ICC U2 UST DECOMMISSIONING EXAM QUESTIONS
2026/2027 | ACTUAL QUESTIONS AND ANSWERS
LATEST(GRADED A+)
UPDATED 2024/2025
1. Under ground _______________ storage systems are not longer needed or suitable for product
storage must be properly disposed of properly - (ANSWER)A. Gas
B. Oil
C. Petroleum
D. All of the above
Answer. C
2. All work that is completed at the site must be accomplished in accordance with federal, state,
and local requirements as well as accepted safety standards. - (ANSWER)A. True
B. False
Answer: True.
3. All applicable permits must be obtained prior to beginning any work. - (ANSWER)A. True
B. False
Answer True.
4. What is the hazard that removers of petroleum tanks are faced with, dangers such as petroleum
hydrocarbon liquids vapor, or waste. - (ANSWER)List three
____________ ______________ _______________
5. What are some syntomes of inhaling or obsorbing high levels of petroleum hydorocarbon
vapors. - (ANSWER)List three
_____________ _______________ ____________
Dizziness excitement, unconsciousness
,6. Artificial resporation should be applied if - (ANSWER)A. They hit their head
B. They cant see
C. They have stopped breathing
D. They suffer from cardiac arrest
AnswerC
7. What are three parts of the body should Petroleum liquids be kept away from an example
would be eyes, skin and moulth. - (ANSWER)List three
_____________ _________________ ______________
8. Hiogh ocupational exposures to benezene have been associated with various human blood
disorders - (ANSWER)True/False
AnswerTrue
9. Smoking matterials or any flamable materials must be reamoved from the job site in order to
prevent - (ANSWER)A. People from smoking
B. Sudden compution
C. Second hand smoke
D. Exploshins indide of tanks due to large amounts of vapor
E. B and D
Answer E
10. What tool with the abbreviation CGI should be used to check for hazardous vapor
concentrations. - (ANSWER)_____________________________________
Answer: Combustible gas indicator
11. All tools that are in areas with hazardous vapor concentartions should be shut down or they
should be ________________ proof. - (ANSWER)__________________
answer Explosion
,12. Undergroud storage tanks are considered temerarially out of service if they are idle but will
return to service in ____ years. - (ANSWER)______
answer 1
13. Undergroud storage tanks are considered temerarially out of service if they are -
(ANSWER)A. Idle but will return to service within one year
B. Are awaiting abandonement in place
C. Are waiting for reamoval
D. All of the above
Answer D
14. Tanks that are out of service must be - (ANSWER)A. Checked routinely
C. Filled with sand
B. Properly secured
D. A and B
Answer B
15. When removing an under ground tank what method for removal is preferred. - (ANSWER)A.
Removal of the tank
B. Closure in place
Answer B
16. Choose the reasons that a closure in place would be preferred over a removal. -
(ANSWER)A. Because of the tank location, adjacent equipment or structures may be damaged
or weakened if the tank is removed.
B. It would do a lot of damage to the clients lawn
C. Removal is impossible
D. There is no equipment that is capable of removing the tank
E. Removal may incur excessive costs
, Answer A, C, E
17. You should remove all stored liquid and ballast the tank by filin git with water when high
_____________ levels occur - (ANSWER)________________
Answer Water
18. When temporarily putting a tank out of service what lines should be left open. -
(ANSWER)______________ ____________
Vent Lines
19. Lead compounds and other residues in the tank may be classified as_____________ waste. -
(ANSWER)A. Collective
B. Controllable
C. Hazardous
D. Corrosive
Answer C
20. Remove liquids and residues from the tank by using ______________ _____________ or air
driven pumps. - (ANSWER)A. Safety Reg
B. Explosion Proof
C.
Answer B
21. If a vacuum truck is used for removal of liquids and residues it should be positioned up
_____________ wind of the tank. - (ANSWER)A. Road
B. Mistral
C. Wind
D. B and C
Answer C
2026/2027 | ACTUAL QUESTIONS AND ANSWERS
LATEST(GRADED A+)
UPDATED 2024/2025
1. Under ground _______________ storage systems are not longer needed or suitable for product
storage must be properly disposed of properly - (ANSWER)A. Gas
B. Oil
C. Petroleum
D. All of the above
Answer. C
2. All work that is completed at the site must be accomplished in accordance with federal, state,
and local requirements as well as accepted safety standards. - (ANSWER)A. True
B. False
Answer: True.
3. All applicable permits must be obtained prior to beginning any work. - (ANSWER)A. True
B. False
Answer True.
4. What is the hazard that removers of petroleum tanks are faced with, dangers such as petroleum
hydrocarbon liquids vapor, or waste. - (ANSWER)List three
____________ ______________ _______________
5. What are some syntomes of inhaling or obsorbing high levels of petroleum hydorocarbon
vapors. - (ANSWER)List three
_____________ _______________ ____________
Dizziness excitement, unconsciousness
,6. Artificial resporation should be applied if - (ANSWER)A. They hit their head
B. They cant see
C. They have stopped breathing
D. They suffer from cardiac arrest
AnswerC
7. What are three parts of the body should Petroleum liquids be kept away from an example
would be eyes, skin and moulth. - (ANSWER)List three
_____________ _________________ ______________
8. Hiogh ocupational exposures to benezene have been associated with various human blood
disorders - (ANSWER)True/False
AnswerTrue
9. Smoking matterials or any flamable materials must be reamoved from the job site in order to
prevent - (ANSWER)A. People from smoking
B. Sudden compution
C. Second hand smoke
D. Exploshins indide of tanks due to large amounts of vapor
E. B and D
Answer E
10. What tool with the abbreviation CGI should be used to check for hazardous vapor
concentrations. - (ANSWER)_____________________________________
Answer: Combustible gas indicator
11. All tools that are in areas with hazardous vapor concentartions should be shut down or they
should be ________________ proof. - (ANSWER)__________________
answer Explosion
,12. Undergroud storage tanks are considered temerarially out of service if they are idle but will
return to service in ____ years. - (ANSWER)______
answer 1
13. Undergroud storage tanks are considered temerarially out of service if they are -
(ANSWER)A. Idle but will return to service within one year
B. Are awaiting abandonement in place
C. Are waiting for reamoval
D. All of the above
Answer D
14. Tanks that are out of service must be - (ANSWER)A. Checked routinely
C. Filled with sand
B. Properly secured
D. A and B
Answer B
15. When removing an under ground tank what method for removal is preferred. - (ANSWER)A.
Removal of the tank
B. Closure in place
Answer B
16. Choose the reasons that a closure in place would be preferred over a removal. -
(ANSWER)A. Because of the tank location, adjacent equipment or structures may be damaged
or weakened if the tank is removed.
B. It would do a lot of damage to the clients lawn
C. Removal is impossible
D. There is no equipment that is capable of removing the tank
E. Removal may incur excessive costs
, Answer A, C, E
17. You should remove all stored liquid and ballast the tank by filin git with water when high
_____________ levels occur - (ANSWER)________________
Answer Water
18. When temporarily putting a tank out of service what lines should be left open. -
(ANSWER)______________ ____________
Vent Lines
19. Lead compounds and other residues in the tank may be classified as_____________ waste. -
(ANSWER)A. Collective
B. Controllable
C. Hazardous
D. Corrosive
Answer C
20. Remove liquids and residues from the tank by using ______________ _____________ or air
driven pumps. - (ANSWER)A. Safety Reg
B. Explosion Proof
C.
Answer B
21. If a vacuum truck is used for removal of liquids and residues it should be positioned up
_____________ wind of the tank. - (ANSWER)A. Road
B. Mistral
C. Wind
D. B and C
Answer C
