The API Exam Handbook

API 510 Mock Exam: 10 Questions

API 510 Mock Exam :10 Questions
Try these 10 mock exam questions from the API 510 BoK. Give yourself 30 minutes (if you look them up in the API 510 Effectivity List codes) or 10 minutes if you attempt them closed-book (not recommended unless you are very familiar with API/ASME codes). There is a single correct answer unless stated otherwise. If there are multiple answers mentioned, you must get exactly the correct answers; if you choose too few or too many answers you get the question wrong, with no credit for any correct answers you did choose. Sorry, that’s the exam rules.

A good mark is 8/10 correct. Choose your answers, then check out the correct answers here

Qu 1. Which of these can affect the fracture toughness of a steel? There may be one or more correct answers.

a) Section thickness
b) Heat treatment condition
c) Atmospheric corrosion
d) Position in the galvanic series

Qu 2. What is the minimum required Charpy impact value (average of three specimens) of a material of specified minimum yield strength 55ksi and 4in (100mm) thick?

a) 30J
b) 20J
c) 25ft-lbf
d) 30ft-lbf

Qu 3. Which of these materials require mandatory full RT of butt-welded joints? There may be one or more correct answers.

a) P-1 (Gr1) 1in thick
b) P-3 (Gr1) 1in thick
c) P-5A (Gr2) ¼in thick
d) P-9A (Gr1) ½in thick

Qu 4. Which of these standards cover the design and construction of heat exchangers and condensers? There may be one or more correct answers.

a) API 510
b) TEMA
c) API 661
d) API 610

Qu 5. When can the inspector alone approve that a pressure vessel temporary repair may remain in place past the next available maintenance opportunity? There may be one or more correct answers.

a) Never
b) If the repairs are ‘like-for-like’
c) If everything is correctly documented
d) If the vessel is considered ‘low risk’

Qu 6. What minimum information must be included on an additional nameplate (or stamping) following a vessel re-rating? There may be one or more correct answers.

a) MAT
b) MDMT
c) Joint efficiency (E)
d) Allowable stress (S) used

Qu 7. The MAWP allocated for the continued use of an ASME pressure vessel shall be based on what code? There may be one or more correct answers.

a) The ASME edition to which it was built
b) The latest ASME code edition
c) Any post-1968 ASME code edition
d) Any code chosen by the owner-user’s pressure vessel engineer

Qu 8. If a vessel is sold to a new owner-user and relocated to a new site, what action(s) should the API inspector take? There may be one or more correct answers.

a) Do a vessel design review
b) Do a re-rating
c) Do an external inspection
d) Do an internal inspection

Qu 9. The primary goal of internal vessel inspection is to find damage that;

a) May be hiding behind internal furniture
b) Cannot be found by on-stream monitoring external CMLs
c) Has been found by on-stream monitoring of external CMLs but requires classifying for severity
d) Is on the vessel external surface (e.g. CUI) and requires classifying by doing UT thickness checks from the internal surface

Qu 10. Which of these is not a major repair on a pressure vessel? There may be one or more correct answers.

a) Adding a new support saddle
b) Replacing a corroded NPS 24 nozzle
c) Replacing a corroded shell course
d) Making a change that results in an increase in MAWP

Choose your answers, then check out the answers here