Samson 3222 Series, Mounting And Operating Instructions, Page: 47 / 64

EB 5866 EN 10-1
Decommissioning
10 Decommissioning
The work described in this section is only to
be performed by personnel appropriately
qualified to carry out such tasks.
Risk of bursting due to incorrect opening of
pressurized equipment or components.
Valves and pipelines are pressure equipment
that may burst when handled incorrectly.
Flying projectile fragments or the release of
process medium under pressure can cause
serious injury or even death.
Before working on the control valve:
Î
Depressurize all plant sections affected
and the valve (including the actuator).
Release any stored energy.
Î
Drain the process medium from all the
plant sections concerned as well as the
valve.
Risk of fatal injury due to electric shock.
Î
Before performing any work on the
device and before opening the device,
disconnect the supply voltage and protect
it against unintentional reconnection.
Î
Only use power interruption devices that
are protected against unintentional re-
connection of the power supply.
Risk of burn injuries due to hot components
and pipeline.
Valve components and the pipeline may be-
come very hot. Risk of burn injuries.
Î
Allow components and pipelines to cool
down.
Î
Wear protective clothing and safety
gloves.
Risk of hearing loss or deafness due to loud
noise.
Noise emission (e.g. cavitation or flashing)
may occur during operation caused by the
process medium and the operating
conditions. Additionally, a loud noise may
briefly occur through the sudden venting of
the pneumatic actuator or pneumatic valve
accessories not fitted with noise-reducing
fittings. Both can damage hearing.
Î
Wear hearing protection when working
near the valve.
Crush hazard arising from actuator and
plug stem moving (Type 3222/2780
Pneumatic Control Valve).
Î
Do not insert hands or finger into the
yoke while the air supply is connected to
the actuator.
Î
Before working on the control valve, dis-
connect and lock the pneumatic air sup-
ply as well as the control signal.
DANGER !
DANGER !
WARNING !
WARNING !
WARNING ! WARNING !