Final Examination #1

API 570

# OPEN BOOK QUESTIONS ( 1 ~ 50 )

1. A weld will be radiographed using a source-side wire IQI. The weld is 3/8” thick with 1/16”
reinforcement on both sides. What ASTM IQI set will be required?

A. Set A
B. Set B
C. Set C
D. Set D

2. A pipe is NPS 16, and is made from A 335 Grade P1 material. The design pressure is 1200 psig, and
the temperature is 750°F. What is the minimum thickness of this pipe, if a 1/16” corrosion allowance will
be maintained?

A. .734”
B. .675”
C. .480”
D. .970”

3. From the information in #2 above, what will the required PWHT be (if any), if this piping will be girth
welded in place, and the actual thickness used will be 1/16” over the required thickness (including the
corrosion allowance)?

A. 1100 - 1325°F
B. 1100 - 1200°F
C. 200° preheat in lieu of PWHT is allowable per API 570
D. No PWHT is required on this thickness

4. If a WPS is qualified using a base material that is 9” thick, the correct base metal thickness range
shown in the WPS should be:

A. 3/16” - 12” thick

B. 1/16” - 14” thick
C. 3/16” - 18” thick
D. 3/16” - 9.9” thick

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5. A valve will be replaced in a line that has seen significant external corrosion. The new valve is heavier
than the old valve, and will be placed in a location 10’ away from the nearest supports. What would a
primary concern be to you, the Inspector, regarding this situation?

A. Incorrect material on the valve flanges

B. Moving the supports in to properly support the valve
C. Reordering a valve with lesser body thickness and less weight
D. Recommending an evaluation of the structural bending moment at the corroded area for
the amount of weight installed

6. An NPS 1/2 Category M pipe will be replaced. Baseline UT thickness readings to API 570 were
waived by the owner/user. The most likely reason for this is:

A. Category M does not require baseline readings

B. It was probably secondary Class B piping - no UT’s required
C. NPS 1/2 pipe is beyond the scope of API 570
D. There is no such thing as NPS 1/2 Category M piping

7. The total linear thermal expansion of a 30’ long, A426 Grade CP5 pipe operating between 70° and
350°F is:

A. .63”
B. 2.10”
C. 3.4’
D. 47”

8. An A-135 Gr. B Category D service pipe is to be replaced. The pipe is NPS 8, and will be .875” thick.
The pressure on the system is 120 psi @ 300°F, and the minimum temperature is -20°F. T his piping:

A. Must be impact tested

B. Is exempt from impact testing
C. Must be RT’d to NFS
D. Must be received with MTR’s

9. Re-ratings must be acceptable to the:

A. owner/user
B. Engineer or Inspector
C. Only the Engineer
D. Both A & B above

10. The primary difference between pipe and tube is the:

A. Sizes
B. Materials
C. Welding
D. Hydro requirements

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11. During impact testing of an A182 F321 base metal, a 3/4 size bar was used instead of a full size bar.
The design temperature is 30° below the allowable minimum temperature listed in B31.3. At what
temperature must the impact test be performed?

A. -325°F
B. -355°F
C. -360°F
D. -430°F

12. A Class 600 flange, NPS 14, has a bolt hole diameter of ______________.

A. 1.50”
B. 20.75”
C. 1.375”
D. Not given in any available literature

13. When conducting ultrasonic shear wave examination of metal pipe and tubing to a DAC, it is
required that:

A. The examination be conducted using a 45° transducer

B. Calibration reflectors shall be axial notches or grooves on both sides of the cal block
C. Only longitudinal waves be used
D. Couplant should only be “Vaseline” or equivalent

14. Two types of impact testing are permitted in ASME IX. One of these is:

A. Charpy V-notch
B. Etch-notch
C. Drop weight
D. Either A or C, above

15. A NPS 16 pipe has externally corroded 1/8” uniformly around the circumference. The pipe was originally
1.031” thick, and the material is SA-106 B, seamless with a temperature of 650°F. The current operating
pressure is 875 psi. Per API 570 rules, can this piping continue to run at this pressure without inspection
for 10 years, assuming a continued external corrosion rate of .031” per year?

A. Yes, can continue to operate for 10 years at this pressure

B. No, cannot continue to operate at this pressure
C. Not enough information given to calculate the problem
D. Only if Tim personally sprinkles “holy” water on it.

16. The gasket contact surface from a 600# flange (NPS 8) has a radial “ding” in the 125 RMS face surface
that is not deeper than the bottom of the serrations but is greater than 1/2 the depth of the serrations.
The length of the “ding” is 3/8”. This imperfection should be judged _________.

A. Acceptable
B. Rejectable
C. Not enough information given
D. Flange “dings” are not a concern to a piping inspector

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17. The allowable unsharpness for a material that is 2” thick is:

A. .030
B. .020
C. .040
D. Unsharpness is not allowed in any ASME Code

18. A locally thin area is 1/2” away from a girth weld on an NPS 18 pipe. The thin area is found to be .725”
thick, and the original base metal is 1.23” thick. The pipe is A 369 Gr. FP9, and the temperature is
600°F. If the girth weld has not been radiographed, what is the current design pressure (or MAWP)
of this piping using the formula provided in API 570. (Not considering future corrosion or
inspections.)

A. 812 psi
B. 947 psi
C. 1150 psi
D. 1350 psi

19. A 12 NPS pipe is repaired by butt welding a replacement piece into the line using machine
GMAW. The welding operator is qualified by radiography on the first butt weld. What criteria
should be used to determine the acceptability of this radiograph?

A. ASME IX
B. ASME V
C. ASME B31.3
D. API 570

20. A hole-type IQI is observed on a RT film for an aluminum weld. The IQI body is placed across the weld,
but the lead letter “F” and the I.D. markers are not in the area of interest. Per ASME V, this condition is:

A. Acceptable as shown
B. Unacceptable - wrong placement for aluminum welds
C. Unacceptable - hole IQI’s cannot be used on this material
D. Unacceptable – hole type IQI’s cannot be used across the weld when a film-side set-up is used.

21. A globe valve will normally:

A. Allow flow in only one direction

B. Allow flow in three directions
C. Be installed with the flow coming from above the disc
D. Be installed with the flow coming from below the disc

22. A B564 GR NO 6600 Class 2500 flange is installed in a piping system that will be hydrotested at 9500
psi. This condition will be:

A. Acceptable
B. Unacceptable - exceeds flange hydro-rating
C. Acceptable, provided the test medium is water, and not air
D. Unacceptable if the system will operate above 10,000 psi

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23. A piping system will be hydrotested after a re-rating. The new design is for 600 psi @ 800°F, and
material is A376 TP 304H. The test will be run with condensate at 400°F. What is the required test
pressure on this system?

A. 900 psi
B. 1184 psi
C. 1107 psi
D. 1200 psi

24. If a carbon steel piping system is A-106B and is .125” thick with a minimum design temperature of -
55°F, the piping must be:

A. Normalized
B. Annealed
C. Impact tested
D. Radiographed

25. One of the items that must be marked on every B16.5 flange is:

A. Material heat number

B. Mill marking
C. Size
D. Temperature marking

26. Piping stress analysis can be employed to:

A. Take the place of inspections

B. Solve any questionable conditions discovered by inspection
C. Allow the owner/user to waive thickness inspections
D. Help solve piping vibration and flexibility problems

27. The difference between a “cross” and a “tee” is:

A. 3 inlets/outlets instead of 4
B. 2 inlets and 2 outlets instead of 6
C. Flow is allowed to go only one way in a cross
D. A “cross” can be used as a reducer - a “tee” cannot

28. During a pneumatic leak test of a 160 psi design pressure system, the pressure shall be gradually
increased until ________ psi is reached, and then a preliminary check of the system shall be made:

A. 25
B. 88
C. 176
D. 80

29. The maximum miter bend angle permitted in severe cyclic conditions is:

A. > 22.5 degrees

B. > 30.5 degrees
C. < 25 degrees
D. < 22.5 degrees

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30. A 600# flanged fitting is NPS 6 (6.625” O.D.) and is made from A-48 Grade 55 gray cast iron. The fitting
is installed in a system operating at 200 psig @ 300°F. The fitting is seamless, and is currently in use in
an underground piping system. What is the minimum thickness of this fitting?

A. .250
B. .120
C. .350
D. .180

31. Clamped joints cannot be used:

A. On Category D piping systems

B. Without adequate axial restraints on the piping
C. To stop leaks
D. On underground piping

32. SCC of Austenitic stainless steels is classified as ___________ per API 570, when it does not occur
under insulation.

A. Environmental cracking
B. Creep
C. CUI
D. Erosion

33. A welding procedure is qualified on P5A to P5A steel. This WPS is then qualified to weld on:

A. P5A - P4 steels
B. P5A - P5B steels
C. P4 - P4 steels
D. All of the above

34. A hot spot on a run of piping can best be detected by:

A. Contact pyrometers
B. Infrared thermography
C. Temper sticks
D. Feeling with your hand

35. A pipe is thickness checked in 1997 and found to be .380” thick. The pipe was previously checked in
1991 and was found to be .466” thick. The pipe is 16 NPS and is made from API 5L Grade X-42 ERW
pipe. Assuming the same corrosion rate continues, can the piping MAWP rating of 150 psi @
400°F be continued if the next inspection is set for 10 years?

A. Yes. MAWP is acceptable

B. No. MAWP must be reduced
C. Not enough information given
D. MAWP should be increased to 250 psig

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36. When inaccessibility prevents placing of RT location markers on the source or film side, a
___________ shall accompany the radiographs to show full coverage has been obtained.

A. Narrative report
B. Inspector’s certification
C. Dimensioned map
D. Photograph

37. A girth weld is UT inspected to Normal Fluid Service and is found to have an indication that is
characterized as a slag inclusion. The inclusion is 3/8” long and the piping is 1/2” thick. The width is
3/8”. This indication is characterized as a ______________ per B31.3.

A. Imperfection - acceptable
B. Discontinuity - acceptable
C. Defect - unacceptable
D. Indication - acceptable

38. When will the next UT thickness inspection be required on a Class 2 piping system with the following
information:

• NPS 3.5, standard wall pipe

• Design pressure 775 psi @ 500°F
• A53 Grade A, ERW with supplemental 100% RT performed on the longitudinal weld
• Initial UT inspection - installed new in 1974 and was .226” thick
• Last UT inspections done - 1990 - .175” thick

A. 1995
B. 1998
C. 2000
D. 2013

39. An NPS 4 branch connection is made from A-106 Gr B, and is installed in an NPS 16 header that is
A671-CC70. The installation is similar to Fig. 328.5.4D, Sketch 4. The branch is .281” thick. The header
is .535” thick, and the repad is .200” thick. The fillet weld leg is .500”.
This connection _____________________ per B31.3.

A. Will require post weld heat treatment.

B. Will not require post weld heat treatment.
C. Will require full RT.
D. Is not allowed in “lethal” service.

40. When conducting a bubble leak test, the temperature at the surface of the part should be within
_____°F to _____°F.

A. 60 - 125
B. 40 - 125
C. 30 - 100
D Above 70°F

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# QUESTIONS ( 41 ~ 50 ) are based on WPS/PQR GMAW-2, attached:
41. The upper base metal thickness allowed on the WPS:

A. Is acceptable as shown
B. Should be .495”
C. Should be .900”
D. Should be .450”

42. The preheat temperature range shown on the WPS is:

A. Acceptable to B31.3
B. Should be 100°F min
C. Should be 160°F min
D. Not to B31.3 requirements - must be at least 175°F

43. The gas backing range shown on the WPS, as qualified on the PQR is:

A. Acceptable as shown
B. Unacceptable - should not be shown on the WPS
C. Unacceptable - should not be shown on the PQR
D. Unacceptable - material shown does not require a backing gas

44. The bend tests shown on the PQR should be:

A. Rejected due to the 1/4” corner crack

B. Rejected due to the 1/8” crack
C. Changed to side bends
D. Accepted

45. The tension tests results shown on the PQR:

A. Are acceptable
B. Are rejectable - T-1 fails
C. Are rejectable - T-2 fails
D. Are rejectable - not enough specimens were taken

46. The impact test results shown on the PQR for the weld:

A. Are acceptable as shown

B. Are unacceptable per ASME IX
C. Are unacceptable per ASME B31.3
D. Should be changed to drop-weight tests

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47. If this procedure will be used for pipe inservice at -30°F design temperature, the impact tests
shown on the PQR for the HAZ are:

A. Unacceptable due to insufficient absorbed energy

B. Unacceptable due to insufficient temperature for size of specimen
C. Unacceptable due to wrong type of test
D. Both A & B above

48. The shielding gas shown on the WPS:

A. Is proper for the gas qualified

B. Is unacceptable due to flow rate
C. Is unacceptable due to change in gas composition
D. Both B & C above

49. The PQR is unacceptable because:

A. It was done after the WPS was written

B. It is not certified
C. It was done without PWHT
D. It cannot be traced to the WPS

50. The DWM range shown on the WPS is:

A. Acceptable as shown
B. Should be restricted to .495”
C. Should be restricted to .550”
D. Should be 1/8” only, as shown on the PQR for filler metal size

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# CLOSED BOOK QUESTIONS ( 51 ~ 150 )
51. The radiographic density through an IQI is measured at 2.6 with a densitometer using gamma RT. The
allowable density through the weld will be _______, if no shim is used.

A. 2.0 - 4.0
B. 1.8 - 4.0
C. 2.21 - 3.38
D. 2.0 - 2.99

52. A pipe support that is adjustable and is spring loaded is a _______________.

A. Hydraulic snubber
B. Shoe
C. “Can” spring hanger
D. Sway brace

53. RBI utilizes two assessments of failures. These are:

A. Consequence and probability

B. Likelihood and outcome
C. Consequence and likelihood
D. Truth or consequences

54. A Class 3 pipe is UT thickness checked in 1990 and found to be .385” thick. The pipe is then checked
in 1994 and found to be .300” thick. Original thickness was .432” in 1981. If the required thickness is
.182”, how many years can pass before the next thickness inspection?

A. 5.6
B. 5
C. 10
D. 2.8

55. Mill Test Reports _____________ considered a substitute for PMI Testing.

A. can be
B. & X-Rays are
C. should not be
D. are

56. A hole type IQI may be placed:

A. Only on the weld

B. Only beside the weld
C. Either on or beside the weld
D. Wire type IQIs must always be used

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57. Austenitic stainless steel piping (for example A312 Type 304) is NPS 6 (.432” nominal wall
thickness). This piping will have a minimum wall thickness (new and cold) of:

A. .432”
B. .378”
C. .300”
D. SS piping is not supplied in “NPS”. It only comes in “min. wall”

58. Which of the following is an essential variable for the GMAW process?

A. Wire diameter
B. Travel speed
C. Interpass temperature
D. Electrical characteristics (short arc to spray or vice-versa)

59. A P-1 (carbon steel) piping system has originally been PWHT’d because of H2S Service. A flush patch
repair weld is required to one section of the pipe due to corrosion. This repair weld:

A. Must be PWHT’d
B. May be preheated to 300°F per API 570, and no PWHT applied
C. May be “Temper-bead” repaired per API 570
D. Can be stress relieved by peening and interpass heat control

60. A 4T hole on a 40 IQI has an area of:

A. .0400
B. .160
C. .020
D. .40

61. The scope of API 570 does not include:

A. Pressure vessels
B. HF Alky piping
C. Bulk transfer lines at a dock
D. Both A & C above

62. Per ASME V, personnel performing PT examinations must be qualified to:

A. SNT-TC-1A
B. CP-189
C. An in-house manufacturer’s program
D. No specific personnel qualifications are mandated by ASME V – per referencing code

63. Inspection of Category D piping is:

A. Not required per B31.3

B. Optional per B31.3
C. Mandatory per B31.3
D. Left up to the discretion of the Erector

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64. A “TML” is utilized to provide thickness information on piping systems. This information must then
be used to establish:

A. Corrosion rates
B. Inspection Intervals
C. Metal loss
D. All of the above

65. An API 570 Inspector with a high school education must have _____ years experience to qualify as an
API 570 Inspector.

A. 3
B. 5
C. 8
D. 10

66. An API 570 Inspector with a high school education must have _________ years experience to
qualify as an ASME 31.3 Inspector

A. 3
B. 5
C. 8
D. 10

67. The scope of API 570 does not include:

A. Hydrogen service
B. Catalyst lines
C. Sour water piping NPS 3/8”
D. Raw chemicals

68. Per API 570, CUI inspections on Class 2 systems _________ include _______ % of suspect areas
and _______% of damaged insulation areas for plants with no CUI experience or history.

A. Should, 50%, 10%

B. Shall, 33%, 50%
C. Should, 50%, 33%
D. Should, 25%, 10%

69. A welder cannot be qualified by radiography when using:

A. P4X metals
B. P5A metals
C. P3X metals with GMAW-Spray Arc
D. P-1 metals with GMAW short-circuiting arc

70. Dry MT shall not be performed above what temperature?

A. 60 - 125°F
B. 135°F
C. Manufacturer’s recommendation
D. 600°F

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71. Class 3 secondary SBP shall be UT inspected at which maximum intervals?

A. 10 years
B. 5 years
C. 3 years
D. None of the above

72. An example of a place to check for erosion includes:

A. Downstream of control valves

B. Downstream of orifices
C. Downstream of pump discharges
D. All of the above

73. Fatigue cracking will normally be prevalent at:

A. Areas of high stress reversals

B. Insulated stainless steel areas
C. Pipe supports on “sleeper” racks
D. Junctions of flow restrictions

74. Underground piping may alternatively be pressure tested instead of inspected. If used, this pressure
test must be conducted at ___________ intervals on piping not cathodically protected in soil that has a
resistivity of 2,000 - 10,000 OHM/CM.

A. 5 year
B. 10 year
C. 15 year
D. 20 year

75. One of the procedural requirements for MT examination that must be addressed is:

A. Magnetizing time
B. Developer application
C. Type of particles, wet or dry
D. A and B above

76. The primary difference between a repair and an alteration is:

A. Material considerations
B. Welding considerations
C. Design considerations
D. Inspector opinion

77. An internal inspection of piping is:

A. Required for large bore piping

B. Not required for underground large bore piping
C. Is normally not done unless the piping is opened
D. Must always be done for H2S service

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78. Cathodic protection systems shall be monitored at intervals in accordance with:

A. NACE RP 0169
B. API RP 651
C. Both A & B above
D. None of the above

79. Records of PMI Testing for new & existing piping systems should be kept?

A. As long as the piping system remains in the original location.

B. Until next PMI survey.
C. Owner/User discretion
D. None of the above.

80. Per B31.3, personnel performing VT examinations shall be qualified to _______________.

A. SNT-TC-1A
B. AWS CWI
C. Manufacturer’s/contractor’s program
D. ACCP

81. Class 3 piping should be visually inspected at a maximum interval of _________ years.

A. 5
B. 10
C. 15
D. 1/2 RCL or 10 years

82. Supplementary Essential Variables (if applicable) must be addressed on the:

A. WPS only
B. PQR only
C. WPQ only
D. WPS and PQR only

83. After major repairs are completed on a piping system a pressure test shall be performed if:

A. The repair is an alteration

B. The API 570 Inspector deems a test practical and necessary
C. The Engineer deems one necessary
D. The repair firm conducts a pressure test in lieu of NDE

84. If RBI is used to plan the frequency of detailed inspections on a Class 1 system, the RBI assessment
must be done at least every ____________.

A. 3 years
B. 10 years
C. 5 years
D. year

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85. A piping system is Class 3 and is 1/2” thick carbon steel. The decision is made to replace a
corroded section of the piping by welding in an insert (flush) butt-welded patch. This patch will:

A. Require full RT on the weld

B. Require full UT on the weld
C. Not require RT or UT on the weld
D. Either A or B above

86. The required mill undertolerance on pipe is normally -12.5%, but some piping is made from plate which
has an undertolerance of ______________.

A. 12.5%
B. +16”, -0”
C. - .01”
D. + 9%

87. If environmental cracking is suspected on attached piping during internal inspection of pressure
vessels, the Inspector should:

A. Designate pipe spools upstream and down for inspection

B. Not assume automatically that the piping is also cracked
C. Require all piping in the unit to be inspected
D. Replace all cracked piping nozzles in the vessel

88. A visual examination procedure must be qualified to prove the procedure is adequate. An artificial flaw
may be used for this demonstration that is __________.

A. 1/8” or less in width

B. 1/32” or less in length
C. 0.8 mm or less in width
D. .8 mm or less in length

89. Which of the following is not a tool for measuring corrosion of piping:

A. Acoustic emission transducers

B. Ultrasonic instruments
C. Radiography profile
D. Corrosion coupons

90. If the WPS shows a single “Vee” groove is to be used and the PQR was qualified with a double “Vee”
groove:

A. The WPS can be used without re-qualification

B. The WPS must be requalified
C. The PQR must be retested
D. The WPS must be modified to show the correct joint

91. Welded repair of cracks occurring in-service should not be attempted without consulting the:

A. API Inspector
B. Contractor
C. Piping Engineer
D. Maintenance Foreman

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92. If carbon steel piping is to be welded and the temperature is less than 32°F, the piping must be
preheated to a minimum temperature of ___________ °F per B31.3

A. 100°F
B. 75°F
C. 150°F
D. 50°F

93. Many problems found during in-service inspection of piping systems can be directly attributable to:

A. Hydrostatic testing
B. Lack of proper new-construction inspection
C. Cold winters
D. Lack of internal inspections

94. Of the types of stresses that are placed on a thin walled cylinder, the most severe is:

A. Longitudinal
B. Circumferential
C. Compressive
D. Radial

95. The ultimate load on a .510” diameter tensile specimen is 15,000 lbs. The ultimate strength of this
specimen is approximately:

A. 73,529 psi
B. 90,200 psi
C. 85,100 psi
D. 18,359 psi

96. At what temperatures does SE-797 provide guidelines for measuring the thickness of materials using
the contact pulse-echo method?

A. Not to exceed 93° F

B. Not to exceed 200° C
C. Not to exceed 200° F
D. Not to exceed 1000°

97. A common root pass welding defect is:

A. Porosity
B. Lack of penetration
C. Tungsten inclusion
D. Overlap

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98. If a probable corrosion rate cannot be determined from the same or similar service, estimated data, or
other methods, an initial thickness measurement shall be conducted after no more than _______ of
service using NDE thickness measurements.

A. 1000 hours
B. 3 months
C. 2 years
D. 5 years

99. A pressure test of a final closure weld is not required when a slip-on flange construction in service
piping is used, provided the new piping is pressure tested, a miter joint is not used, and ____________.

A. PT/RT is performed on the welds

B. UT/VT is performed on the welds
C. ET/UT is performed on the welds
D. MT/PT is performed on the welds

100. A welding electrode is marked E8018. The first two digits mean that the electrode has:

A. 80 KSI weld strength

B. 80 PSI stress
C. 80,000 KSI tensile strength
D. 80,000 psi tensile strength

101. A standard hydrostatic test is to be run after an alteration on a piping system. The piping has a stress
value of 20 ksi at the test temperature and 17 ksi at design temperature. The design pressure is 720
psi. What is the calculated test pressure?

A. 1080 psi
B. 918 psi
C. 1270 psi
D. 792 psi

102. Before breaking a flanged connection to conduct an inspection, necessary precautions should
include:

A. Purging of the system before disconnection

B. Proper PPE or blinding
C. Gas freeing of all connections to the system
D. All of the above

103. After radiography of a piping girth weld, a dark image of a “B” is noticed on the radiograph. This is
probably caused by:

A. Backscatter
B. A welders I.D. stamp indented in the metal
C. A lead reference mark
D. An artifact of the film

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104. A piping “scab” patch will be applied to correct a leak in an NPS 14 pipe. The pipe material is rated for
41 KSI SMYS. This “scab” patch is ____________.

A. Allowed per API 570

B. Disallowed per API 570
C. Radiographed per API 570
D. Approved by the Piping Engineer, only

105. Per ASME IX, a longitudinal bend test is only allowed when:

A. The base and filler metal is the same

B. The base and filler metal is non-ferrous
C. The base and filler metals are of different bending compositions
D. The weld is a fillet weld

106. The scope of API 570 begins where a vessel terminates, specifically:

A. At the face of first flange

B. At the vessel-to-nozzle connection
C. At the pipe hanger
D. At the weld attaching a LWN nozzle to the vessel

107. Creep is affected by:

A. Time, temperature, stress

B. Time, stress, materials
C. Time, upsets, coatings
D. Temperature, stress, service

108. The two primary NDE methods referenced by API 570 for thickness examinations are:
A. RT, AET
B. ET, UT
C. MT, UT
D. UT, RT

109. The primary difference between GMAW and FCAW is:

A. The wire feeder used

B. The gas used
C. The wire used
D. The power source used

110. A leak test of a buried piping system should be maintained for a minimum of _______ hours. After
________ hours the system pressure should be noted, and the system should be re-pressurized if
required.

A. 4, 4
B. 8, 8
C.` 8, 4
D. 4, 8

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111. An API Piping Inspector’s duties may include:

A. Authorize repairs and alterations

B. Performing flexibility calculations
C. Perform RT
D. Install nameplates

112 A pipe is UT inspected in 1978 and found to be .370” thick. The pipe is next inspected in 1982 and
found to be .300” thick. The pipe is next inspected in 1990 and found to be .200” thick. The pipe is then
inspected in 1997 and found to be .180” thick. If the piping required thickness is .135”, when should
the next UT thickness inspection be conducted?

A. 4.5
B. 2.25
C. 5
D. 10

113. A ferritic stainless steel piping system will be hydrotested. The water used for this test must be:

A. Low in chlorine
B. Low in fluorine
C. Low in sulphur
D. None of the above

114. Per ASME IX a welding operator may be qualified by:

A. Test plates (bend tests)

B. Production weld radiograph
C. Radiography of a test pipe
D. Any of the above

115. An ASME magnetic particle field indicator is made up of how many “PIE” sections furnace
brazed together?

A. 2
B. 8
C. 6
D. 4

116. Per ASME V Article 9, personnel performing VT shall:

A. Be qualified to SNT-TC-1A
B. Have 10 years experience
C. Have an annual vision test to J-1 standards
D. Have an annual vision test to J-2 standards

117. RP 578 applies to ________________ process piping systems covered by ASME B31.3 & API 570.

A. new
B. existing
C. covered
D. both A & B, above

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118. CUI must be investigated for piping systems operating between _________ which may have had
moisture ingress.

A. 20 - 250°F
B. 250 - 600°F
C. -4 to 120°C
D. 65 to 204°C

119. Remaining Life is calculated using the formula:

A. RL = CA/ pressure
B. RL = t actual – t required/ corrosion rate
C. RL - t minimum/ corrosion allowance
D. RL = t actual - t min/ temperature

120. Which of the following should not be considered an alteration per API 570.

A. Replacement of a 6” nozzle with a 6” nozzle (both reinforced)

B. Replacement of an un-reinforced 6” nozzle with a 12” reinforced nozzle
C. Replacement of a 12” reinforced nozzle with an 18” reinforced nozzle
D. All of the above should be considered alterations

121. The allowable internal misalignment on a circumferential butt weld is ______ per ASME B31.3
requirements.

A. 1/16”
B. 1/8”
C. Per the Inspector’s judgment
D. Per the WPS allowances

122. A quench cracked aluminum block is used in:

A. PT examinations
B. RT examinations
C. MT examinations
D. AE examinations

123. A 1/4” leg fillet weld will have a throat dimension of:

A. .250”
B. .176”
C. .190”
D. .35”

124. Per API 570, the absolute minimum number of TML’s that any given piping circuit must be
assigned is _____________.

A. One
B. Two
C. 12
D. As required by the API 570 Inspector

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125. The pressure classes given in ASME B16.5 include which of the following:

A. 100
B. 700
C. 900
D. 1200

126. If seal welds are employed on a threaded joint, the Code requires that:

A. Seal welds be at least .250” leg

B. The seal welds must cover all threads
C. The seal welds can only be used in Cat. D and NFS
D. Both B & C, above

127. The difference between a concentric and eccentric reducer is:

A. Size
B. Diameter at the reduced end
C. Diameter at the large end
D. The geometry of the reduction

128. If welding procedures are to be “shared” between companies as allowed by ASME B31.3, a
number of conditions must be met. One of these conditions is:

A. P # limited to 1, 3, 4, 5, 6, 7, or 8
B. Material to be welded is not more than 3/4” thick
C. Lethal service is not permitted
D. The employer has at least two welders qualified with the new procedure.

129. A Class 1 piping system has been thickness checked in 1972, and was found to be .760” thick. The
required thickness is .428” (by calculation), and the piping was re-checked visually and for thickness in
1984 and 1995. The 1984 inspection showed .688” and the 1995 inspection shows .540”. Per API 570,
when should the next UT and visual inspection be conducted?

A. 2.3 years UT, 5 years visual

B. 4.3 years UT, 5 years visual
C. 2.3 years UT, 10 years visual
D. 5 years UT, 5 years visual

130. When weld hardness tests are required by ASME B31.3, at least __________% of the welds must be
tested when local PWHT is employed.

A. 5%
B. 10%
C. 25%
D. 100%

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131. ___________ or ____________ may be used with UT instruments when checking pipe with
operating temperatures above 200°F.

A. Delay line transducers, pulse echo equipment

B. Water cooled transducers, delay line transducers
C. Special air cooled equipment, water “bubble” transducers
D. Lucite shoes, delay line “sweep” a scan machines

132. The IQI image must be visible on _______ sides when using a shim, per ASME V.

A. 1
B. 2
C. 3
D. 4

133. A flared tubing joint has (essentially) 4 critical components, one of these components, by name could be
the:
A. Body
B. Nut
C. Sleeve
D. Both A & B above

134. Socket weld and threaded flanges are not recommended for service above ______°F or below _____
°F, per B16.5.

A. 500, -50
B. 300, -20
C. 200, -10
D. 100, -5

135. Which of the following welding documents must be certified by the test laboratory, per ASME IX?

A. WPS
B. PQR
C. PQR and WPQ
D. None of the above

136. Some common internal corrodents found in a refinery are:

A. Sulfur and chlorine compounds

B. Caustics and organic salts
C. Water deposits and marine growth
D. Atmospheric contaminants and rain

137. The difference between an “examination” and an “inspection” per B31.3 is:

A. One is QC, the other is NDE

B. One is QA, the other is hydrotesting
C. One is QC- done by the examiner, one is QA-done by the Inspector
D. One is required, the other is optional

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138. Shims may be placed under a hole IQI to simulate weld reinforcement to assure the density in the area
of interest is not more than ______ lighter than the density through the IQI.

A. -30%
B. +30%
C. -15%
D. +15%

139. The intensity of the black light at the surface shall not be less than ___________ when conducting a
fluorescent PT examination.

A. 100 μW/cm 2
B. 1000 μW/cm 2
C. 800 μW/cm 2
D. 400 μW/cm 2

140. By definition, a piping circuit is a section of piping that has all points exposed to an environment of
similar corrosivity and of similar ________ and _________.

A. Design conditions and operations

B. Design conditions and construction materials
C. Materials and flow characteristics
D. Operating parameters and piping specifications

141. When selecting TML’s for threaded connections, only those that can be _________ should be
selected.

A. UT’d
B. VT’d
C. RT’d
D. PT’d

142. A welder qualifies on a 3 NPS pipe in a 6G position. The piping is titanium, and the weld is made with
SMAW. How many bend tests are required for this test weld?

A. 2
B. 4
C. At least 3
D. RT is required for this weld in lieu of bend tests

143. How many individual examinations must be conducted on each area of interest when conducting MT
examination, per ASME V?

A. 1
B. 2
C. 3
D. 4

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144. The recommended upstream limit of an injection point on an NPS 10 pipe in a Class 1 system is?

A. 12”
B. 20”
C. 18”
D. 30”

145. Rerating by changing temperature or pressure of a system can be done only if which of the
following is met?

A. Accepted by the Engineer

B. Leak test is performed
C. All piping components are checked for the new service conditions
D. All of the above

146. An example of an essential variable using the SMAW process for procedure qualification is:

A. Change in PWHT
B. Change in backing
C. Change in pipe diameter
D. Change in amps/volts

147. If pipe leaks are clamped and re-buried, the location of the clamp ______ be logged in the
inspection record and ______ be surface marked.

A. Shall, shall
B. Shall, must
C. Shall, may
D. May, shall

148. TML’s can be reduced or eliminated on piping systems that _______.

A. Are guaranteed not to leak by the Engineer

B. Are non-corrosive, as demonstrated by history or similar service
C. Are classified as Category K piping systems
D. Have a higher complexity in terms of fittings, branches, etc.

149. Per ASME V, an examiner must be in a darkened room for at least _____ minutes prior to
performing a fluorescent PT examination.

A. 2
B. 1
C. 10
D. 15

150. Per ASME B16.5, bolt holes in flanges are all required to be placed in multiples of _______.

A. 2
B. 3
C. 6
D. 4

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 API 570 ANSWER SHEET

1. B, ASME V, Art 2, T-276 51. C, ASME V, T-282.2 101. C, B31.3, 345.4.2

2. A, B31.3 52. C, 574 102. D, 570, 5.2
3. A, B31.3, 331.1.3 53. C, 570, 5.1 103. B, ASME V, T-284
4. A, ASME IX, QW 403.7 54. D, 570, 7.1.1 104. B, 570, 8.1.3.1
5. D, 570, 7.5 55. C, RP 578, 7.2 105. C, ASME IX,QW-161.5
6. C, 570, 1.2.2 56. C, ASME V, T-277.1(c) 106. A, 570, Fig 300.1.1
7. A, B31.3, App C 57. B, 574,Table 3 107. A, 570, 5.3.10
8. B, B31.3 58. D, ASME IX, QW-255 108. D, 570, 5.5.2
9. D, 570, 4.1 59. A, 570, 8.22.1 109. C, ASME IX, QW 492
10. A, 574, 4.2 60. B, ASME V,Table T-233.1 110. C, 570, 9.2
11. B, B31.3, 323.3.4 61. A, 570, 1.2.2 111. A, 570, 8.1.1
12. A, B16.5, Table 17 62. D, ASME V, T-610 112. B, 570, 6.6
13. B, V, Art 5, T-534.1 63. C, B31.3,341.4.2 113. D, 570, 5.7
14. D, IX, QW-170 64. D, 570, 5.5 114. D, ASME IX, QW 301
15. B, B31.3 65. A, 570, A-1 115. B, ASME V,T-753.1.2
16. B, 16.5, Table 3 66. D, B31.3, 340.4 116. C, ASME V, T-942
17. A, ASME V, Art 2, T-285 67. C, 570, 1.2.2 117. D, RP 578, 1.1
18. D, B31.3/570 68. B, 570, T-6.2 118. C, 570, 5.3.3.1
19. C, ASME IX, QW191.2.3 69. D, ASME IX, QW-304 119. B, 570, 7.1.1
20. A, ASME V, Art. 2, T-277 70. C, ASME V, T-731 120. A, 570, 3.1
21. D, 574, Fig 2 71. D, 570, 6.6.1 121. D, B31.3, 328.4.3
22. B, B16.5, 2.5 72. D, 570, 5.3.6 122. A, ASME V, T-653.1
23. C, B31.3, 345.4.2 73. A, 570, 5.3.9 123. B, B31.3, Fig 328.5.2A
24. C, B31.3. Fig 323.2.2A + tables 74. A, 570, 9.2.7 124. D, 570, 5.5.3
25. C, B16.5, 4.16 75. C, ASME V, T-731 125. C, B16.5, 1.1
26. D, 570, 7.5 76. C, 570, 3.1 126. B, B31.3, 328.5.3
27. A, 574. Fig 10 77. C, 570, 5.4.1 127. D, 574, fig 10
28. A, B31.3, 345.5 78. D, 570, 9.1.5 128. B, B31.3
29. D, B31.3, 306.3.3 79. A, RP 578, 7.4 129. B, 570, Table G-1
30. D, 574/B31.3 80. C, ASME B31.3, 342 130. D, B31.3, 331.1.7
31. B, 574. 2.1.5.4 81. B, API 570, Table 6.1 131. B, 574, 10.1.2.1
32. A, 570, 5.3.7 82. D, ASME IX, QW-100 132. C, ASME V, T-277.3
33. A, ASME IX, QW 424 83. B, API 570, 8.2.6 133. D, 574, Fig 16
34. B, 570, 5.3.5/ 5.4.5 84. C, 570, 6.1 134. A, B16.5, 2.4.1
35. A, 570 85. C, 570, 8.1.32 135. D, ASME IX, QW-200.1
36. C, ASME V. T275.3 86. C, 574, 4.1.1 136. A, 574, 6.3.5
37. C, B31.3, 344.6.2 87. A, 570, 5.3.7 137. C, B31.3, 340.1
38. C, B31.3/570 88. C, ASME V 138. C, ASME V, T-277.3
39. B, B31.3, 331.1.3 89. A, 570, 5.6 139. B, ASME V, T676.4
40. B, V, Article 10, I-1071 90. A, ASME IX,QW-200.1(c) 140. B, 570, 3.31
41. B, ASME IX, QW-403.10 91. C, 570, 8.1.3.1 141. C, 570, 6.6.3
42. A, B31.3, 406.1 92. D, B31.3, T330.1 142. B, ASME IX, QW 452
43. A, ASME IX, 408.9 408.10 93. B, 574, 10.4.1 143. B, ASME V, T-771
44. D, ASME IX, QW 163 94. B, B31.3, 302.3.5 144. D, 570, 5.3.1
45. C, ASME IX, QW152 95. A, ASME IX, QW 152 145. D, 570, 8.1.1
46. C, B31.3, Table 323.3.5 96. C, ASME V 146. A, ASME IX, QW 253
47. D, B31.3, 323.3.4 – 323.3.5 97. B, B31.3 147. C, 570, 9.3.2
48. C, ASME IX, QW 408.2 98. B, 570, 7.1.2 148. B, 570, 5.5.5
49. B, ASME IX, QW 200.2 99. D, 570, 8.2.6(D) 149. B, ASME V, T-690.1(B)
50. B, ASME IX, QW404.30 100. D, ASME IX Gen Know 150. D, B16.5, 6.5

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