ATEX certification is an official certification document that verifies the safety compliance of equipment used in explosive gas or dust environments in industrial facilities. It represents one of Europe’s most critical safety standards. But what exactly does ATEX certification mean, in which sectors is it mandatory, and how does the legal framework function?

What is ATEX? ATEX is an acronym derived from the French phrase “ATmosphères EXplosibles” (Explosive Atmospheres). It covers two separate EU directives: ATEX 2014/34/EU regulates the design and manufacturing requirements for devices and protection systems to be used in explosive atmospheres, while ATEX 1999/92/EC defines the minimum requirements for protecting workers operating in such environments.

An ATEX certificate is an independent test document confirming that an electrical or mechanical device can be used safely in environments that may contain explosive gases, vapors, mists, or dust.

Which Equipment Requires ATEX Certification? All electrical and mechanical equipment used within or near an explosive atmosphere requires ATEX certification. This includes motors and generators, pumps and compressors, sensors and detectors (gas, flame, smoke), control panels and junction boxes, lighting fixtures, material handling equipment (conveyors, forklifts), and piping components.

ATEX Zone Classification: Gas and Dust Environments

Gas Explosive Atmospheres

• Zone 0: Areas where an explosive gas/air mixture is present continuously or for long periods (e.g., inside storage tanks).

• Zone 1: Areas where an explosive atmosphere is likely to occur occasionally in normal operation (e.g., pump rooms).

• Zone 2: Areas where an explosive atmosphere is not expected to occur in normal operation, but if it does, it persists for a short period only.

Dust Explosive Atmospheres

• Zone 20: Areas where a combustible dust cloud is present continuously or for long periods (e.g., inside silos and mills).

• Zone 21: Areas where a dust cloud is likely to occur occasionally in normal operation (e.g., filling stations, under-sieve areas).

• Zone 22: Areas where a dust cloud is not expected to occur, but accumulations may ignite.

ATEX Equipment Categories Equipment under ATEX certification is divided into categories that determine which zone they can be used in. Category 1G/1D equipment offers the highest level of safety and can be used in Zones 0/20. Category 2G/2D is suitable for Zones 1/21, and Category 3G/3D is appropriate for Zones 2/22. “G” stands for gas environments, while “D” represents dust.

How to Obtain ATEX Certification? Manufacturers seeking ATEX certification must follow these steps: The product design is carried out in accordance with ATEX standards. An application is made to an accredited Notified Body for type examination. Upon successful testing, an EC Type Examination Certificate is issued. The product then receives the EU conformity mark and ATEX marking, followed by a factory production control system to audit the manufacturing process.

How to Read ATEX Marking? ATEX marking follows a specific format, and reading it correctly is critical for equipment selection. For example, an marking such as Ex II 2G IIB T4 Gb is read as follows:

• Ex: Explosion protection.

• II: Group 2 (surface industries, non-mining).

• 2G: Category 2, gas environment.

• IIB: Gas group (e.g., propane/ethylene).

• T4: Maximum surface temperature of 135°C.

ATEX Implementation in Türkiye In Türkiye, the ATEX directive is implemented through the TS EN 60079 series of standards. The use of ATEX-certified equipment is mandatory in areas with explosion hazards, including mines. Non-compliance during inspections by labor inspectors can lead to severe penalties.

Risks of Using Non-ATEX Equipment Using non-certified equipment is not just a legal violation; it is a serious safety risk that endangers lives. A standard piece of equipment that malfunctions or generates a spark can cause a catastrophic accident in an explosive atmosphere. Furthermore, insurance companies may refuse to pay claims in cases of ATEX non-compliance.

ELVA and ATEX-Compliant Industrial Solutions At ELVA Engineering, we provide ATEX-certified fire detection, gas detection, spark extinguishing, and explosion suppression systems. Our products from international supply partners are certified to be used safely in all risk areas from Zone 0 to Zone 2. Contact our team for an ATEX compliance assessment of your facility.