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Instant Download API : API-570 Questions & Answers as PDF & Test Engine
- Exam Code: API-570
- Exam Name: Piping Inspector
- Updated: Jul 15, 2026
- No. of Questions: 150 Questions and Answers
- Download Limit: Unlimited
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API API-570 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Components & Pressure Relieving Devices | 12% | - Piping system flexibility & supports - Valves, flanges, fittings & gaskets - Pressure relief devices inspection |
| Testing & Code Compliance | 7% | - ASME B31.3 process piping rules - Hydrostatic & pneumatic testing - API 570 scope & responsibilities |
| Repairs, Alterations & Rerating | 14% | - Compliance with API 570 & ASME standards - In-service welding rules - Rerating procedures - Temporary & permanent repairs |
| Inspection Planning & Practices | 17% | - Thickness measurement locations - Inspection records & documentation - NDT methods & application - Inspection scope & frequency |
| Welding Qualification & Inspection | 13% | - ASME Section IX requirements - Weld examination & acceptance criteria - WPS, PQR & WPQ review |
| Damage Mechanisms & Materials | 16% | - Stress corrosion cracking & sulfidation - Positive Material Identification (PMI) - Material properties & limitations - Corrosion types (uniform, localized, CUI) |
| Data Evaluation & Calculations | 21% | - Weld & casting quality factors - Inspection interval determination - Corrosion rate & remaining life calculations - Minimum required thickness & MAWP |
API Piping Inspector Sample Questions:
1. A weld is changed from multi pass per side to single pass per side.
How does this effect the PWHT limitation?
A) This limitation does not apply when a WPS is qualified with a PWHT below the upper transformation temperature
B) This limitation does not apply when a WPS is qualified with a PWHT above the upper transformation temperature
C) The PWHT is not a consideration
D) The PWHT must be performed per ASME IX and time increased byone
2. In a piping circuit, which of the following does not routinely have thickness measurements taken?
A) Fittings
B) Dead legs
C) Valves
D) Straight Run Pipe
3. What is the design thickness of NPS 2 ½, SA106 Gr.B pipe that operates at 25 psi / 200°F
A) 0.002"
B) 0.275"
C) not enough information given
D) 0.100"
4. The acronym CUI refers to.
A) Corrosion Under Inside flow
B) Corrosion Under Insulation
C) Carpet Under Infra-structure
D) Cold Under-ground In-service piping
5. Determine the MAWP of the following piping system , at the next inspection, based on the following Design pressure/temperature Pipe description Outside diameter of pipe, D Thickness determined from Inspection Observed Corrosion Rate Next planned inspection 100 psig/100°F NPS 20, Sch. std, A 106 B 20"
0.280"
0.02 inches/year 5 Years
MAWP=
A) 125 psig
B) 550 psig
C) 160 psig
D) 723 psig
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: C | Question # 3 Answer: A | Question # 4 Answer: B | Question # 5 Answer: C |
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