Directive 2014/34/Eu (Atex) - DALEMANS DAT 420 Instruction Manual

DIRECTIVE 2014/34/EU (ATEX)

Hazardous area
Gas
0
1
2
Equipment category
Category
1
2
3
Equipment group
Hazard
Gas
Dust
Temperature class
The equipment must be chosen so that its surface temperature does not exceed the ignition tem-
perature of the explosive gas present. Below are some examples of flammable gases classification
according to their ignition temperature (this list is not exhaustive).
Gas group
IIA
IIB
www.dalemans.com
Dust Area
20 Continuous, long-term or frequent presence of explosive atmosphere.
21 Explosive atmosphere is likely to occur under regular operation.
Explosive atmosphere is not likely to occur under regular operation or, if
22
it does occur, it will only be for short-period.
Definition
Equipment with a "very high" degree of safety
Equipment with a "high" degree of safety
Equipment with a "normal" degree of safety
Group Example
I Methane
IIA Propane
IIB Ethylene
IIC Hydrogen
IIIA Combustible flyings
IIIB Non-conductive dust
IIIC Conductive dust
Temperature class and maximum surface temperature of the equipment
T1
450 °C 300 °C
Butane
Methane Ethanol
Toluene Methanol
Xylene Propanol
Propane
IIC
City gas Ethylene oxide
Hydrogen Acetylene
T2 T3
200 °C
Kerosene
Nonane
Acetaldehyde
Octane
Pentane
Suitable for use in Zone
0 and 20
1 and 21
2 and 22
Equipment
Intended for use in mines
Intended for use in other locations than
mines
T4 T5
135 °C 100 °C
Ethyl ether
T6
85 °C
Carbon
disulphide
|
5