PIETRO FIORENTINI VS/AM 58, Техническое руководство, Страница: 2 / 14

Technical Manual MT 302-I
1
WARNINGS
GENERAL WARNINGS
The equipment described in this manual is a device subject to pressure
installed in pressurized systems.
The equipment in question is normally installed in systems which
transport flammable gases (for example natural gas).
WARNINGS FOR OPERATORS
Before installation, commissioning or maintenance, operators must:

take note of the safety regulations applicable to the installation
in which they must work;

obtain the necessary permits to operate when required;
 acquire the necessary personal protective equipment (helmet,
goggles, etc.);
 ensure that the area in which they operate is equipped with
the required collective protection and the necessary safety
information.
PACKAGING
The packaging for transporting the equipment and related spare parts
have been specifically designed and manufactured in order to prevent
damage during normal transportation, storage and handling activities.
Therefore the equipment and spare parts must be kept in their
respective original packaging until their installation at the final site. On
opening the packaging, the condition of the materials contained within
should be checked. In the event of damage, report the damage to the
supplier keeping the original packaging for inspection.
HANDLING
The equipment and its components must be handled after ensuring
that the lifting means are adequate for the loads to be lifted (lifting
capacity and functionality).
The equipment must be handled, when required, using the lifting points
provided on the equipment itself. The use of motorized means is
reserved for the persons in charge.
INSTALLATION
The installation of the valve must comply with the regulations (laws or
standards) in force in the place of installation.
In particular, systems for natural gas must possess characteristics in
accordance with the legal requirements or regulations in force at the
installation site or at least in accordance with EN 12186 or EN 12279;
in particular paragraphs 6.2, 7.5.2, 7.7 and 9.3 of EN 12186 and 6.2,
7.4, 7.6 and 9.3 of EN 12279 must be adhered to. Installation in
accordance with these standards minimizes the risk of a fire hazard
and the formation of potentially explosive atmospheres.
The equipment is without internal pressure limiting devices, therefore, it
must be installed making sure that the operating pressure of the unit on
which it is installed never exceeds the maximum permissible pressure
value (PS).
The user should therefore provide, when it is deemed necessary,
for the installation on all adequate pressure limiting systems; he must
also set up the system with appropriate venting or drainage systems in
order to discharge the pressure and the fluid contained in the system
before carrying out any inspection and maintenance activities.
If the installation of the equipment requires the field application of
compression fittings, these must be installed in accordance with the
instructions of the manufacturer of the fittings themselves. The choice
of the fitting must be compatible with the use specified for the
equipment and with the specifications of the system when provided for.
COMMISSIONING
Commissioning must be carried out by properly trained personnel.
During the commissioning activities, personnel who are not strictly
necessary must be kept at a distance and the forbidden area must be
suitably marked (signs, barriers, etc.).
Make sure that the equipment settings are those requested; if
necessary, reset them to the required values in accordance with the
procedures indicated in this manual.
During commissioning the risks associated with any discharges to the
atmosphere of flammable or noxious gases must be evaluated.
For installation on distribution networks for natural gas you must
consider the risk of formation of explosive mixtures (gas / air) inside the
piping.
COMPLIANCE WITH DIRECTIVE 97/23 / EC (PED)
The VS/AM 58 valve is classified as a pressure accessory according to
Directive 97/23/EC (PED).