API 510 exam guides and free questions

Everything we have written for API 510 Pressure Vessel Inspector candidates, each page checked against the awarding body's own pages.

API 510 Exam facts and dates 7 min read

API 510 Exam Format, Scoring and Dates

API 510 is 170 questions across a 7.5-hour day, 140 of them scored, passing at a scaled 400. Windows, deadlines and fees through 2027.

12 October 2026 Read the guide →

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