Gas And Piping

Question 1

What is the gas distribution piping system

Answer 1

Gas well-
Production piping-
Gas plan
Gas transmission line-
Utility metering station
Gas main-
Service piping
Building supply
Finish piping
(5 psi drop per)

Question 2

What is the Pressure testing meters min and max range

Answer 2

15%min
300%max

Question 3

Service meter must be at least

Answer 3

3”

Question 4

How long do you pressure test pipe that is rated for 2 working psi 200 meters or less

Answer 4

15 min on 15 psi

Question 5

How long do you pressure test pipe that is rated for up to 2 psi and more than 200 feet long

Answer 5

15 psi for 60 mins

Question 6

How long do you pressure test pipe that is rated for over 2 psi and less then 200 feet

Answer 6

50 psi for 60 mins

Question 7

How long do you pressure test pipe that is rated for over 2 psi and over 200 ft long

Answer 7

50 psi for 180 minutes

Question 8

How long do you pressure test pipe that is rated for over 33 psi and any length

Answer 8

1.5 times maximum operating pressure for 180 minutes

Question 9

What instrument do you use to test finished pressure

Answer 9

Manometer

Question 10

Test the valve

Answer 10

Train

Question 11

Water has a density of

Answer 11

62.4 lbs/cubft

Question 12

Gas main line has a pressure of

Answer 12

12-80psig

Question 13

Building supply piping has a wc

Answer 13

7-14” WC

Question 14

Finish piping has a wc

Answer 14

3-4WC

Question 15

Standing pressure is

Answer 15

Taken between the meter and the appliance with none of the appliances firing

Question 16

Operating pressure is

Answer 16

Taken between the meter and the appliance with all appliances firing

Question 17

Pressure differential is

Answer 17

Difference between standing pressure and operating pressure

Question 18

Manifold pressure is

Answer 18

Taken between the appliance control valve and the burner while the appliance is firing

Question 19

For a propane tank the outside line must be what psig

Answer 19

5-10

Question 20

A propane tank stored outside of your house is at what psig

Answer 20

0-150 psig

Question 21

The inside pipe in your house for a propane tank stored outside is what WC

Answer 21

11-14”

Question 22

28” of water column is equal to

Answer 22

1 psiA

Question 23

Who is only allowed to work on gas meters

Answer 23

Atco employee