ABNORMAL OPERATING CONDITIONS EXAM QUESTIONS ANSWERED CORRECTLY LATEST UPDATE
2026
What is the color of natural gas ? - Answers Blue
If dirt or sand is blowing around , what can be happening ? - Answers Gas is blowing / leaking
What is used to investigate odor complaints ? - Answers A CGI / Combustible Gas Indicator
If a dent is found in steel pipe what should you do? - Answers Inspect the pipe
If an explosion occurs in a man hole what could've happened? - Answers Unintentional ignition
What can damage underground gas facilities - Answers Undermining / soil erosion
What is undermining? - Answers Water compromising the integrity of the soil.
What should you do if you uncover a damaged facility? - Answers Report it to appropriate personnel
What is carbon monoxide? - Answers Byproduct of incomplete combustion
What are the characteristics of carbon monoxide ? - Answers Flammable
Lighter than air
Oderless
Toxic
Tasteless
How can you tell if a pipe is damaged ? - Answers Gouged
Bent
Cracked
Broken
What can be said if there is flooding in a street and a high-pressure gas leak? - Answers Undermining
has occurred
What makes natural gas expand and contract? - Answers The temperature
What is the main component found in natural gas ? - Answers Methane
Compressing natural gas does what ? - Answers Increase pressure and density
What does venting mean? - Answers Blowing
If a regulator is venting gas what should you do ? - Answers Inform supervision
What is the lower explosive limit for gas (LEL) ? - Answers 5% gas in air
What the upper explosive limit (UEL) ? - Answers 15% gas in air
What are PCB's? - Answers Polychlorinated Biphenyls
How would you dispose of PCB's? - Answers In a company approved container
If you have a fire in the street , how far should you sucker the area ? - Answers Minimum of 25ft
If a gauge is reading lower pressure than normal, what could this be classified as? - Answers Abnormal
operating conditions
What can cause lower than normal pressure? - Answers Water in the main / undersized pipe
What could Be happening if customers say they are not getting gas? - Answers Water in main / not
enough pressure
What should be done immediately is a gas explosion occurs? - Answers Check in with supervisor
Above normal pressure at a regulator can do what? - Answers Cause the regulator to vent
If a higher than expected reading in found what should you do? - Answers Let supervision know
What is under-odorization? - Answers Not enough mercaptan in the gas
When can under-odorlization happen? - Answers At the gate station if system is left in manual mode
Human error
What is normal pressure going into regulators? - Answers 7 inches water column
How much pounds per square inches is 7inches water column? - Answers 1/4 PSI
What does CNG stand for ? - Answers Compressed natural gas
What does LNG stand for ? - Answers Liquefied Natural Gas
What is the gravity of natural gas ? - Answers .60
What are the characteristics of natural gas ? - Answers Flammable
Lighter than air
Oderless
Non toxic
Colorless
What creates a blue flame ? - Answers 10 parts air
1 part fuel
1200 degree temp
2026
What is the color of natural gas ? - Answers Blue
If dirt or sand is blowing around , what can be happening ? - Answers Gas is blowing / leaking
What is used to investigate odor complaints ? - Answers A CGI / Combustible Gas Indicator
If a dent is found in steel pipe what should you do? - Answers Inspect the pipe
If an explosion occurs in a man hole what could've happened? - Answers Unintentional ignition
What can damage underground gas facilities - Answers Undermining / soil erosion
What is undermining? - Answers Water compromising the integrity of the soil.
What should you do if you uncover a damaged facility? - Answers Report it to appropriate personnel
What is carbon monoxide? - Answers Byproduct of incomplete combustion
What are the characteristics of carbon monoxide ? - Answers Flammable
Lighter than air
Oderless
Toxic
Tasteless
How can you tell if a pipe is damaged ? - Answers Gouged
Bent
Cracked
Broken
What can be said if there is flooding in a street and a high-pressure gas leak? - Answers Undermining
has occurred
What makes natural gas expand and contract? - Answers The temperature
What is the main component found in natural gas ? - Answers Methane
Compressing natural gas does what ? - Answers Increase pressure and density
What does venting mean? - Answers Blowing
If a regulator is venting gas what should you do ? - Answers Inform supervision
What is the lower explosive limit for gas (LEL) ? - Answers 5% gas in air
What the upper explosive limit (UEL) ? - Answers 15% gas in air
What are PCB's? - Answers Polychlorinated Biphenyls
How would you dispose of PCB's? - Answers In a company approved container
If you have a fire in the street , how far should you sucker the area ? - Answers Minimum of 25ft
If a gauge is reading lower pressure than normal, what could this be classified as? - Answers Abnormal
operating conditions
What can cause lower than normal pressure? - Answers Water in the main / undersized pipe
What could Be happening if customers say they are not getting gas? - Answers Water in main / not
enough pressure
What should be done immediately is a gas explosion occurs? - Answers Check in with supervisor
Above normal pressure at a regulator can do what? - Answers Cause the regulator to vent
If a higher than expected reading in found what should you do? - Answers Let supervision know
What is under-odorization? - Answers Not enough mercaptan in the gas
When can under-odorlization happen? - Answers At the gate station if system is left in manual mode
Human error
What is normal pressure going into regulators? - Answers 7 inches water column
How much pounds per square inches is 7inches water column? - Answers 1/4 PSI
What does CNG stand for ? - Answers Compressed natural gas
What does LNG stand for ? - Answers Liquefied Natural Gas
What is the gravity of natural gas ? - Answers .60
What are the characteristics of natural gas ? - Answers Flammable
Lighter than air
Oderless
Non toxic
Colorless
What creates a blue flame ? - Answers 10 parts air
1 part fuel
1200 degree temp
