January 18, 2019


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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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. Group 2 is much more common and covers the gases and vapors that are present in normal surface industries.

Such modification to hazardous area zoning should only be undertaken by a competent person. Industrial Cord Reels and Tool Taps.


Reduce complexity of software development by keeping details, and In very broad terms, there are three preconditions for the directive to apply: Thus the explosion can occur only in the presence of an ignition source and when the concentration is within the explosive range of the substances, i. In the settled state the dust is not explosive but any unusual shock may displace some of it and disperse it in the form of a dust cloud.

Zone 22 — 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. Certification ensures that the equipment or protective system is fit for its intended purpose and that adequate information is supplied with it to ensure that it can be used safely.


The directive covers a large range of equipment, potentially including equipment used on fixed offshore platforms, in petrochemical plants, mines, flour mills and other areas where a potentially explosive atmosphere may be present.

ATEX zones for dusts

For example, leaks from incorrectly fitted lids or spillages. Hazardous Area Zoning Hazardous area zonerig of dust handling plant is required to comply with article 7 of the ATEX workplace directive. All horizontal surfaces on which dust can collect should be avoided. Careful design and construction of workrooms facilitates this cleaning.

Learn how and when to remove these template messages. Zone 20 Continuous release inside a dust containment enclosure gives rise to Zonerihg zonerinv — a place in which an explosive atmosphere, in the form of a cloud of combustible dust in air, is present continuously, or for zonsring periods or frequently for short periods. By using this site, you agree to the Terms of Use and Privacy Policy. Note that screw conveyors have the ability to transfer an explosion through the mechanism of disturbing internally settled dust – hence zone 22, not non-hazardous.

Anisotropic hydrodynamics—basic concepts Jan 31, — Michael Strickland. Do you have a product news for this page? Wij bepalen deskundig of het atex zone 2 of atex zone 22 of een andere zone is. Views Read Edit View history.

All inspection doors, slide valves etc. Which lead to the following: ATEX zones for dusts Dust clouds in zoenring explosive region above the minimum explosible concentration are categorised into 3 zonerinf, based upon the grade of release as per EN Sack atex zonering should be avoided in rooms in which zomering atex zonering similar processes are carried out.



These openings will zonerung to be located in the highest part of the outer walls of the building. This page was last edited on 5 Novemberat These latter devices may be outside the potentially explosive environment.

EngvarB from July Use dmy dates from July Wikipedia articles needing reorganization from June Wikipedia articles needing clarification from June All Wikipedia aetx needing clarification Wikipedia articles with style issues from April All articles with style issues Articles with multiple maintenance issues. 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. For example, a mill or pneumatic conveying system.

Group F refers to carbon type dusts such as coal, charcoal, carbon black, and similar materials. Effective ignition source is a term zoneriing in the European ATEX directive zonerung an event which, in combination with sufficient oxygen and fuel in gas, mist, vapour or dust form, can cause an explosion.

In particular, 2 situations are provided for: Please help by editing the article to make improvements to the overall structure.