Module 7.1 Knowledge Questions Flashcards

1
Q

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.

A

b With appliances in operation.

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2
Q

A gas escape from the breather hole of a regulator indicates:

a Faulty spring.
b Bent spindle.
c Split diaphragm.
d Worn valve seating.

A

c Split diaphragm.

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3
Q

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

a When all appliances and pilots are turned off.

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4
Q

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

a Increase the pressure on the spring.

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5
Q

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

a To allow the diaphragm to move up and down.

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6
Q

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.

A

b 21 mbar to +/-2mbar.

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7
Q

Standing pressure is that pressure measured when:

Answer…..

A

There is not gas flowing

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8
Q

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.

A

d Above 75mbar but below 2 bar.

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9
Q

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.

A

d Any of the above.

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