Building Services Engineering for Construction Quiz

What should be done if the gas pressure during the tightness test remains stable after two minutes?

• Increase the pressure

• Release the pressure

• Proceed with using the gas

• Repeat the test

What should be done if the gas pressure rises during the let by test?

• Increase the pressure

• Decrease the pressure

• Notify the gas supplier

• Ignore it

When testing a gas installation, how long does the tightness test last after temperature stabilisation?

• One minute

• Two minutes

• Three minutes

• Four minutes

What indicates that the gas system is sound during the tightness test?

• Pressure rises

• Pressure drops

• Pressure is within the permitted drop

• Gas smell is detected

What material is the flexible pipe of the service governor made of?

• Aluminum

• Copper

• Stainless steel

• Plastic

Label the following with a few lines describing its function & working principle.

1. radiator

2. Thermostatic control valve

3. Float valve

4. Circulation pump

5. Motorised three port valve

6. Room thermostat

7. Programmer

8. Boiler

What colour are gas supply pipes?

• Blue

• Yellow

• Black

• White

How much gas per hour can an E6 digital gas meter supply

• 12 cubic metres

• 3 cubic metre

• 6 cubic metres

• 7 cubic metres