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MC • Edition 05.20 • Nº 279 663
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12. Commissioning and Decommissioning
12.2 Leakage test
Prior to commissioning
• The performance data on the type plate must correspond to the ordering data.
• Prevent explosive gas-air mixture: the room atmosphere must constantly be monitored
using appropriate gas concentration measuring devices for the detection of gas leakages.
• Operate the device only if all safety devices are fully functional.
• Only qualified personnel is allowed to carry out the commissioning.
12.1 General information
Lekspray
pmax = 10 bar
1
2
Prior to commissioning, check the device for any
external and internal leakage.
1. Test gas of the leakage test: air or inert gases.
2. Upstream and downstream shut-off valves must be
closed.
3. Release the test section. Release gas in the test sec
-
tion in a controlled and safe manner into the atmos
-
phere.
4. Test pressure > blow-off pressure SBV: Block the line
upstream of the SBV.
5. Connect the test section to the test device and apply
pressure.
6. Test pressure: 1.1 x system-specific operating pres
-
sure. PS maximum of the device. Please take into
account the different compressive strengths of the
system.
7. Observe the waiting time necessary for the pres
-
sure compensation according to the system-specific
volume.
External leakage.
8. Use a suitable leak detection spray on the device.
9. Monitor the foam formation.
Internal leakage.
10. Release the pressure in the test section downstream
of the device.
11. Monitor the pressure increase on the outlet side.
Pressure gauge accuracy 0.1 mbar
12. Once the leakage test has been carried out, open the
shut-off valve upstream of the SBV.
13. Release pressure in the test section.
Содержание 279042
Страница 14: ...14 72 MC Edition 05 20 Nº 279 663 A B C D E A B C D E F Type UHD F Type HD ...
Страница 15: ...MC Edition 05 20 Nº 279 663 15 72 A B C D F E A B C D E F ND MD for G2 DN40 DN50 ND for G1 G1 5 y DN25 ...
Страница 43: ...MC Edition 05 20 Nº 279 663 43 72 Type UHD X Y Q S W V M C A B D E G F J K L N P H O R U I ...
Страница 45: ...MC Edition 05 20 Nº 279 663 45 72 Type ND MD for 2 DN40 DN50 M B D E G F J K L N H X Y Q S W V O I T ...
Страница 64: ...64 72 MC Edition 05 20 Nº 279 663 14 4 Tools required A B C2 D C1 ...