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120+ Free API 580 Practice Questions

Prepare for the API 580 Risk Based Inspection Professional exam with instant access — no signup required.

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2026 Statistics

Key Facts: API 580 Exam

90 Qs

Exam Questions

80 scored + 10 pretest

3.25 hrs

Time Limit

Closed-book

400 scaled

Passing Score

API ICP scoring

$380-$440

Exam Fee

Member/non-member

API RP 580

Reference

4th Ed Addenda 1 (2025)

3 years

Certification Valid

Recertification required

The API 580 exam has 90 multiple-choice questions (80 scored + 10 unscored pretest) with a 3 hour 15 minute time limit in a closed-book format at Prometric test centers or via remote proctoring. The exam is based on API RP 580 Elements of a Risk-Based Inspection Program, 4th Edition Addenda 1 (2025) for August 2026 and later exam windows. The exam fee is $380 for API members and $440 for non-members, plus a $200 reschedule/reexam fee. Certification is valid for three years and requires recertification. API holds three exam windows per year (April, August, December).

Sample API 580 Practice Questions

Try these sample questions to test your API 580 exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 120+ question experience with AI tutoring.

1According to API RP 580, how is risk mathematically defined?
A.Risk = Probability of Failure minus Consequence of Failure
B.Risk = Probability of Failure multiplied by Consequence of Failure
C.Risk = Probability of Failure divided by Consequence of Failure
D.Risk = Probability of Failure plus Consequence of Failure
Explanation: API RP 580 defines risk as the product of probability of failure (POF) and consequence of failure (COF): Risk = POF x COF. Both factors must be evaluated and combined to establish a risk ranking for each equipment item. This multiplicative relationship is the foundation of the entire RBI methodology. Exam tip: Expect at least one definition-based question using this exact formula in Section 3 of API RP 580.
2Per API RP 580, relative risk is best described as which of the following?
A.An ideal and accurate description and quantification of risk
B.The comparative risk of a facility, process unit, system, equipment item, or component compared to others
C.Risk expressed only in monetary units for financial loss
D.Risk that has been fully mitigated to an acceptable level
Explanation: API RP 580 Section 3 defines relative risk as the comparative risk between facilities, units, systems, or components. RBI focuses on relative risk because calculating absolute risk precisely is generally impractical. Relative risk lets users prioritize inspection resources on equipment with the highest risk compared to other items. Exam tip: Know the difference between relative risk (comparative, practical) and absolute risk (ideal, often unachievable).
3Which API document provides the quantitative methodology for calculating probability and consequence of failure used in RBI?
A.API RP 580
B.API RP 581
C.API RP 571
D.API RP 572
Explanation: API RP 580 sets the minimum elements an RBI program must contain, while API RP 581 provides the detailed quantitative RBI methodology including specific POF and COF calculation procedures, damage factors, and generic failure frequencies. The two documents are complementary: 580 is the what and why; 581 is the how. Exam tip: Questions that ask for calculation methodology point to 581, while framework questions point to 580.
4In API RP 580 terminology, what is a damage mechanism?
A.The economic loss resulting from equipment failure
B.Any type of deterioration that could lead to reduced equipment fitness for service
C.A method for repairing damaged equipment
D.A specific inspection technique used to detect flaws
Explanation: API RP 580 Section 3 defines a damage mechanism as any type of deterioration that could lead to reduced fitness for service of an asset or component, such as general corrosion, cracking, fatigue, or creep. Identifying credible damage mechanisms is the foundation of POF analysis. Exam tip: Do not confuse damage mechanisms with damage modes or failure modes — a damage mechanism is the cause of deterioration, not its outcome.
5Per API RP 580, what is a risk driver?
A.A person assigned to manage the RBI program day-to-day
B.An operating condition that reduces risk
C.A factor that contributes substantially to the overall risk of an equipment item
D.The minimum inspection interval required by code
Explanation: A risk driver is a factor — either POF or COF-related — that contributes substantially to the overall calculated risk of an equipment item. Identifying risk drivers lets an RBI team target mitigation where it will have the greatest effect. Common risk drivers include active damage mechanisms, large toxic inventories, and high-consequence service. Exam tip: Mitigating the risk driver is the most efficient way to reduce risk.
6Which acronym is used in API RP 580 to describe the amount of loss expected if a failure occurs?
A.POF
B.COF
C.MOC
D.RBI
Explanation: COF stands for Consequence of Failure, which includes safety, environmental, and financial losses that would result from an equipment failure. POF is Probability of Failure, MOC is Management of Change, and RBI is Risk-Based Inspection. Exam tip: Memorize the core acronyms — POF, COF, MOC, RBI, NDE, SCC, HIC, SSC, HTHA, CUI — because they appear throughout every section of the exam.
7Per API RP 580, residual risk is best described as which of the following?
A.Risk that remains after all inspection and mitigation activities have been applied
B.The portion of risk that is always zero
C.Risk from equipment that has been decommissioned
D.Risk transferred to insurance carriers
Explanation: Residual risk is the risk that remains after inspection, mitigation, and other risk management activities have been carried out. Because absolute risk cannot be driven to zero (due to unknown damage mechanisms, human error, natural events), some residual risk always remains and must be accepted or further managed. Exam tip: Understand that RBI aims to reduce risk to an acceptable level, not eliminate it entirely.
8Which term in API RP 580 refers to the process of keeping an RBI assessment current as conditions change?
A.Risk ranking
B.Evergreening
C.Derating
D.Benchmarking
Explanation: Evergreening is the process of continuously updating an RBI assessment to reflect new inspection data, process changes, MOCs, and damage mechanism discoveries. Without evergreening, an RBI program quickly becomes obsolete and no longer reflects actual equipment risk. API RP 580 Section 15 covers reassessment and updating requirements. Exam tip: Expect a question distinguishing evergreening from initial assessment or periodic reassessment.
9Which of the following is NOT one of the three main approaches to risk assessment recognized by API RP 580?
A.Qualitative
B.Quantitative
C.Semi-quantitative
D.Deterministic-only
Explanation: API RP 580 recognizes qualitative, quantitative, and semi-quantitative approaches to RBI. Qualitative uses descriptive categories, quantitative uses numerical values and probability theory (typically from API RP 581), and semi-quantitative blends numerical and descriptive elements. Purely deterministic approaches do not capture probabilistic uncertainty and are not considered a standalone RBI approach. Exam tip: Know the three approaches and when each is appropriate.
10Which RBI approach uses detailed numerical values, probability theory, and specific consequence calculations such as those in API RP 581?
A.Qualitative RBI
B.Quantitative RBI
C.Screening RBI
D.Hazard-only RBI
Explanation: Quantitative RBI uses detailed numerical data — corrosion rates, damage factors, generic failure frequencies, release rates, and consequence areas — typically following the API RP 581 methodology. Qualitative uses descriptive low/medium/high categories based on expert judgment. Screening is a preliminary sort, not a full approach. Exam tip: If a question mentions calculated POF, COF area, or damage factors, the answer is quantitative.

About the API 580 Exam

API 580 is an API Individual Certification Program credential on developing, implementing, and sustaining a Risk Based Inspection program under API RP 580. The closed-book exam covers ten Body of Knowledge categories, including risk assessment, data, damage mechanisms, probability and consequence of failure, risk management, and documentation. Certification is valid for three years.

Questions

90 scored questions

Time Limit

3 hours 15 minutes

Passing Score

400 on API's 200-500 scaled-score system

Exam Fee

$380 member / $440 non-member (American Petroleum Institute (API) / Prometric)

API 580 Exam Content Outline

Not published

Terms, Definitions, and Acronyms

RBI vocabulary, risk definitions, relative vs absolute risk, and common acronyms per API RP 580 Section 3

Not published

Risk Assessment

Risk = POF x COF, qualitative/quantitative/semi-quantitative methods, risk matrices and risk plots per Sections 4 and 12

Not published

RBI Program

Purpose, objectives, implementation steps, MOC integration, and program management per Sections 5 and 6

Not published

Roles, Responsibilities, Training, and Qualifications

RBI team roles, inspector/engineer/specialist responsibilities, and required training per Section 7

Not published

Data Collection and Validation

Design, operating, inspection, and process data needed for RBI, plus data quality validation per Sections 8 and 9

Not published

Damage Mechanisms and Failure Modes

Thinning, environmental cracking, metallurgical, mechanical, and high-temperature damage per Section 10

Not published

Probability of Failure (POF) Analysis

POF methods, time-dependent/independent models, damage factors, inspection effectiveness per Section 11

Not published

Consequence of Failure (COF) Analysis

Safety, environmental, and financial COF, hole size, inventory, release rate, and COF categories per Section 12

Not published

Risk Management and Inspection Planning

Risk ranking, mitigation, inspection effectiveness categories and intervals per Sections 13 and 14

Not published

RBI Documentation, Reassessment, and Recordkeeping

Evergreening the RBI assessment, MOC triggers, and required documentation per Sections 15 and 16

How to Pass the API 580 Exam

What You Need to Know

  • Passing score: 400 on API's 200-500 scaled-score system
  • Exam length: 90 questions
  • Time limit: 3 hours 15 minutes
  • Exam fee: $380 member / $440 non-member

Keys to Passing

  • Work through all 120 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

API 580 Study Tips from Top Performers

1Confirm the BOK edition for your exact exam window before studying; August and December 2026 use API RP 580 4th Edition with Addenda 1
2Build a checklist from all ten official BOK categories instead of relying on unofficial percentage weights
3Practice explaining how data quality, assumptions, damage-mechanism identification, POF, and COF connect to a risk decision
4Use timed 90-question sessions to rehearse the published 3-hour-15-minute closed-book format
5Treat practice percentages as diagnostic feedback, not as API's 400 scaled passing score

Frequently Asked Questions

What score do I need to pass the API 580 exam?

API reports ICP exams on a 200-500 scale and publishes 400 as the passing scaled score. API does not publish a fixed raw percentage or a universal number-correct conversion because forms are equated. Ten of the 90 API 580 questions are unscored pretest items, and candidates cannot identify them during testing.

Is the API 580 exam open-book or closed-book?

API publishes API 580 as a closed-book examination. Paper and reference materials are not allowed at the Prometric test center or during a remote-proctored session.

How many questions are on API 580?

The formal API 580 exam displays 90 multiple-choice questions: 80 scored and 10 unscored pretest questions. Candidates have 3 hours 15 minutes. Open Exam Prep's 120 local practice items are a separate, changing study inventory.

Which reference publications does the API 580 exam cover?

The current 2026 Body of Knowledge lists API RP 580, Elements of a Risk-Based Inspection Program. API says the August and December 2026 exams use the 4th Edition, August 2023, with Addenda 1 from March 2025. Check the live BOK before each window.

Does API publish BOK category weights for API 580?

No. The current BOK names ten knowledge categories but does not assign them percentage weights. Do not turn a training provider's study allocation into an official blueprint.

What are the current API 580 recertification rules?

API 580 certification lasts three years. API currently says employment verification is not required for API 580 recertification. The portal opens 90 days before expiration and allows a 90-day grace period after expiration with a late fee; missing that grace period requires a new application, fees, and the full exam.