ATEX – from our newsletter nr.1


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.)

MOBILE ISOLATOR FOR CHEMICAL REACTORS (SUITABLE FOR ATEX ZONE)

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

ISOLATOR FOR DRYING PROCEDURES (SUITABLE FOR ATEX ZONE)

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

Do you find this article interesting?

If you wish to receive our monthly newsletter  subscribe here

 

Domande?

Ai sensi del Decreto Legislativo n. 196/2003 la informiamo che i dati personali che ha appena inserito saranno trattati nel pieno rispetto di tale legge. Selezionando "Acconsento" esprime il consenso alla raccolta e al trattamento dei dati personali da parte di Comecer SpA. Prima di procedere leggere attentamente la nostra privacy policy.
 
 

Iscriviti alla nostra Newsletter

Novità, inviti ad eventi e fiere direttamente nella tua casella di posta