PRESSURE LEAK DETECTOR
DLR-G ..
24/10/2018
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2. Safety
2.1
Intended Use
Operating mode "I" (I = "interval", i.e. gas pressure bottle is con-
nected for commissioning and functional check): For double-walled
pipes/fittings installed underground or indoors only.
Operating mode "C" (C = "continuous", i.e. gas pressure bottle is
continuously connected to the leak detector): For double-walled
pipes/fittings installed above or underground.
The leak detector alarm pressure must be at least 1 bar higher
than the maximum feed pressure in the product-transporting pipe.
Grounding in accordance with valid regulations
1
.
Tightness of the leak detection system according to section 7.3.4.
Leak detector installed outside of the explosive area.
Lead-throughs for connection lines into and out of the manhole
chamber must be sealed gas-tight.
Leak detector (electric) cannot be turned off.
Use of air pressure as the leak detection medium:
o
Air pressure can always be used for conveyed media with a
flash point > 60°C (for Germany > 55°C acc. to TRGS 509 and
751).
o
For conveye
d media with a flash point ≤ 60°C (for Germany
≤ 55°C acc. to TRGS 509 and 751), only if their explosive va-
por-air mixtures can be assigned to temperature code T1 to T3
and gas group II A or II B and if they have an inner wall that is
not permeable for media that can lead to the development of
explosive vapor-air mixtures.
o
For conveyed media with a flash point
≤
60°C (for Germany
≤ 55°C acc. to TRGS 509 and 751), it must also be noted that in
case of a leak in the inner pipe, air is pressed into the conveyed
product. This must be considered when evaluating explosion
protection of pumps/fittings.
Section 3.4.5 must be complied with.
Any claims arising from misuse are excluded.
2.2
Obligation of the Operating Company
The leak detector DLR-G is used in a commercial environment. The
operating company is therefore subject to statutory occupational safe-
ty obligations.
In addition to the safety instructions in this documentation, all appli-
cable safety, accident prevention and environmental regulations must
be adhered to. In particular:
-
Compiling a risk assessment and implementing its results in a di-
rective
1
For Germany: e.g. EN 1127
Safety
WARNING!
Danger from
misuse
WARNING!
Danger in case
of incomplete
documentation
