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ATEX REQUIREMENTS
According to the following documents:
• I-N97 CEN/SFG-I "ATEX-Guidance Sheet (ATEX
Guideline of Sector Forum Gas - Infrastructure)"
• FAREGAZ Position on ATEX Topics,
The Dosaodor DO200 injection system is classified as
"Installation" according to chapt. 5.2.2 of "ATEX Guide Lines
4.a Edition - September 2012", therefore it's not included in
Directive 2014/34/UE (ATEX I).
ATEX devices that are included in Dosaodor DO200 system
must be Ex-certified.
Dosaodor DO200 system must comply to Directive 1999/92/EC
(ATEX ll) and the other applicable National standards.
Odorizing systems (absorption and/or injection types) are
designed as independent installations or as part of pressure
reducing stations (ref.: EN 12186).
Dosaodor DO200 is sold on the market with all its
complementary parts, like for example the bypass for
activating the absorption type system, the material for
electric installation and all the other components to be
properly installed on site.
The technical reference standards are released at National
level (in Italy: UNI 9463-1 and 9463-2), but odorizing
systems must be installed under the responsibility of the
user after completing the risk analysis (dangerous areas
classification, etc.) and, during the start-up, also the testing
and necessary set-ups are realized under the
user responsibility.
TRANSPORT AND HANDLING
Suitable and consolidated procedures for transportation and
handling have to be adopted in order to avoid any damage
to the devices under pressure due to abnormal stress.
The product can be lifted and positioned with standard lifting
devices. A special care has to be taken to avoid any damage
to installed accessories.
STORAGE
The Dosaodor DO200 is supplied with all the surfaces
completely protected (painted or in stainless steel), so it
does not require special precautions for the storage; it is
enough to follow some recommendations.
At its arrival on site, the product has to be completely
inspected to check any possible damage caused by the
transport. Inspect also the conditions of the pressure
accessories that are installed (valves, level indicators, etc.).
Dosaodor DO200
INSTALLATION
General Rules
!
National safety standards must be followed
for the installation and operation of odorizing
systems, in particular for the electric
connections, fire and lightning protections,
and for the procedures of odorant
liquid handling.
All ventilation means must be supplied in
the pressure reducing stations where the
pressure equipment is installed.
Before the installation, check that operating
conditions are suitable with the limit ranges.
For odorant tank installation:
• Foresee an adequate cathodic protection
and electric isolation to avoid any
corrosion.
• Gas must be cleaned through dedicated
filters/separators/dust collectors to avoid
any risk of erosion or abrasion in the parts
under pressure.
COMPONENTS POSITIONING
Control Panel
To be installed in an electrically "Safe" area. Therefore, in
natural gas decompression plants, the facilities suited to
these purposes are the following:
• Electric power facility, a defined area designed and built
to house all electrical devices linked to and controlled by
the station. i.e. Flow computers, remote monitoring units,
telephones, etc.
• Heating plant, that is, a defined area designed and built to
house the boilers needed for the heating of gas. This area
must be built and installed according to the specifications
for an electrically "Safe area" classification.
• Rooms and storage units located outside the areas
defined as "Hazardous areas" according to the actual
regulation.
It is recommended that the control panel installation
guarantees an easy opening of main door.
It is best to install the unit is in the immediate vicinity
of the flow computer, to facilitate the connection of the
cable receiving signals from the Dosaodor DO200 during
operation.
Ground connections of the electronic control unit and
shielded cables to must be connected an equipotential node
(mandatory only for the countries members of the EEC).
WARNING
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