Chapter 6 - Tightness Testing & Purging

Question 1

Tightness Testing & Purging document and current Edition?

Answer 1

IGEM/UP/1B

Edition 3

Question 2

Total installation volume (IV) of any meters, pipework and fittings supplying any individual dwelling must not exceed?

Answer 2

Max IV - 0.035 m³

Question 3

What 4 things for permissible drop

Permissible drop is drop in pressure a small gas escape.

Answer 3

• Size of the meter/type
• Diameter of the Pipework
• Existing appliance or appliances
• No smell of gas

Question 4

Purge Procedure

Less than 0.02 m³ ?
More than 0.02 m³ ?

Answer 4

Less than; The gas may be purge either through an open burner or loosened fitting (crack a union) on the gas installation

Greater than; The gas shall be purged through an open burner with a constant source of ignition.

Question 5

When purging which appliance should be used?

Answer 5

The furthest appliance away from the meter.

Question 6

When testing the working pressure which appliance should be used?

Answer 6

The biggest KW appliance.