Gas Utilities

Question 1

What is the flammable range of natural gas?

Answer 1

4-14%

Question 2

What is the ignition temperature of natural gas?

Answer 2

1100 degrees

Question 3

What is the pressure of natural gas at the service meter?

Answer 3

1/3 psi

Question 4

What is the pressure of natural gas reduced from at the meter?

Answer 4

From 60 psi to 1/3 psi

Question 5

What does a flat washer indicate on the stopcock?

Answer 5

The service line is a plastic pipe inside a metal pipe

Question 6

What does a ring on the stopcock of a gas meter indicate?

Answer 6

A branch service

Question 7

What does a band indicate on a natural gas meter?

Answer 7

The service line is plastic

Question 8

What is the color code of natural gas pipe?

Answer 8

Yellow

Question 9

What is a curb valve also referred to as?

Answer 9

Emergency shut off valve

Question 10

Natural gas transmission lines can be what sizes? What psi can they have?

Answer 10

12-36” diameter pipes

Up to 1000 psi

Question 11

Medium pressure natural gas service lines have psi up to?

Answer 11

60 psi