ICC U1 Underground
Storage Tank Installer
Exam Questions And
Correct Answers
(Verified Answers)
Plus Rationales
2025/2026 Q&A |
Instant Download Pdf
1. The primary purpose of an underground storage tank
(UST) is to:
A. Store drinking water
B. Store hazardous waste only
C. Store petroleum or hazardous liquids underground
D. Store sewage
,Answer: C
USTs are primarily designed to store petroleum products or
hazardous liquids below ground level.
2. A UST system includes the tank and:
A. Only vent pipes
B. Only pumps
C. Connected piping and ancillary equipment
D. Electrical panels only
Answer: C
UST systems include tanks, piping, fittings, vents, and other
connected equipment.
3. Tanks installed below grade must be designed to resist:
A. Fire exposure only
B. Soil loads and hydrostatic pressure
C. Wind pressure
D. Vibration only
Answer: B
Underground tanks must withstand soil loads and
groundwater pressure.
4. Before installation, tanks should be inspected for:
A. Paint color
B. Shipping damage
,C. Manufacturer label only
D. Vent openings
Answer: B
Inspecting for shipping damage ensures structural integrity
before installation.
5. Bedding material for UST installation should be:
A. Clay soil
B. Organic soil
C. Clean sand or pea gravel
D. Wet soil
Answer: C
Clean sand or pea gravel provides proper support and
drainage.
6. The minimum bedding thickness under most USTs is
typically:
A. 2 inches
B. 6 inches
C. 12 inches
D. 24 inches
Answer: B
Six inches of bedding material is commonly required for
proper support.
, 7. Backfill material should be:
A. Debris-filled soil
B. Sharp rocks
C. Clean, non-corrosive material
D. Organic waste
Answer: C
Clean material prevents damage to tank coatings and
piping.
8. The purpose of tank anchoring is to:
A. Improve tank color
B. Prevent tank flotation
C. Improve venting
D. Reduce corrosion
Answer: B
Anchoring prevents tanks from floating when groundwater
rises.
9. Buoyancy forces occur due to:
A. Air pressure
B. Soil compaction
C. Groundwater
D. Temperature
Answer: C
Groundwater exerts upward pressure causing flotation risk.
Storage Tank Installer
Exam Questions And
Correct Answers
(Verified Answers)
Plus Rationales
2025/2026 Q&A |
Instant Download Pdf
1. The primary purpose of an underground storage tank
(UST) is to:
A. Store drinking water
B. Store hazardous waste only
C. Store petroleum or hazardous liquids underground
D. Store sewage
,Answer: C
USTs are primarily designed to store petroleum products or
hazardous liquids below ground level.
2. A UST system includes the tank and:
A. Only vent pipes
B. Only pumps
C. Connected piping and ancillary equipment
D. Electrical panels only
Answer: C
UST systems include tanks, piping, fittings, vents, and other
connected equipment.
3. Tanks installed below grade must be designed to resist:
A. Fire exposure only
B. Soil loads and hydrostatic pressure
C. Wind pressure
D. Vibration only
Answer: B
Underground tanks must withstand soil loads and
groundwater pressure.
4. Before installation, tanks should be inspected for:
A. Paint color
B. Shipping damage
,C. Manufacturer label only
D. Vent openings
Answer: B
Inspecting for shipping damage ensures structural integrity
before installation.
5. Bedding material for UST installation should be:
A. Clay soil
B. Organic soil
C. Clean sand or pea gravel
D. Wet soil
Answer: C
Clean sand or pea gravel provides proper support and
drainage.
6. The minimum bedding thickness under most USTs is
typically:
A. 2 inches
B. 6 inches
C. 12 inches
D. 24 inches
Answer: B
Six inches of bedding material is commonly required for
proper support.
, 7. Backfill material should be:
A. Debris-filled soil
B. Sharp rocks
C. Clean, non-corrosive material
D. Organic waste
Answer: C
Clean material prevents damage to tank coatings and
piping.
8. The purpose of tank anchoring is to:
A. Improve tank color
B. Prevent tank flotation
C. Improve venting
D. Reduce corrosion
Answer: B
Anchoring prevents tanks from floating when groundwater
rises.
9. Buoyancy forces occur due to:
A. Air pressure
B. Soil compaction
C. Groundwater
D. Temperature
Answer: C
Groundwater exerts upward pressure causing flotation risk.
