Energy and Utilities Natural Gas Systems 2

Question 1

What is 'peak shaving' in natural gas utility operations?

Accepted Answer

Using stored gas during high-demand periods to supplement pipeline supply

Answer

Removing impurities from gas during peak season

Answer

Reducing pipeline pressure in summer

Answer

Cutting gas to industrial customers first

Question 2

What is the primary safety concern when excavating near underground natural gas distribution lines?

Accepted Answer

Pipeline rupture causing gas release and fire/explosion risk

Answer

Electrical interference

Answer

Water contamination

Answer

Signal loss to SCADA systems

Question 3

Which material is commonly used for modern natural gas distribution piping in residential service lines?

Accepted Answer

Polyethylene (PE) plastic

Answer

Cast iron

Answer

Copper

Answer

Galvanized steel

Question 4

What does a pressure regulator do in a natural gas distribution system?

Accepted Answer

Reduces high transmission pressure to safe delivery pressure for customers

Answer

Adds odorant to the gas

Answer

Monitors gas quality

Answer

Shuts off gas during earthquakes

Question 5

What is 'cathodic protection' used for in the natural gas industry?

Accepted Answer

Preventing corrosion of metallic underground pipelines

Answer

Protecting workers from gas exposure

Answer

Purifying natural gas

Answer

Measuring gas flow

Question 6

What does 'therm' measure in natural gas billing?

Accepted Answer

100,000 Btu of energy

Answer

Gas pressure at the meter

Answer

Volume of gas in cubic feet

Answer

Temperature of the gas