Samson 2405 Series, Mounting And Operating Instruction

Page: 27 / 40

EB 2520 EN 27
Decommissioning and removal
7 Decommissioning and
removal
Risk of bursting in pressure equipment.
Valves and pipelines are pressure equip -
ment. Improper opening can lead to bursting
of the valve.
− Before starting any work on the control
valve, depressurize all plant sections af-
fected as well as the valve.
− Drain the process medium from all the
plant sections affected as well as the valve.
− Wear personal protective equipment.
Risk of personal injury due to residual pro-
cess medium in the valve.
While working on the valve, residual me -
dium can flow out of the valve and, depend -
ing on its properties, cause personal injury,
e.g. (chemical) burns.
Wear protective clothing, safety gloves and
eye protection.
Risk of burn injuries due to hot or cold com-
ponents and pipeline.
Valve components and the pipeline may be -
come very hot or cold. Risk of burn injuries.
− Allow components and pipelines to cool
down or warm up to the ambient tempera -
ture.
− Wear protective clothing and safety gloves.
DANGER !
WARNING !
WARNING !
7.1 Decommissioning
To decommission the control valve for service
and repair work or disassembly, proceed as
follows:
1.
Close the shut-off valve on the upstream
side.
2. Close the shut-off valve on the down -
stream side.
3. Completely drain the pipelines and
valve.
4. Depressurize the plant.
5. If necessary, allow the pipeline and reg-
ulator components to cool down or warm
up to the ambient temperature.
7.2 Removing the valve from
the pipeline
1. Put the regulator out of operation (see
section 7.1).
2. Unbolt the flanged joint.
3. Remove the valve from the pipeline.