Samson 3246, Mounting And Operating Instructions

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EB 8046 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 burn injuries due to cold compo-
nents and pipelines.
Depending on the process medium, valve
components and pipelines may get extremely
cold and cause cryogenic burns.
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.
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,
disconnect and lock the pneumatic air
supply as well as the control signal.
Î
Do not impede the movement of the actu -
ator and plug stem by inserting objects
into the yoke.
Î
Before unblocking the actuator and plug
stem after they have become blocked
(e.g. due to seizing up after remaining in
the same position for a long time),
release any stored energy in the actuator
(e.g. spring compression). See
associated actuator documentation.
DANGER !
WARNING !
WARNING !
WARNING ! WARNING !