Purging Mediums

Question 1

Air is used to purge pipe with diameters of _______ and less out of services.

Answer 1

4”

Question 2

Natural gas is used to purge pipe with diameters of _______ and less into service.

Answer 2

4”

Question 3

Nitrogen is an ________ gas, which means it doesn’t react with many other gases, including air and natural gas.

Answer 3

Inert

Question 4

Nitrogen is used to purge pipe with diameters greater than ________ into or out of service.

Answer 4

4”