ATEX GUIDE. A short introduction to ATEX Terminology. Equipment for use in flammable atmospheres. Directive 94/9/EC

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1 Quick Introduction to TÛV Denmark TÜV Denmark - is a part of the TÜV NORD Group a global Organisation f Certification and Inspection of: Quality Management Systems, Products, Processes and Qualification of Persons. We got me than 130 years of experience within the area Quality and Safety. Represented in me than 45 countries with a total of employees. Examples of Services: Food Safety: HACCP / BRC e.g. DS 3027 EUREPGAP food safety - GAP - Good Agricultural Practice Quality Management Systems: ISO 9000, ISO 9001: 2000, Functional Safety: IEC Automobile: ISO/TS 16949, QS 9000, TE 9000 VDA 6.1, 6.2, 6.4, Medical products - Quality: EN 46001/2 ISO /13488 Environment: ISO 14001, EC Regulations 1836/93 (EMAS) Type approval of Medical Products NB Directive 93/42/EC & 98/79/EC IT Safety ISO (BS 7799), ISO/IEC 12199, ISO 9241 ATEX Flammable Atmospheres Directive 94/9/EC Notified Body Branch specified third part Audits Pressure equipment Notified Body to Directive 97/23/EC ATEX GUIDE A sht introduction to ATEX Terminology Equipment f use in flammable atmospheres Directive 94/9/EC TÜV Danmark Telephone Diplomvej bygning 377 Telefax: DK-2800 Lyngby Dir. Phone Denmark Internet: TÜV NORD: Better. Closer. Me. info@tuvdanmark.dk

2 What is Ex-equipment / areas? Electrical non-electrical equipment used in an area where there is a risk of presence of a flammable atmosphere (gas dust) - are popular called Exequipment equipment f use in Hazardous Areas Ex-equipment are typically used in places like: The chemical industry Oil refineries Off she installations (platfms) Filling stations Tunnels/ sewers/ drains Milling industry/ printing-house / painting industry Farmer s installations Mining industry Scope of the ATEX Directive 94/9/EC The Directive covers Electrical and Non-electrical equipment! Equipment : Machines, apparatus, instruments, fixed mobile devices, control components and so on. Protective systems : e.g. equipment that can stop delay an explosion Components : Essential parts f the safety but with no autonomous function. Safety control and regulation equipment intended to be used outside the Ex-area - but with a function that secures the safety in the Ex-area. Frequently used Standards - (not complete) Electrical / Non-Electrical Installation Quality Requirements etc. Protection Principles IEC Countries Europe General Requirements IEC EN Oil Immersion o IEC EN Pressurized Apparatus p IEC EN Powder Filling q IEC EN Flameproof Enclosure d IEC EN Encreased Safety e IEC EN Intrinsic Safety i IEC EN Encapsulation m IEC EN Field Bus Concept (FISCO) IEC / TC Laser Optics/radiation IEC Intrinsically Safe Systems IEC EN Gas Detects EN Zone 0 Standard IEC EN Zone 2 Standards Type n Protection IEC EN Dust Standards Encapsulation in dust md IEC EN Protection by enclosure td IEC EN Construction & test EN Installation EN Non-Electrical Basic concepts and methodology EN Basic Requirements EN , - 5 engines EN Petrol filling stations EN ATEX Quality Requirements EN Installations IEC EN Good places to find Ex-infmation / current Harmonized Standards:

3 Example of Zone Classification (Filling Station) Exclusions from the ATEX Scope Medical devices intended f use in medical environment. Equipment and protective systems intended to be used in relation with unstable chemical substances. Equipment intended to be used in domestic and non-commercial environments where flammable atmosphere is only a result of accidents. Personal protective equipment covered by Directive 89/686/EEC. Seagoing vessels and mobile offshe units together with equipment on board such units. Means of transpt i.e. vehicles, trailers, planes used f transptation. (Vehicles used in potential explosive atmosphere are not excluded). Remark: In Zone 0 Ex-equipment must be designed f Categy 1 use In Zone 1 Ex equipment must be designed f Categy 2 use In Zone 2 Ex equipment must be designed f Categy 3 use IP Classification s Ingress Protection to EN Definition 1 st IP code index Code Class Code Definition 2 nd code index No protection 0 0 No protection Objects greater than D: 50 mm 1 Example: 1 Vertically falling water drops Objects greater than D: 12,5 mm to 90 0 vertically falling water Objects greater than D: 2,5 mm 3 IP Spraying water 60 0 from vertical Splashing water from any Objects greater than D: 1 mm 4 4 direction Dust protected 5 5 Water jets from any direction Dust-tight 6 6 Powerful jets from any direction 7 Protection at immersion (D = Diameter) Protected at continuous 8 immersion 10 Essential Health and Safety Requirements Annex II of Directive 94/9/EC Principle of integrated safety Specific conditions of inspection and maintenance Environmental conditions Marking Instructions f use Choice of materials Design and manufacture Risk caused by software Ex atmospheres caused by the presence of gas, vapours and mist. Explosive atmospheres caused by presence of air-dust mixtures. Potential ignition sources: Sparks, flames, electric arcs High surface temperatures Acoustic energy, radiation: optical, Electromagnetic other sources 3

4 Classification by Group and Categy accding to intended use - Surface industry (not mining) Classification of gases into Gas Groups Area Equipment (surface industry) Categy of Equipment to ATEX Definitions 1 Presence Duration of Explosive Atmosphere Continuous presence Long Periods Frequent 2 Likely to occur Level of Protection Faults to Allow f Very high level of protection: 2 types of protection 2 independent faults High level of protection: 1 type of protection. Habitual frequent malfunction Comparison with Present Practice Zone 0 (gas) Zone 20 (dust) Zone 1 (Gas Zone 21 (dust) Place of use Mines susceptible to firedamp Surface industries Group: CENELEC / IEC Class and Group: USA and Canada Representative gas: I Gaseous mines Methane IIA Class I Group D Propane IIB Class I Group C Ethylene IIC Class I Group B Class I Group A Me sensitive - less energy to ignite gas Hydrogen & Acetylene IIA, IIB IIC: These Groups are linked to how much energy that s necessary to ignite the gas. Please Remark that the Group A, B C marking is only relevant f the Exprotection principles Flameproof Enclosure d Intrinsically Safety i 3 Unlikely to occur Present f a sht period Nmal protection: Required level of protection. Zone 2 (gas) Zone 22 (dust) F these protection principles the Ex-protection technology is directly linked to the sensitivity of the surrounding gas this is not the case f the other Exprotection principles. Ex-Certification f the American Market Inflammable substances f all 3 Categies can be Gas, Vapours, Mist, Dust TÜV Denmark offers certification to the Nth American market f Zone 0, 1 and 2 and Class I, II and III, Division 1 and Division 2. This service is done in cooperation with our American partner ENTELA which is an OSHA approved NRTL (National Recognized Testing Labaty). 4 9

5 Marking Plate Minimum requirements (example) Confmity assessment procedure - Equipment-Categy 1 and M1 Explo International GmbH Mozart Strasse 48, Blomberg Load Cell Type: 1709Ex, series II 1G, RWTÜV-04-ATEX-1234 EEx ia IIC T4 Ui: 28 V, Ii: 98 ma Ci.: 10 nf, Li: 0 mh, Pi: 0,85 W (Zone 0) Group I and II - M1 (mines) and 1 (surface) CE Type Examination Annex III EC-Type Examination Certificate CE Unit Inspection Annex IX Temperature Classes (T-class) Maximum Surface temperature of equipment taking the maximum Ambient temperature into T1 T2 T3 T4 T5 T6 450 C 300 C 200 C 135 C 100 C 85 C account. To ensure Ex-equipment can be safely used, the Gas Group must be known and the Temperature Class must be compared with the spontaneous temperature of the present flammable atmospheres. and Production Quality Assurance by NB Annex IV ISO EN Production Quality Assurance Notification Product Inspection Annex V NB: Notified Body 8 5

6 Confmity assessment procedure, equipment-categy 2 and M2 Confmity assessment procedure, equipment-categy 3 (Zone 1) Group I and II - M2 (mines) and 2 (surface) (Zone 2) - 3 (surface) F electrical equipment internal combustion engines F nonelectrical equipment CE Unit Inspection by NB ANNEX IX CE Unit Inspection ANNEX IX Internal Production Inspection Annex VIII CE Type Examination ANNEX III and Product Quality Assurance by NB ANNEX VII ISO EN Internal Production Inspection ANNEX VIII + Stage of technical file at NB Confmity to type Test under responsibility of NB ANNEX VI ISO Marking of equipment to 94/9/EC In addition to the required CE marking, equipment must carry specific marking f potentially explosives atmospheres: RWTÜV Notified Body Number 0044 II 2 G and / D Equipment Group: surface industry Gas / Dust NB: Notified Body European Commission mark f Ex-equipment Equipment categy 2 F zone 1 use 6 7

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