API 580 Exam Guide 2026: Format, Windows, Fees, Eligibility, and Study Plan

API 580 in 2026: Start With the Current Official Rules

API 580 is the American Petroleum Institute's Risk Based Inspection certification. It is intended for inspectors, engineers, and other petrochemical-industry professionals who need to understand how an RBI program identifies risk, turns that analysis into inspection and mitigation decisions, and documents the result.

The exam is not an open-book code lookup exercise. API currently lists 90 questions in 3 hours and 15 minutes, with 80 scored questions and 10 unscored pretest questions. All questions are multiple choice, and the exam is closed book. Candidates may test at a Prometric center or use Prometric's remotely proctored option when their application and equipment meet the requirements.

This guide reflects API information available on July 16, 2026. Always reopen the official API 580 page, current Body of Knowledge, and schedules page before applying because fees, documents, and future windows can change.

free API 580 practice questionsPractice questions with detailed explanations

Exam Format at a Glance

Pretest questions are embedded in the exam and do not affect the score. Candidates should answer every question because the exam does not identify which ten are pretest items.

At a test center, API says candidates have access to a calculator, scratch paper, and pencil. Remote candidates receive a digital calculator and digital scratch paper. Review the API exam tutorial and the delivery-specific Prometric rules before test day instead of assuming that the setup matches another API certification.

2026 API 580 Windows and Deadlines

API scheduled three API 580 windows in 2026:

The distinction between an exam window and an application deadline matters. The August exam had not begun as of July 16, but a new candidate could not use that fact to ignore the June 5 deadline. Candidates already approved for August should follow their Exam Authorization email and schedule only within the approved window. A new applicant looking for a remaining 2026 opportunity should plan around the December window and October 2 deadline.

API says application processing may take up to six weeks, and Prometric seats are limited. Apply early enough to resolve experience-documentation deficiencies and obtain a workable appointment. Remote delivery also requires a system-readiness check and the ProProctor application; discovering an incompatible computer on exam day can create avoidable cost and scheduling problems.

Fees Published for 2026

API's current fee table lists:

These are API program fees, not a complete estimate for optional training, publications, travel, taxes, or Prometric appointment changes. API separately states that rescheduling or canceling an appointment within the same window may cost $35 when done 30–60 days before the appointment or $70 when done 5–29 days before it. Changes are not allowed fewer than five days before the appointment under the published policy.

Do not decide whether membership is worthwhile from the exam discount alone. Compare the current membership terms and every API purchase you actually expect to make.

Who Qualifies for API 580?

There are two official qualification paths.

Current API 510, 570, or 653 holder

A candidate who holds a current API 510, API 570, or API 653 certification automatically qualifies for API 580. API does not say that one of these credentials is mandatory; it is simply an automatic qualification route.

Education and petrochemical experience

Candidates without one of those current certifications qualify through education and petrochemical-industry experience acquired within the last ten years:

The application must document the minimum required experience. API asks applicants to be ready with employer contact information and relevant education records. Do not broaden “engineering or technology” to an unlisted degree category, and do not assume a job title alone proves the required experience. API makes the qualification decision from the submitted application.

Which Body of Knowledge Applies?

This is the most important 2026 document-control issue.

The April 2026 administration used the API RP 580, 4th Edition baseline that preceded API's announced August transition. API's current 2026 Body of Knowledge lists API Recommended Practice 580, Elements of a Risk-Based Inspection Program, 4th Edition, August 2023, with Addenda 1 (March 2025). API announced that the addendum-based BOK takes effect for the August 2026 exam; candidates preparing for August or December should therefore use the current 2026 BOK and the matching publication.

Do not rely on an old course handout simply because it says “2026.” Open the BOK linked from API's API 580 certification page and compare its edition statement with the document you are studying.

The current BOK lists ten knowledge categories:

1. Terms, Definitions, and Acronyms
2. Risk Assessment
3. RBI Program
4. Roles, Responsibilities, Training, and Qualifications
5. Data Collection
6. Damage Mechanisms
7. Probability of Failure (POF)
8. Consequence of Failure (COF)
9. Risk Management
10. RBI Documentation

API's published BOK does not assign percentage weights to those categories. It also lists API RP 580 as the reference publication. Other standards or industry resources may help a professional understand the surrounding subject, but they should not be presented as separately listed exam references or as evidence for an invented weight. The current BOK controls exam scope.

How API 580 Scoring Works

API reports ICP computer-based exams on a common 200–500 scaled-score system. The passing scaled score is 400.

A 400 is not a raw percentage and does not mean that exactly 80% of questions must be correct. API uses multiple exam forms and converts raw performance to a common scale so that scores remain comparable across forms. The raw number corresponding to 400 can therefore differ by form, and candidate score reports do not show the number answered correctly.

Use practice percentages only to diagnose readiness. Do not label a particular raw practice percentage “the API passing score.”

API's normal instant-scoring process says:

• Prometric emails the final score report within 24 hours of testing.
• The result is uploaded to the ICP Portal within three business days.
• Certification is issued for a passing candidate once the application has no unresolved deficiencies.

API notes that a future administration undergoing new standard setting may temporarily take longer, with candidates notified before the affected window. For the ordinary current process, the old claim that every API 580 candidate waits eight to ten weeks is no longer correct.

What to Study Without Inventing a Blueprint

The closed-book format changes how to prepare. The goal is to recall and apply the RBI framework in API RP 580, not to memorize unsupported numerical shortcuts.

1. Build the vocabulary and program map

Start with the definitions and the relationship among risk assessment, the RBI program, inspection planning, mitigation, reassessment, and documentation. Be able to distinguish a risk analysis from the broader program that governs how the analysis is used.

2. Understand roles and data quality

Study who supplies, validates, interprets, approves, and maintains information in an RBI process. Focus on why data completeness, assumptions, uncertainty, operating context, damage-mechanism review, and qualified personnel affect the quality of a result.

3. Connect POF and COF to risk

Know the conceptual roles of probability of failure and consequence of failure. Practice explaining how each affects risk and why changing an inspection plan may address uncertainty or probability without automatically removing every consequence.

4. Turn assessment into risk management

Review how RBI findings support inspection strategies, monitoring, mitigation, reassessment, and communication. Learn the logic for selecting an action and documenting its basis rather than memorizing a list of extreme technical edge cases from unrelated publications.

5. Treat documentation as part of the program

The BOK explicitly includes RBI documentation. Study what must remain traceable: inputs, assumptions, methods, decisions, responsibilities, results, and the basis for future updates. Documentation is not an afterthought; it lets the organization understand and maintain the assessment.

An Eight-Week Study Plan

Adjust the pace to your background and exam date. API does not prescribe a universal number of preparation hours.

For each practice miss, record the governing BOK category, the reasoning error, and the exact RP 580 section to revisit. Re-reading without an error log makes it hard to tell whether recall is improving.

Application and Exam-Day Checklist

Before applying:

• Confirm that you qualify through a current API 510/570/653 credential or the education-and-experience table.
• Select a window whose application deadline has not passed.
• Confirm the current fee and BOK directly on API's site.
• Prepare employer and education documentation before submitting.
• Make sure the name on the API account will match the government-issued ID used for testing.

After approval:

• Use the Eligibility ID in the Exam Authorization email to schedule with Prometric.
• Choose in-person or remote delivery deliberately.
• For remote testing, complete the readiness check before scheduling and install ProProctor.
• Review the API tutorial and Prometric rules.
• Remember that the exam is closed book.
• Plan to answer all 90 questions, including the unidentified pretest items.

A candidate who fails cannot retest in the same exam window. API gives candidates 12 consecutive months, beginning with the first scheduled exam date, to pass under the application cycle. A failure, no-show, missed scheduling, or move to a different window requires the appropriate reschedule/retest process and fee.

Recertification: What API Actually Says

API 580 certification is valid for three years. API's program-specific page currently states:

• Employment verification is not required for API 580 recertification at this time.
• A recertification application may be submitted beginning 90 days before expiration.
• API provides a 90-day grace period after expiration, with late fees.
• If no application is submitted by the end of the grace period, the credential expires; regaining it requires a new application, fees, and passing the full exam.

Do not import recertification requirements from another ICP credential. Use API 580's program-specific recertification page and the current fee table when renewal approaches.

Official Sources

Use these API pages as the source of truth:

• API 580 certification, qualification, and recertification
• Current API 580 Body of Knowledge for 2026
• 2026 ICP exam windows and fees
• Prometric scheduling, remote testing, exam day, and scoring
• ICP applications and reschedule/retest rules
• ICP policies and result timing

free API 580 practice questionsPractice questions with detailed explanations