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5.4.1
Leak test
The plant operator is responsible for per-
forming the leak test and selecting the test
method. The leak test must comply with the
requirements of the national and internation-
al standards that apply at the site of installa-
tion.
Tip
SAMSON's After-sales Service can support
you to plan and perform a leak test for your
plant.
1. Slowly open the shut-off valve (1) in-
stalled upstream of the regulator.
2. Apply the required test pressure.
3. Check the regulator for leakage to the at-
mosphere.
4. Depressurize the pipeline section and
valve.
5. Rework any parts that leak and repeat
the leak test.
5.4.2
Pressure test
Note
The plant operator is responsible for
performing the pressure test. SAMSON's
After-sales Service can support you to plan
and perform a pressure test for your plant.
EB 3009 EN
NOTICE
!
Risk of valve damage due to a sudden
pressure increase and resulting high flow
velocities.
− Slowly open the shut-off valves.
During the pressure test, make sure the fol-
lowing conditions are met:
Î Do not allow the pressure to exceed the
1.5 times the pressure rating of the valve
body.
Î Do not apply a pressure higher than the
specified pressure rating or the maximum
constant operating pressure
(25 bar/360 psi) to the actuator. The
lowest pressure always applies and re-
stricts the maximum test pressure.
Î Make sure that the pressure rises simulta-
neously upstream and downstream of the
regulator. To achieve this, fill the system
and apply pressure only on the upstream
pressure side (not the return flow side).
5.5 Proof testing
Detailed test instructions u SH 3009
They describe testing in the workshop and in
the installed state. The maintenance intervals
depend on the intervals between regular
testing and the scope of the testing. A five-
year interval has proven suitable under nor-
mal operating and ambient conditions. We
recommend replacing parts subject to wear
on performing this maintenance work.
Installation
5-7
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