive atmospheres, as well as to safety, controlling or regulating devices for use outside of potentially explosive atmospheres (which, however, are necessary for or contribute to the safe operation of equipment and protective systems with regard to explosion hazards), with the exception of the devices and areas indicated in Chapter 1, Article 1, sentence (4) which are listed as follows: The following equipment, protective systems and areas are excluded: medical appliances designated for use in medical areas equipment and protective systems for which the explosion hazard is caused exclusively by the presence of explosives or chemically unstable substances; Summarized Information Page 3 of 21

4 equipment which is intended for use in domestic and noncommercial environments in which an explosive atmosphere forms only seldom and due to unintentional leakage of fuel; personal protective equipment in the sense of Directive 89/686/EEC; seagoing vessels and mobile off-shore installations, as well as the equipment on-board these vessels or installations; means of transport, i.e., vehicles and accompanying trailers which are designed exclusively for the transportation of persons and goods in the air, on road and railway networks or by water. Vehicles which are to be used in areas subject to explosion hazards are not excluded; products in the sense of article 223, section q, letter b) of the contract (e. g. armed forces) Summarized Information Page 4 of 21

5 4. Changes due to Directive 94/9/EC Groups and Categories Group Category Application I M1 Underground mines, as well as their above-ground installations Continued operation in case of an explosive atmosphere must be guaranteed I M2 Underground mines, as well as their above-ground installations When an explosive atmosphere is present, the turning off of the devices must be possible Groups and Categories Group Category Application II 1 G 1 D Gases, vapours, mists, zone 0 dust zone 20 II 2 G 2 D Gases, vapours, mists, zone 1 dust zone 21 II 3 G 3 D Gases, vapours, mists, zone 2 dust zone 22 Protection objectives Equipment and protective systems may only be placed on the market if they are manufactured - according to the current state-ofthe-art technology in the Community so that in case of proper installation and maintenance, as well as if they are used in accordance with their designated use they do not endanger the safety of people and domestic animals or the preservation of material assets. Safety requirements (Annex II) General requirements: technological knowledge have to be adopted and utilized equipment and protective systems must be designed and manufactured taking into account state-of-the-art technology Summarized Information Page 5 of 21

6 in the field of explosion safety so that they may be operated safely during their projected lifetime. include user manual affix mark Important! All manufacturers must determine if other directives in addition to 94/9/EC must be taken into consideration, e.g., the EMC Directive. Consultation of an accredited test laboratory may be helpful at this stage. 5. What must be done? CE-marking CE stands for "Communautés Européennes" (European Community). Each product which is distributed in the EC after March 1, 1996 can be provided with the CE mark according to the 94/9/EC Directive. It indicates that the manufacturer applied this directive for the product. The manner in which a manufacturer may achieve CE marking is shown in the following scheme: Summarized Information Page 6 of 21

7 Declaration of conformity according to 94/9/EC for electrical products and motors with internal combustion for use in explosion hazardous locations (Graph 1) Electrical Product for use in hazardous locations EC type examination by Notified body (Annex III) Group I/II Category M1/1 QA production (Annex IV) OR Product verification (Annex V) Unit verification (Annex IX) Manufacturer s Declaration of conformity acc. annex X, B CE marking by the manufacturer acc. annex X, A Group I/II Category M2/2 Group II Category 3 EC type examination by Notified body (Annex III) Conformity to type (Annex VI) OR Product quality assurance (Annex VII) Internal control of production (Annex VIII) Summarized Information Page 7 of 21

8 Declaration of conformity according to 94/9/EC for non-electrical products for use in explosion hazardous locations (Graph 2) Non-Electrical Product for use in hazardous locations EC type examination by Notified body (Annex III) Group I/II Category M1/1 QA production (Annex IV) OR Product verification (Annex V) Unit verification (Annex IX) Group I/II Category M2/2 Internal control of production by manufacturer (Annex VIII) Forwarding of documentation (Annex VIII) Manufacturer s Declaration of conformity acc. annex X, B CE marking by the manufacturer acc. annex X, A Group II Category 3 Internal control of production by manufacturer (Annex VIII) Summarized Information Page 8 of 21

9 Concrete steps for EC Declaration of Conformity and the affixation of the CE mark 1st Step: Clarification of the following questions Which EC directives apply to the product? Which basic requirements result from the directives? Which standards must be observed (state-of-the-art)? Do harmonized European standards already exist? Do international (IEC) or national standards and specifications exist? Does the product meet safety requirements? 2nd Step: Distinction between electrical and non-electrical eqipment In case of electrical equipment the conformity evaluation method shown under graph 1 is relevant. In case of non-electrical equipment the conformity evaluation method under graph 2 is relevant. Depending on the product group and category as well as the distinction between electrical and non-electrical equipment quality assurance measures from internal production control up to quality assurance within the production are necessary. 3rd Step: Guarantee of the protection requirements Essential health and safety requirements must always be met. Standards If the manufacturer exclusively applies the harmonized standards published in the Official Journal of the European Community, it can be assumed that the products comply with the requirements of the Directive. If no corresponding harmonized standards are published for a product, international safety requirements (e.g., the IEC) can also be applied if these provisions have been made known within the scope of individual state procedures. If such safety requirements do not exist either, national standards may be applied if these ensure the same safety standard as required by the target country. For electrical equipment intended for use in potentially explosive gas atmosphere the series of standards EN ff is valid, for the intended use in potentially explosive dust atmosphere EN ff is applicable. For non-electrical products the standard EN ff has to be applied. For such products a risk analysis of the existing ignition sources - attributed to the taken measures is required. Summarized Information Page 9 of 21

10 An example of a possible risk analysis is shown in the following table. Potential Ignition Source Normal Conditions Ignition Source 1 Expected Malfunction Ignition Source 2 Ignition Source 4 Rare Malfunction Ignition Source 3 Measures to avoid the Ignition Source Used Ignition Source Control Mandatory legal regulations Only those products which meet the essential health and safety requirements specified in Directive 94/9/EC may be placed on the marked. These are the only mandatory legal regulations. The above mentioned harmonized international and national technical standards, which merely lead to the assumption of conformity of the devices manufactured according to these standards, are not legally required. 4th Step: Activities up to the EC declaration of conformity The corresponding activities according to group and category are to be taken from the schemes graph 1 and 2. EC Type Examination The conformity of a representative type to the Directive and the harmonized standards will be assessed during the EC Type Examination. For this examination the manufacturer or his authorized representative or the person who is responsible for bringing the product into the market may submit a technical documentation (according to annex III chapter 3. of the Directive) as well as at least one test sample to a notified body. The documentation shall permit the assessment of conformity of the product with the requirements of the Directive. The records shall include a general description, the applicable standards and the technical realization of the requirements listed in the standards. Additional documents such as calculations, product drawings, circuit diagrams, layout and the user manual are necessary. The notified body assesses the submitted documents and the type and in case of conformity with the Directive delivers an EC Type Examination certificate. Summarized Information Page 10 of 21

11 Quality assurance The established QA system shall ensure the compliance of the product with the type described in the EC Type Examination certificate, the technical documentation and the requirements of the Directive. The notified body verifies the QA system on the basis of the submitted documents and an audit on the manufacturer s side. Focal points of the assessment are the product related policies of the Management, the training of employees, the document control for product documents and as such, the nomination of an authorized person to act according to the Directive 94/4/EC, the regularly carried out management reviews as well as the internal audits. Furthermore the purchasing process and the control of customer supplied products are evaluated in order to check the conformity with the requirements. Also the process control including inspection and testing as well as the control of inspection, measuring and test equipment and the control of nonconforming products, i.e. products which are not conform to the EC Type Examination, will be assessed. In case of a positive assessment the QA-system will be certified by a notified body for a period of 3 years. A complete process of a possible conformity assessment procedure is shown in graph 3. Summarized Information Page 11 of 21

12 Possible complete conformity assessment procedure according to Directive 94/9/EC (Graph 3) Contract for QM Approval Check of QM Documentation Directive 94/9/EC EC-Type- Examination QM-Approval / Certification Quality Assurance Production, Product Contract EC-Type- Examination Type of protection Standards, deadlines, costs Check of Product Documentation User Manuals Circuit Diagrams Calculations Data sheets Documents Management Processes Int. Audits Practical Tests Temperatures IP Code Mechanical Tests Documentation of the Test Auditing of the company Management R+D Production Sales Bringing into the market Declaration of Conformity CE-Mark Certification EC-Type- Examination Certificate Certification QM Approval / Certificate Assessment Recommendation for certification Assessment Protocols Test Reports Recommendation for certification Audit Report Unit verification With regard to the affixation of the CE mark, the manufacturer may optionally apply the procedure of EC Unit Verification according to Annex IX for all products. Summarized Information Page 12 of 21

13 For this procedure each single device is tested regarding its conformity with the Directive respectively the applicable harmonized standards. In case of a positive result of this test the EC Declaration of Conformity is issued. Storage of a dossier For non electrical equipment of category M2 or 2 the manufacturer communicate under his own responsibility a dossier to a notified body accredited therefore. The documentation extent is characterized in annex VIII chapter 3 of the Directive. The notified body acknowledges the receipt of documentation and retains it. The body assesses neither the completeness nor the technical content. 5th Step: EC Declaration of Conformity Ensurance must be given in the EC Declaration of Conformity that a product meets the requirements of the Directive 94/9/EC and, thus, all basic protection requirements. Integral parts of this declaration include: Name or identification tag and address of the manufacturer or his authorized agent residing in the Community Description of the device, the protective system or component in the sense of article 1, section 2 All relevant provisions which the device, the protection system or the component is subject to in the sense of article 1, sect. 2 When necessary, name, identification number and address of the notified body, as well as number of the EC Type Examination Certificate When necessary, reference to the harmonized standards When necessary, the applied standards and technical specifications When necessary, reference to the other applied Community directives Identity of the signatory authorized by the manufacturer or his authorized agent residing in the Community 6th Step: CE Marking The CE-mark is always affixed by the manufacturer on the basis of the EC Declaration of Conformity. The identification number of the notified body assessing quality assurance is added to the CE mark. The minimum vertical dimension of the CE mark is 5 mm. The proportions of the CE mark must be exactly adhered to (see grid on page 1). The affixing of similar marks on products which could be confused with the CE mark is prohibited. Summarized Information Page 13 of 21

14 7th Step: Storage period The technical documents together with certificates from the notified body must be made available for inspection by national authorities for a period of at least 10 years after the last manufacturing of the product. 6. General Questions CE marking and advertising CE marking and quality management All devices must be provided with the CE mark from July, 7th, 2003 onwards. However, CE marking is possible from March,1st, 1996 onwards and documents the conformity with laws which are valid throughout Europe. A certified QM system according to Annex IV, resp. VII, simplifies the conformity assessment procedure for all groups and, thus, represents a clear advantage in comparison to Unit Verification and in comparison to Annex VI (conformity to type). Additionally, a QM system according to DIN ISO 9001 facilitates the preparation of the Declaration of Conformity by the manufacturer, e.g., as far as documentation and proof that all requirements were met are concerned. Moreover, a QM system is already very often required by customers. It is recommendable on the basis of product liability. Quality assurance production, resp. product Period of validity of QM certificates Fulfillment of the general requirements is assumed if a certificate according to ISO 9001 is available. Additionally equipment-specific requirements must be evaluated. The notified body issues a certificate for a product category (e.g., MSR devices). Upon submission of a TÜV-CERT certificate according to ISO 9001, we will try to obtain an adequate period of validity. A period of validity of three years with annual monitoring audits is customary in Germany for certificates according to ISO Summarized Information Page 14 of 21

15 7. Assistance from the TÜV Nord Group Product testing and system certification with TÜV NORD CERT In order to be able to offer our customers a still more comprehensive service in the field of product and system certification the TÜV NORD CERT was founded on July, 1 st, 2001, a company in which experts and auditors work closely together. Service offered by TÜV NORD CERT Assessment and Certification of equipment and components like EC Type Examination, Unit Verification etc. Assessment of Quality Assurance Systems according to the Directive. Assessment of the functional safety of safety-, controlling-, and regulating devices. General information to hazardous location, functional safety, electromagnetic compatibility, electrical safety, standards, and test marks. Certification of Quality Management Systems according to ISO 9001, ISO 14000, ISO etc. Furthermore the expert knowledge of our colleagues from the TÜV NORD Engineering branch as well as from the certification and environmental experts is always at our disposal. Thus a high level of expert knowledge is available for you in the most different special fields which is meanwhile based on an experience of 125 years. Due to the comprehensive technical knowledge, also of closely related technical fields (such as overflow protective devices, questions of functional reliability) we are able to offer you optimum consultation in the conceptual phase. IECEx scheme TÜV NORD CERT GmbH is as well a certification body (IECExCB) and test laboratory (IECExTL) within the IECEx Scheme. The main objective of the scheme is the national acceptance of the internet based Certificate of Conformity (CoC) instead of different national certification procedures. In general an IECExTL will test the equipment and issue an IECEx test report. The IECExCB will issue an internet based certificate of conformity (IECExCoC) if an IECExTR is supplied and if the manufacture of the product is under surveillance which is proof in a Quality Assessment Report (IECExQAR). In the transitional period before the main objective is reached a Summarized Information Page 15 of 21

16 mutual acceptance of IECEx test reports by the participating bodies is agreed. Scope of Accreditation in case of Directive 94/9/EC Testing and certification of equipment Electrical Equipment, safety-, controlling-, and regulating devices as well as components of Group I and II Category 1, 2, 3 with all types of protection Non electrical Equipment of Group II Category 1, 2, 3 like fork lift trucks, pumps, ventilators, internal combustion engines, mechanical conveyors, mills Scope of accreditation for the approval of the quality assurance Electrical Equipment, safety-, controlling-, and regulating devices as well as components of Group I and II Category 1, 2, 3 with all types of protection Non electrical Equipment of Group II Category 1, 2, 3 like fork lift trucks, pumps, ventilators, internal combustion engines, mechanical conveyors, mills Scope of acceptance within the IECEx scheme General Requirements IEC Flameproof d IEC Pressurised Enclosures "p" IEC Sand-filled Apparatus "q" IEC Oil-immersed Apparatus "o" IEC Increased Safety "e" IEC Intrinsic Safety "i" IEC Type of Protection "n" IEC Encapsulation "m" IEC Intrinsically Safe Systems IEC Zone 0 Electrical Apparatus IEC Field bus i Safety concept (FISCO) IEC Protection op IEC Combustible dust - General requirements IEC Protection by Enclosures td IEC Protection Dust Overpressure pd IEC Protection by intrinsic safety id IEC Encapsulation md IEC What speaks in favor of a co operation with TÜV NORD CERT? Certification of quality management systems; approval of the quality assurance and product certification according to the Directive from one source Summarized Information Page 16 of 21

17 Customer-oriented structuring of quotations You receive an individual modular quotation. Your product quality is confirmed by a neutral body which is accredited according to the European standard. Moreover, we offer a variety of further services, such as, e.g., consultation during the introduction or optimization of quality management systems. Flexible scheduling National and international presence Through worldwide subsidiaries and cooperation partners, we are in a position to provide you with consultation on national and international matters. Professional and technical competence Our experts from the most varied of technical fields are at your disposal for individual problem solutions. Our employees are represented in all essential standardization committees and are, therefore, always informed of the latest developments. Further Information For further information please contact: Certification of Quality Management Systems Dipl.-Ing. G. Seewald Approval of Quality Assurance Systems Dipl.-Ing. A. Meyer Dipl.-Ing. K.-H. Schwedt Low Voltage Directive, GS mark Dipl.-Ing. M. Eck Dipl.-Ing. A. Brinkmann Machinery Directive Dipl.-Ing. R. Laborenz Dipl.-Ing. M. Wucherpfennig Safety related Services Prof. Dr. U. Adolph Dipl.-Ing. A. Struß Additional information also on Summarized Information Page 17 of 21

18 Harmonized standards in accordance to 94/9/EC, published April 2008, more information on EN :2004 EN :2006 EN :2007 EN :2002 EN 1710:2005 EN 1755:2000 EN :2000 EN :2000 EN :2000 EN 1839:2003 EN 12581:2005 EN 12621:2006 EN :2005 EN 12874:2001 EN 13012:2001 EN :2003 EN 13237:2003 EN :2001 EN :2004 EN :2005 EN :2003 EN :2005 EN :2003 EN 13616:2004 EN :2004 EN :2004 EN :2004 EN :2003 EN :2005 Safety of machinery Safety requirements for the design and construction of printing and paper converting machines Part 1: Common requirements Safety of machinery Safety requirements for the design and construction of printing and paper converting machines Part 2: Printing and varnishing machines including pre-press machinery Explosive atmospheres Explosion prevention and protection Part 1: Basic concepts and methodology Explosive atmospheres Explosion prevention and protection Part 2: Basic concepts and methodology for mining Equipment and components intended for use in potentially explosive atmospheres in underground mines Safety of industrial trucks Operation in potentially explosive atmospheres Use in flammable gas, vapour, mist and dust Reciprocating internal combustion engines Safety requirements for design and construction of engines for use in potentially explosive atmospheres Part 1: Group II engines for use in flammable gas and vapour atmospheres Reciprocating internal combustion engines Safety requirements for design and construction of engines for use in potentially explosive atmospheres Part 2: Group I engines for use in underground workings susceptible to firedamp and/or combustible dust Reciprocating internal combustion engines Safety requirements for design and construction of engines for use in potentially explosive atmospheres Part 3: Group II engines for use in flammable dust atmospheres Determination of explosion limits of gases and vapours Coating plants Machinery for dip coating and electrodeposition of organic liquid coating material Safety requirements Machinery for the supply and circulation of coating materials under pressure Safety requirements Mixing machinery for coating materials Safety requirements Part 1: Mixing machinery for use in vehicle refinishing Flame arresters Performance requirements, test methods and limits for use Petrol filling stations Construction and performance of automatic nozzles for use on fuel dispensers Leak detection systems Part 1: General principles Potentially explosive atmospheres Terms and definitions for equipment and protective systems intended for use in potentially explosive atmospheres Non-electrical equipment for potentially explosive atmospheres Part 1: Basic method and requirements Non-electrical equipment for use in potentially explosive atmospheres Part 2: Protection by flow restricting enclosure fr Non-electrical equipment for use in potentially explosive atmospheres Part 3: Protection by flameproof enclosure d Non-electrical equipment intended for use in potentially explosive atmospheres Part 5: Protection by constructional safety c Non-electrical equipment for use in potentially explosive atmospheres Part 6: Protection by control of ignition source b Non-electrical equipment for potentially explosive atmospheres Part 8: Protection by liquid immersion k Overfill prevention devices for static tanks for liquid petroleum fuels EN 13616:2004/AC:2006 Petrol filling stations Part 1: Safety requirements for construction and performance of metering pumps, dispensers and remote pumping units EN :2004/AC:2006 Petrol filling stations Part 2: Safety requirements for construction and performance of safe breaks for use on metering pumps and dispensers Petrol filling stations Part 3: Safety requirements for construction and performance of shear valves Determination of the maximum explosion pressure and the maximum rate of pressure rise of gases and vapours Part 1: Determination of the maximum explosion pressure Determination of maximum explosion pressure and the maximum rate of pressure rise of gases and Summarized Information Page 18 of 21

19 EN 13760:2003 EN 13821:2002 EN 13980:2002 EN :2004 EN :2006 EN :2006 EN :2004 EN 14373:2005 EN 14460:2006 EN 14491:2006 EN :2006 EN :2006 EN 14522:2005 vapours Part 2: Determination of the maximum rate of explosion pressure rise Automotive LPG filling system for light and heavy duty vehicles Nozzle, test requirements and dimensions Potentially explosive atmospheres Explosion prevention and protection Determination of minimum ignition energy of dust/air mixtures Potentially explosive atmospheres Application of quality systems Determination of explosion characteristics of dust clouds Part 1: Determination of the maximum explosion pressure pmax of dust Clouds Determination of explosion characteristics of dust clouds Part 2: Determination of the maximum rate of explosion pressure rise (dp/dt)max of dust clouds Determination of explosion characteristics of dust clouds Part 3: Determination of the lower explosion limit LEL of dust clouds Determination of explosion characteristics of dust clouds Part 4: Determination of the limiting oxygen concentration LOC of dust Clouds Explosion suppression systems Explosion resistant equipment Dust explosion venting protective systems Cranes Power driven winches and hoists Part 1: Power driven winches Cranes Power driven winches and hoists Part 2: Power driven hoists Determination of the auto ignition temperature of gases and vapours EN :2004 Explosion prevention and protection in underground mines Protective systems Part 1: 2-bar explosion proof ventilation structure EN :2004/AC:2006 EN :2007 Explosion prevention and protection in underground mines Protective systems Part 2: Passive water trough barriers EN :2007 Explosion prevention and protection in underground mines Protective systems Part 4: Automatic extinguishing systems for road headers EN :2006 LPG equipment and accessories Construction and performance of LPG equipment for automotive filling stations Part 1: Dispensers EN 14681:2006 Safety of machinery Safety requirements for machinery and equipment for production of steel by electric arc furnaces EN 14756:2006 Determination of the limiting oxygen concentration (LOC) for flammable gases and vapours EN 14797:2006 EN 14973:2006 EN 14983:2007 EN 14986:2007 EN 14994:2007 EN 15188:2007 EN 15198:2007 EN 15233:2007 EN 50015:1998 EN 50017:1998 EN 50020:2002 EN 50104:2002 Explosion venting devices Conveyor belts for use in underground installations Electrical and flammability safety requirements EN 14973:2006/AC:2007 Explosion prevention and protection in underground mines Equipment and protective systems for firedamp drainage Design of fans working in potentially explosive atmospheres Gas explosion venting protective systems Determination of the spontaneous ignition behaviour of dust accumulations Methodology for the risk assessment of non-electrical equipment and components for intended use in potentially explosive atmospheres Methodology for functional safety assessment of protective systems for potentially explosive atmospheres Electrical apparatus for potentially explosive atmospheres Oil immersion o Electrical apparatus for potentially explosive atmospheres Powder filling q Electrical apparatus for potentially explosive atmospheres Intrinsic safety i Electrical apparatus for the detection and measurement of oxygen Performance requirements and test methods EN 50104:2002/A1:2204 Summarized Information Page 19 of 21

20 EN :1999 Specification for open path apparatus for the detection of combustible or toxic gases and vapours Part 1: General requirements and test methods EN :1999/A1:2004 EN :1999 Specification for open path apparatus for the detection of combustible or toxic gases and vapours Part 2: Performance requirements for apparatus for the detection of combustible gases EN :1998 Electrical apparatus for use in the presence of combustible dust Part 1-1: Electrical apparatus protected by enclosures Construction and testing EN :1998/A1:2002 EN :1998/AC:1999 EN :1998 Electrical apparatus for use in the presence of combustible dust Part 1-2: Electrical apparatus protected by enclosures Selection, installation and maintenance EN :1998/A1:2002 EN :1998/AC:1999 EN :1998 Electrical apparatus for use in the presence of combustible dust Part 2-1: Test methods Methods for determining the minimum ignition temperatures of dust EN 50284:1999 Special requirements for construction, test and marking of electrical apparatus of equipment Group II, Category 1 G EN 50303:2000 Group I, Category M1 equipment intended to remain functional in atmospheres endangered by firedamp and/or coal dust EN 50381:2004 Transportable ventilated rooms with or without an internal source of release EN 50381:2004/AC:2005 EN :2006 Part 0: General requirements (IEC :2004 (Modified) EN :2004 Part 1: Flameproof enclosures d (IEC :2003) EN :2004 Part 2: Pressurized enclosures p (IEC :2001) EN :2007 Explosive atmospheres Part 7: Equipment protection by increased safety e (IEC :2006) EN :2007 Explosive atmospheres Part 11: Equipment protection by intrinsic safety i (IEC :2006) EN :2005 EN :2004 EN :2007 EN :2006 EN :2004 EN :2000 EN :2000 EN :2000 EN :2000 EN :2000 EN :2002 Part 15: Construction, test and marking of type of protection n electrical apparatus (IEC :2005) Part 18: Construction, test and marking of type of protection encapsulation m electrical apparatus (IEC :2004) EN :2004/AC:2006 Explosive atmospheres Part 28: Protection of equipment and transmission systems using optical radiation (IEC :2006) Electrical apparatus for use in the presence of combustible dust Part 11: Protection by intrinsic safety id (IEC :2005) Electrical apparatus for use in the presence of combustible dust Part 18: Protection by encapsulation md (IEC :2004) EN :2004/AC:2006 Electrical apparatus for the detection and measurement of flammable gases Part 1: General requirements and test methods (IEC :1998 (Modified)), EN :2000/A11:2004 Electrical apparatus for the detection and measurement of flammable gases Part 2: Performance requirements for Group I apparatus indicating a volume fraction up to 5 % methane in air (IEC :1998 (Modified)) Electrical apparatus for the detection and measurement of flammable gases Part 3: Performance requirements for Group I apparatus indicating a volume fraction up to 100 % methane in air (IEC :1998 (Modified)) Electrical apparatus for the detection and measurement of flammable gases Part 4: Performance requirements for Group II apparatus indicating a volume fraction up to 100 % lower explosive limit (IEC :1998 (Modified)) Electrical apparatus for the detection and measurement of flammable gases Part 5: Performance requirements for Group II apparatus indicating a volume fraction up to 100 % gas (IEC :1998 (Modified)) Caplights for use in mines susceptible to firedamp Part 1: General requirements Construction and testing in relation to the risk of explosion (IEC :1999 (Modified)) Summarized Information Page 20 of 21

21 Standards for IECEx Scheme, for more information please see IEC IEC IEC IEC IEC IEC IEC IEC IEC IEC IEC IEC IEC IEC IEC IEC IEC IEC IEC IEC IEC IEC IEC IEC Part 0: General requirements Part 1: Construction and verification test of flameproof enclosures of electrical apparatus Part 2: Electrical apparatus, type of protection 'p' (Pressurization) Part 5: Powder filling "q" Part 6: Oil-immersion 'o' Part 7: Increased safety 'e' Explosive atmospheres Part 11: Equipment protection by intrinsic safety 'i' Part 15: Electrical apparatus with type of protection 'n' (Non-Sparking) Part 18: Encapsulation 'm' Part 25: Intrinsically safe systems Part 26: Construction, test and marking of Group II Zone 0 electrical apparatus Part 27: Fieldbus intrinsically safe concept (FISCO) Explosive atmospheres Part 28: Protection of equipment and transmission systems using optical radiation Electrical apparatus for use in the presence of combustible dust Part 0: General requirements Electrical apparatus for use in the presence of combustible dust Part 1: Electrical apparatus protected by enclosures Electrical apparatus for use in the presence of combustible dust Part 1: Electrical apparatus protected by enclosures Section 1: Specification for apparatus Electrical apparatus for use in the presence of combustible dust Part 4: Type of protection 'pd' Electrical apparatus for use in the presence of combustible dust Part 11: Protection by intrinsic safety 'id' Electrical apparatus for use in the presence of combustible dust Part 18: Protection by encapsulation 'md' Electrical apparatus for the detection and measurement of flammable gases Part 1: General requirements and test methods Electrical apparatus for the detection and measurement of flammable gases Part 2: Performance requirements for group I apparatus indicating a volume fraction up to 5% methane in air Electrical apparatus for the detection and measurement of flammable gases Part 3: Performance requirements for group I apparatus indicating a volume fraction up to 100% methane in air Electrical apparatus for the detection and measurement of flammable gases Part 4: Performance requirements for group II apparatus indicating up to 100% lower explosive limit Electrical apparatus for the detection and measurement of flammable gases Part 5: Performance requirements for group II apparatus indicating a volume fraction up to 100% gas IEC Caplights for use in mines susceptible to firedamp Part 1: General requirements - Construction and testing in relation to the risk of explosion IEC Electrical resistance trace heating - Part 1: General and testing requirements Summarized Information Page 21 of 21