10..2 SET PRESSURE AND ADJUSTMENT OF RINGS
DANGER
WARNING
CAUTION
CAUTION
Never face the outlet of a
valve when it is
discharging as this may
result in serious personal
injury or death.
Always take off the test
gag before performing
the pop test. Replace the
gag before adjusting the
screw and the rings to
prevent any unexpected
valve opening.
Protect against high
noise levels which occur
during popping tests.
Keep a safe distance
when the test is being
performed.
Helmets and gloves must
be worn to prevent any
injures while operating or
working on the valve.
All the safety valve are tested at the Trillium Flow Technologies
TM
factory. Nevertheless, a calibration on the actual equipment
with a full capacity is recommended. This will ensure a proper opening and the perfect rings adjustment.
The factory adjusments are initial ones only. Final ajustments on the operating system shall be always
preferred, especially if particular blowdown are required.
The safety valve set pressure may be checked by using either of the following procedures –
1 The system pressure increase
2 An online testing device.
• Using the first method, the system pressure is increased until the popping point of the safety valves
is reached. This method allows both verification of the set pressure and clarification of the
blowdown.
• For the second method, the Trillium Flow Technologies
TM
online testing device is used to determine the valve’s
opening pressure at the normal system operating pressure. The difference between set pressure and
operating pressure which is necessary to test the valve is compensated by the online testing device.
This online testing device is made up of a hydraulic cylinder and pressure, temperature and force
transducers which are able to open the valve and to give precise values of the force needed to
perform this procedure (see also section 9.3)
Before the set pressure test is performed, the following procedures must be followed:
• Please follow the recommendations for installation which are provided in section 7,
• The pressure gauge which is used to check the opening pressure shall be as close as possible of
the valve inlet;
• The test gag must have been removed prior to performing the test. Should any adjustment be
necessary, the valve should be gagged to make sure it remains closed.
37
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STARFLOW V
™
PRESSURE RELIEF VALVE
SARASIN-RSBD
™
