Explosion protection is a set of measures aimed at preventing explosive situations or minimizing their destructive consequences. The main goal is to ensure the safety of people, equipment, and the environment when working with substances that can ignite or explode (e.g., combustible gases, vapors, dust).
Ensuring explosion safety is a priority task, achieved through strict compliance with a set of regulatory documents. These explosion protection standards, developed at both the national and international levels, establish requirements for the design, manufacture, installation, and operation of equipment, as well as for the classification of explosive areas.
Compliance with explosion protection standards is mandatory for several reasons:
- Human safety. Regulations are developed based on years of experience and scientific research aimed at preventing injuries and deaths in explosions.
- Prevention of material damage. Explosions can lead to the complete destruction of production facilities, expensive equipment, and significant financial losses.
- Production continuity. Compliance with standards helps to avoid accidents that can lead to prolonged production stoppages.
- Legal liability. Failure to comply with established standards is a violation of the law.
- Company reputation. Incidents involving safety violations damage the company's reputation.
Management (director, heads of structural divisions, owners) is responsible for compliance with regulatory documents and is required to establish an occupational health and safety management system. A designated specialist (occupational health and safety engineer) is responsible for organizing and monitoring explosion protection measures, training, and risk analysis. Department heads are responsible for compliance with standards in their areas of responsibility, while engineering and technical personnel and workers are responsible for the proper operation of equipment and compliance with instructions.
Violation of explosion safety regulations has serious consequences. Fires and explosions lead to material losses due to damage, as well as to the forced suspension of production activities by decision of the regulatory authorities. In addition, there are large fines, and those responsible may be held administratively or criminally liable.
International explosion protection standards
International explosion protection standards cover the entire life cycle of equipment—from risk assessment and design to operation and maintenance—forming uniform, globally recognized rules aimed at preventing explosions and protecting life and property. In our review, we will briefly discuss which standards are in force, which industries and processes they apply to, and what equipment they affect.
ATEX 114 (Directive 2014/34/EU)
|
Scope |
Requirements for manufacturers for the design and manufacture of equipment intended for use in potentially explosive atmospheres. |
|
Industries |
All industries where there is a risk of explosion. |
|
Key processes/equipment |
Equipment of groups I (mines) and II/III (above-ground gas/dust zones), all types of explosion protection (Ex d, Ex e, Ex i, etc.), autonomous protection systems (explosion suppressors, ventilation panels), components, etc. |
ATEX 137 (Directive 1999/92/EU)
|
Scope |
Establishes minimum requirements for the protection of the health and safety of workers exposed to the risk of explosive atmospheres in the workplace. |
|
Industries |
All, except for special cases (e.g., mining is regulated by other directives). |
|
Key processes/equipment |
All work areas where explosive mixtures of gases, vapors, mists, or dusts may form. Covers process plants, flammable liquid storage facilities, flour milling and woodworking operations, silos, etc. |
IEC 60079 series of standards – «Explosive atmospheres» – parts 0–…–33
|
Scope |
All aspects: from the design of Ex equipment to its installation and repair. |
|
Industries |
All industries where there is a risk of explosion. |
|
Key processes/equipment |
Ex electrical equipment and certain types of non-electrical equipment. |
ISO/IEC 80079 series of standards
|
Scope |
Characteristics of explosive atmospheres, non-electrical equipment and its life cycle after commissioning (maintenance, repair). |
|
Industries |
All industries where there is a risk of explosion. |
|
Key processes/equipment |
Non-electrical equipment, e.g., gearboxes, compressors, conveyors, burners, etc. |
IECEx Scheme (IEC System for Certification to Standards for Explosive Atmospheres)
|
Scope |
Certification of equipment, repair services, and personnel in accordance with international standards (ATEX, IEC, ISO, NFPA). |
|
Industries |
All industries where there is a risk of explosion. |
|
Key processes/equipment |
All types of equipment with protection in accordance with IEC 60079/80079 standards. |
EN standards (harmonized)
|
Scope |
Establish technical requirements for equipment, its components, and systems used in potentially explosive atmospheres. |
|
Industries |
All industries where there is a risk of explosion. |
|
Key processes/equipment |
Explosion-proof electrical and non-electrical equipment. |
NFPA standards
|
Scope |
Standards used to ensure safety, covering a wide range of risks, from fires to combustible dust and gas explosions. |
|
Industries |
All industries where there is a risk of fire or explosion. |
|
Key processes/equipment |
Building design and fire alarm/extinguishing systems (NFPA 101, NFPA 72, NFPA 13), safety in handling combustible liquids and gases (NFPA 30), explosion protection of electrical equipment (NFPA 70), operation of firefighting equipment. |
Key differences and compliance
Ensuring safety in the presence of explosive atmospheres is a task that requires the use of standardized approaches. Understanding which regulatory documents on explosion protection are accepted worldwide is important for ensuring the safety of production processes, facility design, and the protection of personnel working in explosive atmospheres.
|
Document |
Countries/Regions where it is valid (or on which national standards are based) |
|
IECEx (International Electrotechnical Commission System for Certification to Standards Relating to Equipment for Use in Explosive Atmospheres) |
International – widely recognized and applied in more than 80 countries around the world (including EU countries, the US, Canada, Australia, China, Korea, Japan, and Russia) |
|
ATEX Directive (Directive 2014/34/EU) |
European Union countries |
|
EN ISO/IEC 60079 series (e.g., EN ISO/IEC 60079-0, EN ISO/IEC 60079-10-2, EN ISO/IEC 60079-11, etc.) |
European Union countries and many others that have adopted ISO/IEC standards as national standards (e.g., the United Kingdom, Switzerland, Norway, as well as countries that harmonize their legislation with the EU) |
|
TR CU "On the safety of equipment for use in potentially explosive atmospheres" (TR CU 012/2011) |
Countries of the Eurasian Economic Union |
|
NFPA Standards (National Fire Protection Association) – e.g., NFPA 70 (National Electrical Code) |
The USA |
Some countries also have local documents in force, such as BS Standards (the United Kingdom), DIN Standards (Germany), GB Standards (China), etc.
What is the difference between ATEX/EN, IEC, NFPA, and OSHA regulations?
The ATEX/EN, IEC, NFPA, and OSHA regulations represent different approaches to safety and, accordingly, differ in their origin, scope of application, legal force, and regulatory approaches.
|
Comparison criteria |
ATEX/EN |
IEC |
NFPA |
OSHA |
|
Document type |
EU Directive |
International standards |
National standards (the USA) |
Federal regulations (the USA) |
|
Mandatory |
Mandatory for products placed on the EU market. |
Not directly mandatory. Used as a basis for national standards. |
Recommended, but often incorporated into legislation and accepted as mandatory. |
Mandatory for employers in the USA. |
|
Scope |
Equipment and protective systems used in potentially explosive atmospheres (gases, dust, vapors). |
Technical standards for electrical equipment, including general requirements, protection methods, zone classification, testing, and marking. |
Fire safety, electrical safety (including explosive areas). |
Occupational health and safety of workers. |
|
Территория действия |
The European Union |
Most countries in the world |
The USA (sometimes applied in other countries) |
The USA |
|
Classification of explosion hazard zones |
Zones 0, 1, 2 (gases/vapors); Zones 20, 21, 22 (dust). |
Defines general classification principles, which are then detailed in national and regional standards. |
Classes (Class I, II, III) and Divisions (Division 1, 2), groups of substances. |
Describes general requirements for the identification and classification of explosive atmospheres in the workplace. |
|
Relationship to other regulatory documents |
Based on IEC standards. |
Form the basis for the most of national and regional standards. |
Often used as basic standards. |
Refer to NFPA and IEC/EN standards when establishing specific safety requirements. |
Thus, IEC sets global technical standards, ATEX/EN regulates the EU market, NFPA focuses on fire and electrical safety in the US, and OSHA establishes mandatory occupational safety requirements in American workplaces, often based on NFPA and IEC standards.
Bodies regulating compliance with standards
Regulating compliance with international standards is a multi-level process involving various types of bodies. It is important to understand that international organizations (ISO, IEC) develop standards but do not directly control their implementation. Control is exercised through national legislation and certification systems.
|
Document |
Regulatory bodies |
Penalties for non-compliance |
|
ATEX Directive (Directive 2014/34/EU) |
The main regulatory bodies in EU countries are: National Accreditation Bodies, National Supervisory Authorities, Occupational Health and Safety Authorities. |
These are established individually by each EU member state. For example, in Germany, the penalty for incorrect equipment labeling can reach several thousand euros per product/batch. |
|
IECEx Scheme |
IECEx Management Committee, Notified Bodies (ExCB), Testing Laboratories (ExTL), National Accreditation Bodies, National Supervisory Authorities. |
This is a voluntary certification system, so penalties are not imposed. However, sanctions arise in the event of: violation of national legislation when using products with a fake/invalid IECEx certificate, violation of IECEx scheme rules by participants (ExCB, ExTL), or non-compliance with national requirements requiring IECEx certification. In such cases, fines can reach tens of thousands of euros. |
|
NFPA |
OSHA, local inspections (US states/municipalities), enterprise security services, certification bodies (UL, FM). |
Imposed by government agencies for violations of legislation that refers to NFPA standards; can be significant (tens/hundreds of thousands of dollars) and include business bans, product recalls, and criminal liability in cases of serious consequences. |
|
ISO |
Certification bodies, national regulators, customers, and partners. |
Imposed by other bodies (certification bodies – suspension/revocation of certification, national regulators – fines under the law, customers – termination of contract, loss of reputation) depending on the situation, rather than directly by ISO. |
|
IEC |
National standardization bodies, regulatory bodies, certification bodies (e.g., within IECEx), inspection bodies, enterprises themselves. |
Imposed by government regulatory bodies that adopt IEC standards into their legislation. For example, in the US, violations of electrical safety legislation can result in fines of tens of thousands of dollars for each violation. |
Conclusion
Compliance with regulatory documents on explosion protection is a fundamental basis for safety for any enterprise working with explosive and flammable substances. Neglecting these standards can lead to catastrophic consequences: from incidents involving human casualties to major financial losses. Understanding the particular importance of this aspect, we offer a free initial consultation to check your enterprise's compliance with current explosion protection standards. ATEX.CENTER specialists are ready to answer questions about legislation and provide recommendations on checking your production's compliance with explosion protection standards.