Installa on, Opera on and Maintenance VL10/…‐en Rev.08/2018
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OMC S.p.A: Via G. Galilei, 18 - 20060 - Cassina de Pecchi (MI) - ITALY - www.omcvalves.com - Tel.: (+39) 02.95.28.468
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SUE 1994/08/04
ENGLISH
1.0 SAFETY INFORMATION
The safe operation of this product is ensured only if it is installed, commissioned, used and maintained in an
appropriate way by qualified personnel in compliance with the operating instructions.
1.01 INTENDED USE
Verify that the valve is suitable for the intended use and application by checking:
- that the material of which the valve is made up of is compatible with the process fluid;
- that the valve is suitable for the pressures and temperatures of the process fluid;
- that a suitable safety device is fitted to the system to prevent any hazardous overpressures or overtemperatures
in the system.
OMC valves are not intended to withstand any external stresses which can be induced by the systems in which
they are inserted. The installer must take account of these stresses and take the appropriate measures to prevent
them.
1.02 ACCESS
Ensure safe access and, if required, a safe working platform (with a suitable protection) is provided, before
operating or installing the product. Arrange the suitable lifting means, if required.
1.03 LIGHTING
Ensure the area around the valve is adequately lit and is suitable to safely work on the valve.
1.04 HAZARDOUS FLUIDS IN THE PIPE
Take account of the content of the pipe (process fluid) or anything it may have previously contained. Take special
safety precautions where flammable, hazardous substances are present, or where fluid pressure or temperature
may be hazardous to health.
1.05 ENVIRONMENTAL SITUATIONS
Take account of: areas at risk of explosion, lack of oxygen (such as tanks, wells, etc.…), hazardous gases,
temperature limits, high or low temperature surfaces, risk of fire (for example during welding operations),
excessive noise, moving machines.
1.06 TEMPERATURE
Wait until the temperature normalizes after the interception to prevent any risks of burn or freezing.
1.07 SYSTEM
Take account of the possible effects on the whole expected working system.
In particular, you must assess any proposed actions and the consequences that may result in any other
part of the system, You must ensure the system remains safe at all times.
Make sure that the control valve is isolated via shut-off valves to prevent any abrupt variations to the system.
1.08 PRESSURIZED SYSTEMS
Make sure that the pressure is isolated and discharged to the atmospheric pressure in safe conditions. Take
account of a double insulation (double block and vent) and the blocking or the labelling of the closed valves. Do
not consider the system depressurized even if the pressure gauge indicates zero pressure. The depressurization
process should include taking the valve through its full stroke, to ensure all pressure is allowed to exhaust to
atmosphere.
During the operation the valve is pressurized. Before performing any maintenance operation or action on
the flanges and closing caps, make sure that the line is depressurized (0 bar) and at ambient temperature.
