The word ATEX (Atmosphere Explosive) is a shortcut with reference to the European Directive 94/9/CE concerning equipment intended for use in potentially explosive atmospheres with the aim to maximize safety and health of operators dealing with such systems
Gases and Vapours
There are three zones for gases and vapours:
Zone 0 | Flammable atmosphere highly likely to be present – may be present for long periods or even continuously |
Zone 1 | Flammable atmosphere possible but unlikely to be present for long periods |
Zone 2 | Flammable atmosphere unlikely to be present except for short periods of time – typically as a result of a process fault condition. |
Zone zero is the most severe zone (the highest probability of flammable atmosphere presence). Equipment for this zone needs to be very well protected against providing a source of ignition.
Dusts
There are three zones for dusts:
Zone 20 | Dust cloud likely to be present continuously or for long periods |
Zone 21 | Dust cloud likely to be present occasionally in normal operation |
Zone 22 | Dust cloud unlikely to occur in normal operation, but if it does, will only exist for a short period |
(The presence of dust layers does not automatically lead to the dust zone. The likelihood of the dust layer being disturbed to create a cloud needs to be considered. Dust layers also need careful consideration in terms of ignition temperature. Because the dust layer can make the equipment under it hotter then normal, a factor of safety is applied to the layer ignition temperature.)
The need is to isolate glass reactors, filters and mixers inside a transportable isolator
The set-up can be changed frequently, than several utility connections must be availables (Nitrogen, solvents, hot/cold liquids….)
This isolator is certified to be used in ATEX zone 2,22.
In order to increase safety level, the system is flushed with Nitrogen instead of normal air
The system is controlled via a dedicatedd PLC located in a remoted control room
This isolator is certified to be used in ATEX zone 2,22.
It is connected to a 50 liters vacuum dryer, and it is used to dry HAPI (High Actice Product Ingredient).
Internally also a High precision scale is located.
In order to increase safety level, the system is flushed with Nitrogen instead of normal air
The system is controlled via a dedicatedd PLC located in a remoted control room
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