Leakage; Pressure Test - Samson 45-1 Mounting And Operating Instructions

WARNING
!
Risk of burn injuries due to hot or very cold
components and pipelines.
Depending on the process medium, valve
components and pipelines may get very hot
or cold and cause burn injuries.
Î Wear protective clothing and safety
gloves.
The regulator components are delivered by
SAMSON ready for use. To test the regulator
functioning before start-up or putting back
the regulator into operation, perform the fol-
lowing tests:

5.4.1 Leakage

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.
Î All required control lines are connected
to the actuator and are not shut off.
1. Install the regulator into the pipeline (see
Chapter "Installation").
2. Apply the required test pressure.
3. Check the regulator for leakage to the at-
mosphere.
EB 3124 EN
4. Depressurize the pipeline section and
regulator.
5. Rework any parts that leak and repeat
the leak test.

5.4.2 Pressure test

NOTICE
!
Risk of valve damage due to a sudden
pressure increase.
− Slowly open the shut-off valves.
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.
During the pressure test, make sure the fol-
lowing conditions are met:
Î All required control lines are connected
to the actuator and are not shut off.
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
maximum specified pressure rating or
maximum operating pressure to the actu-
ator (see section 'Technical data' in the
'Design and principle of operation'
chapter).
Î Make sure that the pressure rises simulta-
neously upstream and downstream of the
regulator to avoid damaging it.
Installation
5-7