Samson 3351 - Start-Up; Start-Up;Putting the Valve Back into Operation

EB 8039 EN 6-1
Start-up
6 Start-up
The work described in this section is to be
performed only by personnel appropriately
qualiedtocarryoutsuchtasks.
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.
Î Allow components and pipelines to cool
down or warm up to the ambient tem-
perature.
Î Wear protective clothing and safety
gloves.
Risk of personal injury due to pressurized
components and process medium being dis-
charged.
Î Do not loosen the screw of the test con-
nection while the valve is pressurized.
Risk of hearing loss or deafness due to loud
noise.
Noise emission (e.g. cavitation or ashing)
may occur during operation caused by the
process medium and the operating condi-
tions. Additionally, a loud noise may briey
occur through the sudden venting of the
pneumatic actuator or pneumatic valve ac-
cessories not tted with noise-reducing t-
tings. Both can damage hearing.
Î Wear hearing protection when working
near the valve.
Risk of personal injury due to exhaust air
being vented.
While the valve is operating, air is vented
from the actuator, e.g. during closed-loop
operation or when the valve opens or closes.
Î Wear eye protection when working in
close proximity to the control valve.
Before start-up or putting the valve back into
service, make sure the following conditions
are met:
− The valve is properly installed into the
pipeline (see the 'Installation' section).
− The leak and function tests have been
completed successfully (see 'Testing the
installed valve' in the 'Installation' sec-
tion).
− The prevailing conditions in the plant
sectionconcernedmeetthevalvesizing
requirements (see information under 'In-
tended use' in the 'Safety instructions
and measures' section).
6.1 Start-up/putting the valve
back into operation
1. Allow the valve to cool down or warm up
to reach ambient temperature before
start-up when the ambient temperature
and process medium temperature differ
greatly or the medium properties require
such a measure.
WARNING
!
WARNING
!
WARNING
!
WARNING
!
WARNING
!