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API 510

How our API 510 questions are written

Written in our own words

Every API 510 question is written by us to API's current published outline, with code references to API 510 11th ed. (2022) and the effectivity-sheet references. We never use real or recalled exam questions, and we never copy code-book text. Code is cited by section number so you can look it up in your own copy.

Reference basis: API 510 11th ed. (2022) and the effectivity-sheet references.

What the question bank covers

The course has 401 practice questions. Here is how many sit in each blueprint domain.

  • Thickness measurements, inspection intervals and vessel integrity (calculations): 120 questions
  • Welding procedure and qualification evaluation (ASME IX, RP 577): 80 questions
  • Nondestructive examination (ASME V, VIII-1, API 510): 60 questions
  • Practical knowledge - general: 80 questions
  • Practical knowledge - specific (RP 571 listed mechanisms, RP 572, RP 576, RP 578, PCC-2 listed articles): 61 questions

How explanations work

Every question comes with an explanation that names the code section or source it relies on, so you can check it against your own copy.

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Think an answer is wrong? Report it. Not affiliated with or endorsed by American Petroleum Institute. Exam names are used descriptively.