Gas Installation and Tightness Test Quiz

What equipment is required for a tightness test?

• Wrench

• Screwdriver

• Manometer

• Hammer

What checks are required for any electronic test equipment?

• Calibrated

• Unplugged

• Rusty

• Broken

Where are the readings taken from on a water manometer?

• Side of the tube

• Bottom of the meniscus

• Middle of the tube

• Top of the meniscus

What pressure do we apply to the manometer when carrying out a let-by test?

• 15-17 mbar

• 7-10 mbar

• 10-12 mbar

• 5-7 mbar

How do we confirm let-by of the ECV on a low pressure installation?

• Shake the valve

• Disconnect the downstream outlet union and apply leak detection fluid to internal barrel or ball

• Blow air into the valve

• Apply soap on the valve

What is the maximum allowable pressure drop for an existing installation with appliances connected, E6 meter with 28mm pipework?

• 10mbar

• 12mbar

• 8mbar

• 6mbar

If the purge volume is less than 0.02m3, is the purge a lit or unlit purge?

• Unlit purge

• Depends on the weather

• Lit purge

• Doesn't matter

What is the purge volume of an installation comprising of a U6/G4 meter with 22mm pipework from the meter outlet?

• 0.01m3

• 0.04m3

• 0.02m3

• 0.03m3

What equipment is used during a tightness test?

• Thermometer

• Testing tee

• Tape measure

• Screwdriver

What is the installation volume of a G10/U16 gas meter?

• 0.045m3

• 0.035m3

• 0.025m3

• 0.015m3