Tightness Testing and IGEM/UP/1B

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