API 570 Question Bank (API 570 QB001)

56) What is taken into account by an experienced inspector when selecting TMLs?

a) The amount of corrosion expected

b) The patterns of corrosion that would be expected

c) The number and the cost of reading the TMLs

d) Whether the TMLs are easily accessed

57) In theory, a piping circuit subject to perfectly uniform corrosion could be adequately monitored with __________ TMLs.

a) 1

b) 2

c) 3

d) 4

58) More TMLs should be selected for piping systems with any of the following characteristics:

a) Low potential for creating a safety or environmental emergency in the event of a leak.

b) More complexity in terms of fittings, branches, deadlegs, injection points, etc.

c) Relatively non-corrosive piping systems

d) Long, straight-run piping systems

59) Fewer TMLs can be selected for piping systems with any of the following characteristics:

a) More complexity in terms of fittings, branches, deadlegs, injection points, etc.

b) Higher expected or experienced corrosion rates

c) Long, straight-run piping systems

d) Higher potential for localised corrosion

60) TMLs can be eliminated for piping systems with the following characteristics:

a) Higher potential for creating a safety or environmental emergency in the event of a leak.

b) Low potential for creating a safety or environmental emergency in the event of a leak.

c) Extremely low potential for creating a safety of environmental emergency in the event of a leak.

d) More complexity in terms of fittings, branches, deadlegs, injection points, etc.

61) What is usually the most accurate means for obtaining thickness measurements on installed pipe larger than NPS 1?

a) MT

b) UT

c) PT

d) ET

62) What thickness measuring technique does not require the removal of some external piping insulation?

a) AE

b) UT

c) ET

d) RT

63) When ultrasonic thickness measurements are taken above __________ degrees F, instruments couplants, and procedures should be used that will result in accurate measurements at the higher temperature

a) 150

b) 175

c) 200

d) 250

64) Typical digital thickness gages may have trouble measuring thickness less than __________ inches.

a) 0.2188

b) 0.1875

c) 0.1562

d) 0.1250

65) When pressure testing of piping systems are conducted, they shall be performed in accordance with the requirements of:

a) ASME B31.3

b) ASME B&PV Code, Section VIII

c) SA B16.5

d) API 510

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