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Ex Technology & Glossary

Ex Technology & Glossary. www.emmegiesse.com. Specific Ex components Electrical motors (hoisting, direction and long-travelling) Hoist and bridge control panels Limit switches (hoisting, direction and long-travelling) Load limit switch Push button box Terminal boxes Wall switch.

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Ex Technology & Glossary

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  1. Ex Technology & Glossary

  2. www.emmegiesse.com • Specific Ex components • Electrical motors (hoisting, direction and long-travelling) • Hoist and bridge control panels • Limit switches (hoisting, direction and long-travelling) • Load limit switch • Push button box • Terminal boxes • Wall switch

  3. www.emmegiesse.com Applicable directives from the 1st July 2003 Manufacturer : ATEX 94/09/EC or ATEX 100a User (installation) : ATEX 99/92/EC or ATEX 137a (England) or 118a (France)

  4. www.emmegiesse.com Typical marking 0081 Ex II 2 G EEx cde IIB T4 I : Mines II : Surface equipment Utilisation in hazardous areas Identification of the notify body CE marking

  5. www.emmegiesse.com Typical marking 0081 Ex II 2 G EEx cde IIB T4 Category 1, 2 or 3

  6. www.emmegiesse.com Classification of hazardous zonesGAZ (EN 11 127) ZONE 0 / Zone 20 Permanent presence (*) > 1000 h per year ZONE 1 / Zone 21 Occasional presence (*) 10 h < … < 1000 h per year ZONE 2 / Zone 22 Rare presence (*) 10 h per year < * under normal working conditions

  7. www.emmegiesse.com CATEGORY 1 CATEGORY 2 CATEGORY 3 SAFETY AREA

  8. www.emmegiesse.com CATEGORY 1 CATEGORY 2 CATEGORY 3 SAFETY AREA

  9. www.emmegiesse.com CATEGORY 1 CATEGORY 2 CATEGORY 3 SAFETY AREA

  10. www.emmegiesse.com ATEX CLASSIFICATION

  11. www.emmegiesse.com Typical marking 0081 Ex II 2 G EEx cde IIB T4 G : Gaz D : Dust Types of protection

  12. www.emmegiesse.com

  13. Explosive mixtures can penetrate inside of the equipment and ignite therein, but explosion will not be transmitted to the surrounding atmosphere : Flameproof enclosure d Powder filling q The electrical equipment incorporates a principle preventing from penetration and/or contact of explosive gas with internal flame sources : Pressurised apparatus p Oil immersion o Moulding m www.emmegiesse.com THE 4 BASIC PROTECTION PRINCIPLES

  14. The explosive mixtures can penetrate inside of the electric cubicle, but should not take fire. Electric arcs, sparks, and high temperature possibilities are eliminated : Increased safety e The explosive mixtures can penetrate inside of the electric cubicle, but should not take fire. The energy produced by the sparks or thermal effects is not sufficient to cause ignition : Intrinsic safety i www.emmegiesse.com THE 4 BASIC PROTECTION PRINCIPLES

  15. www.emmegiesse.com TYPE OF PROTECTION(used on our products) d: Flameproof enclosure (contactors, transformers etc...) e: Increased safety (terminal box) ’e’ ’d’

  16. www.emmegiesse.com ESSENTIAL SAFETY REQUIREMENTS • These cover a wide field, • fully detailed in Annex II of the new Directive. • - Integrated safety principle • - Specific conditions of inspection and maintenance • - Environmental conditions • - Marking • - Instructions for use • - Choice of materials

  17. www.emmegiesse.com • Design and manufacture • Potential ignition sources • > Sparks • > Flames • > Electric arcs • > High surface temperatures • > Acoustic energy • > Radiation: optical, electromagnetic or other sources • Risks caused by software • Explosive atmospheres caused by the presence of gas, • vapours, mist and air-dust mixtures

  18. www.emmegiesse.com The following risks have then been taken into account : Contact of the load chains on the load, the return wheels and the chain guide Contact of the wire rope on the drum and the pulleys Activation of the switches (limit or overload devices) Rope guide Wheels of the trolleys Load hook Belt Wheels in polyamide of the trolleys for the festoons Hand chain Brake pinion on the hand chain blocks Torque limitor on the chain hoists

  19. www.emmegiesse.com All the materials have been communicated to INERIS. The standard EN 13463-5 – ‘c’ type of protection – specifies that there is no risk to have a spark when the speeds are inferior to 1m/s. Electro-static tests have been done on the belts. Heating tests have been done on the torque limitors.

  20. www.emmegiesse.com Conclusion : Except the hand chain which has to be in stainless steel, no specific material is required (no bronze). We have now an attestation number delivered by INERIS.

  21. www.emmegiesse.com Typical marking 0081 Ex II 2 G EEx cde IIB T4 Gaz group Temperature class

  22. www.emmegiesse.com GAZ GROUP

  23. www.emmegiesse.com TEMPERATURE CLASS

  24. www.emmegiesse.com

  25. www.emmegiesse.com Group IIB

  26. www.emmegiesse.com Group IIC

  27. www.emmegiesse.com

  28. www.emmegiesse.com DUST ATMOSPHERES • Zone 20 & 21 : • IP6X • Zone 22 : • - Conductive dust : IP6X • - Non conductive dust : IP5X • T° max < min (T° of ignition for layer of 5 mm - 75°K , • 2/3 * T° of ignition in cloud)

  29. www.emmegiesse.com Procedures for assessment of conformity (various possible cases)

  30. www.emmegiesse.com STRENGTHENED OPTION - Bronze trolley wheels and anti-drop brackets devices - Bronze load / return wheel - Bronze coated hook

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