The directive 94/9/EC
concerns equipment and protective systems intended for use in potentially
explosive atmospheres and is applicable in countries of the European
Economic Community (European Union), on a voluntary basis from 1 March
1996 and compulsory from 1 July 2003. Major aspects are summarized here:
Degree of Harmonization.
Total harmonization is mandatory.
Scope.
All equipment and protective systems intended for use in potentially explosive
atmospheres and auxiliary items.
Areas of use.
All potentially explosive atmospheres - flammable gases, vapors, mists,
or dusts - with specific exceptions like medical and home environments,
ships, and public transport.
Combustible Dust Hazards.
Technical requirements for equipment and protective systems where the risk
arises from combustible dust are covered by the Essential Health and Safety
Requirements.
Equipment Categories.
Equipment is divided into two groups:
I. Coal-mining (two subcategorize);
II. Others (three subcategories).
Technical Requirements.
This is a "New Approach" Directive. It specifies the Essential Health and
Safety Requirements (EHSR's) which must be met, but accepts compliance
with other harmonized standards.
Conformity Assessment.
Adopts various procedures ranging from EC-Type Examination to control
of production by the manufacturer.
Marking.
The "CE conformity marking" is mandatory. In special cases, the ID number
of the Notified Body is also required. Other markings may be required.
Documentation.
Manufacturers are required to maintain technical records of all matters
relating to explosion safety of equipment. All quality-system documentation
must also be available.
