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Technical Guide

ATEX

ATEX is the name commonly given to the two European Directives for controlling explosive atmospheres

  • Directive 99/92/EC (also known as ‘ATEX 137’ or the ‘ATEX Workplace Directive’)
  • Directive 94/9/EC (also known as ‘ATEX 95’ or ‘the ATEX Equipment Directive’)

Explosive atmospheres are classified in 3 level for gases and 3 level for dust

A place in which an explosive atmosphere consisting of a mixture with air of flammable substances in the form of gas, vapour or mist is present continuously or for long periods or frequently

Example:
Zone 0 conditions generally arise only inside containers or plant (evaporators, reaction vessels, etc.), but can also occur near vents and other openings.

A place in which an explosive atmosphere consisting of a mixture with air of flammable substances in the form of gas, vapour or mist is likely to occur in normal operation occasionally.

Example:
This may include:

  • the immediate vicinity of zone 0;
  • the immediate vicinity of feed openings;
  • the immediate area around fragile vessels or pipes made of glass, ceramics, and the like, unless the contents are too small to form a hazardous explosive atmosphere;
  • the immediate area around inadequately sealed glands, such as at pumps and valves;
  • the inside of plant such as evaporators or reaction vessels.

A place in which an explosive atmosphere consisting of a mixture with air of flammable substances in the form of gas, vapour or mist is not likely to occur in normal operation but, if it does occur, will persist for a short period only

Example:
Zone 2 may include, for example, places surrounding zones 0 or 1.

NB: Places where flammable substances are transported only in pipes which are durably technically leak-proof are not hazardous places.

A place in which an explosive atmosphere in the form of a cloud of combustible dust in air is present continuously, or for long periods or frequently.

Example:
In general, these conditions arise only inside containers, pipes, vessels, etc., that is, usually only inside plant (mills, dryers, mixers, pipelines, silos, etc.), when explosive dust mixtures in hazardous quantities can form continuously, over long periods or frequently.

A place in which an explosive atmosphere in the form of a cloud of combustible dust in air is likely to occur in normal operation occasionally

Example:
This zone can, for example, include places in the immediate vicinity of, for example, powder filling and emptying points and places where dust deposits occur and in normal operation give rise occasionally to an explosive concentration of combustible dust when mixed with air.

A place in which an explosive atmosphere in the form of a cloud of combustible dust in air is not likely to occur in normal operation but, if it does occur, will persist for a short period only.

Example:
This zone can include, for example, places in the vicinity of plant containing dust, if dust can escape at leaks and form deposits in hazardous quantities.

AMPCO SAFETY TOOLS® are manufactured from materials approved by the
BAM (Federal Institute of Materials and Research in Berlin, Germany)
and fulfills the recommendation of the directive 99/92/EC

Directive 99/92/EC – risks from explosive atmospheres of 16 December 1999 on the minimum requirements for improving the safety and health protection of workers potentially at risk from explosive atmospheres (15th individual Directive within the meaning of Article 16(1) of Directive 89/391/EEC).

Objective

This Directive aims at establishing and harmonising minimum requirements for improving the safety and health of workers potentially at risk from explosive atmospheres.

Definition

The Directive defines ‘explosive atmosphere’ is a mixture with air, under atmospheric conditions of flammable substances in the form of gases, vapours, mists or dusts in which, after ignition has occurred, combustion spreads to the entire unburned mixture.

Contents

Obligations of employers

The employer shall take appropriate technical and/or organisational measures for the prevention of the formation of explosive atmospheres, or where the nature of the activity does not allow that, the avoidance of the ignition of explosive atmospheres and reduce the effects of an explosion in such a way that the health of workers is not at risk.

Information outlined above is from the official website of OSHA : https://osha.europa.eu

For further details about the European directives please visit: https://osha.europa.eu/de/legislation/directives

Here at AMPCO® we consider that the safety of the people must always be placed first. 

 

We are international advocates of workplace safety and are proud to fully stand by our company’s slogan of:

protecting lives since 1922

As a pioneer in the development of specialty alloys and safety hand tools, we still remain as an international benchmark of reference in the industry. We are also the preferred brand of choice by many reputable companies in high risk industry sectors such as the fire prevention sector, the oil and gas industry, mining industry and the military.

We recognize the risk taken by personnel when working in an explosive atmosphere.
In this regard the materials used to produce our range of Safety Hand  tools have been tested by the BAM – Federal Institute of Materials and Research Berlin, Germany.

This prestigious laboratory has certified AMPCO SAFETY TOOLS® materials compliant to fulfill the directive 99/92/EC.

The certificates related to these tests are available from the following link:

AMPCO SAFETY TOOLS® are known to be the best quality products. Most of the manufacturers measure the hardness and the chemistry composition. These 2 checks are important but the mechanical properties that are needed to make a durable and strong tool are directly driven by the grain structure.
If the grain structure is fine and regular than the mechanical properties of the material are reached. Otherwise the tool can break and cause damages to the people and the installation.

AMPCO SAFETY TOOLS® is using the microcast® technique to be sure that the quality of the tools is always the best.

AMPCO METAL produces a number of engineered high performance aluminum bronze and specialty copper alloys using a patented technology called MICROCAST®. Based on the exclusive magnetic steering (Magneto-Hydro-Dynamic) at the melting/casting furnace, this manufacturing process produces an extremely fine grain and uniform microstructure, promoting excellent dispersion of the alloy chemical elements for consistency quality and durability.

Advantages/Benefits of MICROCAST® AMPCO® alloys

AMPCO METAL’s patented MICROCAST® manufacturing process for continuous cast rod, rectangle and tube, affords the following benefits:

Fine and most uniform grain size available vs. standard products

Exhibit stable properties over the wide range of working temperatures, similar to their wrought equivalents

High specific strength, allowing components to be fabricated in smaller dimensions, saving component weight

High tensile and fatigue strength available in a non-galling bearing and bushing material

Outstanding wear resistance when properly lubricated