The API Individual Certification Programs (ICP) exams, such as API 510, 570, and 653, are some of the most recognized credentials in the inspection and process safety industry. These exams certify inspectors who work with pressure vessels, piping, and storage tanks. Looking at exam statistics helps both candidates and employers understand how challenging these certifications are and what it takes to succeed.Recent data shows that the pass rate for API 510 falls around 63% on average from 2022 to 2024, with an increasing trend, suggesting that the exam is neither easy nor impossible. Pass rates are observed to be a bit higher across other API certifications like API 570 and API 653, generally hovering in the 66-68% range.<img src="https://ezycourse.b-cdn.net/3596/cmmxdny1o46yu3rpjbruj36pu.png" alt="image" containerstyle="position: relative; width: 768px; height: auto; cursor: pointer;" wrapperstyle="display: flex;"><img src="https://ezycourse.b-cdn.net/3596/cmmxdp63l3iymenqtexgjcudg.png" alt="image" containerstyle="position: relative; width: 770px; height: auto; cursor: pointer;" wrapperstyle="display: flex;">API ICP programs have produced tens of thousands of certified inspectors worldwide, with approximately 43,300 active inspectors in 133 countries and 77,600 active certifications. This highlights the global demand for API-certified professionals. Many inspectors pursue multiple certifications, such as API 510 alongside API 570, because of overlapping knowledge areas and the career advantages that come with broader certification.<img src="https://ezycourse.b-cdn.net/3596/cmmxe055f00devlqtedu43yc2.png" alt="image" containerstyle="position: relative; width: 803px; height: auto; cursor: pointer;" wrapperstyle="display: flex;">First-time exam takers generally have lower pass rates than overall averages, since repeat attempts are included in long-term statistics. However, candidates who enroll in structured review programs or follow organized study plans tend to perform much better. Some industry training providers report first-time pass rates exceeding 90% for well-prepared candidates.API exams are considered challenging because they draw questions from multiple API standards as well as related ASME codes. The Body of Knowledge (BoK) for each exam is extensive, often requiring candidates to be familiar with hundreds to over a thousand pages of reference material. This breadth not only tests memorization, but also practical understanding and code navigation skills.One clear trend is that preparation pays off. Candidates who study using BoK lists, effectiveness sheets, and focused practice questions tend to perform significantly better. The growing number of certified inspectors also reflects the industry’s increasing reliance on standardized inspection qualifications. Additionally, the diversity of exam takers, from the U.S. to the Middle East and Asia, shows that API certifications are truly global in scope.For employers, certification alone is not enough. Most value a combination of API certification and relevant field experience. Still, passing exams like API 510 signals a baseline level of technical competency in inspection practices, safety standards, and code compliance, making certified inspectors more competitive in the job market.API ICP exams can be challenging but not impossible. The statistics show that these are not “last-minute” exams, but they reward disciplined preparation and practical experience. By understanding pass rates, candidate trends, and the numbers, future exam takers can set realistic expectations and plan their preparations more effectively.Table raw values are shown below for reference:API 510 – Pressure Vessel Inspectors<table style="min-width: 125px;"><colgroup><col><col><col><col><col></colgroup><tbody><tr><th colspan="1" rowspan="1">Year</th><th colspan="1" rowspan="1">Candidates</th><th colspan="1" rowspan="1">Pass</th><th colspan="1" rowspan="1">Fail</th><th colspan="1" rowspan="1">Pass %</th></tr><tr><td colspan="1" rowspan="1">2018</td><td colspan="1" rowspan="1">2448</td><td colspan="1" rowspan="1">1460</td><td colspan="1" rowspan="1">988</td><td colspan="1" rowspan="1">59.57</td></tr><tr><td colspan="1" rowspan="1">2019</td><td colspan="1" rowspan="1">2627</td><td colspan="1" rowspan="1">1497</td><td colspan="1" rowspan="1">1130</td><td colspan="1" rowspan="1">57.33</td></tr><tr><td colspan="1" rowspan="1">2020</td><td colspan="1" rowspan="1">1501</td><td colspan="1" rowspan="1">815</td><td colspan="1" rowspan="1">686</td><td colspan="1" rowspan="1">54.40</td></tr><tr><td colspan="1" rowspan="1">2021</td><td colspan="1" rowspan="1">2010</td><td colspan="1" rowspan="1">1151</td><td colspan="1" rowspan="1">859</td><td colspan="1" rowspan="1">57.00</td></tr><tr><td colspan="1" rowspan="1">2022</td><td colspan="1" rowspan="1">2494</td><td colspan="1" rowspan="1">1470</td><td colspan="1" rowspan="1">1024</td><td colspan="1" rowspan="1">58.90</td></tr><tr><td colspan="1" rowspan="1">2023</td><td colspan="1" rowspan="1">3162</td><td colspan="1" rowspan="1">2000</td><td colspan="1" rowspan="1">1162</td><td colspan="1" rowspan="1">63.17</td></tr><tr><td colspan="1" rowspan="1">2024</td><td colspan="1" rowspan="1">3259</td><td colspan="1" rowspan="1">2207</td><td colspan="1" rowspan="1">1052</td><td colspan="1" rowspan="1">67.87</td></tr><tr><td colspan="1" rowspan="1">2025 until May</td><td colspan="1" rowspan="1">1997</td><td colspan="1" rowspan="1">1285</td><td colspan="1" rowspan="1">712</td><td colspan="1" rowspan="1">64.35</td></tr></tbody></table>API 570 – Piping Inspectors<table style="min-width: 125px;"><colgroup><col><col><col><col><col></colgroup><tbody><tr><th colspan="1" rowspan="1">Year</th><th colspan="1" rowspan="1">Candidates</th><th colspan="1" rowspan="1">Pass</th><th colspan="1" rowspan="1">Fail</th><th colspan="1" rowspan="1">Pass %</th></tr><tr><td colspan="1" rowspan="1">2018</td><td colspan="1" rowspan="1">2643</td><td colspan="1" rowspan="1">1464</td><td colspan="1" rowspan="1">1179</td><td colspan="1" rowspan="1">55.33</td></tr><tr><td colspan="1" rowspan="1">2019</td><td colspan="1" rowspan="1">2863</td><td colspan="1" rowspan="1">1427</td><td colspan="1" rowspan="1">1436</td><td colspan="1" rowspan="1">49.90</td></tr><tr><td colspan="1" rowspan="1">2020</td><td colspan="1" rowspan="1">1936</td><td colspan="1" rowspan="1">1053</td><td colspan="1" rowspan="1">883</td><td colspan="1" rowspan="1">55.57</td></tr><tr><td colspan="1" rowspan="1">2021</td><td colspan="1" rowspan="1">1794</td><td colspan="1" rowspan="1">1019</td><td colspan="1" rowspan="1">775</td><td colspan="1" rowspan="1">58.50</td></tr><tr><td colspan="1" rowspan="1">2022</td><td colspan="1" rowspan="1">1640</td><td colspan="1" rowspan="1">1427</td><td colspan="1" rowspan="1">813</td><td colspan="1" rowspan="1">63.43</td></tr><tr><td colspan="1" rowspan="1">2023</td><td colspan="1" rowspan="1">2449</td><td colspan="1" rowspan="1">1624</td><td colspan="1" rowspan="1">825</td><td colspan="1" rowspan="1">66.13</td></tr><tr><td colspan="1" rowspan="1">2024</td><td colspan="1" rowspan="1">2543</td><td colspan="1" rowspan="1">1741</td><td colspan="1" rowspan="1">802</td><td colspan="1" rowspan="1">68.20</td></tr><tr><td colspan="1" rowspan="1">2025 until June</td><td colspan="1" rowspan="1">1577</td><td colspan="1" rowspan="1">1027</td><td colspan="1" rowspan="1">550</td><td colspan="1" rowspan="1">65.10</td></tr></tbody></table>References: American Petroleum Institute (API). (2025). Individual Certification Programs (ICP) statistics report. Retrieved from the API official website.

Breaking down API ICP statistics to better understand exam performance and global certification trends.

API Exam Taker Statistics and Analysis

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API Exam Taker Statistics and Analysis

API Exam Taker Statistics and Analysis

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