Short definition
The ATEX directives regulate explosion protection in the European Union: ATEX 114 (2014/34/EU) defines requirements for equipment and protective systems for potentially explosive atmospheres, ATEX 153 (1999/92/EC) defines minimum requirements for operators. They classify zones according to the probability of explosion and define equipment categories (1-3) and types of protection. In membrane filtration systems with flammable solvents, gases or dusts, ATEX-compliant electrical systems, sensors and automation components are mandatory.
Control concept
ATEX 114 requires manufacturers to have equipment assessed for conformity by notified bodies, EC type examination and CE marking. Equipment is classified according to type of protection (Ex d, Ex e, Ex i, Ex p) and EPL (Equipment Protection Level). ATEX 153 obliges operators to classify zones (zone 0/1/2 for gases, 20/21/22 for dusts), prepare explosion protection documents and take organizational measures. Integration in membrane filtration systems requires Ex-certified PLCs, sensors and field devices as well as potential equalizing earthing.
Areas of application
ATEX directives are mandatory for membrane filtration systems in the chemical industry, pharmaceutical industry and wherever flammable media are processed. They protect against explosions caused by electrostatic discharges, hot surfaces or electrical sparks. The zone classification determines the required protective measures and equipment categories. Explosion protection documents are an official operating requirement.
Typical areas of application:
- Membrane filtration of flammable solvents (zone 1/2)
- Filtration in paint shops and chemical synthesis
- Dust explosion hazard during powder handling
- Ex-protected Sensors in gas atmospheres
- ATEX-compliant enclosures with pressurized enclosure
Summary
ATEX conformity is a basic legal requirement for operating and placing explosion-protected systems on the market in the EU. It prevents catastrophic explosions, protects lives and fulfills legal obligations. For system manufacturers, it means market access, legal certainty and the need to integrate certified components into membrane filtration systems with explosion hazards.
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