Since July 1st it has been mandatory under European law, that all equipment for use in a potentially explosive atmosphere must conform to specific safety. Introducing the concept of hazardous area dust zones 22, 21 & 20 and the importance of good housekeeping under the ATEX workplace directive. 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.

Author: Kesho Meztigis
Country: Libya
Language: English (Spanish)
Genre: Career
Published (Last): 18 February 2005
Pages: 468
PDF File Size: 6.50 Mb
ePub File Size: 8.1 Mb
ISBN: 429-3-27201-451-4
Downloads: 80593
Price: Free* [*Free Regsitration Required]
Uploader: Gardaramar

Fine ground filling sourounds the ignition source so that an arc from inside the housing cannot ignite the surrounding combustable atmosphere. Local exhaust ventilation should be provided to control the dust cloud within the cabinet. This means that a device rated for a maximum operating surface temperature of C would not be safe or approved for environments where the ignition temperature of the material it is exposed to is below C, even if the device is Group D approved and the materials it is exposed to fit within a Group D designation.

The primary distinction is made with the division of the materials into two groups. Effective ignition source is a term defined in the European ATEX directive as an event which, in combination with sufficient oxygen and fuel in gas, atex zonering, zonfring or dust form, can cause an explosion.

Version 3 – March According NPR for less than 0. The motor vehicles are homologated and maintained in good working order overhauled.

Do you have a white paper for this page? Anisotropic hydrodynamics–basic concepts Jan 31, – Michael Strickland.

Recall that the ignition energy of gases is less than the ignition energy of dusts. Careful design and construction of workrooms facilitates this cleaning. The use of compressed air atex zonering cleaning is not recommended. June Learn how and when to remove this template message. 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. Group 1 assumes the main threat is considered constant and posed by Methane, thus no gas subdivisions are normally included.


Equipment for gas The surface temperature of the electrical equipment must not exceed the ignition temperature of the hazardous substances present; for group II electrical equipment the maximum surface temperatures are divided into temperature classes from T1 to T6 according to the limits indicated in the table below. 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.

A static vacuum pump fitted to a ring main is more suitable for large factories; the ring main should be provided at intervals with facilities for the connection of flexible cleaning hoses.

All inspection doors, slide valves etc. This page was last edited on 4 Julyat Atmospheric conditions are commonly referred to as ambient temperatures and pressures.

Basic concepts for protection – SCAME SK

Industrial atex zonering Mining Atex zonering 2. Explosion Proof Cord Reels. Protective gas contains ignition source. European Directive — The protection of workers from potentially explosive atmospheres — makes it mandatory under European law to assess for an explosion risk and classify the area accordingly. A static vacuum pump fitted to a ring main is more suitable for large factories; the ring main should be provided at intervals with facilities for the connection of flexible cleaning hoses.

The shavings and sawdust usually remain suspended in the air for brief periods due to their dimensions. The scope of the SCAME guide is to support, and not replace, the ATEX Directives by trying to provide valid information about the primary types of installations on which the ATEX Directives have an impact and inform the installer about the criteria for recognizing, selecting and correctly installing the SCAME products and solutions whose characteristics best suit the environment in question.

An area where atex zonering explosive atex zonering is present continuously or for long periods. 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.


Basic concepts for protection – SCAME SK –

In order to apply this rule, however, suitable and reliable statistical data must be available. Atex zonering using this site, you agree to the Terms of Use and Privacy Policy. Open Learning Unit Level 1.

Industrial Work Area Heaters.


Actieve en passieve explosiebescherming. Marine Shore Power Cords and Equipment. ATEX and IECex schemes are based on the same concepts and very similar, however, some differences such as dust ratings, protection methods markings and such are present. Zone 20 Continuous release inside ztex dust containment enclosure gives rise to Zone 20 – 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 for short periods.

MIC ratio relative to methane.

MESG is the maximum gap that an internal ignition of an explosive mixture is atex zonering propagated to the exterior. Intrinsic safety is zonerong upon limiting energy levels so that combustible atmospheres cannot be ignited.

For a Zone 2 location, the likelihood of a hazardous atmosphere existing drops to no more than a single hour per year. MESG zonerring Experimental vessel has an aperture of length 25mm from the inside to the outside of the vessel.

Group 2 is much more common and covers the gases and vapors that are present in normal surface industries. Basic Concepts Atomic weights most commonly used in environmental engineering.

An explosive atmosphere is a mixture of flammable gases. Housekeeping In many plants designed for the handling and processing of flammable sonering, dust may escape from equipment and settle on the floor and on fixtures and fittings in the workroom.