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100+ Free AL Oil Gas Fields Practice Questions

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2026 Statistics

Key Facts: AL Oil Gas Fields Exam

70%

Passing Score

PSI AL GC Bulletin

30 Q

Official Exam Questions

PSI AL GC Bulletin

2 hours

Time Allowed

PSI AL GC Bulletin

$96

PSI Exam Fee

PSI AL GC Bulletin

Open book

Exam Format

PSI AL GC Bulletin

Alabama AL Oil Gas Fields trade exam via PSI: 30 questions, 70% pass, 2 hours, fee $96. Open-book specialty classification under the Alabama Licensing Board for General Contractors (bulletin 1/23/26).

Sample AL Oil Gas Fields Practice Questions

Try these sample questions to test your AL Oil Gas Fields exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which API standard primarily governs welded steel tanks used for atmospheric oil storage?
A.API 620
B.API 650
C.API 1104
D.API 5L
Explanation: API Standard 650 covers welded tanks for oil storage designed for approximately atmospheric pressure. It is the principal standard for vertical, cylindrical, aboveground welded steel oil storage tanks used on oil and gas field sites.
2API 620 tanks are designed primarily for which service condition?
A.Atmospheric open-top stock tanks only
B.Low internal pressure up to about 15 psig in the gas or vapor space
C.High-pressure process vessels above 1,000 psig
D.Buried concrete septic tanks
Explanation: API 620 covers large, welded, low-pressure storage tanks with gas or vapor space pressures not more than 15 psig and metal temperatures not greater than 250°F. That low-pressure regime is why 620 is used instead of atmospheric API 650 when slight pressure is required.
3What is the typical purpose of an annular bottom plate ring on a large API 650 tank?
A.To provide a thicker, tougher plate ring under the shell where shell-to-bottom stresses are highest
B.To act as a permanent scaffold for painters
C.To replace the need for a foundation
D.To vent vapor from the roof
Explanation: Annular bottom plates form a ring under the shell-to-bottom junction. That region sees high stress and often needs thicker or higher-toughness plate than the rest of the bottom to resist settlement and shell loads.
4Why are many large crude oil tanks built with external floating roofs?
A.To increase storage pressure above 100 psig
B.To reduce vapor space and evaporative hydrocarbon losses while limiting fire risk
C.To eliminate all foundation requirements
D.To allow the tank to be buried underground
Explanation: An external floating roof rides on the liquid surface, minimizing vapor space. That reduces evaporative product loss and lowers the volume of flammable vapor available for fire or explosion compared with a fixed-roof tank with a large vapor space.
5During field erection of an API 650 tank shell, which welding sequence practice best controls shell out-of-roundness and residual stress?
A.Weld only vertical seams and leave all horizontal seams open permanently
B.Use a planned sequence of vertical and horizontal shell seams with fit-up control and progressive alignment checks
C.Skip fit-up and rely only on final hydrotest to reshape the shell
D.Weld the entire tank from the top course downward with no intermediate checks
Explanation: Shell roundness and peaking are controlled by careful plate fit-up, a balanced welding sequence on vertical and circumferential seams, and continuous alignment checks as courses are added. Waiting for hydrotest to “fix” the shell is not an acceptable construction practice.
6What is the main purpose of sloping a tank bottom toward a sump or low point?
A.To increase vapor pressure in the roof space
B.To promote complete drainage and removal of water or product for cleaning and inspection
C.To eliminate the need for cathodic protection
D.To allow the tank to float during floods
Explanation: Bottom slope toward a sump or drain helps remove free water and residual product so the tank can be emptied, cleaned, and inspected. Trapped water under product accelerates underside corrosion if it cannot drain.
7Before backfilling a newly coated steel pipeline, what non-destructive check is commonly used to find pinholes or bare spots in the coating?
A.Holiday (spark or wet-sponge) detection
B.Brinell hardness testing of the coating
C.Magnetic particle testing of the soil
D.Dye penetrant testing of the backfill sand
Explanation: Holiday detection applies electrical voltage across a non-conductive coating on conductive pipe. A discontinuity (holiday) that exposes bare steel produces a signal so the defect can be repaired before backfill traps it against the soil.
8In pipeline construction, what is “stringing”?
A.Hydrostatic testing of the completed line
B.Laying individual pipe joints along the right-of-way in sequence for welding
C.Applying final paint to the pump station
D.Installing cathodic protection rectifiers only
Explanation: Stringing places pipe joints along the right-of-way in the correct sequence so crews can align, weld, coat, and lower-in without unnecessary handling. It is an early construction step after clearing and grading the ROW.
9Why is selected padding or fine bedding material placed under and around coated pipe before general backfill?
A.To increase pipe temperature during hydrotest
B.To protect the coating from rocks and sharp objects that could create holidays after lowering-in
C.To replace the need for welding inspection
D.To make the trench narrower than the pipe diameter
Explanation: Padding and fine bedding cushion the pipe so rocks, frozen clods, or construction debris do not puncture or gouge the external coating after the pipe is lowered into the ditch. Damaged coating becomes a corrosion initiation site.
10What is the primary purpose of a hydrostatic test on a newly constructed pipeline segment?
A.To measure coating color uniformity
B.To prove pressure integrity by holding the line at a specified test pressure with water (or approved test medium)
C.To cure the external coating chemically
D.To magnetize the pipe for later location
Explanation: Hydrostatic testing fills the pipeline with water (or another approved medium) and holds a prescribed pressure for a specified time to demonstrate that welds, fittings, and pipe will not leak under service loads. Leaks or pressure decay indicate integrity problems that must be repaired.

About the AL Oil Gas Fields Exam

The Alabama Oil and Gas Fields Contractor Examination is a classification trade examination administered by PSI for the Alabama Licensing Board for General Contractors. The official open-book exam has 30 questions, a 70% (21 of 30 correct) passing standard, and 120 minutes allowed. PSI examination fee is $96 per attempt (bulletin updated 1/23/26). This English-language MCQ bank is a study aid for the trade knowledge on the official content outline; it is not an official PSI form, does not replace the required Business & Law exam for primes, and is not a substitute for board-approved experience or the official open-book examination.

Questions

30 scored questions

Time Limit

120 minutes

Passing Score

70%

Exam Fee

$96 (PSI Services LLC (for Alabama Licensing Board for General Contractors))

AL Oil Gas Fields Exam Content Outline

35%

Field Construction and Sitework

Oil/gas field site construction

25%

Piping and Equipment

Field piping and equipment

25%

Safety and Environmental

Field safety and environmental controls

15%

Testing and Standards

Testing and industry standards

How to Pass the AL Oil Gas Fields Exam

What You Need to Know

  • Passing score: 70%
  • Exam length: 30 questions
  • Time limit: 120 minutes
  • Exam fee: $96

Keys to Passing

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

AL Oil Gas Fields Study Tips from Top Performers

1Study only the approved references listed for your classification in the current PSI Alabama General Contractors bulletin
2Practice open-book navigation with permanent tabs and indexes before test day
3Drill OSHA 29 CFR 1926 topics that appear across nearly every trade outline
4Work quantity takeoff and plan-reading problems under timed conditions
5Confirm Board eligibility and classification scope on genconbd.alabama.gov before scheduling with PSI

Frequently Asked Questions

How many questions are on the AL Oil Gas Fields exam?

The official PSI trade examination has 30 scored questions (plus possible experimental items). Passing is 70% (21 of 30 correct) within 120 minutes.

How much does the AL Oil Gas Fields exam cost?

PSI lists $96 per examination registration for this Alabama general contractor classification exam (Candidate Information Bulletin updated 1/23/26). License application fees to the Board are separate.

Is the Alabama specialty contractor exam open book?

Yes. PSI administers these classification exams as open book. Only the bulletin-listed approved references are allowed; temporary tabs like Post-it notes are prohibited.

Do I still need the Business and Law exam?

Prime contractor applicants must also pass the Alabama Business & Law examination (50 questions, 70%, 120 minutes). Reciprocity may waive a trade exam in some cases but does not waive Business & Law.