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API-577 Exam Questions & Answers
Welding Inspection and Metallurgy Exam • API
110 Questions
110 min
Updated Sep 2026
99% Pass Rate
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Sample API-577 Questions
Practice with real exam-style questions, each with the verified correct answer and explanation.
Q1
MultipleChoice
Remote examination of welds may use aids such as telescopes, borescopes, fiberscopes, cameras, or other suitable instruments provided they have:
Correct Answer: C
Q2
MultipleChoice
What is the "area of interest" on a weld radiograph?
Correct Answer: C
Q3
MultipleChoice
Codes/standards sometimes specify impact testing of weldments at minimum design metal temperatures to:
Correct Answer: C
Q4
MultipleChoice
The WPS gives the welder specific guidelines to:
Correct Answer: A
Q5
MultipleChoice
Hot tapping and in-service welding should be carried out only with:
Correct Answer: C
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Unlock All API-577 QuestionsFrequently Asked Questions
API-577 is a professional certification exam administered by the American Petroleum Institute (API) that tests knowledge of welding inspection and metallurgy principles. It is designed for inspectors, engineers, and professionals involved in welding quality assurance and inspection in the oil and gas industry.
Candidates typically need a minimum of 5 years of welding inspection experience or equivalent combination of education and experience in welding or metallurgy. Some educational backgrounds in metallurgy or engineering may reduce the required experience. It is recommended to review the specific current prerequisites on the API website before registering.
The API-577 exam is typically 4 hours long and consists of approximately 100 multiple-choice questions. The exact format and number of questions may vary, so candidates should verify current exam specifications through official API resources.
The exam covers welding processes, metallurgy fundamentals, welding defects and discontinuities, inspection techniques, and applicable codes and standards. It also includes questions on fracture mechanics, heat treatment, and qualification of welders and welding procedures according to API and ASME standards.
The passing score for API-577 is typically 70%, meaning candidates must answer at least 70 out of 100 questions correctly to pass. The exact passing score should be confirmed with API, as standards may be updated periodically.