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ATEX and IEC Ex Flame-proof Explosion Proof Lighting & Equipment
Explosion Proof Lights
Explosion Proof Motors - Motors for Hazardous Locations
Industrial and Vaporproof Emergency Failsafe Lighting
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Machine Vision Lights
QC Series Industrial Portable Lighting - Quick Change Mount
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10/13/13 Hazardous Location Equipment Certification Schemes According to Region

Article- Oct, 2013 By Larson

Explosion Proof LED Light Fixture

Larson Electronics US/Canada Approved Explosion Proof LED Light Fixture

Regardless of country, explosion proof/intrinsically safe electrical lighting equipment to be used in locations where flammable/explosive gases, vapors and dusts may be present will require some form of approval for use in these environments. There are three dominant forms of compliance schemes in use today although they do not provide an as yet globally accepted standard. These schemes include the Atex Directive, IECEx scheme, and the Class-Division systems derived under the National Electrical Code for North America. This can make the manufacture and export of HAZLOC equipment across international boundaries difficult as these schemes are not directly inter-compatible outside their respected regions, except in the case of IECEx which is slowly becoming a global standard and ATEX which is commonly adopted with some caveats.  Below is information related to the dominant classification schemes and their adherents, and the schemes in place for other non participating regions/countries.

Many countries follow a formal certification scheme using a 3 zone system, and base this on the IEC60079 series of standards under the IECEx scheme. These can be used outright as national standards, or adopted with some national deviations so they are workable with already existing local installation codes. For the majority of countries that still form their own national standards, the IEC60079 series still forms the basis for their standards. Countries such as the United States and Canada have their own established HAZLOC schemes in place, but in order to provide a more homogenous system have also adopted a second set of standards to include Zones based off of the IEC60079 series as well as enhanced intrinsic safety requirements under UL913.

The European Union has adopted the ATEX Directive as their dominant scheme and all equipment carrying CE/ATEX marking is acceptable among all member nations. This provides an easier form of achieving compliance over a wide region, facilitating the more efficient manufacture, certification and trade of HAZLOC equipment within this area.

The IECEx Scheme is intended to eventually become a global standard, but for now remains apart from many countries and is used by many as a basis off of which their own national schemes are formed. Countries such as the United States and Canada are beginning to adopt some changes adapted under IECEx, but to date a full conversion to this global scheme has yet to take place.

Below are the certification requirements listed according to country. It is important to keep in mind that the requirements and regulations for acceptable certification can change frequently, and as the IECEx scheme continues to gain ground this will increase in pace. For instance, in the United States the latest edition of UL913 includes intrinsic safety guidelines formed in accordance with the IECEx scheme that will become mandatory as of 2016. Thus it is important for those involved in the development, manufacture and sale of equipment intended for HAZLOC markets to keep abreast of the current developments for their intended markets and regions.

United States-
In the US a Class, Division, Groups and Zones system is in use based on guidelines provided by the National Electrical Code published by the NFPA. Equipment to be sold in the US must be certified under the Nationally Recognized Testing Laboratories (NRTL) program which is overseen by OSHA. The US also has agreements in place with Canada which allows some cross compatibility between US and Canadian forms of compliance regulations, thus a form of dual standards systems exists.

In Canada, the Canadian Electrical Code published by the CSA forms the basis for a national scheme which includes in part Classes and Zones. As mentioned above, a dual standard exists between the US and Canada which also allows the use of US NEC standards. Recognized testing authority is accredited to laboratories by the Standards Council Canada (SCC).

European Union-
In Europe, classification of hazardous locations is broken into two main groups, further divided with three zones for gases and vapors, and three zones for combustible dusts which are based in the type of location, when the hazard is present, the likelihood of it existing, and how long it may exist. All equipment sold or used within the European Union must carry the CE mark which is inclusive of the ATEX Directive and any other directives which may apply according to equipment type. Any equipment meeting ATEX Directive standards is allowable for sale and use among any EU nation participating in the program.

China bases its hazardous locations national certification on acceptance of the the IECEx scheme and also provides national certification according to ATEX/IECEx testing reports. China maintains an acceptance of the ATEX/IECEx Schemes and so  provides certification for equipment meeting the standards under these schemes through its NEPSI “National Supervision and Inspection Center for Explosion Protection and Safety of Instrumentation”.

Russia is another country adopting the IECEx/ATEX Schemes, maintaining a certification body accepting ATEX/IECEx reports and issuing national certification based on both. Russia also requires what is known as a GOST-R certificate for electrical equipment imported into the country and the IECEx/ATEX certification or reports built under these schemes can be used to obtain the GOST-R certificate. Russia also requires that equipment be issued a use permit issued by their Federal Ecological, Technological and Atomic Supervision Service.

India is yet another country participating in the IECEx Scheme, but as yet lacks an accredited ExCB (Approved IECEx Certification Bodies).  India has several certification agencies in operation and those engaging in trade of hazardous location electrical equipment into India can use IECEx/ATEX certification and reports to facilitate acquiring national certification.

Aside from the United States and Canada, hazardous location compliance schemes are dominated by the IECEx Scheme/ATEX Directive, with most countries adopting testing and approval standard based on their requirements. In some countries it is necessary to provide both IECEx/ATEX certification as well as testing reports under these schemes, while others will accept either/or. IECEx is expected to eventually become the dominant form of compliance scheme in the eventual future as it is specifically intended to address a global market and facilitate trade across international borders as a result. The international community however remains disjointed in regards to compliance standards, and schemes and approval processes change on a rather frequent basis, so it is incumbent upon manufacturers and distributors to keep abreast of these developments as they occur.

Related Categories/Products
Category/Product (click on link below for more information)
Explosion Proof Lights
Paint Spray Booth Lights
Metal Halide Class 1 Division 2 Lights
Paint Spray Booth LED Lights
Explosion Proof Fluorescent Lights for Paint Booths, Oil Rigs, Boats -2 foot - 2 lamp -Multi-voltage
Explosion Proof Fluorescent Lights - 4 foot - 4 Lamp - for Paint Booths on Cart with Wheels
Stainless Steel - Class 1 Division 2 - 400W Metal Halide Hazardous Area Flood Light
Class 1 Division 2 & Class 2 Division 1 400 Watt Metal Halide Light - Ceiling, Wall or Pendant Mount
Class 1 & Class 2 Division 1 Explosion Proof UV Fluorescent Light - two foot two lamp
Class I, Div. I Explosion Proof Fixture- IP67
Hazardous Location Lighting - 250 Watt Metal Halide - Class 1, Division 2 - Permanent Mount
Explosion Proof Paint Spray Booth LED Light - 2 Foot 2 Lamp Fixture - Class 1, Div. 1 - Low Voltage
Surface Mount Explosion Proof, Waterproof Fluorescent Lights - T12 Very High Output - Oil Rigs - 2 L
Low Profile Hazardous Area LED Light - Lay-In Mount -Front Load Troffer - Class 1, Div. 2
Explosion Proof Low Profile Linear LED light - 3600 Lumens - Class 1 Div 1 - Pendant Mounted
140 Watt LED Explosion Proof Quadpod - Dual 70 Watt LED Heads - 200 foot cord - 11,600 Lumens
Explosion Proof Fluorescent Light - T5HO Emergency Battery Backup x2 - 4 foot 4 lamp
Explosion Proof Emergency LED light - 4 foot 2 lamp - Backup Ballast - Class 1 & 2 LED Light
Explosion Proof Emergency LED light - 4 foot 4 lamp - Backup Ballast - Class 1 & 2 LED Light
Explosion Proof LED Drop Light / Trouble Light - 7 Watt LED - Low Voltage AC - 50 Foot Cord - 12 24V
Explosion Proof Fluorescent Light for Paint Booths, Oil Rigs, Boats -2 Foot-8 Lamp-T5HO Bulbs
Stainless Steel - Class 1 Division 2 - 250W High Pressure Sodium Hazardous Area Flood Light
Stainless Steel - Class 1 Division 2 - 1000 W High Pressure Sodium Hazardous Area Flood Light
Explosion Proof Low Profile Linear LED Light - Class 1 Div 1 - 4 Feet - 120-277 VAC - 20 Foot Cord
Explosion Proof Low Profile Linear LED light - Pendant Mounted - Class 2 Div 1-120-277VAC 50/60hz
Explosion Proof Blasting Light - HID Blasting Gun Light - 20 Watt - Rechargeable - C1D1
Explosion Proof Emergency LED Light - Class 1, Class 2 Div 1 - Paint Spray Booth Cert - 2nd Gen LEDs
32 Watt Stainless Steel Zone 1 & 2 LED Fixture - Corrosion Resistant - ATEX/IECEx Approved - 2ft
70 Watt Explosion Proof LED Light on Adjustable Rail / Ladder / Scaffold Bracket Mount
Explosion Proof Fluorescent Light - Paint Booths, Rigs - 2', 2 Lamp Fixture - Bi-Axial Bulb Design
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