INFO-Tentang-Soal-soal-Piping-Preparatory-Course
Tuesday, 30 September 2014
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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)?
a.
b.
c.
d.
2. Which of the following is typical
deterioration that can take place on the external surfaces of pipes?
a.
b.
c.
d.
3.
a.
b.
c.
d.
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
a.
b.
c.
d.
5. Piping classifications (class 1, 2, 3)
in API 570 will respectively mean,
a.
b.
c.
d.
6.
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:
a.
b.
c.
d.
7. For thickness
measurement of pipes NPS1 and smaller. NDT technique employed would be:
a.
b.
c.
d.
8. Identify
one of the following alternatives that is suggested by API 570 to determine the Maximum allowable Working
Pressure for an unknown material
a.
b.
c.
d.
9. Post
weld heat treatment is carried out
a.
b.
c.
d.
10. The
external surfaces of vessels should be examined not only for corrosion but also
for…
a.
b.
c.
d.
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
a.
b.
c.
d.
13. Freeze
damage can occur in case of which of the following fluids:
a.
b.
c.
d.
14. Thickness
monitoring during periodic measurements is taken at:
a.
b.
c.
d.
15. For
calculating MAWP of Piping Circuit which is put in service the wall thickness
used in computations is:
a.
b.
c.
d.
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:
a.
b.
c.
d.
17. Table
6-2 of API 570 standard gives extent of CUI inspection following the visual
inspection, which is applicable to:
a.
b.
c.
d.
18. As
per API 570 for bolted flanged joints, bolts and nuts are considered as
acceptably engaged if the lack of complete engagement is:
a.
b.
c.
d.
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
a.
b.
c.
d. Any diameter possible
21. For a typical “injection
point pipe circuit” starts upstream of injection point from a distance of
a.
b.
c.
d.
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
a.
b.
c.
d.
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 :
a.
b.
c.
d.
57. Prior
to examinations, each adjacent surface shall be cleaned within at least
_____" of the area to be PT examined.
a.
b.
c.
d.
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.
a.
b.
c.
d.
60. Which NDE methods are considered
"surface" methods?
a.
b.
c.
d.
61. Remaining life of pipe circuit is determined
by:
a.
b.
c.
d.
62. What
width of indication is required to demonstrate that a visual examination
procedure is adequate per ASME V?
a.
b.
c.
d.
63. ASME B 16.5 does not cover:
a.
b.
c.
d.
64. When
using radiographs to qualify welder, the acceptance standards used are found in
A.
B.
C.
D.
69. What
is the number of guided bend tests required for Performance Qualification in a
6G position?
A.
B.
C.
D.
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?
A.
B.
C.
D.
71. As
soon as possible after completing an inspection, the Inspector should:
a.
b.
c.
d.
72. What
is the minimum time that a leak test must be maintained (all joints and
connections shall be examined for leaks)?
a.
b.
c.
d.
73. What
type of problem would you expect in piping containing Amine?
a.
b.
c.
d.
74. A pressure test for piping, in most cases is
a:
a.
b.
c.
d.
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:
a.
b.
c.
d.
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?
A.
B.
C.
D.
91. When
checking austentic materials for cracks using PT methods only liquid
penetrants:
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