ICC U2 UST Decommissioning Exam Questions 2025
1. Under ground _______________ storage systems are not longer needed or suitable
for product storage must be properly disposed of properly - ANS-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. - ANS-A.
True
B. False
Answer: True.
3. All applicable permits must be obtained prior to beginning any work. - ANS-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. - ANS-List three
____________ ______________ _______________
5. What are some syntomes of inhaling or obsorbing high levels of petroleum
hydorocarbon vapors. - ANS-List three
_____________ _______________ ____________
Dizziness excitement, unconsciousness
6. Artificial resporation should be applied if - ANS-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. - ANS-List three
_____________ _________________ ______________
8. Hiogh ocupational exposures to benezene have been associated with various human
blood disorders - ANS-True/False
AnswerTrue
9. Smoking matterials or any flamable materials must be reamoved from the job site in
order to prevent - ANS-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. - ANS-_____________________________________
Answer: Combustible gas indicator
11. All tools that are in areas with hazardous vapor concentartions should be shut down
or they should be ________________ proof. - ANS-__________________
answer Explosion
12. Undergroud storage tanks are considered temerarially out of service if they are idle
but will return to service in ____ years. - ANS-______
answer 1
13. Undergroud storage tanks are considered temerarially out of service if they are -
ANS-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 - ANS-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. - ANS-
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. -
ANS-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 - ANS-________________
Answer Water
18. When temporarily putting a tank out of service what lines should be left open. -
ANS-______________ ____________
Vent Lines
19. Lead compounds and other residues in the tank may be classified
as_____________ waste. - ANS-A. Collective
B. Controllable
C. Hazardous
D. Corrosive
Answer C
20. Remove liquids and residues from the tank by using ______________
_____________ or air driven pumps. - ANS-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. - ANS-A. Road
B. Mistral
C. Wind
D. B and C
Answer C
22. When filling a tank with sand for a closure in place a nominal amount of water
should be used. Why - ANS-
______________________________________________________________________
_________
______________________________________________________________________
_________
23. Almost a complete filling of the tank can be achieved by filing it with a combination
of sand and ________________ - ANS-A. Crushed Rock
B. Cachinnate
C. Yerk
D. Earth
Answer D
24. When under ground tanks are disposed in place the owner of the tank should keep
a permanent record of the tank location, the date of disposal in place, and the method of
conditioning the tank for disposal. - ANS-Why
, ______________________________________________________________________
______
25. To remove the tank of vapors remove the fill pipe, gauge pipe, vapor recovery truck
connection, submersible pumps, and other tank fixtures. - ANS-
26. Vent all vapors from the tank at a minimum height of 12 feet above grade and 3 feet
about any adjacent roof lines until the tank is purged of flammable vapors. - ANS-
________ feet ________ Feet
27. When purging a tank of gasses the area should be kept free of gases by using
ventilation, specifically an _______________ type air mover. - ANS-A. Teacher
B. Osculate
C. Educator
D. Cantankerous
Answer C
28. Fill (drop) tubes must be removed to allow proper _________________ of the air in
the tank. - ANS-A. Lugubrious
B. Debauchery
C. Farrago
D. Diffusion
Answer D
29. What is the safest and simplest methods for vapor-freeing a tank. - ANS-
_____________________
Answer by adding water.
30. When using water for vapor freeing what is one reason that this method may
become prohibited. - ANS-A. The high cost of water
B. Treatment/disposal
C. Transportation of the water
D. All of the above
Answer B
31. During the prossess of water filling a tank exessive amounts of flammable vapors
will be expleed throught the fill opping. What is one way to temporarily minimize the
escape. - ANS-A. Temporarily cap the oppening
B. Using an educator type air mover
C. Fill the tank slowly
D. A and C
Answer A
32. Steam can be used to clean and vapor-free a tank. However, a large ___________
_______________ can build up on the nozzle of the steam jet. This can make steam
1. Under ground _______________ storage systems are not longer needed or suitable
for product storage must be properly disposed of properly - ANS-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. - ANS-A.
True
B. False
Answer: True.
3. All applicable permits must be obtained prior to beginning any work. - ANS-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. - ANS-List three
____________ ______________ _______________
5. What are some syntomes of inhaling or obsorbing high levels of petroleum
hydorocarbon vapors. - ANS-List three
_____________ _______________ ____________
Dizziness excitement, unconsciousness
6. Artificial resporation should be applied if - ANS-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. - ANS-List three
_____________ _________________ ______________
8. Hiogh ocupational exposures to benezene have been associated with various human
blood disorders - ANS-True/False
AnswerTrue
9. Smoking matterials or any flamable materials must be reamoved from the job site in
order to prevent - ANS-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. - ANS-_____________________________________
Answer: Combustible gas indicator
11. All tools that are in areas with hazardous vapor concentartions should be shut down
or they should be ________________ proof. - ANS-__________________
answer Explosion
12. Undergroud storage tanks are considered temerarially out of service if they are idle
but will return to service in ____ years. - ANS-______
answer 1
13. Undergroud storage tanks are considered temerarially out of service if they are -
ANS-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 - ANS-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. - ANS-
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. -
ANS-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 - ANS-________________
Answer Water
18. When temporarily putting a tank out of service what lines should be left open. -
ANS-______________ ____________
Vent Lines
19. Lead compounds and other residues in the tank may be classified
as_____________ waste. - ANS-A. Collective
B. Controllable
C. Hazardous
D. Corrosive
Answer C
20. Remove liquids and residues from the tank by using ______________
_____________ or air driven pumps. - ANS-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. - ANS-A. Road
B. Mistral
C. Wind
D. B and C
Answer C
22. When filling a tank with sand for a closure in place a nominal amount of water
should be used. Why - ANS-
______________________________________________________________________
_________
______________________________________________________________________
_________
23. Almost a complete filling of the tank can be achieved by filing it with a combination
of sand and ________________ - ANS-A. Crushed Rock
B. Cachinnate
C. Yerk
D. Earth
Answer D
24. When under ground tanks are disposed in place the owner of the tank should keep
a permanent record of the tank location, the date of disposal in place, and the method of
conditioning the tank for disposal. - ANS-Why
, ______________________________________________________________________
______
25. To remove the tank of vapors remove the fill pipe, gauge pipe, vapor recovery truck
connection, submersible pumps, and other tank fixtures. - ANS-
26. Vent all vapors from the tank at a minimum height of 12 feet above grade and 3 feet
about any adjacent roof lines until the tank is purged of flammable vapors. - ANS-
________ feet ________ Feet
27. When purging a tank of gasses the area should be kept free of gases by using
ventilation, specifically an _______________ type air mover. - ANS-A. Teacher
B. Osculate
C. Educator
D. Cantankerous
Answer C
28. Fill (drop) tubes must be removed to allow proper _________________ of the air in
the tank. - ANS-A. Lugubrious
B. Debauchery
C. Farrago
D. Diffusion
Answer D
29. What is the safest and simplest methods for vapor-freeing a tank. - ANS-
_____________________
Answer by adding water.
30. When using water for vapor freeing what is one reason that this method may
become prohibited. - ANS-A. The high cost of water
B. Treatment/disposal
C. Transportation of the water
D. All of the above
Answer B
31. During the prossess of water filling a tank exessive amounts of flammable vapors
will be expleed throught the fill opping. What is one way to temporarily minimize the
escape. - ANS-A. Temporarily cap the oppening
B. Using an educator type air mover
C. Fill the tank slowly
D. A and C
Answer A
32. Steam can be used to clean and vapor-free a tank. However, a large ___________
_______________ can build up on the nozzle of the steam jet. This can make steam
