EAC TR CU 012 – Ex-proof (EAC ATEX) Certification for Explosion Hazard Areas

Technical Regulation TR CU 012 of the Customs Union (now EAEU) – Safety of Equipment in Explosion Hazardous Zones

The Technical Regulation TR CU 012 “On the safety of equipment for operation in explosion hazard areas” was adopted by the Customs Union in 2011 and has been mandatory since 15 February 2013. Today, it continues to apply within the Eurasian Economic Union (EAEU).

The aim of TR CU 012 is to ensure that equipment and devices used in explosive gas or dust atmospheres do not present an ignition or explosion hazard. The so-called EAC ATEX Certification is a specific part of the general EAC Certification and is mandatory for placing Ex-proof equipment on the market and for its legal operation within the EAEU member states.

The regulation covers electrical equipment, Ex-components as well as non-electrical equipment intended for use in explosive zones. Certification can be carried out both for complex production facilities with numerous Ex-components and for individual elements of control and protection systems (e.g. signal lamps, limit switches), sensors, measuring instruments and many other devices.

An essential element is the Ex marking, which serves as the official identification mark for explosion-proof equipment. In addition, explosion protection devices provided by the manufacturer must be documented in the Technical File as required by TR CU 012.

Scope of the TR CU 012/2011 (Explosion Protection)

TR CU 012/2011 contains explosion-proof equipment, which is divided into the following classes:

groups (areas of application);
temperature classes;
explosion protection level;
explosion-endangered areas;
types of explosion protection.

The Technical Regulations TR CU 012/2011 do not contain:

equipment the operation of which creates a risk of explosion solely through the presence of explosive substances and unstable chemical compounds;
equipment for domestic and non-industrial use under conditions where an explosive atmosphere is created by an unforeseen emission of combustible gas;
medical products;
sea vessels, inland waterway vessels and ships engaged in mixed voyages (river-sea vessels), mobile offshore platforms and drilling platforms for work in sea and inland waters, other floating craft and machinery and equipment used on such craft;
body preservative;
vehicles used for public road transport and capable of carrying persons and goods by air, land, rail or sea.

Contents of the TR CU 012/2011 (Explosion Protection)

TR CU 012/2011:

their safety requirements, in particular with regard to their design;
labelling requirements;
binding requirements for technical documentation;
regulations for the market movement of equipment for potentially explosive atmospheres;
procedure for confirmation of conformity (certification) of equipment for potentially explosive atmospheres.

TR CU 012 Technical File – Required Documentation

For approval of equipment under TR CU 012/2011 “On the Safety of Equipment for Use in Explosive Atmospheres”, the manufacturer is required to prepare comprehensive technical documentation (Technical File). This Technical File must include, among others:

Name and/or designation of the equipment (type, brand, model) including safety-related parameters and characteristics;
Intended purpose of the equipment;
Instructions for installation, assembly, adjustment or regulation;
Guidance on safe operation, including commissioning, intended use, maintenance, repairs, inspections, protective measures, as well as transport and storage conditions;
Specified service life and/or resource;
List of possible critical failures or operator errors leading to hazardous situations and preventive actions;
Parameters of limiting operational states;
Measures to be taken in case of equipment malfunction;
Information on necessary supplementary components (e.g. cable glands);
Requirements for maintaining technical characteristics ensuring explosion safety;
Packaging, conservation, transport and storage requirements, including deadlines for re-inspections or replacement of parts;
Requirements for equipment disposal;
Storage, transport and disposal rules (if applicable);
Qualification requirements for personnel;
Manufacturer’s details (name, address, contact information);
Authorized representative, importer or agent details (name, address, contact information);
Date of manufacture.

The technical documentation must be prepared in paper form, and may additionally be provided in electronic format.

The Technical File is essential for confirming compliance under TR CU 012 and serves as the foundation for EAC Certification of equipment intended for use in explosive atmospheres.

For a complete overview, download our checklist of required documents for the TR CU 012 Technical File (PDF, EN/DE/RU).

Our services

The experts at EasyGOST will quickly and reliably determine whether your equipment falls under the scope of the Technical Regulation TR CU 012 (EAC ATEX / Ex-proof).

In cooperation with leading laboratories specialising in explosion-proof equipment, we manage and support the complete process of your EAC TR CU 012 Certification. Our services include:

Carrying out required laboratory tests (if necessary)
Selecting the appropriate certification scheme under TR CU 012
Assessing the level of explosion protection of your equipment

Upon successful conformity assessment according to TR CU 012, you will receive an official EAC Certificate, granting your products access to the EAEU market.

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