Leak Test; Pressure Test - Samson 2479 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.
SAMSON regulators are delivered ready for
use. To test the regulator functioning before
start-up or putting back the regulator into
operation, perform the following tests:
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. Check the screw gland of the sensor or
thermowell for leakage.
EB 3132-3 EN
5. Depressurize the pipeline section and
valve.
6. Rework any parts that leak and repeat
the leak test.
5.4.2

Pressure test

Note
The plant operator is responsible for per-
forming the pressure test. SAMSON's Af-
ter-sales Service can support you to plan
and perform a pressure test for your plant.
NOTICE
!
Risk of valve damage due to a sudden pres-
sure increase and resulting high flow veloci-
ties.
− 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 The valve must remain open.
Therefore, the control thermostat must be
removed from the valve.
Î Make sure that the pressure rises simulta-
neously upstream and downstream of the
regulator to avoid damaging the balanc-
ing plug.
Installation
5-9