BIRA-WAT Symposium 20060316 Final

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How to Run General Purpose Analyzers in Potentially Explosive Atmospheres (Considerations are Limited to EEx II G) Norbert Zeug BARTEC BENKE GmbH D-21465 Reinbek BIRA – WAT Symposium Mortsel, March 16th, 2006 Legal Regulations ATEX Harmonised General Conditions in Europe Explosion Protection Directive 94/9/EC (for Manufacturers) Conformity Assessment Potential ignition source (electrical and non electrical) during normal operation, expected or rare unit malfunction: Directive 1999/92/EC (fo
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  How to Run General Purpose Analyzersin Potentially Explosive Atmospheres (Considerations are Limited to EEx II G) Norbert ZeugBARTEC BENKE GmbHD-21465 ReinbekBIRA –WAT SymposiumMortsel, March 16 th , 2006  Legal Regulations ATEX Harmonised General Conditions in Europe Explosion ProtectionDirective 94/9/EC (for Manufacturers) Conformity Assessment Potential ignition source(electrical and non electrical) duringnormal operation, expected or rareunit malfunction: Unit Groups, -categories Directive 1999/92/EC (for Operators) Assessment of Explosion Risk temporal behaviour of flammablecomponents (Gas and Dust)classification of hazardous areas Zones  Basic Questions Area Classification Zone 1 explosive atmosphere is likely to occur in normal operation occasionally Zone 2 explosive atmosphere is not likely to occur in normal operation but, if it doesoccur, will persist for a short period only Temperature Class T1450°CT2300°CT3200°CT4135°CT5100°CT685°C Explosion Sub Groups A(examples: methane, ethane, ammonia, gasoline,…)B (B+H 2 )(examples: ethylene, ethylene oxide, hydrogen sulphide,..)Chydrogen, acetylene, carbon disulphide  Planning Analyser Systems What can we do, if general purpose analysersshould/must be used?Two possible approaches Approach 1following Directive 94/9/ECApproach 2following Directive 1999/92/EC
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