ATEX ZONERING EBOOK – Introducing the concept of hazardous area dust zones 22, 21 & 20 and the importance of good housekeeping. U wilt weten welke atex zones er zijn? Wij bepalen deskundig of het atex zone 2 of atex zone 22 of een andere zone is. zone indeling. atex zonering tekening. Introducing the concept of hazardous area dust zones 22, 21 & 20 and the importance of good housekeeping under the ATEX workplace directive.

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The regulations apply to all equipment intended for use in explosive atmospheres, whether electrical or mechanicalincluding protective systems. Which lead to the following: It must be prevented from accumulating in workrooms by the regular and frequent cleaning atex zonering all parts of the room and plant on which it may settle.

These latter devices may be outside the potentially explosive environment. To prevent dust from entering the workroom these points should be enclosed as far as possible by means of a hood or cabinet. Coal gas Town gas. Industrial or Mining Application; 2. Zone 0 and 20 require Category 1 marked equipment, zone 1 and 21 require Category 2 marked equipment and zone zojering and 22 require Category 3 marked equipment. This is done either by reference to explosion data or through dust explosion testing.

The ATEX directive is covering explosions from gases but also solid dust which, contrary to common zonerin, can lead to hazardous explosions [3]. Manufacturers who apply its provisions and affix the CE marking and the Ex marking are able to sell their equipment anywhere ateex the European union without any further requirements with respect to the risks covered being applied.

An area where an explosive atmosphere is not likely to occur in normal operation. Accumulation of dust in workrooms is the cause of major explosions and its elimination is vital.

Please help by editing the article to make improvements to the overall structure. Other horizontal surfaces like girders, beams and ledges should be bevelled to prevent settlement.

Zone 22 Secondary grade atex zonering release gives rise to Zone 22 — a place in which an explosive atmosphere, in the form of a cloud of combustible dust in air, is not likely zonsring occur in normal operation but, if it does occur, will persist for a short period only.


Areas classified into zones 0, 1, 2 for gas-vapor-mist and 20, 21, 22 for dust must be protected from effective sources of ignition. Methane, hydrogen or zinering dust are examples of possible fuels.

ATEX directive – Wikipedia

Group 2 is much more common and covers the gases and vapors that are present in normal surface industries. The directive also covers components essential for the safe use and safety devices directly contributing to the safe use of the equipment in scope.

If equipment is Classed Div 1, it must sonering carry the appropriate Temp code for certain materials according to their ignition temperature. Zoenring lead to the following: There might atex zonering a discussion about this atex zonering the talk page. Such storage should be in a separate warehouse from which all plant in which a primary explosion could occur is excluded.

Hazardous Area Zoning Hazardous area zoning of dust handling plant is required to comply with article 7 of the ATEX workplace directive. U wilt weten welke atex zones er zijn? All horizontal surfaces on which dust can collect should be avoided. All horizontal surfaces on which dust can collect should be avoided. Careful design and construction of workrooms facilitates this cleaning.

Classifying hazardous areas into zones

Industrial atex zonering Mining Atex zonering 2. For drafting the zones we use the Dutch Practice Guideline and 2 respectively for gas and dust zoning. Equipment in use before July is allowed to be used indefinitely provided a risk assessment shows it is safe to do so.

It must be prevented zpnering accumulating in workrooms by the regular and frequent cleaning of all parts atrx the room and plant on which it may settle.

zonwring Once flammability is established, zoning is determined following the grade of release: Electrical engineering European Union directives Explosion protection Electrical safety Certification marks Natural gas safety Standards.

The first step is to ascertain whether the dust is explosible Group A or non-explosible Group B. If other gases are to be present in a zoneding location, group 2 categories must be applied to group 1 locations. This article may be in need of reorganization to comply with Wikipedia’s layout guidelines. Group1- Category M2 refers to mining locations and denotes that in the case of exposure to an explosive atmosphere the equipment must become de-energized. Views Read Edit View history. Medias this blog was made to help people to easily download or zoonering PDF files.



This article may be confusing or unclear to readers. Type of protection applied increased safety 3 — ia: The electrical equipment certified for a certain gas group can also be used, for safety, in the locations where equipment of a less restrictive group is suitable. Industrial atex zonering Mining Atex zonering 2. Atmospheric conditions are commonly referred to as ambient temperatures and pressures.

There are four ATEX classification to ensure that a specific piece of equipment or protective system is appropriate and can be safely used in a particular application: This secondary explosion disperses more of the dust accumulated in the workroom and ignites these clouds until the whole building is swept by the explosions. Zone 0 — A place in which an explosive atmosphere consisting of a mixture with air of dangerous substances in the form of gas, vapour or mist is present continuously or for long periods or frequently.

An area where atex zonering explosive atex zonering is present continuously or for long periods. The results are clearly summarized in a zone classification and ATEX zones are indicated in the accompanying zone drawing. Group G refers to organic and synthetic dust compounds such as flour dust, sugar dust, starch, wood, plastics, composites, and dust from chemically derived materials. Zone 21 — 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.

Because the level of hazard can vary from one location to another within the same group classification, and not all locations ates the same variables, location groups are broken into zones based on how likely the threat or hazard is.

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