KENTUCKY UST CERTIFICATION
TEST PREP EXAM (UPDATED
2025) QUESTIONS & ANSWERS |
LATEST ALREADY GRADED A+
UPDATE 2025|2026
1. When tanks arrive at the job site, how should they be unloaded?
A. Rolled off the truck
B. Lifted with a cable attached to the tank lifting lugs ✅
C. Dragged with chains
D. Pulled manually
Rationale: Using lifting lugs ensures the tank is safely handled without damaging its structure.
2. As an alternative lifting method, should a cable or chain be wrapped around the tank?
A. Yes, if lifting lugs are unavailable
B. No, never ✅
C. Only for FRP tanks
D. Only in emergencies
Rationale: Wrapping cables or chains around tanks can damage the tank walls and compromise
safety.
3. When lifting a tank using lifting lugs, which procedure should be followed?
A. Attach a cable at any angle
B. Use multiple chains crossing each other
C. Attach a triangle cable through the lugs with no more than a 30-degree angle from the center
line ✅
D. Lift without a cable
Rationale: Limiting the angle prevents stress on the lifting lugs and tank body.
4. After unloading a new tank on a clean level surface, what should be done prior to
inspection and pre-testing?
A. Apply primer to the surface
B. Chock the tank to prevent rolling ✅
C. Spray the tank with water
D. Start filling with liquid immediately
Rationale: Chocking prevents accidental movement that could cause damage or injury.
1
,5. Which items should be physically checked for damage or imperfections at the job site?
A. Piping (steel and fiberglass)
B. Fittings, vents, fillboxes, anodes
C. The tanks themselves
D. All of the above ✅
Rationale: Inspecting all components ensures the system is safe and functional before
installation.
6. STI-P3 tanks are delivered with shipping plugs in openings. What should be done to
these plugs prior to testing?
A. Leave them in place
B. Remove and replace with a standard threaded plug that is properly doped ✅
C. Seal with tape
D. Drill additional vent holes
Rationale: Proper plugs ensure airtight testing and prevent leaks.
7. Should dielectric bushings be installed in all openings of an STI-P3 tank?
A. Yes, on all openings ✅
B. No, only on top openings
C. Only on steel tanks
D. Optional based on installer preference
Rationale: Ensures proper electrical isolation and corrosion protection.
8. What is the maximum air pressure a steel tank should be subjected to in a pre-
installation test?
A. 2 pounds
B. 5 pounds ✅
C. 10 pounds
D. 15 pounds
Rationale: Exceeding this pressure may damage the tank or coating.
9. For FRP tanks up to 12 feet in diameter, what is the acceptable air pressure for pre-
installation testing?
A. 1 pound
B. 3 pounds ✅
C. 5 pounds
D. 10 pounds
Rationale: Limiting pressure prevents structural damage to FRP tanks.
10. For FRP tanks over 12 feet in diameter, what is the maximum air pressure for pre-
installation testing?
A. 1 pound
B. 3 pounds ✅
C. 5 pounds
2
, D. 10 pounds
Rationale: Pressure is kept low to maintain structural integrity of larger tanks.
11. When conducting an air test on a tank, which type of gauge should be used?
A. Any gauge available
B. A pressure gauge with a maximum limit of 10 to 15 PSIG ✅
C. Hydraulic pressure gauge
D. Thermometer
Rationale: Limiting the gauge ensures accurate measurement without over-pressurizing the tank.
12. What is the proper procedure for pre-installation air testing of a steel tank?
A. Apply 10 pounds of pressure and inspect visually
B. Apply 3 to 5 pounds of pressure, soap all surfaces and weld seams visible through the coating
while inspecting for bubbles ✅
C. Fill with water and check for leaks
D. Heat the tank and inspect seams
Rationale: Soap solution allows detection of small leaks without damaging the tank.
13. What is the proper procedure for pre-installation air testing of an FRP tank under 12
feet in diameter?
A. Apply 1 pound of air pressure
B. Apply 3 pounds of air pressure and soap all surfaces while inspecting for leaks ✅
C. Fill with water only
D. Only inspect for visible cracks
Rationale: Ensures structural integrity while avoiding excessive stress on FRP material.
14. A double-walled steel tank built in accordance with UL Standard 58 is required to:
A. Be filled with water for testing
B. Require air testing of the interstitial space prior to installation ✅
C. Have a reinforced concrete pad
D. Use only steel piping
Rationale: Air testing of the interstitial space detects leaks between walls and prevents
environmental contamination.
15. How is a pre-installation air test of a double-walled tank conducted?
A. Pressurize the inner tank and leave the outer unpressurized
B. Pressurize inner tank, monitor for 1 hour, then pressurize space between tanks using air from
inner tank ✅
C. Fill with water for 24 hours
D. Only inspect outer tank visually
Rationale: This method tests both the inner and interstitial spaces to ensure leak-free
installation.
3
TEST PREP EXAM (UPDATED
2025) QUESTIONS & ANSWERS |
LATEST ALREADY GRADED A+
UPDATE 2025|2026
1. When tanks arrive at the job site, how should they be unloaded?
A. Rolled off the truck
B. Lifted with a cable attached to the tank lifting lugs ✅
C. Dragged with chains
D. Pulled manually
Rationale: Using lifting lugs ensures the tank is safely handled without damaging its structure.
2. As an alternative lifting method, should a cable or chain be wrapped around the tank?
A. Yes, if lifting lugs are unavailable
B. No, never ✅
C. Only for FRP tanks
D. Only in emergencies
Rationale: Wrapping cables or chains around tanks can damage the tank walls and compromise
safety.
3. When lifting a tank using lifting lugs, which procedure should be followed?
A. Attach a cable at any angle
B. Use multiple chains crossing each other
C. Attach a triangle cable through the lugs with no more than a 30-degree angle from the center
line ✅
D. Lift without a cable
Rationale: Limiting the angle prevents stress on the lifting lugs and tank body.
4. After unloading a new tank on a clean level surface, what should be done prior to
inspection and pre-testing?
A. Apply primer to the surface
B. Chock the tank to prevent rolling ✅
C. Spray the tank with water
D. Start filling with liquid immediately
Rationale: Chocking prevents accidental movement that could cause damage or injury.
1
,5. Which items should be physically checked for damage or imperfections at the job site?
A. Piping (steel and fiberglass)
B. Fittings, vents, fillboxes, anodes
C. The tanks themselves
D. All of the above ✅
Rationale: Inspecting all components ensures the system is safe and functional before
installation.
6. STI-P3 tanks are delivered with shipping plugs in openings. What should be done to
these plugs prior to testing?
A. Leave them in place
B. Remove and replace with a standard threaded plug that is properly doped ✅
C. Seal with tape
D. Drill additional vent holes
Rationale: Proper plugs ensure airtight testing and prevent leaks.
7. Should dielectric bushings be installed in all openings of an STI-P3 tank?
A. Yes, on all openings ✅
B. No, only on top openings
C. Only on steel tanks
D. Optional based on installer preference
Rationale: Ensures proper electrical isolation and corrosion protection.
8. What is the maximum air pressure a steel tank should be subjected to in a pre-
installation test?
A. 2 pounds
B. 5 pounds ✅
C. 10 pounds
D. 15 pounds
Rationale: Exceeding this pressure may damage the tank or coating.
9. For FRP tanks up to 12 feet in diameter, what is the acceptable air pressure for pre-
installation testing?
A. 1 pound
B. 3 pounds ✅
C. 5 pounds
D. 10 pounds
Rationale: Limiting pressure prevents structural damage to FRP tanks.
10. For FRP tanks over 12 feet in diameter, what is the maximum air pressure for pre-
installation testing?
A. 1 pound
B. 3 pounds ✅
C. 5 pounds
2
, D. 10 pounds
Rationale: Pressure is kept low to maintain structural integrity of larger tanks.
11. When conducting an air test on a tank, which type of gauge should be used?
A. Any gauge available
B. A pressure gauge with a maximum limit of 10 to 15 PSIG ✅
C. Hydraulic pressure gauge
D. Thermometer
Rationale: Limiting the gauge ensures accurate measurement without over-pressurizing the tank.
12. What is the proper procedure for pre-installation air testing of a steel tank?
A. Apply 10 pounds of pressure and inspect visually
B. Apply 3 to 5 pounds of pressure, soap all surfaces and weld seams visible through the coating
while inspecting for bubbles ✅
C. Fill with water and check for leaks
D. Heat the tank and inspect seams
Rationale: Soap solution allows detection of small leaks without damaging the tank.
13. What is the proper procedure for pre-installation air testing of an FRP tank under 12
feet in diameter?
A. Apply 1 pound of air pressure
B. Apply 3 pounds of air pressure and soap all surfaces while inspecting for leaks ✅
C. Fill with water only
D. Only inspect for visible cracks
Rationale: Ensures structural integrity while avoiding excessive stress on FRP material.
14. A double-walled steel tank built in accordance with UL Standard 58 is required to:
A. Be filled with water for testing
B. Require air testing of the interstitial space prior to installation ✅
C. Have a reinforced concrete pad
D. Use only steel piping
Rationale: Air testing of the interstitial space detects leaks between walls and prevents
environmental contamination.
15. How is a pre-installation air test of a double-walled tank conducted?
A. Pressurize the inner tank and leave the outer unpressurized
B. Pressurize inner tank, monitor for 1 hour, then pressurize space between tanks using air from
inner tank ✅
C. Fill with water for 24 hours
D. Only inspect outer tank visually
Rationale: This method tests both the inner and interstitial spaces to ensure leak-free
installation.
3
