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130+ UST Installation & Retrofitting Exam Questions with Answers | 2025/2026 | Tank Handling, Piping, Backfill, Testing, Overfill Protection & More

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This in-depth question bank features 130+ fully solved multiple-choice questions based on Underground Storage Tank (UST) Installation and Retrofitting standards, aligned with 2025/2026 compliance protocols. The document thoroughly covers the technical, regulatory, and procedural aspects of UST system installations, making it a critical resource for contractors, inspectors, environmental engineers, and compliance professionals. Each question is paired with a correct answer and often includes a rationale or specific guideline from regulatory practice. The material addresses: Causes of UST failure and leak prevention Tank handling procedures (lifting, transport, protection against damage) Piping installation, trenching, and slope calculations Backfill specifications, compaction techniques, and spacing requirements Testing protocols (air pressure testing, soap testing, vacuum, gauge calibration) Cathodic protection systems, dielectric isolation, and corrosion control Overfill protection systems (alarms, shut-off valves, vent restrictions) Secondary containment, sump construction, and leak detection systems Flood-prone area installation strategies (anchoring, water ballast, vent elevations) Vent piping, fill risers, and regulatory clearance standards Shear valve placement, flexible connectors, and trench protection This document is ideal for: UST installers and certified contractors Environmental engineers and safety compliance officers HazMat and petroleum facility operators Regulatory agency trainees and exam candidates Construction professionals involved in fuel or chemical storage infrastructure Whether preparing for certification exams, professional audits, or hands-on field application, this expertly structured guide offers precise knowledge and exam-style practice tailored to current industry and environmental standards. Keywords: UST installation exam, underground tank testing, backfill requirements, air pressure test, piping slope, trenching depth, cathodic protection, overfill protection devices, vapor recovery piping, flexible connectors, dielectric coating, tank buoyancy, sump leak detection, vent riser, tank excavation, filter fabric, warning barricades, tank anchoring, gauge calibration, corrosion prevention

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U1 UST Installation/Retrofitting
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U1 UST Installation/Retrofitting











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Written for

Institution
U1 UST Installation/Retrofitting
Course
U1 UST Installation/Retrofitting

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Uploaded on
August 29, 2025
Number of pages
37
Written in
2025/2026
Type
Exam (elaborations)
Contains
Questions & answers

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U1 UST Installation/Retrofitting
2025/2026 Exam Questions and Answers
| 100% Solved



1. One of the significant causes of leaks in underground liquid storage

systems is ____________ ________________ - 🧠 ANSWER ✔✔Improper

Installation


2. Written Plans are required to - 🧠 ANSWER ✔✔obtain permits, solicit

bids, and provide precise guidance for installers.


3. The plans should - 🧠 ANSWER ✔✔Describe the property, identify the

size and location of the tanks, indicate the liquids to be stored and provide

the location of the dispensers and piping.

4. Storage systems discussed in this recommended practice are usually

regulated by - 🧠 ANSWER ✔✔Federal, state or local agencies.

,5. All owners should ensure that the equipment to be installed meets - 🧠

ANSWER ✔✔applicable regulatory requirements before being installed


6. Consult the local authorities who have jurisdiction in the area before

storage-system plans are - 🧠 ANSWER ✔✔finalized or construction is

initiated.

7. All owners should ensure that the equipment to be installed meets all

applicable regulatory requirements before - 🧠 ANSWER ✔✔Being installed.


8. To avoid damage tanks must not be - 🧠 ANSWER ✔✔dropped, dragged,

or handled with sharp objects.

9. Tanks must not be dropped, dragged, or handled with sharp objects to

avoid - 🧠 ANSWER ✔✔Damage to the tank


10. The only time tanks really should be moved is when - 🧠 ANSWER

✔✔for inspections and testing.


11. If a tanks is damaged at all throughout the moving process it must be -

🧠 ANSWER ✔✔Repaired in accordance with the manufacture's

instructions.

,12. The proper way to move a tank is by lifting it, using the - 🧠 ANSWER

✔✔Lift lugs that are installed by the manufacturer.


13. Tanks should be carefully lifted and lowered using - 🧠 ANSWER

✔✔Cables or chains of adequate length.


14. When two lifting lugs are being used, the angle between the lifting cable

and vertical should be no more than - 🧠 ANSWER ✔✔30 degrees.


15. Stockpile piping materials and equipment in a _____________

_________ on the job site - 🧠 ANSWER ✔✔Secure area


16. Confirm adherence to specifications by reporting to the owner about

any - 🧠 ANSWER ✔✔detected damage that could result in leakage or

premature corrosion.

17. Pressure test single-walled tanks with _____ to _______ psig air

pressure, soaping all surfaces, seams and fittings while inspecting for

bubbles. - 🧠 ANSWER ✔✔3 to 5


18. Air testing with over ___ psig (3 Psig for 12-Ft. Diameter FRP tanks) is

hazardous and may damage the tank - 🧠 ANSWER ✔✔5 psig




COPYRIGHT©NINJANERD 2025/2026. YEAR PUBLISHED 2025. COMPANY REGISTRATION NUMBER: 619652435. TERMS OF USE.
PRIVACY STATEMENT. ALL RIGHTS RESERVED


3

, 19. Do not air test a tank that has previously contained - 🧠 ANSWER

✔✔flammable or combustible liquids


20. Place ______ barricades at the ends of tanks being tested. - 🧠

ANSWER ✔✔Warning


21. Avoid tank ends, man-ways, and fittings while the tank is under - 🧠

ANSWER ✔✔Pressure


22. Release pressure in the tank before disconnecting any - 🧠 ANSWER

✔✔gauges or test fittings.


23. Be aware some manufactures do not tighten fittings to allow for

_____________ _____________ during shipping and storage. - 🧠

ANSWER ✔✔Temperature changes


24. True or False: Air tests are inconclusive without soaping and careful

inspection for bubbles? - 🧠 ANSWER ✔✔True


25. Tanks gauges must have a scale that will permit detection of small

changes in __________ that might go undetected on gauges with a

___________ _________. - 🧠 ANSWER ✔✔Pressure, broader range.

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