APPENDIX A
VACUUM LEAK DETECTOR VL ..
Use of the vacuum leak detector VL .. on interstitial spaces filled with leak
detection liquid
A.1 Pre-conditions
(1) Only leak detectors with suitable alarm pressures may be used, depending on the diameter
of the tank and the density of the stored product.
(2) The procedure described in the following is designed for tanks in compliance with DIN
6608.
(3) If this procedure is carried out on other tanks, agreement with the local authority responsi-
ble is required in individual cases.
A.2 Preparation
(1) Dismount the leak detector on liquid basis.
(2) Suction the leak detection liquid out of the interstitial space:
(3) Suction
procedure:
– Mount the adapters for suction and measuring line
– Connect the installation pump to the suction line connection via an intermediate tank
1
– Suction off until there is no more liquid drawn in
– Connect the vacuum measuring gauge to the measuring line connection
– Continue the evacuation process (at approx. 500 mbar) until no more liquid is suctioned
– Repeat the evacuation process after a break if necessary to make sure a gas buffer
is created above the remaining leak detection liquid.
A.3 Mounting and starting-up the leak detector
(1) A gas buffer has been created above the leak detection liquid due to the suction process.
(2) Mount the leak detector according to the documentation and start operation.
(3) Carry out a functional test on the leak detector.
A.4 Alarm
(1) An alarm can occur if insufficient leak detection liquid was suctioned off and the level of
liquid has increased in the interstitial space due to an increase in temperature.
Remedy:
Create a new air buffer above the leak detection liquid.
(2) An alarm can also be triggered by the penetration of groundwater / product to be stored or
air in the interstitial space and an increase in liquid level connected with this.
Remedy:
Look for the leak and eliminate if necessary, then put the leak detector back into operation.
If the leak cannot be located or repaired, consult the specialist responsible on site to clarify
further procedure.
1
The liquid suctioned off is collected in this tank.
19/07/2010
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Содержание VL 230
Страница 21: ...I I II II III III IV IV 21 21 21 21 20 20 20 20 27 11 2002 P 060 000...
Страница 22: ...Ex 73 73 73 101 101 101 68 03 43 27 97 17 12 2002 A 01 60 102 76 30 21 61 20 H max...
Страница 23: ...Ex 73 73 73 68 03 43 27 97 17 12 2002 B 01 H max H max 21 20 71 36 69 01 01 2 09 H max...
Страница 24: ...Ex 73 101 43 03 68 33 17 12 2002 D 01 H max 27 21 20 71 69 01 09 H max...
Страница 25: ...Ex 73 43 03 68 17 12 2002 E 01 H max 27 21 20 71 69 01 09 H max...
Страница 26: ...Ex 17 12 2002 H 01 27 43 03 68 93 89 101 73 27 27 27 21 20 71 69 01 09...
Страница 30: ...18 01 2002 L 01 27 02 82 101 73 33 68 43 03 Ex 21 20 71 69 01 09...
Страница 31: ...18 01 2002 M 01 73 Ex 21 20 71 69 01 09 95 96 74 02 43 03 68 27 27 L max max 1 m...
Страница 32: ...Ex 73 101 68 03 43 27 18 12 2002 O 01 21 20 71 36 69 01 01 2 09 27 33 44 p 10 bar...
Страница 33: ...21 02 2017 SL 853 600 2 6 4 5 3 11 12 1 AC DC 105 106 102 71 01 69 24 1 24 3 59 09 76 17 60 Rp...
Страница 35: ...22 84 85 85 22 52 98 98 0 Kl 1 0 17 12 2002 P 115 392 21 21 20 20 90 90...
Страница 43: ...15 07 2008 W 01 27 02 82 101 111 112 73 33 68 43 03 Ex 21 20 71 69 01 09 50 150 C...
Страница 44: ...Ex 73 101 112 68 43 97 15 07 2008 W 02 21 44 20 71 36 69 01 01 2 09 50 150 C...
Страница 48: ...8 200 260 300 T 140 220 28 06 2005 Dimension Drilling...
