Dynamic elaboration on the Art & Science of Hazardous Area Protection
This Hexagon Logo with “Ex” marked inside is as per specification of ATEX ( ATmosphères EXplosives meaning Explosive Atmosphere ) . Explosive Atmosphere refers to all Industrial & related facilities which process flammable materials ,in any form .The very presence of this LOGO on any product clearly indicates that the product is not ordinary and due safety procedures must be followed in its:-
CE stands for ” European Community ” (In French). It is a declaration from the manufacturer that his product (carrying this mark ) fulfills (at least) following requirements :
1. All legal procedures were followed to achieve the permission to use this mark
2. The product confirms with all the relevant EC directives
It consists of the CE logo and, if applicable, the four digit identification number of the notified body involved in the conformity assessment procedure
What is a Directive ?
A directive is a legislative act of the European Union, which requires member states to achieve a particular result without dictating the means of achieving that result. It can be distinguished from regulations which are self-executing and do not require any implementing measures. Directives normally leave member states with a certain amount of flexibility as to the exact rules to be adopted. Directives can be adopted by means of a variety of legislative procedures depending on their subject matter. (Wikipedia)
(French Title of the special EU Directives 94/9/EC. ATEX derives its name from this French title )
The ATEX directive consists of the following two EU directives describing what equipment and work environment is allowed in an environment with an explosive atmosphere.
The aim of directive 94/9/EC is to allow the free trade of ‘ATEX’ equipment and protective systems within the EU by removing the need for separate testing and documentation for each member state
Explosive Atmosphere is a mixture with air , under atmospheric conditions, of flammable substances in the form of gas or vapour in which, after ignition, combustion spreads throughout the unconsumed mixtures. (IEC: 60079-10 ).
The Hazardous Areas (ref: IEC 60079-10, 14)
Areas in which an explosive atmosphere is present , or may be expected to be present , in quantities such as to require special precautions for the construction , installation and use of equipment. (An Area is a three dimensional region or space)
The Hazardous Contents associated with an area , are quantified through the process of Area Classification
Objectives of Area Classifications .
The basic underlying philosophy is SAFETY of life and property by quantifying the location.A special methodology is used by virtue of which an industrial location ( 3 dimensional space ) is analyzed and classified into Classes & Zones , keeping in view the chemicals/substances involved & the industrial procedures being carried out in that location.
The end-result ,of classifying an area , would be something as follows:-
The stakeholders directly involved in the Hazardous Area Domain
The final SAFETY of the respective Electrical Equipment depends upon the close cooperation and co-ordination of all the above mentioned stakeholders .
IECEX has gone many steps ahead to claim that Ex is part of every industry.
Personal views about Ex logo.
IEC 60079 – Guide Lines about the EX Landscape
cont…more at Ex-ART