Module 7.1 Knowledge Questions Flashcards
The working pressure at a meter regulator must be measured:
a With all appliances turned off.
b With appliances in operation.
c Prior to a tightness test.
d With only pilot lights in operation.
b With appliances in operation.
A gas escape from the breather hole of a regulator indicates:
a Faulty spring.
b Bent spindle.
c Split diaphragm.
d Worn valve seating.
c Split diaphragm.
Governor ‘lock up’ will occur:
a When all appliances and pilots are turned off.
b When there is a gas escape on the supply.
c When the inlet pressure to the regulator is greater than 50mbar
d When the supply to the regulator has been turned off.
a When all appliances and pilots are turned off.
To increase the outlet pressure of a meter regulator you must:
a Increase the pressure on the spring.
b Decrease the pressure on the spring.
c Meter regulator is factory set.
d Acquire specialist tools from the manufacturer.
a Increase the pressure on the spring.
The breather hole of a meter regulator is provided:
a To allow the diaphragm to move up and down.
b To compensate tor changes in atmospheric pressure.
c To allow a vent should ‘lock up’ occur.
d To allow a vent for when inlet pressure is too high.
a To allow the diaphragm to move up and down.
The working pressure of a domestic meter regulator should pre set at:
a 20mbar to +/-2mbar.
b 21 mbar to +/-2mbar.
c 25mbar to +/-2mbar.
d Is dependent upon the number of appliances fitted.
b 21 mbar to +/-2mbar.
Standing pressure is that pressure measured when:
Answer…..
There is not gas flowing
What is medium pressure gas?
a Above 2 bar.
b Below 75mbar.
c The same as low pressure.
d Above 75mbar but below 2 bar.
d Above 75mbar but below 2 bar.
Domestic medium to low pressure meter installations need to be located outside of the property in what?
a A surface mounted meter box.
b A built-in (flush mounted) meter box.
c A purpose built housing.
d Any of the above.
d Any of the above.
