API 653 Question Bank (API 653 QB001)

21. API 650: Appendix M provides requirements for Tanks designed to operate at the following range of temperatures:

a. Exceeding  260°C                           

b. Above 90° - 260°C 

c. Below 90°C

d. Below 0°C

22. For a reconstructed tank as per API 653 Verticality (out-of-plumbness) of top of the shell shall not exceed,

a. 1/300 of total tank height                  

b. 1/250 of total tank height 

c. 1/400 of total tank height

d.  None of the above

23. When lining is applied to bottom on inside of tank, the lining shall extend ___________ up the shell. 

a. 6” min

b. 12” min

c. 18” min

d. 3” min

24. Hot tap can be performed on:

a. Vapour space in the shell

b. On the roof

c. In the shell below liquid level

d. Anywhere on the tank

25. A radiograph was having density near the penetrameter equal to 3.0.  Hence the acceptable density range of the radiograph is:

a. 1.7 to 4

b. 2.55 to 3.9

c. 2.0 to 4.0

d. None of the above

26. The examiner for conducting magnetic particle testing on the tank welds shall be:

a. Qualified as per ASNT Level II or III

b. Able to read Jagger-2

c. Qualified as per ASME Sec. V

d. None of the above

27. In atmospheric conditions, grit blasting can be done at temperature of at least:

a. 2°F above the dew point.

b. 5°F below the dew point

c. 5°F above the dew point

d. At the dew point

28. How many equally spaced measurements are required for the thickness averaging technique?

(a) 2

(b) 5

(c) 4

(d) 3

29. How many specimens must be used for impact tests from a single test coupon or test location?

(a) 1

(b) 2

(c) 3

(d) 4

30. Hydrostatic tests shall be held for ____ hours for the reconstructed tank.

(a) 2

(b) 8

(c) 24

(d) 72

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