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WorksheetsTightness Testing and IGEM/UP/1B
Total questions: 10
Worksheet time: 5mins
What is the maximum installation volume (IV) that can be worked on as per IGEM/UP/1B?
0.025m3
0.035m3
0.02m3
0.2m3
What is the maximum operating pressure (MOP) at the outlet of the emergency control valves (ECV) as per IGEM/UP/1B?
75mb
1bar
2bar
3bar
What is the maximum nominal bore for copper pipework as per IGEM/UP/1B?
22mm
28mm
35mm
45mm
When conducting a let-by test the water within the U gauge raises by more than 0.25mb, what procedure would you follow?
The test would be stopped and ESP called to repair
Disconnect the ECV and spray LDF into the barrel to prove you have let-by.
Move straight onto the tightness test suspected let-by would have no detrimental affect on the test.
Connect temporary bonding across the meter than disconnect the ECV and spray LDF into the barrel to prove let-by before contacting ESP.
What is the maximum pressure drop allowed for an existing system with appliances fitted, a G4 meter and 35mm pipework, appliance connected and no smell of gas reported?
4mb
0mb
8mb
2.5mb
The normal working pressure of a low pressure installation is?
19mb
20mb ± 1mb
21mb ± 2mb
23mb
What is the let-by test pressure on both low and medium pressure installations?
12mb
20mb
20-21mb
7-10mb
What follows a Let-By test
Temperature Stabilisation
Tightness Test
You must now use LDF
Soundness Test
Under IGEM/UP/1B what is the maximum size meter that can be worked on?
E6
U6
U16
U26
Final checks after tightness test is using leak detection fluid (LDF), where should LDF be applied?
The entire installation including all gas appliances
The test point and anaconda
The test point, gas meter connections, and anaconda
The test point only
