PRESSURE LEAK DETECTOR
DLR-GS ..
06/08/2020
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6. Commissioning
(1) Only perform commissioning once the steps in section
5 "Mounting" have been fulfilled.
(2) Flush the interstitial space with inert gas if walls of storage me-
dium are not impermeable.
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(3) If a leak detector is commissioned on a pipe (fitting) that is al-
ready in operation, special protective measures must be taken
(e.g. testing that the leak detector and/or the interstitial space is
free of gas). Additional measures may be necessary depending
on the local conditions and must be assessed by qualified per-
sonnel.
6.1 Commissioning the Pressure Gas Bottle
(1) Turn pressure regulator all the way back.
(2) Insert a suitable manometer (indicating range) into the coupling
51 of the test equipment and insert the test equipment into the
coupling (6.2) of the leak detector.
(3) Open cylinder shut-off valve (if necessary, test tightness between
pressure reducer and bottle)
(4) Set pressure on the pressure reducer using the pressure regula-
tor on the pressure reducer according to section 3.3 (adjust dur-
ing pressure build-up, if necessary).
(5) After completion of the functional check:
- Close shut-off valve on the pressure reducer.
- Close cylinder shut-off valve.
- Remove pressure reducer from the bottle (Caution: Gas will
escape until the pressure reducer has no pressure).
- Install protective cover on bottle.
6.2 Commissioning the Leak Detector
(1) Tightness of the interstitial space prior to commissioning is as-
sumed
(2) Switch on line voltage
(3) Ascertain lighting of "Operation" and "Alarm" signal lamps and
sounding of the audible alarm. If necessary, turn off audible
alarm signal.
(4) Pressure build-up the interstitial space:
Open the shut-off cock 2.2 at the test equipment to build up the
pressure in the leak detector and the interstitial space.
With very large interstitial spaces it may be necessary to switch
bottles (see section 5.3 in conjunction with sections 5.4 and 6.1)
Note: If no pressure build-up is achieved with the pressure gas
bottle connected, the leak must be located and corrected (check
the settings for the pressure reducer as well, if necessary).
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For Germany: Additional DIBT requirements must be considered for such double-walled pipes.
Commissioning