API 510 Practice Test (Pressure Vessel Inspector)

The API 510 Practice Test (Pressure Vessel Inspector) is a free advanced-level, 25-minute skill test from Science of Apps. It tests readiness for the API 510 Authorized Pressure Vessel Inspector exam — the inspection code and program, corrosion rates, thickness and design calculations, damage mechanisms, welding and NDE, and repairs, alterations, pressure testing and pressure-relieving devices — written to the API 510 body of knowledge, API RP 571, 572, 576 and 577, and ASME Section VIII Division 1, V and IX for 2026. Educational only; always work from the current editions in the exam's effectivity sheet. Score 70% or more on its 25 questions to earn a verifiable API 510 Exam Readiness certificate (SOA-API5). Every question is based on published standards and research — including API 510 Pressure Vessel Inspection Code and API 510 Body of Knowledge (American Petroleum Institute), ASME Boiler and Pressure Vessel Code Section VIII Division 1 (ASME), API RP 571: Damage Mechanisms Affecting Fixed Equipment in the Refining Industry (American Petroleum Institute) — and each answer is explained with its source.

Yes. Science of Apps has a free API 510 Practice Test built on the current API exam outline for 2026 and 2027. It covers ASME Section VIII, inspection practices, and corrosion, scores you instantly and issues a verifiable certificate.

Read the five skill areas on this page, then take the 25-minute test online — no fee, course or sign-up. You see every answer explained when you finish. Score 70% or more and you get a API 510 Exam Readiness certificate straight away, on screen, as a PDF and by email, with a credential ID anyone can verify.

Yes. The questions are original scenarios written by Science of Apps, and each one is based on a public source you can read: API 510 Pressure Vessel Inspection Code and API 510 Body of Knowledge (American Petroleum Institute); ASME Boiler and Pressure Vessel Code Section VIII Division 1 (ASME); API RP 571: Damage Mechanisms Affecting Fixed Equipment in the Refining Industry (American Petroleum Institute); ASME BPVC Section IX: Welding, Brazing and Fusing Qualifications (ASME). The source is shown under each question and linked in the answer review. Science of Apps doesn't copy questions from other tests.

Five skill areas with five questions each, drawn from a bank of 10 per area so a retake brings new questions: Inspection Code and Program (Scope, Roles and Intervals); Corrosion Rates, Thickness and Calculations (Corrosion rate, Remaining life and Design formulas); Damage Mechanisms (Corrosion, Cracking and Material degradation); Welding and NDE (ASME IX and NDE methods); Repairs, Alterations, Testing and Pressure-Relieving Devices (Repairs, Rerating, Pressure tests and PRDs). Every question is an original scenario written to the 2026–2027 standard, with the published source named under it.

Pressure vessel inspector, Mechanical integrity engineer, Asset integrity specialist, NDE technician and Refinery inspection supervisor. It suits anyone who wants a quick, verifiable way to show API 510 knowledge in 2026 and 2027, from students and career switchers to experienced professionals.

Inspection of in-service pressure vessels using API 510 and the referenced practices: inspection planning and intervals, corrosion rate and remaining life calculations, damage mechanisms, welding and NDE, repairs and alterations, pressure testing and relief devices, plus ASME Section VIII, V and IX.

No. Since the move to computer-based testing the exam is closed book, though relevant code extracts and formulas are provided on screen for calculation questions. Check the current API body of knowledge for details.

No. It is an independent practice test written to the publicly available API 510 content outline for 2026 and 2027, for checking your readiness before you book the real exam. Passing earns a Science of Apps certificate rather than the official credential.

Yes. The test is online, in English and free everywhere — people take it from India, the US, the UK, Europe, Africa, Latin America and Asia-Pacific. Your certificate is dated with your own local date and can be verified from anywhere at scienceofapps.com/certification/verify/.

25 questions — 5 from each of 5 skill areas — with a 25-minute limit. You need 70% (18 of 25) to pass and 90% for distinction.

We rate it Advanced: assumes years in the role or deep specialist knowledge. It has 25 scenario questions — 5 from each of 5 skill areas — and a 25-minute limit. You need 70% (18 of 25) to pass and 90% for distinction.

Nothing. There is no fee to take a test, to receive the certificate, to have it emailed or to verify it, and no sign-up.

On our server, not in your browser. The answers never reach the page until you submit, so a certificate can only be earned by passing. Each certificate gets a unique credential ID stored by Science of Apps.

You see your score for each area and every question with the correct answer and why, with the published source behind it. You can retake after 30 minutes, and the retake draws questions you haven't seen yet.

No. Every certificate is dated, so it always shows when you passed. Retake a test any time for a newer date or a higher score.

Yes. After you pass, Add to LinkedIn opens the Licenses & certifications form with the certificate name, Science of Apps as the issuer, the issue date, your credential ID and the verification link filled in. You can also download it as a PDF or PNG, and it's emailed to you as a PDF.

Every certificate has a credential ID and a QR code. Scanning it, or entering the ID at scienceofapps.com/certification/verify/, shows the holder's name, the certification, the score and the issue date from our records.

No. They are Science of Apps' own assessments of applied skill. They aren't issued by a university or standards body, and they work best alongside a portfolio that shows the skills in real work.