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Updated: Sep 03, 2026
No. of Questions: 175 Questions & Answers with Testing Engine
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API API-510 Exam Overview:
| Certification Vendor: | American Petroleum Institute (API) |
|---|---|
| Exam Name: | API 510 Pressure Vessel Inspector Certification Exam |
| Exam Number: | API 510 |
| Exam Duration: | 480 minutes |
| Passing Score: | 70% (scaled) |
| Real Exam Qty: | Approximately 150 (varies) |
| Available Languages: | English |
| Certificate Validity Period: | 3 years (renewable with recertification requirements) |
| Related Certifications: | API 580 API 653 API 577 API 570 |
| Exam Format: | Multiple-choice questions, Computer-based testing at authorized centers, Closed-book section, Open-book section (code/standards) |
| Exam Price: | Varies by region and provider (typically ~USD 350–600) |
| Exam Registration: | API Certification Program Registration |
| Sample Questions: | API API-510 Sample Questions |
| Exam Way: | Computer-based exam at authorized testing centers (proctored exam delivery). |
| Pre Condition: | Requires relevant industry experience in pressure vessel inspection, design, repair, or maintenance as defined by API certification eligibility criteria. |
| Official Syllabus URL: | https://www.api.org/products-and-services/certifications/inspection-and-mechanical/api-510 |
API API-510 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Repair, Alteration, and Rerating | - Repair procedures
|
| Pressure Vessel Design and Engineering Fundamentals | - Design principles and calculations
|
| Inspection, Testing, and Monitoring | - Corrosion monitoring and assessment
|
| Risk and Integrity Management | - Risk-based inspection (RBI)
|
| Codes, Standards, and Fitness-for-Service | - API and ASME standards
|
API Pressure Vessel Inspector Sample Questions:
Question 1
In API-510, which is not considered a standard practice for extending the life of a pressure vessel?
A. Periodic recoating of internal surfaces
B. Application of a corrosion inhibitor
C. Increasing the operating temperature to reduce viscosity
D. Regular cleaning and maintenance
Question 2
Which of the following is not a responsibility of a pressure vessel inspector according to API-510?
A. Documenting inspection findings
B. Ensuring compliance with safety standards
C. Designing pressure vessels
D. Performing inspections
Question 3
Under API-510, how often must the qualifications of a pressure vessel inspector be revalidated through testing or continuing education?
A. Every 10 years
B. Every 3 years
C. Every 5 years
D. Every 6 years
Question 4
What should contain in a progressive record for a pressure vessel?
A. The exact location on a facility plan
B. Construction and design information, operating and inspection history
C. The schedule and piping sizes for the vessel
D. A complete weld map from the original construction plans
Question 5
Explain how API-510 standards guide the emergency response protocols for pressure vessel failures.
Solutions:
| Question 1 Answer: C | Question 2 Answer: C | Question 3 Answer: B | Question 4 Answer: B | Question 5 Answer: Only visible for members |
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