DALEMANS DAT 420, Инструкция по эксплуатации

Страница: 5 / 20

www.dalemans.com
|
5
DIRECTIVE 2014/34/EU (ATEX)
Hazardous area
Gas Dust Area
0 20 Continuous, long-term or frequent presence of explosive atmosphere.
1 21 Explosive atmosphere is likely to occur under regular operation.
2 22
Explosive atmosphere is not likely to occur under regular operation or, if
it does occur, it will only be for short-period.
Equipment category
Category Definition Suitable for use in Zone
1 Eq uipment with a “very high” degree of safety 0 and 20
2 Equipment with a “high” degree of safety 1 and 21
3 Equipment with a “normal” degree of safety 2 and 22
Equipment group
Hazard Group Example Equipment
Gas
I Methane Intended for use in mines
IIA Propane
Intended for use in other locations than
mines
IIB Ethylene
IIC Hydrogen
Dust
IIIA Combustible flyings
IIIB Non-conductive dust
IIIC Conductive 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
Temperature class and maximum surface temperature of the equipment
T1
450 °C
T2
300 °C
T3
200 °C
T4
135 °C
T5
100 °C
T6
85 °C
IIA
IIB
IIC
Methane
Toluene
Xylene
Butane
Ethanol
Methanol
Propanol
Propane
Kerosene
Nonane
Octane
Pentane
Acetaldehyde
City gas Ethylene oxide Ethyl ether
Hydrogen Acetylene
Carbon
disulphide