INFO-Tentang-Soal-soal-Piping-Preparatory-Course

Pertanyaan yang terdapat di bawah ini merupakan

Pertanyaannya semua yang berhubungan dengan piping, baik untuk repair atau pun Fabrikasi dan system pipa yang baru.

Soal-soal ini hanya sebagai sebagian dari pertanyaan yang biasanya diajukan pada saat mengikuti sertifikasi, tapi bisa dijadikan gambaran buat yang akan mengikuti course atau pelatihan.Semoga Bermanfaat.

Piping Preparatory Course

1. Which of the following are least likely to have corrosion under insulation (CUI)?

2. Which of the following is typical deterioration that can take place on the external surfaces of pipes?

4. Following inspection data is available for a piping circuit.

Minimum required thickness = 0.422 in

Actual thickness measured = 0.512 in

Long term corrosion rate = 0.018 in / year

Remaining life for this circuit will be

5. Piping classifications (class 1, 2, 3) in API 570 will respectively mean,

Thickness	Year
0.500	0
0.425	5
0.400	10

On the basis of the information above, the long-term corrosion rate for the location is:

7. For thickness measurement of pipes NPS1 and smaller. NDT technique employed would be:

8. Identify one of the following alternatives that is suggested by API 570 to determine the Maximum allowable Working Pressure for an unknown material

9. Post weld heat treatment is carried out

10. The external surfaces of vessels should be examined not only for corrosion but also for…

11. If probable corrosion rates can not be determined on-stream determinations shall be made approximately

a. within 6 months of service

b. within 3 months of service

c. within 1 months of service

d. None of the above

12. In case of piping requiring PWHT Pressure test is conducted

13. Freeze damage can occur in case of which of the following fluids:

14. Thickness monitoring during periodic measurements is taken at:

15. For calculating MAWP of Piping Circuit which is put in service the wall thickness used in computations is:

16. “Actively Engaged” as an authorized piping inspector means some minimum time as percentage of most recent 3 years shall be spent on piping inspection. This minimum period is:

17. Table 6-2 of API 570 standard gives extent of CUI inspection following the visual inspection, which is applicable to:

18. As per API 570 for bolted flanged joints, bolts and nuts are considered as acceptably engaged if the lack of complete engagement is:

19. Basic construction code referred in API 570 is

a. ASME Sec. VIII DIV 1

b. ASME Sec. IX

c. ASME B 31.1

d. ASME B 31.3

20. A radio-graphic technique in which radiation passes through two walls and both the walls are viewed on the same radio-graph (double wall, double image – ellipse) the limitation for the outside diameter is

d. Any diameter possible

21. For a typical “injection point pipe circuit” starts upstream of injection point from a distance of

22. After applying the developer the examiner checked four welds for surface defects after following period, weld A – After 5 minute, weld B after 10 minutes, weld C was checked after 30 minutes and welds D after 65 minutes which of the welds were checked wrongly

23. API 570 was developed for the petroleum refining and chemical process industries.

a) It shall be used for all piping systems.

b) It may be used, where practical, for any piping system.

c) It can be used, where necessary, for power piping.

d) It may not be used unless agreed to by all parties.

24. The __________ shall be responsible to the owner-user for determining that the requirements of API 570 for inspection, examination, and testing are met.

a) Piping Engineer

b) Inspector

c) Repair Organization

d) Operating Personnel

25. Who is responsible for the overall control of piping system inspection programs, inspection frequencies and maintenance of piping?

a) Authorized Piping Inspector

b) Owner-user

c) Jurisdiction

d) Contractor

26. What is the best thing to do with dead-legs that are no longer

in service ?

a) Ultrasonically inspect often

b) Radio-graph often

c) Inspect often

d) Remove them

27. Certain areas and types of piping systems are potentially more susceptible to corrosion under insulation. Which of the items listed is not susceptible to CUI ?

a) Areas exposed to mist over-spray from cooling water towers.

b) Carbon steel piping systems that normally operate in-service above 250 degrees but are in intermittent service.

c) Dead-legs and attachments that protrude from insulated piping and operate at a different temperature than the temperature of the active line.

d) Carbon steel piping systems, operating between 250 degrees F and 600 degrees F.

28. Erosion can be defined as :-

a) galvanic corrosion of a material where uniform losses occur

b) removal of surface material by action of numerous impacts of solid or liquid particles

c) gradual loss of material by a corrosive medium acting uniformly on the material surface

d) pitting on the surface of a material to the extent that a rough uniform loss occurs

29. A combination of corrosion and erosion results in significantly greater metal loss that can be expected from corrosion or erosion alone. This type of loss occurs for a corrosive fluid at

a) high-velocity and high-turbulence areas

b) areas where condensation or exposure to wet hydrogen sulfide or carbonates occur

c) surface-to-air interfaces f buried piping

d) areas where gradual loss of material occurs because of a corrosive medium

30. Environmental cracking of austenite stainless steels is caused many times by:

a) exposing areas to high-velocity and high-turbulence streams

b) excessive cyclic stresses that are often very low

c) exposure to chlorides from salt water, wash-up water, etc.

d) creep of the material by long time exposure to high temperature and stress

31. If external or internal coatings or refractory liners on a piping circuit are in good condition, what should an inspector do?

a) After inspection, remove the liner for UT check

b) The entire liner should be removed for inspection

c) Selected portions of the liner should be removed for inspection

d) Liner need not be removed if it is found to be in sound condition

32. Where can fatigue cracking typically be first detected?

a) At points of low-stress intensification such as reinforced nozzles

b) At points of high-stress intensification such as branch connections

c) At points where cyclic stresses are very low

d) At points where there are only bending or compressive stresses

33. Why is thickness measurement inspection performed ?

a) To satisfy jurisdictional requirements

b) To determine the internal condition and remaining thickness of the piping components

c) To determine the external condition and amount of deposits inside the piping

d) To satisfy heat transfer requirements of the piping

34. Who would normally report vibrating or swaying piping to engineering or inspection personnel?

a) Operating personnel

b) Repair personnel

c) Jurisdictional personnel

d) Design personnel

35. The minimum thickness at each TML can be located by

a) electromagnetic techniques

b) ultrasonic scanning or profile radiography

c) hammer testing

d) MT and / or PT

36. 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, dead-legs, injection points, etc.

37. 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

38. The preferred medium for a pressure test is __________

a) steam

b) air

c) water

d) hydrocarbon

39. If a non-toxic hydrocarbon (flammable) is used as the test medium, the

liquid flash point shall be at least __________ degrees F or greater

a) 95

b) 100

c) 110

d) 120

40. During a pressure test, where test pressure will exceed the set pressure of the safety relieve valve or valves on a piping system, the safety relief valve or valves should be __________ when carrying out the test

a) altered by screwing down the adjusting screw

b) reset to exceed the test pressure

c) checked or tested

d) removed or blanked

41. Name a part of a piping system that thickness measurements are not normally routinely taken

a) elbows

b) expansion loops

c) tees

d) valves

42. According to API 570, some welds in a piping system that has been subjected to radiography according to ASME B31.3 :-

a) will meet random radio-graph requirements and will perform satisfactorily in-service without a hydro-fest

b) will not meet random radio-graph requirements, and will not perform satisfactorily in-service even though hydro-tested.

c) will meet random radio-graph requirements, and will not perform satisfactorily in-service after a hydro-test

d) will not meet random radio-graph requirements, but will still perform satisfactorily in-service after being hydro-tested.

43. When an RBI assessment is used to increase or decrease inspection intervals, the assessment

a) 5

b) 10

c) 15

d) 3

44. Listed below are several examples of a CLASS 1 piping system. Which one does not belong?

a) Anhydrous hydrogen chloride;

b) Hydrofluoric acid

c) Piping over or adjacent to water supply lines

d) Distillate and product lines to and from storage and loading

45. Class 3 piping is described as being in services

a) with the highest potential of resulting in an immediate emergency if a leak occurs

b) that are flammable but do not significantly vaporise when they leak and are not located in high-activity areas

c) that are flammable and slowly vaporize if leak occurs

d) that are not in classes 1 and 2.

46. Thickness measurement inspection on class 1 piping should be scheduled based on the calculation of not more than

a) one half the remaining life determined from corrosion rates or the maximum interval of 5 years whichever is shorter.

b) one half the remaining life determined from corrosion rates or 5 years

c) one fourth the remaining life determined from corrosion rates or the maximum interval of 10 years whichever is shorter.

d) one quarter the remaining life determined from corrosion rates or 5 years.

47. You have a new piping system that has just been installed. It is completely new and no information exists to establish a corrosion rate. Also, information is no available on a similar system. You decide to put the system in service and NDT it later to determine the corrosion rate. How long do you allow the system to stay in service before you take your first thickness readings ?

a) 1 month

b) 3 months

c) 6 months

d) 12 months

48. The __________ shall maintain appropriate permanent and progressive records of each piping system covered by API 570.

a) inspector

b) owner-user

c) jurisdiction

d) examiner

49. What type of defect, corrosion, pitting and / or discontinuity should not be repaired by a full encirclement welded split sleeve ?

a) A longitudinal check

b) A circumferential crack

c) Pits that are one half through wall

d) General corrosion in the longitudinal direction.

50. The repair organization responsible for welding shall maintain records of welding procedures and welder performance qualifications. These records shall be available to the inspector :-

a) at the end of the job

b) after the start of welding

c) following the start of welding

d) before the start of welding

51. Fillet welded patches (lap patches) shall be designed by

a) an engineer

b) the inspector

c) the piping engineer

d) the repair organization

52. How often should above-grade visual surveillance of a buried pipeline right-of-way be made ?

a) Once a month

b) Approximately 6 month intervals

c) Once a year

d) Once every 3 months

53. Which of the inspection agencies listed below is

a) Jurisdictional inspection organization

b) Owner-user inspection organization

c) ASTM inspection organization

d) Insurance agency inspection organization

54. An examiner is a person who __________ the inspector

a) supplants

b) assists

c) supervises

d) directs

55. A filmside penetrameter can be used for:

56. The accuracy of a piece of magnetizing equipment that is equipped with an ammeter shall be verified :

57. Prior to examinations, each adjacent surface shall be cleaned within at least _____" of the area to be PT examined.

58. When using a hydrophilic emulsifier versus a lipophilic emulsifier

additional step that must be taken is:

59. When using an emulsifier, it is applied on the weld during the LPI check.

60. Which NDE methods are considered "surface" methods?

61. Remaining life of pipe circuit is determined by:

62. What width of indication is required to demonstrate that a visual examination procedure is adequate per ASME V?

63. ASME B 16.5 does not cover:

64. When using radiographs to qualify welder, the acceptance standards used are found in

69. What is the number of guided bend tests required for Performance Qualification in a 6G position?

70. A welder qualified to weld in the 2G position on pipe would have to be qualified in which of the additional positions to qualify for all position groove welding on pipe?

71. As soon as possible after completing an inspection, the Inspector should:

72. What is the minimum time that a leak test must be maintained (all joints and connections shall be examined for leaks)?

73. What type of problem would you expect in piping containing Amine?

74. A pressure test for piping, in most cases is a:

75. An example of service-specific and localized corrosion is :-

a) Corrosion under insulation in areas exposed to steam vents

b) Unanticipated acid or caustic carryover from processes into non-alloyed piping

c) Corrosion in dead legs

d) Corrosion of underground piping at soil-to-air interface where it ingresses or egresses

76. Fatigue cracking of piping systems may result from

a) Embitterment of the metal due to it operating below its transition temperature

b) erosion or corrosion / erosion that thin the piping where it cracks

c) excessive cyclic stresses that are often well below the static yield strength of the material

d) environmental cracking caused by stress corrosion due to the presence of caustic, anime, or other substance.

77. What are the preferred NDE methods for detecting fatigue cracking?

a) Eddy current testing ultrasonic A-scan testing, and / or possibly hammer testing

b) Liquid penetrant testing, magnetic particle testing .

c) Visual testing, eddy current testing and / or possibly ultrasonic testing

d) Acoustic emission testing, hydro-testing, and / or possibly ultrasonic testing

78. Water and aqueous solutions in piping systems may freeze and cause failure because of the

a) expansion of these materials;

b) contraction of these materials

c) construction of these materials

d) decrease of these materials

78. where should special attention be placed when taking thickness measurements of an elbow?

a) the outlet end;

b) the inlet end

c) the inside and outside radius

d) the sides

80. 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

81. 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

82. 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

83. When a pressure test is not necessary or practical, what shall be utilised in lieu of a pressure test?

a) NPS

b) Non-destructive examination

c) Vacuum visual examination

d) NBE

84. Deadlegs of a piping system are:

a) the upstream piping of control valve manifolds

b) supports attached to a pipeline that has no product in them

c) the upstream part of an orifice runs

d) sections that normally have no significant flow

85. API 578 gives rules for Alloy Verification for:

86. The __________ shall be responsible to the owner-user for determining that the requirements of API 570 for inspection, examination, and testing are met.

a) Piping Engineer

b) Inspector

c) Repair Organisation

d) Operating Personnel

87. An RBI assessment can be used to alter the inspection strategy provided:

a) The degradation methods are identified

b) The RBI is fully documented.

c) A third party conducts the RBI

d) Both A and B above

88. Why should deadlegs in piping be inspected ?

a) API 570 mandates the inspection of deadlegs

b) Acid products and debris build up in deadlegs

c) The corrosion rate in deadlegs can vary significantly from adjacent active piping.

d) Caustic products and debris build up in deadlegs.

89. What are the preferred NDE methods for detecting fatigue cracking?

a) Eddy current testing ultrasonic A-scan testing, and / or possibly hammer testing

b) Liquid penetrant testing, magnetic particle testing.

c) Visual testing, eddy current testing and / or possibly ultrasonic testing

d) Acoustic emission testing, hydro-testing, and / or possibly ultrasonic testing.

90. No.1 Tensile developed 51,000 psi, broke in the weld

No.2 Tensile developed 56,900 psi, broke in base metal

No.1 Transverse root bend satisfactory

No.2 Transverse face bend satisfactory

Will these tests qualify the welder?

91. When checking austentic materials for cracks using PT methods only liquid penetrants:

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