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Bock Atex Compressors

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Semi-hermetic GEA Bock Compressors used in explosion-risk environments. Differences to standard compressors, information about the current program, general information about ATEX , general measures …

Semi-hermetic GEA Bock Compressors used in explosion-risk environments. Differences to standard compressors, information about the current program, general information about ATEX , general measures for explosion-risk areas, information about zone allocations and obligations of the machine operator are presented.

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  • 1. Bock ATEX CompressorsSemi-hermetic Compressors in Explosion-riskEnvironmentsGEA Refrigeration Technologies
  • 2. Differences to standard compressors Bock ATEX Compressors GEA Refrigeration Technologies
  • 3. The current program …… 6 model sizes with 20 capacity stages from 5,4 to 122,4 m³/h (50 Hz)DISPLACEMENT EX-HG12P EX-HG22P EX-HG34P EX-HG4 EX-HG5 EX-HG6 Bock ATEX Compressors GEA Refrigeration Technologies
  • 4. Type key – ATEX Compressor Bock ATEX Compressors GEA Refrigeration Technologies
  • 5. General information about ATEX(french: ATmosphère EXplosibles) Explosion-risk in nearly all process engineering systems ATEX - Creates uniform During manufacturing, Static discharge, electrical minimum standards processing, transport and equalising currents and - Improves the safety and storage: flammable gases, shock waves can trigger health protection of workers vapours and mist are explosions - Legal requirement generated since 2003 Bock ATEX Compressors GEA Refrigeration Technologies
  • 6. General measures for explosion-risk areas Explosion protection document Adequate Instructions Written work permit (in the case of dangerous work) Warning singns Probibition of ignition sources Tests and inspections Bock ATEX Compressors GEA Refrigeration Technologies
  • 7. What does this mean for refrigerating machines? Refrigerants are flammable Refrigeration- and air-conditioning systems Particular safety measures Compressors (with refrigerants of have to be taken the safety group A2 and A3) An allocation of zones according to EC directive 1999/92/EC has to be made Bock ATEX Compressors GEA Refrigeration Technologies
  • 8. Zone allocation as an obligation of themachine operator Zone 0: The explosive atmosphere ispresent constantly, for long periods of time or frequently Zone 1: The explosive atmosphere isoccasionally present during normal operation Zone 2: The explosive atmosphere is notpresent during normal operation, or only briefly Bock ATEX Compressors GEA Refrigeration Technologies
  • 9. Other obligations of the machine operator• All components of a refrigeration plant must be examined (compressor, evaporator, condenser, valves, sensors, …)• Declaration of the important material properties pertinent to explosion protection• Use of only correspondingly marked and identified components with the necessary documentation• Heeding to installation standards and instructions• Consideration of interactions with other machinery in the system and with the environment• … Bock ATEX Compressors GEA Refrigeration Technologies