ATEX & IECEx Zones & Equipment

ATEX & IECEx Zones & Equipment​

An atmosphere can become potentially explosive when it contains dangerous levels of flammable gases, mists or dusts.
If a source of ignition is then introduced, combustion can occur.

The risk of explosion can be reduced by preventing the release or build-up of flammable substances and by eliminating sources of ignition.

However first we need to understand if or how long an explosive atmosphere could be present.

This is where zones are introduced and in general this is based on historical information as per;

The following table shows Zones in relation to ATEX safety categories that equipment is required to meet to ensure the correct level of protection is applied within a potentially explosive atmosphere;

*unless risk assessment states a higher or lower category is required
The following table shows Zones in relation to Equipment Protection Levels that equipment is required to meet to ensure the correct level of protection is within a potentially explosive atmosphere;
*unless risk assessment states a higher or lower EPL is required
The following table shows Temperature Class, Max Surface Temperature (in normal & fault specific conditions)  in relation to which Areas they are suitable for use.

The following table shows Gas Sub Groups for surface industries, their example/typical substance in relation to which “gas areas” they are suitable for use;

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Explosion Protection at a glance

Markings, Comparisons and Applications

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Americas

1225 North Loop West, Suite #705 Houston, TX 77008 Office: 713.862.0088 Fax: 832.358.1165

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UAE

1803 ADCP Tower A, Electra Street, Abu Dhabi, UAE
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India

Bldg. – 39, Shop No. 102, Indian Corporation, Dapode Rd, Mankoli Naka Bhiwandi, Dist. Thane, Maharashtra 421302 India
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Myanmar

85 Pan Hlaing Street Sanchaung Township 11111 Yangon The Republic Of The Union Of Myanmar
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Thailand

1/9 Jaroenpattana Road Tambol Huy Pong Amphur Muang Rayong 21150 Thailand
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Singapore

2 Venture Drive, #16-06 Vision Exchange, Singapore 608526 Office: +65.6251.8820