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For API 510 holders facing the six-year recertification web quiz

API 510 recert quiz: refresh what it can reach

Patch AI Answer, then ask me why, in the free 10-question check. Start the check

Refresh the API 510 rules and the RP 571 sections the open-book recert quiz can reach. Take the free 10-question check and see which area to read next.

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Example of how I explain. In the free 10-question check, answer a question, then tap Ask Patch why. 3 free asks, 10 more with your email. Meet Patch

Answer one, then ask me why
  • No signup · No card
  • 10 questions, untimed
  • Answers explained as you go
  • Scored by domain

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Exam at a glance

Format
25 questions in 240 minutesBook: Open book. The editions are on the recertification publications sheet effective 20 Oct 2025 (saved). Which reference formats are on screen is not stated (unconfirmed)
Delivery
Online web quiz taken through the ICP Portal, with the same username and password as the portal account. Proctoring and ID rules are not stated on the pages we saved (unconfirmed)
Retakes
One retake. A second failure means a new application and the full exam

What it covers

I. Inspection intervals, corrosion rates and remaining life
II. Repairs, alterations, rerating and pressure testing
III. Inspection organization, records and open-book navigation
IV. Selected RP 571 damage mechanisms (RP 571 Section 2 and the paragraphs on the quiz sheet)

The free 10-question check follows these domains, subject to the available practice questions.

Original practice material. Not affiliated with API.

Want exam pace? Take the 25-question practice test (about 240 minutes)

How it works

  1. Answer

    10 questions, untimed. Check each answer to see why it's right, with a hint where one helps.

  2. See your score

    Your score, broken down by outline domain, with your weakest one named.

  3. Study smarter

    Add your email and exam date for a study plan. Ready for exam pace? The 25-question practice test pauses and saves your place.

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See what's on the API 510 recert exam, take the free 10-question check, or find the plan that fits you.

The API 510 recert course

Available now · instant access

Refresh the rules and the RP 571 sections the six-year web quiz draws on, with two timed 25-question practice forms.

  • 2full-length timed exams25 questions in 240 minutes each
  • 60practice questionsEach one explained

Patch, your AI study buddy: step-by-step walk-throughs, a weak-spot quiz and your mistake patterns. Up to 40 messages a day.

See the module
  1. What changed for the six-year recert: API 510 errata and selected RP 571 sections
API 510 recert practice pack$59Get the practice pack · $59

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Every answer comes with a full explanation.

The Long Seam app

Study for the API 510, API 570 and API 510 recert exams anywhere you are

The Long Seam app for iPhone and Android is built around your study buddy, with quick practice questions and your study plan. Long Seam already works in your phone's browser today.

  • Today's questions, aimed at your weakest domain
  • Your week's plan, counting down to exam day
  • The same original questions and explanations as the site
  • Every exam on the site: API 510, API 570 and API 510 recert

Patch AI, your Long Seam study buddy, is at the center of the app.

  • Tutor walkthroughs: Step-by-step help on any question you answered, at your pace.
  • My study course: A day-by-day course built from your weakest domains.
  • Weak-spot quiz: Quiz yourself on what you missed, with spaced review so it sticks.
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Early designs of the Long Seam app. Everything here already works in your phone's browser.

Free API 510 recert study plan

A week-by-week plan from today to your exam, weighted to the published exam outline. We show it here and email you a copy.

API 510 recert quiz FAQ

Is this the real recertification quiz?

No. We never use real or recalled exam items. These are original practice questions written from topic and section numbers. They do not predict your result.

What does API say about the quiz?

API's API 510 page describes a 25-question open-book web quiz every six years. Pass mark and proctoring are not stated in the pages we read, so we do not claim either. Read API's recertification page for the current rules.

Do you reproduce the codes?

No. We cite document and section numbers without reproducing code-book text. Use your own licensed references when studying.

How is the check scored?

Items are grouped into four areas. API publishes no outline or weights for the web quiz that we found, so the areas are our own practice split. The result helps you choose what to read next.

  1. 01Free API 510 recert check10 questions, untimed, about 30 minutes. Answers explained as you go.Start free
  2. 02API 510 recert practice pack$59. Lessons, timed practice exams and a plan around your exam date.See the plans

Want the full picture first?Format, domains, references and published sources in one page.

Read the API 510 recert exam guide

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