AIR/GAS PRESSURE - VACUUM - OPEN SYSTEM

QUESTION OVER PRESSURE
LEAK DETECTOR

VACUUM
LEAK DETECTOR
OPEN
SYSTEM
Is the product kept in the
inner pipe in case of a leak
in the inner pipe?
YES
Air / gas enters produkt
NO
product enters interstitial
space
NO
product enters interstitial space
Is the integraty of the outer pipe monitored permanently? YES YES NO
Is the environmental
protection realised with a
leakage in the outer pipe?
YES
air escapes from the
intestitial space into the
environment.
YES
air or ground water enters
the interstitial space.
NO
if the outer skin is already untight, when a leak in the inner skin occurs.
If NO, are you able to allow for the risks and does your insurance policy cover for environmental decontamination costs?
Can testing be done without
access to pipe?

YES
by bleeding air/gas out of
the system directly at the
leak-detector.
YES
by ventilating the system
directly at the leak detector.
NO
Environmental impact on
decommissioning or
recommissioning after a leak
ZERO LOW MODERATE TO HIGH