TR TS 012/2011 PDF

Full title and description

TR TS 012/2011 — Technical Regulation of the Customs Union (TR CU 012/2011) "On the safety of equipment for work in explosive atmospheres". Establishes mandatory safety and conformity requirements for electrical and non-electrical equipment, including Ex-components, intended for use in explosive (gas and dust) atmospheres within the Customs Union / Eurasian Economic Area.

Abstract

TR TS 012/2011 defines explosion-safety requirements, product identification and marking (Ex marking), classification of equipment by groups/subgroups and protection levels, conformity assessment procedures (EAC/Ex certification) and market surveillance rules to ensure safe circulation of explosion‑protected equipment across member states of the Customs Union / EAEU. The regulation was adopted in 2011 and establishes a single technical framework for equipment used in hazardous (explosive) atmospheres.

General information

• Status: Adopted technical regulation in force (subject to later amendments and updates—check official register for the latest texts and amendments).
• Publication date: Adopted December 18, 2011; entered into force February 15, 2013.
• Publisher: Commission / authorities of the Customs Union (Eurasian Economic Commission / Customs Union Commission — TR CU framework).
• ICS / categories: Primary: 29.260.20 (Electrical apparatus for explosive atmospheres). Related classifications include sectors for industrial safety and hazardous-area equipment.
• Edition / version: Original designation TR CU (TR TS) 012/2011 — original technical regulation text (2011); later amendments and drafts have been published (see official amendment records).
• Number of pages: Varies by publisher/translation; typical full official text and annexes are on the order of several dozen pages (commonly ~40–60 pages depending on format and annexes).

Scope

Applies to electrical equipment (including Ex-components) and non-electrical equipment intended for operation in potentially explosive atmospheres (gaseous and dust environments). The regulation excludes certain categories (for example specified medical devices, some marine and shipboard equipment, some personal protective equipment and a few other narrowly defined items) as set out in Article 1 of the text. Its purpose is to protect life and property and to harmonize market circulation and conformity assessment within the Customs Union / EAEU.

Key topics and requirements

• Explosion-safety design requirements to prevent formation of explosive atmospheres and to prevent ignition sources (design, materials, temperature classes, enclosure integrity).
• Classification of equipment into Groups I, II and III (mining / surface gas atmospheres / dust atmospheres) with subgroups (IIA, IIB, IIC; IIIA, IIIB, IIIC) and assignment of protection levels.
• Types of explosion protection and protective measures (intrinsic safety, flameproof enclosure, increased safety, pressurization/purging, dust protection, etc.).
• Mandatory conformity assessment procedures and certification (EAC/Ex certificates or declarations of conformity) for placing equipment on the market in member states.
• Explosion (Ex) marking and special explosion-safety sign requirements (labeling and minimum dimension guidance for the Ex sign).
• Requirements for manufacturer technical documentation, instructions, testing, emergency/protective device behaviour, production-site analysis for serialized products and market surveillance.

Typical use and users

Used by manufacturers and designers of industrial equipment (motors, junction boxes, sensors, control gear, instrumentation, cable systems), conformity assessment bodies and testing laboratories, importers and distributors placing equipment on the EAEU market, plant operators and safety engineers responsible for selecting and maintaining equipment for hazardous areas, and national regulators enforcing market surveillance.

Related standards

TR TS 012/2011 is implemented alongside international and regional standards that define test methods and protection techniques — notably the IEC 60079 series (explosive atmospheres) and related GOST/EN/ISO documents. It aligns conceptually with ATEX/EN frameworks (EU) but uses EAC conformity routes. Other Customs Union technical regulations (TR CU series) apply where relevant (for example low-voltage equipment, EMC, pressure equipment) and may be used together with TR CU 012/2011.

Keywords

explosive atmospheres; Ex marking; EAC; TR CU 012/2011; TR TS 012/2011; explosion protection; Ex-components; hazardous area; mining safety; conformity assessment; IEC 60079; ATEX (related).

FAQ

Q: What is this standard?

A: TR TS 012/2011 (also referenced as TR CU 012/2011) is the Customs Union technical regulation that defines mandatory safety, marking and conformity requirements for equipment intended for use in explosive atmospheres within member states of the Customs Union / EAEU.

Q: What does it cover?

A: It covers electrical and non-electrical equipment and Ex-components for use in gas and dust explosive atmospheres, specifying design, protection types, classification, documentation, marking and conformity assessment (certification/declaration) required to place products on the market. It also includes market circulation and surveillance rules and lists exclusions.

Q: Who typically uses it?

A: Manufacturers, testing laboratories, notified/certification bodies, importers/distributors, plant safety and maintenance teams, and regulatory authorities across the EAEU member states use the regulation for design, certification and market clearance of explosion‑protected equipment.

Q: Is it current or superseded?

A: The original regulation was adopted in December 2011 and entered into force on February 15, 2013. The TR CU 012/2011 framework remains the reference document, though amendments and draft updates have been published since—users should consult the official EAEU / national registers for the current consolidated text and any amendments before certification or market placement.

Q: Is it part of a series?

A: Yes — it is part of the TR CU / TR TS series of Customs Union / EAEU technical regulations (the set of harmonized regulations covering product safety, e.g., low-voltage, EMC, machinery, lifts, etc.). It is commonly used in conjunction with international standards (IEC 60079 series) and national GOST variants for testing and detailed requirements.

Q: What are the key keywords?

A: Explosion-proof, Ex, Ex-component, hazardous area, EAC certification, TR CU 012/2011, conformity assessment, explosion protection level, Group I/II/III, IEC 60079, ATEX (related).