BS EN 61241-10:2004
Electrical apparatus for use in the presence of combustible dust - Classification of areas where combustible dusts are or may be present

Standard No.

BS EN 61241-10:2004

Release Date

2004

Published By

British Standards Institution (BSI)

Status

Be replaced 2009-10

Replace By

BS EN 60079-10-2:2009

Latest

BS EN 60079-10-2:2015

Scope

This part of IEC 61241 is concerned with the classification of areas where explosive dust/air mixtures and combustible dust layers are present, in order to permit the proper selection of equipment for use in such areas. In this standard, explosive dust atmospheres and combustible dust layers are treated separately. In Clause 4, area classification for explosive dusts clouds is described, with dust layers acting as one of the possible sources of release. In Clause 7, the hazard of dust layer ignition is described. This standard assumes effective housekeeping based on a system of cleaning for the plant. The principles of the standard can also be followed when combustible fibres or flyings may cause a hazard. This standard is intended to be applied where there can be a risk due to the presence of explosive dust/air mixtures or combustible dust layers under normal atmospheric conditions. It does not apply to - underground mining areas, - areas where a risk can arise due to the presence of hybrid mixtures, - dusts of explosives that do not require atmospheric oxygen for combustion, or to pyrophoric substances; - catastrophic failures which are beyond the concept of abnormality dealt with in this standard (see Note 1), - any risk arising from an emission of flammable or toxic gas from the dust. This standard does not take into account the effects of consequential damage following a fire or an explosion. NOTE 1 Catastrophic failure in this context is applied, for example, to the rupture of a storage silo or a pneumatic conveyor. NOTE 2 In any process plant, irrespective of size, there can be numerous sources of ignition apart from those associated with equipment. Appropriate precautions will be necessary to ensure safety in this context, but these are outside the scope of this standard.

BS EN 61241-10:2004 history

• 2015 BS EN 60079-10-2:2015 Explosive atmospheres. Classification of areas. Explosive dust atmospheres
• 2009 BS EN 60079-10-2:2009 Explosive atmospheres - Classification of areas - Combustible dust atmospheres
• 2004 BS EN 61241-10:2004 Electrical apparatus for use in the presence of combustible dust - Classification of areas where combustible dusts are or may be present
• 2002 BS EN 50281-3:2002 Electrical apparatus for use in the presence of combustible dust - Classification of areas where combustible dusts are or may be present