86
DIV
AL 600
EN
Use, maintenance and warning instructions
MEDIUM PRESSURE REGULATOR
|
COMMISSIONING
|
REV. A
8.8 -
COMMISSIONING PROCEDURE OF REGULATION LINE: DIVAL 600 REG
DIVAL 600 REGULATOR WITH IN LINE M LA SLAM-SHUT VALVE FUNCTION
Fig. 8.22. Commissioning of DIVAL 600 reg regulator-m LA
Step
Action
1
1
Make sure that the bleed cock (6) is partially open.
2
2
Check that the LA slam-shut valve is in the shut-off position.
NOTICE!
If the LA slam-shut valve is in the open position, close it using the manual button (fig. 8.20, ref.
10).
3
3
Slowly open the upstream shut-off valve (V1), checking the pressure indicated by the upstream pressure gauge
(4).
4
4
Perform the internal tightness check of the LA slam-shut valve, referring to chapter "8.7.1 - Internal tightness
check of LA slam-shut valve".
NOTICE!
In case of leaks, please refer to the chapter "10 - Troubleshooting" to clear the causes of mal
-
functions.
5
5
Make sure that the bleed cock (6) is partially open.
6
6
Slowly pressurise the regulation line, acting on the lever of the LA slam-shut valve (refer to section "Operation",
paragraph 4.5.4.1), checking that the downstream pressure (Pd) indicated on the downstream pressure gauge
(5) does not exceed the required calibration value by over 50%.
7
7
When the regulator is put into service, the pressure on the downstream pressure gauge (5) will be equal to
the calibration value of the main regulator.
NOTICE!
In the first line pressurisation phase, the pressure on the downstream pressure gauge (5) could
exceed the required calibration value, depending on the response time of the regulator.
8
8
Check calibrations of the pressure switch of the LA slam-shut valve by referring to paragraph "8.7.3 - Proce-
dure for calibrating the pressure switch for the LA incorporated SLAM-SHUT VALVE".
Summary of Contents for Dival 600
Page 156: ...TM0023ENG...
