Natural gas travels through three types of pipelines on its way from the wellhead to individual service laterals, which deliver it to the end user. What are the three types of pipelines?

Transmission lines carry high-pressure natural gas over long distances. Which of the following represents the typical pressure range for these lines?

The last section of pipe that carries natural gas to the customer’s meter is called the “service lateral,” or “service.” 
Select all of the following that characterize service lateral pipes:

When is it permissible for first responders to operate underground or aboveground pipeline valves?

Metering and regulating stations ensure the safe and efficient delivery of natural gas to customers. Select all of the following that characterize these stations:

True or false: Gas service meters measure the amount of gas used in a structure. Meters can be located indoors or outdoors and can be a single unit or may be joined together in a group serving multiple units, such as in an apartment complex.

True or false: All gas service meters have a regulator between the service or meter valve and the meter.

True or false: The shutoff valve for an individual meter is typically located just after the meter, where the pipe enters the structure.

How are shutoff valves arranged in buildings with multiple meters? (Select one.)

What are the three critical rules for gas service meter valves under all circumstances?