API 510 prep
API 510 course and practice exams
Lessons for every task in American Petroleum Institute's outline, worked calculations and timed practice exams at the real length. One payment, lifetime access (at least 3 years).
Practice pack
Drill the question bank and sit timed practice exams with a closed-book and an open-book part.
- 401 original practice questions, each with a worked explanation and the code section it relies on
- 2 full-length timed practice exams (170 questions, 390 minutes), weighted like the real exam
- Scores by domain after every drill, so you know what to study next
Best if: You already inspect vessels and want exam practice.
API 510 course
Learn every Body of Knowledge section, work the calculations step by step, then prove it on timed exams.
- Everything in the practice pack, plus:
- 8 modules of lessons covering every task in API's API 510 content outline
- 6 worked calculations you can repeat with your own numbers
- A week-by-week study plan built from your diagnostic and your exam date
- Exam-day checklist: what to bring, allowed references and the calculator rules
Best if: You want a structured path through the whole Body of Knowledge.
Instant access. Everything in the plan you choose opens as soon as checkout completes.
Not sure which plan fits? Take the free 10-question check and we'll recommend one.
See the teaching before you buyRead a complete lesson from the course, “Corrosion rates, remaining life and inspection intervals”, and try a short practice set with full explanations. Free, no sign-up.
Read the free lessonWhat the course covers
8 modules, mapped to the task numbers in American Petroleum Institute's published API 510 content outline. Taught to API 510 11th ed. (2022) and the effectivity-sheet references.
- API 510: scope, the inspector, repairs and rerating (task IV.1, IV.2, IV.12, IV.13, IV.14, IV.15, V.510)What API 510 covers and who does what · Types of inspection and keeping safe during them · Records and reports · Repairs and alterations: authorization and approval · Rerating a vessel
- Corrosion rates, remaining life and inspection intervals (task I.1, IV.8, IV.9, IV.10)Metal loss and corrosion rates · Remaining corrosion allowance and remaining life · Setting internal, on-stream and external inspection intervals · What changes an interval
- Required thickness and MAWP under Section VIII Division 1 (task I.2, I.3, I.4, I.5, I.8, I.9)Weld joint categories, radiography and joint efficiency · Static head and vessel part MAWP · Required thickness and MAWP of cylinders and spheres · Ellipsoidal and hemispherical heads · Attachment welds at openings, reinforcement and external pressure rules
- Pressure testing and impact test exemptions (task I.6, I.7, IV.16)Hydrostatic test pressure and the stress ratio · Pneumatic tests and test safety · Impact testing and minimum design metal temperature · Testing after repairs, alterations and rerating
- Welding procedures, qualifications and welding practice (task II.A, II.B1, II.B2, II.C, IV.6)Reviewing a WPS against its PQR · Welder performance qualification · Section VIII Division 1 and API 510 welding rules · Welding processes and metallurgy from RP 577
- Nondestructive examination (task III.A1, III.A2, III.A6, III.A7, III.A23, III.B, IV.7)Section V general requirements · Radiography: IQIs, density and markers · Liquid penetrant and magnetic particle examination · Ultrasonic thickness measurement · NDE rules in Section VIII Division 1 and API 510
- Damage mechanisms, materials and vessel inspection practice (task V.571, V.572, IV.3, IV.4, IV.5)Corrosion mechanisms on the BOK list · Cracking and high-temperature mechanisms on the BOK list · Materials and fabrication problems · Inspection practice from RP 572
- Relief devices, material verification and repair methods (task V.576, V.578, V.PCC2, IV.11)Pressure-relieving devices and their inspection · Material verification programs · Repair methods in the listed PCC-2 articles
What you get
- Full refund within 14 days of buying, for any reason, unless you have finished both timed practice exams for any course in your order. One refund per customer. Refund terms.
- Instant access after checkout to everything in your plan.
- One payment, lifetime access (at least 3 years), updates included.
- Question bank and timed exams · Expert review in progress: questions marked Reviewed were checked by a pressure vessel inspection professional with 13 years in the industry (Oct 19, 2026). The newest questions are still being reviewed.
- Every answer key is confirmed by a separate blind solve, and reported errors are fixed within 2 business days.
- No subscription and no hidden extras. We promise the content, not an exam result.
Questions
When do I get access?
Straight away. Checkout takes you to your course, and the receipt email has the same link.
Can I get a refund?
Yes. Full refund within 14 days of buying, for any reason, unless you have finished both timed practice exams for any course in your order. One refund per customer. See the refund terms.
How long do I keep access?
For as long as we offer the course, and at least 3 years. The course teaches API 510 11th ed. (2022) and the effectivity-sheet references. Updates are included, so if American Petroleum Institute moves this exam to a newer code edition while you have access, your course moves with it.
What is the difference between the practice pack and the course?
The practice pack is the question bank and the timed practice exams. The course adds a lesson for every task in American Petroleum Institute's content outline, worked calculations, a study plan built from your diagnostic and an exam-day checklist. If any domain scored under about 60%, take the course.
Are the questions copied from the exam?
No. Every question is original and written to American Petroleum Institute's published content outline. Exam content is confidential and we never use it. We are not affiliated with or endorsed by American Petroleum Institute.
Can my employer pay?
Yes. Pay at checkout and we email a receipt you can expense, or download a reimbursement request to send your manager.
Can you promise I will pass?
No, and nobody honest can. What we promise is the content listed above.
Employer paying?
Many employers fund API 510 prep. Generate a reimbursement request PDF to send to your manager.