Hazardous Locations (Hazloc)

There are several testing standards and certifications across different countries for equipment being used in Hazloc and Intertek is an internationally recognized certification body for such equipment.

Intertek is providing testing and certification regarding IECEx, ATEX, CCC Ex and also Hong Kong requirement to customers around the world, with our services covering as below: 


  • IECEx Certification (for International) 


IECEx provides a product certification scheme for manufacturers, regulators and users of equipment used in hazardous areas to address the risk of fires or explosions from flammable gases or dusts. 

Testing and certification of equipment, services and competence of persons to international standards facilitates the sale of safer products internationally as objective. Under IECEx Equipment Certification Scheme, IECEx requires that electrical equipment demonstrates conformity to IEC 79 series standards prepared by IEC TC31.    

Benefits of the IECEx certification include access to over 30 member countries who accept IEC standards (national deviations may be required). Your IEC certification can be used to obtain national certification marks.

  • ATEX Certification (for Europe) 


The ATEX Directive 2014/34/EU covers equipment and protective systems intended for use in potentially explosive atmospheres. The directive defines the essential health and safety requirements and conformity assessment procedures, to be applied before products are placed on the EU market.   

Intertek is an ATEX Notified Body, accredited by UKAS (UK) and Accredia (Italy), and our many years of experience certifying equipment used in Hazardous Locations and Explosive Atmospheres includes extensive ATEX Directive 2014/34/EU expertise.   

In order to meet the requirements of the ATEX Directive, products must bear the Distinctive Community Mark (‘Ex’ in hexagon) and CE marking before being sold in the EU. Intertek can test and certify your products for ‘Ex’ and CE marks for the IEC/EN 60079 and ISO/IEC/EN 80079 series of Standards for explosive atmosphere standards.  There exists ATEX 137 Workplace Directive 1999/92/EC which has given minimum requirements for improving the safety and health protection of workers potentially at risk from explosive atmospheres.  This directive complements the responsibilities of manufacturers under Directive 2014/34/EU by setting out the responsibilities of employers. Employers must classify areas where potentially explosive atmospheres may occur, into zones. The classification given to a particular zone, and its size and location, depends on the likelihood of an explosive atmosphere occurring and its persistence if it does. 

  • CCC Ex Certification (for China) 


The CCC Ex-certification scheme applies to the Ex-production quality of manufacturing.  From 1 Oct 2020, very majority of Ex-products sold in China have to be covered by CCC Ex certification.


  • QAN and QAR (for ATEX and IECEx) 


The ATEX and IECEx scheme assure manufacturers’ quality systems by means of Quality Assurance Notification (QAN) under ATEX and a Quality Assurance Report (QAR) under the IECEx Scheme.  The scheme has a mandatory quality audit process that must be met in order to remain in compliance with requirements. 

  • ASO IECEx (for Saudi Arabia) 


Manufacturers of the specific product categories will essentially be required to have the IECEx certificate to be able to import into KSA along with registration process.  The list of products being controlled are Junction Boxes, Control Boxes, Lighting products, Plugs and Sockets, Electrical Pumps, Gas Detector and Gas Detection System.  By choosing Intertek as service provider in SABER, our local team will review the certificates and arrange subsequent testing if necessary with ultimate objective to walk you through the certification process.


  • Emirates Conformity Assessment Scheme ECASEx (for UAE) 


The (U.A.E.) Ministry for Commerce and Industry given direction for new regulations to be introduced under the program now known as the ‘Emirates Conformity Assessment System Ex’ (ECASEx). Emirates Standards & Metrology Authority (ESMA) is the regulatory body appointed by the (U.A.E.) Government to manage the program. This conformity assessment approach is based on meeting the procedures and rules as defined within IECEx scheme rules as defined within IECEx OD 01 and IECEx OD 02 for the certification of electrical products intended for use in potentially explosive atmospheres. By adopting this approach, the ECASEx program utilizes IEC Standards as a means of supporting regulation for safety requirements. A presumption of conformity is said to be met by meeting the requirements of the IECEx scheme in full, including mandatory factory site Quality Assessment Reports (QARs). Intertek is an accredited Notified Body (NB0007) by ESMA to conduct Certification activities under the ECASEx program.


  • UKEx Certification (for UK) 


Market access requirements for the UK and EU are changing as a result of the UK leaving the EU single market. As a result, the regulatory conformity process for hazardous location products intended for the UK market will also change.  

From 1st January 2022, products previously bearing the ATEX mark, will require Ex marking by a UK Approved Body.  Hazardous location products for ‘Ex’ products (formerly ATEX) only UKCA or UK Approved Bodies (the UK equivalent of an ATEX Notified Body) such as Intertek, are able to issue the appropriate certificates needed for entry to the UK market and the Standards used will be determined by the UK List of Designated Standard.  After this date, ATEX certification will no longer be recognized in the UK.   

  • Hong Kong Local Requirement (for Hong Kong) 


Reference to COP for the Electrical Wiring Regulation Section 15D, General Specification for Electrical Installation in Government Buildings under Architectural Services Department and Dangerous Goods Store under Fire Services Department, electrical equipment and wiring of electrical installations exposed to potentially explosive atmospheres should be constructed and protected to the requirements specified for hazardous areas to relevant IEC 60079 or equivalent.


Contact us today to know more about our solution:


Contact PositionEmailTel
Victor KoSales Directorvictor.ko@intertek.com+852 9423 2262

Reference to the defined Type of Protection as stated below with appropriate standard being selected with respect to the relevant protection type, manufacturers require independent 3rd party testing and certification of their products to demonstrate the product conformity.  Here below we would like to bring some basic concepts.


Types of Protection

Reference Standard

Flameproof (Ex d)

IEC 60079-1

Intrinsic Safety (Ex i)

IEC 60079-11

Increased Safety (Ex e)

IEC 60079-7

Pressurization (Ex p)

IEC 60079-2

Moulding (Ex m)

IEC 60079-18

Oil Immersion (Ex o)

IEC 60079-6

Powder Filling (Ex q)

IEC 60079-5

Non-sparking (Ex n)

IEC 60079-15 RLV

Dust Explosion Proof (Ex t)

IEC 60079-31

Hazardous locations are defined in terms of Zone Classification based on probability of a potentially explosive atmosphere reference to relevant IEC standards (for IECEx) and EN standards (for ATEX).  The classification depends on the flammable medium such as gases, mists, vapors and dusts.  In addition, the probability of a potentially explosive atmosphere occurring will also be counted.




For Gas, Mists or Vapors

Zone 0

Exposed continuously, for long period or high frequency

Zone 1

Likely to occur

Zone 2

Infrequently and for short periods only

For Dust

Zone 20

Exposed continuously, for long period or high frequency

Zone 21

Likely to occur

Zone 22

Infrequently and for short periods only

In addition to Zone Classification, hazardous locations are further divided by Gas or Dust Groups, and classified by Temperature Classes depending on the maximum temperature of the exposed surface of the product.  Explosion Group at IIA, IIB, IIC for Gases and IIIA, IIIB and IIIC for dust, along with T1 – T6 or Txx ‘C for different surface temperatures. 
Need help or have a question? +852 3008 2099

Need help or have a question?

+852 3008 2099
+852 3008 2099