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2
Prior to
use
2.1 Selection of right equipment
You need to be sure that the equipment you intend to take into explosion-hazardous area matches
up with the zone classification and other safety requirements related. The operator is solely
responsible for the correct selection and use of the equipment at his site. At least the following
points should be notified prior to use.
2.2 Intended purpose of equipment
Please keep in mind what the actual application of equipment is. For example in case the
equipment is to be moved when connected to the supply it needs to be designed for that purpose.
If the certification is mentioning “portable” it means that the equipment is suitable and tested for
portable use. If the certification does not mention portable it means that the equipment shall not be
moved when it is in operation (reliable fixing of equipment).
SLAM Star is designed and tested for portable use
2.3 Application of use (Zone XX) in accordance with equipment category
Operator has the best knowledge of area classification at his site. To help the operators’ selection
of equipment the certification is describing the equipment category. For explosion hazardous areas
there are three equipment categories.
•
Category 1 product is suitable for use in Zones 0, 1 and 2 / (20, 21 and 22)
•
Category 2 product is suitable for use in Zones 1 and 2 / 21 and 22
•
Category 3 product is suitable for use in Zones 2 / (22)
SLAM Star is Category 2 equipment
2.4 Explosion group (IIA, IIB or IIC) in accordance with Equipment group (IIA,
IIB or IIC)
This information is vital because different substances require varied amount of energy to be
ignited. Safety requirements for equipment are not the same for different substances (e.g. static
electricity requirements). Therefore making the selection easier the gases are divided to three
different groups (IIA, IIB and IIC). Further information about the substances can be found from
EN/IEC 60079-20-1 (Data for flammable gases and vapours, relating to the use of electrical
apparatus).
SLAM Star belongs to Equipment group IIC
2.5 Temperature class of the equipment
Please observe the Ignition Temperature (IT) of the substance creating the explosion hazard at
your site. Select the equipment based on IT of the substance. The temperature of the equipment
must be lower than IT. The highest temperature of the equipment is specified by using
Temperature Classes T1 to T6.
Example
Petroleum ignition temperature is approximately 250°C
à
Maximum allowed temperature class of
the equipment is T3 (< 200° C)
