ICC U1 Underground Storage
Tank Installer Exam Questions
And Correct Answers
(Verified Answers) Plus
Rationales 2025/2026 Q&A |
Instant Download Pdf
1. What is the primary purpose of an underground storage
tank (UST) system?
A. To store hazardous waste only
B. To store petroleum or hazardous substances
underground
C. To distribute water to buildings
D. To treat wastewater
Answer: B
UST systems are designed to store petroleum products or
hazardous substances below ground level.
2. Which component connects the UST to the dispensing
system?
A. Vent pipe
B. Tank collar
,C. Piping system
D. Tank lid
Answer: C
Piping transports product from the tank to dispensing
equipment.
3. What material is commonly used to prevent corrosion in
steel tanks?
A. Paint only
B. Cathodic protection
C. Concrete coating
D. Plastic liner
Answer: B
Cathodic protection prevents corrosion by controlling
electrochemical reactions.
4. Before installing a UST, what must be verified about the
excavation site?
A. Soil color
B. Distance from buildings only
C. Proper depth and dimensions
D. Weather forecast
Answer: C
Excavation must meet specified depth and size requirements
to ensure proper installation.
,5. What is the purpose of bedding material beneath a UST?
A. Decoration
B. Provide uniform support
C. Increase tank weight
D. Prevent freezing
Answer: B
Bedding distributes load evenly and prevents stress on the
tank.
6. Which bedding material is most commonly
recommended?
A. Clay
B. Topsoil
C. Gravel with debris
D. Clean sand or pea gravel
Answer: D
Clean, compactable material supports the tank and reduces
damage risk.
7. What is the minimum requirement before lowering a
tank into excavation?
A. Paint inspection
B. Inspection for damage
C. Soil testing
D. Fill pipe installation
, Answer: B
Inspecting tanks ensures no cracks or defects exist before
placement.
8. Who is responsible for ensuring UST installation complies
with regulations?
A. Tank manufacturer
B. Installer
C. Delivery driver
D. Property owner only
Answer: B
The installer must follow applicable codes and standards.
9. What is the purpose of vent piping?
A. Drain water
B. Deliver product
C. Allow air/vapor movement during filling
D. Prevent leaks
Answer: C
Vent pipes prevent pressure buildup or vacuum conditions.
10. What must be done to tanks before backfilling begins?
A. Fill completely
B. Paint exterior
Tank Installer Exam Questions
And Correct Answers
(Verified Answers) Plus
Rationales 2025/2026 Q&A |
Instant Download Pdf
1. What is the primary purpose of an underground storage
tank (UST) system?
A. To store hazardous waste only
B. To store petroleum or hazardous substances
underground
C. To distribute water to buildings
D. To treat wastewater
Answer: B
UST systems are designed to store petroleum products or
hazardous substances below ground level.
2. Which component connects the UST to the dispensing
system?
A. Vent pipe
B. Tank collar
,C. Piping system
D. Tank lid
Answer: C
Piping transports product from the tank to dispensing
equipment.
3. What material is commonly used to prevent corrosion in
steel tanks?
A. Paint only
B. Cathodic protection
C. Concrete coating
D. Plastic liner
Answer: B
Cathodic protection prevents corrosion by controlling
electrochemical reactions.
4. Before installing a UST, what must be verified about the
excavation site?
A. Soil color
B. Distance from buildings only
C. Proper depth and dimensions
D. Weather forecast
Answer: C
Excavation must meet specified depth and size requirements
to ensure proper installation.
,5. What is the purpose of bedding material beneath a UST?
A. Decoration
B. Provide uniform support
C. Increase tank weight
D. Prevent freezing
Answer: B
Bedding distributes load evenly and prevents stress on the
tank.
6. Which bedding material is most commonly
recommended?
A. Clay
B. Topsoil
C. Gravel with debris
D. Clean sand or pea gravel
Answer: D
Clean, compactable material supports the tank and reduces
damage risk.
7. What is the minimum requirement before lowering a
tank into excavation?
A. Paint inspection
B. Inspection for damage
C. Soil testing
D. Fill pipe installation
, Answer: B
Inspecting tanks ensures no cracks or defects exist before
placement.
8. Who is responsible for ensuring UST installation complies
with regulations?
A. Tank manufacturer
B. Installer
C. Delivery driver
D. Property owner only
Answer: B
The installer must follow applicable codes and standards.
9. What is the purpose of vent piping?
A. Drain water
B. Deliver product
C. Allow air/vapor movement during filling
D. Prevent leaks
Answer: C
Vent pipes prevent pressure buildup or vacuum conditions.
10. What must be done to tanks before backfilling begins?
A. Fill completely
B. Paint exterior
