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API API-570 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Inspection Planning & Practices | 17% | - Thickness measurement locations - Inspection scope & frequency - Inspection records & documentation - NDT methods & application |
| Topic 2: Damage Mechanisms & Materials | 16% | - Stress corrosion cracking & sulfidation - Positive Material Identification (PMI) - Material properties & limitations - Corrosion types (uniform, localized, CUI) |
| Topic 3: Repairs, Alterations & Rerating | 14% | - Temporary & permanent repairs - In-service welding rules - Compliance with API 570 & ASME standards - Rerating procedures |
| Topic 4: Welding Qualification & Inspection | 13% | - Weld examination & acceptance criteria - ASME Section IX requirements - WPS, PQR & WPQ review |
| Topic 5: Components & Pressure Relieving Devices | 12% | - Pressure relief devices inspection - Piping system flexibility & supports - Valves, flanges, fittings & gaskets |
| Topic 6: Testing & Code Compliance | 7% | - ASME B31.3 process piping rules - Hydrostatic & pneumatic testing - API 570 scope & responsibilities |
| Topic 7: Data Evaluation & Calculations | 21% | - Minimum required thickness & MAWP - Weld & casting quality factors - Inspection interval determination - Corrosion rate & remaining life calculations |
API Piping Inspector Sample Questions:
1. On a class 1500 NPS 4 blind flange, what is the minimum thickness permitted?
A) 2.88"
B) 1.12"
C) 1.88"
D) 2.12"
2. What is the minimum class flange that can be used if the material is SA 351 Gr.C F8C, temperature 950?F and working pressure is 1930 psig
A) 800
B) This material can not be used at this temperature
C) 1500
D) 900
3. What is the maximum thickness measurement inspection interval for an injection point?
A) By Class
B) 10 years
C) 5 years
D) 3 years
4. Can the inspection interval of the system in question 24 be increased to 8 years?
A) If the system was insulated, the interval can be extended
B) No
C) Yes
D) Not enough information given
5. Bolts should extend during the installation of flanged connections.
A) completely through their nuts
B) at least 0.5 inches (12.7 mm) past their nuts
C) only half way through their nuts
D) two threads past their nuts
Solutions:
| Question # 1 Answer: D | Question # 2 Answer: C | Question # 3 Answer: D | Question # 4 Answer: C | Question # 5 Answer: A |






